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:
Jan. 31, 1978
Filed:
Apr. 19, 1976
Oki Electric Industry Co., Ltd., Tokyo, JA;
Abstract
Printed images having a half tone are realized in a printing system using a temperature sensitive paper. A thermal-head which is positioned close to the temperature sensitive paper is heated by an input electrical signal and the heated thermal-head changes the darkness of the temperature sensitive paper. The period of time that the thermal-head is heated is controlled by the input electrical signal and, thus, the temperature of the thermal-head is a function of the input electrical signal. The darkness or the concentration of images on the temperature sensitive paper can be changed according to the input electrical signal. Thus an image having a half tone is obtained on a temperature sensitive paper.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile