RAM SHUTTERS FOR OILING WIDTH CONTROL
Original Publication Date: 1992-Aug-31
Included in the Prior Art Database: 2004-Apr-06
Xerox Disclosure Journal
A method for controlling the width of a fuser oil applicator found in automatic xerographic copiers is disclosed. In Figure 1, one example of a fuser oil applicator, a donor brush release agent management (RAM) system, is shown. A heat and pressure fuser apparatus comprising a fuser roll 52 and pressure roll 54 are illustrated together with a RAM system 56. The fuser apparatus in Figure 1 comprises the heated fuser roll 52 which is composed of a core 58 having coated thereon a thin layer 60 of an elastomer. The fuser roll 52 is shown in a pressure contact arrangement with the backup or pressure roll 54. The pressure roll 54 comprises a metal core 64 with a layer 66 of a heat-resistant material. In this assembly, both the fuser roll 52 and the pressure roll 54 are mounted on bearings (not shown) which are biased so that the fuser roll 52 and pressure roll 54 are pressed against each other under sufficient pressure to form a nip 68. It is in this nip that the fusing or fixing action takes place. A final support 31 having toner images $0 thereon is moved through the nip 68 with the toner images contacting the heated fuser roll 52. The toner material forming the image 70 is prevented from offsetting to the surface of the fuser roll 52 by the application of a release agent material such as silicone oil 72 contained in sump 74.