Password protected memory on replaceable components for printing devices
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United States of America Patent
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May 18, 2004
Issued Date -
N/A
app pub date -
Jan 10, 2000
filing date -
Oct 1, 1999
priority date (Note) -
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status (Latency Note)
Importance
Abstract
A printing device component having a memory tag with password protected data areas to control read and write access to the memory tag. The memory tag provides an encrypted authorization code to a printing device into which the component is installed. The printing device determines if the authorization code is valid and, if so, the printing device enables all printing device functions. Otherwise, limited functions are enabled. The memory tag utilizes encryption methods to allow only authorized user access to read from and write to selected data areas of the memory tag.
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