Patent ID: 6575092
Filing Date: 2003-06-10
Classification: B41F

Abstract:
An ink unit with an ink supply device for an ink ductor comprising:an ink supply strip arranged adjacent the ink ductor; a plurality of ink feed devices arranged next to each other in said ink supply strip and extending axially along the ink ductor; a separate ink feed line for each one of said plurality of ink feed devices; at least one main chamber for each one of said plurality of ink feed devices, each said main chamber having an ink inlet and an ink discharge end, each said ink discharge end terminating at the ink ductor in a slit-shaped nozzle, each said slit-shaped nozzle extending in a tangential direction to the ink ductor, each said main chamber having a width generally transverse to a direction of ink flow in said main chamber from said ink inlet to said ink discharge end and extending axially with respect to the ink ductor and having a thickness generally transverse to said ink supply strip, each said main chamber width increasing and each said main chamber thickness decreasing in said direction of ink flow in each said main chamber; and a pre-chamber located in said direction of ink flow in the ink supply device after said ink feed line and before said ink inlet to each said main chamber, each said pre-chamber having a width extending axially with respect to the ink ductor and corresponding to at least twice a diameter of said ink feed line.