Canon Kabushiki Kaisha

Taku Watanabe

Kohei Matsuda

Masahito Kato

Motonari Ito

Katsuichi Abe

Shun Sato

Akira Suzuki

Naoki Matsumaru

Junichi Matsumura

Go Shindo

Shinya Yamamoto

Yuichiro Hirata

Bunro Noguchi

Kentaro Kawata

Tetsuya Kobayashi

Hideki Maeshima

Tsutomu Shimano

Yuki Nishizawa

Kuniaki Hirukawa

Shuhei Kawasaki

Takayoshi Kihara

Kodai Hayashi

Shinichi Agata

Shunsuke Matsushita

Yusaku Iwasawa

Kazumi Yamauchi

Masato Koyanagi

Yasunori Toriyama

Hiraku Sasaki

Kentarou Kawata

Kenta Shibukawa

Keisuke Endoh

Koichiro Masui

A press-bonded sheet in which two sheet portions are press-bonded in a peelable state is manufactured by a method including steps of: forming an adhesive layer containing powder adhesive on a sheet; heating the adhesive layer to fix it to the sheet; opposing an area on the sheet where the adhesive layer is fixed and an area on the same sheet or on a different sheet where another adhesive layer is formed and fixed; and press-bonding the opposed areas. The fracture strain of a main constituent material of the powder adhesive is 10% or more and less than 1000%.

Press-bonded sheet manufacturing method, press-bonded sheet manufacturing apparatus, and image forming apparatus

A sheet bonding apparatus includes an applying portion, a fixing portion, a folding portion, and a bonding portion including a heating member and a non-heating member which oppose to each other and which are for bonding the sheet by nipping the sheet therebetween. Two regions opposing to each other when the folding portion folds a sheet are a first region and a second region. In a case that when the bonding portion bonds the folded sheet, the first region is positioned on a heating member side and the second region is positioned on a non-heating member side, the applying portion applies the powdery adhesive so that an application amount of the powdery adhesive on the sheet is smaller in the first region than in the second region.

Image forming apparatus having sheet bonding apparatus

A sheet bonding apparatus includes an electrophotographic unit configured to apply powder adhesive on a sheet by an electrophotographic process, a folding portion configured to fold the sheet on which the powder adhesive has been applied by the electrophotographic unit, and a bonding portion configured to heat the sheet folded by the folding portion to bond the sheet by the powder adhesive, wherein the bonding portion and the folding portion are disposed over the electrophotographic unit.

Sheet bonding apparatus

An adhesion apparatus includes: an image forming unit configured to form, through an electrophotographic process, an adhesive image of a powder adhesive on a sheet that is conveyed; and a control unit configured to control the image forming unit to use a first pattern in a first conveyance period, and use a second pattern different from the first pattern in a second conveyance period following the first conveyance period, as a formation pattern in an adhering section corresponding to part of a width direction orthogonal to a conveyance direction of the sheet.

Adhesion apparatus for forming image of powder adhesive, and image forming apparatus

An image forming apparatus including a holding apparatus configured to collect residual developer remaining on an intermediate transfer belt and temporarily hold the residual developer, and a cleaning member configured to remove toner borne on the photosensitive drum that moves the toner held by the holding apparatus to the intermediate transfer belt and discharging the toner. Toner from a development roller is supplied to the cleaning member before toner reversely transferred from the intermediate transfer belt is supplied to the cleaning member.

Image forming apparatus for an intermediate transfer of a toner image and for reversely transferring collected developer to an image bearing member

An image forming apparatus includes an image bearing member, a charging member for charging the image bearing member, an exposure unit for exposing the charged surface of the image bearing member, a developing apparatus that supplies a developer containing a toner particle and an external additive having an opposite charging polarity to the regular charging polarity of the toner particle to the image bearing member, a cleaning member for removing the developer from the image bearing member, a transfer member for transferring a developer image on the image bearing member onto a transfer subject material, and a voltage application unit for applying a voltage to the transfer member. During an image non-formation period as a lubrication operation to the cleaning member, (i) the developer is supplied to the image bearing member, and (ii) a voltage having an identical polarity to a voltage applied during the image formation operation is applied.

