The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 25, 2008
Filed:
May. 24, 2007
Tetsuya Ida, Mishima, JP;
Yasuhiro Ichikawa, Kawasaki, JP;
Wakashi Iida, Toride, JP;
Yojiro Hotta, Abiko, JP;
Kazuhiko Hayami, Toride, JP;
Hirohide Tanikawa, Sunto-gun, JP;
Tetsuya Ida, Mishima, JP;
Yasuhiro Ichikawa, Kawasaki, JP;
Wakashi Iida, Toride, JP;
Yojiro Hotta, Abiko, JP;
Kazuhiko Hayami, Toride, JP;
Hirohide Tanikawa, Sunto-gun, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
The present invention provides a yellow toner which is excellent in transparency of an image formed on an OHP sheet, excellent in color reproducibility even when a light-pressure fixing unit is employed, excellent in coloring power and charge property, and is reduced in occurrence of filming. The present invention also provides a yellow toner having excellent durability and capable of contributing to the simplification or miniaturization of the constitution of an image forming apparatus. The yellow toner of the invention comprises a binder resin and a colorant, the binder resin contains at least a polyester unit, and the toner in the powder state has a lightness L* satisfying the relationship of L*>87 and has a chromaticity b* satisfying the relationship of 106<b*<120.