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. 21, 2013
Filed:
Jan. 23, 2009
Franz Knopf, Buhl, DE;
Lukas Hahne, Allschwil, CH;
Thomas Litterst, Weil am Rhein, DE;
Illinois Tool Works, Inc., Glenview, IL (US);
Abstract
An impression roller for gravure printing for use with an electrostatic printing aid, including an axis member or a shaft, joined axially to a steel core, an electrical inner insulating layer extending radially around the core, an electrically semi-conductive outer layer adjoining the outside of the impression layer, and an electrically highly conductive conductor layer arranged between the two. The conductor layer is encapsulated in an electrically insulated exterior. The impression roller is provided with an electric or electronic encapsulated circuit electrically insulated from the outside and having two poles, which is of low resistance in normal operation when the electric current flows from its positive pole to its negative pole and is of high resistance when the flow direction is opposite. The inner pole and outer pole of the circuit are connected to the conductor layer by an inner and outer connection of the impression roller respectively.