EP 0801335 B1 20010829 - Magnetic coated carrier, two-component type developer and developing method
Title (en)
Magnetic coated carrier, two-component type developer and developing method
Title (de)
Beschichtete magnetische Trägerteilchen, zwei-Komponententyp-Entwickler und Entwicklungsverfahren
Title (fr)
Particules de support magnétiques revêtues, révélateur du type à deux composants et procédé de développement
Publication
Application
Priority
JP 8524096 A 19960408
Abstract (en)
[origin: EP0801335A1] A magnetic coated carrier suitable for constituting a two-component type developer for use in electrophotography is composed of magnetic coated carrier particles comprising magnetic coated carrier particles comprising magnetic carrier core particles each comprising a binder resin and metal oxide particles, and a coating layer surface-coating each carrier core particle. The metal oxide particles have been subjected to a surface lipophilicity-imparting treatment. The magnetic carrier core particles have a resistivity of at least 1x10<10> ohm.cm, and the magnetic coated carrier has a resistivity of at least 1x10<12> ohm.cm. The magnetic coated carrier has a particle size distribution such that (i) it has a number-average particle size Dn of 5 - 100 mu m, (ii) it satisfies a relationship of Dn/ sigma >/= 3.5, wherein sigma denotes a standard deviation of number-basis particle size distribution of the carrier, and (iii) it contains at least 25 % by number of particles having particle sizes of at most Dn x 2/3. <IMAGE>
IPC 1-7
IPC 8 full level
G03G 9/08 (2006.01); G03G 9/10 (2006.01); G03G 9/107 (2006.01); G03G 9/113 (2006.01)
CPC (source: EP KR US)
G03G 9/08 (2013.01 - KR); G03G 9/0821 (2013.01 - EP); G03G 9/0827 (2013.01 - EP); G03G 9/1075 (2013.01 - EP KR US); G03G 9/108 (2020.08 - EP KR US); G03G 9/1085 (2020.08 - EP KR US); G03G 9/10882 (2020.08 - EP KR US); G03G 9/10884 (2020.08 - EP KR US); G03G 9/1132 (2013.01 - EP); G03G 9/1136 (2013.01 - EP)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
EP 0801335 A1 19971015; EP 0801335 B1 20010829; CN 1111761 C 20030618; CN 1168490 A 19971224; DE 69706353 D1 20011004; DE 69706353 T2 20020529; HK 1002876 A1 19980925; KR 100227586 B1 19991101; KR 970071156 A 19971107
DOCDB simple family (application)
EP 97302356 A 19970407; CN 97113424 A 19970408; DE 69706353 T 19970407; HK 98102013 A 19980311; KR 19970012850 A 19970408