Methods and apparatus for a high resolution inkjet fire pulse generator
First Claim
1. An apparatus for generating a fire pulse comprising:
- a first input adapted to receive a first control signal;
a second input adapted to receive a second control signal;
a first fixed current source coupled to and controlled by the first input;
a second fixed current source coupled to and controlled by the second input; and
an output terminal coupled to the first fixed current source and the second fixed current source.
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Accused Products
Abstract
The invention provides methods, systems, and drivers for controlling an inkjet printing system. The driver may include logic including a processor, memory coupled to the logic, and a fire pulse generator circuit coupled to the logic. The fire pulse generator may include a connector to facilitate coupling the driver to a print head. The fire pulse generator circuit may also include a fixed current source circuit adapted to generate a fire pulse with a constant slew rate that facilitates easy adjustment of ink drop size. The logic is adapted to receive an image and to convert the image to an image data file. The image data file is adapted to be used by the driver to trigger the print head to deposit ink into pixel wells on a substrate as the substrate is moved in a print direction. Numerous other aspects are disclosed.
122 Citations
24 Claims
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1. An apparatus for generating a fire pulse comprising:
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a first input adapted to receive a first control signal;
a second input adapted to receive a second control signal;
a first fixed current source coupled to and controlled by the first input;
a second fixed current source coupled to and controlled by the second input; and
an output terminal coupled to the first fixed current source and the second fixed current source. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system for generating a fire pulse comprising:
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logic including a processor;
a memory coupled to the logic; and
a fire pulse generator circuit coupled to the logic and including;
a first input adapted to receive a first control signal from the logic;
a second input adapted to receive a second control signal from the logic;
a first fixed current source coupled to and controlled by the first input;
a second fixed current source coupled to and controlled by the second input; and
an output terminal coupled to the first fixed current source and the second fixed current source. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A method of generating a fire pulse comprising:
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receiving a first control signal at a first input;
receiving a second control signal at a second input;
controlling a first fixed current source coupled to the first input in response to the first control signal;
controlling a second fixed current source coupled to the second input in response to the second control signal; and
outputting a fire pulse to an output terminal coupled to the first fixed current source and the second fixed current source. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24)
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Specification