Apparatus for and method of controlling an image recording device
US6084627A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 9, 1997 |
| Grant date | Jul 4, 2000 |
| Priority date | — |
| Expiry date | Apr 9, 2017 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N2201/04794
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and method for controlling an image recording device. The apparatus includes an acousto-optic deflector that deflects a beam of light so as to write a sub-scan comprising a predetermined number of picture elements. The image recording device is arranged to write a plurality of sub-scans side by side in a substantially contiguous manner. The apparatus also includes a component that commences sub-scans, a start of sub-scan detector that detects when the light beam is directed towards a start of sub-scan position, and an end of sub-scan detector that detects when the beam of light is directed towards an end of sub-scan position. A timing logic controller generates a start reference signal representing a desired position for the start of a sub-scan. A controller compares an output of the start of sub-scan detector with respect to the start reference signal. The controller also adjusts a frequency range of a chirp applied to the acousto-optic deflector while keeping a start time of the chirp constant so as to cause an arrival time of the light beam at the start of sub-scan detector to coincide with the start reference signal. A picture element rate controller adjusts a rate…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.