Global Patent Index - EP 0360146 B1

EP 0360146 B1 19941109 - Carrier for electrostatic image development and method of preparing it.

Title (en)

Carrier for electrostatic image development and method of preparing it.

Title (de)

Trägerteilchen für Entwicklungsverfahren elektrostatischer Bilder und Herstellungsverfahren.

Title (fr)

Particules véhicules pour le développement d'images électrostatiques et procédé pour leur préparation.

Publication

EP 0360146 B1 19941109 (EN)

Application

EP 89116985 A 19890913

Priority

JP 23918088 A 19880922

Abstract (en)

[origin: EP0360146A2] A carrier for an electrostatic image development comprising magnetic material particles covered with resin particles is disclosed. The carrier is prepared by applying a repeated impact force at a material temperature within the range of from 50 to 110 DEG C to a mixture of magnetic material particles having a weight mean particle diameter of from 10 to 200 mu m and resin particles having a weight mean particle diameter of less than 1/200 of that of the magnetic material particles.

IPC 1-7

G03G 9/113

IPC 8 full level

G03G 9/097 (2006.01); G03G 9/113 (2006.01)

CPC (source: EP)

G03G 9/1131 (2013.01); G03G 9/1132 (2013.01)

Designated contracting state (EPC)

DE GB

DOCDB simple family (publication)

EP 0360146 A2 19900328; EP 0360146 A3 19900620; EP 0360146 B1 19941109; DE 68919313 D1 19941215; DE 68919313 T2 19950406; JP 2709943 B2 19980204; JP H0287167 A 19900328

DOCDB simple family (application)

EP 89116985 A 19890913; DE 68919313 T 19890913; JP 23918088 A 19880922