Canon Denshi Kabushiki Kaisha

Shinobu Kato

Takashi Machida

Jun Tanaka

Masahiro Shirai

Taketo Ochiai

Tatsuya Nishi

Keiji Tsutaoka

Takashi Shigeno

Kazuaki Sakuta

Teruhiko Kitamura

Hirotaka Watanabe

Shigeru Ikezaki

Asako Chiba

Manabu Ikarashi

Kazuhide Sugiyama

Hiroyuki Ichiyoshi

Katsuhiko Okitsu

Hirokazu Higuchi

Minoru Sashida

Tetsurou Ishikawa

Masashi Shimamura

Hiroshi Oka

Yuuho Shigeta

Masaki Namiki

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A sheet conveying apparatus includes an intermediate plate () as a sheet receiving member configured to stack a sheet, a feed roller () as a feed rotator configured to feed the sheet stacked on the intermediate plate (), and a separation roller () as a separation member configured to separate the sheet from a sheet bundle stacked on the intermediate plate (). The sheet conveying apparatus further includes a restrict member () as a restrict portion disposed so as to reach a position overlapped in a width direction orthogonal to a sheet conveying direction with the feed roller () as at least one member among the feed roller () and the separation roller () and offset in the width direction from the feed roller (), and restricting a leading end position of the sheet stacked on the intermediate plate (). This arrangement enables to improve sheet conveying performance because the restrict member () can restrict the leading end position of the sheet stacked on the intermediate plate ().

Sheet conveying apparatus

An image reading apparatus including a shading correction mechanism that can be formed by fewer component parts than conventional ones, and is increased in the degree of freedom of design, thereby enabling reduction of the size and weight thereof. A contact glass guides an original to an image reading position. A glass holding member holds the glass. A line image sensor reads an image on the original conveyed to the image reading location, through the contact glass. A reference member is disposed at a location different from the image reading location on the contact glass. A moving mechanism relatively moves the line image sensor and the reference member so that the line image sensor can alternatively read the original conveyed to the image reading location and the reference member. A drive section externally drives the moving mechanism to move the line image sensor and/or the reference member.

Image reading apparatus, shading correction method therefor, and program for implementing the method

An image reading apparatus which is capable of performing accurate shading correction with simple arrangement while preventing a reference member from being scratched and preventing paper powder and the like dust from being deposited on the reference member. The image reading apparatus includes an image reading unit in which a contact glass guides an original on an image reading location. The contact glass is held by a glass holding member. A line image sensor reads the image on the original conveyed on the image reading location, through the contact glass. The image reading unit further includes a reference member whose image is readable by the image sensor, and a moving mechanism to move the image sensor so as to enable the image sensor to alternatively read the original and a reference surface of the reference member.

Image reading apparatus, image reading unit thereof, and reference member thereof for shading correction

An image reading apparatus capable of continually conveying a plurality of originals in a stable manner while cleaning a contact glass of an image sensor and reducing streaks occurring in read images. An image sensor reads an original image via a contact member which the conveyed original may contact. A cleaning member, being provided on a turning member which is able to rotate or swing and disposed at a position opposing the image sensor, cleans the contact member's surface which the original may contact. The turning member is turned by a driving unit. A controlling unit controls the driving unit to turn the turning member so that cleaning of the contact member is performed by the cleaning member after the original has passed an image reading position of the image sensor and before a subsequent original reaches the image reading position.

Image reading apparatus and control method thereof

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Yokohama, Japan

Shinobu Kato