# Early Computer Art & Plotter Graphics

> An early computational print idiom that turns explicit procedures and bounded chance into visible marks on paper. Fine paths or coloured modules, repeated units, omissions and changes of density make the rule and its variations readable. Plotter drawings circulated alongside screenprinted and offset versions; this entry centres that paper-based abstraction, not all computer art, pixel imagery or later variable branding.

- Period: 1963–1980
- Where: Central Europe, Western Europe, North America, Southern Europe
- Origin: University and industrial computing laboratories and their artist collaborators, including Stuttgart, Bell Labs in the United States and Paris; Zagreb's New Tendencies exhibitions and bit international connected computational graphics with visual research from 1968. The period bounds the early laboratory-and-paper idiom, not the invention or disappearance of computer art; 1980 is a curatorial boundary rather than a documented collective endpoint.
- Branch: Digital native
- Also known as: Early algorithmic graphics, Computergraphik, Early pen-plotter art
- Page: https://stylogeny.com/styles/early-computer-plotter-graphics/

## How it works

- Define a small repertoire of lines, circles or other geometric units, then generate their positions and relations through an explicit procedure.
- Make controlled variation visible through displacement, rotation, omission, overlap or changing density rather than hand-painted expression.
- Use fine, relatively even strokes on a light paper ground; let accumulations and intersections of paths produce darker areas.
- Keep a repeated field or coordinate structure legible while allowing local irregularities; do not require optical vibration or simulated depth.
- Give the drawing room within the sheet and keep any work identifiers, signatures and edition annotations subordinate to the generated image.
- Distinguish the generated drawing from its printed edition, and treat colour-module prints as a secondary register rather than forcing every work into monochrome linework.

## Its design choices

Defining choices make the style, characteristic ones are usual, occasional ones turn up now and then.

### Layout & composition
- [Modular grid](https://stylogeny.com/design-choices/modular-grid/) (characteristic)
- [All-over field](https://stylogeny.com/design-choices/all-over-field/) (characteristic)
- [Dynamic asymmetry](https://stylogeny.com/design-choices/dynamic-asymmetry/) (occasional)
- [Framed panels](https://stylogeny.com/design-choices/framed-panels/) (occasional)
- [Isolated object](https://stylogeny.com/design-choices/isolated-object/) (occasional)

### Space & hierarchy
- [Repetition & rhythm](https://stylogeny.com/design-choices/repetition-and-rhythm/) (defining)
- [Generous white space](https://stylogeny.com/design-choices/generous-white-space/) (characteristic)
- [Flat hierarchy](https://stylogeny.com/design-choices/flat-hierarchy/) (characteristic)
- [Illusion of depth](https://stylogeny.com/design-choices/illusion-of-depth/) (occasional)

### Typography
- [Grotesque & neo-grotesque](https://stylogeny.com/design-choices/grotesque-and-neo-grotesque/) (occasional)
- [Hand-lettering](https://stylogeny.com/design-choices/hand-lettering/) (occasional)

### Colour
- [Light ground](https://stylogeny.com/design-choices/light-ground/) (characteristic)
- [Monochrome](https://stylogeny.com/design-choices/monochrome/) (characteristic)
- [Full polychrome](https://stylogeny.com/design-choices/full-polychrome/) (occasional)
- [Flat fields](https://stylogeny.com/design-choices/flat-fields/) (occasional)

### Form & shape
- [Non-representational](https://stylogeny.com/design-choices/non-representational/) (defining)
- [Geometric primitives](https://stylogeny.com/design-choices/geometric-primitives/) (characteristic)
- [Rectilinear](https://stylogeny.com/design-choices/rectilinear/) (characteristic)
- [Biomorphic curves](https://stylogeny.com/design-choices/biomorphic-curves/) (occasional)
- [Optical pattern](https://stylogeny.com/design-choices/optical-pattern/) (occasional)

