Doctor blade for wiping away excess printing ink from the surface of a printing form
US6305282A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Aug 20, 1999 |
| Grant date | Oct 23, 2001 |
| Priority date | — |
| Expiry date | Aug 20, 2019 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F9/1072
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A doctor blade for wiping excess printing ink off the surface of a printing form (10) has a front section in the form of a leaf (3) which interacts with the surface of the printing form (10). In order to avoid wear or damage to the printing form surface as a result of the contact pressure exerted by the leaf (3) on the printing form surface, the leaf (3) is provided with a coating (5) over the entire doctor blade length. The coating (5) consists of lubricant or contains lubricant particles (8). As a result of the significant reduction in friction between the leaf (3) and the printing form surface, not only is the wear on the printing form surface reduced, but the wear on the doctor blade is also reduced, and its service life is extended.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.