Apparatus for limited-heat curing of photosensitive coatings...

B - Operations – Transporting – 41 – F

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B41F 23/04 (2006.01) F21V 9/04 (2006.01) F26B 3/28 (2006.01)

Patent

CA 2450718

An apparatus (10) for curing photosentive inks and coatings includes a lamp (34) generating radiant energy containing ultraviolet radiation. The apparatus further includes a filter assembly (46) receiving at least a portion of the radiant energy from the lamp (34). The filter assembly (46) includes a body (48) defining an open interior and panes (58) located on opposite sides of the body (48) to enclose the interior and form a chamber (54). An inlet and an outlet communicate with the chamber to provide for circulation of a fluid through the chamber. The filter assembly (46) further includes a solid filter (64) positiones within the chamber (54). The solid filter (64) and the panes (58) are transmissive to the ultraviolet radiation of the radiant energy generated by the lamp (34). The apparatus (10) may include a shutter system (104) having a plurality of opaque particles (106) suspended in a liquid coolant for circulation of the particles through the chamber.

La présente invention concerne un appareil (10) qui permet de polymériser des encres et des revêtements photosensibles, lequel appareil comprend une lampe (34) qui produit une énergie radiante contenant un rayonnement ultraviolet. L'appareil comprend en outre un ensemble filtre (46) qui reçoit au moins une partie de l'énergie radiante en provenance de la lampe (34). L'ensemble filtre (46) comprend un corps (48) qui définit un intérieur ouvert et des panneaux (58) placés sur les côtés opposés du corps (48) afin d'entourer l'intérieur et de former une chambre (54). Une entrée et une sortie communiquent avec la chambre, qui permettent la circulation d'un liquide à travers celle-ci. L'ensemble filtre (46) comprend en outre un filtre solide (64) placé à l'intérieur de la chambre (54). Le filtre solide (64) et les panneaux (58) transmettent le rayonnement ultraviolet de l'énergie radiante produite par la lampe (34). L'appareil (10) peut comprendre un système d'obturation (104) comportant une pluralité de particules opaques (106) suspendues dans un liquide réfrigérant qui fait circuler les particules à travers la chambre.

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