Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Multibeam image forming
A first beam splitter splits each laser beam into a first beam and a second beam. A deflecting unit deflects a direction of the second beam. A second beam splitter splits the second beam into multiple split beams. A first photoelectric converting unit measures intensity of the first beam and outputs first voltage. A second photoelectric converting unit measures intensity of each split beam and outputs second voltage. A control unit updates a driving-current correction value using the first voltage and the second voltage, corrects a driving current, and controls intensity of the laser beam based on corrected driving current.
Ricoh Company, Limited
H B G H G G
H04N B41J G03G H04N G03G G02B
inventional inventional inventional inventional additional inventional
Hidetoshi
Yamashita