Abstract: A semiconductor module 1 includes an IGBT 31z configured to supply a motor 24 with power, a pre-driver 41z configured to drive the IGBT 31z, a protection unit 42z configured to execute first protection operation protecting the IGBT 31z and the pre-driver 41z from operation in an abnormal state, an IGBT 31db configured to adjust the magnitude of voltage input to the IGBT 31z, a pre-driver 41db configured to drive the IGBT 31db, and a protection unit 42db configured to execute second protection operation protecting the IGBT 31db from operation in an abnormal state, and the protection unit 42db executes the second protection operation when the IGBT 31db is operating in an abnormal state and otherwise does not execute the second protection operation regardless of whether or not the protection unit 42z is executing the first protection operation.

Abstract: A gate drive circuit 22A, in order to cause an IGBT 211a in a semiconductor elements 21u to switch to the ON state according to the signal level of an input signal SinUH, includes a constant current supply unit 223uA configured to supply constant current to the gate G of the IGBT 211a, a switching signal input terminal Tsw4 to which a switching signal Ssw4 is input, a signal level determination unit 226uA configured to determine a signal level of the switching signal Ssw4, and a drive capability switching unit 224uA configured to, by changing a current amount of constant current output from the constant current supply unit 223uA, based on a determination result in the signal level determination unit 226uA and a signal level of the input signal SinUL, switch the drive capability of the constant current supply unit 223uA.

Abstract: A semiconductor module including a semiconductor element which is bonded to a wiring pattern part and connects or disconnects two main electrode terminals to or from each other according to a drive signal applied to a gate electrode terminal, includes a deterioration detecting circuit configured to use one main electrode terminal of the two main electrode terminals of the semiconductor element with an applied DC voltage, as a reference potential, and detect deterioration of a joining part of the semiconductor element on the basis of a gate voltage which is the voltage between the one main electrode terminal and the gate electrode terminal and an inter-main-electrode voltage which is the voltage between the one main electrode terminal and the other main electrode terminal, and outputs an alarm signal.

Abstract: A semiconductor module including a semiconductor element which is bonded to a wiring pattern part and connects or disconnects two main electrode terminals to or from each other according to a drive signal applied to a gate electrode terminal, includes a deterioration detecting circuit configured to use one main electrode terminal of the two main electrode terminals of the semiconductor element with an applied DC voltage, as a reference potential, and detect deterioration of a joining part of the semiconductor element on the basis of a gate voltage which is the voltage between the one main electrode terminal and the gate electrode terminal and an inter-main-electrode voltage which is the voltage between the one main electrode terminal and the other main electrode terminal, and outputs an alarm signal.

Abstract: A toner cartridge 107 of the present invention comprises a cartridge main body 106 having a toner storing section 114 for storing toner, a photosensitive member 109 for forming a toner image with the toner, and a rotation unit 105, which is rotatably held by the cartridge main body 106 in a state that the photosensitive member 109 is rotatably maintained, for rotating the photosensitive member 109 to a detachable position.

Abstract: A toner cartridge of the present invention is provided with toner storage box 201 having opening 202 to supply toner particles stored therein outside, and toner supply roller 208, provided at a position such that the roller covers opening 202 in the vicinity of opening 202, of which a surface is made of a soft porous material.

Abstract: A toner cartridge is provided that includes an agitator provided in a toner hopper. An agitator gear is coupled with the agitator in such a way that the agitator always has the same positional relationship with the agitator gear. The agitator gear is provided with a mark indicating the orientation of the agitator and an agitation blade fixed thereto. A method of feeding toner using the toner cartridge is also provided, in which the agitator and the agitation blade are withdrawn from the vicinity of a toner feeding hole by turning the agitator gear by hand while watching this mark, and toner is refilled through the toner feeding hole. Feeding toner in this manner enables feeding a predetermined amount of toner.

Abstract: The toner cartridge includes a coupling plate provided with a first support section that supports the axis of a photosensitive drum and a seconds support section that supports the axis of the magnet roller. The toner cartridge mounts this coupling plate so that the first support section supports the axis of the photosensitive drum provided in a first part of the toner cartridge and the second support section supports the axis of the magnet roller provided in the second part of the toner cartridge, thus maintaining a predetermined distance between the axis of the photosensitive drum and the axis of the magnet roller.

Abstract: A communication apparatus for information comprises a recording roller for feeding a recording paper. A line-type recording head is operative for recording an image on the recording paper. Normally, the recording head presses the recording paper against the recording roller. A first releasing mechanism is operative for allowing relative movement of the recording head and the recording roller away from each other. A reading roller is operative for feeding a document sheet. A reading head is operative for reading information from the document sheet. The reading head is located near the recording head. Normally, the reading head presses the document sheet against the reading roller. A second releasing mechanism is operative for allowing relative movement of the reading head and the reading roller away from each other. First and second side plates are located respectively at opposite sides of the recording roller, the recording head, the reading roller, and the reading head.

Abstract: A process cartridge case including a toner hopper, and a discharged toner box disposed at both sides of a drum housing accommodating a photoconductive drum. The process cartridge case is separable into first and second parts at a border in a region of the drum housing. Legs are provided on an outer surface of the toner hopper so that the process cartridge can be placed in an upright position during a refilling operation.An agitator extends beyond a side wall in a cantilever fashion to allow a box with a bearing member to rotatably support the agitator shaft. An elastic member is included in the box to hermetically seal the agitator shaft and prevent toner leakage.