GB1336819A - Optical projection system - Google Patents

Optical projection system

Info

Publication number
GB1336819A
GB1336819A GB4457871A GB4457871A GB1336819A GB 1336819 A GB1336819 A GB 1336819A GB 4457871 A GB4457871 A GB 4457871A GB 4457871 A GB4457871 A GB 4457871A GB 1336819 A GB1336819 A GB 1336819A
Authority
GB
United Kingdom
Prior art keywords
lens
plane
reflector
pair
image
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
GB4457871A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1336819A publication Critical patent/GB1336819A/en
Expired legal-status Critical Current

Links

Classifications

    • 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)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
GB4457871A 1970-11-06 1971-09-24 Optical projection system Expired GB1336819A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US8750870A 1970-11-06 1970-11-06

Publications (1)

Publication Number Publication Date
GB1336819A true GB1336819A (en) 1973-11-14

Family

ID=22205608

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4457871A Expired GB1336819A (en) 1970-11-06 1971-09-24 Optical projection system

Country Status (10)

Country Link
JP (1) JPS541178B1 (fr)
AU (1) AU462019B2 (fr)
BE (1) BE774410A (fr)
CA (1) CA967796A (fr)
CH (1) CH530661A (fr)
DE (1) DE2154944A1 (fr)
ES (1) ES396573A1 (fr)
FR (1) FR2116380B1 (fr)
GB (1) GB1336819A (fr)
NL (1) NL7113050A (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609744A1 (de) * 1975-03-10 1976-09-23 Seib Ltd Martin Optisches betrachtungsgeraet mit wahlweiser kopiermoeglichkeit
DE2627361A1 (de) * 1975-06-20 1976-12-30 Xerox Corp Geraet zum betrachten und projizieren eines originals auf eine bewegliche bildplatte, insbesondere in einem elektrostatographischen kopiergeraet
FR2330044A1 (fr) * 1975-10-30 1977-05-27 Xerox Corp Appareil de reprographie a agrandissement variable

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3778147A (en) * 1972-07-11 1973-12-11 Xerox Corp Electrostatic reproduction machine having selectable magnification ratios
US3897148A (en) * 1973-11-29 1975-07-29 Ibm Optical scanning system
JPS6014345B2 (ja) * 1974-12-25 1985-04-12 株式会社リコー 電子複写機における変倍スリツト露光方法
US4120578A (en) * 1976-09-07 1978-10-17 International Business Machines Corporation Continuously variable reduction scanning optics drive
GB1525218A (en) * 1976-09-07 1978-09-20 Ibm Electrophotographic copying machine
US4105327A (en) * 1976-12-09 1978-08-08 International Business Machines Corporation Multiple reduction indicators for continuously variable reduction copier machines
JPS5392126A (en) * 1977-01-25 1978-08-12 Ricoh Co Ltd Exposure regulator for variable magnification copying machine
CA1126800A (fr) * 1978-11-09 1982-06-29 Benzion Landa Dispositif de focalisation tournable pour copieur electrophotographique a agrandissement variable

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1198539A (en) * 1968-12-09 1970-07-15 Tokyo Shibaura Electric Co Photocopying Apparatus.
JPS4821892B1 (fr) * 1969-02-28 1973-07-02

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2609744A1 (de) * 1975-03-10 1976-09-23 Seib Ltd Martin Optisches betrachtungsgeraet mit wahlweiser kopiermoeglichkeit
DE2627361A1 (de) * 1975-06-20 1976-12-30 Xerox Corp Geraet zum betrachten und projizieren eines originals auf eine bewegliche bildplatte, insbesondere in einem elektrostatographischen kopiergeraet
US4013361A (en) * 1975-06-20 1977-03-22 Xerox Corporation Optical apparatus and reproducing machine
FR2330044A1 (fr) * 1975-10-30 1977-05-27 Xerox Corp Appareil de reprographie a agrandissement variable

Also Published As

Publication number Publication date
AU3527971A (en) 1973-05-10
BE774410A (fr) 1972-02-14
FR2116380A1 (fr) 1972-07-13
AU462019B2 (en) 1975-06-12
CA967796A (en) 1975-05-20
CH530661A (de) 1972-11-15
NL7113050A (fr) 1972-05-09
DE2154944A1 (de) 1972-05-18
FR2116380B1 (fr) 1974-05-31
ES396573A1 (es) 1974-05-16
JPS541178B1 (fr) 1979-01-22

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee