摘要:
The invention discloses an image reading apparatus in which a linear image sensor is provided in the vicinity of an imaging optical system and the main scanning operation is achieved by electronic scanning of the linear image sensor in the longitudinal direction thereof while the sub scanning operation is achieved by the relative movement of the linear image sensor and the image formed by the imaging optical system with plural scanning speed and the image information is outputted by communication between the image process means for processing the image obtained by each main scanning operation and the external equipment, the apparatus is featured by fetching plural shading data while a scanning motor in the sub scanning direction is driven with such plural scanning speeds.
摘要:
Transmitted light from a transmitting original recording medium based on light from a first light source which emits light in at least the visible light range is introduced to a solid imaging element via an infrared cutout filter. Image information recorded on the transmitting original recording medium is read based on signals obtained from the solid imaging element. Transmitted light from a transmitting original recording medium, based on light from a second light source, which emits light only in the infrared range, is introduced to the solid imaging element without passing through the infrared cutout filter. Defect information of the recording medium itself is read based on signals obtained from the solid imaging element, so that the read defect information can be removed from the read image information. This enable the recorded image on the film to be read in a suitable manner.
摘要:
A color image reading apparatus comprises at least three line sensors arranged at regular intervals along the main scanning direction, an imaging optical system for focussing a light beam on the line sensors, and a diffraction grating for separating a light beam coming from a color image into a plurality of light beams having respective wavelengths different from each other. The imaging optical system includes at least one lens and the optical axis of the lens is eccentrically disposed relative to that of the optical system as a whole so as for the plurality of light beams to be focussed on the respective line sensors.
摘要:
An inkjet printer printing includes a cartridge mounting portion in which a ink cartridge can be inserted, and a detection portion including a detection switch having a leading end portion and detecting whether the ink cartridge is inserted in the cartridge mounting portion in accordance with a displacement amount of the leading end portion, the leading end portion being penetratingly supported via a first elastic member so as to be displaceable such that the leading end portion protrudes to the outside, and a protruding portion provided on the leading end portion side of the detection switch via a second elastic member so as to be displaceable and protrudes toward the cartridge mounting portion, the second elastic member having an elastic modulus that is smaller than an elastic modulus of the first elastic member and causing the first elastic member to be deformed when the second elastic member is deformed.
摘要:
In an automobile vehicle, fuel injection pulse outputted from an electronic control unit of an engine is transformed into a voltage value as a primary source. The voltage values is transformed by the convolution sum process and synthesized into a sound to cancel the engine noise. The synthesized sound is outputted through the speaker in the passenger compartment. On the other hand, the reduced noise sound is detected as an error signal by the microphone. The error signal is inputted to an LMS circuit where the filter coefficient is updated in accordance with both inputted error signal and the primary source. Since the fuel injection pulse before the combustion stroke is used, the noise sound can be precisely and immediately reduced even in the transient conditions of the vehicle operation.
摘要:
A cleaner unit to clean an inkjet head, ejecting ink onto a recording medium, and an ink conveyer tube, conveying the ink to the inkjet head, of an inkjet printer in cleaning liquid, is provided. The cleaner unit includes an air-liquid two-phased cleaner conveyer tube, which conveys air-liquid two-phased cleaner, and a cleaner spout, which is connected to an upstream-side end of the ink conveyer tube and to a downstream-side end of the air-liquid two-phased cleaner conveyer tube with respect to a fluid flow, and through which the air-liquid two-phased cleaner is supplied to the ink conveyer tube.
摘要:
A cleaner unit to clean an inkjet head, ejecting ink onto a recording medium, and an ink conveyer tube, conveying the ink to the inkjet head, of an inkjet printer in cleaning liquid, is provided. The cleaner unit includes an air-liquid two-phased cleaner conveyer tube, which conveys air-liquid two-phased cleaner, and a cleaner spout, which is connected to an upstream-side end of the ink conveyer tube and to a downstream-side end of the air-liquid two-phased cleaner conveyer tube with respect to a fluid flow, and through which the air-liquid two-phased cleaner is supplied to the ink conveyer tube.
摘要:
Obtained are an imaging optical system having a simple structure in which imaging position deviation due to deformation caused by a weight of an off-axial optical element is reduced and an image reading apparatus using the same. According to an imaging optical system for image reading, image information on an original surface is imaged on a sensor, and is read by the sensor. The imaging optical system includes reflection-type off-axial optical elements, each of which has an outer shape whose lengths in directions orthogonal to each other are different from each other and whose thickness is smaller than a length of the outer shape in a short-direction thereof and is made of a resin material. The plurality of off-axial optical elements are disposed such that mirror surfaces thereof are opposed to each other and constructed to satisfy a conditional expression.
摘要:
An object is to provide an imaging optical system having a very simple structure that can read image while maintaining excellent image quality without suffering from significant asymmetrical aberrations. An imaging optical system for image reading is adapted to form an image of image information on a surface of an original onto a line sensor while changing a relative position of the original surface and the line sensor to allow the line sensor to read the image information. The imaging optical system includes two off-axial reflecting surfaces, and the two off-axial surfaces are a plus deflecting surface and a minus deflecting surface, or a minus deflecting surface and a plus deflecting surface disposed in the mentioned order from the original surface side, where an off-axial reflecting surface that deflects a reference axis beam clockwise is defined as a minus deflecting surfaces and an off axial reflecting surface that deflects the reference axis beam anticlockwise is defined as a plus deflecting surface.
摘要:
In an image read apparatus which reads an image from a recording medium, such as a film, and outputs image data, and shading correction data is set. Time elapsed since the shading correction data is set is counted. Before performing main scanning, whether or not the elapsed time is longer than a predetermined period is determined, and if it is, the shading correction data is updated. The read image data is processed with shading correction using the shading correction data which is updated as time elapses.