Fitzpatrick, Cella, Harper & Scinto
Recording position adjuster
 A recording position defining apparatus includes a beam generator for generating a modulated beam in accordance with a signal to be recorded; a beam deflector; a beam detector fixed at a predetermined position; a clock signal generator for generating clock signals of a predetermined frequency; and a record signal applicator for applying a record signal to the beam generator upon detection of a predetermined number of clock signals after the beam is detected by the beam detector. 
Canon Kabushiki Kaisha
B G B G G G B
B41J G06K B41B G06K G06K G06F B41B
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Kazuhiro Asao Katsumi Yasushi Takashi Taisuke Takashi
Hirayama Watanabe Masaki Sato Kitamura Tokiwa Nakano