{"id":15749,"date":"2026-04-02T17:57:09","date_gmt":"2026-04-02T15:57:09","guid":{"rendered":"https:\/\/dam.org\/museum\/?post_type=artists_ui&p=15749"},"modified":"2026-07-04T15:25:02","modified_gmt":"2026-07-04T13:25:02","slug":"colour-grid","status":"publish","type":"artists_ui","link":"https:\/\/dam.org\/museum\/artists_ui\/artists\/herbert-franke\/colour-grid\/","title":{"rendered":"The Colour Grid series (1973)"},"content":{"rendered":"

[vc_row shift_y=”0″ z_index=”0″ el_class=”portfolio”][vc_column][\/vc_column][\/vc_row][vc_row][vc_column width=”2\/3″][vc_gallery type=”image_grid” images=”15750,15751″ img_size=”medium” css=”” slides_per_view=”2″ hover_effect=”opacity” css_animation_each=”true”][\/vc_column][vc_column width=”1\/3″][vc_custom_heading text=”Colour Grid Series (1973)” use_theme_fonts=”yes” css=”” font_size=”16″ text_align=”left” font_weight=”600″][vc_column_text]The images in the Colour Grid Series were created using the Sicograph, a device developed in 1973 for medical use and one of the first Sicographs capable of digitally analysing X-ray images, converting them into colour and printing them.<\/p>\n

Instead of X-ray images, however, random patterns were fed into the system via punch cards and altered, using image-processing techniques such as smoothing contours, merging points into areas, or reducing colour values. The changes were visible in real time on a monitor.<\/p>\n

The output was produced by a precursor to today\u2019s inkjet plotters, which applied liquid ink through nozzles onto paper stretched over a rotating drum, scanning it line by line, with the ink intensity controlled electronically.<\/p>\n

The characteristic colour scheme resulted from using only the three primary colours \u2013 red, green and blue \u2013 without black.<\/p>\n


\nMore works
\n<\/strong>Rotations\/Projections (1974)<\/a>
\nThe Biennale Serigraphs (1954-1969)<\/a>
\nDance of the Electrons (1958\/1959-2018)<\/a><\/p>\n

\u00a0<\/strong>[\/vc_column_text][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"

[vc_row shift_y=”0″ z_index=”0″ el_class=”portfolio”][vc_column][\/vc_column][\/vc_row][vc_row][vc_column width=”2\/3″][vc_gallery type=”image_grid” images=”15750,15751″ img_size=”medium” css=”” slides_per_view=”2″ hover_effect=”opacity” css_animation_each=”true”][\/vc_column][vc_column width=”1\/3″][vc_custom_heading text=”Colour Grid Series (1973)” use_theme_fonts=”yes” css=”” font_size=”16″ text_align=”left” font_weight=”600″][vc_column_text]The images in the Colour Grid Series were created using the Sicograph, a device developed in 1973 for medical use and one of the first Sicographs capable of digitally analysing X-ray images, converting them…<\/p>\n

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