GB1361647A - Reproduction of images in colour - Google Patents

Reproduction of images in colour

Info

Publication number
GB1361647A
GB1361647A GB5911771A GB5911771A GB1361647A GB 1361647 A GB1361647 A GB 1361647A GB 5911771 A GB5911771 A GB 5911771A GB 5911771 A GB5911771 A GB 5911771A GB 1361647 A GB1361647 A GB 1361647A
Authority
GB
United Kingdom
Prior art keywords
toner
roller
latent image
colour
potential
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
GB5911771A
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 GB1361647A publication Critical patent/GB1361647A/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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0818—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the structure of the donor member, e.g. surface properties
    • 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
    • G03G15/01—Apparatus for electrographic processes using a charge pattern for producing multicoloured copies
    • G03G15/0105—Details of unit
    • G03G15/0121—Details of unit for developing
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0167—Apparatus for electrophotographic processes for producing multicoloured copies single electrographic recording member
    • G03G2215/017—Apparatus for electrophotographic processes for producing multicoloured copies single electrographic recording member single rotation of recording member to produce multicoloured copy
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/01—Apparatus for electrophotographic processes for producing multicoloured copies
    • G03G2215/0167—Apparatus for electrophotographic processes for producing multicoloured copies single electrographic recording member
    • G03G2215/0187—Multicoloured toner image formed on the recording member
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/04—Arrangements for exposing and producing an image
    • G03G2215/0495—Plural charge levels of latent image produced, e.g. trilevel
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0602—Developer
    • G03G2215/0604—Developer solid type
    • G03G2215/0614—Developer solid type one-component
    • G03G2215/0619—Developer solid type one-component non-contact (flying development)
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device
    • G03G2215/0641—Without separate supplying member (i.e. with developing housing sliding on donor member)
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S101/00—Printing
    • Y10S101/37—Printing employing electrostatic force

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color Electrophotography (AREA)

Abstract

1361647 Electro-photographic processes XEROX CORP 20 Dec 1971 [23 Dec 1970] 59117/71 Heading G2H A uniformly charged photo-conductor 10 is exposed to the image of an original to form an electrostatic latent image, is developed with toner of a first colour (preferably black) under the influence of an electrode held at a potential such that the first toner adheres only to the higher potential regions of the latent image and is then developed with toner of a second colour (preferably red, blue or green) under the influence of an electrode held at a potential such that the second toner adheres to the lower potential regions of the latent image. As shown, a developing roller 40 has mutually insulated segments to which different potentials can be applied by commutators 51. The roller 40 passes a toner reservoir 67, a vacuum nozzle 68 to remove toner agglomerates, a corotron 69, an electrically biased doctor roller 70, the image bearing member 10, an A.C. cleaning corotron 75 and a cleaning brush 76, appropriate potentials being applied to the segments of the roller as they pass these stations. Roller 40 applies the first toner and a similar roller applies the other toner. Exposure system Fig. 1, (not shown). An original (18) on a platen (19) is illuminated by a moving lamp assembly (20) and scanned by a lens (15), mirrors (16, 17) being positioned on respective sides of the lens.
GB5911771A 1970-12-23 1971-12-20 Reproduction of images in colour Expired GB1361647A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10098270A 1970-12-23 1970-12-23

Publications (1)

Publication Number Publication Date
GB1361647A true GB1361647A (en) 1974-07-30

Family

ID=22282528

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5911771A Expired GB1361647A (en) 1970-12-23 1971-12-20 Reproduction of images in colour

Country Status (8)

Country Link
US (1) US3702483A (en)
BE (1) BE777015A (en)
CA (1) CA935334A (en)
DE (1) DE2163591A1 (en)
FR (1) FR2119655A5 (en)
GB (1) GB1361647A (en)
IT (1) IT944210B (en)
NL (1) NL7117555A (en)

