Direct-to-press imaging system for use in lithographic printing

Details Direct-to-press imaging system for use in lithographic printing Direct-to-press imaging system for use in lithographic printing

1992-12-15

1994-08-02

Burr, Edgar S.

Printing

Planographic

Lithographic plate making, and processes of making or using...

101465, 101478, B41C 110

Patent

active

053335481

ABSTRACT:
A direct-to-press imaging system for use in lithographic printing wherein a master-image printing cylinder is used with separate application of ink and water onto its surface to enable repetitive conveyance of image-formatted ink films onto substrates for printing purposes. The imaging system includes a master-image printing cylinder adapted for receiving a hydrohilic coating layer on its surface and a device for laying down a uniform layer of hydrophilic material on the surface of this cylinder. An apparatus is also provided for applying oleophilic materials in image-formatted patterns on top of the layer of hydrophilic material on the master-image printing cylinder to form a printing structure having separate hydrohilic and oleophilic areas of the format to be printed. Further, a mechanism is provided for removing the printing structure including both the hydrophilic and oleophilic materials from the surface of the master-image printing cylinder so that a new printing structure corresponding to a new image to be printed can be formed on the master-image printing cylinder.

REFERENCES:
patent: 4297436 (1981-10-01), Kubotera et al.
patent: 4718340 (1988-01-01), Love, III
patent: 4846065 (1989-07-01), Mayrhofer et al.
patent: 4958564 (1990-09-01), Fuhrmann et al.
patent: 5129321 (1992-07-01), Fadner
patent: 5188033 (1993-02-01), Fadner
patent: 5211113 (1993-05-01), Buschulte

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