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:
Feb. 10, 1987
Filed:
Nov. 28, 1984
Applicant:
Inventors:
Kiyoshi Maeda, Takatsuki, JP;
Tsutomu Ueyama, Shijonawate, JP;
Assignee:
Dainippon Screen Mfg. Co., Ltd., Kyoto, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04N / ; G01D / ;
U.S. Cl.
CPC ...
358296 ; 346108 ;
Abstract
A device for switching a scanning beam diameter, incorporated into a picture image scanning and recording device, which switches the diameter of the scanning beam in response to the density of number of scanning lines. The beam from a scanning light generator is branched at least into two optical paths and the diameter of at least one of the branched beams is magnified by a beam expander. The branched optical paths are unified again into a single path and, in order to pass the beam through one desired optical path a shutter device is provided.