US1843822A - Photographic printing process - Google Patents

Photographic printing process Download PDF

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Publication number
US1843822A
US1843822A US204146A US20414627A US1843822A US 1843822 A US1843822 A US 1843822A US 204146 A US204146 A US 204146A US 20414627 A US20414627 A US 20414627A US 1843822 A US1843822 A US 1843822A
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Prior art keywords
printing process
sensitive
layer
rays
photoactive
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Expired - Lifetime
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US204146A
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Kogel Gustav
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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
    • G03C1/00—Photosensitive materials
    • G03C1/72—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705
    • G03C1/73—Photosensitive compositions not covered by the groups G03C1/005 - G03C1/705 containing organic compounds

Definitions

  • the present invention relates to a new photographic printing process, in which on a sensitive layer consisting of a colloid which contains a suitable non-fugitive organic substance situated on a suitable support such as glass, films, paper and the like, a picture is produced by exposing to photoactive rays a sensitive layer and subjecting it to the socalled physical development.
  • the sensitive layer employed in this process consists of a colloid such as gelatin, albumin, casein or colloidion, containing a non-fugitive organic substance adapted to receive energy from impulses transmitted by 5 visible or invisible photoactive rays and, if
  • Such substances are organic compounds of all kinds, such as for example dye-studs and their intermedi ate products, such as amino compounds, hy-
  • droxy compounds ketones and preferably diketo compounds of the anthraquinone series, and also organo-inorganic compounds, such as organic compounds of lead (ada ted in connection with lighting with X-raysg.
  • the physical development may be executed in a known manner, as for example by treating the layer with a metal salt, such as a silver or mercury salt, in the presence of a reducing agent.
  • a metal salt such as a silver or mercury salt
  • the metal. salt preferably is applied by impregnating the exposed layer with agnetal salt solution; in special cases the metal salt may be present in the photographic material before exposure.
  • paper covered with a gelatin layer containing an anthraquinone derivative, such as a sulfonic acid, compound of anthraquinone, e. g, 2.7-disulfonie aeid derivative of anthraquinone, is exposed under a photographic negative, a weakly visible picture bein"; form-ed. Then it is immersed for a short time in a solution of'silver nitrate of 1 per cent. strength. Then follow a short treatment with 1-methylamino-4-hydroxy benzene developer acidified by acetic acid, a
  • a so produced picture may be further treated as usual in photography, that is to say it may be toned, bleached, tanned (for the bronie oil process) and then treated with watery or fatty ink.
  • the process which comprises subjecting a gelatin layer containing a sensitive nonfugitive organic substance to a printing process with photoactive rays and physically developing said layer.
  • the process which comprises subjecting a gelatin layer containing a sensitive nonfugitive substance derived from a hydrocarbon'to a printing process with photoactive rays and physically developing said layer.
  • the process which comprises subjecting a protein layer containing a sensitive keto compound of the anthracene series to a printing process with photoactive rays and physically developing said layer.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Description

