HEATING DEVICE, AND IMAGE FORMING APPARATUS

• Main Authors: MICHIDA KAZUHIRO, YOSHIDA TSUGUHIRO, WAKATSU KOHEI
• Format: Patent
• Language: English; Japanese
• Published: 24.05.2024
• Subjects: CINEMATOGRAPHY; ELECTRIC HEATING; ELECTRIC LIGHTING NOT OTHERWISE PROVIDED FOR; ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR; ELECTRICITY; ELECTROGRAPHY; ELECTROPHOTOGRAPHY; HOLOGRAPHY; MAGNETOGRAPHY; PHOTOGRAPHY; PHYSICS

To solve the problem in which ratios of power supplied to respective heating elements are required to be controlled to be different power ratio from predetermined ratio depending on, e.g. sheet width in a longitudinal direction.SOLUTION: A heating device, when a first temperature is detected by second temperature detection means, takes the ratio of power supplied to a first heating element relative to a second heating element as a first value, and when a second temperature higher than the first temperature is detected by the second temperature detection means, takes the ratio of power supplied to the first heating element relative to the second heating element as a second value larger than the first value.SELECTED DRAWING: Figure 9 【課題】 それぞれの発熱体に投入する電力比は、例えば長手方向のシートの幅などによっては、予め定められた比とは異なる電力比となるように制御することも求められている。【解決手段】 前記第２の温度検知手段により第１の温度が検知された場合は、前記第２の発熱体に対する前記第１の発熱体の電力比を第１の値とし、前記第２の温度検知手段により前記第１の温度より高い第２の温度が検知された場合は、前記第２の発熱体に対する前記第１の発熱体の電力比を前記第１の値より大きい第２の値とする。【選択図】 図９