Screen printer with double doctor/squeegee, printing pressure sensor and aligning mechanism
US4893556A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 10, 1988 |
| Grant date | Jan 16, 1990 |
| Priority date | — |
| Expiry date | Feb 10, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2203/167
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A screen printing apparatus capable of uniformly applying a paste onto a screen to accomplish fining of a printed pattern and formation of a fined printed pattern. The apparatus includes a pair of laterally movable printing heads alternately actuated for printing and each including a doctor plate and a squeegee which are vertically movably arranged. The doctor plates of the printing heads being arranged laterally opposite to each other on the screen. The doctor plates each serve to apply a paste onto the screen while transferring the paste on the screen and the squeegees each act ot press the screen against a printed object after application of the paste onto the screen by the doctor plate corresponding thereto.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.