ELECTROHYDRODYNAMIC JET PRINTING DEVICE WITH EXTRACTOR

摘要

A printing device includes a nozzle and an extractor. An electrostatic extraction field is generated at the extractor and at a discharge opening of the nozzle to extract polarized ink from the nozzle for deposition on a printing substrate. The extractor includes an electrically conductive portion for application of one side of a voltage potential to generate the electrostatic field. The extractor can be in the form of an extractor plate with an opening through which the extracted ink passes, or the extractor can be in the form of another nozzle. The printing device provides a directionality field that affects the trajectory of the extracted ink. The directionality field can include the electrostatic field or a gas flow field. The printing device is useful for electrohydrodynamic jet, or e-jet, printing on a non-conductive substrate.

主权项

1. A printing device, comprising:
a nozzle having a discharge opening and being configured to provide polarized printing fluid at the discharge opening; and an extractor that provides an electrostatic field at the discharge opening that extracts the polarized printing fluid from the nozzle through the discharge opening for deposition on a printing substrate in response to an applied voltage, wherein the nozzle and the extractor are configured to move together with respect to the printing substrate.