GB256224A - A process of, and products for, the toning of photographic proofs - Google Patents

A process of, and products for, the toning of photographic proofs

Info

Publication number
GB256224A
GB256224A GB18465/26A GB1846526A GB256224A GB 256224 A GB256224 A GB 256224A GB 18465/26 A GB18465/26 A GB 18465/26A GB 1846526 A GB1846526 A GB 1846526A GB 256224 A GB256224 A GB 256224A
Authority
GB
United Kingdom
Prior art keywords
hyposulphite
toning
solution
silver
iron
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
GB18465/26A
Other languages
English (en)
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
Priority claimed from DED48513D external-priority patent/DE436960C/de
Application filed by Individual filed Critical Individual
Publication of GB256224A publication Critical patent/GB256224A/en
Expired legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03CPHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26Processes using silver-salt-containing photosensitive materials or agents therefor
    • G03C5/40Chemically transforming developed images
    • G03C5/46Toning

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Printing Plates And Materials Therefor (AREA)
GB18465/26A 1925-07-31 1926-07-23 A process of, and products for, the toning of photographic proofs Expired GB256224A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR601443X 1925-07-31
DED48513D DE436960C (de) 1925-08-08 1925-08-08 Verfahren zum Tonen photographischer Auskopierpapiere

Publications (1)

Publication Number Publication Date
GB256224A true GB256224A (en) 1927-09-01

Family

ID=31947527

Family Applications (1)

Application Number Title Priority Date Filing Date
GB18465/26A Expired GB256224A (en) 1925-07-31 1926-07-23 A process of, and products for, the toning of photographic proofs

Country Status (3)

Country Link
BE (1) BE335763A (enrdf_load_stackoverflow)
FR (1) FR601443A (enrdf_load_stackoverflow)
GB (1) GB256224A (enrdf_load_stackoverflow)

Also Published As

Publication number Publication date
BE335763A (enrdf_load_stackoverflow)
FR601443A (fr) 1926-03-02

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