Printing device
US8643688B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 24, 2013 |
| Grant date | Feb 4, 2014 |
| Priority date | — |
| Expiry date | Jan 24, 2033 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J3/4075
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing device includes a casing, an upper cover, plural light sources, and a sensing module. The plural light sources are used for emitting plural light beams. The upper cover is connected with the casing, and rotatable relative the casing. The plural light sources are disposed on the upper cover, and arranged in a row. The sensing module is disposed under the plural light sources, and movable relative to the casing along a specified direction. After the light beams transmitted through a gap of the transfer paper are received by the sensing module, the gap is detected by the sensing module. The plural light beams emitted by the plural light sources can be projected onto any movable position of the sensing module. In other words, it is not necessary to align the sensing module and the plural light beams.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.