Fuser for reproduction apparatus with minimized temperature droop
US5937231A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 20, 1998 |
| Grant date | Aug 10, 1999 |
| Priority date | — |
| Expiry date | Nov 20, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/2046
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
A fuser, for a reproduction apparatus, having at least one heated fuser roller operating at a setpoint temperature to permanently fix a marking particle image to a receiver member, and a mechanism for controlling temperature droop in the heated fuser roller. The temperature droop controlling mechanism includes a heat sink having a thermal mass selected to substantially match the heat take out rate for the nominal fuser operating process, the heat sink being movable to a position in operative contact with the heated fuser roller and a nonoperative position remote from heated fuser roller. A logic and control unit is provided for moving the heat sink from the nonoperative remote position to the operative position contacting heated fuser roller as soon as a reproduction apparatus job run is started to remove heat from the heated fuser roller thus lowering its surface temperature from the setpoint temperature. The logic and control unit then causes the fuser roller heating device to be turned on to bring the heated fuser roller surface temperature back up toward the setpoint temperature. Subsequently, when the first receiver member to be fused reaches the heated fuser roller, the logic…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.