JPS572045A - Liquid developer for electrostatic photography - Google Patents

Liquid developer for electrostatic photography

Info

Publication number
JPS572045A
JPS572045A JP7525480A JP7525480A JPS572045A JP S572045 A JPS572045 A JP S572045A JP 7525480 A JP7525480 A JP 7525480A JP 7525480 A JP7525480 A JP 7525480A JP S572045 A JPS572045 A JP S572045A
Authority
JP
Japan
Prior art keywords
developer
contg
dispersion
monomer
org
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.)
Pending
Application number
JP7525480A
Other languages
Japanese (ja)
Inventor
Yoji Ide
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co Ltd
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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP7525480A priority Critical patent/JPS572045A/en
Publication of JPS572045A publication Critical patent/JPS572045A/en
Pending 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
    • G03G9/00—Developers
    • G03G9/08—Developers with toner particles
    • G03G9/12—Developers with toner particles in liquid developer mixtures
    • G03G9/13—Developers with toner particles in liquid developer mixtures characterised by polymer components
    • G03G9/131—Developers with toner particles in liquid developer mixtures characterised by polymer components obtained by reactions only involving carbon-to-carbon unsaturated bonds
    • 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
    • G03G9/122—Developers with toner particles in liquid developer mixtures characterised by the colouring agents
    • 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
    • G03G9/13—Developers with toner particles in liquid developer mixtures characterised by polymer components

Abstract

PURPOSE:To obtain a developer causing no deterioration in the characteristcs and fit for a printing plate by reacting carbon black or an org. pigment with a polymerizable monomer contg. halogen, polymerizing the resulting monomer, and dispersing developer particles contg. the colored polymer in a highly insulating liq. carrier. CONSTITUTION:Carbon black or an org. pigment such as aniline black is reacted with a polymerizable monomer contg. halogen such as 2-chlorolauryl methacrylate in the presence of Friedel-Crafts catalyst, and this colored monomer is subjected to dispersion polymn. in a highly insulating hydrocarbon such as n-hexane or ''Isoper EG '' in the presence of a polymn. initiator. The resulting dispersion is diluted with an adequate amount of said solvent, and by adding a polarity inhibitor, etc. as required, a liq. developer is obtd. This developer has high shelf stability, causes no deterioration in the characteristics such as dispersion stability and fixability even after repeated use, and is fit for manufacturing an offset printing plate with superior sensitivity.
JP7525480A 1980-06-04 1980-06-04 Liquid developer for electrostatic photography Pending JPS572045A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7525480A JPS572045A (en) 1980-06-04 1980-06-04 Liquid developer for electrostatic photography

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7525480A JPS572045A (en) 1980-06-04 1980-06-04 Liquid developer for electrostatic photography

Publications (1)

Publication Number Publication Date
JPS572045A true JPS572045A (en) 1982-01-07

Family

ID=13570892

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7525480A Pending JPS572045A (en) 1980-06-04 1980-06-04 Liquid developer for electrostatic photography

Country Status (1)

Country Link
JP (1) JPS572045A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005105271A (en) * 2003-09-26 2005-04-21 Samsung Electronics Co Ltd Process for preparing self-dispersible coloring agent, ink composition, coating and toner composition containing the coloring agent

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005105271A (en) * 2003-09-26 2005-04-21 Samsung Electronics Co Ltd Process for preparing self-dispersible coloring agent, ink composition, coating and toner composition containing the coloring agent

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