JP2010041396A - Image reading apparatus and image reading recording apparatus - Google Patents

Image reading apparatus and image reading recording apparatus Download PDF

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JP2010041396A
JP2010041396A JP2008201964A JP2008201964A JP2010041396A JP 2010041396 A JP2010041396 A JP 2010041396A JP 2008201964 A JP2008201964 A JP 2008201964A JP 2008201964 A JP2008201964 A JP 2008201964A JP 2010041396 A JP2010041396 A JP 2010041396A
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image reading
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JP5084662B2 (en
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Atsushi Miyahara
淳 宮原
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Canon Inc
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Canon Inc
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Abstract

<P>PROBLEM TO BE SOLVED: To enable the most suitable reading for each to be performed by flexibly corresponding to a case, where which a reading surface of a medium includes a diffraction reflecting surface or a case where it does not include the diffraction reflecting surface. <P>SOLUTION: Optical spread of an illuminating light is varied, in response to a determination of whether or not the reading surface of the medium includes the diffraction reflecting surface. The optical spread for the case of reading the diffraction reflecting surface is made larger than in other cases. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

本発明は、媒体の画像情報を読み取る画像読取の装置、およびこれを備えた画像読取記録装置に関する。   The present invention relates to an image reading apparatus that reads image information on a medium, and an image reading and recording apparatus including the same.

イメージスキャナ、複写機、ファクシミリ、マルチファンクションプリンタなどに用いられ、紙原稿などの被読取媒体を照明して、照明された読取面をラインセンサを用いて光学的に読み取る画像読取装置が知られている。   Image reading apparatuses that are used in image scanners, copiers, facsimiles, multifunction printers, etc., illuminate a read medium such as a paper document, and optically read the illuminated reading surface using a line sensor are known. Yes.

照明にはライン状の照明が行なえる光源、例えば冷陰極蛍光管やキセノン管が従来より用いられている。また最近、それらに置き換わるものとして、白色ＬＥＤの点光源を複数アレイ状に並べた照明光源が増えている。   For the illumination, a light source capable of performing linear illumination, such as a cold cathode fluorescent tube or a xenon tube, has been conventionally used. Recently, as a replacement for them, an illumination light source in which a plurality of white LED point light sources are arranged in an array is increasing.

複数の点光源を用いたものは、そのままでは照度ムラが生じる。そこで、各点光源からの光を光拡散部によって拡散させ、照度ムラを軽減する技術が知られている。（特許文献１、特許文献２参照）
特開２００５−１５６６００号公報 特開２００７−１５８３７９号公報 If a plurality of point light sources are used, illuminance unevenness occurs as they are. Therefore, a technique is known in which light from each point light source is diffused by a light diffusing unit to reduce illuminance unevenness. (See Patent Document 1 and Patent Document 2)
JP-A-2005-156600 JP 2007-158379 A

ところが、紙原稿ではなく、ＣＤなどディスク媒体のレーベル面（コンテンツのタイトルや内容を印刷した面）のような回折反射面を含む面であると、回折反射面で回折光を生じ、干渉によって読み取った画像にムラ（色ムラや輝度ムラ）が発生する場合がある。   However, if it is a surface including a diffractive reflection surface such as a label surface of a disc medium such as a CD (surface on which content titles or contents are printed) instead of a paper document, diffracted light is generated on the diffractive reflection surface and is read by interference. In some cases, unevenness (color unevenness or brightness unevenness) may occur in the image.

図６（ａ）はその発生原理を説明する図である。ディスク媒体のレーベル面は、データ記録面と同じく微細な凹凸構造になっているものが多い。例えば、ＣＤであればデータ記録面はおよそ０．２μｍピッチの周期的な凹凸（ピット構造）が連続したアルミ反射面であり、反対側のレーベル面も同様の反射面を有するものが多い。０．２μｍは読取光の波長のおよそ４分の１である。このような光の波長オーダーの凹凸は、回折格子として作用し、凹部で反射回折光を生じる。その回折角度は波長（色）によって異なる、いわゆる色分解と呼ばれる現象を起こす。   FIG. 6A is a diagram for explaining the generation principle. In many cases, the label surface of the disk medium has a fine uneven structure like the data recording surface. For example, in the case of a CD, the data recording surface is an aluminum reflecting surface in which periodic irregularities (pit structure) with a pitch of about 0.2 μm are continuous, and the opposite label surface often has a similar reflecting surface. 0.2 μm is about a quarter of the wavelength of the reading light. Such irregularities in the wavelength order of light act as diffraction gratings, and generate reflected diffracted light in the concave portions. The diffraction angle varies depending on the wavelength (color), and causes a phenomenon called so-called color separation.

