Keyless printing system for keyless lithographic printing

Details Keyless printing system for keyless lithographic printing Keyless printing system for keyless lithographic printing

B - Operations, Transporting

41

F

B41F 7/26 (2006.01) B41F 31/00 (2006.01) B41F 31/06 (2006.01)

Patent

CA 2049277

- i - ABSTRACT OF THE DISCLOSURE In a keyless lithographic printing press having blanket cylinder (10) and plate cylinder (15) with printing plate mounted thereon, an improved keyless printing systems having: a system (14) for supplying dampening water to the plate cylinder (15) at least one form roller (16) in rotational contact with the plate cylinder (15); inking drum (11) in rotational contact with the form roller (l6); at least first and second transfer rollers (13, 17) in rotational contact with the inking drum (11); metering roller (20) having at least an oleophilic And hydrophobic surface which retains quantity of printing fluid, the metering roller (20) being in rotational contact with the first and second transfer rollers (13, 17); and a system (30) for supplying printing fluid to the metering roller (20).

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