A heater for use in an image heating apparatus , comprising: a substrate ; a plurality of independently controllable heating blocks (302-1, 302-2, 302-3, BL1, BL2, BL3, BL4, BL5, BL6, BL7) arranged in a longitudinal direction of the substrate, characterized in that each of the plurality of independently controllable heating blocks including a first conductor disposed at a first position in a short side direction perpendicular to the longitudinal direction of the substrate on the substrate so as to extend in the longitudinal direction, a second conductor disposed at a second position different from the first position in the short side direction on the substrate so as to extend in the longitudinal direction, a heating element disposed at a position between the first conductor and the second conductor and electrically connected to the first conductor and second conductor, a plurality of the first conductor corresponding to the plurality of the independently controllable heating blocks are electrically connected as a common conductor, two of electrodes (E4-1, E4-2, E8-1, E8-2, E6a, E6b, E4a, E4b, E8a-1, E8a-2, E8b-1, E8b-2) for the common conductor are electrically connected to the common conductor, in the longitudinal direction, one of the two electrodes for the common conductor is disposed outside one end of a region where all the heating elements are provided and the other of the two electrodes for the common conductor is disposed outside the other end of the region where all the heating elements are provided, each of the plurality of independently controllable heating blocks includes an electrode (E1 - E7) for the second conductor, and in the longitudinal direction, at least one of plurality of the electrodes for the second conductors is disposed in the region where all the heating elements are provided a substrate ; a plurality of independently controllable heating blocks (302-1, 302-2, 302-3, BL1, BL2, BL3, BL4, BL5, BL6, BL7) arranged in a longitudinal direction of the substrate, characterized in that each of the plurality of independently controllable heating blocks including a first conductor disposed at a first position in a short side direction perpendicular to the longitudinal direction of the substrate on the substrate so as to extend in the longitudinal direction, a second conductor disposed at a second position different from the first position in the short side direction on the substrate so as to extend in the longitudinal direction, a heating element disposed at a position between the first conductor and the second conductor and electrically connected to the first conductor and second conductor, a plurality of the first conductor corresponding to the plurality of the independently controllable heating blocks are electrically connected as a common conductor, two of electrodes (E4-1, E4-2, E8-1, E8-2, E6a, E6b, E4a, E4b, E8a-1, E8a-2, E8b-1, E8b-2) for the common conductor are electrically connected to the common conductor, in the longitudinal direction, one of the two electrodes for the common conductor is disposed outside one end of a region where all the heating elements are provided and the other of the two electrodes for the common conductor is disposed outside the other end of the region where all the heating elements are provided, each of the plurality of independently controllable heating blocks includes an electrode (E1 - E7) for the second conductor, and in the longitudinal direction, at least one of plurality of the electrodes for the second conductors is disposed in the region where all the heating elements are provided <EOS>