GB1199525A - Improvements relating to Apparatus for Making an Exposure on a Photosensitive Sheet. - Google Patents

Improvements relating to Apparatus for Making an Exposure on a Photosensitive Sheet.

Info

Publication number
GB1199525A
GB1199525A GB16077/68A GB1607768A GB1199525A GB 1199525 A GB1199525 A GB 1199525A GB 16077/68 A GB16077/68 A GB 16077/68A GB 1607768 A GB1607768 A GB 1607768A GB 1199525 A GB1199525 A GB 1199525A
Authority
GB
United Kingdom
Prior art keywords
sheet
exposure
mirror
exposure position
relative
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
GB16077/68A
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.)
AB Dick Co
Original Assignee
Multigraphics Inc
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 Multigraphics Inc filed Critical Multigraphics Inc
Publication of GB1199525A publication Critical patent/GB1199525A/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
    • G03B27/34—Means for automatic focusing therefor
    • G03B27/36—Means for automatic focusing therefor by mechanical connections, e.g. by cam, by linkage
    • 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
    • G03B27/62—Holders for the original
    • G03B27/6207—Holders for the original in copying cameras
    • G03B27/6214—Copy boards
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/041—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with variable magnification
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/26—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the charge pattern is obtained by projection of the entire image, i.e. whole-frame projection

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Projection-Type Copiers In General (AREA)

Abstract

1,199,525. Exposing photo-sensitive sheets. ADDRESSOGRAPH-MULTIGRAPH CORP. April 3, 1968 [April 3, 1967], No.16077/68. Headings G2A and G2H. Apparatus for making an exposure on a photosensitive sheet comprises a copyboard 10 having a table 11 on which an original or several originals to be copied are centred; means (not shown) for moving the table and the originals thereon to the vertical exposure position shown in chain dot lines, Fig.1; an optical projection system - lens 19 and mirror 33 - for projecting an image of the original on to a horizontal image plane located above the exposure position; and transport means for delivering a photo-sensitive sheet 46, 47 or 48 into an exposure position on the image plane, the sheet being supported face downwards from the back, the transport means also causing the delivered sheet to dwell during exposure and then removing the sheet from the exposure position. As shown, the apparatus is suitable for electrostatic copying, being provided with a charging station 50, a developing station 64 and a fusing station 75, but the apparatus may be adapted for copying on to silver halide photo-sensitive sheets. In use, an operator selects the size sheet to be used, and this positions a probe carriage 53 relative to the mirror 33. The apparatus may be used for reducing, one-to-one copying, or enlarging, the position of the lens 19 being adjusted relative to a rod rail 30. Adjustment of the lens position automatically moves the mirror 33 and its associated probe carriage 53. The sheet of the selected size is conveyed to its exposure position on the image plane by a belt carriage 41. This comprises spaced belts which traverse the underside of a vacuum chamber housing 42 having a perforated bottom wall 43 against which the selected sheet is held by suction. The leading end of the sheet trips a micro-switch 54 mounted on the probe carriage 53 and the belts stop instantaneously while the exposure is made. For electrostatic copiers, excess developer may be brushed away by hand at a correction station 70 at which the developed sheet is stopped. Movement of the probe carriage relative to the mirror means that a sheet to be exposed will always be correctly centred relative to the mirror and hence with respect to the original.
GB16077/68A 1967-04-03 1968-04-03 Improvements relating to Apparatus for Making an Exposure on a Photosensitive Sheet. Expired GB1199525A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US62775767A 1967-04-03 1967-04-03

Publications (1)

Publication Number Publication Date
GB1199525A true GB1199525A (en) 1970-07-22

Family

ID=24516008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB16077/68A Expired GB1199525A (en) 1967-04-03 1968-04-03 Improvements relating to Apparatus for Making an Exposure on a Photosensitive Sheet.

Country Status (6)

Country Link
US (1) US3498712A (en)
BE (1) BE711672A (en)
DE (1) DE1597083C3 (en)
FR (1) FR1548057A (en)
GB (1) GB1199525A (en)
NL (1) NL6801200A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3589808A (en) * 1969-06-02 1971-06-29 Xerox Corp Reproducing apparatus
US3687544A (en) * 1970-03-11 1972-08-29 Mueller Rudolf Electrophotographic copying machine
US3689143A (en) * 1970-12-28 1972-09-05 Xerox Corp Reproducing machine
US3901593A (en) * 1973-03-27 1975-08-26 Iwatsu Electric Co Ltd Copying machines of the variable magnifying power type
US4192607A (en) * 1978-07-12 1980-03-11 Eastman Kodak Company Apparatus for selectively copying documents from two different document feeders
US4901105A (en) * 1989-02-16 1990-02-13 Xerox Corporation Constant velocity optical scanning system

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1103343A (en) * 1905-07-10 1914-07-14 Joseph Becker Method of adjusting and regulating automatically-focused enlarging or copying cameras.
US1404440A (en) * 1920-09-16 1922-01-24 August F Jobke Focusing device
US2168190A (en) * 1936-12-04 1939-08-01 Agfa Ansco Corp Photographic enlarging apparatus
US3397627A (en) * 1965-05-21 1968-08-20 Addressograph Multigraph Photoelectrostatic copying machine

Also Published As

Publication number Publication date
NL6801200A (en) 1968-10-04
DE1597083A1 (en) 1969-10-02
DE1597083B2 (en) 1978-05-24
DE1597083C3 (en) 1979-04-12
US3498712A (en) 1970-03-03
FR1548057A (en) 1968-11-29
BE711672A (en) 1968-07-15

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee