Ricoh Company, Ltd.

Yuichi Jibiki

Minoru Matsuo

Toshio Kobayashi

Akiko Tanaka

Hideki Komatsu

Mitsuru Yasuda

Ryosuke Yoshikawa

Takao Kojima

Hitoshi Fujiwara

Yasuhiro Yamaguchi

Tatsuya Sakiyama

Junichi Fujitaka

Hidenori Umeda

A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A [&#x3a9;] of the film and a volume resistivity of B [&#x3a9;&#xb7;cm] of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A&#x3e;B, and when the film has a thickness of T [cm], the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A [&#x3a9;] of the film and the volume resistivity of B [&#x3a9;&#xb7;cm] of the film satisfy a relationship of: A[&#x3a9;]&#xd7;T[cm]&#x3e;B[&#x3a9;&#xb7;cm]. This film can be prepared by a centrifugal molding method.

Film for use in intermediate image transfer member and method of producing endless-belt-shaped film

In the production management system, supervisors of manufacturing and production check section, component check section, and manufacturing technical section set retrieval conditions for retrieving data stored in a database of a step-monitoring server in order to obtain information on daily, hourly and monthly statuses of products in the production management system by using output system clients. The input retrieval conditions are transmitted to the step-monitoring server. Data matching with these retrieval conditions are retrieved from the database of the step-monitoring server. The retrieved data is chronologically processed and displayed on screens of the clients which requested the data.

PRODUCTION MANAGEMENT SYSTEM, CLIENT IN THE PRODUCTION MANAGEMENT SYSTEM, PRODUCTION MANAGEMENT METHOD IN THE PRODUCTION MANAGEMENT SYSTEM, DATA RETRIEVAL METHOD IN THE PRODUCTION MANAGEMENT SYSTEM, AND COMPUTER PRODUCT

A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and a volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A>B, and when the film has a thickness of T &lsqb;cm&rsqb;, the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and the volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film satisfy a relationship of; A&lsqb;&OHgr;&rsqb;'T &lsqb;cm&rsqb;>B &lsqb;&OHgr;&middot;cm&rsqb;. This film can be prepared by a centrifugal molding method.

Method of producing endless-belt-shaped film

A film is made of an insulating matrix resin and an electroconductive material, in which the electroconductive material is dispersed in the insulating matrix resin in such a manner that a surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and a volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film in the direction of a thickness thereof normal to the surface of the film satisfy a relationship of: A>B, and when the film has a thickness of T &lsqb;cm&rsqb;, the electroconductive material is dispersed in the insulating matrix resin in such a manner that the surface resistivity of A &lsqb;&OHgr;&rsqb; of the film and the volume resistivity of B &lsqb;&OHgr;&middot;cm&rsqb; of the film satisfy a relationship of: A &lsqb;&OHgr;&rsqb;&times;T &lsqb;cm&rsqb;>B &lsqb;&OHgr;&middot;cm&rsqb;. This film can be prepared by a centrifugal molding method.

An attachment construction includes an attachment member in which a body of a blind rivet is integral with a head of the blind rivet. The body of the blind rivet is inserted into a fastening hole formed in a base material. The head of the blind rivet is placed in contact with a peripheral edge of the fastening hole of the base material. A boundary region exists between the body of the blind rivet and the head of the blind rivet and the boundary region has a cylindrical shape substantially parallel to the outer peripheral surface of the body of the blind rivet. The boundary region is mounted on a blind rivet fastening device for fastening the blind rivet to the base material. The blind rivet has a diameter smaller than a diameter of the fastening hole in the base material for ease of dismounting the blind rivet from the base material using a dismounting device. The attachment member comprises: a hollow body cover having an opening on a first end in an axial direction of the body of the blind rivet; a hollow cutting blade provided on the dismounting device, the hollow cutting blade having a knife edge with a outside diameter smaller than a diameter of the fastening hole formed in the base material, the knife edge having a diameter smaller than an outside diameter of the body of the blind rivet, and the hollow cutting blade having an opening in the axial direction of the body of the blind rivet in a first end thereof and a through-hole in an end wall in a second opposed end thereof; a pulling shaft provided with a shaft portion and an engaging portion, the shaft portion having a diameter which is smaller than a diameter of the through-hole in the second opposed end of the hollow cutting blade, the shaft portion being gripped by the blind rivet fastening device, and the engaging portion being in engagement with a back of a dismounting device body of the dismounting device; and an elastic member provided between the hollow body cover and the dismounting device body, wherein a rupture part is provided in the shaft portion of the pulling shaft.

