System for controlling the ink level in franking machine

Abstract

In a franking machine comprising a base and a disposable head provided with ink jet printing means, a method of printing postal indicia is proposed, comprising the following steps: activating said disposable head in response to determined parameters of identification extracted from memory means of this head and recognized as valid by said base, sending towards said disposable head from said base franking data representative of postal indicia to be printed, comprising static data and dynamic data, calculating in said base the number of droplets to be projected in order to print the dynamic data and add this number to that corresponding to the printing of the static data, previously memorized in said memory means, to obtain a total number of droplets to be projected for printing said postal indicia, determining the volume of ink consumed corresponding to that total number of droplets to be projected and memorize this volume of consumed ink in said memory means, and calculating the remaining volume of ink in said ink reservoir by subtracting said volume of consumed ink from said nominal volume of ink.

Dependencies are inferred from the claim text.