Firing pulse duration control
AssigneeSilverbrook Research Pty Ltd
InventorsKia Silverbrook, Simon Robert Walmsley
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Abstract
This invention concerns the control of firing pulse duration in a printhead, for a printer, such as a high performance color printer. The invention, in particular concerns a control system and a method. The printer may use, for instance, a pagewidth drop-on-demand inkjet printhead. The system and method involve a first input port to receive a signal indicative of the voltage available. A second input port to receive a signal indicative of the temperature of the printhead in the printer. A programmable pulse duration table, indexed by signals received at the first and second input ports, to generate control signals that represent predetermined durations for a firing pulse. And an output port to transmit the control signals.
Claims19
A firing pulse duration control system for a printer, comprising:
- a first input port to receive a signal indicative of the voltage available;
- a programmable, updatable pulse duration table, indexed by signals received at the first input port, to generate control signals that represent predetermined durations for a firing pulse;
- and
- an output port to transmit the control signals.
In a firing pulse duration control system for a printer, comprising:
- a first input port;
- a programmable, updatable pulse duration table;
- and
- an output port;
- a method of generating a firing pulse duration control signal, comprising the steps of:
- receiving a first signal indicative of the voltage available;
- indexing the programmable, updatable pulse duration table by the first signal to generate control signals that represent predetermined durations for a firing pulse;
- and
- transmitting the control signals.
Dependencies are inferred from the claim text.