EP1253481A3 - Direct imaging process with feed back control by measuring the amount of toner deposited - Google Patents

Direct imaging process with feed back control by measuring the amount of toner deposited Download PDF

Info

Publication number
EP1253481A3
EP1253481A3 EP02076726A EP02076726A EP1253481A3 EP 1253481 A3 EP1253481 A3 EP 1253481A3 EP 02076726 A EP02076726 A EP 02076726A EP 02076726 A EP02076726 A EP 02076726A EP 1253481 A3 EP1253481 A3 EP 1253481A3
Authority
EP
European Patent Office
Prior art keywords
image forming
measuring
amount
feed back
imaging 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
EP02076726A
Other languages
German (de)
French (fr)
Other versions
EP1253481B1 (en
EP1253481A2 (en
Inventor
René Johannes van der Meer
Aart Nijkamp
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.)
Canon Production Printing Netherlands BV
Original Assignee
Oce Technologies BV
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 Oce Technologies BV filed Critical Oce Technologies BV
Priority to EP20020076726 priority Critical patent/EP1253481B1/en
Publication of EP1253481A2 publication Critical patent/EP1253481A2/en
Publication of EP1253481A3 publication Critical patent/EP1253481A3/en
Application granted granted Critical
Publication of EP1253481B1 publication Critical patent/EP1253481B1/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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5037—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor the characteristics being an electrical parameter, e.g. voltage
    • 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
    • G03G15/348—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 using a stylus or a multi-styli array
    • 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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5033—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control by measuring the photoconductor characteristics, e.g. temperature, or the characteristics of an image on the photoconductor
    • G03G15/5041—Detecting a toner image, e.g. density, toner coverage, using a test patch
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2217/00—Details of electrographic processes using patterns other than charge patterns
    • G03G2217/0075—Process using an image-carrying member having an electrode array on its surface

Abstract

Image forming device comprising an image forming element (10) moving past an image forming station (12) in which toner (38) is deposited on the surface of the image forming element, said image forming element having at least one electrode (22, 24) extending over a predetermined surface area (20) of the image forming element, characterized by a impedance/capacitance measuring circuit (42) measuring the amount of toner deposited on said predetermined surface area (20) on the basis of a resulting change in the impedance/capacitance of the electrode (22, 24).
EP20020076726 2001-04-27 2002-04-17 Direct imaging process with feed back control by measuring the amount of toner deposited Expired - Lifetime EP1253481B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
EP20020076726 EP1253481B1 (en) 2001-04-27 2002-04-17 Direct imaging process with feed back control by measuring the amount of toner deposited

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
EP01201550 2001-04-27
EP01201550 2001-04-27
EP20020076726 EP1253481B1 (en) 2001-04-27 2002-04-17 Direct imaging process with feed back control by measuring the amount of toner deposited

Publications (3)

Publication Number Publication Date
EP1253481A2 EP1253481A2 (en) 2002-10-30
EP1253481A3 true EP1253481A3 (en) 2009-02-18
EP1253481B1 EP1253481B1 (en) 2010-11-10

Family

ID=26076891

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20020076726 Expired - Lifetime EP1253481B1 (en) 2001-04-27 2002-04-17 Direct imaging process with feed back control by measuring the amount of toner deposited

Country Status (1)

Country Link
EP (1) EP1253481B1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2839346A1 (en) 2012-04-19 2015-02-25 OCE-Technologies B.V. An image forming device comprising a direct image forming element

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01216378A (en) * 1988-02-25 1989-08-30 Mita Ind Co Ltd Measuring method for developing current
US5287127A (en) * 1992-02-25 1994-02-15 Salmon Peter C Electrostatic printing apparatus and method
JPH06250504A (en) * 1993-02-26 1994-09-09 Canon Inc Image forming device
US5666194A (en) * 1996-05-30 1997-09-09 Xerox Corporation Apparatus for detecting marking material
DE19643611A1 (en) * 1996-10-22 1998-04-30 Oce Printing Systems Gmbh Method of determining colour uniformity of applied toner for printers and copiers
US5963767A (en) * 1996-07-25 1999-10-05 Oce-Technologies, B.V. Image printing apparatus

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01216378A (en) * 1988-02-25 1989-08-30 Mita Ind Co Ltd Measuring method for developing current
US5287127A (en) * 1992-02-25 1994-02-15 Salmon Peter C Electrostatic printing apparatus and method
JPH06250504A (en) * 1993-02-26 1994-09-09 Canon Inc Image forming device
US5666194A (en) * 1996-05-30 1997-09-09 Xerox Corporation Apparatus for detecting marking material
US5963767A (en) * 1996-07-25 1999-10-05 Oce-Technologies, B.V. Image printing apparatus
DE19643611A1 (en) * 1996-10-22 1998-04-30 Oce Printing Systems Gmbh Method of determining colour uniformity of applied toner for printers and copiers

Also Published As

Publication number Publication date
EP1253481B1 (en) 2010-11-10
EP1253481A2 (en) 2002-10-30

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