JPS62183255A - Original reader - Google Patents
Original readerInfo
- Publication number
- JPS62183255A JPS62183255A JP61024379A JP2437986A JPS62183255A JP S62183255 A JPS62183255 A JP S62183255A JP 61024379 A JP61024379 A JP 61024379A JP 2437986 A JP2437986 A JP 2437986A JP S62183255 A JPS62183255 A JP S62183255A
- Authority
- JP
- Japan
- Prior art keywords
- document
- reading
- original
- roller
- read
- 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
- 238000001514 detection method Methods 0.000 claims description 26
- 238000003708 edge detection Methods 0.000 claims description 12
- 230000000994 depressogenic effect Effects 0.000 abstract 1
- 238000011144 upstream manufacturing Methods 0.000 description 7
- 230000001629 suppression Effects 0.000 description 5
- 230000032258 transport Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 2
- 230000037431 insertion Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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- Facsimile Scanning Arrangements (AREA)
- Facsimiles In General (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
本発明は原稿を搬送する手段として単一の搬送ローラを
用いた原稿読取装置に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a document reading device that uses a single conveyance roller as means for conveying a document.
従来の技術
従来の原稿読取装置は、第２図に示すように、原稿１を
読取位置に向けて搬送する一対の搬送ローラ２と、原稿
読取位置に配置された原稿読取ユニット３及び読取ロー
ラ４と、原稿検知センサ５等を有し、原稿読取ユニット
３は原稿照明用の光源６、レンズ７、読取素子８等を有
している。読取素子８には読取制御部９が接続されてい
る。搬送ローラ２及び読取ローラ４には、両者を同期し
て回転駆動するよう単一の駆動系１０が連結されている
。更に、原稿検知センサ５、光源６、読取制脚部９、駆
動系１０等には制御部１１が接続されている。2. Description of the Related Art As shown in FIG. 2, a conventional document reading device includes a pair of transport rollers 2 for transporting a document 1 toward a reading position, and a document reading unit 3 and a reading roller 4 arranged at the document reading position. The document reading unit 3 includes a light source 6 for illuminating the document, a lens 7, a reading element 8, and the like. A reading control section 9 is connected to the reading element 8 . A single drive system 10 is connected to the conveyance roller 2 and the reading roller 4 so as to rotate them synchronously. Further, a control section 11 is connected to the document detection sensor 5, the light source 6, the reading leg section 9, the drive system 10, and the like.
上記装置において、原稿１は搬送ローラ２によって読取
位置に向かって搬送され、原稿検知センサ５によって先
端が検知された後、既知の距離ｄを搬送されて原稿読取
位置Ｘに到達し、読取が開始される。その後、原稿１は
搬送ローラ２及び読取ローラ４によって搬送され、原稿
読取ユニット３によって読み取られる原稿１の後端が、
原稿検知センサ５に到達したことが検知された後、既知
の距離ｄを搬送されて、読取が終了する。In the above device, the document 1 is conveyed by the conveyance roller 2 toward the reading position, and after the leading edge is detected by the document detection sensor 5, it is conveyed a known distance d and reaches the document reading position X, where reading begins. be done. After that, the document 1 is conveyed by the conveyance roller 2 and the reading roller 4, and the trailing edge of the document 1 read by the document reading unit 3 is
After it is detected that the document has reached the document detection sensor 5, the document is conveyed a known distance d, and reading is completed.
発明が解決しようとする問題点
しかし、かかる構成によれば、原稿読取位置の読取ロー
ラのほかに、原稿搬送用の一対の搬送ローラを必要とし
、構成が複雑となるという問題点がある。Problems to be Solved by the Invention However, with this configuration, there is a problem in that in addition to the reading roller at the document reading position, a pair of conveyance rollers for conveying the document are required, making the configuration complicated.
上述の問題点は以下の理由で生ずる。即ち、従来の装置
では、原稿読取位置の読取ローラ４の上流に、原稿検知
センサ５を設け、このセンサによる原稿先端、後端の検
知信号を基準どし、検知信号発生後、原稿が原稿検知セ
ンサと読取位置との間の距離ｄを搬送されたことをカウ
ントして原稿の読取開始、停止を制御するように構成し
ているので、読取ローラ４の上流に原稿を搬送する搬送
ローラ２を必要としている。The above-mentioned problem arises for the following reasons. That is, in the conventional apparatus, a document detection sensor 5 is provided upstream of the reading roller 4 at the document reading position, and the detection signals of the leading edge and trailing edge of the document from this sensor are used as a reference, and after the detection signal is generated, the document is detected. Since the configuration is configured to control the start and stop of reading the document by counting the distance d conveyed between the sensor and the reading position, the conveyance roller 2 that conveys the document is placed upstream of the reading roller 4. In need of.
