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:
Sep. 25, 2001
Filed:
May. 06, 1999
Hitoshi Hirose, Hiroshima-ken, JP;
Yoshio Ueda, Hiroshima-ken, JP;
Masakazu Akatsuka, Hiroshima-ken, JP;
Norifumi Tasaka, Hiroshima-ken, JP;
Mitsubishi Heavy Industries, Ltd., Tokyo, JP;
Abstract
An apparatus for and a method of controlling a drag roller in a printing machine to move a web with no shift of a printing position and enhance the printing quality remarkably, even when the drag roller varies in diameter due to its temperature change. From a given temperature-rotational-speed table, a controlling unit obtains a rotational speed of the drag roller so as to adjust a circumferential speed of the drag roller, which speed corresponds to the current circumferential surface temperature checked by a temperature monitor unit. Then, a rotational speed changing unit changes the rotational speed of the drag roller to a value equivalent to the rotational speed obtained by the controlling unit.