Light beam emission apparatus and image forming apparatus including light beam emission apparatus
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United States of America Patent
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Jan 6, 2015
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app pub date -
Jun 13, 2012
filing date -
Jun 17, 2011
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Abstract
A light beam emission apparatus separates, via a half mirror, apart of a laser beam emitted from a semiconductor laser towards a photosensitive member, guides the separated laser beam to an optical sensor to detect a light quantity, and controls the light quantity based on the detected result. The light beam emission apparatus includes a first light blocking member located between the semiconductor laser and the half mirror, and a second light blocking member located between the half mirror and the optical sensor.
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