Canon Kabushiki Kaisha

Kohei Matsuda

Tsutomu Shimano

Yuki Nishizawa

Kentaro Kawata

Shinya Yamamoto

Tetsuya Kobayashi

Masaaki Sato

Atsushi Toda

Tatsuya Suzuki

Shinichi Agata

Koichiro Takashima

Masahiro Yoshida

Jun Miura

Yasushi Katsuta

Takashi Mukai

Kuniaki Tamagaki

Taku Watanabe

Masato Koyanagi

Shun Sato

Koji Nishikawa

Yuhei Terui

Hiroki Ogino

Nobuo Oshima

Shohei Yamashita

Shinjiro Toba

Yosuke Kashiide

Satoshi Nishiya

Yuta Isobe

Takahiro Ikeda

Takashi Kase

Kouki Yano

Yusuke Usui

Hiraku Sasaki

Junko Hirata

Koji Yamaguchi

Toru Oguma

Hideaki Hasegawa

Akira Kuroda

Kentarou Kawata

Kaori Noguchi

Takuya Kitamura

Hiroomi Matsuzaki

Makoto Hayashida

Masanori Tanaka

Takaaki Tsuruya

Masao Uyama

Tomoaki Nakai

Masaaki Matsushita

Fumito Nonaka

Kazuki Matsumoto

Tetsuya Sano

Tomonori Matsunaga

Takayuki Kanazawa

Shunsuke Mizukoshi

Kenji Takagi

Masaki Shimomura

Ryosuke Kanai

Yuji Moriki

Kazunori Hashimoto

Tetsuya Nishiguchi

Yasunori Toriyama

Shigeto Tamura

Hirokazu Fujino

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

The powder adhesive comprises a thermoplastic resin and particles of an aromatic compound, wherein the particles of an aromatic compound are particles of a compound that has an aromatic ring and an azo bond bonded to the aromatic ring, or are particles of a compound comprising a heteroaromatic ring comprising nitrogen atom; the thermoplastic resin comprises an ester group; and, designating Es (mmol/g) as an ester group concentration in the thermoplastic resin, M (mass %) as a content of the aromatic compound particles in the powder adhesive, and N (mmol/g) as a nitrogen atom concentration in the aromatic compound particles, Es is from 1.0 mmol/g to 4.5 mmol/g, M is from 1.0×10mass % to 1.0×10mass %, and N is from 5.0 mmol/g to 15.0 mmol/g.

Powder adhesive and bonded article

An electrophotographic developer set comprising a toner, and a powder adhesive, wherein the powder adhesive comprises a crystalline polyester resin, and a thermoplastic resin other than the crystalline polyester resin; the amount of the crystalline polyester resin in the powder adhesive is 21% by mass or more; the melting point of the crystalline polyester resin is 55° C. to 100° C.; in a viscoelasticity measurement, where Gt'(100) denotes a storage elastic modulus of the toner at 100° C. and Gb′(100) denotes a storage elastic modulus of the powder adhesive at 100° C., Gb′(100) is 1.0×10Pa or less and Gt′(100)/Gb′(100) is 1.2 or more.

Electrophotographic developer set comprising toner and powder adhesive, and method for producing bonded product

An electrophotographic developer set comprising a toner comprising a thermoplastic resin and a wax, and a powder adhesive comprising a thermoplastic resin and a wax, wherein where Ea (mmol/g) denotes an ester group concentration of the wax contained in the toner, Na (mass %) denotes a content of the wax in the toner, Eb (mmol/g) denotes an ester group concentration of the wax contained in the powder adhesive, and Nb (mass %) denotes a content of the wax in the powder adhesive, the Ea, the Na, the Eb and the Nb satisfy the following formulae: 0.00≤Ea≤2.45, 2.50≤Eb≤3.60, and 0.80≤Nb/Na.

