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. 08, 2007
Filed:
Oct. 28, 2004
Peter Schmitt, Würzburg, DE;
Peter Schmitt, Würzburg, DE;
KBA-Metronic AG, Veitschocheim, DE;
Abstract
A pulse generator which can be used for a printer, for example an ink jet printer, to provide adjustable pulses per unit displacement or speed has a linearly or rotatably displaceable first plate with a periodic pattern of different optical density or transmissivity or reflectivity juxtaposed with a second plate with another array of markings of different optical density transmissivity or reflectivity so that in an overlapping region a Moiré pattern or other interference pattern for beat pattern is provided. The latter is detected by an optical sensor which outputs electrical pulses. The two plates can be relatively displaced to change the pattern and hence the detected periodicity.