Printer Cartridge Having A Parasitic Power Circuit
AssigneeMVM Technologies, Inc.
InventorBruce Hammond
Life of this patent
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Abstract
Non-OEM printer cartridges for printers expecting an OEM cartridge are presented. A non-OEM printer cartridge includes a medium delivery system other than a medium delivery system ordinarily used or expected by a printer. A circuit within the non-OEM cartridge parasitically draws power from signal lines activated by the printer and powers the non-OEM cartridge's medium delivery system. Additionally, the circuit maintains a power draw and impedance within the printer's tolerance so that the printer accommodates the non-OEM cartridge.
Claims19
A non-OEM printer cartridge for use in a printer designed to print a medium on a surface using a first medium delivery system, comprising:
- a plurality of signal lines that can be activated by the printer;
- a second medium delivery system different than the first medium delivery system;
- and
- a circuit configured to parasitically draw power from an active signal line selected from the plurality of signal lines and configured to maintain (a) a power draw that is within the printer's power draw tolerance, and (b) an impedance that is within the printer's impedance tolerance on the active signal line to allow accommodation of the cartridge by the printer as the second medium delivery system.
Dependencies are inferred from the claim text.