Image reading apparatus

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United States of America Patent

PATENT NO 9894232
SERIAL NO

15357062

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Abstract

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An image reading apparatus includes a light emitting element, a luminance calculating unit, a light amount setting unit, and a storing unit. The light amount setting unit, in each line period, causes the light emitting element to emit a light with gradually changing a reference light amount from a reference light amount set as a default value from among a plurality of reference light amounts stored in the storing unit, identifies a reference light amount so that the luminance calculated by the luminance calculating unit is within a predetermined range, sets the identified reference light amount as a default value for the next line period, and causes the storing unit to store that reference light amount.

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Patent Owner(s)

  • RISO KAGAKU CORPORATION

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Shiokawa, Mitsuharu Ibaraki, JP 3 2

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