GB571174A - Improvements in or relating to the production of photographic light-sensitive emulsions - Google Patents

Improvements in or relating to the production of photographic light-sensitive emulsions

Info

Publication number
GB571174A
GB571174A GB1962/44A GB196244A GB571174A GB 571174 A GB571174 A GB 571174A GB 1962/44 A GB1962/44 A GB 1962/44A GB 196244 A GB196244 A GB 196244A GB 571174 A GB571174 A GB 571174A
Authority
GB
United Kingdom
Prior art keywords
methyl ester
acetyl
carbethoxydithiocarbazinic
methyldithiocarbazinate
relating
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
GB1962/44A
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
Priority to GB1962/44A priority Critical patent/GB571174A/en
Priority to US568066A priority patent/US2423767A/en
Publication of GB571174A publication Critical patent/GB571174A/en
Expired legal-status Critical Current

Links

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
    • G03C1/005—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein
    • G03C1/06—Silver halide emulsions; Preparation thereof; Physical treatment thereof; Incorporation of additives therein with non-macromolecular additives
    • G03C1/35—Antiplumming agents, i.e. antibronzing agents; Toners
    • 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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/29—Development processes or agents therefor
    • G03C5/305—Additives other than developers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/162—Protective or antiabrasion layer
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S430/00—Radiation imagery chemistry: process, composition, or product thereof
    • Y10S430/166—Toner containing

Landscapes

  • Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Abstract

The colour of the developed image in a silver halide emulsion is improved by applying to the emulsion a compound of the formula R1-CO-NH-NH-CS-R2, where R1 is H or a substituent group and R2 is NH2, substituted amino, hydrocarbon-oxy, or hydrocarbon-thiol. Compounds specified are acetylthiosemicarbazide, formyl - 4 - ethylthiosemicarbazide, 1 - carbaminylthiosemicarbazide, benzoyldithiocarbazinic acid methyl ester, acetyl-4 : 4 - diethylthiosemicarbazide, carbethoxydithiocarbazinic acid methyl ester and acetyldithiocarbazinic acid benzyl ester, which is prepared from benzyldithiocarbazinate and acetic anhydride or acetyl chloride. Acetyl-, propionyl-butyryl, furoyl- and cyclohexylcarbonyldithiocarbazinic methyl ester which are also mentioned are prepared from methyldithiocarbazinate and the appropriate acid chloride or anhydride in pyridine. Carbethoxydithiocarbazinic methyl ester is obtained from methyldithiocarbazinate and ethylchlorformate.
GB1962/44A 1944-02-03 1944-02-03 Improvements in or relating to the production of photographic light-sensitive emulsions Expired GB571174A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB1962/44A GB571174A (en) 1944-02-03 1944-02-03 Improvements in or relating to the production of photographic light-sensitive emulsions
US568066A US2423767A (en) 1944-02-03 1944-12-13 Tone-control agents for silver halide emulsions

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1962/44A GB571174A (en) 1944-02-03 1944-02-03 Improvements in or relating to the production of photographic light-sensitive emulsions

Publications (1)

Publication Number Publication Date
GB571174A true GB571174A (en) 1945-08-09

Family

ID=9731112

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1962/44A Expired GB571174A (en) 1944-02-03 1944-02-03 Improvements in or relating to the production of photographic light-sensitive emulsions

Country Status (2)

Country Link
US (1) US2423767A (en)
GB (1) GB571174A (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB583648A (en) * 1944-11-13 1946-12-23 John David Kendall Improvements in photographic materials
US2739893A (en) * 1954-06-29 1956-03-27 Levy Marilyn Photothermographic substances
GB888543A (en) * 1959-10-16 1962-01-31 Kodak Ltd Improvements in processes of photographic reproduction
US4134914A (en) * 1975-08-25 1979-01-16 Eli Lilly And Company 1-Acyl-4-substituted phenyl thiosemicarbazides

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US394290A (en) * 1888-12-11 pardee
US1623499A (en) * 1925-06-16 1927-04-05 A corpora
BE403307A (en) * 1933-05-24
US2266442A (en) * 1937-04-10 1941-12-16 Eastman Kodak Co Color print by multiple color development
BE436252A (en) * 1938-09-02
GB533568A (en) * 1939-06-16 1941-02-17 Karl Schinzel Improvements in and relating to colour photography
IT384872A (en) * 1939-07-14
BE475247A (en) * 1940-10-15
FR956678A (en) * 1941-09-23 1950-02-02
FR956701A (en) * 1941-11-13 1950-02-06

Also Published As

Publication number Publication date
US2423767A (en) 1947-07-08

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