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:
Apr. 21, 2009
Filed:
Dec. 20, 2005
Jörg-achim Fischer, Laboe, DE;
Jörg-Achim Fischer, Laboe, DE;
Heidelberger Druckmaschinen AG, Heidelberg, DE;
Abstract
In temperature-controlled printing plate exposers, it is possible for condensation of dampening solution or moisture to occur in a region of printing plates or laser apparatus. In this way, imaging of printing plates can be impaired and/or the laser apparatus can suffer damage resulting from corrosion. An apparatus detects the quantity of dampening solution on a measuring spot in an exposer for printing forms. The intention is for the ingress of condensation within a printing plate exposer to be detected more accurately. A measuring beam having a first intensity is reflected from the measuring spot and a measured signal is generated at a photoelectric conductor. Following evaporation of the dampening layer on the measuring spot, a reference signal is generated at a photoelectric converter by reflected radiation from the measuring spot. By comparing a measured signal and a reference signal, the dampening solution or moisture can be detected.