JPS6061861U - image reader - Google Patents
image readerInfo
- Publication number
- JPS6061861U JPS6061861U JP15366683U JP15366683U JPS6061861U JP S6061861 U JPS6061861 U JP S6061861U JP 15366683 U JP15366683 U JP 15366683U JP 15366683 U JP15366683 U JP 15366683U JP S6061861 U JPS6061861 U JP S6061861U
- Authority
- JP
- Japan
- Prior art keywords
- white level
- document
- reference color
- image reading
- 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.)
- Pending
Links
Landscapes
- Image Input (AREA)
- Facsimile Heads (AREA)
- Facsimile Image Signal Circuits (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第１図および第２図は従来のイメージ読取り装置におけ
る白レベルホロワ回路の基準値の設定動作を示す説明図
、第３図ないし第５図は本考案の一実施例を示す図で、
第３図は原稿台を読取り側より見た図、第４図は要部の
断面側面図、第５図は本考案のイメージ読取り装置の読
取り開始時における白レベルホロワ回路の基準値の設定
動作を示す説明図である。
図中、１は原稿、２は読取りパターン、３は原稿台、４
は装置筐体、５は天板ガラス、６は原稿台の前端縁、８
はシート、１２，１３．１４は反射鏡、１６は結像レン
ズ、１７はイメージセンサ、Ｅ、 ｅは読取り開始時の
時間遅れ、Ａ、 ａはイメージセンサのビット出力め
変化、Ｂ、ｂは白レベルホロワ回路の基準値の変化、Ｗ
は基準色領域である。1 and 2 are explanatory diagrams showing the reference value setting operation of a white level follower circuit in a conventional image reading device, and FIGS. 3 to 5 are diagrams showing an embodiment of the present invention.
Fig. 3 is a view of the document table as seen from the reading side, Fig. 4 is a cross-sectional side view of the main parts, and Fig. 5 shows the setting operation of the reference value of the white level follower circuit at the start of reading in the image reading device of the present invention. FIG. In the figure, 1 is the original, 2 is the reading pattern, 3 is the original table, and 4
is the device housing, 5 is the top glass, 6 is the front edge of the document table, 8 is the
are sheets, 12, 13, and 14 are reflectors, 16 is an imaging lens, 17 is an image sensor, E and e are time delays at the start of reading, A and a are changes in bit output of the image sensor, B and b are Change in reference value of white level follower circuit, W
is the reference color area.
Claims (2)
次変更しながら原稿台上に置かれた原稿の文字ないし図
形パターンをＴＶスキャン方式により読取るイメージ読
取り装置において、原稿台の副走査方向前端縁の原稿読
取り領域より前方に所定幅の基準色領域を設け、原稿読
取り前にこの基準用領域を読取らせることにより白レベ
ルホロワ回路の白レベルの初期値を設定させることを特
徴とする、イメージ読取り装置。(1) In an image reading device that uses a TV scan method to read character or graphic patterns on a document placed on a document table while sequentially changing the reference value of the white level using a white level follower circuit, the front edge of the document table in the sub-scanning direction is An image reading device characterized in that a reference color area of a predetermined width is provided in front of a document reading area, and an initial value of the white level of a white level follower circuit is set by reading this reference color area before reading the document. .
である、実用新案登録請求の範囲第１項記載のイメージ
読取り装置。(2) The image reading device according to claim 1, wherein the reference color area is a gray area with a reflectance of 60%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15366683U JPS6061861U (en) | 1983-10-03 | 1983-10-03 | image reader |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15366683U JPS6061861U (en) | 1983-10-03 | 1983-10-03 | image reader |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6061861U true JPS6061861U (en) | 1985-04-30 |
Family
ID=30339910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15366683U Pending JPS6061861U (en) | 1983-10-03 | 1983-10-03 | image reader |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6061861U (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104362A (en) * | 1980-12-19 | 1982-06-29 | Fujitsu Ltd | Photoelectric converter |
| JPS57161981A (en) * | 1981-03-31 | 1982-10-05 | Fujitsu Ltd | White level follower circuit |
| JPS57161931A (en) * | 1981-03-30 | 1982-10-05 | Fujitsu Ltd | Method for data base generation |
| JPS57210774A (en) * | 1981-06-19 | 1982-12-24 | Fujitsu Ltd | White level follower circuit |
| JPS5823793A (en) * | 1982-01-26 | 1983-02-12 | Hayashibara Biochem Lab Inc | Production of human t-cell growth factor (htcgf) |
-
1983
- 1983-10-03 JP JP15366683U patent/JPS6061861U/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57104362A (en) * | 1980-12-19 | 1982-06-29 | Fujitsu Ltd | Photoelectric converter |
| JPS57161931A (en) * | 1981-03-30 | 1982-10-05 | Fujitsu Ltd | Method for data base generation |
| JPS57161981A (en) * | 1981-03-31 | 1982-10-05 | Fujitsu Ltd | White level follower circuit |
| JPS57210774A (en) * | 1981-06-19 | 1982-12-24 | Fujitsu Ltd | White level follower circuit |
| JPS5823793A (en) * | 1982-01-26 | 1983-02-12 | Hayashibara Biochem Lab Inc | Production of human t-cell growth factor (htcgf) |
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