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
  • G03C11/00—Auxiliary processes in photography
  • G03C11/14—Pasting; Mounting
• • 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
  • G03C11/00—Auxiliary processes in photography
  • G03C11/08—Varnishing, e.g. application of protective layers on finished photographic prints

Definitions

• the blue-green and yellow images are normally developed first, this being effected in dark environment and at low temperatures.
• the final development of the red image is often carried out at high temperatures (SO-100 C.), and the gelatine must therefore be hardened by adding, e.g. formalin to prevent the surface of the photograph from adhering to the surfaces of the developing apparatus.
• the photograph Even if lower temperatures are used when developing the red image, the photograph must nevertheless be dried at high temperatures, and the gelatine must therefore be hardened to prevent it from sticking to the surface of the drying apparatus.
• the surface of the photograph is glossed to a certain extent in connection therewith.
• the red image need not to be developed in the dark.
• the gelatine being partially pressed into the paper by the pressure exerted by the drying rollers or the pressure means and hardened in this state.
• the image is not affected hereby and is fully visible when viewed against the light.
• the plastics material will not adhere to the gelatine surface of the visible photograph, but will adhere to the paper covering the hidden photograph.
• the layer of plastics material will be connected with the hidden photograph (which as aforementioned is normally identical to the visible photograph), and hence it is impossible to separate the hidden photograph from the plastics material without destroying the identity papers.
• EXAMPLE For making identity cards a series of colored photographs were copied in a conventional manner on a web of photographic copying paper for color photography (type Agfa MCM 111) to form a series of pairs of copies on the web each comprising two identical photographs of the same person disposed beside each other.
• the paper web was developed in a conventional developing machine type Pako Processor, wherein the copying paper web is passed through a series of developing baths (operating at room temperature and in the dark) and rinsing baths of compositions suitable for the copying paper, as recommended by the manufacturer thereof, to develop the bluegreen and yellow colors and then over a heated drum (about C.) to develop the red (magenta) color and to dry the paper the copying paper passing through a stabilizing bath containing about 3% formaldehyde before being passed to the heated drum.
• the copying paper after passing through the stabilizing bath and while gelatine surface was still soft and tacky, was removed from the developing machine and a piece of paper containing printed information corresponding to each individual was applied over each pair of partly developed copies on the web so as to cover one of the copies in such pair.
• the web with the applied papers was then passed over the heated drum where it was subjected to about 190 F. for about 5 minutes.
• the red color was developed and at the same time the previously formaldehyde-treated gelatine was hardened and each applied paper piece permanently bonded to the hardened gelatine in the photographic surface to which it had been applied.
• the paper web was dried.
• the web was then cut transversely to separate it into individual cards each comprising a pair of identical colored photographs one of which was covered by said printed piece of paper.
• Each card was placed between two sheets of plastic slightly larger than the card and the assembly subjected to heat (about 285 F.) and pressure (about 40,000 p.s.i. for about 55 seconds in a conventional laminating press to bond the plastic sheets to the .paper surfaces and to each other around the card. This treatment also slightly strengthened the red color of the prints and weakened the blue color.
• References Cited 1 A method of bonding a gelatine coated -tri-colored UNITEDSTATESPATENTS photographic copying material to a cover paper comprising applying the cover paper to the photographic 3,608,465 9/ 1971 Chlng 9550 P L copying material subse uent to the development of the yellow and blue-green ini ages on the photographic copying 5 RONALD SMITH Pnmary Exammer material but prior to the completion of the development R, L, SCHILLING, A i t E i of the red image and at which time the gelatine is tacky and heating the combined paper and material to complete US. Cl. X.R.

Landscapes

• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Silver Salt Photography Or Processing Solution Therefor (AREA)
• Printing Methods (AREA)
• Credit Cards Or The Like (AREA)
• Color Printing (AREA)

Applications Claiming Priority (1)

Publications (1)

Family

ID=20264733

Family Applications (1)

Country Status (9)

Families Citing this family (1)

• 1971
  • 1971-04-08 SE SE04681/71A patent/SE351056B/xx unknown
• 1972
  • 1972-03-29 CH CH465272A patent/CH576159A5/xx not_active IP Right Cessation
  • 1972-04-04 US US00241060A patent/US3806341A/en not_active Expired - Lifetime
  • 1972-04-05 DE DE19722216456 patent/DE2216456A1/de not_active Withdrawn
  • 1972-04-05 BE BE781689A patent/BE781689A/xx unknown
  • 1972-04-06 NL NL7204625A patent/NL7204625A/xx not_active Application Discontinuation
  • 1972-04-06 IL IL39152A patent/IL39152A/en unknown
  • 1972-04-06 FR FR7212110A patent/FR2132718B1/fr not_active Expired
  • 1972-04-06 IT IT89566/72A patent/IT967051B/it active

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