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:
Apr. 25, 2000
Filed:
Jul. 08, 1998
Yasuo Yamamoto, Minami-Ashigara, JP;
Yutaka Kanai, Ashigarakami-gun, JP;
Taku Fukuhara, Ashigarakami-gun, JP;
Fuji Xerox Co., Ltd., Tokyo, JP;
Abstract
In image forming method comprising an exposure step of forming an electrostatic latent image and a developing step of developing the electrostatic latent image, a developer comprises a magnetic carrier and a toner; a developing curve of the developer at the time when the developer is used has a saturated characteristic, the developing curve being as expression of the relation between the amount of toner transferred to the latent image support member and contrast potential, the contrast potential being determined by the developing bias potential applied to the developer support member and the potential of an exposed portion of the latent image support member; a proportion of the toner in the developer is in a range from 5 to 10% by weight; a time constant of the developer is less than or equal to 40 msec; and the developing step comprises applying developing bias voltage to the developer support member such that an amount of the toner transferred to the latent image support member reaches a saturated range. An image forming device to which the above method is applied and an electrostatic latent image developer used in the above method and device are also provided.