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<big><big><big>🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧🚧</big></big></big>
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<small>by [[User:Alessia|Alessia]]<br></small>
<small>[[User:Alessia/Pen_plotter_magic|🔙back to menu🔙]]</small>
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Personal essay evolved after a sudden presentation about pen plotting to some unsuspecting friends (> their random comments here included), inspired by zulip messages and insomnia<br>
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<big><big><big>✦ .  ⁺   . ✦ .  ⁺   . ✦</big></big></big>


== intro ==
<big><big><big><big><big><big><big>'''What'''</big></big></big></big></big></big> <big><big><big>'''even is'''</big></big></big> <big><big><big><big><big><big><big>'''a pen plotter?'''</big></big></big></big></big></big>
Pen plotters are iconic pioneers of digital graphic reproduction, magical devices that left an indelible mark on the history of design, visual art, computer graphics and engineering.<br>
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Wonderful tools, extremely satisfying to watch, amazingly hypnotic, they are vector printing devices. Nowadays sadly disused, replaced by large-format inkjet printers, or led toner based printers. <br>
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In today's art world, a fresh wave of artists is enthusiastically adopting pen plotters again to delve into the realms of algorithmic aesthetics, generative design, and the fusion of art and technology. Their exploration ranges from intricate line drawings to immersive installations, pushing the limits of the medium and erasing distinctions between the analog and digital realms, as well as between handmade and machine-generated art.<br>
<div style="text-align: center;">
> ''Can I say that it sounds funny as a name? plotter''<br>
> ''Oh wait I saw them on tiktok there are plenty of videos of these  m a c h i n e r i e s ''<br>
> ''Yes, kinda trending''<br>
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</div>


They are iconic devices, magical pioneers of digital graphic reproduction, machines that left an indelible mark in the history of visual art + computer graphics and in each of our hearts. Even if sadly pen plotters were replaced by large format inkjet printers, we are now experiencing a new renaissance for them, even outside the xpub bubble. With such nostalgic appeal they attract even more. Artists from all over the world acclaim them again as their new favourite tools, to be safeguarded, cherished, resurrected.


Modern digital plotters, which are still in use today, evolved from analog '''XY writer plotters''' that operated along two axes of motion. They were the most efficient way to draw '''vector graphics''', rather than raster images, making them ideal for tasks like drafting blueprints, graphing data, and producing large-format maps.
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<div style="text-align: right;">
> ''I don’t understand, weren't you doing things with the radio?''<br>
> ''pen plotters look even scarier than computers I swear''<br>
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</div>
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Modern digital plotters, which are still in use today, evolved from analog XY writer plotters, output devices designed as precision measuring instruments and output devices for analog computers. The XY writer was a plotter that operated along two axes of motion, making it the most efficient way to draw vector graphics.<br>
<div class="center" style="width:auto; margin-left:auto; margin-right:auto;"><big><big><big><big><big><big>'''Now'''</big></big></big></big></big> <big><big>'''some'''</big></big> <big><big><big><big><big><big>'''historical facts!'''</big></big></big></big></big> <big><big><big>🖼</big></big></big></div>
One of the earliest plotters was '''Konrad Zuse's Graphomat Z64''' in 1958, a punch card controlled plotter, driven by two gears. '''Frieder Nake''', THE Algorist (along with Vera Molnar, Georg Nees, A. Michael Noll, and Manfred Mohr) used this machine, for which he developed a software for his experimentations.
One of the first mechanical and commercial plotters was the '''CalComp 565''', from 1966, a drum plotter that worked by placing the paper over a roller that moved the paper back and forth along the X axis and the pen moved back and forth along the Y axis.
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Historically, plotters were made with practical applications in mind like drafting blueprints, graphing data, or drawing large format maps, offering the fastest way to produce very large drawings or colour high-resolution vector-based artwork when computer memory was too expensive and processor power was too limited.<br>
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Pen plotters were very time consuming and difficult to use, users often found themselves concerned about the ink in their pens running dry If one pen dried out at the end of a plot, the total plot had to be redone most of the time. In spite of these limitations, the extreme resolution and colour capability of pen plotters made them the favourite output device until the late 80’s. <br>
<div style="text-align: center;">
> ''luckily you are showing images I wouldn’t understand a thing without them''<br>
> ''damn diabolic m a c h i n e r i e s''<br>
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A number of printer control languages were created to operate this kind of machine, to transmit commands to move the pen itself. Three common ASCII based plotter control languages are HP-GL, the successor HP-GL/2 and DMPL.<br>
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== History + Models ==
The progress of plotter technology was a key part for the development of '''CAD''' (Computer Aided-Design, software used by designers and engineers to create detailed digital drawings and models of objects or structures). The Computervision's '''Interact I''' plotter, was designed to be a combination of a digitiser and a plotter, serving as an interactive terminal. Users could copy a sketch, see it on a screen, edit it, and then print out the changes.<br>
 
The great change for pen plotters arrived with the crafting of the '''flatbed plotter'''. As the name suggests, the surface to be drawn on was laid out flat, different from before, as paper was rolled up on a drum. '''HP''' was the big guy for commercial plotters. HP's first plotter was the '''9125A''' flatbed plotter, introduced in 1968.
 
