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| Application No. | Application Title | Issue Date |
| 20120044543 | ORIGINAL READING APPARATUS An original reading apparatus including: a light source configured to illuminate an original; a line image sensor configured to convert light reflected from the original into an analog output signal; an AD converter configured to convert the analog output signal output ... | 02/23/2012 |
| 20120013955 | IMAGE READER, IMAGE FORMING APPARATUS, AND METHOD OF CORRECTING IMAGE DATA The ratio between first reference data which is acquired by scanning the surface of a white member in a state where the size of a gap is substantially equal to that when a document is scanned and second reference data which is acquired by scanning the surface of the whi... | 01/19/2012 |
| 20110261417 | IMAGE READING APPARATUS An image reading apparatus includes a gain setting section that sets a gain of a signal from image sensor, a reference data reading section that reads white and black reference data, an image reading section, a correction data generation section that generates correctio... | 10/27/2011 |
| 20110249302 | IMAGE READING APPARATUS, IMAGE READING UNIT THEREOF, AND REFERENCE MEMBER THEREOF FOR SHADING CORRECTION An image reading apparatus which is capable of performing accurate shading correction with simple arrangement while preventing a reference member from being scratched and paper powder and the like dust from being deposited on the reference member. The image reading appa... | 10/13/2011 |
| 20110188092 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS An image reading apparatus includes a reading glass, a second guide member, and a control section. The reading glass and the second guide member together form a document feed path. The second guide member includes a white reference plate. The control section performs, w... | 08/04/2011 |
| 20110164290 | IMAGE READING APPARATUS In an image reading apparatus, a white reference member for obtaining a reference value used in shading correction in the reading mechanism and an elastic member for cleaning a surface of the transparent member are provided such that respective positions of the white re... | 07/07/2011 |
| 20110109945 | Image scanning apparatus and image forming apparatus An image scanning apparatus includes an image scanning unit that reads an image from an original sheet by scanning an image-formed surface of the original sheet with light in a main-scanning direction and converting light reflected from the image-formed surface into ele... | 05/12/2011 |
| 20100328685 | IMAGE-PROCESSING DEVICE AND IMAGE-PROCESSING METHOD An image-processing device includes: an acquiring unit that acquires image data representing a document which includes a plurality of pages; an extracting unit that extracts, from the acquired image data, a character area in a first page that is at least one of the plur... | 12/30/2010 |
| 20100315687 | IMAGE READING DEVICE, IMAGE READING DEVICE SHADING CORRECTION METHOD, AND IMAGE FORMING APPARATUS An image reading device includes: a light source irradiating a reading target with light; an image sensor receiving incoming reflection light from the reading target and reading the reading target; a plurality of kinds of white reference plates of mutually different bri... | 12/16/2010 |
| 20100290093 | IMAGE READING DEVICE AND IMAGE FORMING APPARATUS The image reading device includes: a reading unit that includes a light source emitting light to irradiate an image on a recording medium transported in a first direction and a light receiving portion that receives light reflected by the recording medium; a transport pa... | 11/18/2010 |
| 20100245936 | IMAGE PROCESSING APPARATUS, IMAGE PROCESSING METHOD, AND PROGRAM An image processing apparatus that performs shading correction processing with the use of white reference data is provided. The image processing apparatus includes a source data acquisition unit and a white reference data generation unit. The source data acquisition uni... | 09/30/2010 |
| 20100214626 | EXPOSURE DEVICE, IMAGE FORMING APPARATUS, EXPOSURE CONTROL METHOD AND COMPUTER-READABLE MEDIUM An exposure device includes a plurality of light-emitting elements, a lighting driver, a first storage, a reader, a shading correction unit and a second storage. The lighting driver drives and lights up the light-emitting elements based on image data. The first storage ... | 08/26/2010 |
| 20100202027 | IMAGE READING APPARATUS A method is provided for processing image data read from a book document placed on a platen of an image reading apparatus. The method includes determining a background pixel of the image data based on a luminance difference or a color difference between neighboring pixe... | 08/12/2010 |
