Patent application number | Description | Published |
20150062618 | ELECTRONIC DEVICE, AND METHOD FOR CONTROLLING POWER TO CONTROL UNIT OF ELECTRONIC DEVICE - An electronic device includes a power-on control unit configured to instruct a first voltage generation unit to generate a first voltage in accordance with a power-on instruction, determine whether or not the first voltage generated by the first voltage generation unit has become a predetermined voltage or higher, and instruct a second voltage generation unit to generate a second voltage when the power-on control unit determines that the first voltage has become the predetermined voltage or higher; and a power-off control unit configured to instruct the second voltage generation unit to stop generation of the second voltage in accordance with a power-off instruction, and instruct the first voltage generation unit to stop generation of the first voltage after a predetermined time period has elapsed from the power-off instruction. | 03-05-2015 |
20150201100 | IMAGE FORMING APPARATUS, CONTROLLING METHOD THEREFOR, AND STORAGE MEDIUM - An image forming apparatus is disclosed that can specify the cause and the part of an electrical failure with an inexpensive configuration and facilitate the maintenance by a user or an administrator. Power is supplied to function units in the image forming apparatus and a value is detected by a power detection unit. A state of the image forming apparatus is specified by a first control unit that can determine, based on the specified state and the detected value, whether or not there is an electrical failure. If there is a determined electrical failure, the power is supplied separately to the function units so that the first control unit can specify an electrically failed part based on a state of the image forming apparatus estimated at the separate supply and the detected value, and can notify a user or an administrator of the specified failed part. | 07-16-2015 |
20150237227 | SYSTEM, IMAGE FORMING APPARATUS, AND NETWORK CAMERA APPARATUS - A system includes an image forming apparatus and a network camera apparatus that communicates with the image forming apparatus. The image forming apparatus includes a detection unit configured to detect a user of the image forming apparatus and a transmission unit that, in a case where the detection unit detects the user, transmits an imaging request to the network camera apparatus. The network camera apparatus includes an imaging unit, a receiving unit that receives the imaging request transmitted from the image forming apparatus, and a control unit that, in a case where the receiving unit receives the imaging request, controls the imaging unit to image a vicinity of the image forming apparatus which has transmitted the imaging request. | 08-20-2015 |
Patent application number | Description | Published |
20100328417 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes four light sources, a pre-deflector optical system, a polygon mirror, an optical scanning system, etc. The optical scanning system includes deflector-side scanning lenses made of glass, imaging-surface-side scanning lenses made of resin, polarized light splitters, and reflecting mirrors. The deflector-side scanning lenses, the imaging-surface-side scanning lenses, the polarized light splitters, and the reflecting mirrors are arranged in this order on an optical path of light going from the polygon mirror toward drum-shaped photosensitive elements. | 12-30-2010 |
20110002025 | POLARIZATION-SEPARATION DEVICE, OPTICAL SCANNING APPARATUS, AND IMAGE FORMING APPARATUS - A polarization-separation device includes: a beam splitter that includes a beam-separating surface, on which a light beam that contains a first light beam and a second light beam impinges, wherein polarization direction of the first light beam and polarization direction of the second light beam are perpendicular to each other, and incident angle of the first light beam and incident angle of the second beam vary independently while incident into the beam-separating surface; a first polarizer arranged in an optical path of light beams having transmitted through the beam splitter, and allows the first light beam to transmit therethrough; and a second polarizer arranged in an optical path of light beams reflected from the beam splitter, and allows the second light beam to transmit therethrough. | 01-06-2011 |
Patent application number | Description | Published |
20090058979 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device includes a light source, a pre-deflection optical system, a polygon mirror, and a scanning optical system. The pre-deflection optical system includes a coupling lens and a diffraction lens. A light output surface of the coupling lens is a phase shifting surface, while a light output surface of the diffraction lens is a diffractive surface. The absolute value of the focal length of the diffraction lens is longer than the absolute focal length of the coupling lens. | 03-05-2009 |
20090059337 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - A temperature of a scanning optical system is different from a temperature of a light source when an optical scanning device is in operation, and when the both temperatures are assumed to be equal, a diffractive surface of a diffractive optical element is set according to a magnitude relationship between both temperatures when the optical scanning device is in operation such that a deviation amount of an in-focus position of the light flux by the diffractive optical element becomes larger or smaller than a deviation amount for canceling a deviation amount of an in-focus position of the light flux by the scanning optical system. | 03-05-2009 |
20110228368 | OPTICAL SCANNING DEVICE, OPTICAL WRITING DEVICE, AND IMAGE FORMING APPARATUS - An optical scanning device includes a first optical system for guiding light beams emitted from a plurality of light emitting units to an optical deflector, and a second optical system for focusing the light beams to optically scan a surface to be scanned. At least one of the first optical system and the second optical system includes a resin lens having a diffractive surface. The diffractive surface includes a diffractive portion and a refractive portion. A power of the diffractive portion and a power of the refractive portion cancel each other. | 09-22-2011 |
Patent application number | Description | Published |
