Ricoh Company, Ltd.

Toshihiro Yamashiro

Masafumi Kimura

Hiromichi Atsuumi

Makoto Inamoto

Jun Nakagawa

Hiroaki Tanaka

Shuichi Suzuki

Daisuke Ichii

Yasuhiro Satoh

Tetsuyoshi Nakata

Yoshimitsu Ogura

Shigeru Yoshigai

Yutaka Shio

Tsuyoshi Hashiguchi

Mizuki Shinkawa

Yoshiyuki Ishiyama

Susumu Katagiri

Takayuki Shitomi

Yasuhide Konishi

A display device includes a light source; a light deflector configured to deflect light emitted from the light source to scan as scanning light in a main scanning direction and a sub-scanning direction; a screen having a scanning area to be two-dimensionally scanned with the scanning light at a predetermined cycle, the scanning area having a first area and a second area that differ in position in the sub-scanning direction; a light receiver disposed on the screen, configured to detect the light scanning in each of the first area and the second area of the screen; and a control unit configured to adjust a position of the scanning light in the scanning area according to the number of scanning lines in each of the first area and the second area.

Display device, display system, mobile object, display control method, and recording medium storing program code

An optical scanning apparatus, an image projecting apparatus, and a mobile object. The optical scanning apparatus includes a light source to emit light, a light deflector to deflect the light emitted from the light source at least in a sub-scanning direction to perform optical scanning on a scan region, a light receiver to receive, within a predetermined range in the sub-scanning direction, the light used for optical scanning performed by the light deflector, and a controller to control the light deflector based on a number of times of light reception of the light receiver at a plurality of positions in the sub-scanning direction within the predetermined range. The image projecting apparatus includes the optical scanning apparatus, and a projection optical system configured to project light emitted from the optical scanning apparatus to the scan region.

Optical scanning apparatus, image projecting apparatus, and mobile object

A control device includes an acquirer, a timing detector, a controller, and a driver. The acquirer acquires an output voltage from a light detector for receiving laser light scanned by a light source and a deflector. The timing detector detects reference timings of the laser light on forward and backward paths in a scanning direction based on the output voltage. The controller generates a control signal for causing the light source and the deflector to draw a forward path image on a scanned surface from time obtained by adding a time to the reference timing on the forward path and to draw a backward path image on the surface from time obtained by adding a time to the reference timing on the backward path. The driver draws the images by driving the deflector, based on the control signal.

Control device, image projection apparatus, and control method

An optical deflection apparatus includes a mirror unit, a pair of elastic supporting units configured to rotatably support the mirror unit around a predetermined axis, at least one drive unit configured to elastically deform the pair of elastic supporting units, and a drive control unit configured to input a drive frequency into the at least one drive unit so as to control the at least one drive unit, wherein a first time interval at which the drive control unit changes the drive frequency in a first temperature range is shorter than a second time interval at which the drive control unit changes the drive frequency in a second temperature range, the second temperature range being at a higher temperature than the first temperature range.

Optical deflection apparatus, head-up display apparatus, optical writing unit, image forming apparatus, and object recognition apparatus

An image display apparatus and a vehicle provided with the image display apparatus. The image display apparatus includes a light source to emit a laser beam, an optical deflector to deflect the laser beam two-dimensionally, and an intermediate image generator to perform two-dimensional scanning twice in a main scanning direction and a sub-scanning direction with the laser beam deflected by the optical deflector to generate an intermediate image of one frame, where the laser beam deflected by the optical deflector draws two scanning lines. In the image display apparatus, the two scanning lines have two different phases for the two-dimensional scanning for a first time and the two-dimensional scanning for a second time, respectively.

Image display apparatus and vehicle

An image display apparatus and a vehicle provided with the image display apparatus. The image display apparatus includes a light source unit to emit a laser beam, an optical deflector to deflect the laser beam two-dimensionally, and an intermediate image generator to perform two-dimensional scanning twice in a main scanning direction and a sub-scanning direction with the laser beam deflected by the optical deflector to generate an intermediate image of one frame, where the laser beam deflected by the optical deflector draws, two scanning lines. In the image display apparatus, the two scanning lines have two different phases for the two-dimensional scanning for a first time and the two-dimensional scanning for a second time, respectively. in the image display apparatus, the two scanning lines have two different starting points for the two-dimensional scanning for a first time and the two-dimensional scanning for a second time, respectively.

An image display apparatus and a vehicle provided with the image display apparatus. The image display apparatus includes a light source unit to emit a laser beam, an optical deflector to deflect the laser beam two-dimensionally, and an intermediate image generator to perform two-dimensional scanning twice in a main scanning direction and a sub-scanning direction with the laser beam deflected by the optical deflector to generate an intermediate image of one frame, where the laser beam deflected by the optical deflector draws two scanning lines. In the image display apparatus, the two scanning lines have two different phases for the two-dimensional scanning for a first time and the two-dimensional scanning for a second time, respectively. In the image display apparatus, the two scanning lines have two different starting points for the two-dimensional scanning for a first time and the two-dimensional scanning for a second time, respectively.

