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. 19, 1995
Filed:
May. 04, 1993
Thomas W Dobson, Keene, NH (US);
Bruce Lepisto, Keene, NH (US);
Edward E Freyenhagen, Keene, NH (US);
Markem Corporation, Keene, NH (US);
Abstract
A printing or marking apparatus comprises a movable marking member having at least one marking device thereon, and a stationary heating structure having at least one heating element for maintaining the marking device at an elevated temperature. At least a portion of the stationary heating structure can be exchanged, removed or modified in order to vary the amount of heat applied to the marking device. In a preferred embodiment, the removable portion comprises a tubular heat pipe which extends into a hollow marking roll, and the heat pipe may be provided in different sizes or in segments which can be added or removed as desired. The disclosed apparatus is of particular utility in connection with ink compositions of the type which are solid at normal room temperatures, and which are rendered liquid or flowable at elevated temperatures.