Canon Kabushiki Kaisha

Canon Kabushiki Kaiska

Masashige Tamura

Shinichi Nishida

Junji Yasuda

Takayuki Suzuki

Makoto Kitahara

Shigeo Doi

Kazumasa Shibata

Tomokazu Morita

Ayatomo Okino

Takayuki Tanaka

Kenji Okado

Daisuke Kawaguchi

Kazumi Yoshizaki

Seiichiro Adachi

Takeshi Fujino

Yuhei Takei

Naotaka Ikeda

Junko Yoshikawa

Toshiro Tomono

Kazuaki Takahata

Jun Horikoshi

Satoru Nitobe

Kenichi Tamura

Ryuichi Ibe

A developer supply container for use with an image forming apparatus includes a shell having an air passage and a discharge nozzle, a developer storage pouch storing developer contained inside the shell, and a discharging nozzle for discharging the developer accommodated in the developer storage pouch to outside of the developer supply container. In addition, an air passage allows air to communicate between inside and outside of the shell, and a seal attached to the shell seals the air passage to maintain a pressure inside the shell in a negative pressure state which is lower than a pressure outside the shell. The developer storage pouch is deformed to discharge the developer by peeling the seal off the shell to permit air to enter the shell through the air passage.

Developer supply container and image forming apparatus

Provided are a sheet feeding device capable of preventing the occurrence of failure in sheet feeding and degradation in quality of printed matter with downsizing achieved and an image forming apparatus provided with the sheet feeding device. The sheet feeding device includes a sheet storing portionin which sheets are stored, a feeding rollerplaced above the sheet storing portion, a flexible memberplaced along part of the peripheral surface of the feeding roller with one end of the flexible member fixed to the sheet storing portion at a position below the stored sheets, and a pulling-up portionthat is connected to the other end of the flexible member above the sheet storing portion and that pulls up the flexible member to press the sheet on the feeding roller.

Sheet feeding device and image forming apparatus

The present invention is directed to a sheet feeding apparatus including a sheet feeding unit capable of feeding sheets stacked on a sheet stacking face of a sheet stack tray, wherein the sheet feeding unit includes a feeding roller configured to feed the sheets, a driving motor configured to rotate the feeding roller, a lifting member configured to move at least edges of the sheets in a direction of the feeding roller, a sheet-shaped member connected to a front end of the lifting member at the downstream side, and a counter member disposed opposite to the feeding roller to pinch the sheet-shaped member, wherein, when the feeding roller is rotated, the sheet-shaped member is moved to the downstream side to cause the lifting member to move, and when the sheets are brought into contact with the feeding roller, the contacted uppermost sheet is fed by the feeding roller.

Sheet feeding apparatus and image forming apparatus

A developer supplying unit of the present invention includes a first driving mechanism which transmits rotational driving to a drive shaft by rotating a first rotational shaft in a normal direction and a second driving mechanism which reciprocates a bottle holding member as a support member to support a toner replenishment unit between a first position within an apparatus main body and a second position being different from the first position by rotating the first rotational shaft in a reverse direction.

Developer supplying unit

A fixing apparatus in which a sheet on which a toner image is fixed in a first heating portion is conveyed to a second heating portion through a first conveying path, the conveyed sheet is re-fixed in the second heating portion, and the re-fixed sheet is conveyed through a second conveying path having a curved guide surface. The first conveying path, the second heating portion, and the second conveying path are arranged from above downward in order of mention, and the sheet re-fixed in the second conveying path is allowed to pass so that a surface opposite to a surface on which the image is fixed moves along the guide surface.

Glossiness processing apparatus and image forming apparatus

An image forming apparatus has an image forming unit for forming a toner image on a recording material, a first image heating unit having a first rotary member and a second rotary member forming a first nip therebetween, and a second image heating unit provided with a third rotary member forming a second nip between it and the first rotary member. The first rotary member, second rotary member and third rotary member respectively has a heater and an introducing unit introduces the recording material heated in the first nip into the second nip. A recording material separation temperature of the second image heating unit is lower than the recording material separation temperature of said first image heating unit, and when the toner image is heated in the second nip, the second rotary member heats the first rotary member.

Image forming apparatus with multiple image heating nip portions

A coupling member of a toner supply container in a toner supply system detachably mountable to an image forming apparatus, includes a rotatable engagement portion provided with a hook portion which is hook-engageable with an engagement member provided in the image forming apparatus to receive a rotational force for discharging the developer in the container; a release portion for receiving a force, for displacing the hook portion inwardly in a radial direction, from a hollow release member provided in the image forming apparatus so as to release engagement of the hook portion with the engagement member; and a regulation portion provided with a hollow cylindrical portion in which a regulation shaft provided in the image forming apparatus is insertable to regulate an inclination of the coupling member by contact with the regulation shaft when the coupling member is moved away relative to the engagement member in an axial direction of the engagement portion in a state in which the release portion receives the force from the hollow release member.

