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:
Jul. 21, 1992
Filed:
Mar. 26, 1991
Hidetoshi Shinada, Kanagawa, JP;
Fuji Photo Film Co., Ltd., Kanagawa, JP;
Abstract
Disclosed herein is a method of mixing together a plurality of inputted high-frequency signals whose frequency intervals are equal to each other so as to input the thus-mixed high-frequency signals to a multi-frequency acousto-optic device for dividing incident laser beams with the density according to the amplitude of each of the inputted high-frequency signals and in the direction corresponding to the frequency of each inputted high-frequency signal so as to radiate the thus-divided laser beams therefrom. The high-frequency signals whose frequencies are free from being adjacent to each other are mixed together, and the thus-mixed high-frequency signals are further mixed into one, thereby inputting the mixture to the acousto-optic device. Since the frequencies of high-frequency signals to be mixed first are not adjacent from each other, third-order harmonic signals appear at positions where they are dispersed. It is therefore possible to suppress the influence of third-order harmonic distortion upon the density of an image to the utmost.