Abstract:
An optical writing device that writes electrostatic latent images on an image carrier by irradiating and scanning the image carrier with an optical beam includes an optical element, a support housing configured to support members constituting the optical writing device, a pair of optical-element holding members opposing each other in a principal scanning direction and arranged in the support housing, and a displacing member configured to displace at least one of the pair of optical-element holding members relatively to the support housing on a plane perpendicular to the principal scanning direction. The optical-element holding member is made of a material having a coefficient of linear expansion smaller than that of the support housing.
Abstract:
An image scanning apparatus includes a scanning section which scans an object opposite to a linear scanning area along a main scanning direction while moving the scanning area along a subscanning direction intersecting the main scanning direction. The scanning section generates image data on the basis of the result of the scanning. A control unit of the scanning section includes a first image acquiring section that acquires first image data by making the scanning section execute scanning at a first subscanning resolution. The control unit also has a pattern searching section that searches the first image data for the image of the predetermined pattern. A second image acquiring section of the control unit acquires second image data in such a manner that when the image of the predetermined pattern is not detected by the pattern searching section.
Abstract:
Among various embodiments of the present disclosure, systems and methods for scan flow alignment are shown. A scan carriage can be aligned and used in a scan flow by selecting a scan starting location, determining a reference mark location, using the reference mark location as a coordinate system origin, moving the scan carriage from the coordinate system origin to the scan starting location, and performing a scan from the scan starting location to capture an image.
Abstract:
A contact image sensor fixing device for an office machine having a frame, a contact image sensor, and a white roller, the contact image sensor fixing device including an elastic unit mounted on the frame to push the contact image sensor against the whiter roller with a particular pressure, the contact image sensor reading data from a document as the document passes between the contact image sensor and the white roller; a holder unit to accommodate and support the contact image sensor; and at least one holder-movable unit freely moving the holder unit against the elastic force of the elastic unit applied to the contact image sensor to maintain an even pressure between the white roller and the contact image sensor when the contact image sensor receives a rotation force of the white roller.
Abstract:
An image reading and recording apparatus has: a carriage for mounting a recording head; a reading unit which reads an original document; a conveying roller arranged on a conveying path which is used in common for recording paper and the original; and a platen arranged so as to face the recording head. The reading unit is movable between a reading position on an upper side of the conveying path and a retracting position on a lower side of the conveying path. The platen can relatively and independently move for the reading unit.
Abstract:
When an optical image obtained by an optical scanning unit of optically scanning an original sheet automatically fed by an original sheet feeder is read, it is discriminated in units of pixel whether or not dirt or scratch attached to a running reading glass plate is present. Moreover, the number of the dirt and the width of the dirt are detected, and an image reading position which does not come under the influence of the dirt as much as possible is set based on the detected number of the dirt and the detected width of the dirt even when the dirt is detected at all the reading positions.
Abstract:
An image reading apparatus includes a line light source having a light guide plate and red-, green-, and blue-LEDs, for a light transmitting original, and a contact image sensor unit for detecting light from the line light source. The light transmitting original is arranged between the line light source and the contact image sensor unit. The light transmitting original is read by moving the line light source and the contact image sensor unit relative to the light transmitting original. The line light source is moved interlockingly with the contact image sensor unit by the attraction between a magnet provided at both ends of the line light source in the longitudinal direction thereof and a magnet provided at both ends of the contact image sensor unit in the longitudinal direction thereof.
Abstract:
A contact image sensor fixing device for an office machine having a frame, a contact image sensor, and a white roller, the contact image sensor fixing device including an elastic unit mounted on the frame to push the contact image sensor against the whiter roller with a particular pressure, the contact image sensor reading data from a document as the document passes between the contact image sensor and the white roller; a holder unit to accommodate and support the contact image sensor; and at least one holder-movable unit freely moving the holder unit against the elastic force of the elastic unit applied to the contact image sensor to maintain an even pressure between the white roller and the contact image sensor when the contact image sensor receives a rotation force of the white roller.
Abstract:
An apparatus and a method adapted to be used in manufacturing an image scanning apparatus for calibrating a reflective lens on a carriage are disclosed. A calibrating device has thereon a first set of three projective points from three point light beams and a first set of three calibrating points corresponding to three point light sources. The calibrating device further includes thereon a second set of three projective points and a second set of three calibrating points for matching each of the projective points on the calibrating device with a corresponding one of the calibrating points by adjusting an angle and a position of the reflective lens on the carriage so as to achieve a calibrating function.
Abstract:
An image reading apparatus includes a line light source having a light guide plate and red-, green-, and blue-LEDs, for a light transmitting original, and a contact image sensor unit for detecting light from the line light source. The light transmitting original is arranged between the line light source and the contact image sensor unit. The light transmitting original is read by moving the line light source and the contact image sensor unit relative to the light transmitting original. The line light source is moved interlockingly with the contact image sensor unit by the attraction between a magnet provided at both ends of the line light source in the longitudinal direction thereof and a magnet provided at both ends of the contact image sensor unit in the longitudinal direction thereof.