Families Citing this family (26)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2208142B1 (en) * 1972-11-22 1980-07-11 Canon Kk
US4063946A (en) * 1973-01-22 1977-12-20 Rank Xerox Ltd. Electrophotographic color reproduction process employing photoconductive material with dual light fatigue properties
US3833293A (en) * 1973-07-20 1974-09-03 Xerox Corp Method of creating color transparencies
US4188213A (en) * 1973-12-03 1980-02-12 Xerox Corporation Color corrected printing system
JPS5926957B2 (en) * 1973-12-28 1984-07-02 キヤノン株式会社 Color electrophotographic method
JPS5533063B2 (en) * 1974-08-09 1980-08-28
GB1442234A (en) * 1974-09-24 1976-07-14 Rank Xerox Ltd Xerographic copying machines
US3983815A (en) * 1975-01-29 1976-10-05 Honeywell Information Systems, Inc. Apparatus and method for printing on plain paper
US4205322A (en) * 1976-04-27 1980-05-27 Nippon Electric Co., Ltd. Electrostatic method of simultaneously transferring to a recording medium a toner image having different polarities
US4078929A (en) * 1976-11-26 1978-03-14 Xerox Corporation Method for two-color development of a xerographic charge pattern
JPS6028351B2 (en) * 1977-10-13 1985-07-04 株式会社リコー Two-color electrophotographic copying device
JPS6032191B2 (en) * 1978-05-24 1985-07-26 株式会社リコー Two-color development method
JPS6060056B2 (en) * 1978-08-28 1985-12-27 株式会社リコー Information image synthesis copying method
JPS5583069A (en) * 1978-12-19 1980-06-23 Hitachi Ltd Non-impact printer
JPS5911113B2 (en) * 1979-04-20 1984-03-13 富士通株式会社 electrophotographic recording device
US4378415A (en) * 1981-10-13 1983-03-29 Xerox Corporation Color imaging, layered organic photoresponsive device having hole injection and transport layers, red sensitive layer and short wavelength sensitive layer
US4510223A (en) * 1983-02-07 1985-04-09 Coulter Systems Corporation Multicolor electrophotographic imaging process
US4509850A (en) * 1983-08-08 1985-04-09 Xerox Corporation Two-color electrophotographic printing machine
US4599285A (en) * 1983-10-03 1986-07-08 Konishiroku Photo Industry Co., Ltd. Multiplex image reproducing method
US4666804A (en) * 1984-07-06 1987-05-19 Konishiroku Photo Industry Co., Ltd. Method of and apparatus for image forming
DE3526878C2 (en) * 1984-07-27 1997-10-02 Konishiroku Photo Ind Device for generating a multicolor image
US4696880A (en) * 1984-09-06 1987-09-29 Konishiroku Photo Industry Co., Ltd. Method and apparatus for reproducing multi-color image and photoreceptor thereof
US4847655A (en) * 1987-12-11 1989-07-11 Xerox Corporation Highlight color imaging apparatus
JPH087479B2 (en) * 1988-05-19 1996-01-29 株式会社日立製作所 Multicolor recorder
US4901100A (en) * 1988-08-18 1990-02-13 Xerox Corporation Single pass color highlighting copying system
US5317373A (en) * 1992-12-23 1994-05-31 Xerox Corporation Method and apparatus for user customized colorants in an electrophotographic printing machine

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2890968A (en) * 1955-06-02 1959-06-16 Rca Corp Electrostatic printing process and developer composition therefor
US3045644A (en) * 1957-06-06 1962-07-24 Xerox Corp Two-color electrostatic printing apparatus
BE576841A (en) * 1958-03-20

Also Published As

Publication number Publication date
IT944210B (en) 1973-04-20
BE777015A (en) 1972-06-21
FR2119655A5 (en) 1972-08-04
NL7117555A (en) 1972-06-27
DE2163591A1 (en) 1972-07-13
CA935334A (en) 1973-10-16
US3702483A (en) 1972-11-07

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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