Abstract: An image forming apparatus includes a photoreceptor having a first support shaft supported in a first frame body, a photosensitive portion supported by the first support shaft, and a tapered portion having first tapered surfaces on both sides of the photosensitive portion; a development roller opposed to the photoreceptor and having a second support shaft rotatably supported by a second frame body, the development roller being movable in a direction perpendicular to the second support shaft so as to approach and separate from the photoreceptor; roller members disposed on both sides of the development roller coaxially with the second support shaft, the roller member being movable in an axial direction of the second support shaft and including a second tapered surface which abuts against the first tapered surface; a moving member allowing the roller member to move on the second support shaft; and a biasing member biasing the development roller toward the photoreceptor.

Abstract: A resin-made holding member made of an integrally built spring and holder wherein the spring is made up of a plurality of ring-shaped elastic pieces connected with one another, and the average wall thickness of each elastic piece at the end in the longest axial direction of inner diameter of the ring shape is greater than the average wall thickness of other portions.

Abstract: A resin-made holding member made of an integrally built spring and holder wherein the spring is made up of a plurality of ring-shaped elastic pieces connected with one another, and the average wall thickness of each elastic piece at the end in the longest axial direction of inner diameter of the ring shape is greater than the average wall thickness of other portions.

Abstract: A device for changing a passageway for paper includes flaps pivotably provided at branching points of the passageway and operable to change the paper feeding direction. Solenoids mounted with shafts are extended by first springs during non-energizing and retract during energizing, and second springs are provided for imparting biasing forces to follow the displacement of the shafts and to pivotably bias the flaps so that the flaps receive rotational moments of force acting in opposite directions in the energizing and non-energizing states, the rotational moment of force being set so as not to hinder the feed of the paper.

Abstract: A refrigerator temperature control system is disclosed in which the compressor for compressing a refrigerant is driven selectively at either a normal lower rotation speed or a higher rotational speed and the higher rotational speed is applied only when any of the freezer compartment temperature and the fresh food compartment temperature is not reduced below a predetermined temperature level for at least a predetermined time interval.

Abstract: A refrigerator has a machine chamber disposed in a bottom part of a refrigerator body, a cover for covering the machine chamber, upper heat discharge passages formed in side edge portions of a rear surface of the refrigerator body, lower heat discharge passages formed in offsetted portions of both sides of the machine chamber cover, and heat discharge ports provided in a wall of each of the lower heat discharge passages for providing a communication between the lower and the upper heat discharge passages. A main condenser of the refrigerator is mounted on a top of the refrigerator body and is covered by a decorative cover.

Abstract: A temperature control apparatus for use in a refrigerating machine, wherein an a.c. control element and the solenoid coil of a holding type solenoid are connected in series in an a.c. power circuit, the holding type solenoid serving to actuate a damper for opening and closing the outlet for ejecting cooled air into the refrigerating chamber, and also a temperature sensor for detecting the temperature in the refrigerating chamber and a triggering circuit for triggering the a.c. control element are provided in the a.c. power circuit. The triggering circuit supplies a trigger signal to the control electrode of the a.c. control element at a predetermined period in synchronism with the phase of the current from the a.c. power source in response to the output of the temperature sensor, so that the solenoid coil is energized to drive the damper.

Abstract: A control apparatus having an electronic timer including a plurality of flip-flop circuits connected in multiple stages in cascade. Outputs are taken from different stages of the electronic timer and the separate outputs are utilized to produce individual control timing signals which serve for controlling at least one device in accordance with the timing specific to the individual control timing signals.