A method for franking mail items fed to a franking machine. The mail items are drawn from the underside of a stack for separation or are fed individually on a conveying section upstream of the franking machine to a printing unit for franking, after franking, are discharged in the opposite direction from the printing unit. The mail items are fed via a diverter section to the conveying section, after franking, are conveyed via the diverter section which is switched over to change the conveying direction into a depositing apparatus below the diverter section. The mail items are guided in the opening region of the franking machine into the printing position and are returned out of the printing position. The printing position of a mail item fed to the printing unit is determined by a print head movement-controlled from a readiness position pursuant to the format length of the mail item.

A system for printing an imprint on a flat material includes a cartridge holding a consumable (e.g. ink) and at least one material processing device (MPD) (e.g. franking machine) having a printer and a data processor connected to the printer to control use of the cartridge to produce the imprint. The MPD is configured to detect insertion of the cartridge into the printer and generate current consumption information representing the use of the cartridge by the printer since insertion. The cartridge can include a first non-volatile memory that (unchangeably) stores a unique cartridge identification of the cartridge. The data processor is configured to: cause, based on a predeterminable usage-relevant event occurring, a current use-information, generated based on the current consumption information logically linked to the cartridge identification, to be stored in a second memory, and write to an irreversibly writable memory area of the first memory when the event occurs.

A method for franking mail items fed to a franking machine. The mail items are drawn from the underside of a stack for separation or are fed individually on a conveying section upstream of the franking machine to a printing unit for franking, after franking, are discharged in the opposite direction from the printing unit. The mail items are fed via a diverter section to the conveying section, after franking, are conveyed via the diverter section which is switched over to change the conveying direction into a depositing apparatus below the diverter section. The mail items are guided in the opening region of the franking machine into the printing position and are returned out of the printing position. The printing position of a mail item fed to the printing unit is determined by a print head movement-controlled from a readiness position pursuant to the format length of the mail item.

A system for printing an imprint on a flat material includes a cartridge holding a consumable (e.g. ink) and at least one material processing device (MPD) (e.g. franking machine) having a printer and a data processor connected to the printer to control use of the cartridge to produce the imprint. The MPD is configured to detect insertion of the cartridge into the printer and generate current consumption information representing the use of the cartridge by the printer since insertion. The cartridge can include a first non-volatile memory that (unchangeably) stores a unique cartridge identification of the cartridge. The data processor is configured to: cause, based on a predeterminable usage-relevant event occurring, a current use-information, generated based on the current consumption information logically linked to the cartridge identification, to be stored in a second memory, and write to an irreversibly writable memory area of the first memory when the event occurs.