To provide a new sheet printer which can apply especially corona treatment to a print sheet to be printed in an in-line mode within the sheet printer or in an in-line mode to a printing process, right before actually printing the print sheet.
A sheet supply device is constituted as a single sheet feeder (10) which can convey print sheets without being piled up in the region of a conveyance stand (16) by dealing with the print sheets lifted up from the a stack of the print sheets (11) to be fed one by one. In addition, in the region of the conveyance stand (16) equipped with at least two conveyance systems (17 and 18), a plurality of corona treaters (21, 22 and 23) which apply corona treatment to the entire surface of the print sheet, are provided. Further, on the downstream side of the conveyance stand (16), a stream feeder (24) for creating a sheet flow of the print sheets partially piled up over each other, from the print sheets conveyed without being piled up in the region of the conveyance stand (16), is arranged. The print sheets are supplied to the printer or a varnishing device as the flow of the piled sheets slipped out of place, through a sheet placing stand (26) arranged on the downstream side of the stream feeder (24).
IHME ANDREAS
KLITZA ALEXANDER
RICHTER HANSJOERG
Takashi Watanabe
Yasuhiko Murayama
Shinya Mitsuhiro