Excess toner evacuation process
View Patent ↗A system and process for emptying excess toner from repaired or remanufactured laser printer toner cartridges, for use in both magnetic toner and non-magnetic toner after the cartridge has been assembled and post-assembly tested. The removal of excess toner from the cartridge prevents the cartridge from “sweating”, i.e., leaking toner out from the developing roller section of the cartridge and into the shipping packaging box during shipping and storage.
1. A method of removing excess toner remaining on a toner hopper pull seal strip after performance of a post-test of a remanufactured toner cartridge, the toner hopper pull seal strip having a first surface facing towards a toner hopper of the cartridge and second surface facing away from the toner hopper of the cartridge, the method comprising:
during disassembly of the toner cartridge for remanufacture, forming a hole in the toner cartridge, the hole allowing access to an interior volume of the toner cartridge adjacent to the second surface of the pull seal strip;
temporarily closing the hole during reassembly of the toner cartridge and post- test;
after post-test, reopening the hole;
applying a vacuum to the hole to remove the excess toner from hopper pull seal strip; and
applying a seal patch to the hole.
2. The method of removing excess toner remaining on a toner hopper pull seal strip after performance of a post-test of a remanufactured toner cartridge of claim 1 , where forming a hole comprises drilling a hole.
3. The method of removing excess toner remaining on a toner hopper pull seal strip after performance of a post-test of a remanufactured toner cartridge of claim 2 , further comprising cleaning excess plastic burrs from the toner cartridge after drilling the hole.
4. The method of removing excess toner remaining on a toner hopper pull seal strip after performance of a post-test of a remanufactured toner cartridge of claim 1 , wherein applying a vacuum to the hole to remove the excess toner comprises:
placing a vacuum nozzle over the hole;
activating a vacuum source; and
vacuuming the excess toner out of the cartridge.
5. The method of removing excess toner remaining on a toner hopper pull seal strip after performance of a post-test of a remanufactured toner cartridge of claim 1 , further comprising vibrating the toner cartridge while applying a vacuum to the hole.
6. The method of removing excess toner remaining on a toner hopper pull seal strip after performance of a post-test of a remanufactured toner cartridge of claim 1 , wherein temporarily closing the hole during reassembly of the toner cartridge and post-test comprises closing the hole with a tape seal.