Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
Image forming apparatus and image-density control method
An image forming apparatus forms a plurality of tone patterns of different colors, each of which containing a plurality of toner patches having different toner densities. Some of the toner patches in each of the tone patterns are formed with a predetermined fixed developing bias and the rest of the toner patches in each of the tone patterns are formed with developing biases set based on previous developing biases that have been obtained through a previous control process. The largest toner density of the toner patches in each of the tone patterns is determined based on a magnitude relation of previous index values obtained through the previous control process.
Ricoh Company, Limited
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additional additional inventional inventional
Nobutaka Shuji Tetsuya Akira Kayoko Shin Hitoshi Yushi Yoshiaki Kohta
Takeuchi Hirai Muto Yoshida Tanaka Hasegawa Ishibashi Hirayama Miyashita Fujimori