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:
Sep. 06, 2011
Filed:
Dec. 14, 2007
Hyo Shu, Mishima, JP;
Minoru Masuda, Numazu, JP;
Yasuaki Iwamoto, Numazu, JP;
Yasutada Shitara, Numazu, JP;
Hyo Shu, Mishima, JP;
Minoru Masuda, Numazu, JP;
Yasuaki Iwamoto, Numazu, JP;
Yasutada Shitara, Numazu, JP;
Ricoh Company Limited, Tokyo, JP;
Abstract
An image forming apparatus including a fixing device to fix a toner image on a recording medium including a heat roller and an oil applicator to apply a silicone oil to the heat roller, having a system speed of from 500 to 1700 mm/sec, and using a toner including a binder resin including a crystalline polyester resin and an amorphous polyester resin; a fatty acid amide compound; and a colorant, wherein a ratio (W/R) of a height (W) of a peak at a wavenumber of 1638 cm, specific to the fatty acid amide compound, to a height (R) of a peak at a wavenumber of 829 cm, specific to the amorphous polyester resin, is from 0.010 to 0.040 in an absorption spectrum obtained by an ATR method (total reflectance method) using a Fourier transform infrared (FT-IR) spectrophotometer.