Franking machine incorporating an inkjet print head
US6390577B1 · kind B1 · utility
15Cited by
6References
5Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 2, 1995 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Sep 4, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG07B2017/00556
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A franking machine includes an inkjet print head including a row of nozzles operated selectively to print a postal mark on a mail item passing under the print head. Only consecutive first nozzles of the row of nozzles forming a subset of the set of available nozzles in the row are operated to print the postal mark. Other nozzles of the row of nozzles, different than the first nozzles, are operated when there is no mail item in front of the print head in order to purge the other nozzles in order to prevent them becoming clogged in time.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.