Linearization of an incremental printer by measurements referred to a media-independent sensor calibration
US7027185B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 30, 2001 |
| Grant date | Apr 11, 2006 |
| Priority date | — |
| Expiry date | Nov 12, 2023 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/6033
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A printing system is linearized automatically using measurements made with a simple optical sensor, such as a line sensor, that is onboard the system. The printing system itself is for forming images on plural printing media. Because the optical sensor is not a calorimeter or even a true densitometer, the sensor requires calibration, preferably based upon measurements using real inks. In the past it has been considered a requirement that such calibration be performed separately using each of the print media that was to be used for printing images. Linearization according to the invention, however, refers to a single calibration of the sensor, that calibration being used in common for essentially all media—even though the single calibration is performed with respect to exclusively a single one of the plural media.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.