Patent ID: 9658581
Date: 2017-05-23
CPC Classifications: G03G,H05B

Claim:
1. A heater comprising: a substrate; a first heat generating line provided on the substrate and in a longitudinal direction of the substrate, the first heat generating line being divided into a plurality of heat generating blocks in the longitudinal direction, the plurality of heat generating blocks being controllable independently; and a second heat generating line provided on the substrate and in the longitudinal direction of the substrate, the second heat generating line being divided into a plurality of heat generating blocks in the longitudinal direction, the plurality of heat generating blocks being controllable independently, wherein divided positions of the first heat generating line and divided positions of the second heat generating line are different in the longitudinal direction, and wherein the first heat generating line and the second heat generating line are each configured such that an electric current flows in a heating element of the heat generating blocks of the first heat generating line and a heating element of the heat generating blocks in the second heat generating line in a direction that intersects the longitudinal direction.