Ricoh Company, Ltd.

Sony Corporation

Misaki Shimizu

Ippei Fujimoto

Kazuhito Kishi

Yoshiki Yamaguchi

Keisuke Kawabata

Kenji Ishii

Hiroshi Yoshinaga

Takayuki Seki

Takashi Seto

Yukimichi Someya

Yasunori Ishigaya

Haruyuki Honda

Kazunari Sawada

Masahiro Samei

Yukiko Nakajima

Satoshi Muramatsu

Akio Machida

Kunihiko Tomita

Takuma Nakamura

Nobuhiro Suzuki

Mitsuru Akahori

A display device includes a frame that includes a front portion, temple portions, and a pad portion, and is mounted on head of an observer, and an image display device attached to the frame. The image display device includes an image forming device, and an optical device on which light emitted from the image forming device is incident and from which the light is emitted toward the observer. One end portion of the optical device is fixed to a temple portion side of the front portion. Other end portion of the optical device is on a pad portion side of the front portion. A light shielding member that prevents external light from being incident on the other end portion of the optical device from above the other end portion of the optical device is attached to the pad portion side of the front portion.

Display device

A fixing device includes a flexible endless belt formed into a loop and having an inner circumferential surface, a heater to heat the endless belt, and a nip formation assembly disposed inside the loop formed by the endless belt. The nip formation assembly includes a pressure pad made of heat-resistant resin including a hollow filler, and a supplementary thermal conductor having a belt sliding-contact face over which the inner circumferential surface of the endless belt slides. The supplementary thermal conductor is interposed between the endless belt and the pressure pad to conduct heat from the heater in an axial direction of the endless belt. The fixing device further includes a pressure rotator to press against the nip formation assembly via the endless belt to form a fixing nip between the endless belt and the pressure rotator, through which a recording medium bearing a toner image is conveyed.

Fixing device and image forming apparatus incorporating same

A fixing device includes an endless belt being applied with a lubricant on an inner circumferential surface of the endless belt. A pressure rotator presses against a nip formation pad via the endless belt to form a fixing nip between the endless belt and the pressure rotator. A radiant heater heats the endless belt. At least one contact heater heats at least one lateral end of the endless belt in an axial direction of the endless belt. At least one temperature detector detects a temperature of the endless belt. A controller controls the at least one contact heater to generate heat, controls the endless belt to rotate, and controls the radiant heater to generate heat sequentially based on the temperature of the endless belt that is detected by the at least one temperature detector.

Fixing device, image forming apparatus, and image forming method

A fixing device includes a fixing rotator and at least one heater, disposed opposite an inner circumferential surface of the fixing rotator, to heat the fixing rotator. The at least one heater includes a heat generator to generate heat. A lateral end heater is disposed at least at one lateral end of a nip formation pad in a longitudinal direction of the nip formation pad. The lateral end heater heats at least one lateral end of the fixing rotator in an axial direction of the fixing rotator. The lateral end heater includes a base, a resistor, mounted on the base, to generate heat, and an electrode coupled to the resistor to supply power to the resistor. The electrode is disposed outboard from the heat generator of the at least one heater in the axial direction of the fixing rotator.

Fixing device and image forming apparatus

A fixing device includes a fixing rotator formed into a loop and rotatable in a predetermined direction of rotation and a pressure rotator disposed outside the loop formed by the fixing rotator and pressed against the fixing rotator to form a fixing nip therebetween through which a recording medium bearing a toner image is conveyed. A stay is disposed opposite the pressure rotator via the fixing rotator. A heater is disposed opposite an inner circumferential surface of the fixing rotator to heat the fixing rotator. A pressurization member is pressed against the heater via the fixing rotator. A housing is interposed between the stay and the heater. A temperature detector is mounted on the housing to detect a temperature of the heater.

Fixing device and image forming apparatus having temperature detector

A fixing device includes a fixing rotator and a pressure rotator contacting the fixing rotator to form a fixing nip therebetween, through which recording media of a plurality of sizes are conveyed. The recording media create a plurality of non-conveyance spans on a lateral end of the fixing rotator in an axial direction thereof where the recording media are not conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A multi-view thermopile array is disposed opposite an outer circumferential surface of the lateral end of the fixing rotator in the axial direction thereof and angled relative to the fixing rotator to detect a temperature of the fixing rotator. The thermopile array includes an inboard temperature detection element directed to a conveyance span on the fixing rotator where the recording medium of a decreased size is conveyed.

