Patent ID: 9098033
Filing Date: 2015-08-04
Classification: G03G,H05B

Abstract:
1. A heater used for an image heating device comprising: a substrate having lengthwise and widthwise dimensions; first and second electrodes provided on the substrate at the same end of the substrate in a lengthwise direction of the substrate; a first heat-generation line including a first electro-conductive element provided on the substrate along the lengthwise direction of the substrate, a second electro-conductive element provided on the substrate along the lengthwise direction of the substrate at a position different in a widthwise direction of the substrate from the first electro-conductive element, and a plurality of heat-generation resistors including positive resistance-temperature characteristics, and electrically connected in parallel between the first electro-conductive element and the second electro-conductive element; a second heat-generation line including a third electro-conductive element provided on the substrate along the lengthwise direction of the substrate, a fourth electro-conductive element provided on the substrate along the lengthwise direction of the substrate at a position different in the widthwise direction of the substrate from the third electro-conductive element, and a plurality of heat-generation resistors including positive resistance-temperature characteristics and electrically connected in parallel between the third electro-conductive element and the fourth electro-conductive element, and a fifth electro-conductive element provided on the substrate, wherein the second electro-conductive element and the third electro-conductive element are arranged between the first electro-conductive element and the fourth electro-conductive element in the widthwise direction of the substrate, wherein the fifth electro-conductive element is arranged between the second electro-conductive element and the third electro-conductive element in the widthwise direction of the substrate, wherein the first electrode is connected to the first electro-conductive element and the fourth electro-conductive element, wherein the second electrode is connected to the fifth electro-conductive element, wherein the second electro-conductive element and the third electro-conductive element are connected to the fifth electro-conductive element, and wherein the first heat-generation line and the second heat-generation line are provided along the lengthwise direction of the substrate at positions different in the widthwise direction of the substrate from each other, and the first heat-generation line and the second heat-generation line are electrically connected in parallel.