Printing unit using various ink types

B - Operations – Transporting – 41 – F

Patent

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Details

IPC codes

B41F 13/42 (2006.01) B41F 13/00 (2006.01)

Type

Patent

Patent number

CA 2247250

Description

A printing unit (1) of a rotary printing press for using various ink types is provided. The printing unit includes an inking mechanism (45), a print cylinder (3), and a blanket cylinder (2). The inking mechanism (45) and the cylinders (2, 3) are mounted in side walls of the printing unit (1). A housing (14) at least partially surrounds the inking mechanism (45) and the cylinders (2, 3) to maintain a surrounding atmosphere within an at least semi-enclosed area (100) of the printing unit (1). A chemical agent is selectively added to the atmosphere in the semi-enclosed area (100) to reduce the rate of evaporation of a substance in the ink.

L'invention a trait au groupe imprimant (1) d'une presse d'imprimerie rotative pouvant utiliser divers types d'encres. Le groupe imprimant comporte un dispositif encreur (45), un cylindre d'impression (3) et un cylindre porte-blanchet (2). Le dispositif encreur (45) et les cylindres (2 et 3) sont montés sur les parois latérales du groupe imprimant (1). Un bâti (14) enveloppe, en partie au moins, le dispositif encreur (45) et les cylindres (2 et 3) afin de maintenir une certaine atmosphère dans au moins une zone semi-fermée (100) du groupe imprimant (1). On introduit, de manière sélective, un agent chimique dans l'atmosphère de la zone semi-fermée (100) afin d'abaisser la vitesse d'évaporation d'une substance présente dans l'encre.

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