EP 0703502 B1 20031029 - Positively-charging mono-component toner and developing method using same
Title (en)
Positively-charging mono-component toner and developing method using same
Title (de)
Positiv geladener Einkomponententoner und Entwicklungsverfahren unter seiner Verwendung
Title (fr)
Poudre de toner à chargement positif et procédé de développement l'utilisant
Publication
Application
Priority
- JP 17087894 A 19940722
- JP 21975594 A 19940914
Abstract (en)
[origin: EP0703502A1] A positively-charging mono-component non-magnetic toner contains at least a binder resin and a coloring agent, wherein the binder resin is a polyester resin having an acid value of 5 mgKOH/g or below, and the toner has the maximum positive charge of 30 mu C/g or below. And, a positively-charging mono-component toner contains at least a binder resin and a coloring agent, wherein the toner has a surface energy gamma s of 30 to 40 mN/m. A developing method using a positively-charging mono-component toner uses a toner having a surface energy gamma s of 30 to 40 mN/m as the positively-charging mono-component toner, and the toner for developing an electrostatic latent image has a total charge of 2 mu C/g or above, or a total charge charged to a opposite polarity when developing an electrostatic latent image is 20% or below of the absolute value of a total charge charged to a normal polarity.
IPC 1-7
IPC 8 full level
G03G 9/08 (2006.01); G03G 9/087 (2006.01)
CPC (source: EP)
G03G 9/0821 (2013.01); G03G 9/0823 (2013.01); G03G 9/08755 (2013.01); G03G 9/08782 (2013.01); G03G 9/0819 (2013.01)
Designated contracting state (EPC)
DE GB
DOCDB simple family (publication)
EP 0703502 A1 19960327; EP 0703502 B1 20031029; CN 1119706 C 20030827; CN 1129816 A 19960828; DE 69532023 D1 20031204; DE 69532023 T2 20050324
DOCDB simple family (application)
EP 95305134 A 19950721; CN 95115258 A 19950721; DE 69532023 T 19950721