Again HP, the HP 7470, born in the 80s, introduced the grit wheel mechanism: rollers pressing at opposite edges of the sheet to control movement. The pen is mounted on a carriage that moves back and forth in a line between the grit wheels.
One of the earliest plotter was Konrad Zuse's computer-controlled Graphomat Z64 in 1958, a punch tape or punch card controlled plotter, driven by two gears.<br>
Plotters were also used in '''Create-A-Card kiosks''', to make little postcards, that were available for a while in supermarkets. They used the '''HP 7475A''' six-pen plotter.
It was used for fully automatic plotting for geodesy, meteorology and road construction. A remarkable artist that used this particular machine for his works was Frieder Nake, who explored computer art in the 60.<br>
 
 
{|style="margin: 0 auto;"
|[[File:photo_to_add|thumb|upright=0.5|Graphomat Z64]]
|[[File:photo_to_add|thumb|upright=0.5|punch tape]]
|[[File:photo_to_add|thumb|upright=0.5|example of Pantograph]]
|[[File:photo_to_add|thumb|upright=0.5|homage to Paul Klee, Nake (1965)]]
|}
 


The most used modern pen plotters at the moment are the one from '''AXidraw''' by '''Evil Mad Scientist Labs''', their firmware is open source: <nowiki>https://github.com/evil-mad/axidraw</nowiki>.
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>        ''I’ll still use my hp printer''<br>
> ''I don’t understand how this is connected to the radio''<br>
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I am done, done, let's speak about art c’mooonn.<br>
<big><big><big><big><big>'''Firstly, pen plotter art:'''</big></big></big></big> <big><big><big><big><big><big>'''is it really art?'''</big></big></big></big></big></big></big>
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There isn’t much about plotter art in general, in books or on the internet. Grouping people together is always a way to ghettoise them, what does it even mean to be a pen plotter artist? Is there any kind of typical philosophy that is embedded to practising art through this kind of machine in particular? Each artist brings their unique perspective and creative approach to the intersection of art and technology. Art romantically is creativity, but in the real world art is money. We saw this in the fascinating rise of NTF that stained pen plotter art as well :)  
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One of the first mechanical and commercial plotter was the CalComp 565 from 1966, a drum plotter that worked by placing the paper over a roller that moved the paper back and forth for the X motion and the pen moved back and forth for the Y motion.<br>
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http://bitsavers.informatik.uni-stuttgart.de/pdf/calcomp/CalComp_Software_Reference_Manual_Oct76.pdf<br>
<div style="text-align: center;">
> ''NFTs are still a thing?'' <br>
</div>
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A key hardware piece for the development of CAD applications is the Computervision's Interact I, it used an attached ball point pen to draft pantographs (mechanical drawing aid based on parallelograms). It was really slow and required a lot of space, it was anyway useful as a digitizer (processing information to a digital format).<br>
I got to discover (from an Interview with Frieder Nake by ‍Mark Amerika) that THE algorists, even if they were programmers, still had people writing codes for them. This made me smile, remembering all those great personalities, those artists whose names are printed into history books, whose real artistic production is reduced to the bone, maybe even less. Who knows how many works of art have been created with the creator, to whom these works are attributed, moving their brilliant hand just to sign them, while studio cadets sweated over fresh canvases? Or in this case: over keyboards.
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Another type of plotter was the flatbed plotter. instead of wrapping the drawing surface around a drum, they laid it out flat.  This was a preferred type of plotter for cases where you needed to see the whole piece while it being plotted.<br>
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Tektronix produced flatbed smaller plotters between the 60s and 70s for “home-use”, they were popular for desktop business graphics and in engineering laboratories, their pens were mounted on a travelling bar.<br>
<div style="text-align: right;">
> ''uuh we are getting into the social critique part now. spicy.'' <br>
> ''like my internship you mean. I feel this.'' <br>
> ''Idk, maybe they were paid this time, not enslaved like renaissance boys'' <br>
</div>
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Hewlett Packard was the biggest manufacturer of pen plotters, their first plotter was the 9125A flatbed plotter, introduced in 1968. <br>
Their HP 7470, in the 80s, was the world's first small format paper moving plotter (the advantages are higher speed and lower costs) that coudl switch between 8 pens. The chosen pen was mounted on a carriage that moves back and forth in a line between the grit wheels.<br>


