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. 22, 1986
Filed:
Feb. 21, 1984
Yoshio Ono, Kyoto, JP;
Abstract
A desired picture or pattern such as a wiring pattern may be recorded on a recording surface bearing a photosensitive material coated thereon by sweeping a light beam obtained from a light beam source and then scanning, with the thus-swept light beam, the recording surface. Sweep position pulse signals are obtained by branching out the thus-swept light beam and detecting same with a photosensor. The light beam output from the light beam source is modulated in accordance with the sweep position pulse signals. The levels of the sweep position pulse signals are changed to a predetermined constant level in accordance with the types of their corresponding picture signals, in other words, the sweep position pulse signals are attenuated where they correspond to picture-bearing portions of the picture or pattern or are amplified where they correspond to picture-free portions of the picture or pattern, so that the synchronization between the sweeping speed and the picture signal reading-out speed is ensured. The above method is useful for the fabrication of distortion-free printed circuits.