| 20100182652 | IMAGE READING APPARATUS, BLACK CORRECTION EXECUTING METHOD, AND A COMPUTER-READABLE MEDIUM STORING BLACK CORRECTION EXECUTING PROGRAM The present invention provides an image reading apparatus that includes: a photoelectric sensor including plural reading pixels aligned in one direction and output an electric signal depending on the amount of light from an image on the document; a read control section ... | 07/22/2010 |
| 20100177360 | SHADING CORRECTION APPARATUS IN IMAGE SCANNING APPARATUS A shading correction apparatus includes: a light irradiating unit configured to scan an original document; a reference plate located in a scanning area of the light irradiating unit; a detecting unit configured to receive reflected light from the original document or th... | 07/15/2010 |
| 20100103474 | IMAGE READING METHOD, IMAGE READING APPARATUS, AND PROGRAM RECORDING MEDIUM A method for image processing in which an image of a bound document such as a book placed face-down on a document positioning plate is read and processed is provided. The method includes reading the bound document through the document positioning plate, displaying the r... | 04/29/2010 |
| 20100091339 | IMAGE SCANNING APPARATUS AND SHADING CORRECTING METHOD THEREOF An image scanning apparatus includes a first scanning unit to scan a first side of a conveyed document and detect a white area, a direction change unit to re-convey the conveyed document to a duplex scan path, a second scanning unit to scan the white area of the re-conv... | 04/15/2010 |
| 20100073734 | SCANNER, IMAGE CORRECTING METHOD THEREIN, AND IMAGE FORMING APPARATUS HAVING THE SAME A scanner including: a transparent plate; a light emitting unit that emits light to an object on the transparent plate; a sensor to form an image of the object; a focusing lens unit that is arranged on a light path between the transparent plate and the sensor, to focus ... | 03/25/2010 |
| 20090237745 | IMAGE READING APPARATUS, IMAGE FORMING APPARATUS, IMAGE READING METHOD, AND IMAGE FORMING METHOD During a sheet-through operation, for a first original, a shading operation is performed to acquire white data and a light-quantity measuring operation is performed to acquire a reference value. For subsequent originals, only the light-quantity measuring operation is pe... | 09/24/2009 |
| 20090201519 | IMAGE READING DEVICE, IMAGE FORMING APPARATUS, AND IMAGE READING METHOD An image forming apparatus includes an image reading device which reads an image in accordance with a sheet-through method. The image reading device includes a reading device and a control device. The reading device is configured to include a carriage including an optic... | 08/13/2009 |
| 20090195840 | METHOD OF SHADING CORRECTION IN IMAGE READER AND IMAGE PROCESSING APPARATUS The invention includes a brightness reading position control section for reading reference data of a reference plate a plurality of times for different locations by an image reader, a reading data storage section for storing the plurality of brightness reading data on t... | 08/06/2009 |
| 20090185237 | IMAGE READING APPARATUS AND IMAGE FORMING APPARATUS An image reading apparatus including: an image sensor unit having a light source that irradiates light onto an original document transferred to a predetermined image reading position, and a light receiving element that receives reflected light of the light; a white refe... | 07/23/2009 |
| 20090161171 | Image Processing Apparatus An image processing apparatus is provided that includes a scanning unit for scanning a document to obtain scanning data and a control unit. The control unit is configured to specify a shadow region to be modified in the scanning data, execute a first adjusting operation... | 06/25/2009 |
| 20090086279 | IMAGE READING APPARATUS, IMAGE READING METHOD AND IMAGE READING PROGRAM An image reading apparatus in which cross-talk noise occurring between plural reading units is reduced, an image reading method and an image reading program are provided. There are included plural reading units that respectively operates at different timings, a referenc... | 04/02/2009 |
| 20090073504 | IMAGE FORMING APPARATUS AND CONTROL METHOD THEREOF An image forming apparatus and a control method thereof are disclosed. The disclosed image forming apparatus includes a white reference sheet provided at one side of a flat bed, for scanning an object, an image sensor module including an image sensor to detect light ref... | 03/19/2009 |
| 20090067009 | IMAGE READING APPARATUS AND IMAGE PROCESS METHOD Disclosed is an image reading apparatus which reads images in a front side and a back side of a document by passing the document through the image reading apparatus once including a first reading section to read the front side of the document, a second reading section t... | 03/12/2009 |
