Storing printer density control parameters in cartridge memory
First Claim
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1. A replacement toner cartridge for a printer having an existing print density control operating point table, comprising:
- a memory device, the memory device storing data including an updated print density control operating point table from a programming host; and
a controller coupled to the memory device and configured to perform a parity check on the data stored in the memory device and, when the replacement cartridge is installed in the printer, to send data including the updated print density control operating point table from the memory device to the printer depending upon the parity check wherein, when received by the printer, the updated print density control operating point table overwrites the existing print density control operating point table in the printer.
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Abstract
Data may be obtained in the form of a printer control density table from a memory within a replacement toner cartridge. The cartridge may include parity bits to ensure the accuracy of the data.
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Citations
12 Claims
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1. A replacement toner cartridge for a printer having an existing print density control operating point table, comprising:
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a memory device, the memory device storing data including an updated print density control operating point table from a programming host; and a controller coupled to the memory device and configured to perform a parity check on the data stored in the memory device and, when the replacement cartridge is installed in the printer, to send data including the updated print density control operating point table from the memory device to the printer depending upon the parity check wherein, when received by the printer, the updated print density control operating point table overwrites the existing print density control operating point table in the printer. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of confirming and sending data from a memory device in a replacement toner cartridge installed in a printer having an existing print density operating point control table, comprising the steps of:
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sending a read command to the memory device in the replacement toner cartridge, the memory device having data including an updated print density operating point control table previously programmed by a programming host; checking parity of the previously programmed data at the toner cartridge; and transmitting the data to a printer based on the parity check, the data being transmitted with an error message if the parity check fails, and if no error message is received by the printer, overwriting the existing print density operating point control table in the printer with the updated print density operating point control table. - View Dependent Claims (9, 10, 11, 12)
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Specification