凹部での反射回折光と凸部での反射光は光学的に干渉する。回折光の回折角度は色によって異なるため、観察者には場所により色が異なる色ムラが観察される。また、光源の態様によっては回折反射のパターンすなわち部分的な輝度ムラとなって観察される。   The reflected diffracted light at the concave portion and the reflected light at the convex portion interfere optically. Since the diffraction angle of the diffracted light varies depending on the color, the observer observes color unevenness that varies in color depending on the location. Further, depending on the form of the light source, a diffraction reflection pattern, that is, a partial luminance unevenness is observed.

図７は、均一照度でＣＤのレーベル面を照明したときに、場所によってムラが生じて観察された状態を示す。   FIG. 7 shows a state where the CD label surface is illuminated with uniform illuminance and observed with unevenness depending on the location.

上記特許文献に記載の装置は、照明光を生成する光源を複数の点光源にしたことで生じる照度の不均一を軽減することを主眼としたものである。しかし、読取面から生じる回折光の干渉によるムラの問題には、なんら言及していない。   The apparatus described in the above-mentioned patent document mainly aims to reduce non-uniform illuminance caused by using a plurality of point light sources as light sources for generating illumination light. However, no mention is made of the problem of unevenness caused by interference of diffracted light generated from the reading surface.

本発明は、上記課題に着目してこれを解決すべくなされたものである。   The present invention has been made to solve this problem by paying attention to the above problems.

本発明の目的は、媒体の読取面が回折反射面を含んでいる場合に、この回折反射面での回折光による干渉で発生する読取画像のムラを緩和することである。さらに、媒体の読取面が回折反射面を含んでいる場合、回折反射面を含んでいない場合にフレキシブルに対応して、それぞれで最適な読み取りを行なうことができる装置および方法の提供である。   An object of the present invention is to alleviate unevenness of a read image caused by interference by diffracted light on a diffraction reflection surface when the reading surface of the medium includes a diffraction reflection surface. Furthermore, the present invention provides an apparatus and a method that can flexibly cope with the case where the reading surface of the medium includes a diffractive reflection surface and does not include the diffractive reflection surface, respectively, and can perform optimum reading.

上記課題を解決する本発明は、載置面の上に置かれた媒体の読取面を該載置面の側から照明する照明ユニットと、前記読取面を光学的に読み取る読取ユニットを備え、読み取った画像の画像信号を出力する画像読取装置であって、前記照明ユニットの照明光の光拡散性を変化させる機構を有し、読み取る媒体に応じて光拡散性を変化させることを特徴とするものである。   The present invention for solving the above-mentioned problems includes an illumination unit that illuminates a reading surface of a medium placed on a mounting surface from the side of the mounting surface, and a reading unit that optically reads the reading surface. An image reading apparatus for outputting an image signal of an image having a mechanism for changing the light diffusibility of the illumination light of the illumination unit, and changing the light diffusibility according to a medium to be read It is.

本発明によれば、媒体の読取面が回折反射面を含んでいる場合に、この回折反射面での回折光による干渉で発生するムラを確実に軽減して、適切な読取画像を得ることができる。そして、媒体の読取面が回折反射面を含んでいる場合、回折反射面を含んでいない場合にフレキシブルに対応して、それぞれで最適な読み取りを行なうことができる。   According to the present invention, when the reading surface of the medium includes a diffractive reflection surface, it is possible to reliably reduce unevenness caused by interference due to diffracted light on the diffractive reflection surface and obtain an appropriate read image. it can. When the reading surface of the medium includes a diffractive reflection surface, it is possible to perform optimum reading in a flexible manner corresponding to the case where the reading surface does not include the diffractive reflection surface.

本発明は、被読取媒体（本発明においては「媒体」という。）の回折反射面を含む読取面を光学的に読み取る際の、色ムラや輝度ムラを軽減する手法を提供するものである。本発明の実施の形態の説明に先立ち、基本的な概念について説明する。   The present invention provides a technique for reducing color unevenness and luminance unevenness when a reading surface including a diffraction reflection surface of a medium to be read (referred to as “medium” in the present invention) is optically read. Prior to the description of the embodiment of the present invention, the basic concept will be described.

