Abstract:
An optical scanning device includes a light source, an optical system, and a housing. The light source projects a light beam. The housing includes a holder and encloses the optical system. The optical system includes a liquid crystal element held by the housing via the holder, to modulate a phase of the light beam projected from the light source against a scanned surface. The liquid crystal element includes a plurality of substantially transparent substrates, a liquid crystal layer, and a sealing member. One of the plurality of the transparent substrates has a size larger than any other transparent substrates and is positioned in the holder. The liquid crystal layer is sandwiched between the plurality of substantially transparent substrates. The sealing member seals the liquid crystal layer between the plurality of substantially transparent substrates.
Abstract:
An optical scanner provided with at least one optical path through which an optical beam emitted from a light source is directed onto a surface of an object for forming an image thereon includes a deflector configured to deflect the optical beam and a curvature adjustment unit. The curvature adjustment unit includes a reflecting mirror configured to reflect the optical beam in a predetermined direction, a holder unit configured to hold the reflecting mirror and including at least one supporter that engages the reflecting mirror, a pressure unit configured to flexibly deform the reflecting mirror in a normal direction relative to a reflecting surface of the reflecting mirror, and a fixing member fixed to at least a portion of the reflecting mirror, configured to fix a position of the holder unit relative to the reflecting mirror in a main scanning direction by contacting at least a portion of the holder unit including the supporter.
Abstract:
The present invention provides an image scanning module including a first unit, a second unit, and a third unit. The first unit having a light source is used for retrieving a first image. The second unit is used for generating a second image by focusing the first image. The third unit is used for generating an electric signal responsive to the second image. The first unit, the second unit, and the third unit are modules discrete from each other.
Abstract:
An integrated image module for a document scanner includes a one piece die cast housing having a datum element and a support element. An imaging sensor array is enclosed in the housing. An array bias element urges the imaging sensor array against the datum element to provide accurate placement of the sensor array relative to the housing. A transport mechanism is attached to the housing so that the position of the transport mechanism accurately corresponds to the position of the imaging sensor array. The lens and the lamp for illumination are also attached to the housing so that the primary components of the imaging portion of the scanner are contained in a single module.
Abstract:
There is disclosed an image reading apparatus constructed by an illuminating unit for illuminating an object in a line shape, an image forming optical system for forming a light, as an image, from the object illuminated by the illuminating unit, a line sensor for converting the light formed as an image by the image forming optical system into an image signal, and a frame for holding the illuminating unit and the line sensor, wherein a shape in which vertices of at least a part of the cross section of the illuminating unit are connected by straight lines is set to a polygon of a pentagon or more, so that an image can be stably read at a high quality.
Abstract:
A mounting bracket for an image sensing unit of a scanner according to one example embodiment includes a first portion and a second portion extending from the first portion. The first portion has a plurality of elongated holes therein each for receiving a fastener to mount the mounting bracket to a scan head frame. The second portion includes a cutout section therein for allowing an image sensor of the image sensing unit to receive an image from an optical unit of the scanner. A pivot hole in the first portion is centered about a width of the cutout section. When the mounting bracket is mounted on the scan head frame, the elongated holes in the first portion permit linear adjustment of the mounting bracket relative to the scan head frame and the pivot hole permits angular adjustment of the mounting bracket relative to the scan head frame.
Abstract:
A carriage module with an image capture unit for using in a scanning device is disclosed. The module includes a carriage having a sliding seat and a cam; a lens attached to the carriage device; an image capture unit capturing the light images from the lens; a PC board mounting the carriage; and a supporting plate supporting the PC board. The supporting plate includes a pin and formed on the carriage. The simple trimming mechanism adjusts the distance between the lens and the image sensor easily. So, the device not only improves the quality of the formation of image and also promotes the efficiency of operating.
Abstract:
An original reading unit has first and second arrays of sensor assemblies extending in a main scanning direction for performing readings of an original document. Each of the sensor assemblies includes a sensor holder that undergoes pivotal movement about a single rotation center as a fulcrum along a wall of a unit base to bring the sensor holder to a predetermined position whereat the sensor holder can be fixed to the units base wall. A line sensor is mounted relative to the sensor holder so as not to be shifted in the main scanning direction or in a sub-scanning direction, and to undergo movement in an approaching or a separating direction so as to be brought into contact with or separated from, respectively, the unit base wall and an original support plate attached to the unit base. A focus setup unit moves the line sensor in the approaching or separating direction and positions the line sensor at a location whereat focus can be adjusted.
Abstract:
A scanning apparatus having an adjusting means is provided to allow the optical scanning module against the platen. The adjusting means is assembled with the carriage that carries the optical scanning module. The adjusting means at least comprises a roller and a rotated portion, wherein the roller tightly contacts the rotated portion. When the carriage is moving (during a scanning operation), the roller is rotating and friction (between the roller and the rotating assembly) causes the rotated portion to turn until contacting with the bottom surface of the optical scanning module, thereby allowing the optical scanning module against the platen.
Abstract:
Disclosed is an adjustable fixing device of a CCD plate comprising at least a central supporter and a mask device. The central supporter is made of non-transparency material. The mask device and the central supporter are approximately combined by a supporting device. The mask device and the central supporter are moved with respect to one another in a traveling range. An adhesive agent is filled to the place between the mask device and the central supporter for combining the mask device and the central supporter in a fixing position in the traveling range. Thereby, the central supporter is made of non-transparency material without needing to be performed with light shield process or installed with light shield element for effectively reducing cost. A preferred guiding structure is formed between the central supporter and the mask device for guiding the central supporter and the mask device so that they may move steadily. A larger adhesive area is formed between the central supporter and the mask device so that the central supporter and the mask device are more steadily combined.