GB1079231A - Improvements in or relating to photographic reproducing apparatus - Google Patents

Improvements in or relating to photographic reproducing apparatus

Info

Publication number
GB1079231A
GB1079231A GB4040863A GB4040863A GB1079231A GB 1079231 A GB1079231 A GB 1079231A GB 4040863 A GB4040863 A GB 4040863A GB 4040863 A GB4040863 A GB 4040863A GB 1079231 A GB1079231 A GB 1079231A
Authority
GB
United Kingdom
Prior art keywords
lens system
mask
sheet
lamp
arm
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
GB4040863A
Inventor
Bernard Kirsen
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.)
Hall Harding Ltd
Original Assignee
Hall Harding 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 Hall Harding Ltd filed Critical Hall Harding Ltd
Priority to GB4040863A priority Critical patent/GB1079231A/en
Publication of GB1079231A publication Critical patent/GB1079231A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS 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
    • G03B27/00—Photographic printing apparatus
    • G03B27/32—Projection printing apparatus, e.g. enlarger, copying camera
    • G03B27/52—Details
    • G03B27/522—Projection optics
    • G03B27/525—Projection optics for slit exposure
    • G03B27/526—Projection optics for slit exposure in which the projection optics move

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)

Abstract

1,079,231. Photographic reproducing apparatus. HALL HARDING Ltd. Jan. 13, 1965 [Oct. 14, 1963], No.40408/63. Heading G2A. An original is placed face down on a stationary glass sheet 2 and a mercury vapour lamp 58 or a linear tungsten filament lamp traversed to and fro across the apparatus under the sheet 2, the lamp having reflectors 16, 18 of elliptical cross-section on either side of it, the reflectors being arranged to define a gap 20 between them through which gap light is focused in a narrow strip on to the original. A mask 21 having an aperture 21<SP>1</SP> is mounted for movement in line with the gap 20 and the centre of a lens system 6, so that light from the illuminated strip of the original passes through the mask and lens system, and is reflected by a mirror 8 on to a sheet of copy material 10 on a stationary glass sheet 12. In another embodiment Fig. 2 (not shown) the sheet (2) is curved and the strip illuminating assembly includes a carriage which runs on curved tracks, an arm (28) pivoted in line with the optical centre of the lens system and being pivoted also to the carriage carries the mask (21) and is actuated by an arm (36) at constant speed to obtain an even exposure. In other embodiments, two lights may be provided Fig. 3 (not shown), or two masks Fig. 4 (not shown). To obtain an even exposure, the carriage speed may be varied, or the emission of the lamp varied, or the mask may be waisted Fig.6 (not shown) and the exposure time increased where the light is less intense. The lens system (6) may be carried on the arm (28) Fig. 7 (not shown), or a concave mirror (90) Fig. 8 (not shown) may be used instead of the lens system 6 and mirror 8.
GB4040863A 1963-10-14 1963-10-14 Improvements in or relating to photographic reproducing apparatus Expired GB1079231A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB4040863A GB1079231A (en) 1963-10-14 1963-10-14 Improvements in or relating to photographic reproducing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB4040863A GB1079231A (en) 1963-10-14 1963-10-14 Improvements in or relating to photographic reproducing apparatus

Publications (1)

Publication Number Publication Date
GB1079231A true GB1079231A (en) 1967-08-16

Family

ID=10414754

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4040863A Expired GB1079231A (en) 1963-10-14 1963-10-14 Improvements in or relating to photographic reproducing apparatus

Country Status (1)

Country Link
GB (1) GB1079231A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612679A (en) * 1969-05-02 1971-10-12 Xerox Corp Scanning apparatus
FR2297443A1 (en) * 1975-01-13 1976-08-06 Minolta Camera Kk Illuminated slit type electro photographic copier deive - has light through put slit with control device and tapered shape specially designed for optimum performance
US4086010A (en) * 1976-11-01 1978-04-25 Xerox Corporation Illumination system utilizing two opposing DC lamps with an optimum barrel-shaped slit
US4194835A (en) * 1977-09-27 1980-03-25 Tokyo Shibaura Denki Kabushiki Kaisha Exposure device
EP0022175A1 (en) * 1979-06-21 1981-01-14 International Business Machines Corporation Electrophotographic copier with variable original document to image size ratio
US4426153A (en) 1979-06-21 1984-01-17 Ibm Corporation Apparatus for the reduction of image intensity variations in a continuously variable reducing copier
USRE31499E (en) 1976-11-01 1984-01-17 Xerox Corporation Illumination system utilizing two opposing DC lamps with an optimum barrel-shaped slit

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3612679A (en) * 1969-05-02 1971-10-12 Xerox Corp Scanning apparatus
FR2297443A1 (en) * 1975-01-13 1976-08-06 Minolta Camera Kk Illuminated slit type electro photographic copier deive - has light through put slit with control device and tapered shape specially designed for optimum performance
US4086010A (en) * 1976-11-01 1978-04-25 Xerox Corporation Illumination system utilizing two opposing DC lamps with an optimum barrel-shaped slit
USRE31499E (en) 1976-11-01 1984-01-17 Xerox Corporation Illumination system utilizing two opposing DC lamps with an optimum barrel-shaped slit
US4194835A (en) * 1977-09-27 1980-03-25 Tokyo Shibaura Denki Kabushiki Kaisha Exposure device
EP0022175A1 (en) * 1979-06-21 1981-01-14 International Business Machines Corporation Electrophotographic copier with variable original document to image size ratio
US4426153A (en) 1979-06-21 1984-01-17 Ibm Corporation Apparatus for the reduction of image intensity variations in a continuously variable reducing copier

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