先に説明したとおり、図６（ａ）のような平行光線で回折反射面を照明した場合は、波長（色）によって反射回折角が異なる色分解によって色ムラが目立つ。   As described above, when the diffraction reflection surface is illuminated with parallel rays as shown in FIG. 6A, color unevenness is conspicuous due to color separation with different reflection diffraction angles depending on the wavelength (color).

これを軽減するために、図６（ｂ）のように、光拡散体（光透過拡散性の部材）を介して回折反射面を照明する。光拡散体からは様々な方向成分の光が生じるため、回折反射面を形成する凹凸には、様々な方向から光が当たることになる。すると、入射するある方向成分の光線により回折光が発生して強弱が生じたとしても、その他いろいろな方向成分の光線による同様の強弱がすべて重畳されるので、平均するとほぼ均一となり、結果として色ムラや輝度ムラは大きく緩和される。すなわち、光拡散体で拡散された光線で照明することで、全体として色分解されることが無くなり、読取画像のムラを大きく緩和することができる。   In order to reduce this, as shown in FIG. 6B, the diffractive reflection surface is illuminated through a light diffuser (light transmission diffusive member). Since light of various directional components is generated from the light diffuser, light hits the unevenness forming the diffraction reflection surface from various directions. Then, even if the diffracted light is generated by the incident light of a certain direction component and the intensity is increased and decreased, all the same intensity by the light beams of various other direction components are superimposed, so on average, it becomes almost uniform, resulting in color Unevenness and brightness unevenness are greatly reduced. That is, by illuminating with the light diffused by the light diffuser, color separation as a whole is eliminated, and unevenness of the read image can be greatly reduced.

ムラ緩和の効果を大きくするには、光拡散体での拡散度合いも大きくしたほうがよいが、それに伴って例えば３０〜４０％程度の照明光量のロスが生じる。そこで、読取面が回折反射面を含むときだけ光拡散体を介して照明し、それ以外の通常の原稿を読み取る場合は、光拡散体を介さずにより明るい照明を行なうようにする。すなわち、媒体の読取面が回折反射面を含んでいる場合、回折反射面を含んでいない場合、それぞれにフレキシブルに対応して、適切な読み取りを行なうものである。   In order to increase the effect of mitigating unevenness, it is better to increase the degree of diffusion in the light diffusing body. Therefore, illumination is performed through the light diffuser only when the reading surface includes the diffraction reflection surface, and when reading other normal documents, brighter illumination is performed without using the light diffuser. That is, when the reading surface of the medium includes a diffraction reflection surface and when it does not include a diffraction reflection surface, appropriate reading is performed in a flexible manner.

＜実施の形態＞
以下、インクジェット方式のプリント部を備えた画像読取記録装置、いわゆるマルチファンクションプリンタに本発明を適用した実施形態を説明する。 <Embodiment>
Hereinafter, an embodiment in which the present invention is applied to an image reading and recording apparatus having an ink jet printing unit, that is, a so-called multifunction printer will be described.

図１はプリンタ本体内のスキャナ部の断面図である。スキャナ部は大きくは、照明ユニット２２、読取ユニット２５、信号処理部２９、およびガラス板の載置面２０からなる。   FIG. 1 is a cross-sectional view of a scanner unit in the printer body. The scanner unit mainly includes an illumination unit 22, a reading unit 25, a signal processing unit 29, and a glass plate placement surface 20.

照明ユニット２２はライン状の照明光を発生するもので、発光源と導光体からなるユニットである。発光源としては、白色ＬＥＤアレイ、白色ＯＬＥＤアレイ、冷陰極蛍光管、キセノン管等が用いられる。照明ユニット２２の光により、ガラス板の載置面２０の上に置かれた原稿２１の下面の読取面を、図の紙面垂直方向にライン状に照明する。原稿２１は後述するように、ディスク媒体あるいは通常の紙原稿等である。   The illumination unit 22 generates linear illumination light, and is a unit composed of a light source and a light guide. As the light source, a white LED array, a white OLED array, a cold cathode fluorescent tube, a xenon tube, or the like is used. Light from the illumination unit 22 illuminates the reading surface on the lower surface of the document 21 placed on the placement surface 20 of the glass plate in a line shape in the direction perpendicular to the drawing sheet. As will be described later, the document 21 is a disk medium or a normal paper document.

