Patent ID: 8660475

Claim:
A printer, comprising: an imaging arrangement, a digital storage device, and a control circuit, configured to: calculate toner coverages of different toners deposited on a previous media unit, and instruct the imaging arrangement to deposit a service patch comprising an amount of toner of different toners between subsequent media units, wherein the amounts of toner are determined as a function of the corresponding toner coverages of at least one previous media unit; in which the control circuit: calculates toner sub-coverages on respective longitudinal strip shaped sections of the media unit, the longitudinal strip shaped sections have a length-direction that is parallel to the media advance direction, and deposits the service patch so as to comprise sub-patches at least a part of the sub-patches being arranged near corresponding ends of the longitudinal strip shaped sections, in which toner amounts of the sub-patches are determined as a function of the corresponding toner sub-coverages in the respective longitudinal strip shaped sections.