Uniform media tensioning of print media during transport in laser printer
US5495276A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Apr 18, 1994 |
| Grant date | Feb 27, 1996 |
| Priority date | — |
| Expiry date | Apr 18, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G2215/00413
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
There is provided an arrangement within an electrophotographic printer that helps reduce deformation in the media by ensuring that the media remains under a constant tension. The arrangement uses a first roller for moving the media through the electrophotographic printer at a given linear velocity. A second roller, placed after the first roller, also moves the media through the electrophotographic printer. However, the second roller has a variable linear velocity, where the variable linear velocity having a maximum linear velocity that is greater than the first roller's linear velocity. Power is applied to the second roller through a clutch. When the maximum amount of power is being applied to the second roller, the clutch limits the variable linear velocity to that of the first roller's linear velocity. Thus, the clutch limits the variable velocity when the media is under a known tension, wherein the known tension is constant in the media while the media moves through the electrophotographic printer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.