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. 21, 1998
Filed:
Oct. 10, 1995
Kazuya Matsumoto, Tatsuno, JP;
Yukiaki Minamoto, Tatsuno, JP;
Jun Funazaki, Tatsuno, JP;
Michitsugu Arima, Tatsuno, JP;
Masashi Kitazawa, Tatsuno, JP;
Fumitaka Ozeki, Tatsuno, JP;
Shigeru Komiyama, Tatsuno, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
An electric charge generator for use in an apparatus for producing an electrostatic latent image includes a plurality of charge generation controlling devices, each charge generation controlling device including: an insulating substrate; a line electrode formed on the insulating substrate; a solid dielectric film formed on the surface of the line electrode; a finger electrode having a hole for generating an electric charge, the hole being formed in the central part of the finger electrode, the finger electrode being formed on the solid dielectric film; a solid insulating film having a hole for passing the electric charge, the hole being formed in the central part of the solid insulating film, the solid insulating film being formed on the finger electrode; and a screen electrode having a hole for ejecting the electric charge, the hole being formed in the central part of the screen electrode, the screen electrode being formed on the surface of the finger electrode via the solid insulating film; wherein the plurality of charge generation controlling devices are arranged on the insulating substrate so as to form the electric charge generator. The solid insulating film is formed of a multilayer solid insulating film including a surface-side layer made of an inorganic insulating film and a substrate-side layer made of an organic insulating film whereby the durability and the reliability are improved.