Abstract: A document reading device (20) includes: a document conveyance section (6) and a document reading device (5). A conveyed document reading region (161b) has: a document discharge guide (51) arranged downstream of an image reading position (163a) in a document conveyance direction; and a transparent reading sheet (52) provided along a surface of the contact glass (161) and a surface of the document discharge guide (51), the document conveyance section (6) has a reading guide (62) forming a document conveyance path oppositely to the conveyed document reading region (161b), and the reading guide (62) has, on part of a surface opposing the conveyed document reading region (161b), a black reference member (620) optically read by an image reading section (163) for the purpose of correcting black reference data of an image of the document conveyed by the document conveyance section (6) and read by the document reading device (5).

Abstract: A document reading device includes: a document feed section; a contact glass plate on which an original document is fed from the document feed section; a white color reference member beside a front surface of the contact glass plate; a first reading unit beside a back surface of the contact glass plate, configured to read the original document on the front surface of the contact glass plate or the white color reference member; and a positioning member configured to position the white color reference member to be read selectively between a first reading position being the same position as the original document in contact with the front surface of the contact glass plate and a second reading position away from the front surface of the contact glass plate by a document passage clearance allowing the original document to pass between the contact glass plate and the white color reference member.

Abstract: An image reading device includes a first contact glass on which a document is conveyed from a document conveying part, a second contact glass on which the document is placed, a document separation member provided between the first contact glass and the second contact glass and separating the document from the first contact glass, a reading unit provided on rear-surface sides of the first contact glass and the second contact glass so as to be movable in a sub-scanning direction, and a guide member provided across both of the first contact glass and the document separation member on the rear-surface side of the first contact glass and guiding the movement of the reading unit.

Abstract: An image reading device includes a first contact glass on which a document is conveyed from a document conveying part, a second contact glass on which the document is placed, a document separation member provided between the first contact glass and the second contact glass and separating the document from the first contact glass, a reading unit provided on rear-surface sides of the first contact glass and the second contact glass so as to be movable in a sub-scanning direction, and a guide member provided across both of the first contact glass and the document separation member on the rear-surface side of the first contact glass and guiding the movement of the reading unit.

Abstract: An image reading apparatus includes a first housing, a second housing, a document conveyance path, a plate-like transparent member, a reader, a guide member, a transparent sheet member and a pressing member. The guide member is arranged on the transparent member at a side downstream of the first position in a conveying direction of the document and guides the document to a downstream side in the conveying direction. The transparent sheet member includes a first sheet portion which is arranged on the transparent member to cover the first position and a second sheet portion which is held in contact with the guide member and with which the document being conveyed along the document conveyance path comes into contact. The pressing member presses a side of the first sheet portion upstream of the first position in the conveying direction against the transparent member.

Abstract: An image reading apparatus includes a first housing, a second housing, a document conveyance path, a transparent member, a guide member, a transparent sheet member and a first pressing member. The second housing is openable and closable with respect to the first housing. The document conveyance path is arranged in the second housing and conveys a document passing through a first position. The guide member is arranged on the transparent member at a side downstream of the first position. The transparent sheet member is arranged on the transparent member to cover the first position. The first pressing member is arranged to cover a part of the transparent sheet member upstream of the first position from above and presses the transparent sheet member. An end portion of the first pressing member is arranged inwardly of an end portion of the transparent sheet member in the main scanning direction.

Abstract: An image reading apparatus includes a first housing, a second housing, a document conveyance path, a transparent member, a guide member, a transparent sheet member and a first pressing member. The second housing is openable and closable with respect to the first housing. The document conveyance path is arranged in the second housing and conveys a document passing through a first position. The guide member is arranged on the transparent member at a side downstream of the first position. The transparent sheet member is arranged on the transparent member to cover the first position. The first pressing member is arranged to cover a part of the transparent sheet member upstream of the first position from above and presses the transparent sheet member. An end portion of the first pressing member is arranged inwardly of an end portion of the transparent sheet member in the main scanning direction.

