JP2015192228A5 - - Google Patents

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JP2015192228A5
JP2015192228A5 JP2014066805A JP2014066805A JP2015192228A5 JP 2015192228 A5 JP2015192228 A5 JP 2015192228A5 JP 2014066805 A JP2014066805 A JP 2014066805A JP 2014066805 A JP2014066805 A JP 2014066805A JP 2015192228 A5 JP2015192228 A5 JP 2015192228A5
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JP
Japan
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light sources
ratio
luminance value
light source
illumination unit
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JP2014066805A
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JP2015192228A (ja
JP6457722B2 (ja
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Claims (2)

  1. 前記調整手段は、前記比率rRと、前記比率rGと、前記比率rBとのうちで最小の比率に、前記比率rR、前記比率rGおよび前記比率rBが一致するように、前記第1照明手段のR光源、G光源およびB光源および前記第2照明手段のR光源、G光源およびB光源の点灯時間の少なくとも1つを調整することを特徴とする請求項1に記載の読取装置
  2. 前記第1照明手段および前記第2照明手段のそれぞれは、複数のR光源、複数のG光源および複数のB光源を有し、
    前記調整手段は、
    前記第1照明手段に含まれている複数の光源について取得された複数の輝度値のうちで最小の輝度値を決定し、当該第1照明手段に含まれているすべての光源の輝度値が当該最小の輝度値に一致するように、当該最小の輝度値に対応した光源とは異なる他の複数の光源の点灯時間を調整し、前記第2照明手段に含まれている複数の光源について取得された複数の輝度値のうちで最小の輝度値を決定し、当該第2照明手段に含まれているすべての光源の輝度値が当該最小の輝度値に一致するように、当該最小の輝度値に対応した光源とは異なる他の複数の光源の点灯時間を調整することで、前記複数の光源含まれている複数のR色の光源間の輝度値の比率rRと、前記複数の光源含まれている複数のG色の光源間の輝度値の比率rGと、前記複数の光源含まれている複数のB色の光源間の輝度値の比率rBとを所定の比率に一致させることを特徴とする請求項1ないし3のいずれか1項に記載の読取装置。
JP2014066805A 2014-03-27 2014-03-27 読取装置及びその制御方法 Active JP6457722B2 (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2014066805A JP6457722B2 (ja) 2014-03-27 2014-03-27 読取装置及びその制御方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2014066805A JP6457722B2 (ja) 2014-03-27 2014-03-27 読取装置及びその制御方法

Publications (3)

Publication Number Publication Date
JP2015192228A JP2015192228A (ja) 2015-11-02
JP2015192228A5 true JP2015192228A5 (ja) 2017-04-20
JP6457722B2 JP6457722B2 (ja) 2019-01-23

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JP2014066805A Active JP6457722B2 (ja) 2014-03-27 2014-03-27 読取装置及びその制御方法

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JP (1) JP6457722B2 (ja)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4417670B2 (ja) * 2003-07-29 2010-02-17 ニスカ株式会社 画像読取装置及び画像読取方法
US8482824B2 (en) * 2009-03-30 2013-07-09 Brother Kogyo Kabushiki Kaisha Image reading apparatus

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JP2015192228A5 (ja)