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. 17, 1979
Filed:
Jun. 02, 1977
Applicant:
Inventors:
Tadao Shima, Tokyo, JP;
Yoshino Kajiyama, Tokyo, JP;
Tadafumi Hoshiyama, Tokyo, JP;
Youichi Kadota, Tokyo, JP;
Assignee:
Nippon Electric Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B05D / ;
U.S. Cl.
CPC ...
427 39 ; 204164 ; 427 74 ;
Abstract
A target for an image pick-up tube employs a layer of lead monoxide P b O which exhibits substantially intrinsic conductivity. The surface region of the P b O layer is formed with a high energy level density effective to trap beam electrons landing thereon, while remaining in the intrinsically conductive state, by bombardment of the target surface with inert gas ions. Such a surface region effectively precludes injection of electrons into the target interior, and gives rise to improved resolution and dark current characteristics.