Sheet material cutting apparatus for cutting a band-shaped thermal imaging material

摘要

The decurl apparatus (10) comprising: heating means (40) for subjecting an image recording carrier web (12) to a heating treatment at a constant temperature exceeding the glass transition temperature of a support for a constant time period; and cooling means (42) for cooling the image recording carrier web (12) after heated, to the glass transition temperature or lower, while keeping it in a predetermined shape. The heating means (40) includes: a heating roller (60) to be induction-heated; and holding rollers (70a,70b) to be arranged at arbitrary angular positions with respect to the outer circumference of the heating roller (60). As a result, the image recording carrier web (12) can be reliably decurled with the simple construction but without being influenced by the transfer velocity or the like. The image recording carrier web (12) is then cut in a cutting device (24,26).