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:
Jan. 15, 1980
Filed:
Feb. 17, 1978
Bert Cappel, Lammerspiel, DE;
Peter Mayer, Muhlheim, DE;
Burkhardt Wirz, Munich, DE;
Peter Decker, Munich, DE;
Roland Offsetmaschinenfabrik Faber & Schleicher AG, both of, DE;
Grapho Metronic Mess-und Regeltechnik GmbH & Co., both of, DE;
Abstract
An ink roller for a printing press having a cylindrical outer shell presenting a roller surface and having a control fluid-displacing core, a hollow cylindrical partition being interposed between the shell and the core to define inner and outer annular passageways connected in series having respective inlet and outlet openings. A source of cooling fluid is connected to the inlet opening so that a feed stream of cooling fluid flows longitudinally through the inner passage and turns around to form a cooling stream flowing in counterflow relation through the outer passage. The cylindrical partition is formed of conductive material so that heat absorbed at a given region of the roller surface by the cooling stream flows radially inwardly for absorption by the feed stream at substantially the same rate, so that the cooling stream has only minimum net gain or loss of heat; this tends to equalize the temperature along the length of the cooling stream and hence along the length of the roller surface. In the preferred embodiment of the invention the thermal conductivity of the cylindrical partition in the radial direction is so varied as a function of length that the rate of heat transfer radially through the partition from the cooling stream to the feed stream over each unit of length of the partition is substantially equal.