Abstract: Constant current charge control for supplying a charging current of a set current value to a battery by duty-ratio control for a full-bridge circuit is executed. When the voltage between terminals of the battery rises to a set voltage value during the constant current charge control, the constant current charge control is stopped and constant voltage charge control for supplying the charging current to the battery to maintain the voltage between the terminals at the set voltage value is executed. When the charging current drops to zero during the constant voltage charge control, the constant voltage charge control is stopped and zero amp control for maintaining the charging current at zero is executed. When the voltage between the terminals rises above the set voltage value during the zero amp control, the zero amp control is stopped and minute discharge control is executed.

Abstract: A full-bridge power converter is provided. A control unit 30 generates control signals for individual switching elements for controlling ON/OFF operation of switching elements 11˜14, alternately turns the switching element 11 and switching element 12 ON/OFF, also alternately turns the switching element 13 and switching element 14 ON/OFF, outputs supply current from a full-bridge circuit 10 for supplying to a load 3, and, during a period when the supply current is not supplied, turns ON both the switching element 11 and switching element 13 to pass inertial current by discharging energy stored in inductors 16 and 17, and filter capacitors 19 and 20 absorb the charge of common-mode noise components appearing on an output line connecting the inductor 16 and an output capacitor 18 and on an output line connecting the inductor 17 and the output capacitor 18.

Abstract: A full-bridge power converter is provided. A control unit 30 generates control signals for individual switching elements for controlling ON/OFF operation of switching elements 11˜14, alternately turns the switching element 11 and switching element 12 ON/OFF, also alternately turns the switching element 13 and switching element 14 ON/OFF, outputs supply current from a full-bridge circuit 10 for supplying to a load 3, and, during a period when the supply current is not supplied, turns ON both the switching element 11 and switching element 13 to pass inertial current by discharging energy stored in inductors 16 and 17, and filter capacitors 19 and 20 absorb the charge of common-mode noise components appearing on an output line connecting the inductor 16 and an output capacitor 18 and on an output line connecting the inductor 17 and the output capacitor 18.

Abstract: A full-bridge power converter is provided wherein a full-bridge circuit is operated so as to minimize ripple current. A switch control unit 20 generates control signals for individual switching elements to control the ON/OFF operation of switching elements of a full-bridge circuit 10, thereby turning a switching element (Q1) 11 and a switching element (Q2) 12 ON and OFF alternately and turning a switching element (Q3) 13 and a switching element (Q4) 14 ON and OFF alternately to output from the full-bridge circuit 10 supply current for supplying to a load 21, and turning ON both the switching element (Q1) 11 and the switching element (Q3) 13 during a period when the supply current is not output, thereby connecting and passing inertial current between the connection points of the full-bridge circuit 10.

Abstract: An image drum cartridge includes supporting walls, on which a photoconductive drum rotates, a position selector, a developing roller that rotates relative to the position selector, a developing blade that forms a thin layer of toner on the developing roller, and a slideable member that urges the developing blade against the developing roller. The position selector is mounted on the supporting walls and movable between first and second positions. The position selector causes the developing roller to move to an operative position where a nip is formed between the photoconductive drum and the developing roller. The position selector causes the developing roller to move to an inoperative position where no nip is formed between the photoconductive drum and the developing roller. The developing roller has a first rotational axis and the position selector has a second rotational axis away from the first rotational axis.

Abstract: An image drum cartridge includes supporting walls, a photoconductive drum, a position-selecting member, and a developing roller. The photoconductive drum is rotatably supported on the supporting member. The position-selecting member is mounted on the supporting member and movable between a first position and a second position. The developing roller is rotatable relative to the position-selecting member. The position-selecting member moves to a first position to cause the developing roller to move to an operative position where a nip is formed between the photoconductive drum and the developing roller. The position-selecting member moves to a second position to cause the developing roller to move to an inoperative position where no nip is formed between the photoconductive drum and the developing roller. The developing roller has a first rotational axis and the position-selecting member has a second rotational axis away from the first rotational axis.

Abstract: A toner cartridge extending in a longitudinal direction thereof has a fresh toner chamber and a water toner chamber. The fresh toner chamber and waste toner chamber extend parallel to each other so that the fresh toner chamber and the waste toner chamber are aligned in a direction perpendicular to the longitudinal direction. The waste toner chamber incorporates a toner-conveying member such as a screw conveyor. The screw conveyor extends between the opposed longitudinal ends, and causes the waste toner to move further into the waste toner chamber. The waste toner chamber has an entrance formed therein through which waste toner is received from a print process cartridge. The entrance opens yieldably when a waste toner exit enters the waste toner chamber through the entrance and closes when the waste toner exit moves out of the enters the waste toner chamber.

Abstract: A method of manufacturing a laminate obtained by laminating a plurality of plate members such as wiring plates (1) and prepregs (2), comprising: a step of temporarily fixing the plate members by a grommet (3) having plural resin filling holes (9) formed on the side surface thereof to obtain a temporarily-fixed laminate (5); and a step of heating and pressurizing the temporarily-fixed laminate (5) to fill the resin melted from the prepregs (2) of the temporarily-fixed laminate (5) through the resin filling holes (9) of the grommet (3) into the throughhole (6) of the grommet (3).

