EP 0581257 A1 19940202 - Magnetic toner for development an image and a method of producing the same.

Title (en)

Magnetic toner for development an image and a method of producing the same.

Title (de)

Magnetischer Toner zur Entwicklung eines Bildes und Verfahren zur dessen Herstellung.

Title (fr)

Toner magnétique pour le développement d'images et procédé pour sa fabrication.

Publication

EP 0581257 A1 19940202 (EN)

Application

EP 93112029 A 19930728

Priority

JP 20219192 A 19920729
JP 20777392 A 19920804
JP 20777492 A 19920804
JP 30995692 A 19921119
JP 30995792 A 19921119

Abstract (en)

A magnetic toner for use in electrophotographic development which can be endowed with high performance by subjecting it to surface treatment with hot air in its dispersed state. The magnetic toner is used in an electrophotographic system including a development process in which an electrostatic latent image is formed by using a photoconductive drum having a stationary magnet therein, and thereafter the magnetic toner is sucked in a toner sump by magnetic force, whereby non-image area toner is recovered by an electrode roller, and the electrophotographic system including a recycle process of the residual toner. The magnetic toner is capable of realizing high-quality image development and stable recycle of residual toner by subjecting the magnetic toner to surface treatment with hot air. <IMAGE>

IPC 1-7

G03G 9/00; G03G 9/08

IPC 8 full level

G03G 9/08 (2006.01); G03G 9/083 (2006.01); G03G 9/097 (2006.01); G03G 15/00 (2006.01); G03G 15/09 (2006.01)

CPC (source: EP)

G03G 9/0815 (2013.01); G03G 9/0819 (2013.01); G03G 9/0821 (2013.01); G03G 9/083 (2013.01); G03G 9/0837 (2013.01); G03G 9/0839 (2013.01); G03G 9/09725 (2013.01); G03G 15/0921 (2013.01); G03G 15/751 (2013.01); G03G 2215/0621 (2013.01); G03G 2215/0639 (2013.01); G03G 2221/0005 (2013.01)

Citation (search report)

[A] DE 2825002 A1 19781221 - CANON KK
[A] DE 3809662 A1 19881006 - KONISHIROKU PHOTO IND [JP]
[A] EP 0488789 A1 19920603 - MITA INDUSTRIAL CO LTD [JP]
[A] US 4221554 A 19800909 - OGUCHI TOSHIHIKO, et al
[A] EP 0374851 A2 19900627 - KONISHIROKU PHOTO IND [JP]

Designated contracting state (EPC)

DE GB

DOCDB simple family (publication)

EP 0581257 A1 19940202; EP 0581257 B1 19981118; DE 69322138 D1 19981224; DE 69322138 T2 19990520

DOCDB simple family (application)

EP 93112029 A 19930728; DE 69322138 T 19930728