照明ユニット２２の光源と載置面２０の間の光路には、照明光の光拡散性を変化させる機構が設けられている。これは、光透過性の光拡散板２３と、それを走査方向に移動させるモータ駆動機構２４からなる。詳細については後述する。   In the optical path between the light source of the illumination unit 22 and the mounting surface 20, a mechanism for changing the light diffusibility of the illumination light is provided. This comprises a light transmissive light diffusing plate 23 and a motor drive mechanism 24 that moves the light diffusing plate 23 in the scanning direction. Details will be described later.

読取ユニット２５は、照明された読取面を光学的に読み取るものである。原稿２１の読取面で反射した光は、反射ミラー２６を介して結像レンズ２７により、ラインセンサ２８上に入射する。ラインセンサ２８は、図の紙面垂直方向に多数の受光素子が配列された一次元の光電変換素子アレイである。原稿２１の読取面のライン状の照明領域は、ラインセンサ２８の受光素子上に結像する。   The reading unit 25 optically reads the illuminated reading surface. The light reflected by the reading surface of the document 21 is incident on the line sensor 28 by the imaging lens 27 via the reflection mirror 26. The line sensor 28 is a one-dimensional photoelectric conversion element array in which a large number of light receiving elements are arranged in a direction perpendicular to the drawing sheet. The line-shaped illumination area on the reading surface of the document 21 forms an image on the light receiving element of the line sensor 28.

信号処理部２９は、アナログフロントエンドと画像処理部を有し、ラインセンサ２８の出力から画像信号を生成して外部に出力する。   The signal processing unit 29 has an analog front end and an image processing unit, generates an image signal from the output of the line sensor 28, and outputs the image signal to the outside.

照明ユニット２２と読取ユニット２５は一体となって、載置面２０に対して相対的に矢印の走査方向に移動して、移動しながら読み取りを行なうことで、二次元の画像信号を取得する。本例のプリンタは、載置面２０は固定して、照明ユニット２２と読取ユニット２５が移動するが、逆に載置面２０が移動するようにしてもよい。   The illumination unit 22 and the reading unit 25 are integrally moved relative to the mounting surface 20 in the scanning direction of the arrow, and reading is performed while moving to obtain a two-dimensional image signal. In the printer of this example, the mounting surface 20 is fixed and the illumination unit 22 and the reading unit 25 move, but conversely, the mounting surface 20 may move.

図２は光拡散板２３を中心とする、照明光の光拡散性を変化させる機構の詳細を説明するための斜視図である。   FIG. 2 is a perspective view for explaining details of a mechanism for changing the light diffusibility of the illumination light with the light diffusion plate 23 as the center.

光拡散板２３は、上面または下面（照明光が入射する側の面）の少なくとも１面が光拡散面となっている。これは、シボ処理、表面粗し処理、つや消しコーティング処理、光拡散樹脂の塗布処理等、ランダムな拡散面を形成する処理によって形成されている。あるいは微細なプリズムシート面からなる光拡散面としてもよい。また、別の形態として、光拡散板を構成する透明部材の中に光拡散物質（例えば乳白色の光散乱微粒子）を混ぜて、光拡散板２３全体を光散乱物としてもよい。この場合は、内部で光散乱が生じるため、その下面または上面に光拡散処理は施すことは必須では無い。   In the light diffusion plate 23, at least one of the upper surface and the lower surface (the surface on which illumination light is incident) is a light diffusion surface. This is formed by a process for forming a random diffusion surface, such as a graining process, a surface roughening process, a matte coating process, or a light diffusing resin coating process. Or it is good also as a light-diffusion surface which consists of a fine prism sheet surface. As another form, a light diffusing material (for example, milky white light scattering fine particles) may be mixed in a transparent member constituting the light diffusing plate, and the entire light diffusing plate 23 may be used as a light scatterer. In this case, since light scattering occurs inside, it is not essential to perform light diffusion treatment on the lower surface or the upper surface.

