{"id":"collotype","name":"Collotype","ja":"コロタイプ","era":"19th century–present","family":"平版印刷","source":{"title":"University of Illinois Library — PSAP: Photomechanical Prints","url":"https://psap.library.illinois.edu/collection-id-guide/photomechanical"},"essence":"写真の像をゼラチン層を持つ版へ移してインクで刷る写真製版の技法。微細で不規則な網状の構造が、細部と滑らかな濃淡を表す。規則的な網点によるハーフトーンとは異なり、写真や美術作品の復製にも使われた。コラグラフとは名前が似ても版の作り方が違う。","cues":["写真や原画に由来する精細な像","連続して見える滑らかな階調","拡大時の不規則で微細な網状構造","規則的な網点が見えない調子"],"intents":["技術","静けさ"],"pair":["photogravure","halftone"],"study":["Eadweard Muybridge — Animal Locomotion","University of Illinois Library — PSAP: Photomechanical Prints","Getty — Atlas of Analytical Signatures: Collotype"],"avoid":"画面上の画像だけでは微細構造が消えることがある。所蔵館の技法記録を確認し、コラグラフと混同しない。","no":773,"kind":"技法","works":["コロタイプの作例を、近接する版画技法と比較する展示・教材","線、階調、紙の関係を実作品の技法記録から検討する出版"],"recipe":{"type":"作品の文字と後から加える説明を分け、技法・作者・年代を画面外へ整理する。","layout":"細部の記録と全体像を並べ、微細構造と見た目の階調を分けて読む。","material":"所蔵館の技法記録と実物の紙・インクを確認し、画面の色だけから材料を決めない。"},"colors":["#E1D5BF","#403B35","#8D8071"],"motif":"print","collection":"Dictionary expansion 51","addedAt":"2026-10-05","reference":{"status":"verified","pageUrl":"https://psap.library.illinois.edu/collection-id-guide/photomechanical","credit":"University of Illinois Library — PSAP: Photomechanical Prints","gallery":[{"imageUrl":"https://commons.wikimedia.org/wiki/Special:FilePath/Animal%20locomotion%20-%2016%20frames%20of%20racehorse%20%22Annie%20G.%22%20galloping%20LCCN2006691786.jpg?width=640","pageUrl":"https://commons.wikimedia.org/wiki/File:Animal%20locomotion%20-%2016%20frames%20of%20racehorse%20%22Annie%20G.%22%20galloping%20LCCN2006691786.jpg","credit":"Eadweard Muybridge, Animal Locomotion: Annie G. galloping, 1887 — collotype, Library of Congress — Wikimedia Commons / Public domain"}]},"en":{"essence":"A photomechanical process that prints ink from a photographically prepared gelatin surface. Fine, irregular reticulation carries detail and smooth-looking tones rather than a regular halftone screen. It has reproduced photographs and artworks; it is unrelated to the collaged matrix of a collagraph.","cues":["Detailed images derived from photographs or originals","Apparently continuous tonal changes","Fine irregular reticulation under magnification","Tone without a regular dot screen"],"avoid":"A screen image may conceal the diagnostic pattern. Use the collection's medium record, and distinguish collotype from collagraph.","works":["Exhibitions and teaching that compare Collotype with neighbouring print techniques","Publications studying lines, tones and paper through documented works"],"recipe":{"type":"Keep lettering in the work separate from added labels; place medium, artist and date outside the image.","layout":"Pair details with the whole image and distinguish the microscopic pattern from overall tone.","material":"Check the collection medium record and the paper and ink; do not infer materials from screen colour alone."}},"links":{"page":"https://indexstyle.org/styles/collotype","json":"https://indexstyle.org/api/styles/collotype","designSpec":"https://indexstyle.org/styles/collotype/design.md","imagePrompt":"https://indexstyle.org/styles/collotype/prompt.txt"},"usage":{"license":"CC-BY-4.0","licenseName":"Creative Commons Attribution 4.0 International","licenseUrl":"https://creativecommons.org/licenses/by/4.0/","attribution":"IndexStyle — https://indexstyle.org","attributionUrl":"https://indexstyle.org","scope":"Original IndexStyle text and structured data. Reference images, quoted works, and third-party material are excluded and retain their own rights."}}