Patent ID: 6253040
Filing Date: 2001-06-26
Classification: G03G

Abstract:
A method for operation of an electrographic printer or copier, comprising the steps of:depositing a first layer containing toner particles on a first toner acceptance surface under influence of a force field, the toner particles being taken from a toner supply;transferring at least a part of the deposited toner particles under influence of a second force field, being transferred from the first toner acceptance surface onto a second toner acceptance surface on which the transferred toner particles form a second layer;sensing an actual toner mass per surface section at at least one location of the first layer and/or of the second layer; andmodifying at least one of the force fields by a first control circuit dependent on deviation of the actual toner mass from a predetermined rated toner mass,sensing actual toner charge per surface section at at least one location of the first layer and/or of the second layer; andmodifying charge of the toner particles of at least one of the first and second layers in a second control circuit dependent on deviation of the actual toner charge from a predetermined rated toner charge.