G - Physics – 03 – G
Patent
G - Physics
03
G
G03G 17/10 (2006.01) G03G 13/06 (2006.01) G03G 13/22 (2006.01) G03G 15/20 (2006.01)
Patent
CA 2049417
Disclosed is an apparatus for heat development of a migration imaging member containing migration marking material and a softenable material capable of softening upon exposure to heat at a development temperature, which apparatus comprises a heating source, a conveyance means for conveying the migration imaging member past the heating source, a first pinch roller in contact with the conveyance means, and a second pinch roller in contact with the conveyance means, wherein the imaging member passes through a nip between the conveyance means and the first pinch roller subsequent to entering the apparatus and prior to exposure to the heating source and passes through a nip between the conveyance means and the second pinch roller subsequent to exposure to the heating source and prior to exiting the apparatus, wherein the surface temperature of the first pinch roller is maintained at a temperature at least 20~C below the development temperature of the migration imaging member during the period in which the first pinch roller contacts the migration imaging member, wherein the surface temperature of the second pinch roller is maintained at a temperature at least 20~C below the development temperature of the migration imaging member during the period in which the second pinch roller contacts the migration imaging member, and wherein the heating source is maintained at the development temperature of the migration imaging member during development.
Cette invention concerne un dispositif de développement thermique d'un substrat d'imagerie à particules migrantes comportant un matériau de marquage des zones de migration et une couche de matériau thermoplastique adapté pour amollir sous exposition à la température de développement. Le dispositif objet de l'invention comprend une source de chaleur, un moyen de transport faisant défiler le substrat d'imagerie à particules migrantes devant la source de chaleur, un premier rouleau pinceur en contact avec le moyen de transport et un second rouleau pinceur en contact également avec ce même moyen de transport. € son entrée dans le dispositif, le substrat est pincé entre le premier rouleau pinceur et le moyen de transport avant de passer devant la source de chaleur. Avant sa sortie du dispositif, il est pincé, après avoir été chauffé, entre le second rouleau pinceur et le moyen de transport. La température du premier et du second rouleaux pinceurs est maintenue à au moins 20 degrés Celsius de moins que la température de développement pendant qu'ils pincent le substrat contre le moyen de transport, la source de chaleur assurant le maintien de la température de développement pendant le passage du substrat entre les deux rouleaux pinceurs.
Sim & Mcburney
Xerox Corporation
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