JPS6335373U - - Google Patents

Info

Publication number
JPS6335373U
JPS6335373U JP12858386U JP12858386U JPS6335373U JP S6335373 U JPS6335373 U JP S6335373U JP 12858386 U JP12858386 U JP 12858386U JP 12858386 U JP12858386 U JP 12858386U JP S6335373 U JPS6335373 U JP S6335373U
Authority
JP
Japan
Prior art keywords
reference plate
white reference
image
converter
converting
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
Application number
JP12858386U
Other languages
English (en)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP12858386U priority Critical patent/JPS6335373U/ja
Publication of JPS6335373U publication Critical patent/JPS6335373U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Facsimile Image Signal Circuits (AREA)

Description

【図面の簡単な説明】
第１図は本考案の構成を示すブロツク図、第２
図は本考案の実施例を示すブロツク図である。 １：Ａ／Ｄコンバータ、２：コンパレータ、３
：基準値発生回路（カウンタ）、４：Ｄ／Ａコン
バータ、５：平均値回路、６：制御回路、Ｖａ：
画像信号、Ｖｒ：基準電圧、Ｖｉｎ：初期値。

Claims (1)

    【実用新案登録請求の範囲】
  1. イメージセンサの副走査方向に沿う原稿読取範
    囲外に白色基準板を設けると共に、１主走査毎に
    、この白色基準板に対応する画像信号のＡ／Ｄ変
    換出力を所定値と比較し、その比較結果に基づい
    た数値をＤ／Ａ変換して前記Ａ／Ｄ変換器の基準
    電圧として与える手段を備えたことを特徴とする
    画像読取装置。
JP12858386U 1986-08-22 1986-08-22 Pending JPS6335373U (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12858386U JPS6335373U (ja) 1986-08-22 1986-08-22

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12858386U JPS6335373U (ja) 1986-08-22 1986-08-22

Publications (1)

Publication Number Publication Date
JPS6335373U true JPS6335373U (ja) 1988-03-07

Family

ID=31024387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12858386U Pending JPS6335373U (ja) 1986-08-22 1986-08-22

Country Status (1)

Country Link
JP (1) JPS6335373U (ja)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6195179B1 (en) 1997-07-02 2001-02-27 Brother Kogyo Kabushiki Kaisha Image reading device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6195179B1 (en) 1997-07-02 2001-02-27 Brother Kogyo Kabushiki Kaisha Image reading device

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