Method for improving image quality on plots
US6652064B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 20, 2001 |
| Grant date | Nov 25, 2003 |
| Priority date | — |
| Expiry date | Apr 20, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/17
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An inkjet printing device for printing plots comprises a printhead, which has a plurality of nozzles each nozzle having at least a working status and a failing status, a servicing unit capable of applying recovery functions to said plurality of nozzles, detection means for checking if a nozzles is in a working status or in a failing status, memory means and a plurality of functions executable by said device to improve image quality. Said memory means, responsive to said detection means, contains data on how the status of a nozzle is varying over time. Said device further comprises means to select and execute at least one of said plurality of functions, responsive to the data stored in said memory means. A method of improving image quality on plots produced by said device said method comprising the steps of: checking the status of one or more nozzles; storing in a memory support the status of a checked nozzle as detected during said checking step; and based on a plurality of said statuses stored over time in said memory support, performing an appropriate function form said variety for improving the image quality.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.