### Surface & texture
- [Flat](https://stylogeny.com/design-choices/flat/) (characteristic)

### Ornament
- [Ornament-free](https://stylogeny.com/design-choices/ornament-free/) (characteristic)

### Imagery
- [Generative imagery](https://stylogeny.com/design-choices/generative-imagery/) (defining)
- [Line illustration](https://stylogeny.com/design-choices/line-illustration/) (characteristic)
- [Pattern & repeat](https://stylogeny.com/design-choices/pattern-and-repeat/) (characteristic)

### Medium & production
- [Generative & AI](https://stylogeny.com/design-choices/generative-and-ai/) (defining)
- [Screen printing](https://stylogeny.com/design-choices/screen-printing/) (characteristic)
- [Offset printing](https://stylogeny.com/design-choices/offset-printing/) (occasional)

### Tone & intent
- [Rational & objective](https://stylogeny.com/design-choices/rational-and-objective/) (characteristic)
- [Technological & futurist](https://stylogeny.com/design-choices/technological-and-futurist/) (characteristic)
- [Calm & contemplative](https://stylogeny.com/design-choices/calm-and-contemplative/) (occasional)

Avoids: Painterly brushwork, Skeuomorphic material, Chrome & 3D render, Gloss & highlights, Floral & vegetal, Emblems & badges, Ornamented display, Type as image

Palette: #f5f2e9, #171717, #28249a, #b24b88, #438446

Typefaces: Small technical work identifiers and captions subordinate to the image (visible in the lower margins of Mohr's P-62 and Nake's Hommage; exact face and typographic classification unconfirmed), Handwritten artist signatures and edition numerals in the sheet margin (visible in the Nees, Molnár and Knowlton examples; not headline lettering)

Known for: Georg Nees, Achsenparalleler Irrweg (1964), ZKM: ink-on-paper plotter drawing generated with ALGOL on a Siemens 2002 and output on a Zuse Graphomat Z64; overlapping orthogonal paths rather than a pixel mosaic.; Frieder Nake, Hommage à Paul Klee Nr. 2 (1965), ZKM: the collection object is a screenprint after a plotter drawing; irregular horizontal divisions, precise circles and fields of crossing or parallel lines.; Vera Molnár, Interruptions (1969), Paris, V&A E.269-2011: a plotter drawing whose short, differently oriented strokes form a field broken by empty patches; the museum describes an iterative series of algorithmic modifications.; Manfred Mohr, P-62 (floating points) (1970), Paris, V&A E.186-2008: an offset lithograph after a plotter drawing, with clusters of curved parallel paths and large areas of unmarked paper.; Ken Knowlton, Untitled, from Art Ex Machina (1972), V&A E.236:12-2008: a computer-generated colour screenprint published by Gilles Gheerbrant in Montréal; a secondary modular-colour strand within a portfolio also containing Barbadillo, Kawano, Mohr, Nake and Nees.

## Where it comes from, and what it’s close to

- Influenced by: [Op Art Graphics](https://stylogeny.com/styles/op-art.md) (1960–1975)
- Alike in its design choices: [Generative & Dynamic Identities](https://stylogeny.com/styles/generative-identity.md) (2007–present), 81% alike
- Alike in its design choices: [Brazilian Concrete Design](https://stylogeny.com/styles/brazilian-concrete.md) (1951–1975), 65% alike
- Alike in its design choices: [Zagreb Modernist Graphics (EXAT 51 to Teatar &TD)](https://stylogeny.com/styles/zagreb-modernist-graphics.md) (1951–1975), 59% alike
- Alike in its design choices: [Total Design & Dutch Functionalism](https://stylogeny.com/styles/dutch-total-design.md) (1963–1990), 57% alike
- Alike in its design choices: [HfG Ulm Systematic Design](https://stylogeny.com/styles/ulm-school.md) (1953–1968), 56% alike
- Alike in its design choices: [Minimalist Graphic Design](https://stylogeny.com/styles/minimalism.md) (1965–present), 56% alike

