Abstract: A process cartridge includes a photosensitive drum, a rotatable developing roller, a rotatable toner supplying roller provided in contact with the developing roller, and a rotatable feeding member provided in a toner chamber and configured to feed the toner from the toner chamber. A coupling is operatively connected to the developing roller, the toner supplying roller, and the feeding member, with the coupling being configured to receive a driving force for rotating the feeding member, the developing roller, and the toner supplying roller. A plurality of gears are operatively connected to the developing roller, the toner supplying roller, and the feeding member, with each gear of the plurality of gears being configured to transmit the driving force received by the coupling to at least one of the feeding member, the developing roller, and the toner supplying roller.

Abstract: A process cartridge includes a photosensitive drum, a rotatable developing roller, a rotatable toner supplying roller provided in contact with the developing roller, and a rotatable feeding member provided in the toner chamber and configured to feed the toner from the toner chamber. A coupling is configured to receive a driving force for rotating the feeding member, the developing roller, and the toner supplying roller. A plurality of gears are configured to transmit the driving force received by the coupling to at least one of the feeding member, the developing roller, and the toner supplying roller.

Abstract: A process cartridge includes a photosensitive drum; a developing roller; a developer supplying roller, provided in contact with the developing roller; a driving force receiving portion provided at a shaft end of the supplying roller; a first driving force transmitting portion; a second driving force transmitting portion; flexible sheets provided adjacent to an engaging portion between the first portion and the second portion to intermittently contact the second portion with rotation of the second portion, wherein a rotational direction of the roller is opposite to that of the roller, and a peripheral speed of the roller is larger than that of the roller.

Abstract: This camera has a plurality of light-emitting devices such as LED, which flicker in response to the number of shots which can be photographed. Also, while having no liquid crystal display for showing an error when it occurs, this camera has a non-volatile memory for writing an error code. When the camera is connected to a computer, the error code can be displayed on the computer screen.

Abstract: A power supply unit for an electronic device includes a power plug and an interconnection between the poser plug and the device. A power plug for an AC-DC adapter fits into a battery compartment of an electronic device instead of into a separate jack. The power supply unit includes an elastic cover that ensures a positive connection between the device and the power plug to prevent accidental disengagement of the power plug from the device. The power plug and battery compartment are configured so that an incorrect power plug cannot be connected by mistake. The configuration preferably includes a switch to signal the device that an AC-DC adapter is installed.