EP 0878748 B1 20030219 - Oxidative age resistance of surface oxidized roller
Title (en)
Oxidative age resistance of surface oxidized roller
Title (de)
Oxidationsalterungsbeständige Walze mit oxidierter Oberfläche
Title (fr)
Rouleau à surface oxydée présentant une résistance au vieillessement relativement à l'oxidation
Publication
Application
Priority
- US 4644497 P 19970514
- US 97960097 A 19971126
Abstract (en)
[origin: EP0878748A1] An electrophotographic developer roller is made by casting urethane prepolymer mixed with a polybutadiene, a trifunctional curative, ferric chloride powder, and an antioxidant. After curing, the roller is baked, which oxidizes the outer surface. The oxidized surface layer is electrically resistive, which is desirable in a developer roller. An excellent developer roller is achieved at low production cost. The antioxidant provides stable electrical characteristics over extended time periods.
IPC 1-7
IPC 8 full level
F16C 13/00 (2006.01); G03G 15/08 (2006.01)
CPC (source: EP KR)
G03G 5/00 (2013.01 - KR); G03G 15/0818 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0878748 A1 19981118; EP 0878748 B1 20030219; CN 1204464 C 20050601; CN 1205456 A 19990120; DE 69811424 D1 20030327; DE 69811424 T2 20031218; JP H1195542 A 19990409; KR 100514056 B1 20060112; KR 19980087055 A 19981205; TW 416025 B 20001221
DOCDB simple family (application)
EP 98303801 A 19980514; CN 98114883 A 19980514; DE 69811424 T 19980514; JP 17047098 A 19980514; KR 19980017430 A 19980514; TW 87107477 A 19980804