本発明は、上述の問題点に鑑みて為されたもので、一対
の搬送ローラを用いることなく、原稿読取位置に単一の
ローラを設けるのみで、原稿の読取、搬送を行うことの
できる原稿読取装置を提供することを目的とする。The present invention has been made in view of the above-mentioned problems, and it is possible to read and transport a document by simply providing a single roller at the document reading position without using a pair of transport rollers. The purpose is to provide a reading device.
問題点を解決するだめの手段
本発明は上述の問題点を解決するため、原稿読取位置の
上流（原稿搬送方向とは逆の方向）には、なんら搬送ロ
ーラを設けず、原稿読取位置のみに、駆動系に連結され
た読取ローラを設け、且つこの読取ローラに原稿を押付
ける押圧板を設け、この搬送ローラと抑圧板とで原稿の
搬送手段を構成し、更に、原稿読取位置から原稿搬送方
向と逆の方向に予め定められた距離だけ離れた位置に原
稿検知センサを設けると共に、この原稿検知センサから
の信号により前記原稿読取手段を制御する制御手段を設
け、この制御手段が、前記原稿検知センサからの原稿先
端検知信号により直ちに読取を開始させ、且つ原稿後端
検知信号を基準として読取を終了させるという構成を備
えたものである。Means for Solving the Problems In order to solve the above-mentioned problems, the present invention does not provide any conveyance rollers upstream of the document reading position (in the opposite direction to the document conveyance direction), but only at the document reading position. , a reading roller connected to a drive system is provided, a pressing plate is provided for pressing the original onto the reading roller, the transporting roller and the suppression plate constitute a transporting means for the original, and further, the original is transported from the original reading position. A document detection sensor is provided at a position a predetermined distance apart in the opposite direction, and control means is provided for controlling the document reading device based on a signal from the document detection sensor. The apparatus is configured to immediately start reading in response to a document leading edge detection signal from a detection sensor, and to terminate reading based on a document trailing edge detection signal.
作用
本発明は上述の構成によって、原稿を直接、原稿読取位
置に設けた読取ローラと抑圧板との間に差し込むのみで
、原稿を読取ローラにより読取位置を通して搬送でき、
また原稿を差し込む際、原稿検知センサが原稿先端を検
知すると直ちに原稿読取が開始されるので、原稿差し込
み速度が異なっても、常に確実に原稿を先端から読み取
ることができる。更に、読取中は原稿が読取ローラによ
り搬送されるので、原稿後端を原稿検知センサが検知し
た後、その後端検知信号を基準として直ちに、或いは原
稿を予め定めた量だけ搬送した後に読取を終了すること
により原稿の所望位置で読取を終了できる。かくして、
本発明では従来用いたような原稿読取位置上流の搬送ロ
ーラを用いることなく、原稿の搬送と読取の開始、終了
の制御が可能となり、装置を簡略化することができる。According to the above-described structure, the present invention allows the document to be conveyed through the reading position by the reading roller by simply inserting the document directly between the reading roller and the suppression plate provided at the document reading position.
Further, when inserting a document, reading of the document is started immediately when the document detection sensor detects the leading edge of the document, so even if the document insertion speed is different, the document can always be reliably read from the leading edge. Furthermore, since the document is conveyed by the reading roller during reading, after the document detection sensor detects the trailing edge of the document, reading ends immediately based on the trailing edge detection signal, or after the document has been conveyed by a predetermined amount. By doing so, reading can be completed at a desired position on the document. Thus,
According to the present invention, it is possible to control the start and end of conveyance of a document and the start and end of reading without using a conveyance roller upstream of the document reading position, which is conventionally used, and the apparatus can be simplified.
実施例
第１図は本発明の一実施例による原稿読取装置の概略構
成を示す断面図である。同図において、１は原稿、３は
原稿読取位置に配置された原稿読取ユニット、４は読取
ローラである。この読取ローラ４には駆動系１２が接続
され、駆動されている。Embodiment FIG. 1 is a sectional view showing a schematic configuration of a document reading device according to an embodiment of the present invention. In the figure, 1 is a document, 3 is a document reading unit disposed at a document reading position, and 4 is a reading roller. A drive system 12 is connected to this reading roller 4 and is driven.
