EP 0945766 B1 20030514 - Black non-magnetic composite particles for black toner and black toner using the same
Title (en)
Black non-magnetic composite particles for black toner and black toner using the same
Title (de)
Schwarze nicht-magnetische zusammengesetzte Teilchen für schwarze Toner und schwarze Toner, worin sie eingesetzt werden
Title (fr)
Particules composites, non-magnétiques, noires pour révélateurs noirs et révélateurs noirs les comprenant
Publication
Application
Priority
JP 10013698 A 19980326
Abstract (en)
[origin: EP0945766A2] Black non-magnetic composite particles for a Black toner of the present invention comprising: (a) hematite and/or iron oxide hydroxide particles having an average particle diameter of from 0.055 to 0.95 mu m; (b) a coating on the surface of said hematite and/or iron oxide hydroxide particles, comprising at least one organosilicon compound selected from: (1) organosilane compounds obtainable by drying or heat-treating alkoxysilane compounds, (2) polysiloxanes or modified polysiloxanes, and (3) fluoroalkyl organosilane compounds obtainable by drying or heat-treating fluoroalkylsilane compounds; and (c) carbon black fine particles adhered on said coating, which have a particle diameter of from 0.002 to 0.05 mu m and which are present in an amount of from 1 to 25 parts by weight per 100 parts by weight of said hematite and/or iron oxide hydroxide particles.
IPC 1-7
IPC 8 full level
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)
Designated contracting state (EPC)
DE FR GB NL
DOCDB simple family (publication)
EP 0945766 A2 19990929; EP 0945766 A3 20000223; EP 0945766 B1 20030514; DE 69907795 D1 20030618; DE 69907795 T2 20040401
DOCDB simple family (application)
EP 99302317 A 19990325; DE 69907795 T 19990325