Konica Minolta, Inc.

Takashi Kurosawa

Hideo Uemura

Naoki Tajima

Makoto Ooki

Kazuki Ikeda

Akira Taniyama

Masahiko Takahashi

Daisuke Kobayashi

Yoshihiro Inagaki

Akira Yamamura

Atsushi Nagaoka

Mohdmakhtar Nurnabila

An intraoral measurement device includes: a device main body that holds a base end side of a prism by a housing, the housing accommodating an illumination member and an imaging member, a cover member that is attached to the device main body in a state of covering, with a space part interposed in between, a distal end side of the prism arranged to face a measurement target, in which a part arranged to face the measurement target is formed by a light transmission window; and a heat transfer member that extends from the device main body along a non-optical surface of the prism, and transfers heat of the device main body to the light transmission window through abutment of a protruding end provided to protrude from the prism against the light transmission window of the cover member.

Intraoral measurement device

An optical writing device performs writing by scanning an image surface of a photoconductor with light, and includes a light source unit including a light source that emits light, a deflection unit that deflects and scans the light, an optical element unit for the light, and a housing unit that holds the light source unit, the deflection unit, and the optical element unit. The housing unit includes a vibration isolator that isolates vibration transmitted from a vibration antinode where distribution of vibration in a sub direction perpendicular to a scanning direction of the light on the image surface of the photoconductor is maximum to at least one of seat face parts for the light source unit and the optical element unit having optical sensitivity in the sub direction, in a bottom face part of the housing unit, and a rigidity enhancer that increases rigidity of the seat face part.

Optical writing device and image forming apparatus

In an optical writing device that deflects light beams from first and second light source sections and performs scanning by first and second scanning optical systems, in reflective optical elements disposed in the optical axis direction from after the polygon mirror to before a separation mirror, a number of hold points on each of a writing start side and a writing end side in scanning is same, and in reflective optical elements disposed from after the separation mirror up to a surface to be scanned, a number of hold points on a writing start side of the first scanning optical system is same (one) with that on a writing end side of the second scanning optical system, and a number of hold points on a writing end side of the first scanning optical system is same (two) with that on a writing start side of the second scanning optical system.

Provided is an image writing device including a deflector having deflective reflection surfaces for deflecting light flux emitted from a light source and a scanning imaging optical system that condenses the light flux as a light spot on a scanned surface of a latent image carrier, and performing optical scanning on the scanned surface at a constant speed, the image writing device further including: a surface detector that detects a deflective reflection surface that deflects the light flux; a storage that prestores a beam irradiation position in a sub scanning direction corresponding to each main image height on each of the deflective reflection surfaces; and a hardware processor that controls, on the basis of a beam irradiation position in the sub scanning direction corresponding to each main image height on the deflective reflection surface a light quantity of the light flux to be irradiated to the beam irradiation position.

Image writing device, image forming apparatus, and pitch unevenness suppressing method

A drive device includes a drive member, a light source, a marker, a detector, a signal processor and a strain controller. The drive member includes at least a material which generates a plasmon. The drive member generates strain in response to input energy. The marker is formed on a surface of the drive member. Strain occurs in the marker in accordance with a deformation of the drive member and the marker reflects or transmits light emitted from the light source. The detector detects a light intensity of light reflected from or transmitted through the marker. The signal processor calculates an amount of strain which occurs in the marker based on the light intensity. The strain controller controls an amount of strain of the drive member based on the amount of strain calculated by the signal processor.

Drive device, method of controlling strain and computer readable medium storing program

A scanning optical apparatus includes a light source, a deflector and an imaging optical system. The deflector deflects a beam emitted from the light source to scan a scanning surface with the beam in a main scanning direction. The imaging optical system focuses the beam on the scanning surface. The imaging optical system includes a first lens having negative power in a sub scanning direction and a second lens having positive power in the sub scanning direction, in which the sub scanning direction is parallel to the scanning surface and perpendicular to the main scanning direction. The power &#x3c6;1 of the first lens, the power &#x3c6;2 of the second lens and a magnification &#x3b2; in the sub scanning direction of the imaging optical system satisfy the conditions &#x2212;1.2&#x2264;&#x3c6;1/&#x3c6;2&#x2264;&#x2212;0.9 and &#x2212;1.3&#x2264;&#x3b2;&#x2264;&#x2212;0.8.

Scanning optical apparatus and image forming apparatus

A strain sensor includes a light source, a marker which is disposed on a measuring object so that light from the light source is reflected by or transmitted through the marker, a detector which detects the intensity of the light from the marker, and a signal processor which calculates a strain amount based on the detected light intensity. The marker is a flat film including first and second media having different refractive indexes. The second medium is periodically arrayed in the first medium and exists simultaneously with the first medium on a plane parallel to the marker mounting surface. The maximum length of the second medium in a direction parallel to the mounting surface is shorter than the wavelength of the emitted light. The first and second media deform in response to load in a direction parallel to the mounting surface.

Strain sensor and method of measuring strain amount

An image forming apparatus includes: an image reading mechanism configured to read an image from a document; an image forming mechanism configured to print the image read by the image reading mechanism on a recording sheet; and an image inspection mechanism configured to read the image printed on the recording sheet in the image forming mechanism. The image reading mechanism and the image inspection mechanism each include: a light source configured to irradiate a reading target with light; and a solid-state image sensing device on which reflected light from the reading target is made incident, and configured to perform photoelectric conversion operation. Light emitting members forming the light sources of the image reading mechanism and the image inspection mechanism have the same spectral characteristics.

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Hachioji, Japan

Takashi Kurosawa