GB762632A - Improvements in or relating to apparatus for photographic development by means of agas - Google Patents

Improvements in or relating to apparatus for photographic development by means of agas

Info

Publication number
GB762632A
GB762632A GB2203454A GB2203454A GB762632A GB 762632 A GB762632 A GB 762632A GB 2203454 A GB2203454 A GB 2203454A GB 2203454 A GB2203454 A GB 2203454A GB 762632 A GB762632 A GB 762632A
Authority
GB
United Kingdom
Prior art keywords
chamber
gas
plates
layers
sensitized
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
GB2203454A
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.)
EN Mason and Sons Ltd
Original Assignee
EN Mason and Sons Ltd
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 EN Mason and Sons Ltd filed Critical EN Mason and Sons Ltd
Priority to GB2203454A priority Critical patent/GB762632A/en
Publication of GB762632A publication Critical patent/GB762632A/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
    • G03D7/00—Gas processing apparatus

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)

Abstract

762,632. Photographic gas-development apparatus. MASON & SONS., Ltd., E. N. and MOSS, J W. Julv 26, 1955 [July 28, 1954], No. 22034/54. Class 98(2) In photographic gas-development apparatus of the kind wherein the gas (ammonia), after evaporation from an aqueous solution in a closed chamber, is caused to contact the sensitized layers by means of a perforated plate, over which the layers are conveyed by a travelling band covering all the perforations and sealing the chamber, the top of the chamber is bridged by inclined plates at right angles to the direction of travel of the sensitized layers and so arranged as to give a Venetian blind effect to obtain even development in a much shorter length of travel. As shown, the chamber 1 is divided into two superimposed compartments 2, 3 by the partition 4, an aqueous solution of ammonia being evaporated at one end of the compartments and being circulated by the fan 5 through the upper compaitment 2 and returned along the lower compartment 3. The open top of the chamber 1 is bridged by the plates 6 arranged to leave gaps through which the gas passes to contact the sensitized sheets conveyed over the top of the chamber 1 by the endless band 8. The plates 6 are interconnected to allow the width of the gaps to be adjusted. In a modification, the partition 4 is roof-shaped and the inclined plates are held in position by struts. The circulating system may be omitted.
GB2203454A 1954-07-28 1954-07-28 Improvements in or relating to apparatus for photographic development by means of agas Expired GB762632A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2203454A GB762632A (en) 1954-07-28 1954-07-28 Improvements in or relating to apparatus for photographic development by means of agas

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2203454A GB762632A (en) 1954-07-28 1954-07-28 Improvements in or relating to apparatus for photographic development by means of agas

Publications (1)

Publication Number Publication Date
GB762632A true GB762632A (en) 1956-11-28

Family

ID=10172841

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2203454A Expired GB762632A (en) 1954-07-28 1954-07-28 Improvements in or relating to apparatus for photographic development by means of agas

Country Status (1)

Country Link
GB (1) GB762632A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006799A1 (en) * 1978-06-23 1980-01-09 Rhone-Poulenc Systemes Process and device to improve the developing speed in a diazocopy apparatus

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0006799A1 (en) * 1978-06-23 1980-01-09 Rhone-Poulenc Systemes Process and device to improve the developing speed in a diazocopy apparatus
FR2429453A1 (en) * 1978-06-23 1980-01-18 Cellophane Sa METHOD FOR IMPROVING THE DEVELOPMENT SPEED IN DIAZOCOPY MACHINES AND DEVICE FOR IMPLEMENTING THE SAID METHOD
US4289394A (en) * 1978-06-23 1981-09-15 Rhone-Poulenc Systemes Process and apparatus for converging developing vapors in diazocopy machines

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