Edge reading donor sensors for a thermal printer
US5266967A · kind A · utility
10Cited by
3References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 12, 1992 |
| Grant date | Nov 30, 1993 |
| Priority date | — |
| Expiry date | Aug 12, 2012 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J35/18
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal printer is provided with edge reading donor sensors that detect the presence of different color patches on the donor as the donor advances. The sensors detect the intrusion of a new color patch during the print cycle to stop the donor advance and properly position the donor relative to the receiver. The sensors are positioned alongside the thermal head and as near to the end of the print drum as possible. The sensors are thereby positioned as close to the heater line of the thermal head as possible preventing waste of donor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.