Patent · US Expired

Digital print head data registration

US6538681B2 · kind B2 · utility

4Cited by
5References
12Claims
0Family size

Assignee

Inventor

Key dates

Filing dateMay 3, 2001
Grant dateMar 25, 2003
Priority date—
Expiry dateAug 30, 2021

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG07B2017/0058
  • WIPO fieldControl
  • WIPO sectorInstruments

Abstract

Data identifying a print head of a postage meter is registered on the print head by allocating a number of printing elements of the print head to represent a code identifying the print head. The allocated printing elements are not used for printing postage indicia. The print head may be an ink jet print head having resistive elements energisable to eject ink droplets from nozzles. In order to represent the code, the resistance of selected ones of the resistive elements allocated to represent the code is altered for example by fusing the resistive elements.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.