Method to modify a printer cartridge to function in a fax machin

Details Method to modify a printer cartridge to function in a fax machin Method to modify a printer cartridge to function in a fax machin

1993-04-06

1993-11-16

Eickholt, Eugene H.

Printing

Processes

101479, 101335, 294001, 29428, 355260, B41F 3100

Patent

active

052613267

ABSTRACT:
A method for modifying a conventional laser printer toner cartridge assembly so it may be used in a fax machine in place of more expensive cartridges specifically designed for the fax machine. The method comprises removing the cylinderical fitting stubs protruding from the toner hopper portion of the cartridge assembly by grinding or melting them off. Holes are melted in the indentations of the cartridge assembly at the location where the fax machine sensor operates. Clear, flat, thin plastic windows are attached over these holes to allow the light beam from the sensor to enter the toner hopper. An additional indentation is formed on the toner hopper portion of the cartridge assembly corresponding in location to fitting and aligning protrusions on the fax machine. This indentation is melted or pressed into the cartridge assembly casing and is made less sloppy and rough in appearance by applying a filler material over portions of the indentation. Since the holes and indentation are made by a heating process, the toner within the toner hopper portion of the cartridge assembly will not be contaminated, and since the windows are thin and flat the toner distribution paddle within the cartridge assembly does not have to be notched. So the cartridge assembly does not have to be disassembled or emptied of toner prior to modification.

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patent: 5184181 (1993-02-01), Kurando et al.
patent: 5220379 (1993-06-01), Fukuchi et al.

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