GB1339905A - Removal of grit from dry electrostatographic developer - Google Patents

Removal of grit from dry electrostatographic developer

Info

Publication number
GB1339905A
GB1339905A GB6054270A GB6054270A GB1339905A GB 1339905 A GB1339905 A GB 1339905A GB 6054270 A GB6054270 A GB 6054270A GB 6054270 A GB6054270 A GB 6054270A GB 1339905 A GB1339905 A GB 1339905A
Authority
GB
United Kingdom
Prior art keywords
imaging
drum
web
grit
charged
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
GB6054270A
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.)
Xerox Corp
Original Assignee
Xerox 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 Xerox Corp filed Critical Xerox Corp
Publication of GB1339905A publication Critical patent/GB1339905A/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
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • 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
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0887—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity
    • G03G15/0891—Arrangements for conveying and conditioning developer in the developing unit, e.g. agitating, removing impurities or humidity for conveying or circulating developer, e.g. augers

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Cleaning In Electrography (AREA)
  • Dry Development In Electrophotography (AREA)

Abstract

1339905 Electro-photography XEROX CORP [21 Dec 1970 [30 Dec 1969] 60542/70 Heading G2H During cascade or magnetic brush development of a charge image on a photo-conductive surface/, using dry toner carrier developer carrier grit is selectively deposited on at least one adjacent non- imaging photo-conductive surface which is uniformly charged at a polarity opposite to that of the charge image. A shield is provided between the imaging and non-imaging surfaces (which may be integral or separate) during prior uniform charging and imagewise exposure to form the charge image. Each surface may be of a drum or web. A web may be uniformly charged on a feed roll before passage round a drum. After transfer of a developed image from a drum surface, the imaging and non-imaging surfaces are prepared for reuse by application of a reversed charge, brush cleaning and light exposure. After formation of a developed image and deposition of grit on a web containing both imaging and non- imaging surfaces, the latter are cut-off and discarded. A non-imaging web may be in the form of an endless belt. Fig.3 shows an integral drum having an imaging surface charged by device 21 and non-imaging surfaces charged by devices 31 and 31' before exposure, cascade development and brush cleaning, the surface being separated by shields 33 and 33'.
GB6054270A 1969-12-30 1970-12-21 Removal of grit from dry electrostatographic developer Expired GB1339905A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US88904969A 1969-12-30 1969-12-30

Publications (1)

Publication Number Publication Date
GB1339905A true GB1339905A (en) 1973-12-05

Family

ID=25394422

Family Applications (1)

Application Number Title Priority Date Filing Date
GB6054270A Expired GB1339905A (en) 1969-12-30 1970-12-21 Removal of grit from dry electrostatographic developer

Country Status (5)

Country Link
US (1) US3610749A (en)
JP (1) JPS4910262B1 (en)
CA (1) CA923541A (en)
DE (1) DE2064230A1 (en)
GB (1) GB1339905A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112773274A (en) * 2021-01-04 2021-05-11 美智纵横科技有限责任公司 Charging station and charging station control method

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5545912B2 (en) * 1972-08-21 1980-11-20
US3956108A (en) * 1973-07-30 1976-05-11 Xerox Corporation Anti-plugging device for automatic developability control systems
US4278342A (en) * 1979-09-04 1981-07-14 International Business Machines Corporation Xerographic charging
US4761668A (en) * 1986-09-29 1988-08-02 Xerox Corporation Highlight color printer

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2911330A (en) * 1958-04-11 1959-11-03 Haloid Xerox Inc Magnetic brush cleaning

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112773274A (en) * 2021-01-04 2021-05-11 美智纵横科技有限责任公司 Charging station and charging station control method

Also Published As

Publication number Publication date
US3610749A (en) 1971-10-05
CA923541A (en) 1973-03-27
DE2064230A1 (en) 1971-07-01
JPS4910262B1 (en) 1974-03-09

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees