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. 12, 2009
Filed:
Oct. 11, 2005
Takao Ishiyama, Minamiashigara, JP;
Masanobu Ninomiya, Minamiashigara, JP;
Hiroshi Nakazawa, Minamiashigara, JP;
Takao Ishiyama, Minamiashigara, JP;
Masanobu Ninomiya, Minamiashigara, JP;
Hiroshi Nakazawa, Minamiashigara, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
The invention provides a color image forming method including charging, developing, transferring and fixing. The fixing includes thermally fixing a toner image to paper by using a heating body and a pressurizing member which is positioned opposite to the heating body via a film-like member. The color toner includes a toner particle containing a crystalline resin and a non-crystalline resin. When the color toner is subjected to dynamic viscoelasticity measurement employing a sine wave vibration method, a minimum value of the relaxation elasticity H in a relaxation spectrum obtained from frequency dispersion characteristics when a measurement frequency measured at 60 and 80° C. is 0.1 to 100 rad/sec and a measurement strain at a frequency of 6.28 rad/sec is 0.1 %, is in a range of about 10 to 900 Pa/cm. A relaxation time λ corresponding to the minimum value is in a range of about 1 to 10,000 sec.