Attachment construction of fastening member

A clamping member disassembling device is disclosed in which a clamping member comprising a head portion and a body portion and clamped to base metals, with the body portion being inserted into clamping holes formed in the base metals and the head portion being in contact with a peripheral edge portion of the clamping hole in one of the base metals, is disassembled from the base metals. The disassembling device comprises a cutting means for cutting off the body portion of the clamping member in a direction nearly perpendicular to an axial direction of the body portion, a moving means which causes the cutting means to advance and retreat in the axial direction of the body portion, and a motion changing means which actuates the cutting means in a direction nearly perpendicular to the axial direction of the body portion with an advancing or retreating motion of the cutting means which motion is induced by the moving means.

Clamping member disassembling device and attachment structure thereof, as well as clamping member disassembling method and production system using the method

The dismounting device includes, in order that a fastening member is dismounted from a base material, the fastening member comprising a head and a body, the body being inserted into a fastening hole formed in a base material, the head contacting a peripheral edge of the fastening hole into a fastened state with the body, a cutting member for cutting a boundary region between the head and the body from the head toward the body to separate the head from the body, the cutting member removing the fastening member from the base material.

Production system using the dismounting method for fastening member

Dismounting method for fastening member, dismounting device for fastening member, attachment construction of fastening member and production system using the dismounting method for fastening member

A blind rivet disassembling device comprising a cutting means adapted to get in between a flange portion of a blind rivet and a base metal and cut a body portion of the blind rivet in a direction perpendicular to the axial direction of the body portion and toward a center of a through hole formed through the blind rivet, a push-out means which pushes out a residual mandrel from the flange portion toward a bulge of the through hole along the axial direction of the body portion, a moving means which causes the cutting means to move toward the center of the through hole, and an advancing means which causes the push-out means to advance into the through hole for pushing out the residual mandrel interlocked with the movement of the cutting means.

Blind rivet disassembling device and method and production system using the method

An image fixing roller includes an exothermic phase transition layer which performs a plurality of phase transitions repeatedly from an amorphous state to a crystalline state. The exothermic phase transition layer may include a plurality of exothermic phase transition materials, or a plurality of exothermic phase transition component layers, each of which exothermic phase transition material or component layer has a different crystallization initiation temperature (Tci), a different exothermic peak temperature (Tcp) and a melting point temperature which is higher than that of a toner fixing temperature. An image fixing apparatus using the above-mentioned image fixing roller and a method of fixing toner images on an image receiving material, using the image fixing roller are proposed.

Image fixing roller, image fixing apparatus, and image fixing method

An image fixing apparatus includes such an image fixing roller for thermally fixing images on an image receiving material that includes (a) a core roller member; and (b) an exothermic phase transition layer provided on the core roller member. The exothermic phase transition layer includes an exothermic phase transition material capable of performing reversible phase transition from an amorphous state to a crystalline state and vice versa, and crystallizing at a crystallization temperature which is lower than a predetermined image fixing temperature, with liberation of crystallization heat therefrom, and the exothermic phase transition material having a melting point higher than the image fixing temperature, thereby additionally increasing the temperature elevation rate before the temperature of the outer peripheral surface of the image fixing roller reaches the image fixing temperature to shorten the warm up time of the image fixing roller.

Image fixing apparatus and image fixing roller

An image formation apparatus includes an image fixing roller for performing thermal image fixing, which image fixing roller includes an exothermic phase transition layer capable of performing reversible phase transition from an amorphous state to a crystalline state and vice versa, with liberation of crystallization heat at the phase transition from the amorphous state to the crystalline state, and the crystallization heat is used for increasing the temperature elevation rate for the image fixing roller.

Image formation apparatus

A tensile strength tester feasible of the present invention is feasible for automation and includes a rotating member and a pulling member connected to each other. A torque is transferred from the rotating member to the pulling member with a counterforce being absorbed at the position where the two members are connected. Such a connecting portion is prevented from becoming loose. The tester is capable of measuring a tensile strength when a screw member fitted in a base material is pulled out of the base material.

Tensile strength tester

An image fixing apparatus for thermally fixing images on an image receiving material at a predetermined image fixing temperature, comprising an image fixing device comprising a core member, and an exothermic phase transition layer provided on said core member, comprising an exothermic phase transition material which is capable of performing reversible phase transition from an amorphous solid state to a crystalline state with liberation of crystallization heat therefrom, and vice versa, and has a melting point higher than said predetermined image fixing temperature, a heating device which maintains the temperature of at least an outer surface of said image fixing device at said predetermined image fixing temperature, a first phase transition device which heats said exothermic phase transition layer, thereby having said exothermic phase transition material perform phase transition from said amorphous state to said crystalline state for liberation of crystallization heat therefrom, a second phase transition device which has said exothermic phase transition material perform phase transition from said crystalline state to said amorphous solid state and a pressure application device which rotates in pressure contact with the outer surface of said image fixing device with the application of a predetermined pressure thereto.

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Kanagawa, Japan

Yuichi Jibiki