Scan line to scan line feedforward in an autofocus system of an imaging system
US6633024B2 · kind B2 · utility
1Cited by
6References
17Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 10, 2001 |
| Grant date | Oct 14, 2003 |
| Priority date | — |
| Expiry date | Jan 7, 2022 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03F7/24
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
The present invention provides an autofocus system for an imaging system, such as an external drum platesetter. The autofocus system automatically focuses each of a plurality of scan lines produced by an imaging system on a supply of recording material, and includes a control loop with scan line to scan line feedforward of a motor command waveform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.