Abstract:
Bei dem Verfahren nach der Erfindung wird zunächst anhand von Informationen, die im auszuwertenden Objekt enthalten sind die Richtung der nachfolgenden Abtastung festgelegt. Anschließend wird das zur Datenaufnahme dienende Detektorarray so gedreht, daß seine Detektorzeilen senkrecht zu dieser Abtastrichtung stehen. Diese Wahl der Abtastrichtung kann automatisch oder interaktiv erfolgen. Zur eigentlichen Datenaufnahme wird das Objekt in der festgelegten Abtastrichtung streifenförmig über das feststehende Detektorarray bewegt. Die dabei vom Detektorarray erzeugten Signale werden in einem nachgeschalteten Rechner ausgewertet.
Abstract:
PURPOSE: An image reading apparatus for controlling the degradation of the reading accuracy about a color is provided to reduce the image processing time with the avoidance of the unnecessary correction. CONSTITUTION: A reading unit generates image pixel information about an examined object by the reading of the reflected light. Compensation amount setting units(368A, 368B) receive image information from the readout unit. According to the image information, the compensation amount setting unit sets up the offset about the image information. Compensation units compensates the image information about the irradiated substance with the fixed the offset.
Abstract:
Example implementations relate to a scan carriage of a print apparatus. In some examples, a system may include a print carriage to transit across a print zone of the print apparatus and a scan carriage selectably attachable to the print carriage to transit across the print zone of the print apparatus.
Abstract:
Example implementations relate to streak compensation. Some examples may calibrate an initial gain for data from an optical element based on a scan of a first calibration target, obtain an image of a second calibration target from the optical element using the calibrated initial gain, and detect at least one streak in the image of the second calibration target. Some examples may also record data representing the at least one detected streak and may calibrate a final gain for the optical element based on the initial gain and the data representing the at least one detected streak.
Abstract:
A document reading apparatus includes a document positioning plate configured to position a document, a carriage configured to move a light source along the document positioning plate, a reading unit configured to read an image of a document illuminated by a light source of the carriage, a white reference member provided in the displacement range of the carriage, an input unit configured to input a reading start instruction for a document, and a control unit configured to move the carriage along the document positioning plate in response to a reading start instruction input via the input unit. The control unit moves the carriage to a first position at which the white reference member is provided, cause the reading unit to read the white reference member, moves the carriage to a second position that is an acceleration start position for accelerating toward the reading start position of the document positioning plate, and waits for a reading start instruction input from the input unit.
Abstract:
A method and apparatus of varying an image density of a scanning system (10) uses a calibration patch (42) and a variable image density setting device. A calibration patch (42) having a known density is scanned to determine a neutral threshold for each reading element (24) of the scanner. Subsequently, a user varies an image density setting device to increase or decrease the image density. In such calibration, a desired threshold of each reading element (24) is determined based on a desired image density setting and a neutral image density setting of each reading element (24). When the document (30) is subsequently scanned, the scanned response is compared to the desired threshold for each reading element (24) to determine if a dot should be printed.
Abstract:
An image reading apparatus which supports a both-side scan mode and a controlling method thereof. The image reading apparatus includes: an automatic paper transfer unit which automatically transfers a papers; a first scanning unit which comprises a first light source and scans a first side of the paper; a second scanning unit which comprises a second light source and scans a second side of the paper; and a controller which controls the first and second light sources to be alternately lit on a plurality of times within a cycle of a preset signal when the paper is transferred to the automatic paper transfer unit.
Abstract:
An image scanning apparatus includes an image scanning unit (25) that reads an image from an original sheet (1) by scanning an image-formed surface of the original sheet (1) with light in a main-scanning direction and converting light reflected from the image-formed surface into electricity using a photoelectric conversion element (201); a shading correction unit (205) that performs shading correction on an image signal created by reading the image from the original sheet (1); a white member (26) that faces a scanning surface of the image scanning unit (25); and a reference-white-data creating unit (25) that creates reference white data for the shading correction by scanning a surface of the white member (26) using the image scanning unit (25); and an interval controlling unit (100) that decreases an interval between a scanning surface of the image scanning unit (25) and a surface of the white member (26) when the reference-white-data creating unit (25) creates the referential white data.
Abstract:
An image reader is provided, which includes a feeder feeding a document sheet, a first reading sensor, a first reference member, a moving mechanism moving the first reading sensor to a document reading position to read an image of the document sheet and a reference reading position to read an image of the first reference member, and a controller that controls the moving mechanism to move the first reading sensor to the reference reading position, controls the first reading sensor to read the image of the first reference member, and controls the moving mechanism to move the first reading sensor to the document reading position after the first reading sensor reads the image of the first reference member. The controller controls the feeder to start feeding the document sheet to the document reading position before the first reading sensor reaches the document reading position from the reference reading position.
Abstract:
An image processor includes a reading unit (10, 13, 17) that moves a scanning optical system (10, 13) toward a reference white sheet (101) to read the reference white sheet (101) from a direction along which the scanning optical system (10, 13) returns to the carried document reading glass (6) before reading one sheet of a document mounted on a carried document reading glass (6) by an automatic document feeding unit (3) in a sheet document reading mode of forming an image of the document carried by the automatic document feeding unit (3) by an image sensor (15) through the scanning optical system (10, 13) facing the carried document reading glass (6).