Electrophotographic toner
AssigneeRicoh Printing Systems, Ltd.
InventorsShigenori Yaguchi, Ryuuichi Shimizu, Hiroshi Ueno
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Abstract
An electrophotographic toner for visualizing an electrostatic latent image formed by an electrophotographic process, an electrostatic printing process, an electrostatic recording process, etc., which is produced in consideration of the environment and safety. The electrophotographic toner includes a fixing resin and a colorant. The electrophotographic toner is a black toner using a titanium compound containing no carbon black as the colorant. The electrophotographic toner may be an electrophotographic two-component black toner using magnetic iron oxide containing no carbon black as the colorant.
Claims17
An electrophotographic toner comprising:
- a fixing resin;
- and
- a colorant;
- wherein said electrophotographic toner comprises a black toner using a titanium oxide having a Brunauer, Emmet and Teller (BET) specific surface area of not larger than 100 m2/g comprising no carbon black as said colorant, and
- wherein the titanium oxide exhibits oil absorption of not higher than 80 ml/100 g.
An electrophotographic toner comprising:
- a fixing resin;
- and
- a colorant,
- wherein said electrophotographic toner comprises a black toner using a titanium compound that exhibits oil absorption of not higher than 80 ml/100 g and has a Brunauer, Emmet and Teller (BET) specific surface area of not larger than 100 m2/g containing no carbon black as said colorant, and
- wherein said toner contains titanium dioxide as an external additive.
Dependencies are inferred from the claim text.