JP2011024098A5

JP2011024098A5 -

Info

Publication number: JP2011024098A5
Application number: JP2009168873A
Authority: JP
Filing date: 2009-07-17
Publication date: 2012-08-30

Description

上記目的を達成するために、本発明の原稿読取装置は、原稿を積載する積載手段と、前記積載手段に積載された原稿を１枚ずつ読取位置を通過させるように搬送する搬送手段と、前記搬送手段によって搬送される原稿の画像を前記読取位置で読み取る読取手段と、前記搬送手段によって前記読取位置を通過して搬送された原稿を前記読取位置より上流の位置に戻すための戻し搬送経路とを備える原稿読取装置において、前記積載手段に配置され、前記積載手段に積載された原稿の搬送方向の長さである原稿長さを検知する第１の原稿長さ検知手段と、前記原稿の前記搬送方向に直交する幅方向の長さである原稿幅を検知する幅検知手段と、前記積載手段にサイズの異なる複数の原稿が混在する原稿束が積載される原稿混載モードが設定された場合、前記幅検知手段によって検知された原稿幅と前記第１の原稿長さ検知手段によって検知された原稿長さとに基づき予測される複数の定型サイズの中の最大の定型サイズを仮の原稿サイズに決定する仮サイズ決定手段と、前記搬送手段によって搬送中の原稿の搬送方向の長さを測定することにより原稿長さを検知する第２の原稿長さ検知手段と、前記幅検知手段によって検知された原稿幅および前記第２の原稿長さ検知手段によって検知された原稿長さに基づき、実際の原稿サイズを決定する実サイズ決定手段と、前記仮サイズ決定手段によって決定された仮の原稿サイズと、前記実サイズ決定手段によって決定された実際の原稿サイズとが等しい場合、前記仮の原稿サイズに従って行われる前記読取手段による前記原稿の画像の読み取りを継続させ、一方、前記仮の原稿サイズと前記実際の原稿サイズとが異なる場合、前記搬送手段により前記戻し搬送経路を経由して前記原稿を前記上流の位置に戻させ、前記実際の原稿サイズに従って、前記読取手段により前記原稿の画像の読み取りのやり直しを行わせる制御手段とを備えたことを特徴とする。 In order to achieve the above object, the document reading apparatus according to the present invention comprises: a loading unit for loading documents; a transport unit for transporting the documents loaded on the loading unit one by one so as to pass the reading position; Reading means for reading an image of a document conveyed by the conveyance means at the reading position; and a return conveyance path for returning the document conveyed while passing the reading position by the conveyance means to a position upstream from the reading position; in the document reading apparatus Ru provided with, disposed in the stacking unit, a first document length detection means for detecting the document length is a length in the conveying direction of the originals stacked on the stacking means, the original a width detecting means for detecting the document width the a length in the width direction perpendicular to the conveying direction, mixed document mode document stack in which a plurality of originals are mixed having different sizes Ru are stacked is set to said stacking means If the document size detected by the width detection unit and the document length detected by the first document length detection unit are the largest fixed size among the plurality of fixed sizes, the temporary document size is determined. A second original length detection means for detecting the length of the original by measuring the length of the original being conveyed by the conveyance means, and the width detection means The actual size determination means for determining the actual size of the original based on the read original width and the original length detected by the second original length detection means, and the temporary original size determined by the temporary size determination means when, reading of the actual case is equal to the original size determined by the actual size determining means, of the original by said reading means is performed according to the original size of the temporary image While, if the temporary document size and the actual document size are different, the transport means causes the document to return to the upstream position via the return transport path, and the actual document size According to the present invention, the image forming apparatus further comprises control means for causing the reading means to reread the image of the document.

