Letterpress printing machine
AssigneeToppan Printing Co., Ltd.
InventorsYukio Konaka, Tomoaki Fukuhara, Hiroshi Matsuzawa
Life of this patent
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Abstract
A letterpress printing machine is disclosed including a rotary printing cylinder in which a relief printing plate is installed, a substrate surface plate on which a substrate is placed, an ink supply device supplying ink on the relief printing plate, a relief printing plate washing equipment washing the surface of the relief printing plate, and a wiper for a plate. The relief printing plate washing equipment can include a washing liquid supplying unit, an air blasting unit jetting pressurized gas to the relief printing plate, a suction unit sucking the washing liquid scattered by air blasting unit, and a washing liquid recovery unit.
Claims18
A letterpress printing machine comprising a rotary printing cylinder in which a relief printing plate is installed, a substrate surface plate on which a substrate is placed, an ink supply device supplying ink to the relief printing plate, a relief printing plate washing equipment washing the surface of the relief printing plate, a wiper for a plate which wipes off washing liquid on the relief printing plate after washing,
- wherein the relief printing plate washing equipment includes a washing liquid supplying unit supplying washing liquid to the surface of the relief printing plate, an air blasting unit jetting pressurized gas to the relief printing plate to which the washing liquid is supplied, a suction unit sucking the washing liquid scattered by the air blasting unit, and a washing liquid recovery unit receiving the washing liquid supplied to the surface of the relief printing plate.
A letterpress printing machine including a rotary printing cylinder having a relief printing plate, a substrate surface plate on which a substrate is placed and an ink supply device supplying ink on the relief printing plate,
- wherein the machine has a mechanism for keeping printing pressure between the relief printing plate and the substrate within a printing face constant.
A letterpress printing machine comprising a rotary printing cylinder in which a relief printing plate is installed, a surface plate on which a substrate is placed and ink supply means supplying ink to the surface of the relief printing plate,
- wherein ink supply means is placed between a contact point of the relief printing plate and the substrate, and a position of right angle just before the contact point of the printing cylinder,
- and wherein ink supply means faces a surface of the printing cylinder.
Dependencies are inferred from the claim text.