読取ローラ４の原稿搬送方向の上流（図面の右方向）に
は、何等搬送ローラは設けられていない。No conveyance roller is provided upstream of the reading roller 4 in the document conveyance direction (rightward in the drawing).
原稿読取ユニット３は読取ローラ４に面する側に原稿を
読取ローラ４に押付ける押圧板１３を有し、更に内部に
は、読取ローラ４に押圧板１３を押付けた位置近傍の読
取位置Ｘで原稿１を読み取るための光源６、レンズ７、
読取素子８等からなる原稿読取手段を有している。原稿
読取位置の上流、即ち、原稿の搬送方向とは反対方向に
は、原稿読取位置Ｘから予め定められた距離ｄだけ離れ
た位置に原稿検知センサ５が設けられる。なお、９は読
取素子８制御用の読取制御部、１４は全体の制御部であ
る。この制御部１４は原稿検知センサ５からの信号を受
けて読取制御部９を制御する。その制御内容については
以下の動作説明中で説明する。The document reading unit 3 has a pressing plate 13 for pressing the document against the reading roller 4 on the side facing the reading roller 4, and further has a pressing plate 13 inside thereof at a reading position X near the position where the pressing plate 13 is pressed against the reading roller 4. A light source 6 for reading the original 1, a lens 7,
It has a document reading means including a reading element 8 and the like. A document detection sensor 5 is provided upstream of the document reading position, that is, in a direction opposite to the direction in which the document is conveyed, at a position separated from the document reading position X by a predetermined distance d. Note that 9 is a reading control section for controlling the reading element 8, and 14 is an overall control section. This control section 14 receives a signal from the document detection sensor 5 and controls the reading control section 9 . The details of the control will be explained in the explanation of the operation below.
以上のように構成された原稿読取装置について、以下そ
の動作を説明する。The operation of the document reading device configured as described above will be described below.
読取ローラ４と、そのローラに押圧された押圧板１３は
、ローラ４の回転に伴って原稿１を搬送する機能を有す
る。読み取るべき原稿ｌを手差しにて読取ローラ４と押
圧板１３との間に差し込む。この際、まず原稿先端が原
稿検知センサ５によって検知され、次いでその先端が抑
圧板１３により読取ローラ４に押付けられ、その後、読
取ローラ４により搬送されることとなる。原稿検知セン
サ５からの検知信号が発生すると同時に、制御部１４が
読取制御部９の動作を開始させ、読取位置Ｘを通過する
原稿１の読取が行われる。かくして、原稿を手差しする
速度が異なっても、原稿先端が読取位置に達した時には
、原稿読取は開始されておシ、原稿先端から確実に読み
取ることが可能である。The reading roller 4 and the pressing plate 13 pressed by the reading roller 4 have a function of conveying the document 1 as the roller 4 rotates. A document l to be read is manually inserted between the reading roller 4 and the pressing plate 13. At this time, the leading edge of the document is first detected by the document detection sensor 5, then the leading edge is pressed against the reading roller 4 by the suppression plate 13, and then the document is transported by the reading roller 4. At the same time that the detection signal from the document detection sensor 5 is generated, the control section 14 starts the operation of the reading control section 9, and the document 1 passing through the reading position X is read. In this way, even if the manual feeding speed of the original differs, when the leading edge of the original reaches the reading position, reading of the original starts, and it is possible to reliably read the original starting from the leading edge.
その後、原稿１は読取素子８、読取制御部９により読み
取られながら、読取ローラ４によりその読取速度に同期
した速度で搬送される。原稿後端が原稿検知センサ５を
通過すると、センサ５は原稿後端検知信号を発生する。Thereafter, the original 1 is read by the reading element 8 and the reading control section 9, and is conveyed by the reading roller 4 at a speed synchronized with the reading speed. When the trailing edge of the document passes the document detection sensor 5, the sensor 5 generates a document trailing edge detection signal.
