发明名称 Image reading apparatus
摘要 An image reading apparatus irradiates a document with light, and reads the document image based on the reflected light and includes a light source which includes a plurality of LEDs, and irradiates the document with light. The apparatus also includes an LED current adjusting unit which sets the amount of current to be supplied to each LED by changing the current amounts from the end portion to the central portion in the main scanning direction of document reading, and a driving circuit which drives the LEDs by the current amounts set by the LED current adjusting unit in correspondence with the LEDs.
申请公布号 US8638480(B2) 申请公布日期 2014.01.28
申请号 US20100878182 申请日期 2010.09.09
申请人 MORIKAWA DAISUKE;CANON KABUSHIKI KAISHA 发明人 MORIKAWA DAISUKE
分类号 H04N1/46;H03F3/08;H04N1/04 主分类号 H04N1/46
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