Claims

A loading unit for loading originals, a transport unit for transporting the originals loaded on the loading unit one by one so that the reading position passes, and a reading for reading the image of the original transported by the transport unit at the reading position means, in the document reading apparatus Ru and a conveyance path return for returning upstream position from the reading position the conveyed document passes through the reading position by the conveying means,
A first document length detection unit disposed in the stacking unit and detecting a document length which is a length in a conveyance direction of the document stacked on the stacking unit;
Width detection means for detecting an original width which is a length in a width direction orthogonal to the transport direction of the original;
If mixed document mode document stack in which a plurality of originals having different sizes on the stacking means are mixed is Ru are stacked is set, detected original width detected by the width detection means by said first document length detecting means Temporary size determination means for determining, as a temporary document size, the largest fixed size among a plurality of fixed sizes predicted based on the selected document length;
A second original length detecting means for detecting the length of the original by measuring the length in the conveying direction of the original being conveyed by the conveying means;
An actual size determination unit that determines an actual document size based on the document width detected by the width detection unit and the document length detected by the second document length detection unit;
When the temporary document size determined by the temporary size determination unit is equal to the actual document size determined by the actual size determination unit, the image of the document by the reading unit is processed according to the temporary document size The reading is continued, and when the temporary document size and the actual document size are different, the conveyance means causes the document to return to the upstream position via the return conveyance path, and the actual document A document reading apparatus comprising: a control unit which causes the reading unit to read the image of the document again according to the size.

The width detection means includes a first detection unit for detecting the position of a restriction member for restricting both ends in the width direction of the bundle of documents stacked on the stacking device, and the document conveyed from the stacking device by the conveyance device. A second detection unit that detects the position of one end in the width direction, and the document width based on the position detected by the first detection unit and the position detected by the second detection unit 2. The document reading apparatus according to claim 1, wherein

If the temporary document size determined by the temporary size determination unit is different from the actual document size determined by the actual size determination unit, the control unit reads the image according to the actual document size. 2. The document reading apparatus according to claim 1, wherein the presence or absence of the next document is not determined until the reworking is completed.

2. The document reading apparatus according to claim 1, further comprising: preparing means for preparing an image processing of the document read by the reading unit based on the temporary document size determined by the temporary size determining unit.

A loading unit for loading originals, a transport unit for transporting the originals loaded on the loading unit so as to pass the reading position of the reading device one by one, and the loading unit are transported by the transport unit. in the automatic document feeding apparatus Ru and a conveyance path return for returning the original to the position upstream of the reading position,
A first document length detection unit disposed in the stacking unit and detecting a document length which is a length in a conveyance direction of the document stacked on the stacking unit;
Width detection means for detecting an original width which is a length in a width direction orthogonal to the transport direction of the original;
If mixed document mode in which a plurality of originals having different sizes on the loading means Ru are stacked in a mixed is set, it is detected by the by the document width detected by the width detecting means first original length detecting means Temporary size determination means for determining, as a temporary document size, the largest fixed size among the plurality of fixed sizes predicted based on the document length;
A second original length detecting means for detecting the length of the original by measuring the length in the conveying direction of the original being conveyed by the conveying means;
An actual size determination unit that determines an actual document size based on the document width detected by the width detection unit and the document length detected by the second document length detection unit;
When the temporary document size determined by the temporary size determination unit is equal to the actual document size determined by the actual size determination unit, the image of the document by the reading device is performed according to the temporary document size The reading is continued, and when the temporary document size and the actual document size are different, the conveyance means causes the document to return to the upstream position via the return conveyance path, and the actual document An automatic document feeder characterized by comprising: control means for causing the reading device to reread the image of the document according to the size.

A loading unit for loading originals, a transport unit for transporting the originals loaded on the loading unit one by one so as to pass the reading position, and a reading for reading the image of the original transported by the transport unit at the reading position means and the control method of the document reading apparatus Ru and a return transport path for returning to the upstream position from the reading position the conveyed document passes through the reading position by the conveying means,
A first original document length detecting step of detecting an original document length which is a length in the conveyance direction of the original document stacked on the stacking means by a first original document length detecting means disposed on the stacking means;
A width detection step of detecting a document width which is a length in a width direction orthogonal to the transport direction of the document;
If mixed document mode in which a plurality of originals having different sizes on the loading means Ru are stacked in a mixed is set, it is detected by the first document length detecting step detected original width in the width detecting step A provisional size determination step of determining the largest standard size of the plurality of standard sizes predicted based on the original document length as the temporary original size;
A second original document length detecting step of detecting an original document length by measuring a length in the conveyance direction of the original document being conveyed by the conveying means;
An actual size determination step of determining an actual original size based on the original width detected in the width detection step and the original length detected in the second original length detection step;
When the temporary document size determined in the temporary size determination step is equal to the actual document size determined in the real size determination step, the image of the document by the reading unit is performed according to the temporary document size The reading is continued, and when the temporary document size and the actual document size are different, the conveyance means causes the document to return to the upstream position via the return conveyance path, and the actual document And controlling the reading unit to read the image of the document again according to the size of the document.