Thermal print head positioning device
US7929004B2 · kind B2 · utility
Assignees
Inventor
Key dates
| Filing date | Aug 4, 2009 |
| Grant date | Apr 19, 2011 |
| Priority date | — |
| Expiry date | Oct 15, 2029 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/32
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A thermal print head positioning device is disposed in a printing device having a CPU and comprises a thermal print head, a transmission set is made up by a transmission component and a shaft, a cam, an actuator comprising a rotating shaft, a checking plate comprising a plurality of indentations with different sizes, a sensing component, and a supporting frame. The cam and the checking plate are disposed on the shaft. The actuator is electrically connected to the CPU and utilized for actuating the transmission set. The sensing component is disposed on the checking plate and electrically connected to the CPU, and utilized for sensing the sizes of the indentations to make the CPU determine to accelerate or decelerate the actuator. The supporting frame is connected to the cam and the thermal print head, driven by rotation of the cam to make the thermal print head rise or descend.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.