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.

Date of Patent:
Aug. 19, 1980

Filed:

Sep. 15, 1978
Applicant:
Inventors:

Kei-Hsiung Yang, Schenectady, NY (US);

Lothar A Gruenke, Schenectady, NY (US);

Assignee:

General Electric Company, Schenectady, NY (US);

Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03G / ;
U.S. Cl.
CPC ...
2503152 ;
Abstract

A method and apparatus for ion-valve radiography allowing a multiplicity of copies to be made responsive to a single radiographic exposure. Radiation, differentially-absorbed by passage through an object to be studied, enters an exposure chamber having a foraminate film or mesh structure surrounded by a high pressure gas or radio-conductive liquid of a type which converts the impingent radiation into electrostatic charge. The chamber is bounded by a pair of electrodes establishing electric fields therein to cause a charge image of the object to form upon an insulating layer contained upon the mesh structure. After exposure, the charge-image-bearing member is moved to a printing chamber and a charge image is deposited upon an insulative material sheet by ion flow techniques, for subsequent development by xerographic techniques.


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Yang, Kei-Hsiung. (1980). Multi-copy ion-valve radiography (U.S. Patent No. 4218619). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/4218619

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