Plate making device and printer and printing system using the plate making device
AssigneeFuji Photo Film Co., Ltd.
InventorsHideyuki Koguchi, Takao Nakayama, Koji Kamiyama
Life of this patent
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Abstract
A plate material the surface of which is formed of film including as its major component a material whose surface changes from a lipophilic state to a hydrophilic state by a photocatalytic reaction and returns to a lipophilic state when subsequently subjected to a heat treatment is used for making a printing plate. The substantially entire surface of the plate material is uniformly exposed to active light and an image is written in a heat mode on the surface of the plate material, which has been exposed to the active light.
Claims16
A plate making device comprising:
- a plate material having a surface layer formed of film including as its major component a material whose surface changes from a lipophilic state to a hydrophilic state by a photocatalytic reaction and returns to a lipophilic state when subsequently subjected to a heat treatment,
- an exposure means which uniformly exposes the substantially entire surface of the plate material to active light, and
- an image writing means which writes an image in a heat mode on the surface of the plate material, which has been exposed to the active light, and makes a printing plate
- wherein said material is one of titanium oxide and zinc oxide.
An offset printer comprising:
- a plate making section consisting of a plate material having a surface layer formed of film including as its major component a material whose surface changes from a lipophilic state to a hydrophilic state by a photocatalytic reaction and returns to a lipophilic state when subsequently subjected to a heat treatment,
- an exposure means which uniformly exposes the substantially entire surface of the plate material to active light,
- an image writing means which writes an image in a heat mode on the surface of the plate material which has been exposed to the active light, thereby making a printing plate,
- an ink supply means which supplies ink to an imaged region of the printing plate,
- an ink removing means for removing ink remaining on the printing plate after printing, and
- a transfer section which transfers ink on the imaged region of the printing plate to a printing medium,
- wherein said material is one of titanium oxide and zinc oxide.
A plate material, comprising:
- a surface layer formed of film including as its major component a material whose surface changes from a lipophilic state to a hydrophilic state by a photocatalytic reaction and returns to a lipophilic state when subsequently subjected to a heat treatment wherein said material is one of titanium oxide and zinc oxide.
Dependencies are inferred from the claim text.