Thermal printhead and method of making the same
US6429887B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 13, 2001 |
| Grant date | Aug 6, 2002 |
| Priority date | — |
| Expiry date | Feb 13, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/335
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The thermal printhead according to the present invention includes an elongated rectangular substrate including an attaching surface and a non-attaching surface, and a heat sink plate attached to the attaching surface of the substrate. The non-attaching surface of the substrate is provided with a common electrode, a plurality of individual electrodes and a heating resistor. The heating resistor is covered with an insulating protective layer and an opaque conductive protective layer. The thermal printhead includes a positioning indicia. In the method of making the thermal printhead according to the present invention, an image of the positioning indicia is taken by an image pick-up device and imaged on a display of a monitor. Two reference lines are set on the display of the monitor. Positioning of the substrate relative to the heat sink plate is performed by moving the substrate so that the reference line of the positioning indicia coincides with the reference line on the display of the monitor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.