Global Patent Index - EP 0807858 A1

EP 0807858 A1 19971119 - Developing agent and method of manufacturing the same

Title (en)

Developing agent and method of manufacturing the same

Title (de)

Entwickler und Verfahren zur Herstellung desselben

Title (fr)

Agent de développement et son procédé de fabrication

Publication

EP 0807858 A1 19971119 (EN)

Application

EP 97107882 A 19970514

Priority

JP 11925696 A 19960514

Abstract (en)

An electrophotographic developing agent excellent in off-set resistance, shelf life, fluidity and fixing properties is provided by adding a first wax having a low viscosity in the first step of preparing a binder resin mixture by polymerization and by adding a second wax having a viscosity higher than that of the first wax in the second step of melting and kneading the wax-added binder resin so as to permit these waxes to be dispersed sufficiently in the resultant toner. <IMAGE>

IPC 1-7

G03G 9/08; G03G 9/087

IPC 8 full level

G03G 9/08 (2006.01); G03G 9/087 (2006.01)

CPC (source: EP)

G03G 9/0806 (2013.01); G03G 9/081 (2013.01); G03G 9/08782 (2013.01)

Citation (search report)

  • [XA] US 5344737 A 19940906 - BERKES JOHN S [US], et al
  • [A] EP 0703505 A1 19960327 - MITA INDUSTRIAL CO LTD [JP]
  • [DXA] PATENT ABSTRACTS OF JAPAN vol. 017, no. 228 (P - 1531) 11 May 1993 (1993-05-11) & US 5292609 A 19940308 - YOSHIKAWA YUZABURO [JP], et al
  • [X] PATENT ABSTRACTS OF JAPAN vol. 007, no. 101 (P - 194) 28 April 1983 (1983-04-28)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 096, no. 008 30 August 1996 (1996-08-30)
  • [A] PATENT ABSTRACTS OF JAPAN vol. 006, no. 133 (P - 129) 20 July 1982 (1982-07-20)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 0807858 A1 19971119; CN 1170150 A 19980114; JP H09304966 A 19971128

DOCDB simple family (application)

EP 97107882 A 19970514; CN 97111161 A 19970514; JP 11925696 A 19960514