EP 1347342 B1 20110803 - Toner for electrophotography
Title (en)
Toner for electrophotography
Title (de)
Toner für die Elektrophotographie
Title (fr)
Toner électrophotographique
Publication
Application
Priority
JP 2002077856 A 20020320
Abstract (en)
[origin: EP1347342A1] The present invention aims to provide a safer toner having lower content of residual bisphenol A, which has been suspected of an endocrine disrupting chemical. <??>A toner for electrophotography which contains a coloring agent, and a binder resin, in which the binder resin is a polyol resin which is prepared by reacting a) an epoxy resin, b) a compound having one or more active hydrogen atoms which react with an epoxy group in molecules of the compound having one or more active hydrogen atoms, and c) a compound having two or more active hydrogen atoms which react with an epoxy group in molecules of the compound having two or more active hydrogen atoms, a weight concentration of unreacted bisphenol A in the toner is 1000 mu g/g or less, and the toner has an epoxy equivalent of 20000 or more.
IPC 8 full level
G03G 9/087 (2006.01)
CPC (source: EP)
G03G 9/08753 (2013.01); G03G 9/08759 (2013.01); G03G 9/08786 (2013.01); G03G 9/08791 (2013.01); G03G 9/08793 (2013.01); G03G 9/08795 (2013.01); G03G 9/08797 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PT RO SE SI SK TR
DOCDB simple family (publication)
EP 1347342 A1 20030924; EP 1347342 B1 20110803; AT E519143 T1 20110815; JP 2003280262 A 20031002; JP 3867900 B2 20070117
DOCDB simple family (application)
EP 03006072 A 20030319; AT 03006072 T 20030319; JP 2002077856 A 20020320