Support for image-recording material, process for manufacturing thereof, and image-recording material
View Patent ↗An object is to provide a support for image-recording material excellent in dimension stability and smoothness, a manufacturing process of the support, and an image-recording material which employs such support and which can obtain a high quality image. Accordingly, provided is a support for an image-recording material which comprises at least a sheet of raw paper wherein a pressure drying treatment is performed at a temperature of from 100° C. to 200° C. on the raw paper sheet having a water content of from 30% to 70%, while applying pressure to a surface of the raw paper sheet on which an image-recording layer is to be formed, and a calender treatment is carried out afterwards using at least one calender.
1. A process for manufacturing a support for image-recording material, comprising:
pressure drying a wet paper at a temperature of from 110° C. to 180° C. while applying pressure of 0.05 MPa to 1.5 MPa to a side of the wet paper on which an image-recording layer is to be formed,
wherein the wet paper has a water content of 30% to 70% prior to pressure drying.
2. A process for manufacturing a support for image-recording material according to claim 1 , wherein pressure drying is performed with a pressing machine.
3. A process for manufacturing a support for image-recording material according to claim 1 , further comprising:
calendering an article made by pressure drying the wet paper with at least one calendering apparatus.
4. A process for manufacturing a support for image-recording material according to claim 3 , wherein calendering is performed using at least one of a machine calendering apparatus, a soft calendering apparatus, and a shoe calendering apparatus.
5. A process for manufacturing a support for image-recording material according to claim 3 , wherein the calendering apparatus has a metal roller with a surface temperature of 110° C. or higher.
6. A process for manufacturing a support for image-recording material according to claim 1 , wherein the wet paper after pressure drying comprises a pulp paper material having a freeness of from 200 ml C.S.F. to 400 ml C.S.F.
7. A process for manufacturing a support for image-recording material according to claim 1 , wherein the wet paper after pressure drying comprises a pulp paper material having a mass average fiber length of from 0.45 mm to 0.70 mm.
8. A process for manufacturing a support for image-recording material according to claim 1 , wherein the wet paper after pressure drying comprises at least one of alkyl ketene dimer and an epoxy aliphatic amide.
9. A process for manufacturing a support for image-recording material according to claim 1 , wherein a polymer layer is coated on at least one side of the wet paper after pressure drying.
10. A process for manufacturing a support for image-recording material according to claim 9 , wherein the polymer layer comprises a polyolefin resin.