EP0423341A4 - Photoconductive toner and method of producing the same - Google Patents

Photoconductive toner and method of producing the same

Info

Publication number
EP0423341A4
EP0423341A4 EP19890913088 EP89913088A EP0423341A4 EP 0423341 A4 EP0423341 A4 EP 0423341A4 EP 19890913088 EP19890913088 EP 19890913088 EP 89913088 A EP89913088 A EP 89913088A EP 0423341 A4 EP0423341 A4 EP 0423341A4
Authority
EP
European Patent Office
Prior art keywords
toner
sensitivity
producing
same
photo
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.)
Withdrawn
Application number
EP19890913088
Other versions
EP0423341A1 (en
Inventor
Akiyoshi Urano
Yumiko Sano
Yoshinobu 1284 Higaimoto Oyodo-Cho Umetani
Seiji Kado
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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
Priority claimed from JP1095700A external-priority patent/JP2658003B2/en
Application filed by Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Publication of EP0423341A1 publication Critical patent/EP0423341A1/en
Publication of EP0423341A4 publication Critical patent/EP0423341A4/en
Withdrawn legal-status Critical Current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
    • G03G9/0926—Colouring agents for toner particles characterised by physical or chemical properties

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing Agents For Electrophotography (AREA)

Abstract

A photoconductive toner is obtained by dispersing a fine granular inorganic photoconductive material having a specific surface area of 8 to 20 m<2>/g in an amount of greater than 50 % by weight in a fixing resin. Therefore, photo-sensitivity is improved per a toner particle, the thin toner layer that is formed exhibits improved photo-sensitivity, and the toner exhibits good fluidity and charge characteristics making it possible to obtain vivid picture with excellent contrast.
EP19890913088 1989-04-14 1989-11-22 Photoconductive toner and method of producing the same Withdrawn EP0423341A4 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP95700/89 1989-04-14
JP1095700A JP2658003B2 (en) 1988-04-22 1989-04-14 Photoconductive toner and method for producing the same

Publications (2)

Publication Number Publication Date
EP0423341A1 EP0423341A1 (en) 1991-04-24
EP0423341A4 true EP0423341A4 (en) 1991-07-31

Family

ID=14144779

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19890913088 Withdrawn EP0423341A4 (en) 1989-04-14 1989-11-22 Photoconductive toner and method of producing the same

Country Status (1)

Country Link
EP (1) EP0423341A4 (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701389A (en) * 1985-07-11 1987-10-20 Mita Industrial Co., Ltd. Photoconductive toner

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4701389A (en) * 1985-07-11 1987-10-20 Mita Industrial Co., Ltd. Photoconductive toner

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO9013065A1 *

Also Published As

Publication number Publication date
EP0423341A1 (en) 1991-04-24

Similar Documents

Publication Publication Date Title
EP0296072B1 (en) Electrostatic magnetic carrier particles
EP0395026A3 (en) Magnetic developer, image forming method and image forming apparatus
JPS54155048A (en) Carrier material for electrophotographic development
JPS6442659A (en) Electrophotographic developer
ES460166A1 (en) Pressure-fixable toner powder with a thermoplastic polyethylene binder
CA2154091A1 (en) Magnetic toner compositions
JPS5785060A (en) Composite developer
EP0423341A4 (en) Photoconductive toner and method of producing the same
JPS5480752A (en) Production of electrostatic latent image developing toners
JPS5646271A (en) Developing method
GB1532976A (en) Photoconductive imaging member
JPS5381125A (en) Electrophotographic magnetic toner
CA2041910A1 (en) Toner and developer compositions with charge enhancing additives
JPS6462667A (en) Developer for electrophotography
JPS565559A (en) Magnetic toner
JPS57102666A (en) Electrostatic image developing toner
JPS5796353A (en) Two component system developer for magnetic brush development
JPS5555432A (en) Magnetic recording medium
JPS6410269A (en) Single-component developing method
JPS5482097A (en) Magnetic line of force distribution forming member
JPS64573A (en) Electrostatic latent image developing color toner
JPS57120944A (en) Electrophotographic carrier
CA2020039A1 (en) Toner for developing statically charged images and process for preparation thereof
JPS6415756A (en) Electrostatic charge image developing toner
JPS6491142A (en) Electrostatic image developing toner

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

17P Request for examination filed

Effective date: 19901214

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): CH DE FR GB LI

A4 Supplementary search report drawn up and despatched

Effective date: 19910606

AK Designated contracting states

Kind code of ref document: A4

Designated state(s): CH DE FR GB LI

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19930818

D17Q First examination report despatched (deleted)