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. 02, 2000
Filed:
Feb. 07, 1997
Applicant:
Inventors:
Masayuki Hirano, Hamamatsu, JP;
Tomomi Katoh, Hamamatsu, JP;
Masami Kadonaga, Hamamatsu, JP;
Akio Kojima, Hamamatsu, JP;
Assignee:
Hamamatsu Photonics K.K., Hamamatsu, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H05F / ;
U.S. Cl.
CPC ...
361225 ; 361214 ;
Abstract
This invention relates to an electrostatic charger and discharger which can realize ozone-less, non-contact charging that can prevent the member to be charged or the member to be charge-removed from deteriorating upon irradiation of an electromagnetic wave. Each of the charger and discharger has an electric field forming system with a specific structure for efficiently forming an electric field that causes ions produced by an electromagnetic wave to become attached to the major surface of the member to be charged or the member to be charge-removed in a space.