光拡散板２３は、モータ駆動機構２４によって、ガイドシャフト３０に案内されて図のＡ−Ｂ方向に直線的に移動可能で、どちらかの移動端部の位置に切替可能である。図１（ａ）のようにＡの方向に移動させると、照明ユニット２２から射出するスリット状の照明光が光拡散板２３を通過する。図１（ｂ）のようにＢの方向に移動させると、照明光が光拡散板２３を通過しない。なお、直線的な移動にせずに、回転によって光拡散板２３を照明光が通過する位置と通過しない位置との間で切り替えるようにしてもよい。位置センサ３１は、光拡散板２３が図１（ａ）（ｂ）どちらの位置にあるかを検出するセンサである。   The light diffusing plate 23 is guided by the guide shaft 30 by the motor drive mechanism 24 and can move linearly in the direction AB in the figure, and can be switched to the position of either moving end. When moved in the direction A as shown in FIG. 1A, slit-shaped illumination light emitted from the illumination unit 22 passes through the light diffusion plate 23. If it is moved in the direction B as shown in FIG. 1B, the illumination light does not pass through the light diffusion plate 23. Instead of linear movement, the light diffusion plate 23 may be switched between a position where the illumination light passes and a position where the illumination light does not pass by rotation. The position sensor 31 is a sensor that detects which position of the light diffusing plate 23 is in FIG.

この例は、光拡散板２３を介して照明する状態と、光拡散板２３を介さずに照明する状態とに切り替えるものである。変形例として、図３に示すような、光拡散性が異なる複数の領域（ここでは領域Ａ、領域Ｂの２つ）を有する光拡散板２３を用いて、複数のどの領域を介して照明するかを切り替えるようにしてもよい。この場合、領域Ａが領域Ｂよりも光拡散性が大きなものとする。   In this example, switching is performed between a state in which illumination is performed through the light diffusion plate 23 and a state in which illumination is performed without using the light diffusion plate 23. As a modification, illumination is performed through any of the plurality of regions using a light diffusion plate 23 having a plurality of regions (here, two regions A and B) having different light diffusivities as shown in FIG. You may make it switch. In this case, it is assumed that the region A has a larger light diffusibility than the region B.

次に、本例のマルチファンクションプリンタをスキャナとして使用する場合について説明する。   Next, a case where the multifunction printer of this example is used as a scanner will be described.

ユーザーは、紙等の通常の原稿を読み取る場合は、載置面２０に原稿をそのまま置く。一方、ディスク媒体のレーベル面を読み取る場合には、ユーザーは、図４に示すように、ディスク媒体装着用のトレイ１にディスク媒体２を装着して、そのレーベル面を下向きにして載置面２０の上に置く。そして、読み取りの際に余計な外光は入らないように、装置の上蓋６を閉じる。   When reading a normal document such as paper, the user places the document on the placement surface 20 as it is. On the other hand, when reading the label surface of the disk medium, the user mounts the disk medium 2 on the disk medium mounting tray 1 as shown in FIG. Put on the top. Then, the upper lid 6 of the apparatus is closed so that extra external light does not enter during reading.

ここでユーザーは、スキャン開始ボタンを押す。すると装置は光拡散板２３を図１（ｂ）の状態にして読み取りを行なう。ここで、載置面２０の上に置いた原稿が、回折反射特性を持ったディスク媒体であるか否か装置が自動的に判別する。   Here, the user presses a scan start button. Then, the apparatus reads the light diffusing plate 23 as shown in FIG. Here, the apparatus automatically determines whether or not the document placed on the placement surface 20 is a disk medium having diffraction reflection characteristics.

この判別は次のようにして行なう。信号処理部２９において、上記読み取りの結果得られた読取画像を元に、画像認識処理によって、トレイに設けた識別マークを認識する、あるいはトレイとディスク（所定サイズの四角形とその内側の円形）の形状を認識する。その結果、トレイであることが認識されたら、読み取る媒体がディスク媒体であると判別する。なお、トレイを用いずに、直接ディスク媒体の形状（例えば直径１２ｃｍ又は８ｃｍの円形で中心に孔がある）を画像認識するようにしてもよい。その場合はトレイを用いずに、載置面２０の上に直接ディスク媒体を置く。   This determination is performed as follows. The signal processing unit 29 recognizes the identification mark provided on the tray by the image recognition process based on the read image obtained as a result of the reading, or the tray and the disc (a square of a predetermined size and an inner circle). Recognize the shape. As a result, if the tray is recognized, it is determined that the medium to be read is a disk medium. Instead of using the tray, the shape of the disk medium (for example, a circle having a diameter of 12 cm or 8 cm and a hole in the center) may be recognized as an image. In that case, the disk medium is placed directly on the mounting surface 20 without using a tray.

