Patent ID: 7997890
Filing Date: 2011-08-16
Classification: B29C,B82Y,G03F

Abstract:
1. Apparatus for transferring a pattern from a template having a structured surface to a substrate carrying a surface layer of a radiation polymerisable fluid, said apparatus comprising: a first main part and a second main part having opposing surfaces, means for adjusting a spacing between said main parts, support means for supporting said template and substrate in mutual parallel engagement in said spacing with said structured surface facing said surface layer, a radiation source wherein said radiation source is positioned in said first main part, devised to emit radiation usable for solidifying a selected polymerisable fluid into said spacing from a first direction, a cavity having a first wall comprising a flexible membrane devised to engage said template or substrate, means for applying an adjustable overpressure to a medium present in said cavity, said cavity being defined by a part of the surface of said first main part, a flexible seal member arranged in and protruding from said first main part surface and said membrane which engages said seal member, said membrane being transparent to a wavelength range of said radiation, said radiation source being positioned behind said membrane, and a heater device having a surface facing said spacing, wherein said heater device is positioned in said second main part, having said surface of the heater device facing said spacing from a second direction, opposite said first direction.