## Sources

- https://zkm.de/en/artworks/achsenparalleler-irrweg — ZKM object record: Nees, 1964, ink on paper, ALGOL, Siemens 2002 and Zuse Graphomat Z64. Museum image examined: thin orthogonal overlapping paths on a pale sheet, wide margins and a handwritten signature. Copyright is retained; no image reuse licence claimed.
- https://zkm.de/en/artworks/hommage-a-paul-klee-nr-2 — ZKM object record and Anna-Maria Drago Jekal's interpretation: Nake's Stuttgart experiments began in 1963; 1965 work inspired by Klee; screenprint after plotter drawing, not an original pen drawing. Museum image examined: irregular bands, circles, variable-density straight paths and small technical lettering.
- https://api.vam.ac.uk/v2/museumobject/O1193775 — V&A Interruptions, E.269-2011: Molnár, Paris, 1969, plotter drawing; 2018 gallery label explains iterative algorithm modification. Museum image 2011EY6963 examined: short black strokes, omissions, a light ground and marginal handwritten annotation.
- https://api.vam.ac.uk/v2/museumobject/O201403 — V&A P-62 (floating points), E.186-2008: Mohr, Paris, 1970, offset lithograph after a plotter drawing; program includes random variables within given options. Museum image 2008BT5090 examined: curved parallel lines, clustered forms, overlap, generous empty areas, fine border and small work identifiers. This supports occasional curvature and depth effects, not an exclusively orthogonal genome.
- https://api.vam.ac.uk/v2/museumobject/O152641 — V&A Art Ex Machina contribution, E.236:12-2008: Knowlton, screenprint, 1972, published in Montréal by Gilles Gheerbrant; portfolio contributors verified. Museum image 2008BT5064 examined: purple-blue, pink and green modules, checker-like fields and stepped contours, with marginal signature and edition number. This is an exception to the dominant monochrome fine-line register, not evidence that all early computational prints were plotter drawings.
- https://www.vam.ac.uk/articles/digital-art — V&A, Digital art, updated 17 April 2024: laboratory access in France, plotters' contribution to complex geometric linework and Molnár's encounters with Op art. Used for technological and historical context, not as support for every claim in the much broader category of digital art.
- https://zkm.de/en/publications/a-little-known-story-about-a-movement-a-magazine-and-the-computers-arrival-in-art — Margit Rosen, ed., A Little-Known Story About a Movement, a Magazine, and the Computer's Arrival in Art: New Tendencies and Bit International, 1961–1973 (MIT Press, 2011). ZKM's publication description verifies Zagreb's visual-research network, the 1968 magazine and links from Op and Constructivist art to computer graphics. The atlas's specifically Russian Constructivism entry is not asserted as a direct parent of these diverse practitioners.
- Scope and calibration: the genome describes the early paper-based abstract register, not all computer art or all output by the named makers. No plotter-medium trait exists in the vocabulary; medium.generative-code records the procedure, while medium.hand-drawn is deliberately omitted. Typography is occasional marginal lettering, not a defining house face; type.grotesque at 0.3 is a provisional mapping of the marginal technical lettering, not a verified typographic classification or house face. Light grounds and fine linework are characteristic, not defining: Knowlton's retained colour-module exemplar has a blue-purple picture field and filled stepped modules; its white sheet margins do not make the image ground light. The palette is representative, not an ink specification. Compared with op-art, optical vibration and depth are optional; compared with generative-identity, variable branding and web or motion delivery are absent; compared with demoscene-graphics and bitmap-pixel, neither screen pixels nor display lettering defines the form. The 1980 endpoint is a catalogue scope choice, not a verified end date for plotter practice.

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From Stylogeny (https://stylogeny.com/), an atlas of graphic-design styles by Van Riel Online Services. How it is made: https://stylogeny.com/about/. Cite as: Stylogeny, “Early Computer Art & Plotter Graphics”, https://stylogeny.com/styles/early-computer-plotter-graphics/