The heating apparatus has a heating member and a pressure member which are
mutually pressure-welded to hold and convey and heat a heated member to
be heated by a nip portion formed between the heating member and the
pressure member, includes a temperature detector, power control means,
and a curl reduction mode for setting a paper conveyance interval
temperature which is the target temperature of the heating member set in
a paper conveyance interval which is a period from end of heating the
M-th member to be heated up to start of heating the M+1-th member to be
heated in continuous heating of N members to be heated or in a certain
period in the paper conveyance interval to a temperature higher than the
heating temperature of a member to be heated which is the target
temperature of the heating member when heating the M+1-th member to be
heated.