Hitachi Koki Co., Ltd.

Kazuo Takano

Isao Nakajima

Yasuyuki Tsuji

Hiroshi Ueno

Tsukasa Onose

Kunitomo Takahashi

Youji Hirose

Koji Doi

Isao Watanabe

Shuuho Yokokawa

Satoshi Aita

Syou Sawahata

Takehiro Honda

An electrophotographic apparatus system or an electrophotographic apparatus provided according to the present invention has the discrepancy of printing speed between tandem and single printing removed. The electrophotographic apparatus system or the electrophotographic apparatus is provided with printing speed changeover means 23a, 23b, 24 not only to select a printing speed applicable for the case where printing is effected with a plurality of electrophotographic apparatus A, B operatively linked together and another printing speed serviceable for the case where printing is implemented with each of plural electrophotographic apparatus put into separate run independently of one another, but also to shift the printing speeds from one to another, whereby the electrophotographic apparatus system or the electrophotographic apparatus may provide normal performance in each of the respective formations of printing.

Electrophotographic printing system including a plurality of

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Ibaraki, Japan

Kazuo Takano