GB191321958A - Improvements in and relating to Bichromated-colloid Photographic Processes. - Google Patents

Improvements in and relating to Bichromated-colloid Photographic Processes.

Info

Publication number
GB191321958A
GB191321958A GB191321958DA GB191321958A GB 191321958 A GB191321958 A GB 191321958A GB 191321958D A GB191321958D A GB 191321958DA GB 191321958 A GB191321958 A GB 191321958A
Authority
GB
United Kingdom
Prior art keywords
bichromated
pumice
gelatine
stone
sand
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Inventor
Jules Charles Marie Josep Sury
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Application granted granted Critical
Publication of GB191321958A publication Critical patent/GB191321958A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C1/00—Photosensitive materials
    • G03C1/66—Compositions containing chromates as photosensitive substances

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photosensitive Polymer And Photoresist Processing (AREA)
  • Paper (AREA)

Abstract

21,958. Sury, J. C. M. J. Sept. 29. Chromo-gelatine and like processes.-For the bichromated colloid process, a smooth non-porous support is coated with a colloid containing a hard neutral powder such as glass; sand, or pumice-stone, and is sensitized with alkaline bichromate. After exposure, development is effected with hot or cold water until the unexposed gelatine is washed out, and a black or coloured powder, such as powdered pastel mixed with sand or pumice-stone, is applied with a fine brush. In order to render the progress of development more visible, a pigment which can be subsequently eliminated from the print may be included in the emulsion, such as iodide of mercury, which can be eliminated by hypo.
GB191321958D 1913-09-29 1913-09-29 Improvements in and relating to Bichromated-colloid Photographic Processes. Expired GB191321958A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191321958T 1913-09-29

Publications (1)

Publication Number Publication Date
GB191321958A true GB191321958A (en) 1914-08-27

Family

ID=32372582

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191321958D Expired GB191321958A (en) 1913-09-29 1913-09-29 Improvements in and relating to Bichromated-colloid Photographic Processes.

Country Status (2)

Country Link
DE (1) DE288677C (en)
GB (1) GB191321958A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645578A (en) * 1949-01-22 1953-07-14 Harris Seybold Co Lithograph-plate preparation

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2645578A (en) * 1949-01-22 1953-07-14 Harris Seybold Co Lithograph-plate preparation

Also Published As

Publication number Publication date
DE288677C (en)

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