Image forming apparatus

A method of manufacturing a developer container including a frame configured to define a developer containing portion, a first electrode, and a second electrode arranged on a surface of the frame and having a surface opposed to the first electrode, a developer amount in the developer containing portion being detected based on a capacitance between the first electrode and the second electrode, the method including: holding a conductive resin member constituting the second electrode on a mold configured to mold the frame, a surface of the conductive resin member being in contact with a surface of the mold configured to mold a surface of the frame on a side of the developer containing portion; injecting a resin to be formed into the frame, into the mold on which the conductive resin member is held; and curing the resin to form the frame to which the second electrode is fixed.

Method of manufacturing developer container, developer container, developing apparatus, process cartridge, and image forming apparatus

An image bearing member unit and a developing unit are respectively configured to be attachable to and detachable from an apparatus main body of an image forming apparatus, the image bearing member unit has a first memory that stores information related to a toner amount during a toner supply in accordance with a use amount of the image bearing member unit, the developing unit has a second memory that stores information related to a toner amount during the toner supply in accordance with a use amount of the developing unit, and a control device controls, during the toner supply, the toner supply with a toner amount based on the information stored in the first memory and the information stored in the second memory.

An image forming apparatus includes an agitating member, a first electrode, a second electrode disposed with a gap from the first electrode such that the gap has a smallest portion located below a rotation center of the agitating member and a remote portion wider than the smallest portion and located above the smallest portion, and a frame body having a first wall surface having the first electrode disposed thereon and a second wall surface having the second electrode disposed thereon, and a developer detecting unit configured to detect an amount of developer from an output value output in accordance with a capacitance formed between the first electrode and the second electrode. The image forming apparatus performs correction and detects the amount of developer.

Image forming apparatus having a developer detecting unit

Method of manufacturing developer container

This disclosure provides a developer container in which a conductive resin sheet is used as an electrode for detecting an amount of developer by using electrostatic capacitance. A configuration in which an end of the conductive resin sheet in a longitudinal direction is provided outside an end of a sheet member in a longitudinal direction, or a configuration in which the sheet member starts contact with the conductive resin sheet from a second surface on the downstream side in a direction or rotation than a first surface are also provided.

Developer container, developing apparatus, process cartridge, and image forming apparatus for detecting an amount of developer based on a change in electric capacitance

A relationship between a light amount of an exposure portion and a surface potential according to a use amount, a first detection light amount corresponding to a prescribed surface potential in the relationship where a use amount of a photosensitive member is a first use amount and a second detection light amount corresponding to the prescribed surface potential in the relationship where the use amount of the photosensitive member is a second use amount, which is greater than the first use amount, are acquired. The exposure portion changes, as an electrostatic image forming light amount, a first image forming light amount representing a setting value under the first use amount to a second image forming light amount representing a setting value under the second use amount on the basis of a ratio of the first detection light amount to the second detection light amount.

A developer container including a frame configured to define a developer containing portion, a first electrode, and a second electrode arranged on a surface of the frame and having a surface opposed to the first electrode, a developer amount in the developer containing portion being detected based on a capacitance between the first electrode and the second electrode.

Developer container for detecting developer amount based on capacitance, developing apparatus, process cartridge, and image forming apparatus

An electrophotographic image forming apparatus for forming an image on a recording material includes an electrophotographic photosensitive member (drum); a developer carrying member; a cleaning blade for cleaning the drum; a developer seal member of a peripheral surface seal type, provided at an end portion of the developer carrying member, for preventing leakage of the developer; and a developer retaining member provided at an end portion of the cleaning blade. With respect to a longitudinal direction of the drum, the developer seal member is disposed in a region where the cleaning blade is provided, an inside end position of the retaining member is located at the same position as or inside an inside end position of the developer seal member, and an outside end position of the retaining member is located at the same position as or outside an outside end position of the developer seal member.

Electrophotographic image forming apparatus and process cartridge

An image forming apparatus includes a rotatable image bearing member for bearing a developer image, a developing device for developing an electrostatic latent image on the image bearing member into the developer image and a cleaning blade. In addition, a controller executes a stop operation of the image bearing member in which the image bearing member is, after being temporarily stopped at an end of an image forming operation, rotated in the same direction as that during the image forming operation and then is rotated in a direction opposite to that during the image forming operation, and a predicting portion predicts a remaining usable lifetime of the image bearing member. In the stop operation of the image bearing member after the remaining usable lifetime is below a threshold, the controller controls an amount of rotation in the direction opposite to that during the image forming operation so as to be smaller than the amount of rotation before the remaining usable lifetime is below the threshold.

Growing community of inventors

Susono, Japan

Taku Watanabe