|
Match
|
Document |
Document Title |
|
|
7639273 |
Image forming apparatus
An image forming apparatus which has a plurality of image forming stations arranged in parallel, each of the image forming stations having a photosensitive drum, and which forms a desired image by...
|
|
|
7623147 |
Optical scanning device and image forming apparatus using the same
An optical scanning device includes a synchronism detecting element for detecting a light beam scanningly deflected by a deflecting surface of an optical deflector, to determine an image-writing...
|
|
|
7602410 |
Apparatus for and method of forming image using oscillation mirror
As a scanning light beam which is scanning and traveling away from an effective image region moves passed the location of a sensor, a horizontal synchronizing signal Hsync is obtained as a first...
|
|
|
7601949 |
Optical scanner device
An optical scanner device, comprising a scanning unit, which casts irradiation light emitted from a light source in an arbitrary direction to scan an observation object, an objective lens system,...
|
|
|
7598972 |
Optical scanning device and image forming apparatus
A deflecting unit deflects a light beam emitted by each of a plurality of light-beam emitting units independently to scan surfaces of different bodies to be scanned. Each of a plurality of...
|
|
|
7595812 |
Image forming apparatus, printer apparatus, facsimile apparatus, and copying machine
An image forming apparatus includes a light source that emits a light beam in a main scanning direction according to image data to be used for image formation, a control unit that controls the...
|
|
|
7589756 |
Optical scanning device, image forming apparatus, optical scanning correcting method, and image forming method
A beam detecting unit detects at least one of a position of an optical beam in a sub scanning direction and a position of the optical beam in a main scanning direction. A color-misalignment...
|
|
|
7586507 |
Printer for recording on a moving medium
A method for forming a pixel ( 20 ) having a predetermined density onto a sensitized recording medium moving in a length direction energizes a pixel exposure source ( 14 ) to begin exposure at the...
|
|
|
7580051 |
Method and apparatus for imaging a printing form
A method for imaging a printing form is particularly suited for a printing form exposer or a printing unit of a press. A plurality of light sources produce image points in a row on the printing...
|
|
|
7576764 |
Device and method for controlling timing for starting image formation, and an image forming apparatus using such device and method
A device and method for controlling timing for starting image formation, and image forming apparatus using such device and method are described. A detector outputs a synchronization detection...
|
|
|
7570386 |
Systems and methods that compensate for scan path errors in a multi-beam electrophotographic imaging apparatus
The positioning of image data written along a laser beam scan path in the scan direction, e.g., the margin and/or line length is adjusted in a manner that compensates for changes in the laser beam...
|
|
|
7567268 |
Image forming apparatus and abnormality detecting method
A light-emission control unit controls an emission of a light beam from a light-beam generating unit based on an input image signal. A light-beam scanning unit deflects the light beam in a main...
|
|
|
7551192 |
Optical-beam scanning apparatus and image forming apparatus
A scanning time is divided by the number of sides of a polygon mirror to obtain a value N. Then, it is determined whether an error has occurred. When no error has occurred, the value N is stored in...
|
|
|
7551195 |
Light scanning device
A light scanning device capable of scanning a light beam on a photosensitive surface includes a light receiving system configured to receive the light beam and output a light receiving signal and a...
|
|
|
7538315 |
Image forming apparatus and control method therefor
This invention makes it possible to prevent any uneven density and degradation in resolution in reciprocal laser scanning using a movable mirror. An image forming apparatus forms an image on a...
|
|
|
7528853 |
Color image forming apparatus and process cartridge
A color image forming apparatus in which an engine controller outputs an operation start signal to write controllers at a timing at which a registration sensor detects a position of a sheet of...
|
|
|
7528995 |
Synchronization signal generator and image forming apparatus
An image forming apparatus using a synchronization signal generator can easily generate a pixel clock that enables both a magnification correction in a main scanning direction and a correction of...
|
|
|
7508408 |
Image forming apparatus capable of effectively initializing a laser drive circuit
An image forming apparatus capable of properly performing an initialization of a control circuit including a laser diode driver circuit, includes a light source, a photoreceptor, a deflector, and a...
|
|
|
7502041 |
Method and apparatus for image forming capable of synthesizing a full color image without causing deviations of color layers
An image forming apparatus includes an intermediate transfer member, a sensor, and two image forming units. Each of the image forming units includes an image carrier, an image writer, two...
|
|
|
7499070 |
Method of diagnosing a state of a horizontal synchronizing signal for an optical scanner
A method of diagnosing a state of a horizontal synchronizing signal is provided for an optical scanner, which includes a rotary polygon mirror having a rotation sensor, a control clock competing...
|
|
|
7489328 |
Image correction in an image forming apparatus and image forming method
A magnification correction controller corrects magnification in a main scanning direction by changing a timing of an image signal based on a time difference between a first detection time in a...
|
|
|
7479626 |
Optical scanner device
An optical scanner device, comprising a scanning unit, which casts irradiation light emitted from a light source in an arbitrary direction to scan an observation object, an objective lens system,...
|
|
|
7471308 |
Frequency modulation apparatus and frequency modulation method
A frequency modulation apparatus capable of reducing a peak level of a radiation noise of a characteristic frequency band due to an image clock. This frequency modulation apparatus is used in an...
|
|
|
7460144 |
Optical scanning device and image forming apparatus
An optical scanning device that includes: a light-emitting unit that emits laser light to a polygon mirror on the basis of a turning-on signal; a sensor unit that detects laser light reflected by...
|
|
|
7456856 |
Clock signal generation circuit, optical scanning apparatus, and image forming apparatus
The present invention discloses a clock signal generation circuit for generating one or more clock signals for performing a scanning operation by scanning a light beam from a light source to a scan...
