EP0429309A3 - Biasing scheme for improving latitudes in the tri-level xerographic process - Google Patents

Biasing scheme for improving latitudes in the tri-level xerographic process Download PDF

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Publication number
EP0429309A3
EP0429309A3 EP19900312719 EP90312719A EP0429309A3 EP 0429309 A3 EP0429309 A3 EP 0429309A3 EP 19900312719 EP19900312719 EP 19900312719 EP 90312719 A EP90312719 A EP 90312719A EP 0429309 A3 EP0429309 A3 EP 0429309A3
Authority
EP
European Patent Office
Prior art keywords
latitudes
tri
improving
biasing scheme
xerographic process
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
EP19900312719
Other versions
EP0429309A2 (en
EP0429309B1 (en
Inventor
Richard P. Germain
James E. Williams
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
Priority claimed from US07/440,914 external-priority patent/US5079114A/en
Priority claimed from US07/440,913 external-priority patent/US5080988A/en
Application filed by Xerox Corp filed Critical Xerox Corp
Publication of EP0429309A2 publication Critical patent/EP0429309A2/en
Publication of EP0429309A3 publication Critical patent/EP0429309A3/en
Application granted granted Critical
Publication of EP0429309B1 publication Critical patent/EP0429309B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • G03G15/01—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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/01—Electrographic processes using a charge pattern for multicoloured copies
    • G03G13/013—Electrographic processes using a charge pattern for multicoloured copies characterised by the developing step, e.g. the properties of the colour developers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Color Electrophotography (AREA)
EP90312719A 1989-11-22 1990-11-22 Biasing scheme for improving latitudes in the tri-level xerographic process Expired - Lifetime EP0429309B1 (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US440914 1989-11-22
US07/440,914 US5079114A (en) 1989-11-22 1989-11-22 Biasing switching between tri-level and bi-level development
US07/440,913 US5080988A (en) 1989-11-22 1989-11-22 Biasing scheme for improving latitudes in the tri-level xerographic process
US440913 1989-11-22

Publications (3)

Publication Number Publication Date
EP0429309A2 EP0429309A2 (en) 1991-05-29
EP0429309A3 true EP0429309A3 (en) 1991-11-06
EP0429309B1 EP0429309B1 (en) 1994-12-14

Family

ID=27032602

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90312719A Expired - Lifetime EP0429309B1 (en) 1989-11-22 1990-11-22 Biasing scheme for improving latitudes in the tri-level xerographic process

Country Status (2)

Country Link
EP (1) EP0429309B1 (en)
DE (1) DE69015131T2 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5223897A (en) * 1991-09-05 1993-06-29 Xerox Corporation Tri-level imaging apparatus using different electrostatic targets for cycle up and runtime

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145942A (en) * 1983-08-05 1985-04-11 Konishiroku Photo Ind Developing latent eletrostatic images
EP0320277A2 (en) * 1987-12-11 1989-06-14 Xerox Corporation Highlight colour imaging
EP0378440A2 (en) * 1989-01-13 1990-07-18 Canon Kabushiki Kaisha An image forming apparatus

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6444468A (en) * 1987-08-12 1989-02-16 Fuji Xerox Co Ltd Developing method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2145942A (en) * 1983-08-05 1985-04-11 Konishiroku Photo Ind Developing latent eletrostatic images
EP0320277A2 (en) * 1987-12-11 1989-06-14 Xerox Corporation Highlight colour imaging
EP0378440A2 (en) * 1989-01-13 1990-07-18 Canon Kabushiki Kaisha An image forming apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 13, no. 242 (P-880)(3590) June 7, 1989 & JP-A-1 044 468 (FUJI XEROX ) February 16, 1989 *

Also Published As

Publication number Publication date
DE69015131T2 (en) 1995-07-27
EP0429309A2 (en) 1991-05-29
DE69015131D1 (en) 1995-01-26
EP0429309B1 (en) 1994-12-14

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