Fujifilm Corporation

Fuji Photo Film Company, Limited

Fuji Photo Co., Ltd.

Yutaka Korogi

Hiromi Ishikawa

Masahiro Ohba

Takashi Fukui

Shogo Yamazoe

Tadashi Kasamatsu

Norihisa Takada

Keiichi Yamana

Kazumasa Hattori

Tatsuya Nitta

Norihasa Takada

A recording medium lift detection apparatus for detecting a lift of a recording medium that is conveyed on a predetermined conveyance surface along a predetermined conveyance path, includes: a light projection/receiving, a light projection parallel flat plate, a light projection turning device, a control device and a recording medium lift detection control device.

Recording medium lift detection apparatus and inkjet recording apparatus

An image forming apparatus comprising: a conveying unit; a liquid droplet jetting head that jets liquid droplets onto a recording medium conveyed by the conveying unit; an uplift amount detection unit that is provided at the recording medium conveying direction upstream side of the liquid droplet jetting head, projects and receives light along the conveying unit, and detects an uplift amount of the recording medium; a control unit that lowers the conveying speed of the conveying unit or separates the liquid droplet jetting head from the conveying unit when the uplift amount detected is a threshold value or greater; a temperature detection unit that detects temperatures; and a correcting unit that corrects the threshold value or the uplift amount based on the temperature difference between a temperature detected at the periphery of the uplift amount detection unit and a temperature detected at the periphery of the liquid droplet jetting heads.

Image forming apparatus

A paper floating detection apparatus is arranged at a conveyance path of a conveyance device which holds paper on a conveyance surface and conveys the paper in a conveyance direction while causing a surface of the paper to face a droplet ejection head. The detection apparatus includes: a light emission unit and a light reception unit arranged to face each other across the conveyance path, such that an optical path of detection light emitted from the light emission unit and received by the light reception unit is substantially perpendicular to the conveyance direction, floating up of the paper from the conveyance surface being detected by detecting that the conveyed paper has shielded the detection light; and an air flow diverting guide member which is arranged in a periphery of the optical path and configured to prevent inflow of air having a temperature differential sufficient to affect the optical path.

Paper floating detection apparatus, paper conveyance apparatus and image recording apparatus

A paper floating detection apparatus which detects floating of paper conveyed along a prescribed conveyance path on a prescribed conveyance surface, includes: a paper floating detection device which includes a light emission unit and a light reception unit disposed so as to be mutually opposing across the conveyance path, and detects whether the paper floats or not according to whether a detection beam emitted parallel to the conveyance surface from the light emission unit toward the light reception unit in a position at a prescribed height from the conveyance surface is received by the light reception unit or not; a light emission parallel flat plate which is disposed in front of the light emission unit in such a manner that the detection beam emitted from the light emission unit passes through the light emission parallel flat plate, and which is provided rotatably about an axis parallel to the conveyance surface and perpendicular to the detection beam in such a manner that the height of the detection beam emitted from the light emission parallel flat plate after passing inside the light emission parallel flat plate varies according to rotation of the light emission parallel flat plate; and a light emission parallel flat plate rotation driving device which drives the rotation of the light emission parallel flat plate.

Paper floating detection apparatus and inkjet recording apparatus

There is provided a mode locked laser device including: a cavity, the cavity having a semiconductor saturable absorbing mirror and a negative dispersion mirror that controls group velocity dispersion within the cavity, disposed in a straight line; a solid-state laser medium, disposed in the cavity and outputting oscillating light due to excitation light being incident thereon; an excitation unit that causes the excitation light to be incident on the solid-state laser medium; and a cavity holder, the light incident face of the semiconductor saturable absorbing mirror attached to one end of the cavity holder, the negative dispersion mirror attached to the other end of the cavity holder, and the cavity holder integrally supporting the semiconductor saturable absorbing mirror and the negative dispersion mirror.

Mode locked laser device

A spatial light modulating method performs spatial light modulation of light produced by a light source. The method includes forming an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material, using an image-sided telecentric optical system. The method further includes altering an axial air separation, upstream of the photosensitive material, to thereby adjust a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.

Projecting exposure method

A spatial light modulator performs spatial light modulation of light produced by a light source. An image-side telecentric image forming optical system forms an image of a two-dimensional pattern of the light, which has been obtained from the spatial light modulation, on a photosensitive material. An axial air separation adjusting section is located between the image forming optical system and the photosensitive material. The axial air separation adjusting section alters an axial air separation between the image forming optical system and the photosensitive material and thereby adjusts a focusing point at the time of the formation of the image of the two-dimensional pattern of the light.

Projecting exposure apparatus

An image recording apparatus for focusing an image recored on an original onto a film so as to form an image on the film. The apparatus has a movable original table, a scanning mirror device adapted to be moved in accordance with the movement of the original so as to scan the image on the original, and a lens for focusing the light reflected from the scanning mirror onto the film which is held stationary. Since the lens and the film are not required to move, the image can be focused on the film with a high degree of precision.

Growing community of inventors

Kanagawa-ken, Japan

Yutaka Korogi