CA2047675A1 - Liquid developer systems with self-replenishment of bulk conductivity - Google Patents

Liquid developer systems with self-replenishment of bulk conductivity

Info

Publication number
CA2047675A1
CA2047675A1 CA 2047675 CA2047675A CA2047675A1 CA 2047675 A1 CA2047675 A1 CA 2047675A1 CA 2047675 CA2047675 CA 2047675 CA 2047675 A CA2047675 A CA 2047675A CA 2047675 A1 CA2047675 A1 CA 2047675A1
Authority
CA
Canada
Prior art keywords
self
liquid developer
replenishment
bulk conductivity
carrier liquid
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.)
Granted
Application number
CA 2047675
Other languages
French (fr)
Other versions
CA2047675C (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
Individual
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 Individual filed Critical Individual
Publication of CA2047675A1 publication Critical patent/CA2047675A1/en
Application granted granted Critical
Publication of CA2047675C publication Critical patent/CA2047675C/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)

Abstract

A self-replenishing liquid developer system for an electrostatic imaging system including an insulating non-polar carrier li-quid. toner particles dispersed in the carrier liquid, at least one charge director compound having a limited solubility in the carrier liquid and dissolved therein at its saturation concentration and excess ofthe at least one charge director compound comprised in a solid phase and being in equilibrium contact with the carrier liquid.
CA002047675A 1989-03-06 1990-03-05 Liquid developer systems with self-replenishment of bulk conductivity Expired - Fee Related CA2047675C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US31912689A 1989-03-06 1989-03-06
US319,126 1989-03-06

Publications (2)

Publication Number Publication Date
CA2047675A1 true CA2047675A1 (en) 1990-09-07
CA2047675C CA2047675C (en) 1998-08-11

Family

ID=23240964

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002047675A Expired - Fee Related CA2047675C (en) 1989-03-06 1990-03-05 Liquid developer systems with self-replenishment of bulk 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
US7144671B2 (en) 2003-09-30 2006-12-05 Samsung Electronics Company Adjuvants for negatively charged toners
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

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
JPH0830921B2 (en) * 1986-02-14 1996-03-27 スペクトラム、サイエンセズ、ベーヴェー Control of liquid developer charge director
US4707429A (en) * 1986-04-30 1987-11-17 E. I. Du Pont De Nemours And Company Metallic soap as adjuvant for electrostatic liquid developer
GB2194644B (en) * 1986-07-28 1990-12-19 Ricoh Kk Electrostatic copying machine
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
DE69012987D1 (en) 1994-11-03
WO1990010894A1 (en) 1990-09-20
HK137695A (en) 1995-09-08
CA2047675C (en) 1998-08-11
EP0462174B1 (en) 1994-09-28
DE69012987T2 (en) 1995-05-04
EP0462174A1 (en) 1991-12-27

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed
MKLA Lapsed

Effective date: 20060306