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:
May. 31, 2005
Filed:
Sep. 23, 2002
Mitsuo Aoki, Numazu, JP;
Kumi Hasegawa, Numazu, JP;
Toshiaki Higaya, Kawasaki, JP;
Yasushi Koichi, Yamato, JP;
Yutaka Takahashi, Yokohama, JP;
Tadashi Kasai, Tokyo, JP;
Mitsuo Aoki, Numazu, JP;
Kumi Hasegawa, Numazu, JP;
Toshiaki Higaya, Kawasaki, JP;
Yasushi Koichi, Yamato, JP;
Yutaka Takahashi, Yokohama, JP;
Tadashi Kasai, Tokyo, JP;
Ricoh Company, Ltd., Tokyo, JP;
Abstract
An image forming method, comprising passing a toner image-bearing sheet through a nip defined between two rollers including a heater roller to fix the toner image on the sheet, wherein the toner image is formed from a toner comprising a binder resin, and a colorant, wherein the toner image before the passage through the nip has a toner volume Vand a toner image area S, wherein the toner image after the passage through the nip has a toner volume Vand a toner image area S, and wherein a volume change Vt and an area change St defined by the formulas shown below are 30% or less and 20% or less, respectively:(%)=()/(%)=()/Alternatively, the toner image before the passage through the nip has a surface roughness of 2.5 μm or less.