JPH06311303A - Long image sensor - Google Patents
Long image sensorInfo
- Publication number
- JPH06311303A JPH06311303A JP5097594A JP9759493A JPH06311303A JP H06311303 A JPH06311303 A JP H06311303A JP 5097594 A JP5097594 A JP 5097594A JP 9759493 A JP9759493 A JP 9759493A JP H06311303 A JPH06311303 A JP H06311303A
- Authority
- JP
- Japan
- Prior art keywords
- light receiving
- receiving element
- image sensor
- document
- scanning
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000000758 substrate Substances 0.000 description 16
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000003491 array Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 229920001187 thermosetting polymer Polymers 0.000 description 1
Landscapes
- Facsimile Heads (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は長尺イメージセンサ、特
に原稿を送りながら１ラインの情報を傾きなく読むこと
ができる改良された長尺イメージセンサに関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a long image sensor, and more particularly to an improved long image sensor capable of reading one line of information without inclination while feeding a document.
【０００２】[0002]
【従来の技術】長尺イメージセンサでは、受光素子を一
直線上に配置し、情報を１ラインごとに読み取ってい
る。2. Description of the Related Art In a long image sensor, light receiving elements are arranged on a straight line and information is read line by line.
【０００３】ＭＯＳ型受光素子で構成された長尺イメー
ジセンサの場合、受光素子が直線状に配置され受光素子
列を形成している。情報の読取りはその受光素子列によ
って原稿が１ラインごとに走査されて行われるが、走査
はクロックパルスに同期して１画素ごとすなわち１受光
素子ごとに順次出力を取り出すことにより行われる。従
って、１ラインの情報の読取りには、受光素子列による
１回の原稿走査に要する時間が必要である。In the case of a long image sensor composed of MOS type light receiving elements, the light receiving elements are linearly arranged to form a light receiving element row. The reading of information is performed by scanning the document line by line by the light receiving element array, and the scanning is performed by sequentially extracting the output for each pixel, that is, for each light receiving element in synchronization with the clock pulse. Therefore, the reading of the information of one line requires a time required for one scanning of the original by the light receiving element array.
【０００４】このような長尺イメージセンサにおいて
は、受光素子列を複数の部分に分割し、分割された各受
光素子列を同時に駆動することにより読取り時間の短縮
化が図られている。このようなセンサの例が特開平４−
１８８９４０号公報に示されている。In such a long image sensor, the reading time is shortened by dividing the light receiving element array into a plurality of parts and driving each of the divided light receiving element arrays at the same time. An example of such a sensor is Japanese Unexamined Patent Publication No.
No. 188,940.
【０００５】[0005]
【発明が解決しようとする課題】しかし上記従来の長尺
イメージセンサにおいては、情報の読取りは原稿を送り
ながら行うのが一般的である。従って、受光素子列によ
って原稿を走査する間にも原稿が移動し、走査開始時点
における原稿の読取り位置と走査終了時点における原稿
の読取り位置とを結ぶ直線を走査開始点側から見ると、
原稿の送り方向とは反対方向に傾いた直線になってい
る。However, in the above-described conventional long image sensor, it is general that the reading of information is performed while the original is being fed. Therefore, the document is moved even while scanning the document by the light receiving element array, and when a straight line connecting the document reading position at the scanning start point and the document reading position at the scanning end point is seen from the scanning start point side,
It is a straight line that is tilted in the opposite direction to the original feeding direction.
【０００６】これらの様子が図３、図４に示される。図
３は受光素子列を分割せずに走査する場合であり、図４
は受光素子列を３つに分割して走査する場合である。そ
れぞれ、走査線３１の走査開始点３２と走査終了点３３
とは原稿の送り方向３０にΔｘの長さだけ位置がずれて
いる。Δｘは原稿の送り速度と走査速度によって決定さ
れる。These states are shown in FIGS. 3 and 4. FIG. 3 shows a case where scanning is performed without dividing the light receiving element array.
