Kazuhiko Kawasaki
Kazuhiko Kawasaki, Tsukuba-Shi JP
Patent application number | Description | Published |
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20100027028 | Oblique incidence interferometer - An oblique incidence interferometer has favorable measurement accuracy while achieving miniaturization. The oblique incidence interferometer includes a light source that emits coherent light; a beam dividing unit that divides the coherent light from the light source into a measurement beam and a reference beam, polarizing directions of both beams being perpendicular to each other; a first beam folding unit that folds the measurement beam divided by the beam dividing unit to cause the folded measurement beam to be incident on the measurement object surface at a predetermined angle relative to the measurement object surface; a second beam folding unit that folds the measurement beam reflected by the measurement object surface; and a beam combining unit that combines the measurement beam folded by the second beam folding unit with the reference beam. | 02-04-2010 |
20100199393 | PROBE MICROSCOPE - A probe microscope includes a cantilever having a probe, a displacement detecting optical system, an observation optical system, an objective lens, and a parallel glass. The displacement detecting optical system includes a first light source and a light detecting element. The observation optical system includes a second light source, an image forming lens, and a camera. The objective lens is disposed between the cantilever and the first and second light sources, and is commonly used by the displacement detecting optical system and the observation optical system. The parallel glass is capable of being inserted and retracted freely between the cantilever and the objective lens to adjust a focal point of the objective lens. | 08-05-2010 |
20110007324 | PROBE MICROSCOPE - A probe microscope includes a cantilever having a probe for contact with an object, first and second displacement detection optical systems, and an object lens. The first displacement detection optical system includes a first light source and a first displacement detecting section that detects displacement of the cantilever. The second displacement detection optical system includes a second light source and a second displacement detecting section that detects displacement of the object. The object lens is provided between the cantilever and the first light source and between the cantilever and the second light source. The object lens has a focal position for the light that is emitted from the first light source and has a first wavelength at the position of the cantilever and has a focal position for the light that is emitted from the second light source and has a second wavelength at the position of the object. | 01-13-2011 |
Kazuhiko Kawasaki, Hitachinaka-Shi JP
Patent application number | Description | Published |
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20090057990 | SHEET-SUPPLYING DEVICE - A sheet-supplying device has a sheet-accommodating tray, a raising/lowering unit, a first position sensor, a second position sensor, a controlling unit. The raising/lowering unit raises and lowers the sheet-accommodating tray substantially. The first position sensor detects a first position indicating a position in the stacked direction of one end portion of a topmost sheet stacked in the sheet-accommodating tray. The second position sensor detects a second position indicating a position in the stacked direction of another end portion of the topmost sheet. The controlling unit controls the raising/lowering unit to raise or lower the sheet-accommodating tray based on both the first position detected by the first position sensor and the second position detected by the second position sensor so that one end of the topmost sheet in the stacked status is positioned at a prescribed position in the stacked direction. | 03-05-2009 |
20100164165 | Sheet-Supplying Device - A sheet-supplying device has a sheet-accommodating tray, a raising/lowering unit, a first position sensor, a second position sensor, a controlling unit. The raising/lowering unit raises and lowers the sheet-accommodating tray substantially. The first position sensor detects a first position indicating a position in the stacked direction of one end portion of a topmost sheet stacked in the sheet-accommodating tray. The second position sensor detects a second position indicating a position in the stacked direction of another end portion of the topmost sheet. The controlling unit controls the raising/lowering unit to raise or lower the sheet-accommodating tray based on both the first position detected by the first position sensor and the second position detected by the second position sensor so that one end of the topmost sheet in the stacked status is positioned at a prescribed position in the stacked direction. | 07-01-2010 |
20120153560 | Sheet-Supplying Device - A sheet-supplying device has a sheet-accommodating tray, a raising/lowering unit, a first position sensor, a second position sensor, a controlling unit. The raising/lowering unit raises and lowers the sheet-accommodating tray substantially. The first position sensor detects a first position indicating a position in the stacked direction of one end portion of a topmost sheet stacked in the sheet-accommodating tray. The second position sensor detects a second position indicating a position in the stacked direction of another end portion of the topmost sheet. The controlling unit controls the raising/lowering unit to raise or lower the sheet-accommodating tray based on both the first position detected by the first position sensor and the second position detected by the second position sensor so that one end of the topmost sheet in the stacked status is positioned at a prescribed position in the stacked direction. | 06-21-2012 |
Kazuhiko Kawasaki, Ibaraki JP
Patent application number | Description | Published |
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20090190941 | IMAGE FORMING APPARATUS - An image forming apparatus is disclosed in which a guide member configured to guide a sheet to a nip section between a heating roller and a pressing roller is disposed close to the upstream side of the rollers and on the pressing roller side. A downstream end of the guide member is disposed on the heating roller side with respect to the nip surface between the rollers so that a header of the sheet to be printed is in contact with the heating roller first, and a downstream end of the fixing device introduction guide member is concavely curved. | 07-30-2009 |
20100026983 | LIGHTWAVE INTERFEROMETRIC DISTANCE MEASURING METHOD AND APPARATUS - When the geometric distance L from the body of an interferometer to a target 110 is accurately measured from distance measurement values D | 02-04-2010 |
Kazuhiko Kawasaki, Kyoto JP
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20090072741 | CERAMIC METAL HALIDE LAMP HAVING RATED LAMP WATTAGE OF GREATER THAN OR EQUAL TO 450 W - To provide a ceramic metal halide lamp having a rated lamp wattage of not less than 450 W, which will not cause flicker due to instable arc during operating of the lamp and early blacking of an arc tube. In a metal halide lamp having a rated lamp wattage of greater than or equal to 450 W, which includes: a translucent ceramic arc tube enclosure including: a main tube inside which a discharge space is formed; and two narrow tubes having smaller diameter than the main tube, each connected to either end of the main tube; two electrodes; and a metal halide provided inside the arc tube enclosure, in which one of the two electrodes is disposed so that it protrudes inside the main tube from inside of one of the two narrow tubes, and the other one of the two electrodes is disposed so that it protrudes inside the main tube from the other one of the two narrow tubes, and when the rated lamp wattage is denoted by W (watt), an inside diameter of the main tube by D (mm), an electrode protruding length which is the distance from boundary between the main tube and the narrow tubes to an end of the electrode by L (mm), and the distance between ends of the two electrodes by E (mm), a bulb wall loading G (watt/cm | 03-19-2009 |
Kazuhiko Kawasaki, Tsukuba JP
Patent application number | Description | Published |
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20090021747 | Shape measuring apparatus - A shape measuring apparatus includes a probe for scanning across a surface to be measured, while vibrating up and down; a minute-vibration generation section for vibrating the probe up and down; a vertical movement control section for moving the probe up and down to keep a constant contact force or a constant distance between the surface to be measured and the probe; a scanning section for scanning the surface to be measured with the probe; a displacement sensor for measuring the vertical displacement of the probe and outputting a probe displacement signal; and a signal processing section for obtaining information about the contact force or the distance between the surface to be measured and the probe from a high-frequency component of the probe displacement signal, and for obtaining information about profile of the surface to be measured from a low-frequency component of the signal obtained when the surface to be measured is scanned such that the distance or the contact force is kept constant. | 01-22-2009 |