Abstract:
A compensation apparatus for image scan, applied to an optical scanner with a platform, on which an object to be scanned is disposed. The optical scanner has a photosensitive apparatus with a set of scan photosensitive devices and a storage apparatus. When the object is scanned by the set of scan photosensitive devices, a scanned image is obtained and saved in the storage apparatus temporarily. The compensation apparatus has a set of calibration boards, a set of calibration photosensitive devices and an image processor. The set of calibration boards has two calibration boards located at two sides of the platform. The set of calibration photosensitive devices is located at two sides of the set of scan photosensitive device. The image processor is used to extract and compare the calibrated image, so as to adjust the scanned image.
Abstract:
A compensation apparatus for image scan, applied to an optical scanner with a platform, on which an object to be scanned is disposed. The optical scanner has a photosensitive apparatus with a set of scan photosensitive devices and a storage apparatus. When the object is scanned by the set of scan photosensitive devices, a scanned image is obtained and saved in the storage apparatus temporarily. The compensation apparatus has a set of calibration boards, a set of calibration photosensitive devices and an image processor. The set of calibration boards has two calibration boards located at two sides of the platform. The set of calibration photosensitive devices is located at two sides of the set of scan photosensitive device. The image processor is used to extract and compare the calibrated image, so as to adjust the scanned image.
Abstract:
An apparatus for illuminating a photoconductive surface. The apparatus includes a housing defining a chamber and an open end. An imaging device is placed in the housing chamber. The imager transmits light rays through the open end of the housing to the photoconductive surface. An air pump is coupled to the housing. The air pump maintains an outwardly directed flow of air from the open end of the housing so as to move particles away from the open end. Electrically biased electrodes are located between the imaging device and the photoconductive surface. They attract the particles so as to prevent the particles from contaminating the imaging device.
Abstract:
First and second image frames are produced using respectively different sets of pixels. The different sets of pixels arise from movement of an image digitiser (13) with respect to an image (10). The image frames are recorded on a film (32) using an output display device (30). The frames are recorded with such relative positions that the film can be displayed so that the frames are viewed with such a superimposition that the position of the pixels in the first and second sets relative to viewed image are substantially the same on the respective positions of those pixels relative to the image to be reproduced. In this way, the resolution of a recorded image can be greater than that of the output device.
Abstract:
An image reading device reads a document using a plurality of reading modes including a sheet-through reading mode for reading a document at a fixed reading position while the document is automatically fed. The image reading device includes a first resolution changing means, a second resolution changing means, and a resolution setting means. The first changing means changes one of a linear velocity at which the document is fed and a traveling speed of a reading carriage to change a resolution at which the document is read in a sub-scanning direction. The second changing means electrically interpolates image data output from the first changing means to change a resolution of the image data. The resolution setting means provides a plurality of combinations of resolution change rates between the first and second changing means as resolution change modes and sets the first and second changing means to one of the combinations.
Abstract:
PROBLEM TO BE SOLVED: To increase productivity in the DF read of a copying machine, a scanner or the like while restraining an increase in cost by enabling a user to change balance between the productivity (the number of originals to be read per unit time) and image quality (quality of an image to be read), and thereby to improve the convenience of the user. SOLUTION: An image reader has: a primary resolution change means 101 for changing the conveying linear velocity of an original or transfer speed of a read carriage to change a read resolution in a vertical scanning direction; a secondary resolution conversion means 102 for changing the resolution of image data from the primary resolution change means by electric interpolation processing; and a resolution instruction means 103 for changing the combination of resolution changes in the primary resolution change means and the secondary resolution conversion means and furthermore for setting the combination as a mode in advance. COPYRIGHT: (C)2009,JPO&INPIT
Abstract:
An image reading device reads a document using a plurality of reading modes including a sheet-through reading mode for reading a document at a fixed reading position while the document is automatically fed. The image reading device includes a first resolution changing means, a second resolution changing means, and a resolution setting means. The first changing means changes one of a linear velocity at which the document is fed and a traveling speed of a reading carriage to change a resolution at which the document is read in a sub-scanning direction. The second changing means electrically interpolates image data output from the first changing means to change a resolution of the image data. The resolution setting means provides a plurality of combinations of resolution change rates between the first and second changing means as resolution change modes and sets the first and second changing means to one of the combinations.
Abstract:
An image reading device reads a document using a plurality of reading modes including a sheet-through reading mode for reading a document at a fixed reading position while the document is automatically fed. The image reading device includes a first resolution changing means, a second resolution changing means, and a resolution setting means. The first changing means changes one of a linear velocity at which the document is fed and a traveling speed of a reading carriage to change a resolution at which the document is read in a sub-scanning direction. The second changing means electrically interpolates image data output from the first changing means to change a resolution of the image data. The resolution setting means provides a plurality of combinations of resolution change rates between the first and second changing means as resolution change modes and sets the first and second changing means to one of the combinations.
Abstract:
Une première et une deuxième image sont produites en utilisant respectivement différents ensembles de pixels. Les différents ensembles de pixels sont produits par le mouvement d'un numériseur d'image (13) par rapport à une image (10). Les images sont enregistrées sur un film (32) en utilisant un dispositif de visualisation de sortie (30). Les images sont enregistrées dans des positions relatives permettant de projeter le film de sorte que les images puissent être observées avec une superposition telle que la position des pixels dans les premier et deuxième ensembles par rapport à l'image observée est sensiblement la même dans les positions respectives des pixels par rapport à l'image à reproduire. La définition d'une image enregistrée peut ainsi être supérieure à celle du dispositif de sortie.