A fixing device includes a first support and a second support to rotatably support a fixing rotator at a first lateral end and a second lateral end of the fixing rotator in an axial direction thereof. A first stopper is mounted on the first support. A second stopper is mounted on the second support. A first skew restraint projects from an outer circumferential surface of the fixing rotator radially at the first lateral end of the fixing rotator in the axial direction thereof. A second skew restraint projects from the outer circumferential surface of the fixing rotator radially at the second lateral end of the fixing rotator in the axial direction thereof. The second skew restraint comes into contact with the second stopper as the fixing rotator moves in the axial direction thereof toward the first support.

Fixing device, belt device, and image forming apparatus

A fixing device includes a fixing rotator and an abutment rotator contacting the fixing rotator to form a fixing nip therebetween through which a recording medium is conveyed. A heater is disposed opposite the fixing rotator to heat the fixing rotator. A thermopile array is disposed opposite an outer circumferential surface of the fixing rotator to detect a temperature of the outer circumferential surface of the fixing rotator. The thermopile array is tilted with respect to the outer circumferential surface of the fixing rotator to cause a bisector dividing a view angle of the thermopile array in an axial direction of the fixing rotator into two equal parts and a rotation axis of the fixing rotator to define an outboard angle and an inboard angle disposed inboard from the outboard angle in the axial direction of the fixing rotator and different from the outboard angle.

A belt-fixing device to fix a toner image on a sheet includes an endless belt, a first roller disposed inside the endless belt, a second roller disposed in contact with the first roller via the endless belt, forming a fixing nip therebetween through which a recording medium passes, and a ring shape edge for controlling movement of the belt in an axial direction, provided on an inner surface of the endless belt. The ring shape edge is positioned between the first roller and the second roller.

A fixing device and an image forming apparatus including the fixing device. The fixing device includes a fixing member having a dielectric body to fix a toner image onto a recording medium by heating and melting the toner image onto the recording medium, a dielectric heating portion to heat the fixing member by dielectric heating, and a pressure member to press against the fixing member to form a nip portion therebetween to nip the recording medium as the recording medium is conveyed therebetween.

Fixing device and image forming apparatus including the fixing device using a dielectric material heated by an electric field

An intermediate transfer device includes a secondary intermediate transfer member configured to transfer a toner image from an image bearing member via a primary intermediate transfer member, for transfer of the toner image onto a recording medium, a heating unit configured to heat the toner image on the secondary intermediate transfer member, and a deformation unit configured to deform the toner image on the secondary intermediate transfer member by application of pressure. A heating region in which the heating unit heats the toner image has a larger area than a deformation region in which the deformation unit deforms the toner image. The deformation region is provided on a downstream side from the heating region relative to a direction of movement of the secondary intermediate transfer member.

Intermediate transfer device and image forming apparatus using same

An intermediate transfer device including an intermediate transfer member, an intermediate transfer part configured to transfer a toner image from an image bearing member onto the intermediate transfer member, a heating member configured to heat the intermediate transfer member to apply heat to the toner image thereon, a deformation member configured to apply pressure to the heated toner image on the intermediate transfer member, and a recording transfer part configured to transfer the compressed toner image from the intermediate transfer member onto a recording medium.

Intermediate transfer device and image forming apparatus

An image forming apparatus includes an image forming mechanism configured to contain a developer and to form an image with the developer and a developer supplier configured to supply the developer to the image forming mechanism. The developer supplier includes a developer container, a conveyer, a sensor, an agitator, and a driver. The developer container contains the developer. The conveyer conveys the developer from the developer container to the image forming mechanism. The sensor is disposed at a predefined position on an interior wall of the developer container and detects the developer at the predefined position in the developer container. The agitator rotates to agitate the developer and includes a paddle formed in a plate-like shape and including an opening through which a part of the developer slips and avoids being paddled by the paddle. The driver drives the conveyer and the agitator at a variable speed.

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Tokyo, Japan

Misaki Shimizu