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:
May. 08, 1990
Filed:
Nov. 09, 1988
Applicant:
Inventor:
Koji Ishii, Fuchu, JP;
Assignee:
Ryobi Ltd., Hiroshima, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
B41F / ; B41F / ;
U.S. Cl.
CPC ...
101177 ; 101232 ; 101248 ;
Abstract
In a multi-color printing machine, any positional error of a image is corrected by a longitudinal image displacement correcting mechanism and/or a diagonal image adjusting mechanism. In the former mechanism, the phase of a paper-feed cylinder relative to an impression cylinder is changed by utilizing the principle of a helical gear. In the latter mechanism, the paper-feed cylinder is tilted or twisted relative to the impression cylinder.