GB1291944A - Electrophotographic copying apparatus - Google Patents

Electrophotographic copying apparatus

Info

Publication number
GB1291944A
GB1291944A GB7723/70A GB772370A GB1291944A GB 1291944 A GB1291944 A GB 1291944A GB 7723/70 A GB7723/70 A GB 7723/70A GB 772370 A GB772370 A GB 772370A GB 1291944 A GB1291944 A GB 1291944A
Authority
GB
United Kingdom
Prior art keywords
resistor
earthed
copying apparatus
electrophotographic copying
doctored
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.)
Expired
Application number
GB7723/70A
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.)
International Business Machines Corp
Original Assignee
International Business Machines 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
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB1291944A publication Critical patent/GB1291944A/en
Expired 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
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/065—Arrangements for controlling the potential of the developing electrode

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing For Electrophotography (AREA)
  • Dry Development In Electrophotography (AREA)
  • Magnetic Brush Developing In Electrophotography (AREA)

Abstract

1291944 Electro-photographic developing apparatus INTERNATIONAL BUSINESS MACHINES CORP 18 Feb 1970 [20 March 1969] 7723/70 Heading G2H An electrostatic latent image is developed using a developing electrode earthed through a resistor. The resistor may be variable and may have a damping capacitor in parallel therewith. As shown a steel cylinder 19 earthed through a resistor 35 rotates about magnets 18 to form a magnetic brush 23 which is doctored by a blade 25. Cascade or powder cloud development can alternatively be used.
GB7723/70A 1969-03-20 1970-02-18 Electrophotographic copying apparatus Expired GB1291944A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US80882369A 1969-03-20 1969-03-20

Publications (1)

Publication Number Publication Date
GB1291944A true GB1291944A (en) 1972-10-04

Family

ID=25199844

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7723/70A Expired GB1291944A (en) 1969-03-20 1970-02-18 Electrophotographic copying apparatus

Country Status (8)

Country Link
US (1) US3599605A (en)
JP (1) JPS4835501B1 (en)
BE (1) BE745695A (en)
CH (1) CH503297A (en)
DE (1) DE2010097C3 (en)
GB (1) GB1291944A (en)
NL (1) NL169376C (en)
SE (1) SE352457B (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3691993A (en) * 1970-11-23 1972-09-19 Ibm Apparatus for transferring developed image
US3696784A (en) * 1970-12-15 1972-10-10 Xerox Corp Xerographic development apparatus
JPS5124251B1 (en) * 1970-12-28 1976-07-22
JPS5021254B1 (en) * 1971-05-29 1975-07-22
BE785976A (en) * 1971-07-09 1973-01-08 Diagnostic Instr Inc PROCESS FOR INCREASING THE DENSITY OF IMAGES
US3719165A (en) * 1971-09-03 1973-03-06 Eastman Kodak Co Tuner concentration control apparatus
US3850662A (en) * 1971-09-10 1974-11-26 Kalle Ag Electrophotographic developing process and apparatus
US4040387A (en) * 1972-09-24 1977-08-09 Mita Industrial Co. Ltd. Electrostatic photographic copying apparatus
DE2403186C3 (en) * 1973-01-24 1985-11-21 Kabushiki Kaisha Ricoh, Tokio/Tokyo Developing device for an electrophotographic copier
US4052127A (en) * 1973-01-24 1977-10-04 Ricoh Co., Ltd. Developing system
US3889637A (en) * 1973-06-28 1975-06-17 Xerox Corp Self-biased development electrode and reproducing machine employing same
JPS5334050B2 (en) * 1973-08-27 1978-09-19
US3901189A (en) * 1974-01-28 1975-08-26 Xerox Corp Magnetic brush developing apparatus
JPS5296032A (en) * 1976-02-09 1977-08-12 Fuji Xerox Co Ltd Power source apparatus for developing electrode
JPS6044653B2 (en) * 1976-05-17 1985-10-04 株式会社リコー Developing bias automatic control method and device
DE2655158C2 (en) * 1976-12-06 1986-04-03 Hoechst Ag, 6230 Frankfurt Method and apparatus for developing an electrostatic latent image
US4565438A (en) * 1984-02-01 1986-01-21 Xerox Corporation Development system using electrically field dependent developer material
JPH0457079A (en) * 1990-06-27 1992-02-24 Minolta Camera Co Ltd Developing device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3166432A (en) * 1959-05-07 1965-01-19 Xerox Corp Image development
US3160091A (en) * 1959-05-14 1964-12-08 Xerox Corp High speed xeroprinter and method therefor
US3428025A (en) * 1966-12-27 1969-02-18 Xerox Corp Xerographic development apparatus

Also Published As

Publication number Publication date
CH503297A (en) 1971-02-15
BE745695A (en) 1970-07-16
NL7002172A (en) 1970-09-22
DE2010097B2 (en) 1978-02-16
US3599605A (en) 1971-08-17
NL169376C (en) 1982-07-01
DE2010097A1 (en) 1970-10-08
DE2010097C3 (en) 1979-09-06
JPS4835501B1 (en) 1973-10-29
NL169376B (en) 1982-02-01
SE352457B (en) 1972-12-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee