Print head protection device for inkjet printers
US9278531B1 · kind B1 · utility
4Cited by
6References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 12, 2014 |
| Grant date | Mar 8, 2016 |
| Priority date | — |
| Expiry date | Nov 12, 2034 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2203/011
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A print head protection device is used with an inkjet printer having a print head adapted for elevating. A roller is mounted upstream of the print heads and above the process path a predetermined distance. A cover on the roller outer surface contacts the sheet lead edge if sheet curl exceeds a set curl range. The cover will cause rotation of the roller by engaging the sheet. A rotary encoder is mounted for synchronous rotation with the roller. The rotary encoder generates a signal in response to rotation of the roller, raising the print head to preclude damage. Alternately, the sheet can be discarded.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.