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:
Jun. 01, 1982
Filed:
Sep. 23, 1980
Shuhei Furuichi, Kyoto, JP;
Kabushiki Kaisha Morita Seisakusho, Kyoto, JP;
Abstract
An automatic blackening degree adjustment system which includes the steps of making a fluorescent plate luminous by a residual dose of X-rays that have penetrated the person to be photographed and an X-ray film, converting the amount of luminescense into electric output, converting the relative feed speed of an X-ray film with respect to an X-ray beam into electric output and computing an electric output obtained from the conversion of amount of luminescense and the relative feed speed and feeding back a value obtained to a filament control circuit to thereby control the filament current of the X-ray machine whereby the tube voltage of the X-ray tube is kept constant so that the exposure is adjusted to an optimum amount with the X-ray wave length kept constant and resulting in X-ray photograph taken which have sufficient and uniform contrast in any part thereof.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile