Patent ID: 9604483
Date: 2017-03-28
CPC Classifications: B41J,D21H

Claim:
1. An inkjet printing apparatus for printing an image on an absorbent substrate comprising a print side and an opposite side, the inkjet printing apparatus comprising: a print head unit defining a print zone on the print side; and a dust removal device comprising a pumping chamber formed of a pre-pumping sub-chamber, a print zone sub-chamber and a post-pumping sub-chamber, said chambers being positioned at the opposite side, wherein the absorbent substrate is conveyed between the print head unit and the dust removal device, wherein the pre-pumping sub-chamber is positioned substantially upstream from the print zone, the print zone sub-chamber is positioned substantially at the print zone, and the post-pumping sub-chamber is positioned downstream from the print zone, and wherein the print zone sub-chamber, the pre-pumping sub-chamber, and the post-pumping sub-chamber are arranged such that a second pressure in the print zone sub-chamber is higher than a first pressure in the pre-pumping sub-chamber and a third pressure in the post-pumping sub-chamber so as to create a suction impact to dust particles generated by the conveyed absorbent substrate.