Liquid jet head and liquid jet recording device

Patent metadata

Field	Value
Publication number	US-11845272-B2
Application number	US-202117486379-A
Country	US
Kind code	B2
Filing date	Sep 27, 2021
Priority date	Oct 13, 2020
Publication date	Dec 19, 2023
Grant date	Dec 19, 2023

Abstract

A liquid jet head and so on capable of enhancing the convenience while improving the performance are provided. The liquid jet head according to an embodiment of the present disclosure includes a jet section configured to jet liquid, at least one drive device which applies a drive signal having a predetermined drive waveform to the jet section to thereby cause the jet section to jet the liquid, and a waveform setting section configured to generate regular waveform configuration information for setting the drive waveform based on simplified waveform configuration information supplied from an outside of the liquid jet head. The waveform setting section converts the simplified waveform configuration information including at least one type of reference potential value set along a time axis into the regular waveform configuration information including a plurality of types of power supply potential values set for each of the reference potential values to thereby generate the regular waveform configuration information based on the simplified waveform configuration information.

First claim

What is claimed is:

1. A liquid jet head configured to jet liquid comprising:
a jet section configured to jet the liquid;
at least one drive device which applies a drive signal having a predetermined drive waveform to the jet section to thereby cause the jet section to jet the liquid; and
a waveform setting section configured to generate regular waveform configuration information for setting the drive waveform based on simplified waveform configuration information supplied from an outside of the liquid jet head, wherein
the waveform setting section converts the simplified waveform configuration information including at least one type of reference potential value set along a time axis into the regular waveform configuration information including a plurality of types of power supply potential values set for each of the reference potential values to thereby generate the regular waveform configuration information based on the simplified waveform configuration information.

2. The liquid jet head according to claim 1 , wherein
in the regular waveform configuration information, a setting frequencies of the plurality of types of power supply potential values for each of the reference potential values in a unit period are set in accordance with a ratio of allowable consumption current values in respective power supply lines corresponding to the respective power supply potential values.

3. The liquid jet head according to claim 2 , wherein
the setting frequencies of the plurality of types of power supply potential values for each of the reference potential values in the unit period are made equivalent to each other.

4. The liquid jet head according to claim 3 , wherein
in the unit period, the plurality of types of power supply potential values for each of the reference potential values are set so as to take turns in a predetermined order.

5. The liquid jet head according to claim 1 , wherein
the simplified waveform configuration information includes:
reference potential value information in which arbitrary reference potential values selected and set from the at least one type of reference potential value are arranged side by side along the time axis, and
reference potential period information representing periods for each of the arbitrary reference potential values in the reference potential value information,

the regular waveform configuration information includes:
power supply selection information which is set for each of the arbitrary reference potential values, and is configured to select one type of power supply potential value in the plurality of types of power supply potential values,
power supply potential value information in which the one type of power supply potential value selected by the power supply selection information is arranged side by side along the time axis, and
power supply potential period information representing a period for each of the one type of power supply potential value in the power supply potential value information, and

the drive waveform in the drive signal is set using the power supply potential value information and the power supply potential period information.

6. The liquid jet head according to claim 1 , wherein
information representing an intermediate potential value between a minimum value and a maximum value of the power supply potential values set in the drive waveform is additionally set in the regular waveform configuration information, and
the information representing the intermediate potential value is arranged not to be included in the simplified waveform configuration information.

7. The liquid jet head according to claim 1 , wherein
the waveform setting section performs an error notification to the outside of the liquid jet head in case that the waveform setting section judges that the regular waveform configuration information becomes inappropriate when generating the regular waveform configuration information based on the simplified waveform configuration information.

8. The liquid jet head according to claim 1 , wherein
an amount of data in the simplified waveform configuration information is made smaller than an amount of data in the regular waveform configuration information.

9. The liquid jet head according to claim 1 , further comprising:
a plurality of drive boards each having the at least one drive device;
a control switch section disposed between the waveform setting section and the plurality of drive boards;
an external control line in which first control communication between the outside of the liquid jet head and the waveform setting section is performed;
an internal control line in which second control communication between the waveform setting section and the control switch section is performed; and
a plurality of drive control lines in which third control communication is individually performed between the control switch section and the drive device in each of the plurality of drive boards, wherein
the waveform setting section generates the regular waveform configuration information based on the simplified waveform configuration information transmitted from the outside of the liquid jet head using the first control communication, and
the control switch section performs control switch between a transmission control action and a blocking control action when transmitting the regular waveform configuration information, which is transmitted from the waveform setting section using the second control communication, to the drive devices using the third control communication, wherein in the transmission control action, the regular waveform configuration information is transmitted in parallel to the drive devices in at least one drive board in the plurality of drive boards using the third control communication on at least one drive control line in the plurality of drive control lines, and in the blocking control action, the transmission of the regular waveform configuration information using the third control communication is blocked with respect to all of the plurality of drive control lines.

10. A liquid jet recording device comprising the liquid jet head according to claim 1 .

Assignees

• Sii Printek Inc

Inventors

• Yoshida Kensuke

Classifications

• B41J2/04588 Primary

  using a specific waveform · CPC title

• B41J2/04581 Primary

  controlling heads based on piezoelectric elements · CPC title

• B41J2/0459

  Height of the driving signal being adjusted · CPC title