Method for detecting drops in printer device
US6752483B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 25, 2000 |
| Grant date | Jun 22, 2004 |
| Priority date | — |
| Expiry date | Apr 25, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04581
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An improved apparatus for checking a plurality of printer nozzles in a printer device comprises: a print head comprising a plurality of nozzles; a means for detecting at least one droplet of ink ejected from at least one nozzle of said plurality of nozzles; and a means for performing a sequence of measurements on a first output signal of said detecting means, wherein a determination of performance of said print head is made by analysing detected output signals produced by one or a plurality of ink droplets passing the detector, the one or plurality of ink droplets containing a predetermined minimum volume of ink, and said sequence of measurements being measured at a plurality of time intervals.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.