An image forming apparatus includes a recording head for discharging an ink droplet onto a recording medium in a print operation; a maintenance operation unit performing a primary maintenance operation on the recording head after a predetermined time following completion of the print operation; a standing time calculation unit calculating a standing time between a completion time of a secondary maintenance operation performed in the predetermined time and an end time of the predetermined time; an intensity comparing unit comparing an intensity of the primary maintenance operation and an intensity of the secondary maintenance operation; and a selection unit selecting a type of the primary maintenance operation based on the standing time when the intensity of the secondary maintenance operation is greater than the intensity of the primary maintenance operation.

Image forming apparatus, recording head maintenance operation control method, and computer-readable recording medium having a recording head maintenance operation control program

A disclosed electronic apparatus includes a first communication unit for connecting the electronic apparatus and an external device; a second communication unit for connecting the electronic apparatus and other external devices via a network; a first detection unit for detecting a connection status of the first communication unit; a second detection unit for detecting a connection status of the second communication unit; and a power control unit for controlling power to the electronic apparatus. The first detection unit determines the connection status of the first communication unit when the electronic apparatus is turned on. The power control unit monitors the connection statuses of the first and second communication units via the first and second detection units after a connection to the first communication unit is detected and keeps the electronic apparatus turned on while a connection to at least one of the first and second communication units is detected.

Electronic apparatus and storage medium

An image forming apparatus is disclosed that forms an image based on a control signal from an image processing controlling unit that processes input image information into image data. The apparatus includes a carriage that moves in a main scanning direction in accordance with the control signal; a conveyance unit that conveys a recording medium in a sub-scanning direction; an output detection unit that detects motor outputs of the carriage at any plural points when the carriage moves at a constant speed; and a jamming determination unit that compares an average value of the motor outputs of the carriage between the plural points with a predetermined tolerance to determine a conveyance failure.

Image forming apparatus, image forming system, image forming method, control program for eliminating conveyance failure, and information recording medium having recorded thereon control program for eliminating conveyance failure

An image forming apparatus, an image forming method, and a control program therefor. The apparatus includes an image processing control unit to process image information sent from an external device, a carriage to move in a main scanning direction according to a control signal sent from the image processing control unit and having a nozzle to discharge an ink onto a recording medium, a conveyance unit to convey the recording medium in a sub-scanning direction, and a conveyance failure detection unit to detect a status of the recording medium. The image processing control unit identifies a type of a conveyance failure among a plurality of types of conveyance failures based on the status of the recording medium output from the conveyance failure detection unit and sends a conveyance failure correction signal to perform an operation for retracting the carriage to a predetermined or desired position in the main scanning direction.

Image forming apparatus, image forming method, and control program for controlling a carriage upon conveyance failure

An access method for use when switching from recording into an optical disk to reproduction from the optical disk or vice versa is disclosed that comprises a step of calculating a rotating speed nof a motor for rotating the optical disk given that linear velocities in a first access position before the switching and a second access position after the switching are equal, a step of determining whether nsatisfies a pair of expressions n&#x3e;nand n&#x3e;nor a pair of expressions n&#x3c;nand n&#x3c;nwhere nand nare rotating speeds of the motor before and after the switching, a step of changing a control mode from CLV to CAV and the rotating speed from nto nif one of the pairs of expressions is satisfied, and a step of shifting a position to be accessed from the first access position to the second access position.

Access method, information recording and reproducing apparatus, and recording medium

A loading mechanism includes a frame and a tray on which an information recording medium is placeable. The tray includes a groove part and is movable between a first position where the information recording medium is contained completely inside the frame and a second position where the information recording medium is exposed completely outside the frame. The loading mechanism further includes at least three projections arranged on the frame at predetermined intervals along the sliding directions of the tray. The projections include first and second guide and support parts forming the first and second ends of the arrangement of the projections. The first and second guide and support parts come into substantially point or linear contact with the groove part of the tray so as to guide and support the tray when the tray is in the second position.

Loading mechanism, drive unit, and information processing apparatus

A system, method, computer program and apparatus for providing regulating signals for regulating the position of an objective lens relative to a track on a disk. The regulating signals are obtained in response to an access request specifying an access target region on the disk. The tracks of a disc are divided into a plurality of zones, each zone having associated signal regulation information. In response to an access request, the signal regulation information for the zone containing the access target region is used to regulate the position of the objective lens.

Optical disk system with improved signal regulation capability

An optical disk apparatus includes a tilt detection unit detecting the tilt value of an optical disk medium with respect to an optical system. A tilt compensation unit compensates for the tilt of the optical disk medium by adjusting a relative angle between the optical system and the optical disk medium according to the tilt value detected by the tilt detection unit. A tilt detection error estimation unit estimates tilt detection error of the tilt detection unit with respect to a radial position of the optical disk medium at which information is recorded/reproduced by the optical systems by referring to tilt values that are previously detected at a plurality of radial positions of the optical disk medium by the tilt detection unit. The tilt compensation unit has a correction unit that corrects the tilt value according to the tilt detection error estimated by the tilt detection error estimation unit. The tilt compensation unit compensates for the tilt of the optical disk medium according to the tilt value corrected by the correction unit.

Growing community of inventors

Kanagawa, Japan

Toshihiro Yamashiro