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. 10, 1992
Filed:
Apr. 17, 1991
Masanori Matsuda, Tokyo, JP;
Takeshi Hori, Yokohama, JP;
Mita Industrial Co., Ltd., Osaka, JP;
Abstract
A developing process for supplying a developer to a support having an electrostatic latent image thereon by using a developer-delivering member having an electret layer and carrying out the development so that the effective fog-controlling field intensity ratio (A) defined by the following formula: ##EQU1## wherein E.sub.L represents the surface potential of the latent image area in the support having the electrostatic latent image area, E.sub.B represents the surface potential of the non-image are and E.sub.S represents the surface potential of the electret layer, is in the range of from 0.01 to 0.6. According to this process, an image having a high density with no fog can be formed without applying a developing bias voltage.