GB191116790A - Improvements in the Production of Multicolour Photogravures. - Google Patents

Improvements in the Production of Multicolour Photogravures.

Info

Publication number
GB191116790A
GB191116790A GB191116790DA GB191116790A GB 191116790 A GB191116790 A GB 191116790A GB 191116790D A GB191116790D A GB 191116790DA GB 191116790 A GB191116790 A GB 191116790A
Authority
GB
United Kingdom
Prior art keywords
printing
prints
under
negatives
obtaining
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
Charles William Saalburg
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 GB191116790A publication Critical patent/GB191116790A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F3/00—Colour separation; Correction of tonal value
    • G03F3/04—Colour separation; Correction of tonal value by photographic means

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Manufacture Or Reproduction Of Printing Formes (AREA)

Abstract

16,790. Saalburg, C. W. July 21. Photo-mechanical printing-surfaces.-Relates to an improvement on the method described in Specification 11,528/10 for obtaining separate printing-surfaces for the component colours. The component negatives are, in accordance with the above-mentioned Specification, mounted endways on a glass plate, and marked for subsequent subdivision with an allowance for a margin. A piece of carbon tissue, cut lengthways, is exposed under a screen and then independently exposed under the negatives simultaneously. According to the present invention, instead of cutting the prints and manipulating them separately under identical conditions, the undivided carbon tissue is first of all washed as a whole before it is divided into separate points for subsequent identical treatment. The division may be effected under the water. The prints are afterwards used as transfer resists for obtaining etched printing- surfaces. Specifications 22,776/09 and 11,527/10 are also referred to.
GB191116790D 1911-07-21 1911-07-21 Improvements in the Production of Multicolour Photogravures. Expired GB191116790A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB191116790T 1911-07-21

Publications (1)

Publication Number Publication Date
GB191116790A true GB191116790A (en) 1912-01-18

Family

ID=32565589

Family Applications (1)

Application Number Title Priority Date Filing Date
GB191116790D Expired GB191116790A (en) 1911-07-21 1911-07-21 Improvements in the Production of Multicolour Photogravures.

Country Status (1)

Country Link
GB (1) GB191116790A (en)

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