JPH01160768U - - Google Patents
Info
- Publication number
- JPH01160768U JPH01160768U JP5689688U JP5689688U JPH01160768U JP H01160768 U JPH01160768 U JP H01160768U JP 5689688 U JP5689688 U JP 5689688U JP 5689688 U JP5689688 U JP 5689688U JP H01160768 U JPH01160768 U JP H01160768U
- Authority
- JP
- Japan
- Prior art keywords
- reference color
- light
- optical lens
- line sensor
- light source
- 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
Landscapes
- Image Input (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
第１図は本考案の一実施例を示す回路ブロツク
図、第２図は本考案の他の実施例を示す回路ブロ
ツク図である。
１……原稿載せ台、２……原稿、３……第１の
基準色白、４……第２の基準色白、５……光源、
６……セルフオツクレンズアレイ、７……ライン
センサ、１０……出力最大画素検出回路、１５…
…比較回路、１６……光量調整回路。
FIG. 1 is a circuit block diagram showing one embodiment of the present invention, and FIG. 2 is a circuit block diagram showing another embodiment of the present invention. 1... Original plate, 2... Original, 3... First reference color white, 4... Second reference color white, 5... Light source,
6... Self-cleaning lens array, 7... Line sensor, 10... Output maximum pixel detection circuit, 15...
...Comparison circuit, 16...Light amount adjustment circuit.
Claims (1)
を光学レンズを介して多数の感光素子を１列に並
べてなるラインセンサに結像して基準色データを
得、その基準色データに基いて前記ラインセンサ
の各感光素子の出力レベル補正を行ない、その後
前記光源から原稿に光を照射し、その反射光を前
記光学レンズを介して前記ラインセンサに結像し
て画像読取りを行なう画像読取り装置において、
前記原稿を前記光学レンズの焦点位置に対置させ
るとともに前記基準色を前記光学レンズの焦点位
置よりずらした位置に対置させる手段を設けたこ
とを特徴とする画像読取り装置。 (2) 光源から基準色に光を照射し、その反射光
を光学レンズを介して多数の感光素子を１列に並
べてなるラインセンサに結像して基準色データを
得、その基準色データに基いて前記ラインセンサ
の各感光素子の出力レベル補正を行ない、その後
前記光源から原稿に光を照射し、その反射光を前
記光学レンズを介して前記ラインセンサに結像し
て画像読取りを行なう画像読取り装置において、
前記原稿及び第１の基準色を前記光学レンズの焦
点位置に対置させるとともに第２の基準色を前記
光学レンズの焦点位置よりずらした位置に対置さ
せる手段と、前記第１の基準色を読取つて得られ
る前記ラインセンサ出力に前記第２の基準色を読
取つて得られる前記ラインセンサ出力が一致する
ように前記光源の光量を自動調整する光量調整回
路を設けたことを特徴とする画像読取り装置。[Claims for Utility Model Registration] (1) Light is irradiated from a light source onto a reference color, and the reflected light is imaged through an optical lens onto a line sensor consisting of a large number of photosensitive elements arranged in a row to generate reference color data. The output level of each photosensitive element of the line sensor is corrected based on the reference color data, and then light is irradiated from the light source to the document, and the reflected light is directed to the line sensor via the optical lens. In an image reading device that reads an image by
An image reading device characterized by comprising means for placing the document opposite to the focal position of the optical lens and placing the reference color at a position shifted from the focal position of the optical lens. (2) Light is irradiated from a light source onto a reference color, and the reflected light is imaged through an optical lens onto a line sensor consisting of a number of photosensitive elements arranged in a row to obtain reference color data. Based on this, the output level of each photosensitive element of the line sensor is corrected, and then light is irradiated from the light source to the document, and the reflected light is imaged on the line sensor via the optical lens to read the image. In the reading device,
means for placing the original and a first reference color opposite to the focal position of the optical lens and positioning a second reference color at a position shifted from the focal position of the optical lens; and a means for reading the first reference color. An image reading device comprising a light amount adjustment circuit that automatically adjusts the light amount of the light source so that the line sensor output obtained by reading the second reference color matches the line sensor output obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5689688U JPH01160768U (en) | 1988-04-27 | 1988-04-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5689688U JPH01160768U (en) | 1988-04-27 | 1988-04-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01160768U true JPH01160768U (en) | 1989-11-08 |
Family
ID=31282755
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5689688U Pending JPH01160768U (en) | 1988-04-27 | 1988-04-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01160768U (en) |
-
1988
- 1988-04-27 JP JP5689688U patent/JPH01160768U/ja active Pending
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