US3647293B1 - - Google Patents

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Publication number
US3647293B1
US3647293B1 US3647293DA US3647293B1 US 3647293 B1 US3647293 B1 US 3647293B1 US 3647293D A US3647293D A US 3647293DA US 3647293 B1 US3647293 B1 US 3647293B1
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US
United States
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 - Lifetime
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English (en)
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Publication of US3647293A publication Critical patent/US3647293A/en
Publication of US3647293B1 publication Critical patent/US3647293B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • G03G15/09—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer using magnetic brush
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/0005—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium
    • G03G21/0047—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge for removing solid developer or debris from the electrographic recording medium using electrostatic or magnetic means; Details thereof, e.g. magnetic pole arrangement of magnetic devices
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2221/00—Processes not provided for by group G03G2215/00, e.g. cleaning or residual charge elimination
    • G03G2221/0005—Cleaning of residual toner

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Cleaning In Electrography (AREA)
  • Control Or Security For Electrophotography (AREA)
US94037A 1970-12-01 1970-12-01 Copying system featuring combined developing-cleaning station alternately activated Expired - Lifetime US3647293A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US9403770A 1970-12-01 1970-12-01

Publications (2)

Publication Number Publication Date
US3647293A US3647293A (en) 1972-03-07
US3647293B1 true US3647293B1 (ja) 1987-08-18

Family

ID=22242433

Family Applications (1)

Application Number Title Priority Date Filing Date
US94037A Expired - Lifetime US3647293A (en) 1970-12-01 1970-12-01 Copying system featuring combined developing-cleaning station alternately activated

Country Status (8)

Country Link
US (1) US3647293A (ja)
JP (3) JPS5721706B1 (ja)
AU (1) AU460880B2 (ja)
BE (1) BE775465A (ja)
CA (1) CA944012A (ja)
ES (1) ES397448A1 (ja)
FR (1) FR2117089A5 (ja)
IT (1) IT940700B (ja)