|
|
|
7450287 |
Optical scanning device and method for detecting synchronization signal
Provided are an optical scanning device and a method for detecting a synchronization signal. In the optical scanning device, a beam incident on a scanning area of an object's surface to be scanned...
|
|
|
7432943 |
Image forming apparatus
An image forming apparatus which has a plurality of image forming stations arranged in parallel, each of the image forming stations having a photosensitive drum, and which forms a desired image by...
|
|
|
7391431 |
Image forming apparatus for correcting magnification of image
A measuring unit measures a time difference between detections of the optical beams by an optical beam detector arranged on either side of an image carrier with respect to a horizontal scanning...
|
|
|
7388597 |
Beam light scanning device and image forming apparatus using same
A beam light scanning device includes an image data processing unit operable to output image-processed data of neighboring pixels in such a way that the data is divided for distribution into first...
|
|
|
7365764 |
Scanning optical apparatus and color image forming apparatus using the same
A scanning optical apparatus includes a light source capable of being modulated, a deflecting element for deflecting and scanning a beam emitted from the light source, a scanning optical element...
|
|
|
7352480 |
Image processing apparatus and image processing method
An image processing apparatus which comprises a RAM acting as a shared memory for storing image data, and an image processing board, connected to the RAM through a PCI bus acting as a...
|
|
|
7345695 |
Image-forming device
A scanning unit of an image-forming device has a polygon mirror for deflecting a laser beam across the surface of a photosensitive member. A disc that rotates together with the polygon mirror is...
|
|
|
7342598 |
Apparatus and method for recording image on printing plate
A printing apparatus with a plate-making mechanism with a data modification part for modifying width of an original image in a subscan direction by computation to obtain a modified image and a...
|
|
|
7330296 |
Synchronous detector, optical scanner, and image forming apparatus
A synchronous detector detects timing of scanning by an optical scanner in an image forming apparatus. The optical scanner has a light source that emits a light beam, a deflecting unit that...
|
|
|
7280129 |
Pixel position specifying method, method of correcting image offset, and image forming device
A pixel position specifying method in an image forming device, the method measuring positions of exposure beams of the respective exposure heads and specifying pixel positions of junctures of the...
|
|
|
7280128 |
Apparatus for and method of recording image
An image recording apparatus includes a scanning part for recording a plurality of unit images individually on a plurality of recording media, the plurality of unit images being to be superimposed...
|
|
|
7277113 |
Method and apparatus for image forming
An image forming apparatus in which the intensity of a light beam used to form a latent image is switched in response to a change in resolution. A laser emits a light beam for forming a latent...
|
|
|
7212224 |
Pixel clock creation method, pixel clock creation device, optical scanning device, and image forming apparatus
In a pixel clock creation method and device, a high frequency clock is created. A scanning time needed to scan a predetermined scanning length is detected in accuracy of half a period of the high...
|
|
|
7209158 |
Scanning line alignment compensation apparatus and method for a laser printer
A scanning line alignment compensation apparatus and method for a laser printer. The scanning line alignment compensation apparatus includes a laser scanning unit (LSU) having a first laser diode...
|
|
|
7187398 |
Characterization of a scan line produced from a facet of a scanning device
A method for refining a length of a scan line, where the scan line is produced from a facet of a scanning device. The method includes the steps of: (a) acquiring a plurality of scan line lengths...
|
|
|
7187400 |
Method and apparatus for compensating for image misalignment due to variations in laser power in a bi-directional raster imaging system
A bi-directional electrophotographic raster imaging system that sweeps a modulated light beam across an imaging region of a photosensitive surface to create both forward-going and reverse-going...
|
|
|
7170544 |
Frequency modulator for modulating image data based on frequency data of scan lines of an image carrier
A frequency modulation device for use in an image forming apparatus. The image formation apparatus includes an image carrier and a laser device for scanning the image carrier along a plurality of...
|
|
|
7158163 |
Light beam scanning apparatus capable of shortening the standby time and image forming apparatus capable of shortening the standby time
A light beam scanning apparatus according to an embodiment of this invention includes a reflection unit for reflecting a light beam, a rotation unit for rotating the reflection unit, a rotation...
|
|
|
7154640 |
Multi-beam scanning apparatus and image forming apparatus using the same
This invention is to obtain a multi-beam scanning apparatus which always executes synchronization detection at the same timing to prevent any jitter, and an image forming apparatus using the...
|
|
|
7139013 |
Laser scanning control apparatus
To provide a laser scanning control apparatus for driving a light source adapted to emit a laser beam in accordance with image data defined in pixels to scan an image bearing member in a main...
|
|
|
7136085 |
Image-forming apparatus and optical scanner
An image-forming apparatus is disclosed that includes at least one imaging optical system forming an electrostatic latent image on the scanning surface of a medium moving in a sub scanning...
|
|
|
7119824 |
Multi-beam optical scanning apparatus, and image forming apparatus using the same
An object is to obtain a multi-beam optical scanning apparatus in which a displacement of an image location of each of light beams emitted from a plurality of light emitting portions is reduced,...
|
|
|
7098937 |
Multi-beam scanning optical system, image forming apparatus, and color image forming apparatus
In a multi-beam scanning optical system, when at least three light fluxes emitted from a light source having at least three light-emitting points are deflected and reflected on a deflection unit...
|
|
|
7092651 |
Image forming apparatus method and storage device storing a program for controlling image forming operation of primarily transferring an image onto an intermediate transfer member
An image forming apparatus which is capable of reducing a color misalignment in a color overlapping process, and a color misalignment due to variation of the circumferential length of an...
|
|
|
7050080 |
Image forming apparatus for controlling image writing by adjusting image clock
In an image forming apparatus which uses a semiconductor laser as a light source, a semiconductor laser is controlled by adjustment of an image write-in clock, and a highly accurate scanning...
|