Image heating apparatus having first and second cooling fans cooling an end portion of a first rotatable member

An image heating apparatus comprising:

• a first rotatable member;
• a second rotatable member configured to form, with the first rotatable member, a nip for heating a toner image on a recording material while feeding the recording material;
• a first cooling fan configured to cool an end portion region of said first rotatable member on one end side, said first cooling fan being provided at a position opposing a first region which is a part of the end portion region;
• a second cooling fan configured to cool the end portion region of said first rotatable member on said one end side, said second cooling fan being provided at a position opposing a second region which is a part of the end portion region, said second region being adjacent to said first region with respect to the longitudinal direction and being closer to an end of said first rotatable member on said one end side than said first region;
• an air blowing port configured to send air from said first and second cooling fans toward said first rotatable member;
• a shutter member configured to change an opening width of said air blowing port;
• a shutter controller configured to control a position of said shutter member depending on a width size of the recording material heated in the nip;
• and
• a fan controller configured to independently control a flow amount of said first cooling fan and a flow amount of said second cooling fan depending on the width size of the recording material heated in the nip, in a state in which said shutter member is positioned by said shutter controller at a position depending on the width size of the recording material heated in the nip,
• wherein said fan controller controls the flow amount of said first and second cooling fans so that an airflow ratio of the flow amount of said first cooling fan to that of said second cooling fan is set to a first airflow ratio when the opening width of said air blowing port is a first width, and the airflow ratio of the flow amount of said first cooling fan to that of said second cooling fan is set to a second airflow ratio larger than the first airflow ratio when the opening width of said air blowing port is a second width wider than the second width.