Konica Minolta Business Technologies, Inc.

Konica Corporation

Masashi Aoki

Tsuyoshi Mizubata

Kiyoshi Hata

Satoru Shimizu

Osamu Kato

Nobutaka Kato

Hideyuki Umeno

Kazuaki Ito

An image reading device to read an image carried on a document, including: an image reading section to read an image carried on a document; a polygonal member, mounted to face the image reading section, and spaced from the image reading section at a predetermined distance, the polygonal member includes a document feeding flat surface which faces the image reading section when the document is fed thereon, a white flat surface, and a black flat surface; a light source to emit light rays onto the image carried on the document, and onto the polygonal member when the document is not fed; and a control section to control an amount of the light rays emitted from the light source; wherein the control section corrects an amount of light rays concerning the white color and the black color, based on the amount of the light rays read by the image reading section.

Image reading device

There is described a document feeding apparatus and an image reading apparatus, which are employed for a copier, a facsimile, a scanner, etc. The document feeding apparatus or the image reading apparatus includes: a document feeding tray on which documents are stacked; a paper forwarding device to forward the documents; a document detector to detect the documents; and a controller to control the paper forwarding device. When forwarding a document having a length equal to or greater than a predetermined length in a conveying direction, the controller activates the paper forwarding device so as to forward a next document based on a detected result acquired by the document detector. While, when forwarding a document having a length smaller than the predetermined length, the controller activates the paper forwarding device so as to forward a next document without being based on a detected result acquired by the document detector.

Document feeding apparatus and image reading apparatus

A document feeder reads a document at a reading section while conveying the document. The document feeder has a flexible member which is set in a convey path formed in a document feeding section such that the document is always conveyed along the convey path, and which flexes by a passing force of the document, to allow conveyance of the document. The flexible member is formed of a PET sheet, and is adhered to a reading guide member provided to the document feeding section, to close the convey path.

Document feeder and image forming apparatus

In an image forming apparatus having a document feeder for taking up a document from a document bundle placed on a document tray, a controller has a normal mode to perform a normal-size conveyance control by taking up each document from a bundle of documents having the same size, a multi-size mode to perform a multi-size conveyance control by taking up each document from a bundle of documents having various sizes. When the normal mode is carried out, the controller controls to stop the document after the first preset time passes after the trailing edge of the document has been detected, and when multi-size mode is carried out, the controller controls in place of using the first preset time by the second preset time which is set to be a longer time than the first preset time.

Image formation apparatus equipped with automatic document feeder

A document sheet conveyance device includes a sheet feeding tray on which document sheets are stacked, a stopping member against which leading edges of the stacked document sheets hit, a sheet feeding member for feeding the document sheets in the order from a top thereof, a separation member for separating a sheet from the fed document sheets and feeding, a stopper provided between the sheet feeding member and the separation member, for preventing the document sheet from moving toward the separation member, a switching member provided downstream of the separation member, for switching a conveyance path of the document sheet, a working member for enabling the stopper to move from a sheet stop position to a sheet releasing position, an interlocking member for moving the working member when the switching member is operated, and a drive member for driving the working member.

Original document conveyance device

An image forming apparatus includes an image reading unit, document convey unit, display/operating portion, and hinge. The image reading unit has a slit glass plate for conveying and scanning a document, and a platen glass plate for fixing and scanning the document. The document convey unit is set above glass surfaces of the slit glass plate and platen glass plate. The display/operating portion is provided to one side of the glass surfaces. The hinge is provided to the other side of the glass plates and serves to attach the document convey unit to be openable and closeable with respect to the glass surfaces. The hinge has an angle stopper with which the document convey unit can be opened at one desired open angle selected from at least two different open angles with respect to the glass surfaces.

Growing community of inventors

Hachioji, Japan

Masashi Aoki