Shows the case where the light receiving element array is divided into three and scanned. The scanning start point 32 and the scanning end point 33 of the scanning line 31, respectively.
Is displaced from the original feeding direction 30 by a length of Δx. Δx is determined by the document feeding speed and scanning speed.
【０００７】このため読み取られた情報を再生すると、
原稿の送り方向に傾いた像となり再生された情報が見ず
らくなるという問題があった。Therefore, when the read information is reproduced,
There is a problem that the reproduced information becomes difficult to see because the image becomes an image inclined in the feeding direction of the document.
【０００８】特に受光素子列を複数の部分に分割した場
合には、本来一直線上にあるべき情報が途中の数箇所で
段差が付いていて余計見ずらくなっていた。In particular, when the light receiving element array is divided into a plurality of parts, the information originally supposed to be on a straight line has steps at several points on the way, which makes it more difficult to see.
【０００９】さらにΔｘを極力小さくしておかないと、
副走査方向（原稿送り方向）の解像度を高くできず、高
解像度の要求に対応できないという問題もあった。Further, if Δx is made as small as possible,
There is also a problem in that the resolution in the sub-scanning direction (original feeding direction) cannot be increased, and the demand for high resolution cannot be met.
【００１０】本発明は上記従来の課題に鑑みなされたも
のであり、その目的は、原稿を送りながら情報の読取り
を行っても、再生された原稿に傾きや段差が生じないよ
う、原稿の横方向の一直線上に配列された情報を上下に
ずれること無く読み取ることができ、高解像度が要求さ
れる装置にも使用できる長尺イメージセンサを提供する
ことにある。The present invention has been made in view of the above-described conventional problems, and an object thereof is to prevent the reproduced document from being inclined or stepped even if information is read while the document is being fed. It is an object of the present invention to provide a long image sensor that can read information arranged on a straight line in a direction without shifting vertically and can be used even in an apparatus requiring high resolution.
【００１１】[0011]
【課題を解決するための手段】上記目的を達成するため
に、本発明は、原稿を送りながら原稿上の情報を読み取
る長尺イメージセンサであって、原稿送り方向に概略直
行して配列されたＭＯＳ型受光素子列を含み、前記受光
素子列の走査終点側を走査開始側より原稿送り速度に対
応する長さだけ原稿送り方向に傾けたことを特徴とす
る。In order to achieve the above object, the present invention is a long image sensor for reading information on a document while feeding the document, which is arranged substantially orthogonal to the document feeding direction. It is characterized in that it includes a MOS type light receiving element array, and the scanning end side of the light receiving element array is tilted in the document feeding direction by a length corresponding to the document feeding speed from the scanning start side.
【００１２】[0012]
【作用】上記構成によれば、受光素子列が原稿送り方向
に原稿送り速度に対応する長さだけ傾いているので、受
光素子列による走査の間に、原稿送りによって原稿の位
置がずれていっても、走査自体は原稿の横方向の一直線
上に傾きなく行うことができる。According to the above construction, since the light receiving element array is tilted in the document feeding direction by the length corresponding to the document feeding speed, the position of the document is displaced by the document feeding during scanning by the light receiving element array. However, the scanning itself can be performed without tilting on the straight line in the horizontal direction of the document.
【００１３】[0013]
【実施例】以下、本発明の好適な実施例を図面に基づい
て説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT A preferred embodiment of the present invention will be described below with reference to the drawings.
【００１４】図１には、本発明の好適な実施例の受光素
子列の配列の様子が示される。FIG. 1 shows the arrangement of light receiving element arrays according to a preferred embodiment of the present invention.
【００１５】図１においては、受光素子列を３つの部分
に分割した例が示されており、ベース基板１０の上に３
つのセンサ基板１１、１２、１３が設けられ、さらにそ
の上に受光素子チップ１４が直線状に設けられて受光素
子列２０を構成している。各受光素子チップ１４には受
光素子が設けられている。FIG. 1 shows an example in which the light receiving element array is divided into three parts, which are arranged on the base substrate 10.
