EP 0357042 A3 19911106 - COMPOSITION AND METHOD FOR DEVELOPING ELECTROSTATIC LATENT IMAGES
Title (en)
COMPOSITION AND METHOD FOR DEVELOPING ELECTROSTATIC LATENT IMAGES
Publication
Application
Priority
- JP 15297889 A 19890615
- JP 21381288 A 19880830
Abstract (en)
[origin: EP0357042A2] A composition for developing electrostatic latent images in electrographic printing or copying machinery is provided in which 10% to less than 40% by weight of a carrier having a mean particle diameter of from 10 to 35 mu m is blended with a magnetic toner comprising magnetic powder and a resin. Conventional charge control agents, especially metal complexes of azo dyes and Nigrosine dyes should be excluded from the magnetic toner.
IPC 1-7
IPC 8 full level
G03G 9/08 (2006.01); G03G 9/083 (2006.01); G03G 9/10 (2006.01)
CPC (source: EP US)
G03G 9/0819 (2013.01 - EP); G03G 9/083 (2013.01 - EP); G03G 9/0831 (2013.01 - EP); G03G 9/10 (2013.01 - EP US)
Citation (search report)
- [X] DE 3140639 A1 19820616 - RICOH KK [JP]
- [X] GB 2074745 A 19811104 - RICOH KK
- [Y] US 4675268 A 19870623 - KISHI KEN-ICHI [JP], et al
- [A] EP 0125606 A1 19841121 - MITA INDUSTRIAL CO LTD [JP]
- [A] PATENT ABSTRACTS OF JAPAN, vol. 13, no. 93 (P-838)[3441], 6th March 1989; & JP-A-63 276 065 (CASIO ELECTRONICS MFG CO., LTD) 14-11-1988
Designated contracting state (EPC)
AT BE DE FR GB IT NL
DOCDB simple family (publication)
EP 0357042 A2 19900307; EP 0357042 A3 19911106; EP 0357042 B1 19980325; AT E164459 T1 19980415; AU 4087289 A 19900308; AU 628074 B2 19920910; CA 1338398 C 19960618; DE 68928614 D1 19980430; DE 68928614 T2 19981022; DK 174456 B1 20030324; DK 428689 A 19900301; DK 428689 D0 19890830
DOCDB simple family (application)
EP 89116016 A 19890830; AT 89116016 T 19890830; AU 4087289 A 19890829; CA 609726 A 19890829; DE 68928614 T 19890830; DK 428689 A 19890830