Other important mentions: ColorPro, DraftPro and the 7600 series (electrostatic plotters)<br>
I had prepared a very long list of names, all contemporary artists, as I wanted to find mainly artists that are still involved in the art scene, who have jumped from the bank of computer science to the bank of visual art, falling into exhibitions, museums, glossy newspapers superficial interviews. I don’t really want to show it anymore (hahaha no it's here actually [https://pzwiki.wdka.nl/mediadesign/User:Alessia/list_pen_plotter_artists list pen plotter artists] ). It is a very different world from our studio and perhaps from those who see pen plotters in a more sincere, curious, way of rediscovering forgotten tools. I also wonder how much my own gaze is directed at the art industry more than at the creative act itself, there would be too much to say. I will not tell you about this whole list, just some hints.
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Plotters were also used in the Create-A-Card kiosks that were available for a while in the greeting card area of supermarkets that used the HP 7475 six-pen plotter.<br>
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Another interesting application of the plotter magic was that of the electronic or microfilm plotters. They worked in a similar way as the mechanical plotter, but instead of a pen they used electron beams and instead of paper microfilm.<br>
<div style="text-align: center;">
The first known computer animation was created by the SC-4020 titled “Simulation of a Two-Gyro Gravity Gradient Attitude Control System” by E. E. Zajac, 1965.<br>
> ''but can the plotter do other stuff other than plotting?''<br>
https://www.youtube.com/watch?v=GBlQb6Me_1k&ab_channel=UltimateHistoryofCGI<br>
> ''maybe make food? Sing a song?''<br>
> ''what’s the point of making something do what it is expected to do?''<br>
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<big>'''Generative art!'''</big> Talking about pen plotter art without mentioning computer and generative art is impossible. Pen plotters undeniably played an important role in the evolution of both of these art movements, as they were among the earliest digital tools available to mathematicians, scientists, and programmers to push that immaterial boundary between art and science.


{|style="margin: 0 auto;"
'''Mafred Mohr, Vera Molnar Frieder Nake, George Ness, Herbert W. Franke''', are all great science-computer-artists that experimented with generative art and visualised their ideas through pen plotting. It’s interesting to see how pen plotting built a bridge between new digital computer technologies and traditional printmaking techniques. I am speaking about dirty hands, acids, and staining inks that were at some point being linked to the cold grey plastic reality of computer hardwares.
|[[File:photo_to_add|thumb|upright=0.5|Calcomp 565]]
A whole new world.<br>
|[[File:photo_to_add|thumb|upright=0.5|Stromberg Carlson SC-4020, 60s]]
|[[File:photo_to_add|thumb|upright=0.5|example of Pantograph]]
|[[File:photo_to_add|thumb|upright=0.5|grit wheel mechanism]]
|[[File:photo_to_add|thumb|upright=0.5|create a card Kiosk  from the 80s]]
|}


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Pen plotters, as computers, weren’t really naturalised, common to have around, Mohr had to use the ones from the Paris Institut Météorologique. I imagine what the guys there would have thought about this person using their machinery, for art???
Other remarkable pioneers of pen plotter art still included under the generative art umbrella are: '''Harold Cohen, Mark Wilson, Peter Beyls, Roman Verostko, Jean-Pierre Hébert, Casey Reas'''.


Plotter are still versatile tools due to their ability to produce large-scale prints across various media types, they are still used for POP adverts in supermarkets, data visualisation,  other niche application of plotters are braille embossers, used to create tactile images on special thermal cell paper, vinyl cutters (that still use HPGL language), and writing-homework-machines <br>https://www.scmp.com/yp/discover/entertainment/tech-gaming/article/3060907/chinese-schoolgirl-caught-using-robot-write<br>
A lot of exhibitions, a lot of thirst for recognition.
I get the feeling that all these artists have only attempted to create randomness and chaos, without actually creating it. Some sort of extreme quest of control over that human desire for chaotic disorder. Randomness by computer is still perceived as the total antithesis of randomness by humans, but is this really so?
it's not that we really know where randomness originates and develops in the human mind, it might be more logical than we think.
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After 2000 artists began to rediscover pen plotters as extragavant, customizable devices, even if the support for driving pen plotters directly or saving files as HP-GL has disappeared from most commercial graphics applications. Vermes is one of the last companies that makes pens for all HP pen plotters, even the earliest models. Usually pen plotters use fiber pens, but ball-point plotter pens are sometimes available, with refillable clear plastic ink reservoirs.
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<div style="text-align: left;">
Modern day plotters used by artists around the world include: the AXidraw (flatbed plotter) by Evil Mad Scientis Labs, its firmware is open source: https://github.com/evil-mad/axidraw.<br> (lista instagram)
> ''that’s too philosophical, show us some weird things'' <br>
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https://blog.dbalan.in/blog/2019/02/23/resurracting-an-hp-7440a-plotter/index.html


