Abstract: A process cartridge toner supply arrangement used in a laser printer for controlling supply of toner is constructed to include a receiving member, the receiving member having toner receiving openings and a toner accommodating portion, a replaceable supplying member, the supplying member having a toner accommodating portion and toner supplying openings, and a blocking member provided between the receiving member and the supplying member and moved to close/open the toner passage between the toner receiving openings and the toner supplying openings.

Abstract: A sliding cover device arrangement for controlling toner passage between a toner container and a developing device of an image forming apparatus, wherein the developing device has a plurality of toner receiving openings formed thereon, and the toner container is adapted for holding toner and supplying toner to the developing device, and has a plurality of toner supplying openings formed thereon corresponding to the plurality of toner receiving openings.

Abstract: A toner container used with a developing device in an image forming apparatus is disclosed having a toner accommodating portion adapted for accommodating toner; a stirring member adapted for stirring toner in the toner accommodating portion, toner supplying openings for output of toner from the toner container to the developing device, a sliding cover adapted for closing/opening the toner supplying openings, and projections respectively protruded from the sliding cover and adapted for engaging into toner receiving openings of the developing device for enabling the toner container to be moved relative to the sliding cover and the developing device to close/open the toner supplying openings.

Abstract: A process cartridge and developer container assembly is constructed to include a main cartridge holding an electrophotographic photosensitive member, developing means, charging means, and cleaning means, a developer container holding developer and detachably secured to the main cartridge, and a coupling member for enabling the developer container to be detachably coupled to the main cartridge. The main cartridge has a plurality of developer receiving openings, and a first sliding cover, which opens the developer receiving openings upon installation of the developer container in the main cartridge, or closes the developer receiving openings after removal of the developer container.

Abstract: A toner supplying container detachably mountable to an image forming apparatus. In one embodiment, the toner supplying container includes a first container for receiving toner and a second container for accommodating toner and providing toner to the first container. The second container is releasably mounted to the first container at a predetermined position such that the first container and second container communicate to each other. The second container is replaceable when the toner accommodated in the second container is used up by a third container that is substantially identical to the second container but has toner therein.

Abstract: A developer container in which the container body has an inwardly protruded spiral guide flange spirally forwardly extended to a developer supply port and defining a spiral flow guide way adapted to guide developer from the inside of the container body to the outside of the container body through the developer supply port, the developer supply port having a recessed developer accumulation area and a through hole through the center of the recessed developer accumulation area, the spiral guide flange having a beveled guide face extended to the recessed developer accumulation area.

Abstract: A developer-replenishing container having a cylindrical container body holding a developer, a front bottleneck for output of the developer, a tubular front extension axially connected between the container body and the front bottleneck, smooth developer guide wall portions and oblique developer guide wall portions alternatively arranged in a spiral series inside the container body and the tubular front extension and adapted to guide the developer toward the front bottleneck without causing a laminar flow.

Abstract: A developer replenishing container includes a container body, and a plurality of clamping strips selectively used with the container body for mounting in a copier, wherein the container body has a slide moved in and out of a frame at a bottom neck thereof for developer output control, and two locating blocks at two opposite sides of the bottom neck above the frame; the clamping strips each have a mouth adapted to receive the bottom neck of the container body, two recessed receiving portions disposed at two opposite lateral sides and facing each other and adapted to receive the locating blocks of the bottom neck, two flat positioning ribs respectively disposed in the recessed receiving portions at a bottom side and adapted for engaging into the gaps between the top side wall of the frame and the locating blocks of the bottom neck, and at least one stop rod disposed outside the mouth for positioning in a copier.

Abstract: A developer replenishing container having a cylindrical container body with a bottle neck, and a tapered plug installed in the bottle neck of the cylindrical container body, wherein the tapered plug has a tubular shank axially extended from one end thereof and suspended in the bottle neck and defining with the bottle neck a developer passage for enabling the developer to be smoothly and evenly guided out of the container body through the developer passage upon rotary motion of the container body.

Abstract: A container body installed in an image forming apparatus to supply developer, having a spiral developer guide spirally extended around an inside wall thereof for guiding developer out of a front opening thereof, the spiral developer guide having a spiral guide way formed of flat surface portions and sloping surface portions alternatively connected in series, and two spiral flanges spirally formed integral with the inside wall of the container body along the series of flat surface portions and sloping surface portions at two opposite lateral sides.

Abstract: A developer replenishing container having a developer guide cone connected between a cylindrical body portion and a bottle neck for guiding developer out of the cylindrical body portion via the bottle neck, wherein the developer guide cone defines a spiral guide wall portion and a spiral developer flow passageway for guiding developer from the cylindrical body portion toward the bottle neck, the developer guide cone having a diameter made gradually reduced toward the bottle neck, and an angle of slope within about 15°˜45°, the spiral guide wall portion having a depth within about 3˜18 mm, the spiral developer flow passageway having a rear end smoothly extended to the bottle neck in a flush manner for guiding developer to the bottle neck.

Abstract: A developer cylinder and drive gear arrangement includes a drive gear having a coupling hole at one end of its gear shaft, and a developer cylinder having a coupling block at its one end coupled to the coupling hole at the gear shaft of the drive gear, wherein the coupling block of the developer cylinder has a plurality of teeth spirally disposed around the periphery thereof.

Abstract: A developer container for with a developer replenishing device in a copier or the like, the developer container including a cylindrical container body having a neck at its front end, a plurality of indented parallel guide ways around the periphery thereof for stirring up contained developer upon rotary motion of the container body, and two hollow projecting portions at two opposite sides of the neck, and a dispensing end cap fastened to the neck of the container body, the dispensing end cap having a hollow cylindrical mounting portion at one end inserted into the neck of the container body, a hollow cylindrical dispensing portion disposed at an opposite end outside the neck of the container body, a plurality of developer inlets for guiding in developer from the container body, a plurality of developer outlets for guiding developer out of the end cap, and a plurality of guide grooves on an inside wall thereof for guiding developer, from the developer inlets to the developer outlets.