Abstract:
PROBLEM TO BE SOLVED: To provide a contact image sensor having a structure for facilitating the alignment of a light-receiving element array substrate in order to prevent the occurrence of ghost images. SOLUTION: The contact image sensor comprises: a light source 20 having a light-emitting element array; a slit 22; a lens 24; a light-receiving element array substrate 26 on which a light-receiving element array 25 is mounted; and a housing 28 for containing them. Four leads 30 for power supply are provided on one end of the light source 20. Four U-shaped depressions 32 are formed on one end of the light-receiving element array substrate 26 so that the leads 30 pass through them. Each of the depressions 32 has a large enough width for the thickness of each of the leads 30. COPYRIGHT: (C)2008,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide a structure capable of preventing the increase in time and effort derived from the adjustment of the relative position of members, when adjusting the relative position between two members. SOLUTION: A lens block 33 is provided with an image formation lens system 31, image sensor 33, and a structure 35. The image formation lens system 31 is provided with a lens 40. The image sensor 33 is provided with a line type photoelectric conversion element 42. The structure 35 is provided with a receptacle stand 47, a second material 48, and a first positioning mechanism 49. The receptacle stand 47 wherein the image formation lens system 31 is fixed is provided with a first flat wall 55. The second material 48 has a second flat wall 62 piled up and fixed to the first flat wall 55, and the image sensor 33 is fixed. The first positioning mechanism 49 is provided with a first cut 71 formed in the first flat wall 55, and a second cut 72 formed in the second flat wall 67. The second cut 72 is extended to the back more deeply than the first cut 71. COPYRIGHT: (C)2007,JPO&INPIT
Abstract:
A heating element adjusts the curvature of a cylindrical wobble correction mirror to compensate and correct the scan line bow for an optical scanner. A current applied through the heating element along one side of the mirror will cause the mirror to bend vertically for a horizontal beam to adjust the scan line bow for a single beam and approximately equalize the scan line bow for multiple beams.
Abstract:
PROBLEM TO BE SOLVED: To provide an image scanner capable of suppressing image deterioration caused by temperature variation, without impeding productivity. SOLUTION: A substrate 22 having an image sensor 21 mounted thereon includes a round hole 22A and an oblong hole 22B. A bracket 23 includes a support section 23A having a screw hole 23C, and a support section 23B. When mounting the bracket 23 onto the substrate 22, first a screw 24 is screwed through the round hole 22A to the screw hole 23C, thereby fixes the substrate 22 onto the support section 23A. Next, a screw 25 is screwed through the oblong hole 22B to the screw hole 23C disposed on the support section 23B, and the substrate 22 is supported by the screw 25. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
PROBLEM TO BE SOLVED: To provide an image reader which adopts an off-axial optical system and in which an imaging mirror and a CCD-mounting-position adjusting means are fixed by a highly rigid structure and since the relative position between reflecting mirrors and imaging mirrors can be set highly accurately, adjusting only the CCD-mounting position allows a required specification of the read image to be met and the imaging mirror can easily be adjusted without distorting the reflecting surface when necessary. SOLUTION: The reflecting mirrors, the imaging mirrors, and the CCD-mounting-position adjusting means are positioned directly to reflecting-mirror supporting sections, imaging-mirror supporting sections, and CCD supporting sections, which are integrated with a carriage casing, and fixed to them. The CCD is fixed to the carriage casing with the CCD-mounting-position adjusting means. An imaging mirror close to a diaphragm and adjacent to the image is supported by a mirror adjusting plate. The position of the imaging mirror is adjusted by displacing the mirror adjusting plate. COPYRIGHT: (C)2005,JPO&NCIPI
Abstract:
An image forming apparatus includes DMA control units each of which is provided with DMA controllers. Each DMA controller is provided with a plurality of data buffers respectively corresponding to different addresses in a subscanning direction. Each of a predetermined number of pixel data in a main scanning direction is stored in an associated one of the data buffers. Pixel data stored in each of the data buffers are output to an image memory based on the address in the subscanning direction, which corresponds to the associated data buffer.
Abstract:
PROBLEM TO BE SOLVED: To solve the problem that interpolation based on pixel data which do not exist originally or have been located at a position wherefrom a pixel is removed is liable to be a cause of deterioration of an image. SOLUTION: Error characteristics in the sub-scanning direction for scanning in an ideal main scanning direction of scanning means which scan in the main scanning direction respectively and are capable of scanning in parallel an image for multiple lines are stored beforehand in a curvature characteristic memory 106, and a line to be selected by a line selector 102 is changed over, according to a line changeover position in the main scanning direction based on the error characteristics and to a corrected pixel position. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
PROBLEM TO BE SOLVED: To provide an apparatus for reading images and a device for adjusting mirror thereof, which can carry out the scanner mirror adjusting operation efficiently and easily and improve a working efficiency. SOLUTION: The apparatus for reading images includes: a first carriage 30 having a lamp 33 for exposing a manuscript 35 and a first reflection mirror 34 for reflecting reflected light from the manuscript 35; a second carriage 32 including second and third reflection mirrors 37, 38 for returning the reflected light from the first carriage 30; an imaging optical unit 27 for imaging of the reflected light from the third reflection mirror 38 on an image sensor 26; a body casing 20 which accommodates at least the first and the second carriages 30 and 31, the imaging optical unit 27, and the image sensor 26 and has a top face covered with a manuscript glass 21 on which the manuscript is placed, and includes a hole 65 covered with a removable member on part of the surface thereof; and a mirror angle adjusting mechanism 55 which is provided on an end of the second reflection mirror and adjusts the angle of the second reflection mirror. The mirror angle adjusting mechanism 55 is capable of adjusting the angle of the second reflection mirror 37 from the hole 65. COPYRIGHT: (C)2006,JPO&NCIPI
Abstract:
The present invention is a method and apparatus for restoring or correcting digital images scanned in the presence of mechanical vibration, thereby improving the quality of the output image. In a document scanner, a linear sensor moving relative to a document placed upon a platen is scanned in a manner wherein fluctuations in the nominal scanning velocity are observed. Recognizing that the output of a single photosensor in the linear sensor array is proportional to the integrated irradiance received by the sensor as it scans through an exposure region, when vibratory motion of the sensor array is considered, the actual size of the exposure region is time-varying. The fluctuations or vibrations introduce artifacts such as brightness fluctuation and geometric warping which are eliminated or significantly reduced in accordance with the method of the present invention. Specifically, the instantaneous velocity of the linear sensor array is used to reconstruct an underlying piecewise linear model of the irradiance distribution. That reconstructed image is then resampled under ideal scanning conditions to produce the restored output.