EP0000671A3 - Improved electrophotographic apparatus and method for use with electrophotosensitive toner - Google Patents

Improved electrophotographic apparatus and method for use with electrophotosensitive toner Download PDF

Info

Publication number
EP0000671A3
EP0000671A3 EP78300229A EP78300229A EP0000671A3 EP 0000671 A3 EP0000671 A3 EP 0000671A3 EP 78300229 A EP78300229 A EP 78300229A EP 78300229 A EP78300229 A EP 78300229A EP 0000671 A3 EP0000671 A3 EP 0000671A3
Authority
EP
European Patent Office
Prior art keywords
toner
electrophotosensitive
image
electrophotographic apparatus
improved
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.)
Withdrawn
Application number
EP78300229A
Other languages
German (de)
French (fr)
Other versions
EP0000671A2 (en
Inventor
Clark Nelson Kurtz
Julian Cheng
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.)
Eastman Kodak Co
Original Assignee
Eastman Kodak Co
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 Eastman Kodak Co filed Critical Eastman Kodak Co
Publication of EP0000671A2 publication Critical patent/EP0000671A2/en
Publication of EP0000671A3 publication Critical patent/EP0000671A3/en
Withdrawn legal-status Critical Current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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/01—Electrographic processes using a charge pattern for multicoloured copies
    • G03G13/016—Electrographic processes using a charge pattern for multicoloured copies in which the colour powder image is formed directly on the recording material, e.g. DEP methods
    • 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
    • G03G15/24—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 whereby at least two steps are performed simultaneously
    • 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
    • G03G15/34—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the powder image is formed directly on the recording material, e.g. by using a liquid toner
    • G03G15/344—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 in which the powder image is formed directly on the recording material, e.g. by using a liquid toner by selectively transferring the powder to the recording medium, e.g. by using a LED array
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Dry Development In Electrophotography (AREA)
  • Electrophotography Using Other Than Carlson'S Method (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

Improved electrophotographic apparatus and method for use with electrophotosensitive toner are disclosed for electrophotographic imaging. Improved image density, color separation and toner background depositation levels are achieved by triboelectrically charging a dry, powdered, electrophotosensitive toner by interaction with an applicator, e.g., a magnetic brush 12 Figure 1, and then moving such toner into contact with an oppositely-charged electrode member 2. Upon exposure of a light image of an original at the interface between the toner and image electrode, the unexposed toner particles transfer to the image electrode and the exposed particles are discharged and not deposited on that member. A positive reproduction of the original is thus formed.
EP78300229A 1977-08-01 1978-08-01 Improved electrophotographic apparatus and method for use with electrophotosensitive toner Withdrawn EP0000671A3 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US82096077A 1977-08-01 1977-08-01
US820960 1977-08-01

Publications (2)

Publication Number Publication Date
EP0000671A2 EP0000671A2 (en) 1979-02-07
EP0000671A3 true EP0000671A3 (en) 1979-02-21

Family

ID=25232133

Family Applications (1)

Application Number Title Priority Date Filing Date
EP78300229A Withdrawn EP0000671A3 (en) 1977-08-01 1978-08-01 Improved electrophotographic apparatus and method for use with electrophotosensitive toner

Country Status (2)

Country Link
EP (1) EP0000671A3 (en)
JP (1) JPS5434835A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2223604B (en) * 1988-09-06 1992-08-19 Mitsubishi Electric Corp Printer
EP0672969B1 (en) * 1994-03-18 2000-06-21 Hitachi, Ltd. Image forming method and apparatus

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100426A (en) * 1960-04-26 1963-08-13 Edward K Kaprelian Electrophotographic printers
GB950297A (en) * 1960-08-09 1964-02-26 Wilhelm Uhrig Electrostatic photocopying
DE1907903A1 (en) * 1968-02-23 1969-09-18 Xerox Corp Electrophoretic imaging process and apparatus for carrying out the process
DE1910068B2 (en) * 1968-02-29 1972-07-27 Eastman Kodak Co., Rochester, N.Y. (V.StA.) METHOD AND DEVICE FOR DEVELOPING A CHARGE IMAGE ON A RECORDING MATERIAL
US3703335A (en) * 1969-12-22 1972-11-21 Xerox Corp Multiple exposure imaging apparatus
DE2055993B2 (en) * 1969-11-14 1977-04-21 Xerox Corp., Rochester, N.Y. (V.St.A.) DEVICE FOR CLEANING A CIRCULATING RECORDING MEDIUM DIRTYED WITH A TRANSFERABLE MEDIUM

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3100426A (en) * 1960-04-26 1963-08-13 Edward K Kaprelian Electrophotographic printers
GB950297A (en) * 1960-08-09 1964-02-26 Wilhelm Uhrig Electrostatic photocopying
DE1907903A1 (en) * 1968-02-23 1969-09-18 Xerox Corp Electrophoretic imaging process and apparatus for carrying out the process
DE1910068B2 (en) * 1968-02-29 1972-07-27 Eastman Kodak Co., Rochester, N.Y. (V.StA.) METHOD AND DEVICE FOR DEVELOPING A CHARGE IMAGE ON A RECORDING MATERIAL
DE2055993B2 (en) * 1969-11-14 1977-04-21 Xerox Corp., Rochester, N.Y. (V.St.A.) DEVICE FOR CLEANING A CIRCULATING RECORDING MEDIUM DIRTYED WITH A TRANSFERABLE MEDIUM
US3703335A (en) * 1969-12-22 1972-11-21 Xerox Corp Multiple exposure imaging apparatus

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
R.M. SCHAFFERT: "ELECTROPHOTOGRAPHY", 1965, FOCAL PRESS, London and New York, page 80 to 81 *

Also Published As

Publication number Publication date
EP0000671A2 (en) 1979-02-07
JPS5434835A (en) 1979-03-14

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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18W Application withdrawn
RIN1 Information on inventor provided before grant (corrected)

Inventor name: CHENG, JULIAN

Inventor name: KURTZ, CLARK NELSON