Method for drying coating film in manufacture of thermal-developable light-sensitive material
AssigneeFuji Photo Film Co., Ltd.
InventorJunpei Iwado
Life of this patent
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Abstract
Since a coating film is cured to some extent by the gelation of the coating film in the chilling-zone process and the first-stage drying in the PAC drying process, then, it is fully dried by the second-stage drying in the HAC drying process, liquid scattering from the surface of the coating film during drying can be prevented, even if the binder is difficult to cure as in the coating film for a thermal-developable light-sensitive material. Thereby, good coating film surface condition and good photographic performance can be obtained.
Claims18
A method for drying, with drying air in a drying process, a coating film in manufacture of thermal-developable light-sensitive material formed by coating with a coating liquid that contains an organic silver salt, a reducer for silver ions, a polymer latex, and silver halide particles to a support being conveyed in a coating process, wherein:
- the drying process comprises:
- a chilling-zone step for cooling the coating film with cold air;
- a plane air cushion drying step for a first-stage drying of the coating film in a non-contact state while floating and supporting the support by supplying a hot drying air of a predetermined wind velocity to both sides of the support;
- a helical air cushion drying step for a second-stage drying of the coating film in a non-contact state while helically winding the support around a circumferential surface of a cylinder and floating and supporting the support by supplying the hot drying air from the circumferential surface of the cylinder to the coating film.
Dependencies are inferred from the claim text.