GB1521708A - Electrophotographic apparatus - Google Patents

Electrophotographic apparatus

Info

Publication number
GB1521708A
GB1521708A GB4315575A GB4315575A GB1521708A GB 1521708 A GB1521708 A GB 1521708A GB 4315575 A GB4315575 A GB 4315575A GB 4315575 A GB4315575 A GB 4315575A GB 1521708 A GB1521708 A GB 1521708A
Authority
GB
United Kingdom
Prior art keywords
cos
electro
function
copying apparatus
colour
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
GB4315575A
Other languages
English (en)
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Publication of GB1521708A publication Critical patent/GB1521708A/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
    • 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
    • G03G15/043—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 means for controlling illumination or exposure
    • G03G15/0435—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 means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter

Landscapes

  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • General Physics & Mathematics (AREA)
  • Light Sources And Details Of Projection-Printing Devices (AREA)
GB4315575A 1975-01-06 1975-10-21 Electrophotographic apparatus Expired GB1521708A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US53882575A 1975-01-06 1975-01-06

Publications (1)

Publication Number Publication Date
GB1521708A true GB1521708A (en) 1978-08-16

Family

ID=24148570

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4315575A Expired GB1521708A (en) 1975-01-06 1975-10-21 Electrophotographic apparatus

Country Status (2)

Country Link
GB (1) GB1521708A (nl)
NL (1) NL7514354A (nl)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345590A2 (en) * 1988-06-06 1989-12-13 Polaroid Corporation Compact hand-held apparatus for copying an illuminated image

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4349257A (en) * 1981-02-03 1982-09-14 Polaroid Corporation Camera having a selected pattern of pre-exposure for final exposure correction

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0345590A2 (en) * 1988-06-06 1989-12-13 Polaroid Corporation Compact hand-held apparatus for copying an illuminated image
EP0345590A3 (en) * 1988-06-06 1991-06-19 Polaroid Corporation Compact hand-held apparatus for copying an illuminated image

Also Published As

Publication number Publication date
NL7514354A (nl) 1976-07-08

Similar Documents

Publication Publication Date Title
DE3066172D1 (en) Illumination means for electrographic reproduction
JPS53125022A (en) Illumination device for color enlarger and color copier
JPS5391728A (en) Correction device for uneven intensity of illumination for variable multiplication copier
JPS57201227A (en) Color compensating device of light source for color printer
AU3759178A (en) Photosensitive paper for electrophotography
DE2860556D1 (en) Photographic reproduction apparatus for transparent documents, especially of the photographic enlarger type
GB1521708A (en) Electrophotographic apparatus
JPS52140333A (en) Optical device
JPS535696A (en) Discriminating apparatus for pattern of printed matter
JPS5214422A (en) Automatic control method of exposure for the electrophotographic copying machine
GB2034488B (en) Stationary light source electrophotographic copier
WO1979000793A1 (en) Ignitting means for discharge lamp of reproducer
JPS547348A (en) Recorder
JPS54136333A (en) Elimination method of residual charge for electrophotographic copier
SU624192A1 (ru) Осветительна система кинокопировального аппарата
JPS5711361A (en) Copying apparatus
JPS5549801A (en) Lighting apparatus projector for asymmetrical light distribution
SU566227A1 (ru) Устройство дл оптической развертки оригинала электрофотографического аппарата
JPS5236037A (en) Color copying process
JPS53143227A (en) Electrophotography
IL62616A (en) Light scanning assembly for electrophotographic printing plate making apparatus
JPS54130944A (en) Light source for copying machine
JPS53143228A (en) Electrophotography
JPS5438128A (en) Color electrophotographic copying process
JPS574074A (en) Variable magnification device of copying machine

Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19931021