==making art==
Artists that use pen plotters as mediums, that are mainly involved in the generative art movement, explore '''human-machine interactions''' (Sougwen Chun), even seeing them even as '''conversational''' (LIA), focusing on '''dynamic-fluid-esoteric forms''' and structures to get over the feeling of rigidity and inflexibility of the pen plotter involvement (Alida Sun). They let plotters be '''performative devices''' and '''storyteller''', creating spaces that aim to even just enhance human interactions (Jürg Lehni-Jessica In), creating illusory fake organic structures, playing between '''harmony and chaos''' (Tyler Hobbs - Zancan), self-building '''frankenstein''' punk machines with paintball guns (Antigoon), working on '''data visualisation''' and '''sound design''' (Peco). There are so many artists out there that are involved in the pen plotter art, but, if I may, in a quite superficial way. The machine is the machine and it will draw the generated artwork. But isn’t there something more?<br>
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Writing about pen plotter art without mentioning computer and generative art is impossible.
It’s somehow sad that plotters have been regarded merely as tools, peripheral tools. Yet, how wonderful the moment when a symbiotic relationship is built between the materials involved and the human action of letting the machine be a companion more than a device. Boundaries blur, and the machine assumes a quasi-autonomous presence in the artistic process. A dynamic of interplay, welcoming complexities and material vulnerabilities that working with this kind of machines introduces. Maybe even embracing the unexpected as a sort of performative act. Could this be seen as '''fetishization'''? Probably.<br>
Pen plotters undeniably played a significant role in the evolution of both these fields, as they were among the earliest digital tools available to artists.
 
One of the first computer art exhibitions, that featured pen plotter generated artworks, was held at the Howard Wise Gallery in New York in the 1960s. The exhibition featured the works of two Bell Labs researchers, Michael A. Noll and Bela Julesz, who used the SC-4020 microfilm plotter for their creations. Bell Labs was all about pushing boundaries, encouraging the development of new softwares that could be used beyond art to scientific purposes.
 
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Anyway, it was Nake who was one of the first to sign his works with '''NAKE/ER56/Z64''', acknowledging the computer system and plotter as integral collaborators in his artworks. The discussion about the legitimacy of recognizing hardware/software as authors, giving them a characteristic of humanity, is still very much open, now even more so than before. If it is the machine that produces the artwork, does that make it the only legitimate author? <br>
In the early days of computer art, computers were accessible mainly to mathematicians, scientists, and programmers, so they were the ones that explored creative expression through digital mediums.<br>
It seems that James Pyle, from CalComp, thought so, when he held an international art competition in which plotters had to be the main tools used. Most of the art pieces didn’t have any attribution to the human artist involved in the creation of the pieces, just to CalComp :)<br>
Continuing into the 1970s, a growing number of artists started to have access to computer labs, fuelling some fruitful collaboration between art and science. One of those fields collision happened between Katherine Nash, professor of art, and Richard Williams, professor of computer engineering: they developed the programming language ART 1 (original Processing), created specifically to instruct computer science students in the creation of basic computer graphics.<br>
 
 
Some of the pioneers of computer and generative art that used pen plotters are: Manfred Mohr, Frieder Nake, Georg Nees, Herbert W Franke, Vera Molnar, Harold Cohen, Mark Wilson, Peter Beyls, Roman Verostko, Jean-Pierre Hébert, Casey Reas. <br>
 
 
op art exhibit titled The Responsive Eye in 1965 held by the Museum of Modern Art in New York City.<br>
The Cube: Theme and Variation Series by Edward Zajec<br>
Mechano Drawing by Zoran Radović<br>
Dioximoirékinesis by Irving John Good and Martine Vite<br>
Computer-generated images by Irving John Good<br>
Matrix Multiplication by Frieder Nake, , 1967. This visualisation of a mathematical process was plotted using a GRAPHOMAT plotter<br>
SkewR34 by Mark Wilson, 1983.<br>
Coded Algorithmic Drawing (#9) by Joan Truckenbord, drawing was generated with FORTRAN and drawn by a CalComp plotter<br>
The Field by Grace C. Hertlein http://recodeproject.com/<br>
1969 plotter piece by Edward Zajec titled RAM 1311<br>
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Pavlovpulus, Matt DesLauriers, Tyler Hobbs, Zancan, Landlinesart, Alida Sun, Joanie Lemercier, Shedrawswithcode, Sougwen Chung, Julien Gachadoat, Rev Dan Catt, Lars Wander, Frederik Vanhoutte, Arno Beck, DiDiffArt, LIA, Targz, Jürg Lehni and Loackme.
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There is something mystical, enigmatic, about how pen plotting challenges what is the conventional notion of what drawing as an act is.<br>
Drawing is viewed as an inherently human process, we are quite proud of it. Art history is based on that epic moment when some person decided to draw scenes of hunting and drugged shaman dances inside caves. We glorify the act of visual creation. The endlessly repeating of that act by the plotter alters that sense of sacredness that arises from the artist's personal touch, it makes some existential insecurities emerge.<br>
'''Let’s embrace this!''' Let’s embrace a vision of the plotter as a machine that disrupts, add that transgressive element into the artistic process that is so much needed.<br>
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Acrylcode Berlin (Felipe Infantino), Algorigraph (Fabian Eck), Antigoon, Frank Aubry + Andreas Rau, Barbe Generative Diary (Peco), Martin Bauer, Arno Beck, Deniz Bicer, Chris Bly (machine.arm), Bondtruluv, Geoffrey Bradway (Chromatocosmos), Bustavo (Gustavo Muñoz), Joel Cammarata, Dan Catt (Revdancatt), CEK (Giorgio Cecatto), Michelle Chandra, Sougwen Chung (Studio Scilicet), Desmond Clarke , Andee Collard, Dirk Dallas (Dirka), Matt DesLauriers, DiDiffArt (Diana Becker), The Dot Is Black (David Mrugala), Kristine Erstad Vegard, Julien Espagnon, Allen F, Sven Björn Fi, Hiromasa Fukaji + Horikawa Junichiro, Julien Gachadoat (v3ga), Pablo Garcia , Generative Artworks, Kjetil Golid (Kgolid), Greweb, David Guerrero, Cory Haber, Licia He, Tyler Hobbs, Matthew Hughes, Jessica In (Shedrawswithcode), Ralf Jacobs, Jenslabs (Jens Clarholm), JMY (Jimmy Herdberg), Floris de Jonge, So Kanno + Takahiro Yamaguchi, Simon Kirby, Daniela Kröhnert, Guillaume Lagarde (Entropismes), Land Lines Art, Beatrice Lartigue (Lab212 Collective), Tom Lauerman, Sunjoo Lee + Ko de Beer, Jürg Lehni, LIA, Loackme, Lenia Mascha, Simone Mauer, Kyle McDonald + Matt Mets, Arjan van der Meij, Liz Melchor, Huw Messie, Emre Meydan (Thresfold), Mmachine, Cezar Mocan, Moodsoup (Stefan Reyniers), Ivan Murit, Sohan Murthy, Kris Northern (phidelity), Noumenal, Dimitri Otxa, Pierre Paslier, Pavlovpolus (Pablo Azóçar A.), Abe Pazos Solatie, Arnaud Pfeffer, Playmodes, Paul Prudence, Paul Rickards, Meg Rodger, Con Ryan, Catalin Sandu, Heliodoro Santos Sánchez, Lisa Schwalbe (Gridtheline), Marcel Schwittlick, Seohyo (Seo Hyojung), Sfd.Art (Andreas Schönfelder), Luke Shannon, Shih Wei-Chieh , Spatial Matters (Nicola Lorusso), Strano (Marcel Giannoccaro), Studio Joanie Lemercier , Studio Strauss , Alida Sun, Maksim Surguy, Targz, Tofa (Christopher Noelle), Patrick Tresset, Frederick Vanhoutte (Wblut), Benjamin Vedrenne, Lars Wander, Victor Wong, Zancan.
Is it still ok to go on? Usually, it is the end part, in a presentation of this type, that tries to be all nice and pompous and glossy. It is the grand finale, so get to the end.<br>
After having conversations about pen plotting with both Thijs and Manetta, who I thank deeply, I would say that I may have gotten a little bit entangled in my typical flat bullet point fine art analysis, like I would speak about established art movements (even if art is not established at all, movements don’t even exist in the real sense of things).
I would say xpub experimentations got over my head while I was exploring all those polished generative art online exhibitions. I should speak more about what pen plotting is for us as a community of students, and what might be.
Indeed, pen plotting has been a great community tool shaping for us. It became the glue that let us stick together more in the studio and let us know more about each other, <big>'''how cheesy!'''</big><br>
As we are all from different backgrounds, we let machines be our companions in what is our own personal digging into experimental publishing, media archeology, skill building, tool making, performing acts, all done collectively. <big>'''A plotter culture is emerging, it surely is.'''</big><br>
For so long, I tried to destroy the wall between me and pen plotting as a technical tool, and only thanks to the skills and energy of my classmates did I succeed partially. Perhaps my role is to silently rant, more or less, about the techno-philosophical-exciting aspects of (lovely) metal boxes.<br>
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As I believe our xpub bubble is a bubble but still influenced by the outside world, I am looking forward to connecting with other bubbles, conquering the world together or something. <big>'''There must be life out there!'''</big>
 
 
 
