GB1517347A - Optical apparatus in which light can be projected to at least one image plane - Google Patents

Optical apparatus in which light can be projected to at least one image plane

Info

Publication number
GB1517347A
GB1517347A GB32480/75A GB3248075A GB1517347A GB 1517347 A GB1517347 A GB 1517347A GB 32480/75 A GB32480/75 A GB 32480/75A GB 3248075 A GB3248075 A GB 3248075A GB 1517347 A GB1517347 A GB 1517347A
Authority
GB
United Kingdom
Prior art keywords
original
light
drum
sides
mirror
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
GB32480/75A
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 GB1517347A publication Critical patent/GB1517347A/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
    • G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
    • G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Counters In Electrophotography And Two-Sided Copying (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Optical Systems Of Projection Type Copiers (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Projection Apparatus (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

1517347 Electro-photographic projection printing XEROX CORP 4 Aug 1975 [5 Aug 1974] 32480/75 Heading G2A Images of both sides of a double-sided original 1 in an object plane are projected on to an image plane for copying. The original 1 is held between hinged transparent plates 2, 3 and illuminated on both sides by lamps 4, 5 energized one at a time. Light from the illuminated side is reflected into a lens system 8 which, with the aid of a mirror 9, forms an image on the surface of a rotating drum 6 with a photo-conductive surface. The drum 6 forms part of a conventional electro-photographic apparatus for producing copies on sheets fed to a bin 15. As shown in Fig. 2B, the original I in its holder 2, 3 is moved to the right during exposure, by means of a rack 17 and pinion 18. Lamp 4 is on, and light from the top of the original is reflected by mirror 7 into the lens system 8. The speed of movement of the original is related to the speed of drum 6. When the top side has been copied, lamp 4 is extinguished and lamp 5 is energized by operation of a limit switch, light from the underside of original 1 being reflected by mirror 10 into the lens system 8. The original is returned, producing a latent image of the original on the next portion of the surface of drum 6. The optical system orients the images such that pages of text (for example) have their lines running sequentially in the same direction. Arrangements may be made to copy both sides of the original on to opposite sides of a copy sheet, Figs. 4, 5 (not shown). Two simplex documents may be placed back to back and copied.
GB32480/75A 1974-08-05 1975-08-04 Optical apparatus in which light can be projected to at least one image plane Expired GB1517347A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US49479874A 1974-08-05 1974-08-05

Publications (1)

Publication Number Publication Date
GB1517347A true GB1517347A (en) 1978-07-12

Family

ID=23966019

Family Applications (1)

Application Number Title Priority Date Filing Date
GB32480/75A Expired GB1517347A (en) 1974-08-05 1975-08-04 Optical apparatus in which light can be projected to at least one image plane

Country Status (12)

Country Link
JP (2) JPS5139054A (en)
AU (1) AU8316775A (en)
BE (1) BE832115A (en)
BR (1) BR7504957A (en)
CA (1) CA1114003A (en)
DE (2) DE2534977C2 (en)
ES (1) ES440012A1 (en)
FR (1) FR2281590A1 (en)
GB (1) GB1517347A (en)
IT (1) IT1040276B (en)
NL (1) NL7509333A (en)
SE (1) SE7508701L (en)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
USRE32422E (en) * 1977-02-14 1987-05-19 Eastman Kodak Company Method and apparatus for producing duplex copies
JPS5665156A (en) * 1979-10-31 1981-06-02 Canon Inc Picture forming deivce
JPS58205141A (en) * 1982-05-25 1983-11-30 Mikio Nagata Picture projector of electrophotographic copying machine
US4488801A (en) * 1983-01-03 1984-12-18 International Business Machines Corporation Maximum throughput duplexing system for xerographic machines
JPS6076731A (en) * 1983-10-03 1985-05-01 Fuji Xerox Co Ltd Automatic optical device for double sides
JPS60186827A (en) * 1984-03-06 1985-09-24 Fuji Xerox Co Ltd Copying machine equipped with both-side copying function
JPS60156556U (en) * 1984-03-27 1985-10-18 コニカ株式会社 Photographic paper automatic developing device
US4673285A (en) * 1986-05-23 1987-06-16 Xerox Corporation Optical scanning of duplex documents
JPS63180849U (en) * 1987-05-13 1988-11-22
JPH0248846Y2 (en) * 1987-10-27 1990-12-21
JP2722265B2 (en) * 1989-12-07 1998-03-04 株式会社日立製作所 Electrophotographic copying machine
JPH06343125A (en) * 1992-10-30 1994-12-13 Canon Inc Double-sided recording controller

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3318212A (en) * 1965-09-20 1967-05-09 Xerox Corp Duplex xerographic reproduction
DE1940284U (en) 1966-04-15 1966-06-08 Wilhelm Jun Branscheid DEVICE FOR SHAPING CEILINGS.
DE1914959B2 (en) 1968-03-26 1970-08-13 Eastman Kodak Co., Rochester, N.Y. (V.St.A.) Electrophotographic copier for making copies on both sides of a sheet of paper
DE1940284C3 (en) * 1968-08-12 1985-05-15 Rank Xerox Ltd., London Electrophotographic copier for making double-sided copies
US3671118A (en) 1969-12-24 1972-06-20 Xerox Corp Apparatus for creating duplex reproductions
JPS5510913B2 (en) * 1971-12-14 1980-03-19
US3844654A (en) * 1972-11-16 1974-10-29 Xerox Corp Duplex copying system
DE2424191C2 (en) * 1974-05-17 1983-04-14 Agfa-Gevaert Ag, 5090 Leverkusen Imaging system for copiers
JPS5442672U (en) * 1977-08-31 1979-03-23

Also Published As

Publication number Publication date
AU8316775A (en) 1977-01-20
DE2534977A1 (en) 1976-02-19
SE7508701L (en) 1976-02-06
JPS5139054A (en) 1976-04-01
FR2281590B1 (en) 1977-12-16
BE832115A (en) 1975-12-01
BR7504957A (en) 1976-07-27
JPS563546B2 (en) 1981-01-26
ES440012A1 (en) 1977-06-01
IT1040276B (en) 1979-12-20
FR2281590A1 (en) 1976-03-05
DE2534977C2 (en) 1985-09-19
CA1114003A (en) 1981-12-08
DE2560246C2 (en) 1985-09-26
NL7509333A (en) 1975-10-31
JPS5570854A (en) 1980-05-28

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Legal Events

Date Code Title Description
PS Patent sealed
746 Register noted 'licences of right' (sect. 46/1977)
PE20 Patent expired after termination of 20 years

Effective date: 19950803