Konica Corporation

Konica Minolta Business Technologies, Inc.

Shigeru Okazaki

Daisuke Ueda

Akira Kosugi

Makoto Ui

Kenichi Hosoi

Takanori Kanda

Masahiro Yoshino

Naoki Otomo

Kenji Kato

Noriaki Takahashi

Takashi Tamura

Toshio Shida

Masahiro Kaneko

Tadayoshi Ikeda

Hisao Satoh

Hiroyuki Honda

Mitsugu Nemoto

Atsushi Ogane

Jun-ichi Koiso

Noboru Koizumi

Eiji Anzai

Takeshi Sakabe

Kiyohari Nakagawa

Naoko Otomo

A feeding apparatus including a feeding roller for conveying a sheet, a separation roller for conveying the sheet in a reverse direction, a transmission mechanism for transmitting the rotational force to the feeding roller, a limited force reverse transmission mechanism for transmitting the rotational force to the separation roller through a torque limiter, a forced reverse transmission mechanism for directly transmitting the rotational force to the separation roller, a temperature detector and a controller, wherein the controller controls the separation roller to receive rotational force through the forced reverse transmission mechanism after the limited force reverse transmission mechanism transmits the rotational force to the separation roller, then allows the limited force reverse transmission mechanism to transmit the rotational force to the separation roller, or to rotate the feeding via the transmission mechanism and the limited force transmission mechanism to transmit the rotational force to the separation roller.

Feeding apparatus, and image forming apparatus incorporating feeding apparatus

A sheet feeding apparatus, having: a first sheet feeding member to press a top surface of a sheet for sending out a sheet stored in a sheet storing section; a second sheet feeding member arranged on a downstream side of the first sheet feeding member with respect to a sheet feeding direction to further convey the sheet from the first sheet feeding member downstream; and a first cleaning member rotatably supported in contact with a circumference surface of the first feeding member and a circumference surface of the second feeding member to cleaning a circumference surface of the first feeding member and a circumference surface of the second feeding member by rotation.

Sheet feeding apparatus and image forming apparatus

A sheet feeding device includes: a conveying member of a conveying unit which conveys a sheet; and a cleaning member which is in sliding contact with a circumferential surface of the conveying member to clean the circumferential surface. The conveying member and the cleaning member rotate in the same tangential direction at a sliding contact position thereof, and drives of the conveyance member and the cleaning member are controlled so that the following expression is satisfied:V1&#x3e;V2where Vrepresents a line speed of the circumferential surface of the conveying member during a rotation thereof, and Vrepresents a line speed of a sliding contact portion of the cleaning member during a rotation thereof.

Sheet feeding device and a cleaning member in sliding contact with a conveying unit

A sheet feeding apparatus includes: a sheet tray in which a plurality of sheets is to be stacked; a sheet feeding section which vacuums a sheet from the plurality of sheets stacked in the sheet tray and feeds the sheet to an image forming apparatus; a first sheet separator which has a member which separates each sheet from the plurality of sheets when the sheet feeding section feeds the plurality of sheets; and a second sheet separator which has a forward roller rotated in a sheet transport direction, which feeds the sheet to the image forming apparatus, and a parallel retard roller rotatable in an opposite direction so as to separate each sheet from the plurality of sheets.

Sheet feeding apparatus and image forming system

Overhang portion of a paper feed machine

A sheet feeding apparatus includes a sheet feeding roller that comes in contact with stacked sheets and feeds sheets one by one from the top, wherein an air outlet is provided so that air can be blown onto the upper part of the stacked sheets from the lateral side in the sheet feeding direction, and a floatation suppression member for suppressing floatation of the sheet is provided between the air outlet and the feeding roller and spaced apart from the uppermost surface of the stacked sheets.

Sheet feeding apparatus

A sheet feeding apparatus includes a sheet feeding roller that comes in contact with stacked sheets and feeds sheets one by one from the top, wherein an air outlet is provided so that air can be blown onto the upper part of the stacked sheets from the lateral side in the sheet feeding direction, and a floatation suppression member for suppressing floatation of the sheets is provided between the air outlet and the sheet feeding roller and spaced apart from the uppermost surface of the stacked sheets.

A developer replenishing apparatus includes: a developer storing container for storing a developer therein; a first driving source for rotating the developer storing container to supply the developer; a developer reservoir section for receiving the developer supplied from the developer storing container; a conveying screw for replenishing the developer in the developer reservoir section onto a developing device; a second driving source for driving the conveying screw; and a stirring member for stirring the developer in the developer reservoir section, the stirring member having a first and second one-way clutches provided on a driving shaft thereof. The stirring member is driven by the first driving source through the first one-way clutch, and driven by the second driving source through the second one-way clutch.

Developer replenishing apparatus

A developing agent replenishing device includes: a developing agent storing container having a spiral protrusion in an interior thereof, including a container main body for storing therein a developing agent and a movable cover for opening or closing a developing agent discharging opening provided on one end of the container main body; a container mounting section to which the storing container is mounted, wherein the developing agent stored in the storing container is discharged by rotating the storing container; a developing agent reserving section for reserving therein the developing agent discharged from the storing container; a cover engagement portion for engaging with the movable cover when the storing container is mounted to the container mounting section; and a holding and moving device for holding a part of the storing container and for moving the storing container when the storing container is mounted to the container mounting section. The movable cover and the storing container main body are relatively moved by moving the storing container by the holding and moving device, thereby the discharging opening is opened, and consequently communicates with the developing agent reserving section so that the developing agent in the storing container can be discharged.

Developing agent replenishing device and image forming apparatus with

Toner container

An image forming apparatus including a lower half body; an upper half body which is mounted on the lower half body and has an axis arranged in parallel to a sheet passage so that the upper half body can be pivoted around the axis; and a platen cover provided on the upper half body so as to open or close in the same direction as that of the upper half body: wherein the sum of pivot angle of the upper half body and the platen cover is smaller than 90 degrees.

Image forming apparatus of a clamshell type

A fixing apparatus for use in an electrophotographic copying machine for fixing a toner image on the surface of a recording paper. The fixing apparatus is provided with a fixing means to fix the toner image on a recording paper, ejecting means to eject the recording paper after the fixation of the toner image and a correcting roller located along the ejecting path of the recording paper to correct a curl of the recording paper induced during the fixing process by bending the recording paper in an opposite curvature of the curl.

Fixing apparatus

The invention provides a developing apparatus in which toner is mixed with magnetic carrier particles by agitator in an agitating part so as to form two component type developer. The device for feeding toner has a rotatable feeding roller disposed above the agitating part of said developing apparatus for feeding toner thereto, the feeding roller including plural magnets therein so that magnetic carrier particles are attracted to form magnetic brush around the circumference of the feeding roller and toner is conveyed by the magnetic brush with the rotation of the feeding roller. Between the agitating part and the feeding roller, there is provided a partition having an opening positioned beneath the feeding roller so that the magnetic brush passes across the opening and the conveyed toner drops into the agitating part through the opening. At one side of the periphery of the opening, there is provided a prevention plate for preventing toner leakage, and at another side of the periphery of the opening opposite to the one side, there is provided a regulating plate for regulating a height of said magnetic brush.

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Musashimurayama, Japan

Shigeru Okazaki