もし、載置面２０に置いた原稿がディスク媒体ではないと判別されたら、信号処理部２９は上記の読取画像をそのまま画像信号として出力する。   If it is determined that the document placed on the placement surface 20 is not a disk medium, the signal processing unit 29 outputs the read image as it is as an image signal.

もし、ディスク媒体であると判別されたら、装置は、光拡散板２３が図１（ａ）の位置に来るようにモータ駆動機構２４で移動させる。そして、再度の読み取りを行なう。この二度目の読み取りでは、照明光は光拡散板２３によって光拡散性が通常時よりも大きくなるので、読み取り面が回折反射面であってもムラの無い読取画像を得ることができる。なお、光拡散板２３での拡散による照明光量の低下の分だけ、スキャンの速度を通常時よりも遅くして、ラインセンサ２８が受ける光の露光量（受光光量×露光時間）が読み取りに十分となるようにする。そして、信号処理部２９はこの二度目の読取画像を画像信号として出力する。   If it is discriminated that it is a disk medium, the apparatus moves it with the motor drive mechanism 24 so that the light diffusing plate 23 comes to the position of FIG. Then, the reading is performed again. In this second reading, since the illumination light has a light diffusibility that is greater than normal due to the light diffusing plate 23, a read image having no unevenness can be obtained even if the reading surface is a diffraction reflection surface. Note that the amount of exposure of light received by the line sensor 28 (received light amount × exposure time) is sufficient for reading by making the scan speed slower than normal by the amount of decrease in the amount of illumination light due to diffusion at the light diffusion plate 23. To be. Then, the signal processing unit 29 outputs the second read image as an image signal.

このように、ディスク媒体を読み取るときだけ、照明光の光拡散性を高めてムラのない読み取りを行なう。それ以外の原稿を読み取るときは、光量低下のない照明により高速な読み取りを行なう。すなわち、媒体の読取面が回折反射面を含んでいる場合、回折反射面を含んでいない場合にフレキシブルに対応して、それぞれで最適な読み取りを行なうことができる。   In this way, only when reading the disk medium, the light diffusibility of the illumination light is enhanced and reading is performed without unevenness. When reading other documents, high-speed reading is performed with illumination that does not reduce the amount of light. In other words, when the reading surface of the medium includes a diffractive reflection surface, it is possible to flexibly cope with the case where the diffractive reflection surface is not included, and optimal reading can be performed for each.

一方、マルチファンクションプリンタを、プリンタとして使用して、レーベル面に文字や画像のプリントを行なうこともできる。その場合は、ユーザーは、図５のように、プリンタ本体の前蓋７を開けて、ディスク媒体２を装着したトレイ１を搬送機構８に差し込む。そして搬送機構８でトレイを搬送しながら、装置内部のプリント部にてレーベル面にプリントを行なう。プリント部は、ヒーター素子あるいはピエゾ素子を用いたインクジェット方式により、インクを吐出させてプリントを行なう。   On the other hand, a multifunction printer can be used as a printer to print characters and images on the label surface. In that case, the user opens the front lid 7 of the printer body and inserts the tray 1 loaded with the disk medium 2 into the transport mechanism 8 as shown in FIG. Then, while the tray is transported by the transport mechanism 8, printing is performed on the label surface at the print unit inside the apparatus. The printing unit performs printing by ejecting ink by an ink jet method using a heater element or a piezo element.

また、スキャナ部で読み取ったディスク媒体のレーベル面の画像を、別のディスク媒体のレーベル面にプリント部でプリントする、レーベル画像のコピー機能も備えている。   Also, a label image copy function is provided, in which an image on a label surface of a disk medium read by a scanner unit is printed on a label surface of another disk medium by a print unit.

