JPH032774U - - Google Patents
Info
- Publication number
- JPH032774U JPH032774U JP6173689U JP6173689U JPH032774U JP H032774 U JPH032774 U JP H032774U JP 6173689 U JP6173689 U JP 6173689U JP 6173689 U JP6173689 U JP 6173689U JP H032774 U JPH032774 U JP H032774U
- Authority
- JP
- Japan
- Prior art keywords
- document
- image
- conveyance path
- image sensor
- roller
- 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
- 238000007688 edging Methods 0.000 claims 1
- 238000000034 method Methods 0.000 claims 1
- 230000002093 peripheral effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 238000003705 background correction Methods 0.000 description 1
Landscapes
- Facsimiles In General (AREA)
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
- Character Input (AREA)
- Image Input (AREA)
Description
第１図は本考案の一実施例を示す縦断側面図、
第２図ないし第６図は従来例を示すもので、第２
図は縦断側面図、第３図は基準色面の読取時の出
力検出感度の変化を示すグラフ、第４図はその出
力検出感度の変化とスライスレベルとの間係を示
すグラフ、第５図は基準白色面自体の反射率の変
化による出力の変化を示すグラフ、第６図は誤つ
たシエーデイング補正後の原稿読取出力を示すグ
ラフ、第７図は他の従来例を示す縦断側面図であ
る。
１……原稿搬送路、４……原稿、５……原稿搬
送部、１２……イメージセンサ、１６……基準白
色面、１７……シエーデイングローラ。
FIG. 1 is a vertical side view showing an embodiment of the present invention;
Figures 2 to 6 show conventional examples.
The figure is a longitudinal side view, Figure 3 is a graph showing the change in output detection sensitivity when reading the reference color plane, Figure 4 is a graph showing the relationship between the change in output detection sensitivity and the slice level, and Figure 5 is a graph showing the relationship between the change in output detection sensitivity and the slice level. is a graph showing changes in output due to changes in reflectance of the reference white surface itself, FIG. 6 is a graph showing document reading output after erroneous shading correction, and FIG. 7 is a longitudinal side view showing another conventional example. . DESCRIPTION OF SYMBOLS 1... Original transport path, 4... Original, 5... Original transport section, 12... Image sensor, 16... Reference white surface, 17... Shading roller.
Claims (1)
原稿を照明するとともにこの原稿からの反射光を
イメージセンサに結像する原稿移動型イメージス
キヤナにおいて、前記原稿搬送路中の前記原稿を
支えるシエーデイングローラを前記イメージセン
サに対向させて回転自在に設け、このシエーデイ
ングローラの外周面の一部にシエーデイングロー
ラ補正用の基準白色面を形成したことを特徴とす
る原稿移動型イメージスキヤナ。 In a moving document image scanner that illuminates the document during the process of conveying the document along the document conveyance path and forms an image of reflected light from the document on an image sensor, a system that supports the document in the document conveyance path is provided. A document moving type image, characterized in that an edging roller is rotatably provided opposite to the image sensor, and a reference white surface for shading roller correction is formed on a part of the outer peripheral surface of the shading roller. Sukyana.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6173689U JPH032774U (en) | 1989-05-26 | 1989-05-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6173689U JPH032774U (en) | 1989-05-26 | 1989-05-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH032774U true JPH032774U (en) | 1991-01-11 |
Family
ID=31590248
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP6173689U Pending JPH032774U (en) | 1989-05-26 | 1989-05-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH032774U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5348744U (en) * | 1976-09-27 | 1978-04-25 |
-
1989
- 1989-05-26 JP JP6173689U patent/JPH032774U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5348744U (en) * | 1976-09-27 | 1978-04-25 |