Brother Kogyo Kabushiki-Kaisha

Masayoshi Oosaki

Yoshinori Osakabe

Takashi Maeda

Muneaki Takahata

Katsuro Miura

Hiroshi Morisaki

Tsuyoshi Suganuma

Hiroko Ishikawa

In an image-reading device, a controller is configured to control a reading unit to read a reference plate to generate reference image data and to read a first and second faces of an original to generate first and second image data; identify a show-through line including a show-through region in which the first face depicts a first background color and the second face has a highest density value and a non-show-through region in which the first face depicts the first background color and the second face depicts a second background color; calculate an image data ratio of the show-through and non-show-through regions in the first image data; calculate a reference data ratio of the show-through and non-show-through regions in the reference image data; and determine a show-through removal light intensity such that a difference between the image data ratio and the reference data ratio falls within a prescribed range.

Image-reading device that eliminates show-through from original

In an image reading apparatus, it is judged whether an original sheet is a first sheet type, whose sheet length is longer than or equal to a first conveyance distance and shorter than a second conveyance distance, and a second sheet type, whose sheet length is longer than or equal to the second conveyance path, the first conveyance distance being a distance between a first conveyance roller and a second conveyance roller, the second conveyance distance being a distance between a supply roller and the second conveyance roller. At least one of a leading-edge arriving timing; a trailing-edge arriving timing; and a sub-scanning magnification is set dependently on the judged result. An image is read from the original sheet by using an image reading unit and a conveyance unit based on the set at least one of the leading-edge arriving timing; trailing-edge arriving timing; and sub-scanning magnification.

Image reading apparatus having conveyance rollers conveying original sheet

A scanning device has a controller which is configured to judge whether the scanning device is to be operated in a conveyed sheet scanning mode in which the controller controls a conveying unit to convey a sheet and control the scanning unit to scan images on the sheet being conveyed, or in a held sheet scanning mode in which the sheet stationarily held by a sheet table is scanned, to display functions related to the conveyed sheet scanning mode on a display unit in a first prioritized manner when the controller judges that the scanning device is to be operated in the conveyed sheet scanning mode, and to display functions related to the held sheet scanning mode on the display unit in a second prioritized manner when the controller judges that the scanning device is to be operated in the held sheet scanning mode.

Scanning device

A sheet conveying device includes: a conveying unit; and a controller. The conveying unit is configured to convey a sheet along a conveying path. The sheet has a leading edge and a trailing edge. The conveying path includes a segment that is curved. The controller is configured to control the conveying unit to convey the sheet, determine whether or not a halting condition for halting conveyance of the sheet is met, and halt, if the halting condition is met, conveyance of the sheet when one of the leading edge and the trailing edge of the sheet is positioned in a segment of the conveying path different from the segment that is curved.

Sheet conveying device capable of preventing edges of sheet from curling

In an image reading apparatus, it is judged whether an original sheet is either one of a first sheet type, whose sheet length is longer than or equal to a first conveyance distance and shorter than a second conveyance distance, and a second sheet type, whose sheet length is longer than or equal to the second conveyance path, the first conveyance distance being distance between a first conveyance roller and a second conveyance roller, the second conveyance distance being distance between a supply roller and the second conveyance roller. The original sheet is conveyed at a separation timing, when the original sheet separates away from the supply roller, at a speed that is smaller for a case where the original sheet is of the first sheet type than for a case where the original sheet is of the second sheet type. An image is read from the conveyed original sheet.

Image reading apparatus that reads original sheet while conveying the same

An image reader is provided, which includes a controller that when a PC-scan mode is set as an output mode, the controller controls an image output unit to output second read data of a second side of a document sheet at each time when a storage unit stores the second read data output from a second image reading unit on a line-by-line basis, controls the storage device to store first read data of a first side of the document sheet during a time period from a time when a leading end of the document sheet reaches a reading position of a first image reading unit to a time when a trailing end of the document sheet passes through a reading position of the second image reading unit, and controls the image output unit to sequentially output the first read data stored on the storage unit, after completely outputting the second read data.

Image reader

An image reading apparatus includes: a reading device; and a control unit, wherein the control unit configured to perform: an image reading process of controlling the reading device; a line ground-color-density detection process of detecting a ground-color-density of respective lines; a line count process of counting the number of adjacent lines, which is the number of lines that are adjacent to each other and a difference of the ground-color-densities of the lines falls within a reference range; a document ground-color-density extraction process of extracting a ground-color-density of a line in an area having the largest number of adjacent lines from a read image of the document image; and a density determination process of determining whether the ground-color-density of the document image is a reference density or lower, and a ground color correction process of performing.

Image reading apparatus and ground color correction method

An image reading apparatus includes a feeder, a first reading unit, a first memory which stores image data of the surface of the document read by the first reading unit, a second reading unit located at an upstream side of the first reading position, a second memory which stores image data of the document read by the second reading unit and a controller configured to control the feeder, the first reading unit and the second reading unit. The controller controls to execute pre-scanning the document by the second reading unit over a predetermined range shorter than a separation distance between the first reading position and the second reading position in a transporting direction from a leading edge of the document when the document reaches the second reading position. The controller further controls to execute storing obtained pre-scanned image data into the second memory and measuring the size of the document based on the pre-scanned image data stored in the second memory. The controller still further controls to execute reading the surface of the document by the first reading unit when the document reaches the first reading position, and storing obtained first image data into the first memory. The controller controls to execute processing the first image data stored in the first memory based on the size of the document obtained in the measuring.

Image reading apparatus and image reading control method for performing pre-scanning process before reading process

An image reading device comprising: a carrying unit; a reading unit; a first obtaining unit to obtain a first value representing a ground color of a first face of the document; a first judgment unit to judge whether to execute correction for the ground color of the first face; a first correction unit to correct the ground color of the first face; a second obtaining unit to obtain a second value representing a ground color of a second face of the document; a second judgment unit to judge whether the second value falls within a predetermined range including the first value; a third judgment unit to judge whether to execute correction for the second face of the document in accordance with a judgment result by the first judgment unit if the second judgment unit judges that the second value falls within the predetermined range; and a second correction unit.

Image reading device, method, and computer readable medium for the same

The face detection device detects a human face image in an image. The face detection device includes a face determining unit, a control unit, a display unit, and a receiving unit. The face determining unit performs a face determination process in which the face determining unit determines whether the image includes a human face image indicative of at least a part of a human face. The control unit performs a base process by controlling the face determining unit to perform the face determination process at least one time. The display unit displays a result of the base process. When the receiving unit receives an instruction, the control unit performs an additional process by controlling the face determining unit to perform the face determination process at least one time on the same image with a higher accuracy than the face determination process in the base process.

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Nagoya, Japan

Masayoshi Oosaki