JPS63113368U - - Google Patents
Info
- Publication number
- JPS63113368U JPS63113368U JP281887U JP281887U JPS63113368U JP S63113368 U JPS63113368 U JP S63113368U JP 281887 U JP281887 U JP 281887U JP 281887 U JP281887 U JP 281887U JP S63113368 U JPS63113368 U JP S63113368U
- Authority
- JP
- Japan
- Prior art keywords
- white
- image reading
- document
- reflective surface
- reading device
- 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.)
- Granted
Links
- 230000003287 optical effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 9
- 238000006243 chemical reaction Methods 0.000 description 1
Landscapes
- Facsimile Scanning Arrangements (AREA)
Description
第1図は本考案の一実施例における一具体例の
構成図、第2図は第1図の一具体例における発光
ダイオードの照度分布図、第3図は第1図の一具
体例における白レベル信号の出力波形図、第4図
は本考案の一実施例における他の具体例の構成図
、第5図は従来の画像読取装置に取り付ける発光
ダイオードの照度分布図、第6図は従来の画像読
取装置における画像読取部の構成図、第7図及び
第8図は従来の画像読取装置における白レベル信
号の出力波形図である。
1……発光ダイオード、2……白テープ、3…
…原稿、4……光電変換素子、P1……白テープ
2の反射面、P2……原稿3の表面、P0……中
点。
FIG. 1 is a block diagram of a specific example of an embodiment of the present invention, FIG. 2 is an illuminance distribution diagram of a light emitting diode in the specific example of FIG. 1, and FIG. 3 is a white light distribution diagram of a specific example of FIG. Figure 4 is a diagram of the output waveform of the level signal, Figure 4 is a configuration diagram of another specific example of one embodiment of the present invention, Figure 5 is an illuminance distribution diagram of a light emitting diode attached to a conventional image reading device, and Figure 6 is a diagram of the conventional image reading device. A configuration diagram of an image reading section in an image reading device, and FIGS. 7 and 8 are output waveform diagrams of a white level signal in a conventional image reading device. 1...Light emitting diode, 2...White tape, 3...
... Original, 4... Photoelectric conversion element, P 1 ... Reflective surface of white tape 2, P 2 ... Surface of original 3, P 0 ... Midpoint.
Claims (1)
された光源の光の照度を基準にして原稿の表面の
白レベルを補正する画像読取装置において、照射
領域の狭い光源を、その光軸が走査線上の前記白
テープの反射面と前記原稿の表面との中点を通過
するように取り付けて、前記白テープの反射面と
前記原稿の表面との照度を等しくしたことを特徴
とする画像読取装置。 In an image reading device that corrects the white level on the surface of a document based on the illuminance of the light from the light source reflected on the reflective surface of the white tape for white level setting standards, the optical axis scans the light source with a narrow irradiation area. An image reading device characterized in that the white tape is attached so as to pass through a midpoint between the reflective surface of the white tape and the surface of the document on a line, so that illuminance between the reflective surface of the white tape and the surface of the document is equalized. .
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP281887U JPH067615Y2 (en) | 1987-01-14 | 1987-01-14 | Image reader |
US07/143,664 US4806775A (en) | 1987-01-14 | 1988-01-14 | Image reading system using an LED array |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP281887U JPH067615Y2 (en) | 1987-01-14 | 1987-01-14 | Image reader |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS63113368U true JPS63113368U (en) | 1988-07-21 |
JPH067615Y2 JPH067615Y2 (en) | 1994-02-23 |
Family
ID=30782012
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP281887U Expired - Lifetime JPH067615Y2 (en) | 1987-01-14 | 1987-01-14 | Image reader |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH067615Y2 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012217150A (en) * | 2011-03-29 | 2012-11-08 | Brother Ind Ltd | Image reader and manufacturing method therefor |
-
1987
- 1987-01-14 JP JP281887U patent/JPH067615Y2/en not_active Expired - Lifetime
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2012217150A (en) * | 2011-03-29 | 2012-11-08 | Brother Ind Ltd | Image reader and manufacturing method therefor |
US8643914B2 (en) | 2011-03-29 | 2014-02-04 | Brother Kogyo Kabushiki Kaisha | Image-reading device and manufacturing method thereof |
Also Published As
Publication number | Publication date |
---|---|
JPH067615Y2 (en) | 1994-02-23 |