Dot printer and method for grey level recording with different bit-depth dimensions
US5604527A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Dec 28, 1993 |
| Grant date | Feb 18, 1997 |
| Priority date | — |
| Expiry date | Dec 28, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/4056
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A non-impact recording apparatus for recording grey level exposures, the recording apparatus includes one or more recording elements such as LEDs. Image data signals of a predetermined multibits per pixel bit-depth dimension are generated by a data source along with a signal representing the predetermined bit-depth dimension. An exposure clock counter counts exposure clock pulses and outputs a count signal in response to clock pulses. The count signal represents a count value. A comparator compares a multibits-per-pixel image data signal with the count signal from the counter and generates a signal. A current driver is responsive to the signal from the comparator and controls a recording duration. Counting in the counter is adjusted in accordance with the multibits per pixel bit-depth dimension of the image data signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.