Printing apparatus inker with end dams
US5003877A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 17, 1989 |
| Grant date | Apr 2, 1991 |
| Priority date | — |
| Expiry date | Apr 17, 2009 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F31/20
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printing apparatus comprising: a pair of ink rolls (1, 17) defining a nip (2) therebetween; a pair of dams (3, 3') provided in the nip and movable in the direction of the axes of the ink rolls; an ink supplying device having an ink pump (11) for supplying an ink (18) to the segment of said nip located between the dams; an ink recovery device for recovering excess quantities of the ink supplied to said nip; a washing liquid supplying device for supplying a washing liquid (22) to said ink supplying device and to said ink recovering device via said nip; and a lubricant supplying device for supplying a lubricating liquid (8) to the segments of said nip located outside said dams. In printing, the segment of the nip of the ink rolls (1, 17) between the dams (3, 3') is lubricated with the ink film and the segments of the nip of the ink rolls (1, 7) outside the dams are lubricated with the lubricating liquid. The ink or washing liquid remaining in the nip or in the ink circulation path can be forcibly and rapidly recovered and therefore the productive efficiency can be improved. Further, since the ink in the circulation path can be forcibly recovered, the ink will not be present in the i…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.