JPH0268565U - - Google Patents
Info
- Publication number
- JPH0268565U JPH0268565U JP14716388U JP14716388U JPH0268565U JP H0268565 U JPH0268565 U JP H0268565U JP 14716388 U JP14716388 U JP 14716388U JP 14716388 U JP14716388 U JP 14716388U JP H0268565 U JPH0268565 U JP H0268565U
- Authority
- JP
- Japan
- Prior art keywords
- white
- photoelectric conversion
- conversion element
- element array
- platen 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
- 238000006243 chemical reaction Methods 0.000 claims description 4
- 238000010586 diagram Methods 0.000 description 2
- 238000003705 background correction Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
Landscapes
- Facsimile Scanning Arrangements (AREA)
- Facsimile Image Signal Circuits (AREA)
Description
第１図はこの考案の一実施例を示す光電変換素
子列に垂直な方向の断面図、第２図は同上のもの
の側面図、第３図はシエーデイング補正回路のブ
ロツク図、第４図は別の実施例を示す第１図と同
様な図面。
１……センサー部、２……コンタクトガラス、
３……筐体、４……光電変換素子列、５……等倍
結像素子、６……光源、７……原稿、８……プラ
テンローラ、９ａ……小径部分。
Fig. 1 is a cross-sectional view in the direction perpendicular to the photoelectric conversion element array showing an embodiment of this invention, Fig. 2 is a side view of the same as above, Fig. 3 is a block diagram of the shading correction circuit, and Fig. 4 is a separate diagram. FIG. 2 is a drawing similar to FIG. 1 showing an embodiment of the invention. 1...Sensor part, 2...Contact glass,
3... Housing, 4... Photoelectric conversion element array, 5... Same-magnification imaging element, 6... Light source, 7... Document, 8... Platen roller, 9a... Small diameter portion.
Claims (1)
ンローラの白色表面を読み取つて白色基準信号を
出力するとともに、この信号をメモリに貯蔵し、
前記光電変換素子列により原稿を読み取つたとき
の出力の不均一性をメモリに貯蔵された前記白色
基準信号によつて補正するようになつている原稿
読み取り装置において、前記プラテンローラがそ
の軸線方向の複数の部分において、外径が小さく
、それらの部分の表面が実質的に白色となつてい
ることを特徴とする原稿読み取り装置。 When there is no document, the photoelectric conversion element array reads the white surface of the platen roller and outputs a white reference signal, and stores this signal in memory.
In the original reading device, the non-uniformity of the output when the original is read by the photoelectric conversion element array is corrected by the white reference signal stored in a memory, in which the platen roller is fixed in the axial direction. A document reading device characterized in that a plurality of parts have a small outer diameter and the surfaces of these parts are substantially white.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14716388U JPH0268565U (en) | 1988-11-11 | 1988-11-11 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14716388U JPH0268565U (en) | 1988-11-11 | 1988-11-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0268565U true JPH0268565U (en) | 1990-05-24 |
Family
ID=31417317
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14716388U Pending JPH0268565U (en) | 1988-11-11 | 1988-11-11 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0268565U (en) |
-
1988
- 1988-11-11 JP JP14716388U patent/JPH0268565U/ja active Pending