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GB1320279A - Development of electrostatic images - Google Patents

Development of electrostatic images

Info

Publication number
GB1320279A
GB1320279A GB5816271A GB5816271A GB1320279A GB 1320279 A GB1320279 A GB 1320279A GB 5816271 A GB5816271 A GB 5816271A GB 5816271 A GB5816271 A GB 5816271A GB 1320279 A GB1320279 A GB 1320279A
Authority
GB
United Kingdom
Prior art keywords
stream
electrode
particles
toner
carrier particles
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
GB5816271A
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 GB1320279A publication Critical patent/GB1320279A/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
    • G03G15/0801—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer for cascading
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2982—Particulate matter [e.g., sphere, flake, etc.]

Landscapes

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

Abstract

1320279 Electro-photographic developing apparatus INTERNATIONAL BUSINESS MACHINES CORP 15 Dec 1971 [21 Dec 1970] 58162/71 Heading G2H A stream of toner particles is cascaded over an electrostatic latent image surface while it is under the influence of a development electrode, and then a stream of carrier particles is cascaded over the surface while it is away from the influence of the electrode in order to remove toner from background areas. Each stream may comprise both toner and carrier particles. As shown, a bucket conveyer 54 drops toner and carrier particles down both sides of an earthed or biased electrode 51 so that an image bearing surface 12 encounters a first stream of particles at an area 5D under the influence of electrode 51, and encounters a second stream of particles at an area 52 remote from the electrode. The carrier particles are preferably spherical steel shot of 300-600 microns diameter coated with P.T.F.E.
GB5816271A 1970-12-21 1971-12-15 Development of electrostatic images Expired GB1320279A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US10022970A 1970-12-21 1970-12-21

Publications (1)

Publication Number Publication Date
GB1320279A true GB1320279A (en) 1973-06-13

Family

ID=22278723

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5816271A Expired GB1320279A (en) 1970-12-21 1971-12-15 Development of electrostatic images

Country Status (8)

Country Link
US (1) US3754962A (en)
JP (1) JPS5333854B1 (en)
BE (1) BE774411A (en)
CA (1) CA948043A (en)
DE (1) DE2159009C3 (en)
FR (1) FR2119322A5 (en)
GB (1) GB1320279A (en)
NL (1) NL7115811A (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3865612A (en) * 1971-04-13 1975-02-11 Rank Xerox Ltd Xerographic development method
DE2232010C3 (en) * 1972-06-30 1979-08-23 Hoechst Ag, 6000 Frankfurt Device with a conveyor system from an endless revolving belt
US3865080A (en) * 1973-01-17 1975-02-11 Xerox Corp Toner pickoff apparatus
US3911865A (en) * 1973-03-30 1975-10-14 Xerox Corp Toner pickoff apparatus
US3866574A (en) * 1973-02-15 1975-02-18 Xerox Corp Xerographic developing apparatus
US3881927A (en) * 1973-04-16 1975-05-06 Xerox Corp Half tone development process for touchdown system in electrostatic imaging
US3880119A (en) * 1973-12-20 1975-04-29 Xerox Corp Development apparatus
JPS5635162A (en) * 1979-08-31 1981-04-07 Konishiroku Photo Ind Co Ltd Electrostatic recorder
US4493882A (en) * 1982-11-29 1985-01-15 Canon Kabushiki Kaisha Image formation method and apparatus
US4769676A (en) * 1986-03-04 1988-09-06 Kabushiki Kaisha Toshiba Image forming apparatus including means for removing residual toner

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2735304A (en) * 1956-02-21 toppfb haw
US2959153A (en) * 1955-12-21 1960-11-08 Ibm Xerographic image developing apparatus
US2892446A (en) * 1956-10-30 1959-06-30 Rca Corp Apparatus for developing electrostatic image
US2911330A (en) * 1958-04-11 1959-11-03 Haloid Xerox Inc Magnetic brush cleaning
US3011471A (en) * 1960-11-02 1961-12-05 Julius C Tam Bookmark
US3146687A (en) * 1960-12-05 1964-09-01 Ibm Developing apparatus
GB1133462A (en) * 1964-12-28 1968-11-13 Rank Xerox Ltd Electrostatic image development
US3349676A (en) * 1965-04-02 1967-10-31 Xerox Corp Xerographic development electrode apparatus
US3347691A (en) * 1965-10-21 1967-10-17 Xerox Corp Xerographic development
US3412710A (en) * 1966-10-11 1968-11-26 Xerox Corp Cleanup electrode
US3589895A (en) * 1967-07-17 1971-06-29 Eastman Kodak Co Electrographic developing method suited for transfer electrophotography without cleaning
US3592675A (en) * 1967-10-09 1971-07-13 Azoplate Corp Method for developing latent electrostatic images
US3416494A (en) * 1967-12-26 1968-12-17 Xerox Corp Xerographic development electrode
US3651784A (en) * 1969-07-03 1972-03-28 Xerox Corp Low potential development electrode
US3611992A (en) * 1969-07-03 1971-10-12 Xerox Corp Cleanup electrode

Also Published As

Publication number Publication date
NL7115811A (en) 1972-06-23
DE2159009C3 (en) 1975-08-28
US3754962A (en) 1973-08-28
DE2159009A1 (en) 1972-06-29
DE2159009B2 (en) 1975-01-16
FR2119322A5 (en) 1972-08-04
BE774411A (en) 1972-02-14
JPS5333854B1 (en) 1978-09-18
CA948043A (en) 1974-05-28

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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