Patent · US Active

Method to operate a digital printer and determine the toner concentration, as well as an associated digital printer

US9031426B2 · kind B2 · utility

2Cited by

2References

12Claims

0Family size

Assignee

Océ Printing Systems GmbH · DE

Inventors

Alfred Zollner · Eitting, DE
Alfons Ritzer · Dorfen, DE
Martin Berg · Poing, DE
Attila Bogdan · Rattenkirchen, DE

Key dates

Filing date	Apr 17, 2013
Grant date	May 12, 2015
Priority date	—
Expiry date	Jul 26, 2033

Classification

Technology area (CPC G)Physics
CPC primaryG03G15/105
WIPO fieldOptics
WIPO sectorInstruments

Abstract

In a method or digital printer to print a recording material with toner particles applied with a liquid developer, toner concentration of the liquid developer is determined via measurement with aid of ultrasonic pulses. At least one ultrasonic pulse is generated by discharging an ultrasound emitter charged with a charge voltage. The ultrasonic pulse permeates the liquid developer and is received by an ultrasound receiver which generates a reception signal corresponding to the received ultrasonic pulse. With a control device, the charge voltage is regulated to a value such that a representative value of the reception signal corresponds to a predetermined desired value. The toner concentration is determined from the regulated charge voltage.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.