Liquid ejecting apparatus and liquid ejecting system

• US 9,956,766 B2
• Filed: 10/28/2016
• Issued: 05/01/2018
• 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
• Primary Examiner(s): Luu, Matthew
• Assistant Examiner(s): MCMILLION, TRACEY M
• Application Number:
  US15/336,952
• Publication Number:
  US 20170120580A1
• Time in Patent Office: 550 Days
• Field of Search: None
• CPC Class Codes: B41J 2/04541 Specific driving circuit
• CPC Class Codes: B41J 2/04548 Details of power line section of control circuit
• CPC Class Codes: B41J 2/04581 controlling heads based on piezoelectric elements
• 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 29/02 Framework
• 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 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.

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 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.

2. 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.

3. 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.

4. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 2; 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.

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. 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.

7. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 5; 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.

8. 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.

9. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 8; 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.

10. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 8; 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.

11. The liquid ejecting apparatus according to claim 1,

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

12. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 11; 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.

13. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 11; 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.

14. 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.

15. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 14; 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 14; 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.

17. The liquid ejecting apparatus according to claim 1,

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

18. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 17; 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 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.

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.