Driving circuit, printed wiring board, and print head with clock inverting circuits
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United States of America Patent
Stats
-
Mar 4, 2003
Grant Date -
Jul 26, 2001
app pub date -
Jan 19, 2001
filing date -
Jan 24, 2000
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A print head includes a driving circuit having a cascaded series of driver integrated circuits mounted on a printed wiring board. Differential clock signals are supplied to the driver integrated circuits to synchronize the transfer of print data through the cascaded series. Even-numbered driver integrated circuits and odd-numbered driver integrated circuits are connected differently to the clock signal lines, but the even-numbered (or odd-numbered) driver integrated circuits generate an inverted internal clock signal, thereby compensating for the difference. This enables the clock signal lines to be mutually adjacent and to have a weaving layout that yields improved noise immunity.
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Cited Art Landscape
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