JPS6387943U - - Google Patents
Info
- Publication number
- JPS6387943U JPS6387943U JP18308186U JP18308186U JPS6387943U JP S6387943 U JPS6387943 U JP S6387943U JP 18308186 U JP18308186 U JP 18308186U JP 18308186 U JP18308186 U JP 18308186U JP S6387943 U JPS6387943 U JP S6387943U
- Authority
- JP
- Japan
- Prior art keywords
- document
- light
- optical
- light source
- illumination light
- 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
- 230000003287 optical effect Effects 0.000 claims description 10
- 238000005286 illumination Methods 0.000 claims 4
- 230000037431 insertion Effects 0.000 claims 2
- 238000003780 insertion Methods 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 5
- 238000000926 separation method Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 1
Landscapes
- Facsimiles In General (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
従来例を示す図、第３図ａは同実施例において原
稿読取位置に配置するパタン印刷部材のパターン
の例示図、第３図ｂは原稿が挿入されているとき
の光学読取センサの出力波形図、第３図ｃは原稿
が挿入されていないときの光学読取センサの出力
波形図、第４図は同実施例の動作のフローチヤー
ト、第５図は本考案の他の実施例を示す図である
。
１…原稿、２…ローラー、３…角ローラー、４
…分離片、５…分離ローラー、６…給紙ローラー
、７…給紙ローラー、８…排紙ローラー、９…排
紙ローラー、１０…螢光灯、１１…螢光灯カバー
、１２…ミラー、１３…レンズ、１４…光学読取
センサ、１５…増幅器、１６…２値化回路、１７
…ＣＰＵ、１８…増幅器、１９…マイクロスイツ
チ、２０…反射形センサ、２１…光ガイド、２２
…ハーフミラー、２３…パタン印刷部材、２４…
パタン検出回路、２５…ミラー、２６…ミラー。
FIG. 1 is a diagram showing an embodiment of the present invention, FIG. 2 is a diagram showing a conventional example, FIG. Figure b is a diagram of the output waveform of the optical reading sensor when a document is inserted, Figure 3c is a diagram of the output waveform of the optical reading sensor when no document is inserted, and Figure 4 shows the operation of the same embodiment. The flowchart, FIG. 5, is a diagram showing another embodiment of the present invention. 1... Original, 2... Roller, 3... Square roller, 4
... separation piece, 5 ... separation roller, 6 ... paper feed roller, 7 ... paper feed roller, 8 ... paper discharge roller, 9 ... paper discharge roller, 10 ... fluorescent light, 11 ... fluorescent light cover, 12 ... mirror, 13... Lens, 14... Optical reading sensor, 15... Amplifier, 16... Binarization circuit, 17
...CPU, 18...Amplifier, 19...Micro switch, 20...Reflection type sensor, 21...Light guide, 22
...Half mirror, 23...Pattern printing member, 24...
Pattern detection circuit, 25...mirror, 26...mirror.
Claims (1)
を通つて搬送し、原稿読取位置にて照明光源で照
射された原稿からの反射光を光学読取センサに導
くようにした画像読取装置において、原稿搬送路
に対して照明光源とは反対側に、原稿搬送方向と
は直角方向に配列された複数のパターンを有する
パターン部材を原稿読取位置に配置すると共に、
原稿読取位置に近い原稿搬送方向下流側位置から
照明光源の光を取り入れ、これを原稿挿入口へ導
く光ガイドを配置し、該光ガイドから出た光を前
記光学読取センサに導く光学系を設け、原稿非挿
入時に上記光ガイドを通つて、上記光学読取セン
サに導かれる光は、照明光源で照射される上記パ
ターン部材からの上記光学読取センサに到る反射
光に含まれる上記複数のパターンに相当する光信
号のうちの若干個のパターンに相当する光信号を
、マスクするようになつていることを特徴とする
画像読取装置。 In an image reading device, a document inserted through a document insertion slot is conveyed through a document reading position, and reflected light from the document illuminated by an illumination light source is guided to an optical reading sensor at the document reading position. A pattern member having a plurality of patterns arranged in a direction perpendicular to the document conveyance direction is disposed at a document reading position on the opposite side of the illumination light source with respect to the path, and
A light guide is provided that takes in light from an illumination light source from a downstream position in the document transport direction near the document reading position and guides the light to the document insertion slot, and an optical system is provided that guides the light emitted from the light guide to the optical reading sensor. When no original is inserted, the light guided to the optical reading sensor through the light guide is reflected by the plurality of patterns included in the reflected light reaching the optical reading sensor from the pattern member irradiated by the illumination light source. An image reading device characterized in that optical signals corresponding to some patterns among corresponding optical signals are masked.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18308186U JPS6387943U (en) | 1986-11-28 | 1986-11-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18308186U JPS6387943U (en) | 1986-11-28 | 1986-11-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6387943U true JPS6387943U (en) | 1988-06-08 |
Family
ID=31129484
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18308186U Pending JPS6387943U (en) | 1986-11-28 | 1986-11-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6387943U (en) |
-
1986
- 1986-11-28 JP JP18308186U patent/JPS6387943U/ja active Pending
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