Method and apparatus for firing ink from a plurality of nozzles on a printhead
First Claim
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1. An inkjet printing system for firing ink from a plurality of nozzles on a printhead, the system comprising:
- at least one shift register for accepting print data serially;
a transfer register for receiving the print data from the shift register in parallel; and
nozzle drive circuitry;
the system being configured such that the nozzle drive circuitry causes ink to be expelled from the nozzles in accordance with the data in the transfer register, whilst the at least one shift register receives print data to subsequently be printed.
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Abstract
An inkjet print system has a shift register for receiving serial print data. The print data is transferred, in a parallel manner, to a transfer register. Nozzles of the inkjet system are fired based on the contents of the transfer register. The serial register receives the next round of print data while the nozzles are being fired.
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Citations
9 Claims
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1. An inkjet printing system for firing ink from a plurality of nozzles on a printhead, the system comprising:
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at least one shift register for accepting print data serially;
a transfer register for receiving the print data from the shift register in parallel; and
nozzle drive circuitry;
the system being configured such that the nozzle drive circuitry causes ink to be expelled from the nozzles in accordance with the data in the transfer register, whilst the at least one shift register receives print data to subsequently be printed. - View Dependent Claims (2, 3, 4)
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5. A method for firing ink from a plurality of nozzles, the method comprising the steps of:
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loading a current set of print data into a shift register;
transferring the print data to a transfer register in response to a transfer signal; and
driving the nozzles based on the print data in the transfer register.
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6. An inkjet printhead including:
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a plurality of nozzles for firing ink;
a shift register for receiving serial print data;
a transfer register for receiving the print data from the shift register in parallel; and
nozzle drive circuitry for causing firing of the nozzles based on the print data in the transfer register. - View Dependent Claims (7, 8, 9)
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Specification