Hollow Cylindrical Printing Element
OwnerHiroshi Yamada, Masahisa Yokotainventors
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Abstract
A hollow cylindrical printing element, comprising a hollow cylindrical core material (A) and a resin layer (B) or a resin layer (C). The hollow cylindrical core material (A) further comprises a photosensitive resin hardened layer (1) of 0.05 to 50 mm in thickness having a fiber-like, cloth-like, or film-like reinforcement material and the shore hardness D of 30 to 100°. The resin layer (B) is laminated on the hollow cylindrical core material (A), has a thickness of 0.1 to 100 mm, and allows a pattern to be formed on the surface thereof. The resin layer (C) has a pattern formed on the surface thereof.
Claims21
A cylindrical printing element comprising a hollow cylindrical core material (A) which comprises a cured photosensitive resin layer (1) having a thickness of not less than 0.05 mm and not more than 50 mm, said cured photosensitive resin layer (1) having a fiber-like, cloth-like, or film-like reinforcement material and a shore D hardness of not less than 30 degrees and not more than 100 degrees;
- and
- a resin layer (B) or a resin layer (C) having a thickness of not less than 0.1 mm and not more than 100 mm stacked on said hollow cylindrical core material (A), said resin layer (B) capable of forming a pattern on a surface thereof or said resin layer (C) having a pattern formed on a surface thereof.
A hollow cylindrical core material for forming a hollow cylindrical printing element, comprising a cured photosensitive resin layer (1) having a thickness of not less than 0.05 mm and not more than 50 mm, said cured photosensitive resin layer (1) comprising a fiber-like, cloth-like or film-like reinforcement material and having a shore D hardness of not less than 30 degrees and not more than 100 degrees.
A method for producing a hollow cylindrical printing element comprising the steps of:
- providing a fiber-like, cloth-like or film-like reinforcement material on a cylindrical support surface;
- applying a liquid photosensitive resin composition thereto;
- irradiating the resulting photosensitive resin composition layer with light having a wavelength of not less than 200 nm and not more than 450 nm in air to photo-cure the photosensitive resin composition layer to form a cured photosensitive resin layer (1);
- and stacking a resin layer (B) capable of forming a pattern or a resin layer (C) having a pattern formed on a surface thereof on a hollow cylindrical core material (A) formed from the above-described steps.
A method for producing a hollow cylindrical printing element comprising the steps of:
- winding around a cylindrical support surface a sheet-like material obtained by incorporating a liquid photosensitive resin composition or a semi-cured product of a liquid photosensitive resin composition into a fiber-like, cloth-like or film-like reinforcement material;
- irradiating the resulting photosensitive resin composition layer with light having a wavelength of not less then 200 nm and not more than 450 nm in air to photo-cure the photosensitive resin composition layer to form a cured photosensitive resin layer (1);
- and stacking a resin layer (B) capable of forming a pattern or a resin layer (C) having a pattern formed on a surface thereof on a hollow cylindrical core material (A) formed from the above-described steps.
Dependencies are inferred from the claim text.