EP 0422892 A3 19910529 - DEVELOPER AND DEVELOPING PROCESS USING SAID DEVELOPER
Title (en)
DEVELOPER AND DEVELOPING PROCESS USING SAID DEVELOPER
Publication
Application
Priority
- JP 4951390 A 19900302
- JP 26224389 A 19891009
Abstract (en)
[origin: EP0422892A2] Disclosed is a two-component type developer comprising a toner having an electroconductivity lower than 3.5 x 10<-><1><0> S/cm, in which an amino group-containing silicone resin is used as the coating resin for a magnetic carrier. By using the amino group-containing silicone resin as the coating resin for the magnetic carrier, reduction of the image density caused by a lowly electroconductive toner is prevented, and even in a color developer for which a lowly electroconductive toner is used, a high-density image can be formed. According to a developing process using this developer, the development is possible even under a high bias voltage condition, and a high-quality image having a high density can be formed.
IPC 1-7
IPC 8 full level
G03G 9/08 (2006.01); G03G 9/09 (2006.01); G03G 9/113 (2006.01); G03G 15/09 (2006.01)
CPC (source: EP)
G03G 9/0823 (2013.01); G03G 9/1136 (2013.01)
Citation (search report)
- [A] US 4242434 A 19801230 - HIRAKURA KOJI [JP], et al
- [A] GB 2119108 A 19831109 - XEROX CORP
- [A] PATENT ABSTRACTS OF JAPAN vol. 12, no. 266 (P-735)(3113) 26 July 1988, & JP-A-63 50866 (MINOLTA CAMERA CO.,LTD.) 03 March 1988,
Designated contracting state (EPC)
CH DE ES FR GB LI NL
DOCDB simple family (publication)
EP 0422892 A2 19910417; EP 0422892 A3 19910529; EP 0422892 B1 19950215; DE 69016913 D1 19950323; DE 69016913 T2 19950608; ES 2071037 T3 19950616; JP 2648221 B2 19970827; JP H03200978 A 19910902
DOCDB simple family (application)
EP 90311048 A 19901009; DE 69016913 T 19901009; ES 90311048 T 19901009; JP 4951390 A 19900302