Sealing member, toner supply container, and toner supply system

An image forming apparatus operable in high-gloss and low-gloss image forming modes and which has an image forming unit for forming a toner image on a recording material; an image heating unit for heating the toner image on the recording material in a nip portion, the image heating unit having a rotary member contacting with the front surface of the recording material in the nip portion, and a belt contacting with the rear surface of the recording material in the nip portion; a unit for reversing the front surface and rear surface of the recording material heated in the nip portion, and reintroducing the recording material into the nip portion; and a cooling unit for cooling the recording material after reintroduced moving while keeping contact with the belt before the recording material is separated from the belt.

Image forming apparatus with high and low gloss modes

An image forming apparatus has a developing device containing therein a developer including a toner and a carrier, the developing device having a first chamber for developing an electrostatic image formed on an image bearing member, and a second chamber constituting a developer circulating route between it and the first chamber, a carrying member rotatably provided in the second chamber for carrying the developer, a rotary member holding the developing device and rotatable in a route including a developing position, a supplying device for supplying the developer to the developing device when at the developing position, an opening provided in the second chamber for outwardly discharging therethrough any excess developer resulting from the supply of the developer, and a wall portion provided in the second chamber for suppressing the developer flowing out through the opening with the rotation of the rotary member.

Image forming apparatus including gravity-operated opening and closing member for discharging excess developer

An image forming apparatus includes a developing device, a supply tube, a feeding screw and a magnetic member. The developing device develops an electrostatic image formed on an image bearing member with a magnetic developer. The supply tube supplies the magnetic developer into the developing device. The feeding screw feeds the magnetic developer in the supply tube. The magnetic member confines the magnetic developer in a clearance between the supply tube and the feeding screw. The magnetic member is provided at a substantially radially outermost portion of the feeding screw.

Image forming apparatus with magnetic member in feeding supply tube/screw assembly

By a conventional mechanism for detecting a position of a knob of a toner bottle, the detection of the presence or absence of the toner bottle could not be effected. So, by providing an optical sensor on the inner surface of an interchange door opposed to the knob of the toner bottle, it is possible to effect the detection of the presence or absence of the toner bottle, and the detection of the position of the knob, i.e., the opening and closing of a shutter of the toner bottle.

Toner supplying container with shutter position/detection portion sensor feature and image forming apparatus including the same

It has sometimes been the case that when a developing device becomes inverted with the rotation of a rotary, a developer in the developing device flows out in a great deal through a discharge port. So, the height of the ceiling of an agitating chamber is made great in an area near the discharge port, it has become possible to prevent the excessive discharge of the developer from the developing device.

Developing apparatus including a plurality of two-chamber developer containers wherein a ceiling height of the second chamber is higher near a discharge opening

An image forming apparatus includes a developing device for developing an electrostatic image formed on an image bearing member with a magnetic developer; a supply tube for supplying the magnetic developer into the developing device; a feeding screw for feeding the magnetic developer in the supply tube; and a magnetic member for confining the magnetic developer in a clearance between the supply tube and the feeding screw, wherein the magnetic member is extended along an outer configuration of the feeding screw.

Image forming apparatus

A developing device including: plural developing units each for developing an electrostatic image formed on an image bearing member with developer that contains toner and carriers in a developing portion; a rotary member for mounting the plurality of developing units thereon and rotating along a path that includes the developing portion; and a containing pipe provided in the rotary member to contain excess developer discharged from the developing units in association with a replenishment of developer, in which the containing pipe is substantially non-rotatably provided, and the developer in the containing pipe is fed utilizing the rotation of the rotary member.

Developing device

In an image forming apparatus having a powder transport mechanism including a powder container and a powder transport means which rotates relative to the powder container, the powder transport means has the rotation center substantially on the axis of the powder container, and the space between the inner wall surface of the powder container and the powder transport means is sealed with magnetic particles held by a magnetic-filed generation means. The magnetic particles have a specific saturation magnetization &#x3c3;s and a specific value of A&#xd7;&#x3c3;where the residual magnetic flux density of the magnetic-field generation means is represented by A in a specific range and the magnetization intencity of the magnetic particles in a magnetic field with the residual magnetic flux density A is represented by &#x3c3;.

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Toride, Japan

Masashige Tamura