| 20090015879 | IMAGE PICKUP DEVICE, SIGNAL PROCESSING DEVICE AND SIGNAL PROCESSING METHOD An imaging device for reducing fixed pattern noise caused by dark current or the like. The imaging device (10) includes a solid state imaging device (11) and a signal processor (12). The solid state imaging device (11) includes a plurality of... | 01/15/2009 |
| 20080291505 | METHOD, APPARATUS FOR CORRECTING IMAGE SIGNAL FROM IMAGE SENSOR, AND IMAGING SYSTEM WITH APPARATUS A method of correcting an image signal generated by a charge coupled device (CCD) image sensor in an imaging system is provided. The imaging system stores a number of gamma correction curves, each of which includes a respective correction factor for increasing contrast ... | 11/27/2008 |
| 20080278771 | IMAGE READING APPARATUS Disclosed in an image reading apparatus including a reading unit to obtain an image data by irradiating a document with a light and reading an image of the document, a paper thickness detection unit to detect a thickness of the document to be read by the reading unit, a... | 11/13/2008 |
| 20080218811 | KEYSTONE CORRECTING METHOD AND DISPLAY APPARATUS Disclosed are a keystone correction method and a display apparatus using the same. The keystone correction method can include receiving a plurality of pixel data included in an image signal of a frame; computing a coordinate and data of a correction pixel from 3 row-dir... | 09/11/2008 |
| 20080212115 | IMAGE PROCESSING METHOD, IMAGE PROCESSING APPARATUS, IMAGE READING APPARATUS, AND IMAGE FORMING APPARATUS When a reference image to which a document image is judged as being similar for the first time is not the first document sheet of the document type which contains this reference image, error occurrence is concluded so that the page number indicated by a counter is set t... | 09/04/2008 |
| 20080204820 | IMAGE READING APPARATUS AND SHADING CORRECTION DATA GENERATING METHOD An image reading apparatus capable of generating accurate shading correction data while removing noise. A shading reference plate is arranged at a location having different optical distance between the location and an image sensor in an image reading unit from optical d... | 08/28/2008 |
| 20080170273 | IMAGE SCANNING APPARATUS AND SHADING CORRECTION METHOD The present invention provides a technique that makes it possible to realize highly accurate shading correction regardless of presence of dust or the like in a shading correction plate without preventing a reduction in a size of an apparatus. An image scanning apparatus... | 07/17/2008 |
| 20080137107 | IMAGE READING APPARATUS An image reading apparatus for reading an image on an original document by irradiating it with light and photoelectrically converting reflected light from it by an image pickup unit, including: an original document guide member positionable opposite to the image pickup ... | 06/12/2008 |
| 20080112017 | IMAGE READING DEVICE An image reading device includes a reference member, a reading unit, a first reference value setting unit, a detecting unit, a second reference value setting unit, a determining unit, and a pixel value setting unit. The reading unit scans an image on a document to obtai... | 05/15/2008 |
| 20080100879 | SCANNING DEVICE AND SHADING CORRECTION METHOD THEREOF A scanning device includes a display part, a flat bed on which a manuscript is loaded, a white reference sheet provided at one side of the flat bed, a scanning head to divide the white reference sheet into a plurality of lines and to obtain shading data corresponding to... | 05/01/2008 |
| 20080055668 | Image reading apparatus, image reading method, and program An image reading apparatus includes an image reading sensor reading an image from a document, a light source turned on at a time when the image is read from the document by the image reading sensor, a data acquisition unit acquiring white reference data and black refere... | 03/06/2008 |
| 20080049263 | IMAGE FORMING APPARATUS AND INFORMATION PROCESSING METHOD An image forming apparatus is disclosed. The image forming apparatus comprises an input unit through which a condition for reading image data of a document is input, a reading unit to read the image data under the reading condition, a first storage unit to store the ima... | 02/28/2008 |
| 20070285730 | Document Reading Method, Document Reader, Image Forming Device, And Image Scanner Photoelectric conversion elements of line sensors (CIS22 to CIS26) arranged in a zigzag manner read a white reference plate to acquire a white reference read value A, and a white reference read average value AA is determined from the white reference read v... | 12/13/2007 |
| 20070247672 | One-dimensional lens shading correction In one embodiment, a method for correcting image data for a captured image for lens shading artifacts is provided. The method comprises determining a plurality of one dimensional correction curves that can be applied to the image data to correct for lens shading artifac... | 10/25/2007 |