 
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http://www.horst-zuse.homepage.t-online.de/z64.html
https://computerhistory.org/
https://ethw.org/First-Hand:Howard_Wise_Gallery_Show_of_Digital_Art_and_Patterns_(1965):_A_50th_Anniversary_Memoir
(Computer Program for Artists: ART 1
Katherine Nash, Richard H. Williams) https://www.jstor.org/stable/1572264
==languages==
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'''HP-GL'''
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HP-GL stands for Hewlett-Packard Graphics Language, and it's basically a set of commands created by Hewlett-Packard to control their pen plotters. Initially, it was specifically for HP plotters, but now it's become the go-to standard for many CAD programs and plotters out there. standard command.<br>
In HP-GL the coordinates are at the center. The language allows negative coordinate values.<br>
HP-GL/2, which is much more powerful and efficient, has become the standard.
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example of HP-GL script drawing a line:<br>
<small><small>(*ˊᗜˋ*)/ Thanks to:<br>
 
Stefano, Edoardo, Thijs, Manetta<br>
SP1;                (Select Pen)
PA500,500;          (Plot Absolute, x/y coordinates)
PD;                  (Pen Down)
PR0,1000;            (Plot Relative, units in y direction)
PU;                  (Pen Up)
SP;                  (Select Pen - back in the stall)
 
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'''HP-GL/2'''
Reference Links:<br>
https://www.hpmuseum.net/exhibit.php?class=4&cat=24<br>
https://www.rightclicksave.com/article/an-interview-with-frieder-nake<br>
https://computerhistory.org/ <br>
https://monoskop.org/images/7/7b/Noll_A_Michael_1967_The_digital_computer_as_a_creative_medium.pdf<br>
https://ethw.org/First-Hand:Howard_Wise_Gallery_Show_of_Digital_Art_and_Patterns_(1965):_A_50th_Anniversary_Memoir (Computer Program for Artists: ART 1 Katherine Nash, Richard H. Williams) <br><br>https://www.jstor.org/stable/1572264<br>https://www.shapr3d.com/history-of-cad/computervision<br>
https://medium.com/nightingale/pen-plotters-are-the-perfect-tool-for-data-storytelling-b05c71ceadd5<br>
https://www.generativehut.com/<br>
https://news.ycombinator.com/item?id=16495236<br></small></small>
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Unlike its predecessor HP-GL, which was tailored for pen plotters, HP-GL/2 introduces advanced drawing functionalities specifically oriented to raster plotters. Moreover, HP-GL/2 extends its capabilities beyond HP-GL by offering several additional features like enabling printing in color or grayscale, ability to print data containing both vector and image data, creating files that are 2 to 5 times smaller.. HP-GL 2 places the coordinate origin at the top left corner of the page and does not support negative coordinates (in absolute mode).
NP = number of pens (pens are numbered from zero, not one)
PC = pen color (0 white, 1 black, 2 green, 4 yellow, 5 blue, 6 magenta, 7 cyan)
PW = pen width
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<div style="float:right;"><big><big><big>✦ .  ⁺   . ✦ .  ⁺   . ✦</big></big></big></div>
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'''HP RTL'''
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HP RTL is a graphics language created specifically for rendering image data, (bitmaps). Basically, image data consists of dots that form a visual representation. When integrated with line drawings created by a standard plotter, this combination allows for vivid illustrations. In particular, HP RTL facilitates fast drawing processes by compressing large image data for efficient output, allowing for high-speed rendering.<br>

Latest revision as of 17:54, 3 May 2024


by Alessia
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Personal essay evolved after a sudden presentation about pen plotting to some unsuspecting friends (> their random comments here included), inspired by zulip messages and insomnia

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What even is a pen plotter?

> Can I say that it sounds funny as a name? plotter
> Oh wait I saw them on tiktok there are plenty of videos of these m a c h i n e r i e s
> Yes, kinda trending


They are iconic devices, magical pioneers of digital graphic reproduction, machines that left an indelible mark in the history of visual art + computer graphics and in each of our hearts. Even if sadly pen plotters were replaced by large format inkjet printers, we are now experiencing a new renaissance for them, even outside the xpub bubble. With such nostalgic appeal they attract even more. Artists from all over the world acclaim them again as their new favourite tools, to be safeguarded, cherished, resurrected.

Modern digital plotters, which are still in use today, evolved from analog XY writer plotters that operated along two axes of motion. They were the most efficient way to draw vector graphics, rather than raster images, making them ideal for tasks like drafting blueprints, graphing data, and producing large-format maps.

> I don’t understand, weren't you doing things with the radio?
> pen plotters look even scarier than computers I swear


Now some historical facts! 🖼

One of the earliest plotters was Konrad Zuse's Graphomat Z64 in 1958, a punch card controlled plotter, driven by two gears. Frieder Nake, THE Algorist (along with Vera Molnar, Georg Nees, A. Michael Noll, and Manfred Mohr) used this machine, for which he developed a software for his experimentations. One of the first mechanical and commercial plotters was the CalComp 565, from 1966, a drum plotter that worked by placing the paper over a roller that moved the paper back and forth along the X axis and the pen moved back and forth along the Y axis.