Patented Feb. 2, 1932 UNITED STATES PATENT OFFICE GUSTAV KGGEL, OF KARLSRUHE, GERMANY -No Drawing. Application filed July 7, 1927, Serial No. 204,146, and in Germany July 7, 1926.
The present invention relates to a new photographic printing process, in which on a sensitive layer consisting of a colloid which contains a suitable non-fugitive organic substance situated on a suitable support such as glass, films, paper and the like, a picture is produced by exposing to photoactive rays a sensitive layer and subjecting it to the socalled physical development.
The sensitive layer employed in this process consists of a colloid such as gelatin, albumin, casein or colloidion, containing a non-fugitive organic substance adapted to receive energy from impulses transmitted by 5 visible or invisible photoactive rays and, if
colored, capable of being washed away easily by the further treatment. Such substances are organic compounds of all kinds, such as for example dye-studs and their intermedi ate products, such as amino compounds, hy-
droxy compounds, ketones and preferably diketo compounds of the anthraquinone series, and also organo-inorganic compounds, such as organic compounds of lead (ada ted in connection with lighting with X-raysg.
The physical development may be executed in a known manner, as for example by treating the layer with a metal salt, such as a silver or mercury salt, in the presence of a reducing agent. The metal. salt preferably is applied by impregnating the exposed layer with agnetal salt solution; in special cases the metal salt may be present in the photographic material before exposure.
For example, paper covered with a gelatin layer containing an anthraquinone derivative, such as a sulfonic acid, compound of anthraquinone, e. g, 2.7-disulfonie aeid derivative of anthraquinone, is exposed under a photographic negative, a weakly visible picture bein"; form-ed. Then it is immersed for a short time in a solution of'silver nitrate of 1 per cent. strength. Then follow a short treatment with 1-methylamino-4-hydroxy benzene developer acidified by acetic acid, a
short treatment with a solution of sodium thiosulfate, washing and drying.
A so produced picture may be further treated as usual in photography, that is to say it may be toned, bleached, tanned (for the bronie oil process) and then treated with watery or fatty ink.
In the claims the term sensitive is in tended to define compounds which are suitable to receive. energy from impulses by photoactive rays.
What I claim is:
l. The process which comprises subjecting a gelatin layer containing a sensitive nonfugitive organic substance to a printing process with photoactive rays and physically developing said layer.
The process which comprises subjecting a gelatin layer containing a sensitive nonfugitive substance derived from a hydrocarbon'to a printing process with photoactive rays and physically developing said layer.
3. The process which comprises subjecting f a gelatin layer containing a sensitive nonfugitive substance-derived from a hydrocarbon substituted by oxygen to a printing process with photoactive rays and physically developing said layer.
4. The process which comprises subjecting a protein layer containing a sensitive keto compound to a printing process with photo- 'active rays and physically developing said layer.
5. The process which comprises subjecting a protein layer containing a sensitive keto compound of the anthracene series to a printing process with photoactive rays and physically developing said layer.
6. The process which comprises subjecting a protein layer containing a sensitive compound of the anthraquinone series to a printing process with photoactive rays and physically developing said layer. 7. The process which, comprises subjecting a protein layer containing a sensitive sulfonated compound of the anthraquinone series to a printing process with photoactive rays and physically developing said layer.
8. The process which comprises subjecting a protein layer containing a sensitive disulfonic acid of the anthraquinone series to a printing process with photoactive rays and physically developing said layer.
9. The process which comprises subjecting a sensitive gelatin layer containing a sensitive disulfonic acid of the anthraquinone series to a printing process with photoactive v rays and physically developing said layer.
10. The process which comprises subject ing a sensitive gelatin layer containing 2.7 anthraquinone disulfonic acid, to a printing process with photoactive rays and physically developing said layer.
In testimony whereof, I afiix my signature.
GUSTAV KGGEL.
US204146A 1926-07-07 1927-07-07 Photographic printing process Expired - Lifetime US1843822A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEK99824A DE467089C (en) 1926-07-07 1926-07-07 Process for the production of photographs

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US1843822A true US1843822A (en) 1932-02-02

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US204146A Expired - Lifetime US1843822A (en) 1926-07-07 1927-07-07 Photographic printing process

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DE (1) DE467089C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504593A (en) * 1946-05-18 1950-04-18 Gen Aniline & Film Corp Light-sensitive anthraquinone sulfonic acid photoprinting material containing a cupric salt
US2952538A (en) * 1950-07-25 1960-09-13 Philips Corp Photographic process

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2504593A (en) * 1946-05-18 1950-04-18 Gen Aniline & Film Corp Light-sensitive anthraquinone sulfonic acid photoprinting material containing a cupric salt
US2952538A (en) * 1950-07-25 1960-09-13 Philips Corp Photographic process

Also Published As

Publication number Publication date
DE467089C (en) 1928-10-17

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