Laser printer toner cartridge seal and method
View Patent ↗A reassembled laser printer toner cartridge and method of manufacture including a cartridge seal assembly in which the remains of an OEM laser printer toner cartridge's toner hopper pull seal strip(s) is left in position, or a substitute conductive strip is put in the same position to simulate the OEM pull seal strip(s) if the OEM strips have been damaged or are missing in order to enable a repaired or remanufactured cartridge to cooperate with the printer in detecting measuring and displaying the amount of toner consumed from the cartridge and shut the printer down, once the toner cartridge is empty, and a toner cartridge hopper foam seal strip assembly that covers the remnants of the OEM seal strips and provides a seal to prevent leakage of toner from the re-filled toner cartridge.
1. A remanufactured laser printer toner cartridge comprising:
a previously used laser printer toner cartridge magnetic roller section;
a previously used laser printer toner cartridge hopper section having a top face, the top face having electrical contacts positioned thereon, and the top face having a central opening;
electrically conductive strips in electrical communication with the electrical contacts, the electrically conductive strips positioned on the top face of the toner cartridge hopper section;
a seal assembly adhered to the top face of the cartridge hopper section over the electrically conductive strips, the seal assembly comprising:
a first foam seal having a central opening and an outer periphery, the outer periphery substantially conforming in shape to the top face of the hopper section,
a rigid sheet adhered to the first foam seal, the rigid sheet having a central opening and an outer periphery, the outer-periphery substantially conforming in shape to the top face of the hopper section,
a pull seal strip removably attached to the rigid sheet and configured to seal the central opening of the rigid sheet, and
a second foam seal adhered to the rigid sheet, the second foam seal having a central opening and an outer periphery substantially conforming in shape to the top face of the hopper section; and
the second foam seal of the seal assembly adhered to the toner cartridge magnetic roller section.
2. The remanufactured laser printer toner cartridge of claim 1 , wherein the electrically conductive strips comprise remnants of original OEM continuity strips.
3. The remanufactured laser printer toner cartridge of claim 1 , wherein the electrically conductive strips comprise a replacement electrically conductive strip assembly.
4. The remanufactured laser printer toner cartridge of claim 3 , wherein the replacement electrically conductive strip assembly comprises a first layer of a polyester material, a second layer of an adhesive material, and a third layer of an electrically conductive material.
5. The remanufactured laser printer toner cartridge of claim 1 , wherein the rigid sheet comprises a polyester material.
6. The remanufactured laser printer toner cartridge of claim 5 , wherein the polyester material comprises acrylic.
7. The remanufactured laser printer toner cartridge of claim 1 , wherein the central opening of the laser printer toner cartridge hopper section further comprises a first central opening end and a second central opening end, and wherein the pull seal strip further comprises:
a rectangular shaped, flexible strip having a first fold section that extends from the first central opening end and over the central opening to the second central opening end; and
a second fold section that extends from the second central opening end and over the central opening back to the first central opening end;
the flexible strip extending over the rigid sheet.
8. The remanufactured laser printer toner cartridge of claim 7 , the seal assembly further comprising:
an electrically communicative contact plate positioned between the first fold section and second fold section of the pull seal strip, the electrically communicative contact plate formed of a thin conductive material and configured to be torn when the pull seal strip is pulled.
9. The remanufactured laser printer toner cartridge of claim 7 , wherein the pull seal strip is heat sealed to the rigid sheet.
10. A method of remanufacturing a laser printer toner cartridge while preserving toner level sensing functionality, comprising:
providing a previously used laser printer toner cartridge magnetic roller section;
providing a previously used laser printer toner cartridge hopper section, the toner cartridge hopper section having a top face;
adhering a toner hopper seal assembly to the toner cartridge hopper section top face, the toner hopper seal assembly substantially covering electrically conductive strips on the toner cartridge hopper section top face; and
adhering the toner hopper seal assembly to the toner cartridge magnetic roller section.
11. The method of remanufacturing a laser printer toner cartridge while preserving toner level sensing functionality of claim 10 , wherein the electrically conductive strips on the toner cartridge hopper section top face comprise remnants of conductive strips installed on the toner cartridge hopper section by the original equipment manufacturer (OEM).
12. The method of remanufacturing a laser printer toner cartridge while preserving toner level sensing functionality of claim 10 , wherein the electrically conductive strips on the toner cartridge hopper section top face comprise a replacement electrically conductive strip assembly.
13. The method of remanufacturing a laser printer toner cartridge while preserving toner level sensing functionality of claim 10 , wherein the previously used laser printer toner cartridge hopper section further comprises a central opening, and wherein the seal assembly comprises:
a first foam seal having a central opening and an outer periphery, the outer periphery substantially conforming in shape to the top face of the hopper section;
a rigid sheet adhered to the first foam seal, the rigid sheet having a central opening and an outer periphery, the outer-periphery substantially conforming in shape to the top face of the hopper section;
a pull seal strip removably attached to the rigid sheet and configured to seal the central opening of the rigid sheet; and
a second foam seal adhered to the rigid sheet, the second foam seal having a central opening and an outer periphery substantially conforming in shape to the top face of the hopper section.