> luckily you are showing images I wouldn’t understand a thing without them
> damn diabolic m a c h i n e r i e s


The progress of plotter technology was a key part for the development of CAD (Computer Aided-Design, software used by designers and engineers to create detailed digital drawings and models of objects or structures). The Computervision's Interact I plotter, was designed to be a combination of a digitiser and a plotter, serving as an interactive terminal. Users could copy a sketch, see it on a screen, edit it, and then print out the changes.
The great change for pen plotters arrived with the crafting of the flatbed plotter. As the name suggests, the surface to be drawn on was laid out flat, different from before, as paper was rolled up on a drum. HP was the big guy for commercial plotters. HP's first plotter was the 9125A flatbed plotter, introduced in 1968. Again HP, the HP 7470, born in the 80s, introduced the grit wheel mechanism: rollers pressing at opposite edges of the sheet to control movement. The pen is mounted on a carriage that moves back and forth in a line between the grit wheels. Plotters were also used in Create-A-Card kiosks, to make little postcards, that were available for a while in supermarkets. They used the HP 7475A six-pen plotter.

The most used modern pen plotters at the moment are the one from AXidraw by Evil Mad Scientist Labs, their firmware is open source: https://github.com/evil-mad/axidraw.

> I’ll still use my hp printer
> I don’t understand how this is connected to the radio



I am done, done, let's speak about art c’mooonn.
Firstly, pen plotter art: is it really art?
There isn’t much about plotter art in general, in books or on the internet. Grouping people together is always a way to ghettoise them, what does it even mean to be a pen plotter artist? Is there any kind of typical philosophy that is embedded to practising art through this kind of machine in particular? Each artist brings their unique perspective and creative approach to the intersection of art and technology. Art romantically is creativity, but in the real world art is money. We saw this in the fascinating rise of NTF that stained pen plotter art as well :)  

> NFTs are still a thing?


I got to discover (from an Interview with Frieder Nake by ‍Mark Amerika) that THE algorists, even if they were programmers, still had people writing codes for them. This made me smile, remembering all those great personalities, those artists whose names are printed into history books, whose real artistic production is reduced to the bone, maybe even less. Who knows how many works of art have been created with the creator, to whom these works are attributed, moving their brilliant hand just to sign them, while studio cadets sweated over fresh canvases? Or in this case: over keyboards.

> uuh we are getting into the social critique part now. spicy.
> like my internship you mean. I feel this.
> Idk, maybe they were paid this time, not enslaved like renaissance boys


I had prepared a very long list of names, all contemporary artists, as I wanted to find mainly artists that are still involved in the art scene, who have jumped from the bank of computer science to the bank of visual art, falling into exhibitions, museums, glossy newspapers superficial interviews. I don’t really want to show it anymore (hahaha no it's here actually list pen plotter artists ). It is a very different world from our studio and perhaps from those who see pen plotters in a more sincere, curious, way of rediscovering forgotten tools. I also wonder how much my own gaze is directed at the art industry more than at the creative act itself, there would be too much to say. I will not tell you about this whole list, just some hints.

> but can the plotter do other stuff other than plotting?
> maybe make food? Sing a song?
> what’s the point of making something do what it is expected to do?


Generative art! Talking about pen plotter art without mentioning computer and generative art is impossible. Pen plotters undeniably played an important role in the evolution of both of these art movements, as they were among the earliest digital tools available to mathematicians, scientists, and programmers to push that immaterial boundary between art and science.

Mafred Mohr, Vera Molnar Frieder Nake, George Ness, Herbert W. Franke, are all great science-computer-artists that experimented with generative art and visualised their ideas through pen plotting. It’s interesting to see how pen plotting built a bridge between new digital computer technologies and traditional printmaking techniques. I am speaking about dirty hands, acids, and staining inks that were at some point being linked to the cold grey plastic reality of computer hardwares. A whole new world.

Pen plotters, as computers, weren’t really naturalised, common to have around, Mohr had to use the ones from the Paris Institut Météorologique. I imagine what the guys there would have thought about this person using their machinery, for art??? Other remarkable pioneers of pen plotter art still included under the generative art umbrella are: Harold Cohen, Mark Wilson, Peter Beyls, Roman Verostko, Jean-Pierre Hébert, Casey Reas.

A lot of exhibitions, a lot of thirst for recognition. I get the feeling that all these artists have only attempted to create randomness and chaos, without actually creating it. Some sort of extreme quest of control over that human desire for chaotic disorder. Randomness by computer is still perceived as the total antithesis of randomness by humans, but is this really so? it's not that we really know where randomness originates and develops in the human mind, it might be more logical than we think.

