JP2012244383A5

JP2012244383A5 -

Info

Publication number: JP2012244383A5
Application number: JP2011112205A
Authority: JP
Filing date: 2011-05-19
Publication date: 2014-05-29
Anticipated expiration: 2031-05-19

Description

本発明の目的は、搬送路を搬送される原稿の傾き補正を実行する画像読取装置及び画像形成装置を提供することにある。 An object of the present invention is to provide an image reading apparatus and an image forming apparatus that performs inclination correction of the original document conveyed on the conveying path.

［４］原稿の読取位置に光を照射しその反射光から読取画像を読み取る画像読取部と、前記原稿の読取位置に搬送される前記原稿の背景となるように配置され、前記光を前記
画像読取部に反射する正反射板と、前記読取画像から前記正反射板を示す背景画像と前記原稿を示す原稿画像との境界を読
み取り、前記境界と前記原稿の搬送方向とのなす角度に基づいて前記読取画像中の前記原
稿画像の傾きを補正する第１の傾き補正手段と、搬送される前記原稿の傾きを前記搬送方向を基準として機械的に補正する第２の傾き補
正手段と、前記第１の傾き補正手段によって前記読取画像の傾きを補正できないと判断した場合、前記第１の傾き補正手段を前記第２の傾き補正手段に切り替える切替手段と、前記第１の傾き補正手段が傾き補正した読取画像又は前記第２の傾き補正手段によって傾き補正された原稿を前記読取部によって読み取られた読取画像に基づいて用紙に画像を形成する画像形成部とを有する画像形成装置。
［５］原稿の読取位置の読取画像を読取る画像読取部と、
前記読取画像から前記読取位置の背景を示す背景画像と原稿を示す原稿画像との境界を読取り、前記境界に基づいて前記原稿画像の傾きを補正する第１の傾き補正手段へ該読取画像を送る送信部と、
搬送される原稿の傾きを機械的に補正する第２の傾き補正手段と、
第１の傾き補正と第２の傾き補正の適不適に応じて原稿の傾き補正を、第１の傾き補正と第２の傾き補正との間で切り替える切替手段と
を有する画像読取装置。
［６］前記切替手段は、自動で原稿に応じて適不適を判断する請求項５に記載の画像読取装置。
［７］前記切替手段は、操作者からの入力により適不適を判断する請求項５に記載の画像読取装置。
［８］前記切替手段は、前記境界が読取りにくい原稿か否かで適不適を判断する請求項５に記載の画像読取装置。
［９］原稿の前記光に対する透過率を検知する検知手段をさらに有し、前記切替手段は前記透過率に応じて原稿を判断する請求項６に記載の画像読取装置。
［１０］原稿の読取位置の読取画像を読取る画像読取部と、
前記読取画像から前記読取位置の背景を示す背景画像と原稿を示す原稿画像との境界を読取り、前記境界に基づいて前記原稿画像の傾きを補正する第１の傾き補正手段へ該読取画像を送る送信部と、
搬送される原稿の傾きを機械的に補正する第２の傾き補正手段と、
第１の傾き補正と第２の傾き補正の適不適を判断する切替手段と
前記切替手段の結果に応じ原稿の傾き補正を、第１の傾き補正と第２の傾き補正との間で切り替える切替手段と
前記第１の傾き補正手段が傾き補正した読取画像又は前記第２の傾き補正手段によって傾き補正された原稿を前記読取部によって読み取られた読取画像に基づいて用紙に画像を形成する画像形成部とを有する画像形成装置。 [4] An image reading unit that irradiates light to a reading position of a document and reads a read image from the reflected light, and is disposed so as to serve as a background of the document conveyed to the reading position of the document, Based on an angle formed by a specular reflection plate that reflects on the reading unit, a boundary between a background image that indicates the specular reflection plate and an original image that indicates the original, and an angle formed by the boundary and the original conveyance direction. A first inclination correction unit that corrects an inclination of the document image in the read image; a second inclination correction unit that mechanically corrects an inclination of the conveyed document based on the conveyance direction; When it is determined that the inclination of the read image cannot be corrected by one inclination correction means, the switching means for switching the first inclination correction means to the second inclination correction means, and the first inclination correction means Read Image forming apparatus and an image forming unit for forming an image on a sheet based on the read image read by the reading unit a document which is skew correction by the image or the second inclination correcting means.
[5] An image reading unit that reads a read image at a reading position of a document;
A boundary between a background image indicating the background at the reading position and a document image indicating a document is read from the scanned image, and the scanned image is sent to a first tilt correction unit that corrects the tilt of the document image based on the boundary. A transmission unit;
Second inclination correction means for mechanically correcting the inclination of the conveyed document;
Switching means for switching the document inclination correction between the first inclination correction and the second inclination correction in accordance with the suitability of the first inclination correction and the second inclination correction;
An image reading apparatus.
[6] The image reading apparatus according to [5], wherein the switching unit automatically determines suitability according to a document.
[7] The image reading apparatus according to [5], wherein the switching unit determines suitability based on an input from an operator.
[8] The image reading apparatus according to [5], wherein the switching unit determines whether the boundary is a document that is difficult to read.
[9] The image reading apparatus according to [6], further comprising a detecting unit that detects the transmittance of the document with respect to the light, and the switching unit determines the document according to the transmittance.
[10] An image reading unit for reading a read image at a reading position of a document;
A boundary between a background image indicating the background at the reading position and a document image indicating a document is read from the scanned image, and the scanned image is sent to a first tilt correction unit that corrects the tilt of the document image based on the boundary. A transmission unit;
Second inclination correction means for mechanically correcting the inclination of the conveyed document;
Switching means for determining whether or not the first inclination correction and the second inclination correction are appropriate;
Switching means for switching the document inclination correction between the first inclination correction and the second inclination correction according to the result of the switching means;
An image forming unit that forms an image on a sheet based on the read image read by the reading unit, the read image corrected by the first tilt correcting unit or the original corrected by the second tilt correcting unit; An image forming apparatus .

