Harness, Dickey & Pierce, P.L.C.
Image forming apparatus having an optical sensor for converting a toner adhesion amount and image forming method
An image forming apparatus includes an image bearer to bear a black toner pattern formed with a black toner image under an increased exposure amount and an increased developing bias. A first optical sensor detects an amount of reflection light reflected by the black toner pattern on the image bearer. The first optical sensor includes a light-emitting element to emit light toward the black toner pattern on the image bearer and a light-receiving element to receive the reflection light reflected by the black toner pattern on the image bearer. A toner adhesion amount converter converts the amount of the reflection light detected by the first optical sensor into a toner adhesion amount of toner adhered to the image bearer and adjusts an image density according to the toner adhesion amount.
RICOH COMPANY, LTD.
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Yuuichiroh Keita Akira Shinichi Tetsuya
Uematsu Gotoh Yoshida Akatsu Muto