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7450275 |
Document reading lens, document reading lens unit, document reader, and image forming apparatus
A lens for reading an image of a document includes three positive lenses, three negative lenses, a diaphragm, and at least one cemented lens that includes one of the positive lenses and one of the...
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7450274 |
Optical scanning apparatus, image forming apparatus, and beam positioning method
An optical scanning apparatus includes M number of light sources that includes M number of semiconductor lasers and M number of coupling lenses, where M is a positive integer, a deflecting scanning...
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7446912 |
Image reading apparatus
An image reading apparatus according to this invention includes a document conveyance unit mounted movably from a position facing an upper surface of a document table to an upper position for...
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7446910 |
Optical scanning device
A laser-control circuit board is mounted in a scanner to extend substantially parallel to a base plate, a bottom cover, and a top cover of the scanner. A synchronization detection element is...
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7443550 |
Structure of light-source module
The invention discloses an improved structure of light-source module, which arranges a reflection piece of light-source module in an image picking-up device of optical scanner. The invention...
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7440147 |
Optical scanning apparatus having self-propelled light bar assembly
The present invention provides for an optical scanning apparatus having a scanner body and a self-propelled light bar assembly supported within the scanner body. In one example the scanning...
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7436556 |
Image reading apparatus and light conductor used for the same
An image reading apparatus includes a light source for illuminating an image reading region extending in the primary scanning direction, and a plurality of lenses for focusing light reflected on...
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7436555 |
Systems and methods for verifying scanning mode selection
In one embodiment, the present invention is directed to a method for verifying a scan mode selection utilized for a scanned image. The method comprises comparing the scanned image to scan samples...
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7433094 |
Image reading apparatus and light source
A first light source having first and second light transmission areas that extend along the axial direction and face each other, a conveyance unit that conveys the original document sheet such that...
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7433093 |
Method and apparatus for increasing signal to noise ratio
A method for increasing signal to noise ratio is disclosed. The method can automatically detect saturation output voltage of the photosensors via adjusting exposure time or illumination intensity...
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7433088 |
Reference white plate density data adjusting image reading and forming apparatus
An image reading apparatus, including an image sensor configured to receive light and output an image signal in accordance with image data carried in the light, an A/D converter configure to...
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7430068 |
Laser scanner
A laser scanner has a first axis and a second axis extending essentially transversely to the first axis. A measuring head is adapted to be rotated about the first axis. The measuring head has at...
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7428080 |
Image reading apparatus, method of controlling image reading apparatus, program, and computer readable storage medium
This invention has as its object to obtain a high-quality read image from which dust or scratches have been removed by an image reading apparatus which reads image information on a transparent...
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7420716 |
Image reading apparatus
An object of this invention is to provide an image reading apparatus capable of reading an original image at high speed. And other object is to provide an image reading apparatus in which even when...
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7414762 |
Single pass duplex document path for a digital scanner
A document handling system includes an imaging area; a light source located in proximity to the imaging area; a raster imaging scanning system located in proximity to the imaging area; and a looped...
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7414758 |
Four-way calibration of a digital camera using patch information acquired from a scene
A method of improving a digital image captured by a digital camera comprising: providing a digital camera having a memory for storing known values of a color chart having a plurality of color...
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7412199 |
Image scanner having pivotal illuminantor plate
An image scanner has a pivotal illuminator plate. The illuminator plate is pivotally coupled to the main housing of the image scanner and storable within the automatic paper feeder when the...
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7411705 |
Light-source mechanism for optical scanner
A light-source mechanism for an optical scanner includes a chassis, a lamp, a lamp holder and a buffering device between the chassis and the lamp holder. If the buffering device is subjected to an...
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7408684 |
Light source device capable of repressing the light surge
A light source device capable of repressing light surges is fixed in a flatbed scanner to provide a light beam for scanning a document. The light source device includes a bent lamp with bent parts...
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7405842 |
Method for correcting magnification
A method for correcting magnification in a photographic device is disclosed in this present invention. The point of this invention is that the magnification ratio of a photographic device is saved...
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7400429 |
Image reading apparatus
An image reading apparatus according to the present invention can obtain an image light from all areas of a document with uniform brightness, when receiving an image light from an area elongate in...
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7391544 |
Image reading apparatus and image forming apparatus
An image reading apparatus includes an original resting glass sheet for resting allowing an original thereon, a support device for supporting an end portion of the original resting glass sheet, and...
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7391543 |
Image reading apparatus
A document platen. A support member supports an end portion of the document platen from below in a sub scanning direction. A sensor module has a first protruding portion protruding in the sub...
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7391542 |
Optical scanning apparatus, and image forming apparatus using the same
Disclosed in an optical scanning apparatus which includes a deflecting unit comprised of a rotary polygon mirror for deflecting a light beam radiated from a light source unit, and a scanning...
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7391541 |
Image reading system, image reading apparatus, information processing apparatus, control method of image reading apparatus, control method of information processing apparatus and computer readable storage medium
It is an object of the present invention to provide an excellent image reading apparatus that realizes miniaturization and reduces a total reading time at the time of reading a transparent original...
