MACHINE FOR EXPOSING PRINTED CIRCUIT BOARDS

摘要

The invention concerns a machine for exposing printed circuit boards, comprising: a support (26) for said printed circuit board (24); a mobile printing plate support (10) including a substantially rectangular frame (12) and a transparent plate (14) adapted to receive said printing plate; means for peripheral sealing; means for generating a vacuum; at least one deformable sealed casing (30, 32) arranged between said support and said transparent plate around at least part of said printed circuit board; a pressurized gas source at a pressure higher than the value of said vacuum to feed said casing whereby, when a vacuum is generated in said volume, the periphery of said transparent plate is applied on said casing.