FR2441200A1 - Moyen de focalisation rotatif pour copieur electrophotographique a grossissement variable - Google Patents

Moyen de focalisation rotatif pour copieur electrophotographique a grossissement variable

Info

Publication number
FR2441200A1
FR2441200A1 FR7922578A FR7922578A FR2441200A1 FR 2441200 A1 FR2441200 A1 FR 2441200A1 FR 7922578 A FR7922578 A FR 7922578A FR 7922578 A FR7922578 A FR 7922578A FR 2441200 A1 FR2441200 A1 FR 2441200A1
Authority
FR
France
Prior art keywords
variable magnification
copier
electrophotographic copier
focusing means
rotary focusing
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.)
Granted
Application number
FR7922578A
Other languages
English (en)
Other versions
FR2441200B1 (fr
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.)
Savin Corp
Original Assignee
Savin 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 Savin Corp filed Critical Savin Corp
Publication of FR2441200A1 publication Critical patent/FR2441200A1/fr
Application granted granted Critical
Publication of FR2441200B1 publication Critical patent/FR2441200B1/fr
Granted 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
    • G03B27/50—Projection printing apparatus, e.g. enlarger, copying camera with slit or like diaphragm moving over original for progressive exposure
    • 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)

Abstract

L'INVENTION CONCERNE UN COPIEUR ELECTROPHOTOGRAPHIQUE A GROSSISSEMENT VARIABLE. IL COMPORTE UNE SURFACE PHOTOCONDUCTRICE 32, UN MOYEN DE FOCALISATION CONSTITUE D'UN OBJECTIF 20 DESTINE A PERMETTRE LA FORMATION D'UNE IMAGE ELECTROSTATIQUE LATENTE SUR LA SURFACE 32, ET UN MOYEN 38, 154 PERMETTANT DE FAIRE TOURNER L'OBJECTIF 20 PERPENDICULAIREMENT A SON AXE OPTIQUE AFIN DE FAIRE SELECTIVEMENT VARIER LE GROSSISSEMENT DE L'IMAGE. PAR COMPARAISON AVEC LES COPIEURS DE LA TECHNIQUE ANTERIEURE OU L'OBJECTIF EST DEPLACE SUIVANT SON AXE OPTIQUE, LE COPIEUR DE L'INVENTION EST MECANIQUEMENT SIMPLE ET PEU COUTEUX.
FR7922578A 1978-11-09 1979-09-10 Moyen de focalisation rotatif pour copieur electrophotographique a grossissement variable Granted FR2441200A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US95930378A 1978-11-09 1978-11-09

Publications (2)

Publication Number Publication Date
FR2441200A1 true FR2441200A1 (fr) 1980-06-06
FR2441200B1 FR2441200B1 (fr) 1984-07-06

Family

ID=25501892

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7922578A Granted FR2441200A1 (fr) 1978-11-09 1979-09-10 Moyen de focalisation rotatif pour copieur electrophotographique a grossissement variable

Country Status (6)

Country Link
JP (1) JPS5567766A (fr)
CA (1) CA1126800A (fr)
DE (1) DE2944721A1 (fr)
FR (1) FR2441200A1 (fr)
GB (1) GB2034489B (fr)
IT (1) IT1122487B (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6156335A (ja) * 1984-08-28 1986-03-22 Konishiroku Photo Ind Co Ltd 可変倍率露光装置
JPS6188145U (fr) * 1984-11-14 1986-06-09
JPS62169137A (ja) * 1986-01-21 1987-07-25 Fuji Photo Film Co Ltd マイクロ写真拡大復元装置
EP2961040B1 (fr) 2013-02-20 2019-05-08 Mitsubishi Electric Corporation Moteur électrique ayant des aimants permanents intégrés

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049968A (en) * 1959-03-02 1962-08-21 Xerox Corp Xerographic reproduction apparatus
US3740137A (en) * 1971-03-09 1973-06-19 Canon Kk Photocopying apparatus
FR2246901A1 (fr) * 1973-10-02 1975-05-02 Gestetner Byfleet Ltd

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS541178B1 (fr) * 1970-11-06 1979-01-22
US4033692A (en) * 1975-10-30 1977-07-05 Xerox Corporation Multi-mode reproducing machine
DE2735679A1 (de) * 1977-08-08 1979-02-15 Canon Kk Fotokopiergeraet

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049968A (en) * 1959-03-02 1962-08-21 Xerox Corp Xerographic reproduction apparatus
US3740137A (en) * 1971-03-09 1973-06-19 Canon Kk Photocopying apparatus
FR2246901A1 (fr) * 1973-10-02 1975-05-02 Gestetner Byfleet Ltd

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
EXBK/76 *

Also Published As

Publication number Publication date
IT7925077A0 (it) 1979-08-10
JPS5567766A (en) 1980-05-22
GB2034489A (en) 1980-06-04
DE2944721C2 (fr) 1990-10-18
DE2944721A1 (de) 1980-05-22
GB2034489B (en) 1983-01-06
IT1122487B (it) 1986-04-23
CA1126800A (fr) 1982-06-29
FR2441200B1 (fr) 1984-07-06
JPH045988B2 (fr) 1992-02-04

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Legal Events

Date Code Title Description
TP Transmission of property
ST Notification of lapse