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:
Mar. 27, 1990
Filed:
Feb. 25, 1988
Noriyuki Shimano, Kyoto, JP;
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Abstract
Apparatus is provided for recording halftone dot images on a photosensitive material by emitting a light beam which is modulated in accordance with digital image data. In a screen pattern memory (23), screen pattern data provided with a value for each element area which is smaller than a light spot diameter of a light beam on a surface of a photosensitive material is stored. The level of a screen pattern signal obtained from the screen pattern data and that of an image signal obtained from digital image data are compared in a comparator (22). An intensity of the light beam is modulated according to a result of comparison in the comparator (22). Because the screen pattern signal is given as a high density signal, the light beam is modulated in each element area which is smaller than a light spot diameter.