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. 26, 2019
Filed:
Sep. 10, 2018
Fuji Xerox Co., Ltd., Tokyo, JP;
Takafumi Koide, Kanagawa, JP;
Masataka Kuribayashi, Kanagawa, JP;
Yusuke Fukuda, Kanagawa, JP;
Katsuyuki Kitajima, Kanagawa, JP;
Teppei Yawada, Kanagawa, JP;
Shota Oshima, Kanagawa, JP;
FUJI XEROX CO., LTD., Tokyo, JP;
Abstract
An image forming apparatus includes an image holding member, a developing device, and a supplying device including a storage unit and a transport unit, wherein the storage unit stores toner and includes a bag having a flexible material, the transport unit uses suction pressure to transport the toner from the storage unit and supplies to the developing device, the toner contains an amorphous polyester resin, toner particles of the toner have a weight average molecular weight Mw and a number average molecular weight Mn, the weight average molecular weight Mw is in a range of 25,000 to 60,000, a ratio Mw/Mn is in a range the range of 5 to 10, a ratio (P2/P1) of a peak height of an absorption peak of the toner particles at a wavenumber of 820 cm(P2) to a peak height of the absorption peak at a wavenumber of 720 cm(P1) is 0.4 or less, and a ratio (P3/P1) of a peak height of the absorption peak of the toner particles at a wavenumber of 1500 cm(P3) to the peak height of the absorption peak at the wavenumber of 720 cm(P1) is 0.6 or less.