Planographic printing plate precursor and planographic printing method
AssigneeFuji Photo Film Co., Ltd.
InventorsSatoshi Hoshi, Keitaro Aoshima
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Abstract
The present invention provides a planographic printing plate precursor comprising a photosensitive layer on a support, the photosensitive layer including an infrared absorbent, a radical polymerization initiator and a radical polymerizing compound, the photosensitive layer being recordable with irradiation with an infrared ray, and being at least one of soluble and dispersible in water.
Claims20
A planographic printing plate precursor comprising a photosensitive layer on a support, the photosensitive layer including an infrared absorbent, a radical polymerization initiator and a radical polymerizing compound, the photosensitive layer being recordable with irradiation with an infrared ray, and being at least one of soluble and dispersible in water.
A planographic printing method comprising the steps of:
- a) forming a planographic printing plate precursor by disposing a photosensitive layer able to record by irradiation with an infrared ray on a support, the photosensitive layer comprising an infrared absorbent, a radical polymerizing compound, and being at least one of soluble and dispersible in water;
- b) image-wise exposing the planographic printing plate precursor by one of:
- (i.) setting planographic printing plate precursor in a printing machine and then exposing the planographic printing plate precursor;
- and
- (ii.) exposing the planographic printing plate precursor with infrared laser light and then setting the exposed planographic printing plate in the printing machine;
- and
- c) printing by providing water components and oil based ink without use of a developing process.
Dependencies are inferred from the claim text.