制御部１４はこの信号を受信後、センサ５から読取位置
までの距離ｄを原稿１が搬送された後に、読取を終了さ
せる。ここで、原稿後端検知信号発生後の原稿１の搬送
量のカウントは、読取ローラ４の回転数をカウントする
ことにより可能であり、駆動系１２にパルスモータを用
いた場合には、パルスモータに加えるパルス数をカウン
トすればよい。かくして原稿１の全面が読み取られ、原
稿１は読取ローラ４により、その左方に送り出される。After receiving this signal, the control unit 14 ends the reading after the original 1 has been conveyed the distance d from the sensor 5 to the reading position. Here, the conveyance amount of the document 1 after the document trailing edge detection signal is generated can be counted by counting the number of rotations of the reading roller 4. If a pulse motor is used for the drive system 12, the pulse motor All you have to do is count the number of pulses applied to the The entire surface of the original 1 is thus read, and the original 1 is sent out to the left by the reading roller 4.
以上で１枚の原稿の読取動作が終了する。This completes the reading operation for one document.
なお、上記実施例では原稿検知センサ５による原稿後端
検知信号から、原稿１が距離ｄを搬送された後、読取を
終了するように構成したが、この読取終了時期は適宜変
更可能である。例えば、通常の原稿では原稿末尾に空白
があるので、原稿後端検知後、早めに読取を終了するよ
うにしても良く、更には、読取位置と原稿検知センサ５
との間隔ｄがこの空白の長さよりも短い場合には、原稿
後端検知信号発生と同時に、読取を終了するようにして
もよい。この場合には、原稿後端検知信号により直ちに
読取を終了するため、制御回路が簡単となる利点が得ら
れる。また、原稿後端検知後、原稿の搬送量をカウント
する代わりに、タイマー等により読取終了時期を設定す
るようにしてもよい。In the embodiment described above, the reading is terminated after the document 1 has been conveyed the distance d based on the document trailing edge detection signal from the document detection sensor 5, but the reading end timing can be changed as appropriate. For example, since a normal document has a blank space at the end of the document, reading may be finished early after the trailing edge of the document is detected.
If the distance d between the two blanks is shorter than the blank length, the reading may be terminated at the same time as the document trailing edge detection signal is generated. In this case, since reading is immediately terminated by the document trailing edge detection signal, there is an advantage that the control circuit is simplified. Further, after the trailing edge of the document is detected, instead of counting the conveyance amount of the document, a timer or the like may be used to set the reading end time.
発明の効果
以上の説明から明らかなように、本発明は原稿読取位置
に設けた単一の読取ローラとその読取ローラに原稿を押
付ける抑圧板によって原稿を搬送し、かつ原稿読取位置
上流の原稿検知センサにより原稿先端を検知すると直ち
に原稿読取を開始し、原稿後端の検知信号を基準として
読取を終了させるように構成したものであるので、読取
ローラと抑圧板との間に直接原稿を手差ししても、常に
確実に原稿面を先端から読み取ることができ、且つ読み
取りながら原稿を搬送すると共に自動的に読取終了を行
うことが可能であり、従って、従来用いたような原稿読
取位置上流の搬送ローラを省略して原稿を直接原稿読取
位置に手差しするように構成でき、装置を簡略化できる
という効果を有するものである。Effects of the Invention As is clear from the above description, the present invention conveys a document using a single reading roller provided at the document reading position and a suppression plate that presses the document against the reading roller, and transports the document upstream of the document reading position. The scanner starts reading the original as soon as the leading edge of the original is detected by the detection sensor, and finishes reading based on the detection signal of the trailing edge of the original, so it is not possible to manually feed the original directly between the reading roller and the suppression plate. It is possible to always reliably read the document surface from the leading edge even when the document is being scanned, and it is also possible to convey the document while reading and to automatically finish reading. This has the effect that the document can be manually fed directly to the document reading position without the use of conveyance rollers, and the apparatus can be simplified.
