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
  • G03C1/72—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

• paper or paper which is coated with a gelatin layer, glass or celluloid film, is made sensitive to light by application of a solution of a salt of a sulfonic acid of a 1.2-quinone of the naphthalene series and is exposed, for instance, under a drawing on tracing cloth and then developed with an organic compound which contains one or more amino-groups, whereby a positive picture is produced directly.
• E wample- 2.Paper is coated with a solution of gelatin which contains potassium 1.2- naphtho-quinone-4-sulfonate. After drying and exposure to light un der a black and white drawing it is developed in an aqueous solution of 1-methyl-24-diaminobenzene of 1 per cent. strength. The picture is in Bordeaux red.
• Example 3 A gelatin solution containing potassium 1.2-naphtho-quinonel-sulfonate is poured upon glass. After drying and exposure to light under a black and white drawing the plate is developed by a solution of 1 amino 4- hydroxybenzene. The picture produced is violet.
• potassium 1.2-naphtho-quinone- 4-sulfonate there may be employed in the preceding examples salts of other sulfonic acids of a 1.2-quinone of the naphthalene series, for instance, ammonium 1.2-naphtho-quinone-4.6-disulfonate or sodium 1.2-naphthoquinone-G-sulfonate.
• prints which consists inexposing to light behind a positive a support coated with a salt of 1.2-naphthoquinonel-sulfonic acid and developing the exposed light-sensitive surface with an organic compound containing an amino group.
• Light-sensitive materials com rising a support coated with a salt of a sul onic acid of a 1.2-quinone of the naphthalene'series.
• Light-sensitive materials comprising a support coated with a salt of 1.2-naphthoquinone--sulfonic acid.

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• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Materials Engineering (AREA)
• Physics & Mathematics (AREA)
• General Physics & Mathematics (AREA)
• Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
• Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
• Indole Compounds (AREA)

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Publications (1)

Family

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Family Applications (1)

Country Status (3)

Cited By (1)

• 1928
  • 1928-02-11 FR FR648659D patent/FR648659A/fr not_active Expired
  • 1928-02-24 US US256810A patent/US1830854A/en not_active Expired - Lifetime
  • 1928-02-28 GB GB6229/28A patent/GB286233A/en not_active Expired

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