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. 02, 1989
Filed:
Aug. 02, 1988
Hermann Fischer, Augsburg, DE;
MAN Roland Druckmaschinen AG, Offenbach am Main, DE;
Abstract
To increase the operating speed of a printing machine in which sheets are fed from a make-ready table (5) to a printing system (P, G; 2, 3, 65, 63), sheets are fed to the make-ready table in a transport direction and a lateral force is applied to the sheets as they are being fed to the make-ready table, for example by inclined belts (6-9). A feed roller, operating at a rotationally non-uniform speed, accelerates sheets gripped between the feed roller (18) and a counter roller (32) and the accelerated sheets then impinge on front register stops (50; 59) on either a transfer cylinder (34) or the impression cylinder (60) itself, the transfer cylinder or the impression cylinder, respectively, being driven at rotational non-uniform speed, first slightly slower than the accelerated speed of the sheets to ensure gentle impingement on the front register stops of the transfer cylinder or the impression cylinder, and then, after being gripped, the respective cylinder accelerates to a speed which , for the transfer cylinder, will be the same as an associated impression cylinder or, for the impression cylinder itself, to the same speed as the cylinders of the printing system.