Mitsubishi Jukogyo Kabushiki Kaisha

Ryomei Engineering Co., Ltd.

Masataka Hirota

Hiromitsu Soeda

Akikazu Seo

Takafumi Nakano

The known keyless printing press including an ink feeder section consisting of an ink source roller, a transfer roller, a doctor roller, an anti-hysteresis doctor disposed on the circumferential surface of the doctor roller and the like, and also provided with a wetting device for a plate drum, is improved in order to realize a fresh condition of the ink source roller which is free from residual ink before printing ink having a uniform moisture content is applied thereto. The improvements reside in that a refresh doctor is disposed on the ink source roller at a position downstream of the nip between the ink source roller and the transfer roller for scraping residual ink from the circumferential surface of the ink source roller.

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Hiroshima, Japan

Masataka Hirota