Print system, ink jet printer and ink cartridge
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United States of America Patent
Stats
-
Dec 24, 2002
Grant Date -
N/A
app pub date -
Aug 31, 2000
filing date -
Aug 31, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ink jet printer has an ink jet record head, an ink cartridge for supplying ink to the ink jet record head, the ink cartridge having a semiconductor storage system storing at least the data defining the effectively usable period since the ink cartridge was placed in the printer, and a control system consisting of a CPU, RAM, and ROM for controlling the ink jet record head in response to print data. The control system calculates the effectively usable period based on the elapsed time since the ink cartridge was placed in the printer and the effectively usable a period and updates the effectively usable period stored in the storage system.
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