なお、以上の説明では、原稿がディスク媒体であるか否か装置が自動的に判別するようにしたが、ユーザーの指示により判別するようにしてもよい。回折反射面を持った原稿を読み取る場合は、ユーザーがボタン操作等で装置に入力して、その入力に基づいて装置は、図１（ａ）のように光拡散板２３を照明光の光路に挿入して、読み取り動作を行なう。これにより、二度のスキャンが一度で済むので、より迅速な読み取りが可能となる。また、ディスク形状以外の反射回折面を持った原稿であっても、ムラのない読み取りが可能となる。   In the above description, the apparatus automatically determines whether or not the document is a disk medium, but it may be determined based on a user instruction. When reading a document having a diffractive reflection surface, a user inputs to the apparatus by a button operation or the like, and based on the input, the apparatus uses the light diffusion plate 23 as an optical path of illumination light as shown in FIG. Insert and read. As a result, two scans are required only once, so that more rapid reading is possible. Further, even a document having a reflective diffraction surface other than the disk shape can be read without unevenness.

マルチファンクションプリンタ本体内のスキャナ部の断面図Sectional view of the scanner section in the multifunction printer 照明光の光拡散性を変化させる機構の斜視図Perspective view of mechanism for changing light diffusibility of illumination light 光拡散板の変形例を示す図The figure which shows the modification of a light diffusing plate レーベル面の読み取りを行なう場合の、スキャナへのトレイの載置を示す図Diagram showing tray placement on the scanner when reading the label surface レーベル面にプリントを行なう場合の、プリンタへのトレイの装着を示す図Diagram showing tray mounting on printer when printing on label side 回折反射面によるムラの発生と本発明の概念を説明する図The figure explaining generation | occurrence | production of the nonuniformity by a diffraction reflective surface, and the concept of this invention 回折反射面によるムラの発生した状態を示す図The figure which shows the state where the nonuniformity due to the diffraction reflective surface occurs

符号の説明Explanation of symbols

１ トレイ
２ ディスク媒体
２０ 載置面
２２ 照明ユニット
２３ 光拡散板
２４ モータ駆動機構 DESCRIPTION OF SYMBOLS 1 Tray 2 Disc medium 20 Mounting surface 22 Illumination unit 23 Light diffusing plate 24 Motor drive mechanism

Claims (13)