20090257780 | IMAGE FORMING APPARATUS - In an image forming apparatus that includes an image carrier, a charging unit, a latent-image forming unit that forms a latent image for each color by exposing the surface of the image carrier charged by the charging unit, and a plurality of developing units that sequentially develops latent images formed on the image carrier with toners of different colors including at least cyan, yellow, and magenta, to form a color toner image on a single unit of the image carrier, the developing units further develops the latent images with toners of blue, green, and red, such that the toner images of different colors are not superimposed on a same position. | 10-15-2009 |
20110235132 | OPTICAL SCANNING DEVICE AND IMAGE FORMING DEVICE - An optical scanning device includes a light source that emits first and second light beams, and an optical splitter to which the first and second light beams deflected by an optical deflector are incident. Principal rays of the first and second light beams incident to the optical splitter are nonparallel to each other in a plane orthogonal to a main-scanning direction. Transmitted light from the optical splitter out of the first light beam and reflected light from the optical splitter out of the second light beam are guided to corresponding scanning target surfaces, and transmitted light from the optical splitter out of the second light beam and reflected light from the optical splitter out of the first light beam reach none of the scanning target surfaces. | 09-29-2011 |
20110316959 | OPTICAL SCANNING DEVICE AND IMAGE FORMING APPARATUS - An optical scanning device, arranged on one side of at least two to-be-scanned members in a second direction, and the two to-be-scanned members being arranged in a first direction perpendicular to the second, includes: an illuminating system that emits beams including a first beam and a second beam whose polarization directions are different from each other; an optical deflector that deflects the beams; and a scanning optical system that includes a polarization separation element that transmits one of the first and second beams and reflects the other; a first mirror group including reflecting mirrors for guiding the first beam to a to-be-scanned member; and a second mirror group including reflecting mirrors for guiding the second beam to a to-be-scanned member. Last-stage reflecting mirrors in the first and second mirror groups are arranged on one side of the beams deflected by the optical deflector in the second direction. | 12-29-2011 |
20120127184 | IMAGE PROJECTION APPARATUS, MEMORY CONTROL APPARATUS, LASER PROJECTOR, AND MEMORY ACCESS METHOD - An image projection apparatus includes an input part that inputs image data, a frame memory that stores the image data, a laser oscillator that radiates a laser to a screen, a deflection part including a reflective optical element and configured to oscillate the reflective optical element with respect to two perpendicularly intersecting axes, a storage part that stores coefficient data of a polynomial expression, an irradiation position calculating part that calculates an irradiation position based on a coefficient obtained by using the coefficient data and an oscillation angle of the reflective optical element, an address calculating part that calculates an address in the frame memory corresponding to the irradiation position, a memory control part that reads out pixel data of the address, and a laser drive part that oscillates the laser oscillator in accordance with a luminance corresponding to the pixel data. | 05-24-2012 |
20130063754 | IMAGE FORMING APPARATUS AND VEHICLE ON WHICH THE IMAGE FORMING APPARATUS IS MOUNTED - An image forming apparatus includes an optical scanning device including a light source element configured to radiate a light beam, an optical deflector configured to deflect the light beam two-dimensionally, and a target scanning surface that is transparent and having a two-dimensional image formed thereon by the light beam deflected from the optical deflector, and a projection optical system including a convex mirror and configured to enlarge and project the two-dimensional image on a target projection surface. The target projection surface includes a reflection surface of a half mirror. The half mirror is positioned outside of the image forming apparatus and configured to transmit a part of a light incident on the half mirror and reflect another part of the light incident on the half mirror. | 03-14-2013 |
20150277115 | LENS ARRAY AND IMAGE DISPLAY DEVICE INCORPORATING THE SAME - An image display device includes a light source, an imaging element to form an image with a light beam from the light source, and a lens array illuminated with the light beam forming the image for image display, in which lenses are arranged closely to each other. In which in the lens array a curvature radius of a surface of a border of neighboring lenses is set to be smaller than a wavelength of the light beam. | 10-01-2015 |
20150332103 | PROCESSING APPARATUS, COMPUTER PROGRAM PRODUCT, AND PROCESSING METHOD - A processing apparatus includes a navigator, an environment detector, and a controller. The navigator displays a route between desired geographical locations on a display unit. The environment detector detects a surrounding environment of equipment provided with the display unit. The controller controls the navigator to cause the navigator to search again for and display another route between the desired geographical locations, in accordance with the detected surrounding environment. | 11-19-2015 |
20150334269 | PROCESSING APPARATUS, PROCESSING SYSTEM, AND PROCESSING METHOD - A processing apparatus includes a distance image acquirer, a moving-object detector, and a danger-level determining unit. The distance image acquirer acquires a distance image containing distance information of each pixel. The moving-object detector detects a moving object from the distance image. The danger-level determining unit determines a danger level of the moving object by use of the distance image, and outputs the danger level to a controller that controls a controlled unit in accordance with the danger level. | 11-19-2015 |
20150370069 | IMAGE DISPLAY DEVICE AND VEHICLE INCORPORATING THE SAME - An image display device includes a lens array, and a scanner to two-dimensionally scan the lens array with a light beam for image display, in which each of lenses of the lens array includes a convex surface with different curvatures in two directions orthogonal to the optical axis of the lens and to each other. | 12-24-2015 |