請求項３に係る発明によれば、利用者の操作に応じて、搬送路を搬送される原稿の紙質を判断して傾き補正を実行することができる。
請求項５または１０に係る発明によれば、原稿の傾きを複数ある傾き補正のどれで補正をするかで適切または不適合がある構成であっても、適不適に関わらず同じ傾き補正を実行する場合と比較して、適切に傾きを補正することができる。
請求項６または８または９に係る発明によれば、搬送路を搬送される原稿の違いに関わらず傾き補正を実行することができる。
請求項７に係る発明によれば、利用者の操作に応じて、傾き補正を実行することができる。
According to the third aspect of the present invention, it is possible to execute the inclination correction by determining the paper quality of the document conveyed on the conveyance path according to the operation of the user.
According to the invention according to claim 5 or 10, the same tilt correction is executed regardless of suitability or non-suitability even in a configuration in which there is a suitability or incompatibility depending on which of a plurality of tilt corrections is used to correct the tilt of the document. Compared to the case, the inclination can be corrected appropriately.
According to the invention according to claim 6, 8 or 9, it is possible to execute the inclination correction regardless of the difference of the documents conveyed on the conveyance path.
According to the invention which concerns on Claim 7, inclination correction | amendment can be performed according to a user's operation.

Claims

An image reading unit that irradiates the reading position of the document with light and reads a read image from the reflected light; and
A specular reflection plate that is arranged to be the background of the original conveyed to the reading position of the original and reflects the light to the image reading unit;
A boundary between a background image indicating the specular reflection plate and an original image indicating the original is read from the read image, and the inclination of the original image in the read image is based on an angle formed by the boundary and the transport direction of the original. First inclination correcting means for correcting
Second inclination correction means for mechanically correcting the inclination of the document being conveyed with reference to the conveyance direction;
An image reading apparatus comprising: switching means for switching the first inclination correction means to the second inclination correction means when it is determined that the inclination of the read image cannot be corrected by the first inclination correction means.

The image forming apparatus further includes a detecting unit that detects the transmittance of the document with respect to the light, and the switching unit corrects the tilt of the document image by the first tilt correcting unit based on the transmittance detected by the detecting unit. The image reading apparatus according to claim 1, wherein it is determined whether or not it is possible.

It further has an operation part,
The image reading apparatus according to claim 1, wherein the switching unit determines that the inclination of the document image cannot be corrected by the first inclination correction unit when a predetermined operation is performed on the operation unit.

An image reading unit that irradiates the reading position of the document with light and reads a read image from the reflected light; and
A specular reflection plate that is arranged to be the background of the original conveyed to the reading position of the original and reflects the light to the image reading unit;
A boundary between a background image indicating the specular reflection plate and an original image indicating the original is read from the read image, and the inclination of the original image in the read image is based on an angle formed by the boundary and the transport direction of the original. First inclination correcting means for correcting
Second inclination correction means for mechanically correcting the inclination of the document being conveyed with reference to the conveyance direction;
Switching means for switching the first inclination correction means to the second inclination correction means when it is determined that the inclination of the read image cannot be corrected by the first inclination correction means;
An image forming unit that forms an image on a sheet based on the read image read by the reading unit, the read image corrected by the first tilt correcting unit or the original corrected by the second tilt correcting unit; An image forming apparatus.

An image reading unit for reading a read image at a reading position of a document;
A boundary between a background image indicating the background at the reading position and a document image indicating a document is read from the scanned image, and the scanned image is sent to a first tilt correction unit that corrects the tilt of the document image based on the boundary. A transmission unit;
Second inclination correction means for mechanically correcting the inclination of the conveyed document;
Switching means for switching the document inclination correction between the first inclination correction and the second inclination correction in accordance with the suitability of the first inclination correction and the second inclination correction;
An image reading apparatus.

The image reading apparatus according to claim 5, wherein the switching unit automatically determines suitability according to a document.

It further has an operation part,
The image reading apparatus according to claim 5, wherein the switching unit determines suitability based on an input from an operator.

The image reading apparatus according to claim 5, wherein the switching unit determines whether or not the boundary is a document that is difficult to read.

A detecting means for detecting the transmittance of the original with respect to the light;
The image reading apparatus according to claim 6, wherein the switching unit determines a document according to the transmittance.

An image reading unit for reading a read image at a reading position of a document;
A boundary between a background image indicating the background at the reading position and a document image indicating a document is read from the scanned image, and the scanned image is sent to a first tilt correction unit that corrects the tilt of the document image based on the boundary. A transmission unit;
Second inclination correction means for mechanically correcting the inclination of the conveyed document;
Switching means for switching the document inclination correction between the first inclination correction and the second inclination correction in accordance with the suitability of the first inclination correction and the second inclination correction;
An image forming unit that forms an image on a sheet based on the read image read by the reading unit, the read image corrected by the first tilt correcting unit or the original corrected by the second tilt correcting unit; An image forming apparatus.