> that’s too philosophical, show us some weird things


Artists that use pen plotters as mediums, that are mainly involved in the generative art movement, explore human-machine interactions (Sougwen Chun), even seeing them even as conversational (LIA), focusing on dynamic-fluid-esoteric forms and structures to get over the feeling of rigidity and inflexibility of the pen plotter involvement (Alida Sun). They let plotters be performative devices and storyteller, creating spaces that aim to even just enhance human interactions (Jürg Lehni-Jessica In), creating illusory fake organic structures, playing between harmony and chaos (Tyler Hobbs - Zancan), self-building frankenstein punk machines with paintball guns (Antigoon), working on data visualisation and sound design (Peco). There are so many artists out there that are involved in the pen plotter art, but, if I may, in a quite superficial way. The machine is the machine and it will draw the generated artwork. But isn’t there something more?

It’s somehow sad that plotters have been regarded merely as tools, peripheral tools. Yet, how wonderful the moment when a symbiotic relationship is built between the materials involved and the human action of letting the machine be a companion more than a device. Boundaries blur, and the machine assumes a quasi-autonomous presence in the artistic process. A dynamic of interplay, welcoming complexities and material vulnerabilities that working with this kind of machines introduces. Maybe even embracing the unexpected as a sort of performative act. Could this be seen as fetishization? Probably.

Anyway, it was Nake who was one of the first to sign his works with NAKE/ER56/Z64, acknowledging the computer system and plotter as integral collaborators in his artworks. The discussion about the legitimacy of recognizing hardware/software as authors, giving them a characteristic of humanity, is still very much open, now even more so than before. If it is the machine that produces the artwork, does that make it the only legitimate author?
It seems that James Pyle, from CalComp, thought so, when he held an international art competition in which plotters had to be the main tools used. Most of the art pieces didn’t have any attribution to the human artist involved in the creation of the pieces, just to CalComp :)




There is something mystical, enigmatic, about how pen plotting challenges what is the conventional notion of what drawing as an act is.
Drawing is viewed as an inherently human process, we are quite proud of it. Art history is based on that epic moment when some person decided to draw scenes of hunting and drugged shaman dances inside caves. We glorify the act of visual creation. The endlessly repeating of that act by the plotter alters that sense of sacredness that arises from the artist's personal touch, it makes some existential insecurities emerge.
Let’s embrace this! Let’s embrace a vision of the plotter as a machine that disrupts, add that transgressive element into the artistic process that is so much needed.

Is it still ok to go on? Usually, it is the end part, in a presentation of this type, that tries to be all nice and pompous and glossy. It is the grand finale, so get to the end.
After having conversations about pen plotting with both Thijs and Manetta, who I thank deeply, I would say that I may have gotten a little bit entangled in my typical flat bullet point fine art analysis, like I would speak about established art movements (even if art is not established at all, movements don’t even exist in the real sense of things). I would say xpub experimentations got over my head while I was exploring all those polished generative art online exhibitions. I should speak more about what pen plotting is for us as a community of students, and what might be. Indeed, pen plotting has been a great community tool shaping for us. It became the glue that let us stick together more in the studio and let us know more about each other, how cheesy!
As we are all from different backgrounds, we let machines be our companions in what is our own personal digging into experimental publishing, media archeology, skill building, tool making, performing acts, all done collectively. A plotter culture is emerging, it surely is.
For so long, I tried to destroy the wall between me and pen plotting as a technical tool, and only thanks to the skills and energy of my classmates did I succeed partially. Perhaps my role is to silently rant, more or less, about the techno-philosophical-exciting aspects of (lovely) metal boxes.

As I believe our xpub bubble is a bubble but still influenced by the outside world, I am looking forward to connecting with other bubbles, conquering the world together or something. There must be life out there!



(*ˊᗜˋ*)/ Thanks to:
Stefano, Edoardo, Thijs, Manetta

Reference Links:
https://www.hpmuseum.net/exhibit.php?class=4&cat=24
https://www.rightclicksave.com/article/an-interview-with-frieder-nake
https://computerhistory.org/
https://monoskop.org/images/7/7b/Noll_A_Michael_1967_The_digital_computer_as_a_creative_medium.pdf
https://ethw.org/First-Hand:Howard_Wise_Gallery_Show_of_Digital_Art_and_Patterns_(1965):_A_50th_Anniversary_Memoir (Computer Program for Artists: ART 1 Katherine Nash, Richard H. Williams)

https://www.jstor.org/stable/1572264
https://www.shapr3d.com/history-of-cad/computervision
https://medium.com/nightingale/pen-plotters-are-the-perfect-tool-for-data-storytelling-b05c71ceadd5
https://www.generativehut.com/
https://news.ycombinator.com/item?id=16495236


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