Pfu Limited

Fujitsu Corporation

Yasunori Miyauchi

Minoru Masuda

Satoshi Ishida

Shuichi Morikawa

Masahiko Futatsuka

Makoto Takagawa

Masashi Matsumoto

Kiichi Taniho

Yoshiki Tsuchiyama

Taketo Kono

Shuuichi Morikawa

Minori Masuda

Tomohiro Sunasaki

An arrangement is provided such that a pad pressing means for pressing a separation pad against a pick roller is formed in a reverse U-shape, and a pressing spring for pressing the pad pressing means to press the separation pad against the pick roller is provided on a central portion of the pad pressing means. The pad pressing means is structured so as to have a rotating fulcrum to be rotatable back and forth with respect to a rotating direction of the pick roller about a connecting portion of the pad pressing means for connection to the pressing spring. To ensure that a large load will not be applied to the entire pad pressing means when thick paper or the like is fed, a rotating arm may be provided so that the entire pressing means including the pad pressing means is rotatable about a predetermined position set at the rotating fulcrum which is the connecting portion for connection to the pressing spring.

Automatic paper feeder

An image reading apparatus includes a lens unit () which has a low-resolution lens (), a high-resolution lens (), and a first driving unit () for driving them, and a second driving unit () for driving the lens unit (). At a first resolution, the low-resolution lens () is placed on the optical axis at a first location and the high-resolution lens () is placed off the optical axis. At a second resolution higher than the first resolution, the low-resolution lens () is placed off the optical axis and the high-resolution lens () is placed on the optical axis at a second location. At a third resolution higher than the second resolution, the low-resolution lens () is placed off the optical axis and the high-resolution lens () is placed on the optical axis at a third location.

Image reading apparatus

An image reader is composed of a read unit provided with a contact member which abuts an original bed of a flat bed unit ; and a pressing element for causing the read unit and the original bed to press against each other. Also, the image reader is composed of an apparatus body including a read unit and an original bed ; and an original cover including a light source and a diffusion plate and attached to the apparatus body in such a manner as to be freely opened and closed. The distance between a translucent original placed on the original bed and the light source is variable according to the thickness of the translucent original . Further, in the image reader, a cumulative difference between the movement of the optical unit and the movement of a light source unit is previously read; and, at the time of start of scanning for read, the relative position of the optical unit and the light source unit is shifted in reverse in relation to the direction of the cumulative difference.

Picture readers and method for controlling the same

An original reader such as an image scanner for inputting image information, provided with a optical source for illuminating an original, a lens unit ( ) capable of optically changing resolution, and a solid-state image sensor substrate placed on an image forming plane ( ) of the lens, wherein the lens unit ( ) includes a plurality of lenses that can deal with a plurality of different resolution and one lens corresponding to a specified resolution is selectively moved into a light path. The lens unit and the solid-state image sensor substrate are independently movable in the direction of optical axis for focusing.

Original reader

An automatic paper feeder of a document input device includes a pick roller 20, separator pads 68 that come into contact with the pick roller 20, a first pair of pick springs 58, and a second pick spring 60. The first pick springs 58 are disposed on the upstream side of the second pick spring 60 in the direction of conveying the paper. The first pick springs 58 are disposed on the regions on both outer sides of the width of the separator pads 68 in the axial direction of the roller, and the second pick spring 60 is disposed at a central position in the width of the separator pad 68. The first and second pick springs 58 and 60 are integrally formed as a spring unit using a single metal plate, and a force of contact of the first pick springs 58 upon the pick roller 20 on the upstream side is smaller than a force of contact of the second pick spring 60 upon the pick roller 20 on the downstream side. The separator pad 68 is formed by branching a web 70 of a rubber sheet into fork-like pad units. The spring unit and the pad units are supported together by a bracket 76 and a holder member 78.

Automatic paper feeder and frame structure of document input device

An automatic paper feeder of a document input device includes a pick roller 20, separator pads 68 that come into contact with the pick roller 20, a first pair of pick springs 58, and a second pick spring 60. The first pick springs 58 are disposed on the upstream side of the second pick spring 60 in the direction of conveying the paper. The first pick springs 58 are disposed on the regions on both outer sides of the width of the separator pads 68 in the axial direction of the roller, and the second pick spring 60 is disposed at a central position in the width of the separator pad 68. The first and second pick springs 58 and 60 are integrally formed as a spring unit using a single metal plate, and a force of contact of the first pick springs 58 upon the pick roller 20 on the upstream side is smaller than a force of contact of the second pick spring 60 upon the pick roller 20 on the downstream side. The separator pad 68 is formed by branching a web 70 of a rubber sheet into fork-like pad units. The spring unit and the pad units are supported together by a bracket 76 and a holder member 78 (FIG. 6).

An image apparatus is provided with a bottom take-out type automatic paper feeding mechanism. Documents are sequentially taken out from a lowermost document by coaction of a paper feeding roller and a document separation pad which is elastically pressed against the paper feeding roller. A hopper is provided on which the documents are placed by stacking. Projections are provided on a document placement surface of the hopper or a paper feeding passage. The projections prevent the documents from being adhered to the hopper which has been electrostatically charged.

Image reading apparatus having projections on surface of hopper near

An image reading apparatus has a reading unit including a light source lamp mounted on a unit frame arranged in a document reading portion. The image reading apparatus comprised as a lamp frame supporting the light source lamp. The lamp frame has a pin. Projections are pivotally arranged on a back side surface of the lamp frame at an interval in a longitudinal direction of the light source lamp. An upper end of the projections has a grip for grasping. One of the projections has an elongated hole for receiving the pin. The pin regulates an pivoting angle of the projection. Slit holes, in which the projections are fitted, are formed in the unit frame.

Attachment of a light source in an image reading apparatus

An image reading apparatus is provided with white reference sheets. The image reading image apparatus is movable between a first reading position at which an optical reading unit reads image information on a document supplied by an automatic paper feeding mechanism and a second reading position. The image reading apparatus regulates an absolute white level with respect to a light source.

Movable image reading apparatus

Image reader for an electronic computer

A paper feed roller (5) is divided into a first roller (5a) and a second roller (5b); a slit (58) through which about 10 to 20 sheets of documents can pass is formed between the first roller and a gate plate (57) opposite to this; and the paper fed out therefrom is fed out to a space between the second roller (5b) and a separation pad (7) in contact with this. Also, there is adopted a construction in which the pressing force of a paper conveyance spring is transformed by a slide cam sliding in a direction parallel to the paper feed roller; and the paper width detection sensor is assembled by a fitting construction.

Growing community of inventors

Kanazawa, Japan

Yasunori Miyauchi