JPS5468246A - Electrostatographic developer - Google Patents

Electrostatographic developer

Info

Publication number
JPS5468246A
JPS5468246A JP13413277A JP13413277A JPS5468246A JP S5468246 A JPS5468246 A JP S5468246A JP 13413277 A JP13413277 A JP 13413277A JP 13413277 A JP13413277 A JP 13413277A JP S5468246 A JPS5468246 A JP S5468246A
Authority
JP
Japan
Prior art keywords
fine particles
fluorine resin
carrier
magnetic fine
magnetic
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
JP13413277A
Other languages
Japanese (ja)
Inventor
Itsuo Ikeda
Naoyuki Ushiyama
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 JP13413277A priority Critical patent/JPS5468246A/en
Publication of JPS5468246A publication Critical patent/JPS5468246A/en
Pending legal-status Critical Current

Links

Landscapes

  • Developing Agents For Electrophotography (AREA)

Abstract

PURPOSE: To reduce formation of toner films both on the surface holding latent images and on carrier particle surfaces by the developer to be used for a magnetic brush, by using the carrier prepared by binding magnetic fine particles with fluorine resin to agglomerates of fixed size.
CONSTITUTION: Fine particles of diameter 0.5W50μ, preferably ferromagnetic metals like Fe, Ni, Co, or the like are dispersed in a solution or dispersion of fluorine resin. This slurry is granulated to a desirable particle diameter of 50W500μ, e.g. by spray drying. The ratio of the fluorine resin to the magnetic fine particles is in the range of 35W70 : 100 by wt.. Whether the surfaces of the magnetic fine particles are coated perfectly or partially with the binder, is properly decided in accordance with the desired property of the carrier particles.
COPYRIGHT: (C)1979,JPO&Japio
JP13413277A 1977-11-10 1977-11-10 Electrostatographic developer Pending JPS5468246A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13413277A JPS5468246A (en) 1977-11-10 1977-11-10 Electrostatographic developer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13413277A JPS5468246A (en) 1977-11-10 1977-11-10 Electrostatographic developer

Publications (1)

Publication Number Publication Date
JPS5468246A true JPS5468246A (en) 1979-06-01

Family

ID=15121205

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13413277A Pending JPS5468246A (en) 1977-11-10 1977-11-10 Electrostatographic developer

Country Status (1)

Country Link
JP (1) JPS5468246A (en)

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5796357A (en) * 1980-12-08 1982-06-15 Ricoh Co Ltd Carrier for electrophotographic developer
JPS57130050A (en) * 1980-12-24 1982-08-12 Xerox Corp Developer composition and image formation
JPS57190957A (en) * 1981-05-20 1982-11-24 Nec Corp Electrophotographic developer
JPS58128442U (en) * 1982-02-24 1983-08-31 株式会社リコー Carrier for electrophotographic developer
US4614700A (en) * 1984-11-15 1986-09-30 Konishiroku Photo Industry Co., Ltd. Image forming process with magnetic brush development
JPS6330864A (en) * 1986-07-25 1988-02-09 Fuji Xerox Co Ltd Carrier for developer
JPS6358361A (en) * 1986-08-29 1988-03-14 Fuji Xerox Co Ltd Carrier for developer
JPS6358360A (en) * 1986-08-29 1988-03-14 Fuji Xerox Co Ltd Carrier for electrophotographic developer
JPS6462667A (en) * 1987-09-03 1989-03-09 Fuji Xerox Co Ltd Developer for electrophotography
US4912004A (en) * 1987-07-16 1990-03-27 Fuji Xerox Co., Ltd. Carrier for developer
JPH03122666A (en) * 1989-10-05 1991-05-24 Mita Ind Co Ltd Developer

Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6360383B2 (en) * 1980-12-08 1988-11-24
JPS5796357A (en) * 1980-12-08 1982-06-15 Ricoh Co Ltd Carrier for electrophotographic developer
JPS57130050A (en) * 1980-12-24 1982-08-12 Xerox Corp Developer composition and image formation
JPH0358108B2 (en) * 1980-12-24 1991-09-04 Xerox Corp
JPS57190957A (en) * 1981-05-20 1982-11-24 Nec Corp Electrophotographic developer
JPS58128442U (en) * 1982-02-24 1983-08-31 株式会社リコー Carrier for electrophotographic developer
US4614700A (en) * 1984-11-15 1986-09-30 Konishiroku Photo Industry Co., Ltd. Image forming process with magnetic brush development
JPS6330864A (en) * 1986-07-25 1988-02-09 Fuji Xerox Co Ltd Carrier for developer
JPS6358361A (en) * 1986-08-29 1988-03-14 Fuji Xerox Co Ltd Carrier for developer
JPS6358360A (en) * 1986-08-29 1988-03-14 Fuji Xerox Co Ltd Carrier for electrophotographic developer
US4912004A (en) * 1987-07-16 1990-03-27 Fuji Xerox Co., Ltd. Carrier for developer
JPS6462667A (en) * 1987-09-03 1989-03-09 Fuji Xerox Co Ltd Developer for electrophotography
JPH03122666A (en) * 1989-10-05 1991-05-24 Mita Ind Co Ltd Developer

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