Image-forming device having consumable component with internal fuse
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United States of America Patent
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-
Mar 2, 2004
Grant Date -
Nov 7, 2002
app pub date -
May 1, 2002
filing date -
May 2, 2001
priority date (Note) -
In Force
status (Latency Note)
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Abstract
A printer uses a consumable component having an internal fuse that is blown when the consumable component is installed. In one aspect of the invention, the consumable component includes a resistor connected in series with the fuse. Before the fuse is blown, the resistance value of the resistor is checked to make sure that the correct type of consumable component has been installed. In another aspect of the invention, if the fuse fails to blow on the first attempt, this is recorded in a memory and a second attempt is made later, the consumable component being used in the meantime. In still another aspect of the invention, the consumable component includes a resistor or thermistor connected in parallel with the fuse, enabling a consumable component with a blown fuse to be distinguished from a consumable component that is not installed.
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Cited Art Landscape
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