One sensor substrate 11, 12, 13 is provided, and the light receiving element chip 14 is linearly provided thereon to form a light receiving element array 20. Each light receiving element chip 14 is provided with a light receiving element.
【００１６】受光素子列２０は、センサ基板１１、１
２、１３を傾けることにより、その走査終点側（図の右
側）が原稿送り方向３０に傾けられている。この傾きは
原稿送り速度に対応して決められる。The light receiving element array 20 includes sensor substrates 11 and 1
By tilting 2 and 13, the scanning end point side (right side in the drawing) is tilted in the document feeding direction 30. This inclination is determined according to the document feeding speed.
【００１７】次に本発明をファクシミリに応用する場合
を考える。現行のファクシミリの規格であるＧ３規格に
おいては、Ａ４原稿の場合、分割されていない受光素子
列による１ラインの走査時間が５ｍ秒であり、この間に
原稿が０．１３ｍｍ移動する。一方、本実施例の場合に
は、受光素子列２０は、夫々３つに分割された受光素子
列の１つの部分なので、その走査時間は５／３ｍ秒とな
り、この間に原稿が移動する距離は０．１３ｍｍ／３＝
０．０４ｍｍとなる。従って、各受光素子列２０の走査
終点側を走査開始側より原稿送り方向３０に０．０４ｍ
ｍ傾けておけばよいことになる。Next, consider the case where the present invention is applied to a facsimile. In the G3 standard, which is the current facsimile standard, in the case of an A4 original, the scanning time for one line by the undivided light receiving element array is 5 ms, and the original moves 0.13 mm during this period. On the other hand, in the case of the present embodiment, since the light receiving element array 20 is one part of the light receiving element array divided into three parts, the scanning time is 5/3 msec, and the distance that the document moves during this period is 0.13 mm / 3 =
It becomes 0.04 mm. Therefore, the scanning end point side of each light receiving element array 20 is 0.04 m in the document feeding direction 30 from the scanning start side.
It will be good if you tilt it.
【００１８】本発明において特徴的なことは、原稿送り
速度に対応して受光素子列２０を原稿送り方向３０に傾
けた点にある。これによって、原稿を送りながらでも原
稿をその横方向の一直線上に傾きなく走査することがで
きる。A feature of the present invention is that the light receiving element array 20 is tilted in the document feeding direction 30 according to the document feeding speed. As a result, it is possible to scan the document on the straight line in the lateral direction without tilting it while feeding the document.
【００１９】受光素子チップ１４は、熱硬化性樹脂から
なるダイボンドペーストによりセンサ基板１１、１２、
１３に固着されている。この固着工程はテレビ画面で受
光素子チップ１４の位置を確認しながら行うので、受光
素子チップ１４を正確に位置合わせすることができる。The light-receiving element chip 14 is made of a die-bonding paste made of a thermosetting resin so that the sensor substrates 11, 12,
It is fixed to 13. Since this fixing step is performed while confirming the position of the light receiving element chip 14 on the television screen, the light receiving element chip 14 can be accurately aligned.
【００２０】図２に示されるようにセンサ基板１１、１
２、１３はネジ２１によってベース基板１０に取り付け
られる。この時に上述の通り所定の距離だけセンサ基板
１１、１２、１３を傾ける必要があり、しかもその距離
は非常に小さいので、センサ基板１１、１２、１３の位
置決めには高い精度が要求される。As shown in FIG. 2, the sensor substrates 11 and 1
The screws 2 and 13 are attached to the base substrate 10 with screws 21. At this time, it is necessary to incline the sensor substrates 11, 12, and 13 by a predetermined distance as described above, and since the distance is very small, high accuracy is required for positioning the sensor substrates 11, 12, and 13.
