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:
Aug. 05, 2008
Filed:
Jun. 20, 2003
Satoshi Ogawa, Nara, JP;
Masahiko Kubo, Nara, JP;
Tadayuki Sawai, Nara, JP;
Kouji Kida, Nara, JP;
Sharp Kabushiki Kaisha, Osaka, JP;
Abstract
An object of the invention is to provide a black toner that can satisfy further the requirement for low energy, high-speed and high performance, a color toner that can be used in an image forming apparatus provided with an oil-less fixation device, and a color toner including the black toner and the color toner. For the black toner, a polyester resin having an acid value of 7 to 20 mgKOH/g is used as the binding resin, and a carboxylic acid-modified paraffin wax having an acid value of 4 to 30 mgKOH/g is used as the wax. For the color toner, polyester resin having an acid value of 7 to 20 mgKOH/g is used as the binding resin, and a carboxylic acid-modified paraffin wax having an acid value of 6 to 25 mgKOH/g is used as the wax.