GB1023601A - Photocopying machines - Google Patents

Photocopying machines

Info

Publication number
GB1023601A
GB1023601A GB25414/63A GB2541463A GB1023601A GB 1023601 A GB1023601 A GB 1023601A GB 25414/63 A GB25414/63 A GB 25414/63A GB 2541463 A GB2541463 A GB 2541463A GB 1023601 A GB1023601 A GB 1023601A
Authority
GB
United Kingdom
Prior art keywords
bands
cylinder
exposure
areas
june
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
GB25414/63A
Inventor
Robert Edward Charles Bishop
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.)
LAWES BROS Ltd
Original Assignee
LAWES BROS 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 LAWES BROS Ltd filed Critical LAWES BROS Ltd
Priority to GB25414/63A priority Critical patent/GB1023601A/en
Priority to US376976A priority patent/US3329076A/en
Priority to NL6407291A priority patent/NL6407291A/xx
Publication of GB1023601A publication Critical patent/GB1023601A/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
    • G03C5/08Photoprinting; Processes and means for preventing photoprinting
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00Photographic printing apparatus
    • G03B27/02Exposure apparatus for contact printing
    • G03B27/14Details
    • G03B27/16Illumination arrangements, e.g. positioning of lamps, positioning of reflectors
    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03BAPPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B27/00Photographic printing apparatus
    • G03B27/02Exposure apparatus for contact printing
    • G03B27/14Details
    • G03B27/18Maintaining or producing contact pressure between original and light-sensitive material
    • G03B27/22Maintaining or producing contact pressure between original and light-sensitive material by stretching over a curved surface

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Non-Silver Salt Photosensitive Materials And Non-Silver Salt Photography (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Delivering By Means Of Belts And Rollers (AREA)

Abstract

1,023,601. Photocopying apparatus. LAWES BROS Ltd. June 23, 1964 [June 26, 1963], No. 25414/63. Heading G2A. In a photocopying machine in which the original and copy sheet are conveyed together in contact round a translucent cylinder 1 housing a light source 2 by a number of separate endless bands 7 spaced along the length of the cylinder, the areas of the copy sheet registering with the bands is given a different degree of exposure from those areas registering with the spaces between the bands. As shown, this is effected by a comb plate 5 fixed to an air-duct 4 which is located within the cylinder 1, and which also carries a reflector 3. The comb plate has a castellated edge with cutaway'slots 6 corresponding to the spaces between the bands 7. Thus as the sheets are carried round the exposure cylinder, those areas passing below the slots 6 will receive more exposure than the remaining areas. It is stated that this differential exposure tends to eliminate the streakiness sometimes obtained with separate conveyor belts.
GB25414/63A 1963-06-26 1963-06-26 Photocopying machines Expired GB1023601A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
GB25414/63A GB1023601A (en) 1963-06-26 1963-06-26 Photocopying machines
US376976A US3329076A (en) 1963-06-26 1964-06-22 Photocopying machines
NL6407291A NL6407291A (en) 1963-06-26 1964-06-26

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB25414/63A GB1023601A (en) 1963-06-26 1963-06-26 Photocopying machines

Publications (1)

Publication Number Publication Date
GB1023601A true GB1023601A (en) 1966-03-23

Family

ID=10227294

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25414/63A Expired GB1023601A (en) 1963-06-26 1963-06-26 Photocopying machines

Country Status (3)

Country Link
US (1) US3329076A (en)
GB (1) GB1023601A (en)
NL (1) NL6407291A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL6510002A (en) * 1965-08-02 1967-02-03
US3482918A (en) * 1967-10-04 1969-12-09 Gaf Corp Exposure assembly for light sensitive diazo-type copy paper
US3993124A (en) * 1971-12-30 1976-11-23 Xerox Corporation Method and apparatus for fuser assembly cooling in an electrostatographic machine

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2895395A (en) * 1955-04-16 1959-07-21 Engelhard Ind Inc Conveyor device for photo-printing material in photo-printing machines

Also Published As

Publication number Publication date
NL6407291A (en) 1964-12-28
US3329076A (en) 1967-07-04

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