Calibration station for a printhead adapted to compensate for the wavelength sensitivity of an image recording material
US6515693B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 29, 2000 |
| Grant date | Feb 4, 2003 |
| Priority date | — |
| Expiry date | Jun 29, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01S5/0683
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A calibration station (34) for a printhead (20) adapted to provide a beam of electromagnetic radiation from a variable electromagnetic energy source onto a sensitive radiation medium, the calibration station (34), incorporates a sensor (26) disposed for sensing the beam (16) provided by the printhead (20), wherein the sensor (26) provides an output sensor signal indicative of the sensed power of the beam (16). A control circuit is adapted to accept the output sensor signal from the sensor and adjusts the variable electromagnetic energy source. A filter is disposed in the path of the beam (16) between the printhead (20) and sensor (26), adapted to transmit to the sensor (26) a portion of incident electromagnetic radiation over a predefined range of wavelengths, dependent upon a measured response characteristic of the radiation-sensitive medium.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.