Method for manufacturing a printhead of ink jet printing apparatus
US6406835B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2000 |
| Grant date | Jun 18, 2002 |
| Priority date | — |
| Expiry date | Jun 21, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2002/14403
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method according to the invention comprises the following steps. At first, a first layer of film is coated over a micro-control apparatus having a plurality of ejecting elements. Next, a plurality of ink chambers, a plurality of ink channels, and a plurality of supporting cylinders are simultaneously formed in the first layer of film by photolithography. More specifically, the plurality of supporting cylinders is located within the plurality of ink channels. Thereafter, a layer of liquid medium is coated over the first layer of film. A photosensitive film is provided over the first layer of film, and then a plurality of ink orifices is formed therein at positions respectively corresponding to the plurality of ink chambers by photolithography. Finally, the micro-control apparatus is connected to a signal input means. Accordingly, a precision alignment of application between ink orifices and ink chambers in manufacturing a conventional printhead is not necessary so that the throughput and yield rate can be increased.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.