Device for drying a recording medium which is printed with ink in a printer, and method therefor

摘要

In a method or device to dry a web-shaped recording medium in a printer, the web-shaped recording medium is printed with aqueous ink and subsequently directed with a predetermined web tension past a heatable body whose contact surface that faces towards the recording medium is brought into contact with a side of said recording medium that has not been freshly printed to dry said recording medium in a drying operation. A first guide element is arranged before the heatable body and a second guide element is arranged after the heatable body, the first and second guide elements guiding the recording medium. The contact surface of the heatable body is substantially flat. A negative pressure device generates a negative pressure at the contact surface facing towards the recording medium. The negative pressure is deactivated in a halt operation, the deactivation process taking place continuously over an adjustable time interval.

主权项

1. A device to dry a previously printed moving web-shaped recording medium in an ink-jet printer, comprising:
a heatable body past which is directed said previously printed web-shaped recording medium that has previously been freshly printed with ink before being transported to the heatable body and which has a predetermined web tension, said heatable body having a contact surface that faces towards the moving recording medium and which is brought into contact with a side of said recording medium that has not been freshly printed to dry said moving recording medium in a drying operation while the recording medium is moving; a first guide element arranged before said heatable body as viewed in a transport direction of the recording medium and which receives said previously printed moving recording medium, and a second guide element arranged after the heatable body, said first and second guide elements respectively guiding the moving recording medium; said contact surface being substantially flat and, for drying, runs substantially congruently with a tangential plane defined by the first guide element and the second guide element; a negative pressure device being provided via which a negative pressure relative to an environment is generated at the contact surface facing towards the moving recording medium when the recording medium is moving; and the negative pressure being deactivated in a halt operation of the recording medium so that when the recording medium is halted and not moving the negative pressure is deactivated, the deactivation taking place continuously by continuously reducing the negative pressure over an adjustable time interval.