Patent ID: 6040558
Filing Date: 2000-03-21
Classification: G03G

Abstract:
An image heating apparatus comprising:a heater;a film sliding on said heater; anda back-up member for forming a nip with said heater via said film, said back-up member receiving a driving force to drive said film;wherein a recording material bearing an image thereon is pinched and conveyed in said nip whereby the image on said recording material is heated by the heat supplied from said heater via said film;said heater includes a first heat-generating member for generating heat by electric power supply thereto, and a second heat-generating member, provided at the downstream side of said first heat-generating member with respect to the moving direction of the recording material, for generating heat by electric power supply thereto; andwherein an amount of heat generation is substantially equivalent for said first and second heat-generating members when there is an absence of the recording material in said nip when electric power is supplied to said first and second heat-generating members, and the amount of heat generation of said first heat-generating member is larger than that of said second heat-generating member when there is a presence of the recording material in said nip.