Cited By (55)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318839A1 (de) * 1972-04-13 1973-10-18 Canon Kk Elektrophotographische vorrichtung
DE2359792A1 (de) * 1972-11-30 1974-06-20 Mita Industrial Co Ltd Elektrostatische kopiervorrichtung
JPS5054333A (ja) * 1973-09-10 1975-05-14
US3893416A (en) * 1973-12-27 1975-07-08 Xerox Corp Development and cleaning apparatus for reverse path machine
DE2424350A1 (de) * 1974-05-20 1975-11-27 Turlabor Ag Verfahren zur elektrographischen bilderzeugung und vorrichtung zur ausfuehrung des verfahrens
US3982830A (en) * 1974-12-06 1976-09-28 International Business Machines Corporation Magnetic bead carryout reduction by altering the developer's bias voltage
FR2328993A1 (fr) * 1975-10-21 1977-05-20 Elfotec Ag Procede de reproduction electrophotographique d'une image
US4053218A (en) * 1975-11-10 1977-10-11 Xerox Corporation Development system
JPS52141642A (en) * 1977-04-11 1977-11-26 Canon Inc Image forming device
US4077711A (en) * 1974-05-28 1978-03-07 Ricoh Company, Ltd. Electrophotographic copying apparatus of wet developing type
US4086873A (en) * 1974-07-09 1978-05-02 Konishiroku Photo Industry Co., Ltd. Electrophotographic developing device incorporating a developing electrode having an insulation layer on its surface
US4087170A (en) * 1975-06-13 1978-05-02 Tokyo Shibaura Electric Co., Ltd. Electrostatic copying apparatus with combined charging transfer unit
US4136942A (en) * 1975-11-25 1979-01-30 Canon Kabushiki Kaisha Electrophotographic apparatus
US4178095A (en) * 1978-04-10 1979-12-11 International Business Machines Corporation Abnormally low reflectance photoconductor sensing system
US4179213A (en) * 1978-04-10 1979-12-18 International Business Machines Corporation Vector pinning in an electrophotographic machine
JPS55577A (en) * 1979-04-14 1980-01-05 Canon Inc Image former
JPS55575A (en) * 1979-04-14 1980-01-05 Canon Inc Image former
US4183657A (en) * 1978-04-10 1980-01-15 International Business Machines Corporation Dynamic reference for an image quality control system
US4185910A (en) * 1976-06-30 1980-01-29 Tokyo Shibaura Electric Co., Ltd. Photoconductive member cleaning device using a magnetic brush for electrostatic copying machines
US4185909A (en) * 1972-04-13 1980-01-29 Canon Kabushiki Kaisha Cleaning method and device for electrophotographic machine
US4190464A (en) * 1971-06-03 1980-02-26 Canon Kabushiki Kaisha Method for cleaning a photoconductive surface with liquid toner
US4201465A (en) * 1975-11-26 1980-05-06 Ricoh Company, Ltd. Drum cleaning process and apparatus for electrophotography
US4205912A (en) * 1975-11-11 1980-06-03 Tokyo Shibaura Electric Company Limited Electrophotographic apparatus
JPS55120070A (en) * 1979-12-01 1980-09-16 Canon Inc Image forming device
US4265998A (en) * 1979-11-13 1981-05-05 International Business Machines Corporation Electrophotographic photoreceptive background areas cleaned by backcharge process
US4278342A (en) * 1979-09-04 1981-07-14 International Business Machines Corporation Xerographic charging
US4304273A (en) * 1979-12-31 1981-12-08 International Business Machines Corporation Toner container and toner dispensing apparatus
US4320958A (en) * 1980-10-27 1982-03-23 Xerox Corporation Combined processing unit
US4330199A (en) * 1972-04-13 1982-05-18 Canon Kabushiki Kaisha Electrophotographic device
US4332458A (en) * 1978-10-02 1982-06-01 Pitney Bowes Inc. Table top copy machine
US4335955A (en) * 1978-04-24 1982-06-22 Ragen Precision Industries, Inc. Electrostatic display apparatus
DE3211736A1 (de) * 1981-03-31 1982-11-11 Sharp K.K., Osaka Elektrophotographisches kopiergeraet
DE3206780A1 (de) * 1981-02-27 1982-12-09 Sharp K.K., Osaka Verfahren und einrichtung zum entwickeln und zur bildtraeger-reinigung in elektrophotographischen kopiergeraeten
US4415263A (en) * 1981-10-22 1983-11-15 Tetras S.A. Electrophotographic copier apparatus
US4487499A (en) * 1981-10-22 1984-12-11 Tetras, S.A. Synchronized document feed for electrophotographic imaging copier apparatus
US4488802A (en) * 1982-01-14 1984-12-18 Fuji Xerox Co., Ltd. Electrophotographic device with single stations serving multiple functions
US4500198A (en) * 1982-12-10 1985-02-19 International Business Machines Corporation Multiple roller magnetic brush developer having development electrode voltage switching
US4502778A (en) * 1982-12-27 1985-03-05 International Business Machines Corporation System for monitoring and controlling electrophotographic toner operation
US4515465A (en) * 1980-04-15 1985-05-07 Mita Industrial Company Limited Electrostatic copying apparatus
US4544260A (en) * 1984-05-25 1985-10-01 Xerox Corporation Removable processing cartridge for electrostatographic reproducing apparatus
US4547064A (en) * 1984-08-31 1985-10-15 Xerox Corporation Electrostatographic reproducing apparatus
US4556308A (en) * 1984-05-25 1985-12-03 Xerox Corporation Removable processing cartridge for electrostatographic reproducing apparatus
US4589759A (en) * 1984-08-31 1986-05-20 Xerox Corporation Reproducing apparatus with optic scanning module
US4609280A (en) * 1983-10-31 1986-09-02 International Business Machines Corporation Xerographic apparatus and process with backside photoconductor imaging
US4616922A (en) * 1985-04-05 1986-10-14 Minnesota Mining And Manufacturing Company Electrophotographic copying apparatus and process
US4616919A (en) * 1985-09-05 1986-10-14 International Business Machines Corporation Non-contact developer seal
US4652114A (en) * 1985-04-05 1987-03-24 Minnesota Mining And Manufacturing Company Electrophotographic copying apparatus and process
US4736255A (en) * 1984-05-12 1988-04-05 Kabushiki Kaisha Toshiba Recording apparatus
US4746950A (en) * 1985-01-09 1988-05-24 Ricoh Company, Ltd. Color copier
US4792824A (en) * 1985-11-06 1988-12-20 Mita Industrial Co., Ltd. Electrostatic copying apparatus having reduced size and complexity
US4814822A (en) * 1987-06-08 1989-03-21 Xerox Corporation Method and apparatus for automatic "two-up" copying with intermediate latent image copiers
DE3837527A1 (de) * 1987-11-02 1989-05-18 Toshiba Kawasaki Kk Bilderzeugungsvorrichtung
DE4105262A1 (de) * 1990-02-20 1991-08-22 Ricoh Kk Bilderzeugungseinrichtung
US5229825A (en) * 1991-12-02 1993-07-20 Eastman Kodak Company Magnetic brush laydown/pickup apparatus
US5669044A (en) * 1995-06-07 1997-09-16 Nashua Corporation Article and method for dispensing toner and the like

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS62115017U (ja) * 1986-01-13 1987-07-22

