Printhead board, printhead, and printing apparatus
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United States of America Patent
Stats
-
Apr 12, 2016
Grant Date -
Sep 4, 2014
app pub date -
Feb 28, 2014
filing date -
Mar 1, 2013
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A board for a printhead mountable on a printing apparatus includes three terminals used for connection to the printing apparatus, a printing element, a driving circuit connected to the first terminal, an inspection circuit connected between the first terminal and the second terminal, and a resistance element connected between the second terminal and the third terminal. When an inspection signal is supplied from the printing apparatus to the first terminal, the inspection circuit outputs an output signal according to the inspection signal. When a control signal for performing printing is supplied from the printing apparatus to the first terminal, the driving circuit drives the printing element according to the control signal, and the inspection circuit sets the inspection circuit and the second terminal in an open state with each other.
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