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
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Publication of US3647293B1 publication Critical patent/US3647293B1/en
Anticipated expiration legal-status Critical
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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)
  • Combination Of More Than One Step In Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Cleaning In Electrography (AREA)
  • Developing 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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
JP (3) JPS5721706B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
AU (1) AU460880B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
BE (1) BE775465A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
CA (1) CA944012A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
ES (1) ES397448A1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
FR (1) FR2117089A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)
IT (1) IT940700B (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html)

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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 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
US4185909A (en) * 1972-04-13 1980-01-29 Canon Kabushiki Kaisha Cleaning method and device for electrophotographic machine
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
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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 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
US3572923A (en) * 1968-08-26 1971-03-30 Xerox Corp Cleaning method and apparatus for electrostatic copying machines
US3580673A (en) * 1968-08-26 1971-05-25 Xerox Corp Cleaning apparatus

Cited By (60)

* 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
DE2318839A1 (de) * 1972-04-13 1973-10-18 Canon Kk Elektrophotographische vorrichtung
US4185909A (en) * 1972-04-13 1980-01-29 Canon Kabushiki Kaisha Cleaning method and device for electrophotographic machine
US4330199A (en) * 1972-04-13 1982-05-18 Canon Kabushiki Kaisha Electrophotographic device
US4012138A (en) * 1972-11-30 1977-03-15 Mita Industrial Company, Ltd. Electrostatic photographic copying apparatus
DE2359792A1 (de) * 1972-11-30 1974-06-20 Mita Industrial Co Ltd Elektrostatische kopiervorrichtung
JPS5054333A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * 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
US4240723A (en) * 1974-05-20 1980-12-23 Elfotec A.G. Process for electrographic image production and an apparatus for carrying out this process
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
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
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
US4465360A (en) * 1981-03-31 1984-08-14 Sharp Kabushiki Kaisha Electrophotographic copying machine
DE3211736A1 (de) * 1981-03-31 1982-11-11 Sharp K.K., Osaka Elektrophotographisches kopiergeraet
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
JPS6213663B2 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1987-03-27
JPS6055830B2 (ja) 1985-12-06
FR2117089A5 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1972-07-21
US3647293A (en) 1972-03-07
CA944012A (en) 1974-03-19
BE775465A (fr) 1972-03-16
ES397448A1 (es) 1974-05-16
JPS5721706B1 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) 1982-05-08
IT940700B (it) 1973-02-20
JPS57104166A (en) 1982-06-29
JPS58130369A (ja) 1983-08-03
AU3515171A (en) 1973-05-03
AU460880B2 (en) 1975-05-08

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Legal Events

Date Code Title Description
RR Request for reexamination filed

Effective date: 19830309

B1 Reexamination certificate first reexamination