Patent ID: 11884089
Assignee: LANDA CORPORATION LTD.
Field: Textile and paper machines (Mechanical engineering)
Classification: CPC B | IPC B

Claim 0:
1. A printing system comprising:
a. an intermediate transfer member (ITM) comprising an endless flexible belt;
b. a treatment station for applying a solution of PEI (polyethyleneimine) to an outer surface of the ITM so as to pre-treat the ITM outer surface;
c. an image forming station at which droplets of an aqueous ink comprising an aqueous carrier are applied to the pre-treated outer surface of the intermediate transfer member so as to form ink images upon the ITM;
d. a drying station at which the ITM and the ink images thereon are heated so as to evaporate the aqueous carrier from the ink images to leave a residue film, the drying station being spaced from the image forming station;
e. an impression station at which the residue film is transferred to a sheet or web substrate, the impression station being spaced from the drying station, wherein the impression station comprises an impression cylinder and a pressure cylinder for urging the belt against the impression cylinder to cause the residue film resting on the outer surface of the belt to be transferred onto the substrate that passes between the belt and the impression cylinder,, wherein the system is configured such that the solution of PEI is evaporated prior to the formation of the ink images so that the ITM outer surface is substantially dry when the droplets of an aqueous ink are applied thereto.