EP 1076266 A1 20010214 - Black toner
Title (en)
Black toner
Title (de)
Schwarzer Toner
Title (fr)
Révélateur noir
Publication
Application
Priority
- JP 22782699 A 19990811
- JP 2000131864 A 20000428
Abstract (en)
A black toner comprises a binder resin and black non-magnetic composite particles having an average particle diameter of 0.06 to 1.0 mu m and comprising: (a) hematite particles or iron oxide hydroxide particles as core particles; (b) a coating layer on the surface of said hematite particles or iron oxide hydroxide particles, comprising at least one organosilicon compound selected from: (1) organosilane compounds obtainable from alkoxysilane compounds, and (2) polysiloxanes or modified polysiloxanes; and (c) a carbon black coat which is provided on said coating layer in an amount of 26 to 55 parts by weight based on 100 parts by weight of said hematite particles or iron oxide hydroxide particles.
IPC 1-7
IPC 8 full level
C01G 49/02 (2006.01); C01G 49/06 (2006.01); G03G 9/083 (2006.01); G03G 9/09 (2006.01)
CPC (source: EP)
G03G 9/0838 (2013.01); G03G 9/0839 (2013.01); G03G 9/0902 (2013.01); G03G 9/0904 (2013.01)
Citation (search report)
- [A] EP 0453261 A1 19911023 - TODA KOGYO CORP [JP]
- [A] US 5324571 A 19940628 - KOYAMA NOBORU [JP], et al
- [A] EP 0582472 A1 19940209 - TODA KOGYO CORP [JP]
- [A] DATABASE WPI Section Ch Week 199020, Derwent World Patents Index; Class E05, AN 1990-152560, XP002149694
- [A] PATENT ABSTRACTS OF JAPAN vol. 5, no. 21 (P - 048) 7 February 1981 (1981-02-07)
Designated contracting state (EPC)
DE FR GB LU NL
DOCDB simple family (publication)
DOCDB simple family (application)
EP 00306818 A 20000810; JP 2000131864 A 20000428