US1683560A - Process for the production of photographic plates, films, and the like for indirect three-color photography - Google Patents

Process for the production of photographic plates, films, and the like for indirect three-color photography Download PDF

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Publication number
US1683560A
US1683560A US94595A US9459526A US1683560A US 1683560 A US1683560 A US 1683560A US 94595 A US94595 A US 94595A US 9459526 A US9459526 A US 9459526A US 1683560 A US1683560 A US 1683560A
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United States
Prior art keywords
film
films
indirect
production
emulsion
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Expired - Lifetime
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US94595A
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English (en)
Inventor
Lage Ernst August
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Individual
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Individual
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    • 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
    • G03C7/00—Multicolour photographic processes or agents therefor; Regeneration of such processing agents; Photosensitive materials for multicolour processes
    • G03C7/20—Subtractive colour processes using differently sensitised films, each coated on its own base, e.g. bipacks, tripacks

Definitions

  • the invention relates to a process for the production of photographic plates, films and thelike for indirect three-color photography.
  • the invention consists principally in squeegeeing a light-sensitive film which is provided with a suitable coating of .emulslon for the red partial image on to a support provided with a suitable coating ot emulsion for the blue partial image and then pouring a l0 suitable coating of emulsion for the yellow partial image on to the film which has been squeegeed on to the support,
  • the said film together with thecoating of emulsion which has been poured on can be strip d of! from the said support, after which t e two se arat'ed parts can be individually develo whereupon, after the film which has been stripped of has dried, the one or the other or both of the negatives can be separated from the film.
  • Figure 1 is an elevation and Figure 2 a side view of the means for pressing the films upon-the plate.
  • Fi re 3 is a sectional view through a plate with the layers in sitionthereon.
  • Fi 4 is a view slmilar to Figure 3, showmg the layers partly separated.
  • a iilm d, one side of which is coated with light-sensitive emulsion c and which, after the photographic exposure, is to provide the red partial image is squeegeed in such a -manner on to a lphotographical support a (dry plate, film or the like) coated-with an emulsion b which is to provide the blue part picture that the surface of the one emulsion coat-- ing c rests upon the surface of the other emulsion coating b and is in optical contact with the latter.
  • the film d, together with the plate a are pressed against one another b y one or more spring-actuated or yielding rubber rollers or the like which express the air between the layers band o which are to be -brought together.
  • rollers f, f are movable and rotatably mounted in th; lstandards e o' tbrou hblocks ,g rings eing proto iglormally gforfiespthe. rollers apart and screws iY providing an adjustment for obtaining the necessary pressure to the rolllers on the lilms passing therethrough, and beingforced into intimate contact.
  • han- .55 dle lc mounted on one side at the extended ends of the lower rollershaft, provides the ,means for rotating the rollers and feeding the films b and c that are to be pressed together through the machine.
  • both parts are developed so that the glass plate, film or the likel after drying is at once suitable for providing the blue partial image, whilst, after the dryingo of the developed film, the coating of emulsion which was poured on is stripped o so that the film now forms the negative for the red partial image and the drawn-oil? coating the negative for the yellow partial image.
  • the red partial negative may be stripped off or, if desired, both partial negatives mayy be stripped off. In the last named case the somewhat faulty transparency to light of the support for the coatings is thus overcome.
  • lrProcess for the productiony of photographic tri-packs for indirect three-color photography consisting in that a light-sensitive film provided with the coating of emulsionsuitable for1 they red partial image is 105 squeegeed on to a support provided with a coating of emulsion suitable for the blue partial image, after which a suitable coating of emulsion for the yellow artial image is poured on to the squeegeed m.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
US94595A 1925-10-23 1926-03-13 Process for the production of photographic plates, films, and the like for indirect three-color photography Expired - Lifetime US1683560A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL0064394 1925-10-23

Publications (1)

Publication Number Publication Date
US1683560A true US1683560A (en) 1928-09-04

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ID=7281072

Family Applications (1)

Application Number Title Priority Date Filing Date
US94595A Expired - Lifetime US1683560A (en) 1925-10-23 1926-03-13 Process for the production of photographic plates, films, and the like for indirect three-color photography

Country Status (3)

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US (1) US1683560A (xx)
BE (1) BE337507A (xx)
FR (1) FR623288A (xx)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679456A (en) * 1950-02-09 1954-05-25 Hans Von Fraunhofer Color photography
US2962374A (en) * 1956-05-01 1960-11-29 Haloid Xerox Inc Color xerography

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2679456A (en) * 1950-02-09 1954-05-25 Hans Von Fraunhofer Color photography
US2962374A (en) * 1956-05-01 1960-11-29 Haloid Xerox Inc Color xerography

Also Published As

Publication number Publication date
BE337507A (xx)
FR623288A (fr) 1927-06-21

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