Abstract: An image reading device is provided. The image reading device suppresses uneven intensity of light emitted on a subject, by disposing a diffusion plate between the subject and a plurality of luminescence portions, and an image forming device that includes this image reading device. The image reading device includes an illumination portion that irradiates light onto a subject. The illumination portion includes: a plurality of LED's disposed at predetermined intervals in a main scanning direction; and an elliptical diffuser plate that is disposed between the subject and the plurality of LED's and diffuses light emitted by the plurality of LED's in a higher diffusion rate in the main scanning direction than in a sub-scanning direction.

Abstract: The present invention is aimed at providing an image reading device that suppresses generation of a so-called edge shadow while suppressing uneven intensity of light emitted onto an original. A color copy machine 1 includes an illumination portion 347a that irradiates an original G with light. The illumination portion 347a includes a plurality of LEDs 501 disposed at predetermined intervals in a main scanning direction, an elliptical diffuser plate 507 that is disposed between the plurality of LEDs 501 and the original G and causes the light emitted by the plurality of LEDs 501 to diffuse, and a second reflection mirror 541B that reflects light, which is a portion of the light diffused by the elliptical diffuser plate 507 and not directly irradiated onto the original G, so as to irradiate the light onto the original G.

Abstract: An image reading device is provided with a contact glass on which a document is to be placed; a group light source in which a plurality of point light sources are linearly arrayed; and a light source unit having the group light source mounted therein and adapted to optically scan a document surface via a contact glass with reading lights emitted from the group light source. The group light source is constructed such that at least one of the plurality of point light sources is a detecting light source for emitting a detection light toward the contact glass to detect the presence or absence of a document on the contact glass.

Abstract: The present invention is aimed at providing an image reading device that suppresses generation of a so-called edge shadow while suppressing uneven intensity of light emitted onto an original. A color copy machine 1 includes an illumination portion 347a that irradiates an original G with light. The illumination portion 347a includes a plurality of LEDs 501 disposed at predetermined intervals in a main scanning direction, an elliptical diffuser plate 507 that is disposed between the plurality of LEDs 501 and the original G and causes the light emitted by the plurality of LEDs 501 to diffuse, and a second reflection mirror 541B that reflects light, which is a portion of the light diffused by the elliptical diffuser plate 507 and not directly irradiated onto the original G, so as to irradiate the light onto the original G.

Abstract: An image reading device is provided. The image reading device suppresses uneven intensity of light emitted on a subject, by disposing a diffusion plate between the subject and a plurality of luminescence portions, and an image forming device that includes this image reading device. The image reading device includes an illumination portion that irradiates light onto a subject. The illumination portion includes: a plurality of LED's disposed at predetermined intervals in a main scanning direction; and an elliptical diffuser plate that is disposed between the subject and the plurality of LED's and diffuses light emitted by the plurality of LED's in a higher diffusion rate in the main scanning direction than in a sub-scanning direction.

Abstract: An image reading device is provided with a contact glass on which a document is to be placed; a group light source in which a plurality of point light sources are linearly arrayed; and a light source unit having the group light source mounted therein and adapted to optically scan a document surface via a contact glass with reading lights emitted from the group light source. The group light source is constructed such that at least one of the plurality of point light sources is a detecting light source for emitting a detection light toward the contact glass to detect the presence or absence of a document on the contact glass.

Abstract: A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50° or more when measured by using a lubricant coated on the magnetic disk, is free from start failure due to stiction caused by adhesion of the lubricant to the slider surface.

Abstract: A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50° or more when measured by using a lubricant coated on the magnetic disk, is free from start failure due to stiction caused by adhesion of the lubricant to the slider surface.

Abstract: A magnetic hard disk drive comprising a magnetic disk and a magnetic head slider, characterized in that said magnetic head slider is coated with a layer having a contact angle of 50° or more when measured by using a lubricant coated on the magnetic disk, is free from start failure due to stiction caused by adhesion of the lubricant to the slider surface.