DE69012987D1 - LIQUID DEVELOPMENT SYSTEMS WITH SELF-PRESERVING SCHÜTT CONDUCTIVITY. - Google Patents

LIQUID DEVELOPMENT SYSTEMS WITH SELF-PRESERVING SCHÜTT CONDUCTIVITY.

Info

Publication number
DE69012987D1
DE69012987D1 DE69012987T DE69012987T DE69012987D1 DE 69012987 D1 DE69012987 D1 DE 69012987D1 DE 69012987 T DE69012987 T DE 69012987T DE 69012987 T DE69012987 T DE 69012987T DE 69012987 D1 DE69012987 D1 DE 69012987D1
Authority
DE
Germany
Prior art keywords
schütt
preserving
conductivity
self
development systems
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 - Fee Related
Application number
DE69012987T
Other languages
German (de)
Other versions
DE69012987T2 (en
Inventor
Benzion Landa
Yaacov Almog
Amnon Peled
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.)
HP Indigo BV
Original Assignee
Indigo BV
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 Indigo BV filed Critical Indigo BV
Application granted granted Critical
Publication of DE69012987D1 publication Critical patent/DE69012987D1/en
Publication of DE69012987T2 publication Critical patent/DE69012987T2/en
Anticipated expiration legal-status Critical
Expired - Fee Related 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
    • G03G13/00—Electrographic processes using a charge pattern
    • G03G13/06—Developing
    • G03G13/10—Developing using a liquid developer, e.g. liquid suspension
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/12—Developers with toner particles in liquid developer mixtures
    • G03G9/135—Developers with toner particles in liquid developer mixtures characterised by stabiliser or charge-controlling agents
    • G03G9/1355—Ionic, organic compounds

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Liquid Developers In Electrophotography (AREA)
  • Wet Developing In Electrophotography (AREA)
DE69012987T 1989-03-06 1990-03-05 LIQUID DEVELOPMENT SYSTEMS WITH SELF-PRESERVING SCHÜTT CONDUCTIVITY. Expired - Fee Related DE69012987T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31912689A 1989-03-06 1989-03-06
PCT/NL1990/000025 WO1990010894A1 (en) 1989-03-06 1990-03-05 Liquid developer systems with self-replenishment of bulk conductivity

Publications (2)

Publication Number Publication Date
DE69012987D1 true DE69012987D1 (en) 1994-11-03
DE69012987T2 DE69012987T2 (en) 1995-05-04

Family

ID=23240964

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69012987T Expired - Fee Related DE69012987T2 (en) 1989-03-06 1990-03-05 LIQUID DEVELOPMENT SYSTEMS WITH SELF-PRESERVING SCHÜTT CONDUCTIVITY.

Country Status (5)

Country Link
EP (1) EP0462174B1 (en)
CA (1) CA2047675C (en)
DE (1) DE69012987T2 (en)
HK (1) HK137695A (en)
WO (1) WO1990010894A1 (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7070900B2 (en) 2003-09-30 2006-07-04 Samsung Electronics Company Adjuvants for positively charged toners
US7118842B2 (en) * 2003-09-30 2006-10-10 Samsung Electronics Company Charge adjuvant delivery system and methods
US7144671B2 (en) * 2003-09-30 2006-12-05 Samsung Electronics Company Adjuvants for negatively charged toners

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3669886A (en) * 1968-09-11 1972-06-13 Hunt Chem Corp Philip A Liquid developer for electrostatography
US4003500A (en) * 1970-12-31 1977-01-18 Hoechst Aktiengesellschaft Metering device
US4193683A (en) * 1978-08-21 1980-03-18 Langner Fred R Method and apparatus for filtering developing liquid in a photocopier
EP0259448B1 (en) * 1986-02-14 1994-01-19 Indigo N.V. Liquid developer charge director control
US4707429A (en) * 1986-04-30 1987-11-17 E. I. Du Pont De Nemours And Company Metallic soap as adjuvant for electrostatic liquid developer
DE3725002C2 (en) * 1986-07-28 1998-04-30 Ricoh Kk Development refill material for an electrostatic copier
US4656966A (en) * 1986-08-04 1987-04-14 Eastman Kodak Company Method and apparatus for developing electrographic images uses molecular sieve zeolite
US4785327A (en) * 1987-09-03 1988-11-15 Savin Corporation Pneumatic charge director dispensing apparatus
US4812382A (en) * 1987-12-17 1989-03-14 Eastman Kodak Company Electrostatographic toners and developers containing new charge-control agents
US4869991A (en) * 1988-03-24 1989-09-26 Olin Hunt Specialty Products Inc. Charge director composition for liquid toner formulations

Also Published As

Publication number Publication date
WO1990010894A1 (en) 1990-09-20
EP0462174B1 (en) 1994-09-28
HK137695A (en) 1995-09-08
DE69012987T2 (en) 1995-05-04
EP0462174A1 (en) 1991-12-27
CA2047675C (en) 1998-08-11
CA2047675A1 (en) 1990-09-07

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee