GB401548A - Improvements in photographic toning processes - Google Patents

Improvements in photographic toning processes

Info

Publication number
GB401548A
GB401548A GB5732/33A GB573233A GB401548A GB 401548 A GB401548 A GB 401548A GB 5732/33 A GB5732/33 A GB 5732/33A GB 573233 A GB573233 A GB 573233A GB 401548 A GB401548 A GB 401548A
Authority
GB
United Kingdom
Prior art keywords
bath
treatment
red
toning
acid
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
GB5732/33A
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.)
FRITZ NEUBER
Original Assignee
FRITZ NEUBER
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
Priority to DEM122246D priority Critical patent/DE591443C/en
Application filed by FRITZ NEUBER filed Critical FRITZ NEUBER
Priority to GB5732/33A priority patent/GB401548A/en
Priority to FR751594D priority patent/FR751594A/en
Publication of GB401548A publication Critical patent/GB401548A/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
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/40—Chemically transforming developed images
    • G03C5/46—Toning

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Silver Salt Photography Or Processing Solution Therefor (AREA)

Abstract

401,548. Photographic toning processes. MAYER, and E., BENEDIK, N., (trading as MAYER & BENEDIK, Dr. E.), 111, Obere Donaustrasse, and NEUBER, F., 36, Bergsteigg, both in Vienna. Feb. 24, 1933, No. 5732. [Class 98 (ii).] A toning bath for photographic silver images consists of phosphates or arsenates and molybdates mixed in molecular or non-molecular proportions with the addition of acids, such as hydrochloric, hydrofluoric, thiocyanic or sulphuric acid. The tones produced vary from red through red-violet to blue according to the concentration of the bath and the duration of the treatment. A suitable bath for the process comprises phosphomolybdic acid, thiocyanic acid or potassium thiocyanate and hydrochloric acid. An after-treatment with alkali, e.g. ammonia, converts the red or blue tone into brown, and green tones maybe likewise produced by an after-treatment with sulphides or polysulphides e.g. sodium sulphide. The effect may be intensified by a further treatment in the original toning bath.
GB5732/33A 1932-12-21 1933-02-24 Improvements in photographic toning processes Expired GB401548A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
DEM122246D DE591443C (en) 1932-12-21 1932-12-21 Clay bath for photographic images
GB5732/33A GB401548A (en) 1932-12-21 1933-02-24 Improvements in photographic toning processes
FR751594D FR751594A (en) 1932-12-21 1933-02-27 Toning and coloring bath for photographic images of different kinds, and process for its use

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DEM122246D DE591443C (en) 1932-12-21 1932-12-21 Clay bath for photographic images
GB5732/33A GB401548A (en) 1932-12-21 1933-02-24 Improvements in photographic toning processes
FR751594T 1933-02-27

Publications (1)

Publication Number Publication Date
GB401548A true GB401548A (en) 1933-11-16

Family

ID=7330019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5732/33A Expired GB401548A (en) 1932-12-21 1933-02-24 Improvements in photographic toning processes

Country Status (3)

Country Link
DE (1) DE591443C (en)
FR (1) FR751594A (en)
GB (1) GB401548A (en)

Also Published As

Publication number Publication date
FR751594A (en) 1933-09-05
DE591443C (en) 1934-01-22

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