GB1406292A - Image developint techniques - Google Patents

Image developint techniques

Info

Publication number
GB1406292A
GB1406292A GB4232272A GB4232272A GB1406292A GB 1406292 A GB1406292 A GB 1406292A GB 4232272 A GB4232272 A GB 4232272A GB 4232272 A GB4232272 A GB 4232272A GB 1406292 A GB1406292 A GB 1406292A
Authority
GB
United Kingdom
Prior art keywords
potential
electrode
toner
portions
conductive
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
GB4232272A
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 GB1406292A publication Critical patent/GB1406292A/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
    • 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
    • G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
    • G03G15/0812—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer regulating means, e.g. structure of doctor blade
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0602—Developer
    • G03G2215/0604—Developer solid type
    • G03G2215/0614—Developer solid type one-component
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00—Apparatus for electrophotographic processes
    • G03G2215/06—Developing structures, details
    • G03G2215/0634—Developing device
    • G03G2215/0636—Specific type of dry developer device
    • G03G2215/0641—Without separate supplying member (i.e. with developing housing sliding on donor member)

Landscapes

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

Abstract

1406292 Developing electrostatic latent images XEROX CORP 12 Sept 1972 [14 Sept 1971] 42322/72 Heading G2H Toner particles clinging to the surface of a moving member 20 are removed by a cascading mixture of carrier particles and toner particles, and by application of an electrostatic potential between the member and portions 101, 102 of an electrode 10; then as the cleaned portions of the member surface pass to being opposite further electrode portions 103-106 the potential is reversed, and the member surface receives toner in place of being stripped of it. The member 20 may be a donor member, which supplies toner to an image-bearing photo-conductive member 30, and must have an even coating of toner particles 124 to avoid uneven development. Alternatively the member 20 may itself be photo-conductive, and carry a latent electrostatic image which is developed. The member 20 may be a cylinder, a flat plate or an endless belt, and the electrode 10 may be divided into sections by insulation 107, be in the form of a grid of parallel wires, or be composed of glass or ceramic in one piece, with a resistivity of the order of 10<SP>12</SP> ohm-centimetres, or with a resistivity of the order of 10<SP>1</SP><SP>6</SP> ohmcentimetres and a thin outer coating of metal, carbon or conductive plastics material. Application of a uniform D.C. potential across such a one-piece electrode results in a varying potential along its length with respect to the fixed potential of the member 20.
GB4232272A 1971-09-14 1972-09-12 Image developint techniques Expired GB1406292A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00180426A US3818864A (en) 1971-09-14 1971-09-14 Image developing apparatus

Publications (1)

Publication Number Publication Date
GB1406292A true GB1406292A (en) 1975-09-17

Family

ID=22660418

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4232272A Expired GB1406292A (en) 1971-09-14 1972-09-12 Image developint techniques

Country Status (6)

Country Link
US (1) US3818864A (en)
JP (1) JPS4838735A (en)
CA (1) CA980181A (en)
DE (1) DE2239207A1 (en)
GB (1) GB1406292A (en)
NL (1) NL7212332A (en)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3908037A (en) * 1971-09-14 1975-09-23 Xerox Corp Image developing techniques
US3911865A (en) * 1973-03-30 1975-10-14 Xerox Corp Toner pickoff apparatus
US4052127A (en) * 1973-01-24 1977-10-04 Ricoh Co., Ltd. Developing system
GB1452149A (en) * 1973-01-24 1976-10-13 Ricoh Kk Electrophotographic developing apparatus
US3911861A (en) * 1973-12-03 1975-10-14 Addressograph Multigraph Programmable toner concentration control
US3996892A (en) * 1975-02-24 1976-12-14 Xerox Corporation Spatially programmable electrode-type roll for electrostatographic processors and the like
JPS5512962A (en) * 1978-07-14 1980-01-29 Ricoh Co Ltd Electrophotographic copy
CA1138723A (en) * 1978-07-28 1983-01-04 Tsutomu Toyono Developing method for developer transfer under electrical bias and apparatus therefor
US5044310A (en) * 1978-07-28 1991-09-03 Canon Kabushiki Kaisha Developing apparatus for non-magnetic developer
US5194359A (en) * 1978-07-28 1993-03-16 Canon Kabushiki Kaisha Developing method for one component developer
US4431296A (en) * 1981-04-27 1984-02-14 Konishiroku Photo Industry Co., Ltd. Developing method and apparatus therefor
US4535261A (en) * 1981-06-03 1985-08-13 Ckd Controls Limited Smallsize motor with reduction gear and clutch mechanism
US4558941A (en) * 1983-03-31 1985-12-17 Takefumi Nosaki Developing apparatus
JPS59181372A (en) * 1983-03-31 1984-10-15 Toshiba Corp Developing device

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3147147A (en) * 1961-06-05 1964-09-01 Xerox Corp Xerographic developing apparatus and electrode
GB1063203A (en) * 1962-10-02 1967-03-30 Australia Res Lab Method of and means for the transfer of images
US3412710A (en) * 1966-10-11 1968-11-26 Xerox Corp Cleanup electrode
US3411482A (en) * 1967-01-30 1968-11-19 Varian Associates Electrographic toner development employing a clean-up electrode structure for removing unwanted background
US3416494A (en) * 1967-12-26 1968-12-17 Xerox Corp Xerographic development electrode
US3601092A (en) * 1969-02-28 1971-08-24 Ricoh Kk Developing device for wet process electrophotography
US3638610A (en) * 1969-07-03 1972-02-01 Xerox Corp Development apparatus
US3696785A (en) * 1970-12-18 1972-10-10 Xerox Corp Development apparatus

Also Published As

Publication number Publication date
CA980181A (en) 1975-12-23
NL7212332A (en) 1973-03-16
JPS4838735A (en) 1973-06-07
DE2239207A1 (en) 1973-03-22
US3818864A (en) 1974-06-25

Similar Documents

Publication Publication Date Title
GB1406292A (en) Image developint techniques
GB1412350A (en) Electrographic development process
GB1385966A (en) Apparatus for electrostatic latent image development
GB1445671A (en) Transferring charged particles
GB1024983A (en) Improvements in and relating to photoconductive development donor
JPS57190957A (en) Electrophotographic developer
GB1381910A (en) Plural electrode development of electrostatic latent images
GB1349272A (en) Xerogrphic apparatus
JPS576856A (en) Developing method
JPS5529834A (en) Electrophotographic developing apparatus
GB1130452A (en) Development of electrostatic images
JPS5562469A (en) Electrostatic latent image developing method
GB1275822A (en) Method and apparatus for developing electrostatic images
GB1017681A (en) Improvements in xerography
GB1258738A (en)
GB1349579A (en) Xerographic developing method
GB1388434A (en) Charging of electrophotographic material
GB1381049A (en) Developing process and apparatus
JPS55143568A (en) Developing device
GB1484417A (en) Method and apparatus for developing an electrical image
JPS5511226A (en) Electrostatic latent image developing method
GB954052A (en) Electrostatographic methods and apparatus therefor
JPS557769A (en) Electrostatic latent image developing method
GB1248945A (en) Electrophotography
GB1214155A (en) Developing process of electrostatic latent image

Legal Events

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