Fujifilm Corporation

Kikuo Matsuba

Yoshinori Kawamura

Yoshihiro Koyanagi

Kazuoki Komiyama

Toru Itakura

In a planographic printing plate feeding apparatus, a load W applied to a stack of plates by a pickup roller which feeds a planographic printing plate from the stack is adjusted. If the load W is increased and exceeds a single feeding threshold, and if a conveyance force Fapplied from the uppermost planographic printing plate to the slip-sheet is increased by such a degree that the conveyance force Fexceeds a maximum static friction force F' between the slip-sheet and the planographic printing plate under the slip-sheet, the uppermost planographic printing plate and the slip-sheetcan be conveyed integrally (set feeding). Hence, it is possible to obtain a planographic printing plate feeding apparatus with a compact, simple and inexpensive structure and able to feed a planographic printing plate swiftly and reliably.

Planographic printing plate feeding apparatus

A planographic printing plate supply unit comprising: carrying rollers rotating while pressing a stacking bundle, in which planographic printing plates and covering papers are stacked alternately, so as to carry the planographic printing plate and covering paper at the top of the stacking bundle, wherein convex portions which are elastically deformed when pressing the stacking bundle and whose contact area with the planographic printing plate is larger after being elastically deformed than before are provided on the outside periphery of the carrying roller.

Growing community of inventors

Kanagawa, Japan

Kikuo Matsuba