Abstract: A toner cartridge extending in a longitudinal direction thereof has a fresh toner chamber and a water toner chamber. The fresh toner chamber and waste toner chamber extend parallel to each other so that the fresh toner chamber and the waste toner chamber are aligned in a direction perpendicular to the longitudinal direction. The waste toner chamber incorporates a toner-conveying member such as a screw conveyor. The screw conveyor extends between the opposed longitudinal ends, and causes the waste toner to move further into the waste toner chamber. The waste toner chamber has an entrance formed therein through which waste toner is received from a print process cartridge. The entrance opens yieldably when a waste toner exit enters the waste toner chamber through the entrance and closes when the waste toner exit moves out of the enters the waste toner chamber.

Abstract: A method of manufacturing a laminate obtained by laminating a plurality of plate members such as wiring plates (1) and prepregs (2), comprising: a step of temporarily fixing the plate members by a grommet (3) having plural resin filling holes (9) formed on the side surface thereof to obtain a temporarily-fixed laminate (5); and a step of heating and pressurizing the temporarily-fixed laminate (5) to fill the resin melted from the prepregs (2) of the temporarily-fixed laminate (5) through the resin filling holes (9) of the grommet (3) into the throughhole (6) of the grommet (3).

Abstract: A method of manufacturing a laminate obtained by laminating a plurality of plate members such as wiring plates (1) and prepregs (2), comprising: a step of temporarily fixing the plate members by a grommet (3) having plural resin filling holes (9) formed on the side surface thereof to obtain a temporarily-fixed laminate (5); and a step of heating and pressurizing the temporarily-fixed laminate (5) to fill the resin melted from the prepregs (2) of the temporarily-fixed laminate (5) through the resin filling holes (9) of the grommet (3) into the throughhole (6) of the grommet (3).

Abstract: A toner cartridge extending in a longitudinal direction thereof has a fresh toner chamber and a water toner chamber. The fresh toner chamber and waste toner chamber extend parallel to each other so that the fresh toner chamber and the waste toner chamber are aligned in a direction perpendicular to the longitudinal direction. The waste toner chamber incorporates a toner-conveying member such as a screw conveyor. The screw conveyor extends between the opposed longitudinal ends, and causes the waste toner to move further into the waste toner chamber. The waste toner chamber has an entrance formed therein through which waste toner is received from a print process cartridge. The entrance opens yieldably when a waste toner exit enters the waste toner chamber through the entrance and closes when the waste toner exit moves out of the enters the waste toner chamber.

Abstract: A toner cartridge includes an outer pipe, inner pipe inserted into the outer pipe, and cap fitted over the inner pipe. The outer pipe and inner pipe are of a long, hollow cylinder shape and are formed with a plurality of first and second openings, respectively, therein aligned longitudinally thereof. The inner pipe has at one end thereof a toner-filling opening and an annular flange eccentric with respect to the hollow cylinder, and at the other end thereof a knob that closes the longitudinal end of the hollow cylinder and abuts the outer pipe. The first openings are not aligned with the second openings when the inner pipe is at a first rotational position and are aligned when the inner pipe is at a second rotational position. A sealing member is mounted to the inner pipe encircling the second openings and has third openings aligned with the second openings.

Abstract: A toner cartridge includes an outer pipe, inner pipe inserted into the outer pipe, and cap fitted over the inner pipe. The outer pipe and inner pipe are of a long, hollow cylinder shape and are formed with a plurality of first and second openings, respectively, therein aligned longitudinally thereof. The inner pipe has at one end thereof a toner-filling opening and an annular flange eccentric with respect to the hollow cylinder, and at the other end thereof a knob that closes the longitudinal end of the hollow cylinder and abuts the outer pipe. The first openings are not aligned with the second openings when the inner pipe is at a first rotational position arid are aligned when the inner pipe is at a second rotational position. A sealing member is mounted to the inner pipe encircling the second openings and has third openings aligned with the second openings.

Abstract: There is provided a method of fabricating a multi-layered printed wiring board, including the steps of (a) forming a multi-layered substrate with a hole which will make a blind via-hole, (b) plating the multi-layered substrate, (c) forming an internal layer circuit pattern and an external layer circuit pattern, (d) laying one multi-layered substrate on another, (e) forming a product of the step (d) with a through-hole, (f) covering surfaces of a product of the step (e) including an inner wall surface of the through-hole with an electrically conductive film, (g) forming a resist in an area other than the through-hole, (h) plating the inner wall surface of the through-hole, (i) removing the resist, and (j) removing the electrically conductive film formed on the surfaces of the product of the step (e).

Abstract: An electrophotographic printer has a toner recycling transporting mechanism with a belt conveyor that transports toner from a toner collection chamber, in which toner removed from the photosensitive drum of the printer is collected, to a toner delivery chamber, from which toner is returned to the developing unit of the printer . The belt conveyor is disposed in a channel that loops around the ends of roller shafts in the printer, and does not increase the width of the printer. The toner recycling transporting mechanism is easily assembled, and can be driven without motion irregularities.