Temperature controlled system for printing press
US5611278A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 11, 1995 |
| Grant date | Mar 18, 1997 |
| Priority date | — |
| Expiry date | Oct 11, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41F31/002
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The system of the present invention controls the temperature of ink so as to enhance print quality. An ink roller has a circulation path therein. A circulation system circulates fluid, such as water, through the ink roller and through a heat exchanger. The heat exchanger is part of a refrigeration and heating system that selectively cools and heats the circulating water. The refrigeration and heating system uses a compressor, an expansion valve and the heat exchanger. To provide refrigeration, refrigerant fluid is circulated in the refrigeration and heating system through the expansion valve and to the heat exchanger. To provide heating, the expansion valve is bypassed by a conduit, wherein hot fluid from the compressor flows directly to the heat exchanger.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.