Electrophotographic developer set comprising toner and powder adhesive, method for producing bonded product, and powder adhesive

An image forming apparatus, to which a cartridge including a developer accommodating portion for accommodating a developer is detachably mountable, includes an image bearing member, an exposure unit configured to expose the image bearing member to light to form an electrostatic latent image on the image bearing member, a light receiving sensor provided in the cartridge and configured to receive the light emitted from the exposure unit, and a controller configured to detect vibration of the cartridge from a light reception value of the light received by the light receiving sensor. In a case in which the cartridge is removed from the image forming apparatus, the light receiving sensor is removed from the image forming apparatus together with the cartridge.

Image forming apparatus

An image forming apparatus includes an image forming portion, a fixing portion configured to heat the toner image formed on the sheet by the image forming portion and fix the toner image to the sheet, a folding portion configured to fold the sheet having passed through the fixing portion such that a surface of the sheet to which the powder adhesive is applied is inside, and a bonding portion configured to heat the sheet folded by the folding portion and bond the sheet by the powder adhesive. A relationship of Tmax1>Tmax2 is satisfied, where Tmax1 (° C.) is a highest temperature of the powder adhesive when being heated by the fixing portion and Tmax2 (° C.) is a highest temperature of the powder adhesive when being heated by the bonding portion.

An image forming apparatus includes, an image forming portion configured to form a toner image on a sheet using printing toner and apply powder adhesive on the sheet, a fixing portion configured to heat the toner image formed on the sheet and the powder adhesive applied on the sheet by the image forming portion and fix the toner image and the powder adhesive to the sheet, and a bonding portion configured to bond the sheet with the powder adhesive by reheating the sheet having been heated by the fixing portion. The bonding portion is arranged above the image forming portion.

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

Provided is an electrophotographic developer set having a toner and a powder adhesive, wherein the toner comprises a thermoplastic resin A; the powder adhesive comprises a thermoplastic resin B and a wax A; the wax A has two or more ester groups in the molecule; the thermoplastic resin B has an ester group; and in a viscoelasticity measurement, with Gt'(100) (Pa) being a storage elastic modulus at 100&#xb0; C. of the toner, and Gb&#x2032;(100) (Pa) being a storage elastic modulus at 100&#xb0; C. of the powder adhesive, Gb&#x2032;(100) is 1.00&#xd7;10Pa or less, and Gt&#x2032;(100)/Gb&#x2032;(100) is 1.20 or more, as well as a method for producing a bonded product using the above electrophotographic developer set.

Electrophotographic developer set including toner and powder adhesive, and method for producing bonded product

Provided are a cleaning member that removes a developer from the surface of an image bearing member that is attached to an opening of a frame; a transport member that transports developer removed from the surface of the photosensitive member drum by the cleaning member, from an opening side of the frame towards an opposing deep side; and a driving unit for driving the transport member such that the transport member moves relatively to the cleaning member. The transport member is driven by the driving unit such that an absolute value of maximum acceleration at the time of movement of the transport member in a direction from the opening side of the frame towards the deep side is smaller than an absolute value of maximum acceleration at the time of movement in a direction from the deep side towards the opening side.

Cleaning unit, cartridge, image forming apparatus

Provided are a cleaning member that scrapes developer from a photosensitive drum attached to an opening of a cleaning frame, and a transport member that transports scraped developer from an opening side of the frame towards an opposing deep side. The transport member is driven such that an absolute value of maximum acceleration at the time of movement of the transport sheet in a direction from the opening side towards the deep side is smaller than an absolute value of maximum acceleration at the time of movement in a reverse direction of the former direction. In the longitudinal direction of the photosensitive drum, the width of the transport member is smaller than an abutting width of an abutting portion of the cleaning member with the photosensitive drum, and ends of the transport member in the longitudinal direction are positioned inward of ends of the abutting portion.

Provided is a remanufacturing method of a developer accommodating unit including a flexible container provided with an opening and configured to accommodate developer, and a frame member configured to accommodate the flexible container. The remanufacturing method includes refilling the developer into the flexible container.

Remanufacturing method of developer accommodating unit

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Fujisawa, Japan

Kohei Matsuda