Short delay phased firing to reduce crosstalk in an inkjet printing device
AssigneeHitachi Printing Solutions America, Inc.
InventorsStuart D. Howkins, Charles A. Willus, Osamu Machida
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Abstract
An inkjet printing system includes an array of transducers to eject ink, the array including the transducers divided into interspersed sets. A controller controls a firing sequence of the array of transducers. One set of transducers is fired, and after a delay, another set of transducers is fired and then, after further delays, each set is fired in turn. The delays are selected based on known response characteristics of the array of transducers to minimize the average crosstalk for all of the sets.
Claims35
An inkjet printing system, comprising:
- an array of transducers to eject ink, the array including even transducers and odd transducers;
- and
- a controller to control a firing sequence of the array of transducers, wherein an even set of the even transducers is fired, and after a delay, an odd set of the odd transducers is fired, the delay being selected based on known crosstalk and frequency response characteristics of the array of transducers to minimize crosstalk between the even set and the odd set.
An inkjet printing system, comprising:
- an array of transducers to eject ink, the array including transducers in the set ∑ i = 1 i = n A ( i )
- where i and n are integers,
- a controller to control a firing sequence of the array of transducers, wherein a first set of the transducers is fired, and after a delay, a second set of the transducers is fired, the delay being selected based on known frequency response characteristics of the array of transducers to minimize negative crosstalk between the first set and the second set.
A method of determining delays in an inkjet printing system, comprising:
- measuring an amount of crosstalk received by a first set of transducers, within a predetermined time range, relative to a time at which a second set of transducers is fired;
- and
- selecting a delay to minimize the amount of the crosstalk and allow each of the first set and the second set of the transducers to operate at a predetermined maximum firing frequency.
An article comprising a storage medium having stored thereon instructions that when executed by a machine result in the following:
- measuring an amount of crosstalk received by a first set of transducers, within a predetermined time range, relative to a time at which a second set of transducers is fired;
- and
- selecting a delay to minimize the amount of the crosstalk and allow each of the first set and the second set of the transducers to operate at a predetermined maximum firing frequency.
A method of determining a delay for a channel of an inkjet printer, comprising:
- determining a set of channels to be fired within a predetermined time period;
- acquiring predetermined crosstalk data for each of the channels to be fired;
- and
- selecting a set of delay values to minimize crosstalk between the set of the channels.
An article comprising a storage medium having stored thereon instructions that when executed by a machine result in the following:
- determining a set of channels to be fired within a predetermined time period;
- acquiring predetermined crosstalk data for each of the channels to be fired;
- and
- selecting a set of delay values to minimize crosstalk between the set of the channels.
An inkjet printing system, comprising:
- an array of transducers;
- a memory device to store crosstalk data for each of the transducers in the array;
- a processor to determine and select, in real time, a set of delay values to minimize crosstalk between a set of the transducers to be fired within a predetermined time period;
- and
- a controller to fire the set of the transducers and implement the set of delay values.
Dependencies are inferred from the claim text.