EP 0898206 A3 19990317 -
Publication
Application
Priority
- EP 98202689 A 19980808
- EP 97202551 A 19970820
Abstract (en)
[origin: EP0898206A2] A method for coating carrier particles for use in electrostatic developers is provided comprising the steps of : bringing the carrier particles to be coated in a vessel equipped with means for agitating the carrier particles, so that the carrier particles occupy less than 85 % by volume of the vessel, and the agitation of the carrier particles is described by a Froude number between 0.2 and 20, adding a solution containing between 6 and 60 % by weight with respect to the total volume of the solution of chemical compounds for coating the carrier particles in a solvent with a boiling point of A DEG C to the vessel at such a rate that, at any time, the solvent is present in an amount lower than 1.25 10<-4> ml per cm<2> of surface of the carrier particles to be coated , keeping the carrier particles in the vessel at a temperature of at most (A + 10) DEG C, and continuously evacuating the solvent. c
IPC 1-7
IPC 8 full level
G03G 9/113 (2006.01)
CPC (source: EP)
G03G 9/1131 (2013.01); G03G 9/1136 (2013.01)
Citation (search report)
- [DA] US 5102769 A 19920407 - CREATURA JOHN A [US]
- [DA] US 3947271 A 19760330 - MUNZEL HOWARD E, et al
- [DA] GB 2014876 A 19790905 - XEROX CORP
- [DA] US 5340677 A 19940823 - BABA YOSHINOBU [JP], et al
- [DA] US 3507686 A 19700421 - HAGENBACH ROBERT J
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 0898206 A2 19990224; EP 0898206 A3 19990317; EP 0898206 B1 20030219
DOCDB simple family (application)
EP 98202689 A 19980808