Techniques to determine concentration parameters of conductive liquid electrophoretic (LEP) inks

摘要

Techniques to determine concentration parameters of conductive liquid electrophoretic (LEP) inks are illustrated herein. In an example, a layer of conductive LEP ink is formed on a developer roller using electrostatic forces acting on the conductive LEP ink. A current is generated in response to a voltage between a measurement electrode and a developer roller. The current flows through the conductive LEP ink layer.

主权项

1. A method to measure a concentration parameter of a conductive liquid electrophoretic (LEP) ink, the method comprising:
forming a layer of the conductive LEP ink on a developer roller using electrostatic forces acting on the conductive LEP ink; determining an electrical parameter related to a current generated in response to a voltage between a measurement electrode and the developer roller wherein the measurement electrode is comprised in a squeegee roller or a cleaning roller and wherein the measurement electrode cooperates with the developer roller in a binary ink developer, the current flowing through the conductive LEP ink layer, the current magnitude being co-related with the concentration of the conductive LEP ink; and associating the determined electrical parameter with the concentration parameter of the conductive LEP ink.