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:
Aug. 18, 1992
Filed:
Aug. 13, 1991
Sung C Lee, Bridgeport, CT (US);
James N Crum, Stonington, CT (US);
MAN Roland Druckmaschinen AG, Offenbach-am-Main, DE;
Abstract
To rapidly and reliably remove foreign objects from rotating plate cylinders (10, 10'; 10a, 10a') of a printing machine, a carriage (12) is mounted on a keyboard (21) having keys associated with predetermined axial positions or zones on the plate cylinder, controls via a control unit (CU) rotation of the stepping motor to the respective axial zone which is selected by operation of one of the keys (20) of the keyboard. A solenoid then projects the wiper blade to remove a foreign object or hickey from the plate. In a multi-cylinder machine, the removal apparatus including the spindle, carriage, wiper blade and solenoid, is placed in association with each one of the cylinders, one keyboard and one control unit operating all the wiper blades in unison, thereby eliminating the need to determine on which one of the plate cylinders of, for example, a multi-color press, a foreign object has lodged. After removal of a foreign object, or a number of foreign objects, as counted by keyboard operation, the carriage is returned to a rest or cleaning position where a motor-operated brush, upon sensing the presence of the carriage, removes the objects from the blade.