Hp Indigo B.v.

Pavel Sandik

Ziv Gilan

Yaron Grinwald

Gregory Katz

Michael Kokotov

Zvi Shemer

Shlomo Haik

Yehuda Roth

Shai Atad

In one example of the disclosure, an uncalibrated sensor may be calibrated. Calibrated sensor data is obtained. The data relates to an amount of light transmitted through an ink solution of a first colour as a function of ink concentration. An amount of light transmitted through an ink solution of the first colour is measured, using the uncalibrated sensor, at a plurality of ink concentrations. A calibration factor relating the light transmission of the calibrated sensor for the first colour and the light transmission of the uncalibrated sensor for the first colour is determined, using a processor, based on the obtained data and the measurements.

Calibration of a sensor

A liquid electrophotographic (LEP) ink can include a liquid ink vehicle, a conductive toner including a conductive pigment and a polymeric binder, and a charge director. The liquid electrophotographic ink can have a conductivity of from 150 to 2000 picoSiemens.

Liquid electrophotographic inks

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Ness Ziona, Israel

Pavel Sandik