摘要:
An image forming apparatus includes a fixing portion, a temperature detection portion, a power supply portion, a control portion, a photovoltaic module and a power storage/supply portion which stores power from the photovoltaic module and which performs power supply to the temperature detection portion when power supply from the power supply portion to the temperature detection portion is stopped. The control portion detects, when a return condition is satisfied, the temperature of the fixing portion based on the output of the temperature detection portion, and as a temperature on return is higher, the control portion starts fixing return processing at later timing whereas as the temperature on return is lower, the control portion starts the fixing return processing at earlier timing.
摘要:
A control section (101) includes a first power control section (81) (a first power control mode) and a second power control section (82) (a second power control mode). The first power control section (81) is for controlling an setting value of electric power to be supplied to a heater lamp (64) based on the temperature of a heating roller (61). The second power control section (82) is for controlling the setting value of electric power to be supplied to the heater lamp (64) in order to forced-drive the heater lamp (64) by an electric power that is higher than the setting value of electric power. Switching control means (84) performs switching between the first power control mode and the second power control mode depending on a status of operation of each of components forming an image forming apparatus (100).
摘要:
An image forming apparatus includes a fixing unit and a fixing process managing system. The fixing process managing system, including a mode switchover unit, controls a time mode and a temperature mode for heating a fixing member. In the time mode, the fixing unit is determined to be ready for a fixing process when a given time elapses after activation of the image forming apparatus. In the temperature mode, the fixing unit is determined to be ready for a fixing process when a temperature of the fixing member attains a given reference temperature after activation of the image forming apparatus. The mode switchover unit selects between the temperature mode and the time mode. The fixing process managing system selects the temperature mode instead of the time mode when a supply amount of electrical power to the fixing unit is determined to be below a required electrical power supply level.
摘要:
A control section (101) includes a first power control section (81) (a first power control mode) and a second power control section (82) (a second power control mode). The first power control section (81) is for controlling an setting value of electric power to be supplied to a heater lamp (64) based on the temperature of a heating roller (61). The second power control section (82) is for controlling the setting value of electric power to be supplied to the heater lamp (64) in order to forced-drive the heater lamp (64) by an electric power that is higher than the setting value of electric power. Switching control means (84) performs switching between the first power control mode and the second power control mode depending on a status of operation of each of components forming an image forming apparatus (100).
摘要:
An image forming apparatus (1) is disclosed, including: a fixing unit (5); a main power supply (6) that provides a portion of the heaters with voltage; and a secondary power supply (711, 712) that provides another portion of the heaters connected to the portion of the heaters in parallel with power provided by the main power supply. The secondary power supply is disposed below and in the neighborhood of the fixing unit. An electric double layer capacitor (711) of the secondary power supply may be disposed between a side face of a chassis of the image forming apparatus and a thermally insulting wall (713) towards the fixing unit, or at an exterior of the chassis of the image forming apparatus on the side face of the chassis. The secondary power supply thus will not be heated by the fixing unit.
摘要:
An image forming system includes an image forming apparatus including an AC-DC converter and a main board, and a sub board having a sub connector connectable with a main connector of the main board. When the sub board is not connected with the main board, a main DC-DC converter on the main board converts a DC voltage from the AC-DC converter into a first DC voltage and output the first DC voltage to a circuit element for image formation. When the sub board is connected with the main board, the AC-DC converter outputs the DC voltage to a sub DC-DC converter on the sub board via the main connector and the sub connector, and the sub DC-DC converter converts the DC voltage from the AC-DC converter into a second DC voltage and output the second DC voltage to the circuit element via the sub connector and the main connector.
摘要:
An image forming apparatus includes an image forming unit configured to form an image on a recording material, and a printed circuit board including a voltage generation unit mounted thereon which is configured to generate a voltage to be applied to the image forming unit. A conductive member is provided on the printed circuit board, to which the voltage generated by the voltage generation unit is applied. An elastic member, including an arm portion biased toward the conductive member and configured to connect the conductive member and the image forming unit to each other. A holding unit is configured to hold the arm portion of the elastic member at a position where the arm portion is not in contact with the conductive member.
摘要:
An apparatus to generate a high voltage includes a switching part to control a voltage induced in a secondary coil of a power transforming part, by interrupting a current in a primary coil of the power transforming part, a digital controlling part to control the interruption operation of the switching part according to supplied control data. The switching part, the digital interfacing part and the digital controlling part may be embodied in an ASIC chip (application-specific integrated circuit). An optimum control according to an output state of the apparatus is easily achieved, manufacturing time for tuning each parameter is reduced and heat generation in the apparatus is reduced.
摘要:
An image forming apparatus includes a power supply supplying a plurality of developing devices with a first voltage to develop toners on an image carrier, and a voltage divider supplying some of the developing devices not connected to the power supply with the first voltage or a second voltage.
摘要:
A heating device including a main power source; a sub power source including a capacitor capable of charging and discharging; a heating member including a main heater and an auxiliary heater and configured to heat a material with the heater and the auxiliary heater, wherein the main heater and the auxiliary heater are supplied with electric power by the main power source and the sub power source; and a sub power source controller configured to control the sub power source such that a temperature of the auxiliary heater is controlled so as to be a target temperature, wherein the sub power source controller changes the target temperature, if necessary. A fixing device and an image forming apparatus including the heating device are also provided.