JPS56140357A - Electrophotographic red toner - Google Patents

Electrophotographic red toner

Info

Publication number
JPS56140357A
JPS56140357A JP4444480A JP4444480A JPS56140357A JP S56140357 A JPS56140357 A JP S56140357A JP 4444480 A JP4444480 A JP 4444480A JP 4444480 A JP4444480 A JP 4444480A JP S56140357 A JPS56140357 A JP S56140357A
Authority
JP
Japan
Prior art keywords
red
toner
electrophotographic
styrene
copolymer
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
JP4444480A
Other languages
Japanese (ja)
Inventor
Satoru Inoue
Toru Oda
Fuyuhiko Matsumoto
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 JP4444480A priority Critical patent/JPS56140357A/en
Publication of JPS56140357A publication Critical patent/JPS56140357A/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
    • G03G9/09—Colouring agents for toner particles
    • G03G9/0906—Organic dyes
    • G03G9/091—Azo dyes

Abstract

PURPOSE:To obtain a red image from an original having a red part, a red seal or the like by using a toner contg. a copolymer of styrene and n-butyl methacrylate and a red pigment having an azo group. CONSTITUTION:Styrene and n-butyl methacrylate are copolymerized in about 6:4- 8:2 wt. ratio. This copolymer is kneaded with a 5-10wt% red dye having an azo group, e.g., the dye of the formula, and the kneaded material is pulverized to obtain a toner. Using this toner, a copy having a red image part with sufficient red density and high weather resistance is obtd. from an original having a red part by a dichromatic image forming method.
JP4444480A 1980-04-04 1980-04-04 Electrophotographic red toner Pending JPS56140357A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4444480A JPS56140357A (en) 1980-04-04 1980-04-04 Electrophotographic red toner

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4444480A JPS56140357A (en) 1980-04-04 1980-04-04 Electrophotographic red toner

Publications (1)

Publication Number Publication Date
JPS56140357A true JPS56140357A (en) 1981-11-02

Family

ID=12691655

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4444480A Pending JPS56140357A (en) 1980-04-04 1980-04-04 Electrophotographic red toner

Country Status (1)

Country Link
JP (1) JPS56140357A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100451A (en) * 1982-11-30 1984-06-09 Mita Ind Co Ltd One-component type red magnetic developer
FR2586696A1 (en) * 1985-08-29 1987-03-06 Ricoh Kk RED DYE FOR THE DEVELOPMENT OF LATENT ELECTROSTATIC IMAGES
JPS62138857A (en) * 1985-12-12 1987-06-22 Dainichi Color & Chem Mfg Co Ltd Coloring composition for recording image
JPH03122665A (en) * 1989-10-05 1991-05-24 Mita Ind Co Ltd Developer
JPH03125160A (en) * 1989-10-09 1991-05-28 Mita Ind Co Ltd Developer
JP2008176346A (en) * 2000-06-19 2008-07-31 Mitsubishi Chemicals Corp Toner for development of electrostatic image and method for producing the same

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59100451A (en) * 1982-11-30 1984-06-09 Mita Ind Co Ltd One-component type red magnetic developer
FR2586696A1 (en) * 1985-08-29 1987-03-06 Ricoh Kk RED DYE FOR THE DEVELOPMENT OF LATENT ELECTROSTATIC IMAGES
JPS62138857A (en) * 1985-12-12 1987-06-22 Dainichi Color & Chem Mfg Co Ltd Coloring composition for recording image
JPH0427547B2 (en) * 1985-12-12 1992-05-12 Dainichiseika Color Chem
JPH03122665A (en) * 1989-10-05 1991-05-24 Mita Ind Co Ltd Developer
JPH03125160A (en) * 1989-10-09 1991-05-28 Mita Ind Co Ltd Developer
JP2008176346A (en) * 2000-06-19 2008-07-31 Mitsubishi Chemicals Corp Toner for development of electrostatic image and method for producing the same

Similar Documents

Publication Publication Date Title
JPS542129A (en) Electrophotographic photoreceptor
JPS56140357A (en) Electrophotographic red toner
JPS5781271A (en) Toner for developing electrostatic charge image and its production
JPS5430043A (en) Copier acting as facsimile
JPS5337423A (en) Electrophotographic light sensitive material
JPS52113739A (en) Electrostatically developing toner
JPS5411737A (en) Photoreceptor for electrophotography
GB1473333A (en) Electrostatogrpahic printing machine
JPS5419748A (en) Photoconductive toners
JPS54155840A (en) Developing method in two color electrophotographic copier
JPS5412841A (en) Static charge developing toner
JPS52147444A (en) Electrostatic latent image development
JPS5424634A (en) Method of copying desired color alone from multichromatic originals
JPS52113738A (en) Electrostatically developing toner
JPS5277730A (en) Photoconductive light sensitive material
JPS5280839A (en) Electrophotographic toner
JPS53133442A (en) Electrophotographic method and apparatus
JPS5764251A (en) Charge type magnetic toner
JPS53118051A (en) Toner
JPS52150038A (en) Liquid development
JPS5538538A (en) Developing method in two color electrophotographic copying system
JPS5435723A (en) Diazo copying method
JPS53144737A (en) Electrophotographic method and device
JPS5271226A (en) Two component type diazo copying material
JPS5439635A (en) Photoreceptor for electrophotography