LIQUID EJECTING APPARATUS AND LIQUID EJECTING SYSTEM

• US 20170120578A1
• Filed: 08/31/2016
• Published: 05/04/2017
• Est. Priority Date: 10/30/2015
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: YAMADA, Tomonori, MATSUYAMA, Toru
• Granted Patent: US 9,914,296 B2
• Time in Patent Office: Days
• CPC Class Codes: B41J 2/04541 Specific driving circuit
• CPC Class Codes: B41J 2/04581 controlling heads based on piezoelectric elements
• CPC Class Codes: B41J 2/04586 controlling heads of a type not covered by groups B41J2/04575 - B41J2/04585, or of an undefined type
• CPC Class Codes: B41J 2/04588 using a specific waveform
• CPC Class Codes: B41J 2/04593 Dot-size modulation by changing the size of the drop
• CPC Class Codes: B41J 2/04596 Non-ejecting pulses
• CPC Class Codes: B41J 29/13 Cases or covers
• CPC Class Codes: B41J 29/38 Drives, motors, controls or automatic cut-off devices for the entire printing mechanism

Abstract

A liquid ejecting apparatus includes: a liquid ejecting section that ejects liquid in response to a drive signal; a drive signal generation circuit that generates the drive signal by using a second frequency band including at least a part of a first frequency band; a non-contact power transmission circuit that transmits power in a non-contact manner by using the first frequency band; and a control circuit that controls the drive signal generation circuit and the non-contact power transmission circuit, in which the control circuit controls the drive signal generation circuit and the non-contact power transmission circuit so as to exclusively perform the generation of the drive signal by the drive signal generation circuit and the power transmission by the non-contact power transmission circuit.

Claims

1. A liquid ejecting apparatus comprising:

a liquid ejecting section that ejects liquid in response to a drive signal;

a drive signal generation circuit that generates the drive signal by using a second frequency band including at least a part of a first frequency band;

a non-contact power transmission circuit that transmits power in a non-contact manner by using the first frequency band; and

a control circuit that controls the drive signal generation circuit and the non-contact power transmission circuit,

wherein the control circuit controls the drive signal generation circuit and the non-contact power transmission circuit so as to exclusively perform the generation of the drive signal by the drive signal generation circuit and the power transmission by the non-contact power transmission circuit.

2. The liquid ejecting apparatus according to claim 1,

wherein the control circuit restricts the power transmission by the non-contact power transmission circuit in a case where the drive signal generation circuit has generated the drive signal.

3. The liquid ejecting apparatus according to claim 1,

wherein the control circuit restricts the generation of the drive signal by the drive signal generation circuit in a case where the non-contact power transmission circuit has transmitted the power.

4. The liquid ejecting apparatus according to claim 1, further comprising:

a case body that surrounds the drive signal generation circuit and the non-contact power transmission circuit and includes a first surface and a second surface that faces the first surface,

wherein the drive signal generation circuit is arranged at a position closer to the first surface than to the second surface, and

wherein the non-contact power transmission circuit is arranged at a position closer to the second surface than to the first surface.

5. The liquid ejecting apparatus according to claim 1,

wherein the non-contact power transmission circuit transmits the power from an apparatus outside the liquid ejecting apparatus to the liquid ejecting apparatus.

6. The liquid ejecting apparatus according to claim 1,

wherein the non-contact power transmission circuit transmits the power from the liquid ejecting apparatus to an apparatus outside the liquid ejecting apparatus.

7. The liquid ejecting apparatus according to claim 1,

wherein the drive signal generation circuit includes an amplifier circuit using a digital amplifier.

8. The liquid ejecting apparatus according to claim 1,

wherein the second frequency band includes a frequency in a band from 1 MHz to 8 MHz.

9. The liquid ejecting apparatus according to claim 3,

wherein under the restriction, the drive signal is generated without using the first frequency band.

10. The liquid ejecting apparatus according to claim 9,

wherein under the restriction, the frequency band used for generating the drive signal is switched.

11. The liquid ejecting apparatus according to claim 9,

wherein under the restriction, the generation of the drive signal is stopped.

12. The liquid ejecting apparatus according to claim 3, comprising:

a draft mode in which dots formed by the liquid ejecting section ejecting the liquid have first resolution; and

a high-definition mode in which the dots have second resolution that is higher than the first resolution,

wherein the control circuit restricts the generation of the drive signal by the drive signal generation circuit in the draft mode and does not restrict the generation of the drive signal in the high-definition mode in a case where the non-contact power transmission circuit has transmitted the power.

13. The liquid ejecting apparatus according to claim 2,

wherein under the restriction, the power transmission is stopped.

14. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 1; and

a power supply device,

wherein the liquid ejecting apparatus includes a power receiving section, and the power supply device includes a power sending section that sends power to the power receiving section in a non-contact manner.

15. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 2; and

a power supply device,

wherein the liquid ejecting apparatus includes a power receiving section, and the power supply device includes a power sending section that sends power to the power receiving section in a non-contact manner.

16. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 3; and

a power supply device,

wherein the liquid ejecting apparatus includes a power receiving section, and the power supply device includes a power sending section that sends power to the power receiving section in a non-contact manner.

17. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 4; and

a power supply device,

wherein the liquid ejecting apparatus includes a power receiving section, and the power supply device includes a power sending section that sends power to the power receiving section in a non-contact manner.

18. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 5; and

a power supply device,

wherein the liquid ejecting apparatus includes a power receiving section, and the power supply device includes a power sending section that sends power to the power receiving section in a non-contact manner.

19. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 6; and

a power supply device,

wherein the liquid ejecting apparatus includes a power receiving section, and the power supply device includes a power sending section that sends power to the power receiving section in a non-contact manner.

20. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 1; and

an electronic device,

wherein the liquid ejecting apparatus includes a power sending section in the non-contact power transmission circuit, and the electronic device includes a power receiving section that receives power supply from the power sending section in a non-contact manner.