Device for parallel justification of print head relative to the platen
US6007263A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 20, 1998 |
| Grant date | Dec 28, 1999 |
| Priority date | — |
| Expiry date | Feb 20, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/02
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A print head 20 is placed upstanding on a chassis 25 through a protective member 26. A support shaft 28 to which a platen roller 21 is attached through a support member 27 is fixed at a lower end to the chassis 25. The support shaft 28 is fixed at an upper end to an upper attaching portion 25a of the chassis 25. A space restricting member 31 is provided to the upper attaching portion 25a so as to engage with an engaging lug 35 on the protective member 26 to restrict the upper ends of the print head 20 and the platen roller 21 at a predetermined space from each other. Thus, the upper ends of the print head 20 and the platen roller 21 are maintained at the predetermined space during printing to press the print head 20 and platen roller 21 against each other with a uniform pressure along their lengths. As a result, there is no difference in printing state between the upper and lower portions of the print head 20 and the platen roller 21, and uniform printing and improved print quality can be achieved.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.