JP2005234065A5 - - Google Patents

Claims (8)

Receiving means for receiving image information to be printed;
Image processing means for developing the received image information, and
An image forming means for forming an image before fixing on a transfer paper based on the developed image;
Fixing means for fixing an image on the transfer paper including a heater;
When the image information is received, the heater is raised to the first target temperature, and after the image development is finished, the heater is raised to the second target temperature (> first target temperature). and control means for starting up the heater to the third target temperature (> second target temperature),
The fixing unit includes a thin heating member incorporating the heater, and a pressure member pressed against the heating member, and the transfer unit is formed on a fixing nip formed by pressing both members against each other. While fixing the paper through the heat,
The image forming apparatus , wherein the control unit changes the first target temperature according to a temperature of the pressure member . Wherein, at least the pressure member image forming apparatus according to claim 1, wherein the changing the second target temperature depending on the temperature and the type of the transfer paper. It said control means, the image forming apparatus according to claim 1, wherein the changing the second target temperature in accordance with the waiting time in the first target temperature. Wherein, at least the transfer paper type and image forming apparatus according to claim 1, 2 or 3, wherein changing said third target temperature depending on the size. Wherein, during the launch of the heater temperature to the target temperature, sequentially measure the rate of temperature rise, according to claim 1, 2, characterized in that switching a conduction ratio to the heater on the basis of the measurement result 3. The image forming apparatus according to 3 or 4 . The control means determines the heater energization rate at the start after the standby time at the first target temperature with reference to the heater energization rate at the time of reaching the first target temperature. The image forming apparatus according to claim 5 . The control means determines a heater energization rate at the start after the standby time at the second target temperature with reference to the heater energization rate at the time of reaching the second target temperature. The image forming apparatus according to claim 5, wherein: Receiving means for receiving image information to be printed;
Image processing means for developing the received image information, and
An image forming means for forming an image before fixing on a transfer paper based on the developed image;
Fixing means for fixing an image on the transfer paper including a heater;
Control means for raising the heater to the fixing target temperature,
The control means determines a heater energization rate at the start of the subsequent startup with reference to the heater energization rate reached when waiting when a standby time occurs during the rise to the fixing target temperature. An image forming apparatus.