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2874063A (en) * 1953-03-23 1959-02-17 Rca Corp Electrostatic printing
US2986442A (en) * 1956-07-19 1961-05-30 Century Geophysical Corp Electrophotographic oscillograph for observing slow recurrent signals
US2911330A (en) * 1958-04-11 1959-11-03 Haloid Xerox Inc Magnetic brush cleaning
US3580673A (en) * 1968-08-26 1971-05-25 Xerox Corp Cleaning apparatus
US3572923A (en) * 1968-08-26 1971-03-30 Xerox Corp Cleaning method and apparatus for electrostatic copying machines

Cited By (63)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4190464A (en) * 1971-06-03 1980-02-26 Canon Kabushiki Kaisha Method for cleaning a photoconductive surface with liquid toner
US4330199A (en) * 1972-04-13 1982-05-18 Canon Kabushiki Kaisha Electrophotographic device
US4185909A (en) * 1972-04-13 1980-01-29 Canon Kabushiki Kaisha Cleaning method and device for electrophotographic machine
DE2318839A1 (de) * 1972-04-13 1973-10-18 Canon Kk Elektrophotographische vorrichtung
DE2359792A1 (de) * 1972-11-30 1974-06-20 Mita Industrial Co Ltd Elektrostatische kopiervorrichtung
US4012138A (en) * 1972-11-30 1977-03-15 Mita Industrial Company, Ltd. Electrostatic photographic copying apparatus
JPS5054333A (ja) * 1973-09-10 1975-05-14
US3893416A (en) * 1973-12-27 1975-07-08 Xerox Corp Development and cleaning apparatus for reverse path machine
US4240723A (en) * 1974-05-20 1980-12-23 Elfotec A.G. Process for electrographic image production and an apparatus for carrying out this process
DE2424350A1 (de) * 1974-05-20 1975-11-27 Turlabor Ag Verfahren zur elektrographischen bilderzeugung und vorrichtung zur ausfuehrung des verfahrens
US4077711A (en) * 1974-05-28 1978-03-07 Ricoh Company, Ltd. Electrophotographic copying apparatus of wet developing type
US4086873A (en) * 1974-07-09 1978-05-02 Konishiroku Photo Industry Co., Ltd. Electrophotographic developing device incorporating a developing electrode having an insulation layer on its surface
US3982830A (en) * 1974-12-06 1976-09-28 International Business Machines Corporation Magnetic bead carryout reduction by altering the developer's bias voltage
US4087170A (en) * 1975-06-13 1978-05-02 Tokyo Shibaura Electric Co., Ltd. Electrostatic copying apparatus with combined charging transfer unit
FR2328993A1 (fr) * 1975-10-21 1977-05-20 Elfotec Ag Procede de reproduction electrophotographique d'une image
US4053218A (en) * 1975-11-10 1977-10-11 Xerox Corporation Development system
US4205912A (en) * 1975-11-11 1980-06-03 Tokyo Shibaura Electric Company Limited Electrophotographic apparatus
US4136942A (en) * 1975-11-25 1979-01-30 Canon Kabushiki Kaisha Electrophotographic apparatus
US4201465A (en) * 1975-11-26 1980-05-06 Ricoh Company, Ltd. Drum cleaning process and apparatus for electrophotography
US4185910A (en) * 1976-06-30 1980-01-29 Tokyo Shibaura Electric Co., Ltd. Photoconductive member cleaning device using a magnetic brush for electrostatic copying machines
JPS52141642A (en) * 1977-04-11 1977-11-26 Canon Inc Image forming device
JPS5646598B2 (ja) * 1977-04-11 1981-11-04
US4178095A (en) * 1978-04-10 1979-12-11 International Business Machines Corporation Abnormally low reflectance photoconductor sensing system
US4179213A (en) * 1978-04-10 1979-12-18 International Business Machines Corporation Vector pinning in an electrophotographic machine
US4183657A (en) * 1978-04-10 1980-01-15 International Business Machines Corporation Dynamic reference for an image quality control system
US4335955A (en) * 1978-04-24 1982-06-22 Ragen Precision Industries, Inc. Electrostatic display apparatus
US4332458A (en) * 1978-10-02 1982-06-01 Pitney Bowes Inc. Table top copy machine
JPS55575A (en) * 1979-04-14 1980-01-05 Canon Inc Image former
JPS562341B2 (ja) * 1979-04-14 1981-01-19
JPS5620545B2 (ja) * 1979-04-14 1981-05-14
JPS55577A (en) * 1979-04-14 1980-01-05 Canon Inc Image former
US4278342A (en) * 1979-09-04 1981-07-14 International Business Machines Corporation Xerographic charging
US4265998A (en) * 1979-11-13 1981-05-05 International Business Machines Corporation Electrophotographic photoreceptive background areas cleaned by backcharge process
