Method and apparatus for controlling tension in a web offset printing press
US6085956A · kind A · utility
8Cited by
23References
24Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 4, 1998 |
| Grant date | Jul 11, 2000 |
| Priority date | — |
| Expiry date | Aug 4, 2018 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB65H2513/10
- WIPO fieldHandling
- WIPO sectorMechanical engineering
Abstract
The inertial drag of idler rollers in a web-offset press with independently driven drive rollers is compensated by successively advancing downstream rollers during speed changes. This prevents low-tension conditions on the web and subsequent web breaks. Compensation is made for inertial coupling to the idler rollers through the web. Tension control is utilized to stabilize web position during startups and splices.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.