Appeal No. 2000-0808
Application No. 08/906,815
solid at ordinary temperatures is heat-melted. An image is formed
by spraying droplets of the ink composition in a melted state onto
a intermediate transferer and then transferred by contact to the
hydrophobic, i.e., water-resistive, surface of a printing plate
precursor. Appellants assert (specification, page 4) improved
results as compared to a hot-melt type ink-jet system in which a
hydrophobic ink image is formed on a water-receptive image
receiving layer.
Claim 1 is illustrative of the invention and reads as follows:
1. A process for preparing an ink-jet system printing plate,
wherein an image is formed according to a hot melt type ink-jet
system by heat-melting an ink composition that is solid at
temperatures of 35/C or lower, spraying droplets of the ink
composition in a hot melt state from nozzles onto an intermediate
transferrer to form an image, and contact-transferring the image on
the intermediate transferrer to an image receiving layer of a
planographic printing plate precursor, the image receiving layer
being provided on a water-resistive support and containing zinc
oxide and a binder resin and having a surface with a water-contact
angle of 50/ or more and thereafter, a nonimage area of the image
receiving layer is desensitized by chemical reaction treatment to
prepare a planographic printing plate.
The Examiner relies on the following prior art:
Zerillo 4,833,486 May 23, 1989
Schneider et al. (Schneider) 5,072,671 Dec. 17, 1991
Kanda et al. (Kanda) 5,582,106 Dec. 10, 1996
(filed May 11, 1995)
Nakayama et al. (Nakayama) 5,677,098 Oct. 14, 1997
(filed Dec. 27, 1995)
Kato et al. (Kato) 5,714,250 Feb. 03, 1998
(filed Dec. 28, 1995)
2
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