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:
Jul. 06, 1993
Filed:
May. 16, 1990
Itsuo Takanashi, Kamakura, JP;
Takashi Yamamura, Yokohama, JP;
Toshikatsu Ichito, Kawasaki, JP;
Hiroki Kitamura, Setagaya, JP;
Hiromichi Tai, Yokosuka, JP;
Victor Company of Japan, Yokohama, JP;
Abstract
An electric charge recording/reproducing apparatus for focusing an electromagnetic radiation ray containing a recording object information signal onto a photoconductive layer member (PCL) in an electric charge image recording medium (D) comprising a laminate of at least an electric charge retention layer, member (CHL), photoconductive layer member (PCL) and a first electrode (E) using an objective lens (318) which is driven and displaced in an optical axis direction by an actuator (ACT) of an automatic focusing system; and to integratedly connect and fix a moving electrode (Em) onto the objective lens (318), the moving electrode (Em) being intended to generate an electric field for positioning the electric charge image recording medium (D) in the electric field of a predetermined electric field intensity, towards the electrode in, the electric charge image recording medium (D). The electric charge image recording medium (D) composed of a laminate of at least a first electrode (E), a photoconductive layer member (PCL), an optical modulation layer member (PML) and an electric charge retention layer member (CHL), the electric charge recording medium comprising said electric charge retention layer member (CHL) provided with an electric charge image pattern for tracking control recorded and formed.