Patent ID: 7088935
Filing Date: 2006-08-08
Classification: G03G,H05B

Abstract:
1. A heater, comprising a first heating member and a second heating member pressing each other, wherein said heater heats a heated material by passing the heated material through a press region where the first heating member and the second heating member meet, said heater further comprising an external heating member rotating with the second heating member in contact with the second heating member and heating the second heating member so that the second heating member has a predetermined surface temperature; wherein a heating nip transit time taken for any given point on the second heating member in rotation to pass through a heating nip region where the second heating member contacts the external heating member is determined based on a material and thermal capacity of the external heating member, a power consumption in the heater while the heated material is passing through the press region, and a surface temperature of the external heating member while the heated material is passing through the press region.