JPS55120070A (en) * 1979-12-01 1980-09-16 Canon Inc Image forming device
US4304273A (en) * 1979-12-31 1981-12-08 International Business Machines Corporation Toner container and toner dispensing apparatus
US4515465A (en) * 1980-04-15 1985-05-07 Mita Industrial Company Limited Electrostatic copying apparatus
US4320958A (en) * 1980-10-27 1982-03-23 Xerox Corporation Combined processing unit
DE3206780A1 (de) * 1981-02-27 1982-12-09 Sharp K.K., Osaka Verfahren und einrichtung zum entwickeln und zur bildtraeger-reinigung in elektrophotographischen kopiergeraeten
US4754304A (en) * 1981-02-27 1988-06-28 Sharp Kabushiki Kaisha Drum cleaning in an electrophotographic copying machine
DE3211736A1 (de) * 1981-03-31 1982-11-11 Sharp K.K., Osaka Elektrophotographisches kopiergeraet
US4465360A (en) * 1981-03-31 1984-08-14 Sharp Kabushiki Kaisha Electrophotographic copying machine
US4415263A (en) * 1981-10-22 1983-11-15 Tetras S.A. Electrophotographic copier apparatus
US4487499A (en) * 1981-10-22 1984-12-11 Tetras, S.A. Synchronized document feed for electrophotographic imaging copier apparatus
US4488802A (en) * 1982-01-14 1984-12-18 Fuji Xerox Co., Ltd. Electrophotographic device with single stations serving multiple functions
US4500198A (en) * 1982-12-10 1985-02-19 International Business Machines Corporation Multiple roller magnetic brush developer having development electrode voltage switching
US4502778A (en) * 1982-12-27 1985-03-05 International Business Machines Corporation System for monitoring and controlling electrophotographic toner operation
US4609280A (en) * 1983-10-31 1986-09-02 International Business Machines Corporation Xerographic apparatus and process with backside photoconductor imaging
US4736255A (en) * 1984-05-12 1988-04-05 Kabushiki Kaisha Toshiba Recording apparatus
US4544260A (en) * 1984-05-25 1985-10-01 Xerox Corporation Removable processing cartridge for electrostatographic reproducing apparatus
US4556308A (en) * 1984-05-25 1985-12-03 Xerox Corporation Removable processing cartridge for electrostatographic reproducing apparatus
US4589759A (en) * 1984-08-31 1986-05-20 Xerox Corporation Reproducing apparatus with optic scanning module
US4547064A (en) * 1984-08-31 1985-10-15 Xerox Corporation Electrostatographic reproducing apparatus
US4746950A (en) * 1985-01-09 1988-05-24 Ricoh Company, Ltd. Color copier
US4616922A (en) * 1985-04-05 1986-10-14 Minnesota Mining And Manufacturing Company Electrophotographic copying apparatus and process
US4652114A (en) * 1985-04-05 1987-03-24 Minnesota Mining And Manufacturing Company Electrophotographic copying apparatus and process
US4616919A (en) * 1985-09-05 1986-10-14 International Business Machines Corporation Non-contact developer seal
US4792824A (en) * 1985-11-06 1988-12-20 Mita Industrial Co., Ltd. Electrostatic copying apparatus having reduced size and complexity
US4814822A (en) * 1987-06-08 1989-03-21 Xerox Corporation Method and apparatus for automatic "two-up" copying with intermediate latent image copiers
DE3837527A1 (de) * 1987-11-02 1989-05-18 Toshiba Kawasaki Kk Bilderzeugungsvorrichtung
DE4105262A1 (de) * 1990-02-20 1991-08-22 Ricoh Kk Bilderzeugungseinrichtung
US5182601A (en) * 1990-02-20 1993-01-26 Ricoh Company, Ltd. Image forming apparatus having toner handling units which are alternatively usable as a developing device or a cleaning device
US5229825A (en) * 1991-12-02 1993-07-20 Eastman Kodak Company Magnetic brush laydown/pickup apparatus
US5669044A (en) * 1995-06-07 1997-09-16 Nashua Corporation Article and method for dispensing toner and the like

Also Published As

Publication number Publication date
JPS5721706B1 (ja) 1982-05-08
BE775465A (fr) 1972-03-16
ES397448A1 (es) 1974-05-16
JPS6213663B2 (ja) 1987-03-27
FR2117089A5 (ja) 1972-07-21
JPS6055830B2 (ja) 1985-12-06
JPS58130369A (ja) 1983-08-03
US3647293A (en) 1972-03-07
AU3515171A (en) 1973-05-03
CA944012A (en) 1974-03-19
AU460880B2 (en) 1975-05-08
JPS57104166A (en) 1982-06-29
IT940700B (it) 1973-02-20

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Legal Events

Date Code Title Description
RR Request for reexamination filed

Effective date: 19830309

B1 Reexamination certificate first reexamination