An image heating apparatus for heating an image formed on a recording material, comprising: an endless belt; a heater (300, 600, 700, 1300, 1500, 1600, 1700, 1800, 1900, 2000, 2400, 770) configured to be in contact with an inner surface of the endless belt, the heater including a substrate (305, 2010), a first conductor (301a, 301b, 601a, 601b, 701a, 701b, 1301a, 1301b, 1501, 1502, 1601, 1602, 1701, 1702, 1801, 1802, 1901, 1902, 2001, 2002) disposed at a first position on the substrate so as to extend in a longitudinal direction of the substrate, a second conductor (303, 603, 703, 1303, 1503, 1603, 1703, 1803, 1903, 2003) disposed at a second position on the substrate so as to extend in the longitudinal direction, the second position being different from the first position in a transverse direction of the substrate that is transverse to the longitudinal direction, and a heating element (302a, 302b, 602a, 602b, 702a, 702b, 1504, 1505, 1604, 1605, 1704, 1705, 1804, 1805, 1904, 1905, 2004, 2005) disposed between the first conductor and the second conductor and configured to generate heat by power supplied thereto via the first conductor and the second conductor; and electrical contacts (C1, C2, C3, C4) configured to be in contact with electrodes (E1, E2, E3, E4, E5, E6, E7, E8, E1, E12, E13, E14, E21, E22, E23, E24) of the heater to supply power to the heating element, wherein the heater has a plurality of independently controllable heating blocks (302-1, 302-2, 302-3, BL1, BL2, BL3, BL4, BL5, BL6, BL7) in the longitudinal direction, each of the plurality of independently controllable heating blocks including the first conductor, the second conductor, and the heating element, at least one of electrodes each corresponding to one of the plurality of heating blocks is disposed in an area where the heating element is located in the longitudinal direction on a second surface opposite to a first surface of the heater that comes into contact with the endless belt, and the electrical contacts are arranged so as to face the second surface of the heater, characterised in that the heating element has a positive temperature coefficient of resistance. an endless belt; a heater (300, 600, 700, 1300, 1500, 1600, 1700, 1800, 1900, 2000, 2400, 770) configured to be in contact with an inner surface of the endless belt, the heater including a substrate (305, 2010), a first conductor (301a, 301b, 601a, 601b, 701a, 701b, 1301a, 1301b, 1501, 1502, 1601, 1602, 1701, 1702, 1801, 1802, 1901, 1902, 2001, 2002) disposed at a first position on the substrate so as to extend in a longitudinal direction of the substrate, a second conductor (303, 603, 703, 1303, 1503, 1603, 1703, 1803, 1903, 2003) disposed at a second position on the substrate so as to extend in the longitudinal direction, the second position being different from the first position in a transverse direction of the substrate that is transverse to the longitudinal direction, and a heating element (302a, 302b, 602a, 602b, 702a, 702b, 1504, 1505, 1604, 1605, 1704, 1705, 1804, 1805, 1904, 1905, 2004, 2005) disposed between the first conductor and the second conductor and configured to generate heat by power supplied thereto via the first conductor and the second conductor; and electrical contacts (C1, C2, C3, C4) configured to be in contact with electrodes (E1, E2, E3, E4, E5, E6, E7, E8, E1, E12, E13, E14, E21, E22, E23, E24) of the heater to supply power to the heating element, wherein the heater has a plurality of independently controllable heating blocks (302-1, 302-2, 302-3, BL1, BL2, BL3, BL4, BL5, BL6, BL7) in the longitudinal direction, each of the plurality of independently controllable heating blocks including the first conductor, the second conductor, and the heating element, at least one of electrodes each corresponding to one of the plurality of heating blocks is disposed in an area where the heating element is located in the longitudinal direction on a second surface opposite to a first surface of the heater that comes into contact with the endless belt, and the electrical contacts are arranged so as to face the second surface of the heater, characterised in that the heating element has a positive temperature coefficient of resistance.