GB312261A - A process and apparatus for developing positive diazo prints - Google Patents

A process and apparatus for developing positive diazo prints

Info

Publication number
GB312261A
GB312261A GB23227/28A GB2322728A GB312261A GB 312261 A GB312261 A GB 312261A GB 23227/28 A GB23227/28 A GB 23227/28A GB 2322728 A GB2322728 A GB 2322728A GB 312261 A GB312261 A GB 312261A
Authority
GB
United Kingdom
Prior art keywords
prints
pad
developer
developing
over
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
GB23227/28A
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
Publication of GB312261A publication Critical patent/GB312261A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D5/00—Liquid processing apparatus in which no immersion is effected; Washing apparatus in which no immersion is effected
    • G03D5/06—Applicator pads, rollers or strips
    • G03D5/065—Pads

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)

Abstract

312,261. Grinten, F. van der. May 23, 1928, [Convention date]. Void [Published under Sect. 91 of the Acts]. Addition to 295,993. Developing apparatus; diazotype processes. - A liquid alkaline developer is applied in a very thin uniform layer simultaneously over the whole width of the image to be developed by moving the prints over a stationary pad of absorptive material soaked in the developing liquid. The prints q may, for example be drawn between a pressure bar u and a long pad i of felt or flannel resting in a trough k supplied with developer through a sunken channel k<1>, ledges m being provided to wipe surplus liquid from the prints as they emerge. Alternatively, the prints may be drawn upwards over a pad resting on a support of quadrantal section, the lower edge of the pad dipping into a trough of the developer. Examples of diazotype developing processes, similar to those described in the parent Specification, which may be carried out according to the invention, are described in the Specification..
GB23227/28A 1928-05-23 1928-08-11 A process and apparatus for developing positive diazo prints Expired GB312261A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL312261X 1928-05-23

Publications (1)

Publication Number Publication Date
GB312261A true GB312261A (en) 1929-05-22

Family

ID=19783665

Family Applications (1)

Application Number Title Priority Date Filing Date
GB23227/28A Expired GB312261A (en) 1928-05-23 1928-08-11 A process and apparatus for developing positive diazo prints

Country Status (1)

Country Link
GB (1) GB312261A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789904A (en) * 1953-09-17 1957-04-23 Gen Aniline & Film Corp Diazo print process
DE1254459B (en) * 1957-06-13 1967-11-16 Ozalid Co Ltd Diazotype material

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2789904A (en) * 1953-09-17 1957-04-23 Gen Aniline & Film Corp Diazo print process
DE1254459B (en) * 1957-06-13 1967-11-16 Ozalid Co Ltd Diazotype material

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