A printhead cleaning system includes a wiper assembly configured for putting a printhead wiper in contact with the printhead. A solvent container is configured for providing solvent to the printhead wiper. A lateral feed mechanism is coupled to the printhead and the wiper assembly, and is configured
A printhead cleaning system includes a wiper assembly configured for putting a printhead wiper in contact with the printhead. A solvent container is configured for providing solvent to the printhead wiper. A lateral feed mechanism is coupled to the printhead and the wiper assembly, and is configured for driving the wiper assembly in reciprocating motion along the printhead. The cleaning cycle can be started when a predetermined condition (such as a number of operations) is reached. A method for printhead cleaning can include starting a cleaning cycle by lifting a printhead from a printing position once a number of printing operations reaches a predetermined value, and transporting a cleaning assembly along the printhead for a predetermined time duration or number of passes, while providing contact between the cleansing applicator and the printhead.
대표청구항▼
1. A thermal printhead cleaning system, comprising: a thermal printhead (TPH) having a longitudinal axis, a top face and a bottom face, and a first end and a second end;a belt assembly having a first pulley operably coupled to the top face of the TPH and disposed near the first end of the TPH, and a
1. A thermal printhead cleaning system, comprising: a thermal printhead (TPH) having a longitudinal axis, a top face and a bottom face, and a first end and a second end;a belt assembly having a first pulley operably coupled to the top face of the TPH and disposed near the first end of the TPH, and a second pulley disposed at a predetermined distance from the first pulley, the first and second pulleys configured for supporting a belt aligned with the longitudinal axis and disposed above the top face of the TPH;a carriage operably coupled to the belt, and configured to be moved along the TPH;a solution transfer assembly operably coupled to the carriage, and configured for transferring cleaning solution from a cleaning solution reservoir through one or more tubes connecting the reservoir and the solution transfer assembly, to a cleansing member attached to the carriage and facing the TPH; anda motor operably coupled to the second pulley, and configured for moving the belt along the longitudinal axis. 2. The cleaning system according to claim 1, further including a counter configured for triggering the cleaning system when a number of printing operations reaches a predetermined threshold. 3. The cleaning system according to claim 1, wherein the cleansing member includes foam. 4. The cleaning system according to claim 1, wherein the cleansing member is detachable. 5. A printhead servicing device, comprising: a printing operation counter, configured for initiating a cleaning cycle;a printhead, having a lifted mode and a printing mode;a wiper assembly operably coupled with the printhead, and having a printhead wiper and an engagement means configured for putting the printhead wiper at least in partial contact with the printhead;a solvent container operably coupled to the wiper assembly, and configured for providing solvent to the printhead wiper; anda lateral feed mechanism operably coupled to the printhead and the wiper assembly, and configured for driving the wiper assembly in reciprocating motion along the printhead. 6. The device according to claim 5, wherein the lateral feed mechanism includes a belt, a gear configured for supporting the belt, and a rotating means configured for moving the belt. 7. The device according to claim 5, wherein the solvent is fluid. 8. The device according to claim 7, wherein the solvent includes isopropyl alcohol. 9. The device according to claim 5, wherein the printhead wiper includes one or more foam swabs. 10. The device according to claim 6, wherein the rotating means includes a motor. 11. A method for printhead cleaning, comprising: counting a number of printing operations;once the number of printing operations reaches a predetermined value, starting a cleaning cycle by lifting a printhead from a printing position;dispensing a cleaning substance from a container operably coupled to the printhead, to a cleansing applicator of a cleaning assembly; andactuating a motorized assembly for transporting the cleaning assembly along the printhead for a predetermined time duration or number of passes, while providing at least partial contact between the cleansing applicator and the printhead. 12. The method according to claim 11, wherein the predetermined value comprises 1000 operations. 13. The method according to claim 11, wherein the cleaning substance is liquid. 14. The method according to claim 11, further comprising keeping the cleaning assembly in a stand-by mode at a location proximal to the printhead and outside a print zone, when the printhead cleaning cycle is not being executed. 15. The method according to claim 11, further comprising terminating the transporting of the cleaning assembly along the printhead, returning the cleaning assembly in a stand-by mode, and lowering the printhead to the printing position. 16. The method according to claim 11, further comprising dispensing the cleaning substance from the container operably coupled to the printhead, to a transfer station, and transferring the cleaning substance from the transfer station to the cleansing applicator of the cleaning assembly.
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