第１図は本発明の一実施例による原稿読取装置の概略断
面図、第２図は従来の原稿読取装置を示す概略断面図で
ある。
１・・・原稿、３・・・原稿読取ユニット、４・・・読
取ローラ、５・・・原稿検知センサ、６・・・光源、７
・・・レンズ、８・・・読取素子、９・・・読取制御部
、１２・・・駆動系、１３・・・押圧板、１４・・・制
御部。
代理人の氏名 弁理士 中 尾 敏 男ほか１名ｌ 厭
塙
３−雁ｇ′１誂耳スユニット
４、さし耳スローラ
５６ 力ａ宕６卆虻スロＣンリ。
Ｇ・−犬＾酒−
９−誂１１５．到−
ｔｚ−に勤王
Ｂ −ＷＥ已下表
第２図FIG. 1 is a schematic cross-sectional view of a document reading device according to an embodiment of the present invention, and FIG. 2 is a schematic cross-sectional view showing a conventional document reading device. DESCRIPTION OF SYMBOLS 1... Original, 3... Original reading unit, 4... Reading roller, 5... Original detection sensor, 6... Light source, 7
. . . Lens, 8 . . . Reading element, 9 . . . Reading control section, 12 . Name of agent: Patent attorney Satoshi Nakao, male, and 1 other person. G・-dog＾sake- 9-誂115. Figure 2 of the table below for B-WE
Claims (3)
取ローラと、この読取ローラに原稿を押付ける押圧板と
、前記読取ローラに前記押圧板を押付けた近傍において
原稿を読み取る原稿読取位置から原稿搬送方向と逆の方
向に予め定められた距離だけ離れた位置に配置された原
稿検知センサと、この原稿検知センサからの信号により
前記原稿読取手段を制御する制御手段とを備え、この制
御手段が、前記原稿検知センサからの原稿先端検知信号
により直ちに読取を開始させ、原稿後端検知信号を基準
として読取を終了させるように構成されていることを特
徴とする原稿読取装置。(1) A reading roller placed at an original reading position and connected to a drive system, a pressing plate that presses the original against the reading roller, and an original reading position where the original is read in the vicinity of the pressing plate pressed against the reading roller. a document detection sensor disposed at a position a predetermined distance away from the document in a direction opposite to the document conveyance direction; and a control means for controlling the document reading means based on a signal from the document detection sensor. A document reading device characterized in that the means is configured to immediately start reading in response to a document leading edge detection signal from the document detection sensor, and to terminate reading based on a document trailing edge detection signal.
信号発生後、原稿が予め予定された距離を搬送された後
で原稿読取を終了させるように構成されていることを特
徴とする特許請求の範囲第１項記載の原稿読取装置。(2) A patent claim characterized in that the control means is configured to end the document reading after the document is conveyed a predetermined distance after the document detection sensor generates a document trailing edge detection signal. The document reading device according to item 1.
信号により直ちに読取を終了させるように構成されてい
ることを特徴とする特許請求の範囲第１項記載の原稿読
取装置。(3) The document reading device according to claim 1, wherein the control means is configured to immediately end reading in response to a document trailing edge detection signal from a document detection sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024379A JPS62183255A (en) | 1986-02-06 | 1986-02-06 | Original reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP61024379A JPS62183255A (en) | 1986-02-06 | 1986-02-06 | Original reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62183255A true JPS62183255A (en) | 1987-08-11 |
Family
ID=12136551
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP61024379A Pending JPS62183255A (en) | 1986-02-06 | 1986-02-06 | Original reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62183255A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499108A (en) * | 1992-07-29 | 1996-03-12 | Visioneer Communications, Inc. | Document-driven scanning input device communicating with a computer |
| US5517332A (en) * | 1993-10-25 | 1996-05-14 | Barry; Michael R. | Document scanner having one-piece housing for holding an image sensor, drive roller and document sensors in close alignment with each other |
| JP2006203840A (en) * | 2004-12-20 | 2006-08-03 | Graphtec Corp | Image reading apparatus |
| JP2006313995A (en) * | 2005-05-09 | 2006-11-16 | Graphtec Corp | Image reading apparatus |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927664B2 (en) * | 1980-08-01 | 1984-07-07 | 本田技研工業株式会社 | press equipment |
-
1986
- 1986-02-06 JP JP61024379A patent/JPS62183255A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5927664B2 (en) * | 1980-08-01 | 1984-07-07 | 本田技研工業株式会社 | press equipment |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5499108A (en) * | 1992-07-29 | 1996-03-12 | Visioneer Communications, Inc. | Document-driven scanning input device communicating with a computer |
| US5517332A (en) * | 1993-10-25 | 1996-05-14 | Barry; Michael R. | Document scanner having one-piece housing for holding an image sensor, drive roller and document sensors in close alignment with each other |
| JP2006203840A (en) * | 2004-12-20 | 2006-08-03 | Graphtec Corp | Image reading apparatus |
| JP2006313995A (en) * | 2005-05-09 | 2006-11-16 | Graphtec Corp | Image reading apparatus |
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