摘要:
An image sensor includes: a lens configured to focus light irradiated toward an object to be read and reflected by the object to be read; a sensor configured to receive light focused by the lens; a sensor board configured to mount thereon the sensor; a board retaining plate, having a casing attachment surface extending in the X direction and a sensor board attachment reference surface that is in contact with the +Y side of the sensor board and is formed in a side surface of the casing attachment surface, and configured to retain the sensor board; and a first casing configured to fix or retain the board retaining plate by fastening of a surface of the casing attachment surface.
摘要:
A light irradiation device includes a light source, a light guide member, and a holding member. The light guide member includes an incident surface, an exit surface, and a held surface. The incident surface has an elongated shape in a main scanning direction and faces a light emitting surface of the light source. The light guide member includes a securing structure in each of both end portions in the main scanning direction, which are out of a light guide area of the light guide member. The securing structure in one end portion is an engagement lug structure protruding to penetrate into a through-hole of the holding member, including a lug on a leading end, and engaging the holding member. The securing structure on another end portion is a fastening structure having a fastening hole penetrated with a fastening member and being secured to the holding member with the fastening member.
摘要:
A development device includes an imaging lens and light shielding walls. The imaging lens includes a body part having a constant diameter and both end parts arranged at both ends in an optical axial direction having diameters larger than the body part to capture a reflected light from a document onto an imaging part. The light shielding walls has a space with an interval larger than the diameter of the body part and smaller than the diameters of the both end parts, allowing the body part of the imaging lens to be arranged in the space, and shielding a light in the optical axial direction.
摘要:
A light projecting device includes a base board, a light guiding member, a holding member, a cover, and a positioning member. A plurality of light-emitting elements are arranged in a line on the base board in a main scan direction. The light guiding member faces a radiation surface of the light-emitting elements and guides light projected from the light-emitting elements to an irradiation region of an illuminated object. The holding member holds the base board. The cover covers the base board and the light guiding member. The positioning member positions the light guiding member on the holding member. The holding member and the cover sandwich the light guiding member positioned by the positioning member. The light projecting device includes the holding member, the light guiding member, the base board, and the cover as a single unit which is detachably mountable relative to a chassis of the light projecting device.
摘要:
A scanning module capable of finely tuning the optical length comprises a lamp tube, a base, a photosensitive substrate, and an adjustment unit. The lamp tube provides a required light source for a document to be scanned. The base has a reflective mirror set and a camera lens. The reflective mirror set is used to receive light from the document, and transmits the light to the camera lens for focusing. The photosensitive substrate is used to convert light outputted by the camera lens into electronic signals. The adjustment unit is used to adjust the optical length between the base and the photosensitive substrate. The total optical length can thus be adjusted to correct the inaccuracy of magnification. Or the distance between the camera lens and the photosensitive substrate can be adjusted to align the focal length within the allowable inaccuracy of magnification to achieve an output image of better quality.
摘要:
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.
摘要:
A contact image sensor (CIS) for scanning a document is disclosed. The CIS includes a housing having an opening, a first slide and a second slide, a light guide installed on the housing through the opening and the first slide for scanning the document and generating a reflective image, a rod lens installed on the housing through the opening and the second slide for receiving the reflective image and generating a focused image, a PCB installed on the housing and having a sensing array for transforming the focused image into an image signal, and a spring cover fixed on the opening for fixing the light guide and the rod lens in the housing to form the CIS.
摘要:
Disclosed is an image scanning unit which has: a CCD substrate which is mounted on a block; three groups of adjustment fastening members to position the CCD substrate in three dimensional directions orthogonal to one another; and a springy member to press each of the adjustment fastening members against receiving part of each of the adjustment fastening members; wherein the three groups of adjustment fastening members are of a first group of fastening members to conduct the focus adjustment by independently positioning the CCD substrate in a direction perpendicular to the plane of the CCD substrate at both ends of CCD in the longitudinal direction, a second group of fastening members to conduct the sub-scanning adjustment by independently positioning the CCD substrate in a direction orthogonal to the longitudinal direction of the CCD substrate within the plane of the CCD substrate at both ends of CCD in the longitudinal direction, and a third group of fastening member tot conduct the main-scanning adjustment by independently positioning the CCD substrate in a direction along the longitudinal direction of the CCD substrate within the plane of the CCD substrate.
摘要:
An image sensor (100) comprises a lens (4), a sensor (6) and a first casing (1). The lens (4) is configured to focus light irradiated toward an object to be read (30) from a direction tilted relative to the X-Z plane, and reflected by the object to be read (30). The sensor (6) is configured to receive the light focused by the lens (4). The first casing (1) is configured to contain or retain the lens (4) and the sensor (6) and to have, in a surface (1j) extending along a main scanning direction, a tilted portion having a length in a sub-scanning direction that decreases toward the object to be read (30).
摘要:
An image reading apparatus includes an array substrate in which a plurality of point light sources is mounted along the main scanning direction, a light guide member disposed on a surface of the array substrate that mounts the plurality of point light sources, and guiding light from the plurality of point light sources to the document surface, a frame for fixing the light guide member and the array substrate, a positioning unit that determines the positional relationship of the frame with the light guide member and the array substrate in a configuration in which the incident surface of the light guide member is in proximity to or in contact with the plurality of point light sources; and an image reading unit that uses reflected light when illuminating light from the plurality of point light sources through the light guide member onto the document surface to thereby read the document image.