Ricoh Company, Ltd.

Mitsubishi Heavy Industries Limited

Atsushi Sugai

Takeshi Yamada

Daisuke Ogura

Akira Kono

Suguru Kondo

Yu Matsunaga

Shota Hosoi

Masamoto Nakazawa

Makoto Noda

Masahiro Itoh

Ken Ishii

Yoshiaki Nagao

Satoshi Kamata

Satoshi Narai

Tsuyoshi Fujimoto

Megumu Tsuruta

Masatoshi Ishida

Takahiro Ota

Yoshihiro Inukai

Yuichi Kaneda

Kengo Imaoka

Masafumi Kishi

Takashi Shibutani

Takeshi Hoshino

Shoichi Morimoto

Minoru Arima

Akihiko Egami

A workpiece processing method includes: a section roll forming step of subjecting a flat plate shaped workpiece to forming to impart a prescribed cross-sectional shape thereto; a solution heat treatment step of subjecting the workpiece, after the section roll forming step has been performed, to solution heat treatment; a contour roll forming step of subjecting the workpiece, after the solution heat treatment step has been performed, to forming to bend the workpiece into an arcuate shape; and a stretch forming step of subjecting the workpiece, after the contour roll forming step has been performed, to forming to impart a curved shape, following a curved surface of a die, to the workpiece by bringing the workpiece into contact with the curved surface and inputting a tension load to the workpiece.

Workpiece processing method and processing device

An illuminating device, an image reading device, and an image forming apparatus. The illuminating device includes a plurality of first light sources arrayed on a circuit board, the first light sources having a plurality of first light emitting surfaces through which light is emitted, and a second light source disposed on an upstream side of the first light sources in an irradiation direction of the light. In the illuminating device, the second light source has a second light emitting surface through which light is emitted, and the second light source has a directivity angle different from a directivity angle of each one of the first light sources. The image reading device includes the illuminating device, and an imaging device to receive the light reflected by a document to capture an image of the document.

Illuminating device, image reading device, and image forming apparatus with multiple light sources

A processing device processes a frame-shaped workpiece which extends in a prescribed extension direction, and includes, integrally, a plate-shaped web surface portion, a plate-shaped first flange portion that bends and extends from one end of the web surface portion, and a plate-shaped second flange portion which bends from the other end of the web surface portion and extends in the opposite direction to the first flange portion. The processing device includes a shaping device which conveys the workpiece in the extension direction, and an exit side pinch roll device provided further downstream, in the workpiece conveying flow direction, than the shaping device. The exit side pinch roll device includes a first roll which presses a central region of an upper surface side of the web surface portion, and a second roll which presses a central region of a lower surface side of the web surface portion.

Processing device, and method for controlling processing device

An image reading apparatus includes a light source to emit at least light in a first wavelength range and light in a second wavelength range, a background member having different light reflectances in the first and second wavelength ranges, an imaging device, and circuitry. The imaging device receives reflected light from the background member irradiated with the light in the first wavelength range, and generates first read information. The imaging device further receives reflected light from the background member irradiated with the light in the second wavelength range, and generates second read information. The circuitry detects presence or absence of a first foreign substance based on a difference in reading level of the first read information generated by the imaging device; and detect presence or absence of a second foreign substance based on a difference in reading level of the second read information generated by the imaging device.

Apparatus and method for detecting foreign substance based on a difference in reading level of reflected light in a first wavelength range and a second wavelength range

Provided is a workpiece retention device that retains a frame which includes a workpiece main body and a lip flange and a base flange that are provided to the workpiece main body, wherein: the workpiece retention device comprises a plurality of grippers that are aligned in the lengthwise direction of the frame, and a horizontal movement mechanism and a vertical movement mechanism that move the plurality of grippers; the gripper each include: a lower block, a workpiece support pin that is provided to the lower block and that supports the frame, an upper block that can move toward the base flange of the supported frame, a block movement mechanism that moves the upper block; and a suction mechanism that is provided to the upper block and that suctions the workpiece main body on the base flange side.

Workpiece retention device and workpiece retention method

A lighting device includes a light source, a board, and a light guide. The light source emits light. The board mounts the light source on a mount surface perpendicular to a light emission surface of the light source. The light guide has an incident surface which the light emitted from the light source enters. The incident surface is opposed to the light emission surface. The light guide extends from the incident surface in a direction of the emitted light and is bent toward an irradiated surface of an irradiation target on a way of the light guide. The board is disposed such that an opposite surface of the board opposite the mount surface is opposed to the irradiated surface of the irradiation target.

Lighting device including a board to mount the light source on a mount surface opposite a cover, image reading device, and image forming apparatus

A plate-shaped workpiece forming method of post-machining a pocket () on a curved inner surface of a plate-shaped workpiece () in a state where the plate-shaped workpiece () curved by a curving machine () is spread flat. The method includes a curving step (A) of setting a net curve radius (R) obtained by adding a curve radius contraction amount (R) due to spring-in to a finished curve radius (R) of a plate-shaped workpiece (), taking into account an amount of contraction of the curve radius of the plate-shaped workpiece () between before and after machining of a pocket () due to spring-in, and curving the plate-shaped workpiece () so as to achieve the net curve radius (R); and a pocket machining step of post-machining the pocket () by flatly spreading the curved plate-shaped workpiece ().

Plate-shaped workpiece forming method

A lens unit includes a tube lens; a single lens arranged at a downstream side with respect to the tube lens in an optical incidence direction; and a supporting member that supports the tube lens and the single lens. Reflection light from a document is condensed on an image sensor by the tube lens and the single lens to form an image. An end surface part, not facing the tube lens, of the single lens is in direct contact with the supporting member.

Lens unit, image reading device, and image forming apparatus

An image reading device includes a frame, an image reading unit, a guide, a biasing member, and an adjuster. The image reading unit reads, while moving in a predetermined direction, image information of a document placed on an exposure glass. The guide extends in the predetermined direction and is supported by the frame, to engage and guide the image reading unit to move the image reading unit in the predetermined direction. The biasing member biases the guide in a direction against a direction in which the guide bends due to weight of the guide and weight of the image reading unit. The adjuster adjusts a biasing force of the biasing member against the guide.

Image reading device and image forming apparatus including same

Provided is a molding method for a plate-shaped workpiece including forming a concave portion () at one surface () of a plate-shaped workpiece (), and bending the plate-shaped workpiece () having the concave portion () such that the one surface () becomes a concave surface and a rear surface () thereof becomes a convex surface.

Molding method for plate-shaped workpiece, and molded article

An image reading device that can be incorporated in an image forming apparatus includes a housing including a first housing member having a document reading area and a second housing member attached to the first housing member, a document reading unit disposed inside the housing to read a document while moving in a sub-scanning direction of the housing, a document reference line formed on the first housing member to position the document placed on the document reading area in the sub-scanning direction, and a reference position detector positioned on a plane surface of a square that extends perpendicular to the document reading area along a main scanning direction of the document reference line to detect a reference position of the document reading unit as the document reading unit moves in the sub-scanning direction.

Growing community of inventors

Tokyo, Japan

Atsushi Sugai