Ink-jet image forming device
US6409301B1 · kind B1 · utility
16Cited by
2References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 28, 1999 |
| Grant date | Jun 25, 2002 |
| Priority date | — |
| Expiry date | Sep 28, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink-jet image forming device such that the test pattern detecting accuracy is improved with a single photodetector. A binarizing circuit (16) which binarizes the output of a sensor for a test pattern includes a peak hold circuit (82) which follows slow change in the sensor output, a voltage dividing circuit (83) which divides the held output, and a comparator (84) which converts the sensor output into a bi-level signal by using the output of the circuit (83) as a threshold.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.