Patent application number | Description | Published |
20090317137 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - Disclosed is an optical scanning device including a light source including multiple light-emitting elements, the multiple light-emitting elements being arranged in a linear manner, a collimator lens to collimate a light beam from the light source, a light-deflecting device to deflect a light beam having passed through the collimator lens to a medium to be scanned and scan the medium with the light beam, and a rear optical system arranged in an optical path between the collimator lens and the medium to be scanned, wherein the collimator lens deviates an image surface in a direction opposite to an image surface deviation on the medium to be scanned by a nearly same amount as the image surface deviation, the image surface deviation being caused by a change of an image height of the light source, and the change being caused by the rear optical system. | 12-24-2009 |
20100026777 | OPTICAL SCANNING DEVICE, CONTROL METHOD THEREOF, AND IMAGE FORMING APPARATUS THEREWITH - An optical scanning device is disclosed, including: a light deflection part, an imaging optical element, a variable focus optical element, and a focal point control device. The light deflection part repeatedly deflects and scans a light flux emitted from a light source on a scan surface. The imaging optical element forms an image in a vicinity of the scan surface with the light flux. The focal point control device changes a focal distance of the variable focus optical element, which is arranged in an optical path from the light source to the light deflection part, in executing each of deflection scans, and correct an image misalignment on the scan surface due to an optical path difference for each scan angle. | 02-04-2010 |
20130077099 | DROPLET DISCHARGE DETECTION DEVICE AND IMAGE FORMING APPARATUS INCLUDING DROPLET DISCHARGE DETECTION DEVICE - Disclosed is a droplet discharge detection device including a head array unit in which plural nozzles are arranged in a line; a light emitter configured to emit a light beam in a direction in which the nozzles are arranged, wherein the light emitter is disposed at a first end portion of the head array unit and the light emitter has an aperture for limiting a diameter of a light beam; and a light receiver configured to receive a scattered light beam of the light beam generated by a droplet, wherein the light receiver is disposed at a second end portion of the head array unit, the second end portion being opposite to the light emitter of the head array unit. | 03-28-2013 |
Patent application number | Description | Published |
20090027925 | SWITCHING POWER SUPPLY - A buck-boost converter of an H bridge type having a function for initially charging a smoothing output capacitor without a relay and a rush current preventing resistance. A compact and flat power supply is attained by employing a current critical mode H bridge system for a PFC converter and providing a function of initially charging a smoothing output capacitor to a converter circuit. | 01-29-2009 |
20090145637 | Circuit Board and Image Display Apparatus - In a circuit board disposed in parallel to a fixing plane, a guard spacer (abutting member) is disposed on a multi-layer printed circuit board on the side of the fixing plane to suppress deformation of the multi-layer printed circuit board to prevent short circuit if an impact is applied to the circuit board. The guard spacer may be a dummy electronic component or a plate member. An image display using the circuit board is also disclosed. | 06-11-2009 |
20110234939 | LIQUID CRYSTAL DISPLAY DEVICE - A liquid crystal display device with improved thermal exhaustion property, enabling a thickness reduction, includes a backlight including light sources illuminating a liquid crystal panel from a back face, and a chassis holding the backlight. The backlight includes: plural light-source units each including a combination of a LED emitting light in a direction parallel to a display surface of the panel, a wiring board mounted with the LED, and a light-guide plate having translucency for guiding the LED light toward the panel; a metal chassis supporting the light-source units; and a thermally conductive sheet tightly inserted between the metal chassis and a reverse side of the wiring board opposite to the LED-mounted face. A wiring pattern is formed on the reverse side. The metal chassis and the wiring pattern located within a predetermined distance of the LED outer periphery are connected through the thermally conductive sheet. | 09-29-2011 |