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. 09, 1982
Filed:
Dec. 05, 1977
Applicant:
Inventors:
Kuo H Chang, Minneapolis, MN (US);
Tzuo-Chang Lee, Bloomington, MN (US);
Jacob W Lin, Bloomington, MN (US);
Assignee:
Honeywell Inc., Minneapolis, MN (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03G / ; G03G / ; B41M / ;
U.S. Cl.
CPC ...
430-2 ; 346 / ; 346151 ; 358344 ; 365 47 ; 365112 ; 427 541 ; 4274072 ; 430 67 ;
Abstract
This invention pertains to an improved technique of introducing an added insulative layer between the thermoplastic layer and the photoconductive layer of the thermoplastic photoconductive holographic recording medium. The added layer (pure PVK) is electrically insulating at temperatures used for thermal development to prevent decaying charge contrast during hologram development.