EP 1253604 A4 20071212 - MAGNET ROLLER
Title (en)
MAGNET ROLLER
Title (de)
MAGNETWALZE
Title (fr)
GALET MAGN TIQUE
Publication
Application
Priority
- JP 0005939 W 20000901
- JP 2000000960 A 20000106
Abstract (en)
[origin: EP1253604A1] To provide a magnet roller having a high magnetic force at low cost even if magnetized in a relatively weak magnetic field, having a magnetic force (800 G or higher) sufficient for development even if a plurality of magnetic poles are provided in a main magnetic pole part, and having good resistance to oxidation. The magnet roller (1) of the present invention includes a body part (3) and a shaft part (2) supporting both ends of (3). A plurality of magnetic poles are provided in a magnetized manner in an outer peripheral face of (3), made up of a rare-earth bond magnet made of rare-earth magnetic powder having a composite phase of a hard magnetic phase and a soft magnetic phase both magnetically exchange-interacting with each other and having a coercive force (iHc) of 5 KOe or lower and a residual magnetic flux density (Br) of 5 KG or higher. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 15/09 (2006.01); H01F 7/02 (2006.01)
CPC (source: EP)
G03G 15/0921 (2013.01); H01F 7/0268 (2013.01)
Citation (search report)
- [A] EP 0921532 A1 19990609 - ALPS ELECTRIC CO LTD [JP], et al
- See references of WO 0152278A1
Designated contracting state (EPC)
DE FR GB IT NL
DOCDB simple family (publication)
EP 1253604 A1 20021030; EP 1253604 A4 20071212; WO 0152278 A1 20010719
DOCDB simple family (application)
EP 00956861 A 20000901; JP 0005939 W 20000901