載置面の上に置かれた媒体の読取面を該載置面の側から照明する照明ユニットと、前記読取面を光学的に読み取る読取ユニットを備え、読み取った画像の画像信号を出力する画像読取装置であって、
前記照明ユニットの照明光の光拡散性を変化させる機構を有し、読み取る媒体に応じて光拡散性を変化させることを特徴とする画像読取装置。 An image that includes an illumination unit that illuminates a reading surface of a medium placed on the mounting surface from the side of the mounting surface, and a reading unit that optically reads the reading surface, and outputs an image signal of the read image A reading device,
An image reading apparatus having a mechanism for changing the light diffusibility of illumination light of the illumination unit, and changing the light diffusibility according to a medium to be read. 前記光拡散性の変化に応じて、前記読取ユニットでの読み取り速度を変化させる手段を有する、請求項１記載の画像読取装置。   The image reading apparatus according to claim 1, further comprising a unit that changes a reading speed of the reading unit according to the change in the light diffusibility. 前記機構は、前記照明ユニットの光源と前記載置面の間の光路にて、光拡散板を移動させる機構を有し、前記光拡散板を介して照明する状態と、前期光拡散板を介さずに照明する状態とに切り替えるものである、請求項１又は２記載の画像読取装置。   The mechanism includes a mechanism for moving a light diffusing plate in an optical path between the light source of the lighting unit and the mounting surface, and a state of illuminating through the light diffusing plate and a light diffusing plate in the previous period. The image reading apparatus according to claim 1, wherein the image reading apparatus is switched to a state of illuminating without being switched. 前記機構は、前記照明ユニットの光源と前記載置面の間の光路にて、光拡散性が異なる複数の領域を有する光拡散板を移動させる機構を有し、前記複数のどの領域を介して照明するかを切り替えるものである、請求項１又は２記載の画像読取装置。   The mechanism has a mechanism for moving a light diffusing plate having a plurality of regions having different light diffusivities in an optical path between the light source of the illumination unit and the mounting surface, and through any of the plurality of regions. The image reading device according to claim 1, wherein the image reading device switches between illumination. 前記媒体としてディスク媒体を読み取る場合は、それ以外の媒体を読み取る場合よりも、前記照明光の光拡散性を大きくする、請求項１乃至４のいずれか記載の画像読取装置。   5. The image reading apparatus according to claim 1, wherein when the disk medium is read as the medium, the light diffusibility of the illumination light is made larger than when the other medium is read. 前記載置面の上に置かれる媒体が、ディスク媒体であることを判別する判別手段を有する、請求項５記載の画像読取装置。   The image reading apparatus according to claim 5, further comprising a determination unit configured to determine that the medium placed on the mounting surface is a disk medium. 前記判別手段は、前記読み取った画像の画像信号からディスク媒体であるかを判別するものであり、ディスク媒体であることを判別したら、照明光の光拡散性をより大きくして再度の読み取りを行なう、請求項６記載の画像読取装置。   The discriminating unit discriminates whether or not the disc medium is a disc medium from the image signal of the read image. If the disc medium is discriminated, the light diffusibility of the illumination light is increased and the reading is performed again. The image reading apparatus according to claim 6. 前記ディスク媒体はトレイに装着されて前記載置面の上に置かれ、
前記判別手段は、前記画像信号からトレイを認識したらディスク媒体であることを判別する、請求項６又は７記載の画像読取装置。 The disk medium is mounted on a tray and placed on the mounting surface.
8. The image reading apparatus according to claim 6, wherein the discriminating unit discriminates the disc medium when the tray is recognized from the image signal. 前記判別手段は、前記画像信号から媒体の形状を認識してディスク媒体であることを判別する、請求項６又は７記載の画像読取装置。   8. The image reading apparatus according to claim 6, wherein the determination unit recognizes the shape of a medium from the image signal and determines that the medium is a disk medium. 前記判別手段は、ユーザーの入力によってディスク媒体であることを判別する、請求項６又は７記載の画像読取装置。   The image reading apparatus according to claim 6, wherein the determination unit determines that the disk medium is input by a user input. 請求項１乃至１０のいずれか記載の画像読取装置と、媒体にプリントを行なうプリント部を一体に備えたことを特徴とする画像読取記録装置。   11. An image reading and recording apparatus comprising: the image reading apparatus according to claim 1; and a printing unit that performs printing on a medium. 前記画像読取装置で読み取ったディスク媒体のレーベル面の画像を、別のディスク媒体のレーベル面に前記プリント部でプリントする手段を備える、請求項１１記載の画像読取記録装置。   12. The image reading and recording apparatus according to claim 11, further comprising means for printing an image on a label surface of a disk medium read by the image reading apparatus on the label surface of another disk medium by the printing unit. 前記プリント部はインクジェット方式でプリントを行なう、請求項１１又は１２記載の画像読取記録装置。   The image reading and recording apparatus according to claim 11, wherein the printing unit performs printing by an inkjet method.
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021044650A (en) * 2019-09-10 2021-03-18 ブラザー工業株式会社 Image processing device, program and image processing method

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0331839A (en) * 1989-06-28 1991-02-12 Canon Inc Picture reader
JPH05142672A (en) * 1991-11-19 1993-06-11 Konica Corp Original cassette for image reader, original cassette supply device and original cassette carrying device
JPH0787269A (en) * 1993-09-09 1995-03-31 Nikon Corp Image reader
JPH10261072A (en) * 1997-03-18 1998-09-29 Houdenshiya:Kk Diffusion filter for image scanner
JP2006091979A (en) * 2004-09-21 2006-04-06 Seiko Epson Corp Image processing system and image processing method
JP2007102641A (en) * 2005-10-06 2007-04-19 Seiko Epson Corp Image reader and image reading method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0331839A (en) * 1989-06-28 1991-02-12 Canon Inc Picture reader
JPH05142672A (en) * 1991-11-19 1993-06-11 Konica Corp Original cassette for image reader, original cassette supply device and original cassette carrying device
JPH0787269A (en) * 1993-09-09 1995-03-31 Nikon Corp Image reader
JPH10261072A (en) * 1997-03-18 1998-09-29 Houdenshiya:Kk Diffusion filter for image scanner
JP2006091979A (en) * 2004-09-21 2006-04-06 Seiko Epson Corp Image processing system and image processing method
JP2007102641A (en) * 2005-10-06 2007-04-19 Seiko Epson Corp Image reader and image reading method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2021044650A (en) * 2019-09-10 2021-03-18 ブラザー工業株式会社 Image processing device, program and image processing method
JP7307402B2 (en) 2019-09-10 2023-07-12 ブラザー工業株式会社 Image processing device, program, image processing method

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