【００２１】この位置決めの方法としては、例えば両側
のセンサ基板１１、１３を位置決めピン２２によって位
置決めし、その状態でネジ２１を締め込んで両側のセン
サ基板１１、１３を固定する。次に両側のセンサ基板１
１、１３及び中央のセンサ基板１２の夫々対応する位置
に設けられた位置合わせ用目印２３によって中央のセン
サ基板１２の位置を決定し、ネジ２１を締め込んで中央
のセンサ基板１２を固定する、ということが考えられ
る。As a method of this positioning, for example, the sensor boards 11 and 13 on both sides are positioned by the positioning pins 22, and the screws 21 are tightened in this state to fix the sensor boards 11 and 13 on both sides. Next, the sensor boards 1 on both sides
1, 13 and the central sensor substrate 12 are respectively determined by the positioning marks 23 provided at corresponding positions of the central sensor substrate 12, and the screw 21 is tightened to fix the central sensor substrate 12. It is possible that
【００２２】この際、各センサ基板１１、１２、１３を
接着剤によりベース基板１０に仮止めして作業すれば、
より高い位置決め精度が得られる。At this time, if the sensor substrates 11, 12, and 13 are temporarily fixed to the base substrate 10 with an adhesive to work,
Higher positioning accuracy can be obtained.
【００２３】[0023]
【発明の効果】以上説明したように、本発明によれば、
受光素子列が原稿送り方向に原稿送り速度に対応する長
さだけ傾いているので、受光素子列による走査の間に、
原稿送りによって原稿の位置がずれていっても、走査自
体は原稿の横方向の一直線上に傾きなくすることができ
る。この結果、原稿を送りながら情報の読取りを行って
も、再生された原稿に傾きや段差が生じず、高解像度が
要求される装置にも使用できる長尺イメージセンサを提
供できる。As described above, according to the present invention,
Since the light receiving element array is tilted in the document feeding direction by the length corresponding to the document feeding speed, during scanning by the light receiving element array,
Even if the position of the document is shifted by feeding the document, the scanning itself can be prevented from tilting in a straight line in the lateral direction of the document. As a result, it is possible to provide a long image sensor that can be used in an apparatus that requires high resolution without causing a tilt or a step in a reproduced document even when reading information while feeding the document.
【図１】本発明に係る長尺イメージセンサの好適な実施
例を示す図である。FIG. 1 is a diagram showing a preferred embodiment of a long image sensor according to the present invention.
【図２】図１におけるセンサ基板の位置決め方法の説明
図である。FIG. 2 is an explanatory diagram of a method of positioning the sensor substrate in FIG.
【図３】従来の長尺イメージセンサの走査方法の説明図
である。FIG. 3 is an explanatory diagram of a scanning method of a conventional long image sensor.
【図４】従来の長尺イメージセンサの走査方法の説明図
である。FIG. 4 is an explanatory diagram of a scanning method of a conventional long image sensor.
１０ ベース基板 １１、１２、１３ センサ基板 １４ 受光素子チップ ２０ 受光素子列 10 base substrate 11, 12, 13 sensor substrate 14 light receiving element chip 20 light receiving element array
Claims (1)
る長尺イメージセンサであって、 原稿送り方向に概略直行して配列されたＭＯＳ型受光素
子列を含み、 前記受光素子列の走査終点側を走査開始側より原稿送り
速度に対応する長さだけ原稿送り方向に傾けたことを特
徴とする長尺イメージセンサ。1. A long image sensor for reading information on an original while feeding the original, including a MOS type light receiving element array arranged substantially orthogonal to the original feeding direction, and a scanning end side of the light receiving element array. A long image sensor, in which is inclined in the document feeding direction by a length corresponding to the document feeding speed from the scanning start side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5097594A JPH06311303A (en) | 1993-04-23 | 1993-04-23 | Long image sensor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5097594A JPH06311303A (en) | 1993-04-23 | 1993-04-23 | Long image sensor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06311303A true JPH06311303A (en) | 1994-11-04 |
Family
ID=14196568
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5097594A Pending JPH06311303A (en) | 1993-04-23 | 1993-04-23 | Long image sensor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06311303A (en) |
-
1993
- 1993-04-23 JP JP5097594A patent/JPH06311303A/en active Pending
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