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7388691 |
Method of operating a double-sided scanner
An operating method for a double-sided scanner is provided. A light source of one particular color inside a first group of light sources and a light source of a different color (or the same color)...
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7385735 |
Sheet transport apparatus, image reading apparatus and image forming apparatus
An image reading apparatus including; a supply device for supplying sheets to a reading position, a platen glass plate in the reading position, a platen roller opposed to the platen glass plate, a...
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7385733 |
Imaging optical system and image reading apparatus using the same
To obtain an original reading imaging optical system, with which a carriage integral type scanning system can be readily realized in an original reading system such as a digital copier for which...
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7382502 |
Image processing method and apparatus for recovering reading faults
An image processing apparatus for recovering reading faults produced in time of scanning photographic film due to imperfections present on the film such as scratches, dust or stains. The apparatus...
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7382500 |
Variable reflectance cover
A variable reflectance cover for a scanning system. The cover comprises a backing moveable through a plurality of positions. Moving the backing through the plurality of positions varies the...
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7379217 |
Image reading apparatus
To set at least the main portion of a read original on an image reading apparatus while avoiding a discontinuous portion, the position of the discontinuous portion of photoelectric conversion...
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7375864 |
Document reading apparatus and imaging apparatus implementing same
A document reading apparatus arranged to reduce inconsistencies in the output signals of its linear image sensor is provided. The document reading apparatus includes a linear image sensor, a light...
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7375862 |
Method for multi-function scanner
A method for a multi-function scanner for scanning a document with a laser/anti-counterfeit mark includes the steps of: pre-scanning the document to obtain a preview image; recording a zone of the...
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7365887 |
Image sensor unit
An image sensor unit has an electric discharge light emitting lamp for producing an illumination beam. The lamp includes a first electrode and a second electrode facing each other and defining a...
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7365792 |
Image signal processor for processing image signals of a predetermined format
A signal processor for reducing power consumption. The signal processor includes a signal processing circuit and an output circuit, which outputs an image signal generated by the signal processing...
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7362480 |
Method and system for changing a scanning resolution
A method and system for scanning comprises rotating a scanning chassis of an optical scanner to create an acute angle between the scan line and a scanning direction, such that the scanning chassis...
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7362478 |
Display and scanning assembly for transparencies
A display and scanning assembly is disclosed wherein light reflected from or transmitted through an image being scanned is transmitted to an optical sensor through an optical shutter assembly via a...
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7352496 |
Image scanning device and shading compensation method thereof
An image scanning device and a shading compensation method include reading out a second region of a reference white sheet spaced by a predetermined distance from a white roller prior to reading out...
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7349133 |
Image reading apparatus
An image reading apparatus that detects failure in the white LEDs constituting a white LED array. Failure in the white LEDs is detected by comparison between a prescribed current threshold and the...
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7349132 |
Image reading apparatus
An image reading unit according to the present invention includes a lamp to incorporate a change in temperature conditions to the emitting light amount, the lamp capable of illuminating an reading...
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7345796 |
Image scanner for use in image forming apparatus
An image scanner of the present invention corrects a lens position when a lens moving signal for moving a lens is obtained by extracting a luminance signal from an image signal output from a CCD...
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7336403 |
Optical element and illumination apparatus having same
An object of the present invention is to efficiently shape a light flux emitted from a light source into a linear shape and so as to provide an optical element having high versatility that can be...
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7333249 |
Image reading device
An image reading device includes light-emitting diode chips ( 11 A- 11 C) and a light guide ( 3 ) having a main region ( 3 A) and a subsidiary region ( 3 B). The subsidiary region ( 3 B) includes a...
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7327498 |
Image reader for use in image forming apparatus
An image reader according to the present invention can change the wavelength of the light radiated from an illumination unit, by switching illumination lamps to radiate a light, so that the light...
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7317559 |
Imaging device and imaging method for use in such device
An imaging device which assures high-quality image information free from a line noise by extracting line noise information from a taken image, detecting an existence of an extrinsic line noise in...
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7312905 |
Method for scanner lamp warm-up optimization
A scanning method that provides a quick start to the first scan and maintains the quality level of the final scan is disclosed. The first scan, or preview scan, is done without waiting for the lamp...
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7301679 |
Changeable means for different total tracks and its method
In one embodiment, at least one rotational reflection element is circulated such that one or more reflection surface sets is positioned along an optical path of a scanner. Circulation is provided...
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7289249 |
Image scanner for use in image forming apparatus
In an image reading apparatus according to the present invention, a black reference plate used for shading correction includes a light shielding plate. When the light shielding plate shields an...
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7286271 |
Scanning chassis with a light transparent slot
A scanning chassis is suited for scanning a document. The scanning chassis includes a case, a light source, at least one reflector, a lens assembly and an optical sensor. The case has a light...
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7286270 |
Optical reading document board and optical reader
In an optical-reading document board, an anti-reflection layer is formed by a transparent film and an anti-reflection film is bonded on a document-resting surface of a transparent glass plate. The...
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