Liquid ejecting apparatus and liquid ejecting system

• US 10,189,247 B2
• Filed: 10/28/2016
• Issued: 01/29/2019
• 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): Ameh, Yaovi M
• Application Number:
  US15/336,948
• Publication Number:
  US 20170120579A1
• Time in Patent Office: 823 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 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, in which the drive signal generation circuit is arranged at a position closer to the first surface than to the second surface, and in which the non-contact power transmission circuit is arranged at a position closer to the second surface than to the first surface.

Claims

1. A liquid ejecting apparatus comprising:

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

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

a drive signal generation circuit that generates the drive signal by using a second frequency band including a portion of the first frequency band, the second frequency band being different from the first frequency band; and

a case body that surrounds the drive signal generation circuit and the non-contract 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.

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

a power source that transports a medium onto which the liquid ejecting section ejects the liquid; and

a liquid ejectable region in which the liquid ejecting section is able to eject the liquid,

wherein one of the drive signal generation circuit and the non-contact power transmission circuit is arranged with the power source on one of both sides with the liquid ejectable region interposed therebetween in a longitudinal direction in the case body, and the other one of the drive signal generation circuit or the non-contract power transmission circuit is arranged on the other side corresponding to an opposite side to the side of the power source with the liquid ejectable region interposed therebetween.

3. The liquid ejecting apparatus according to claim 1,

wherein the non-contact power transmission circuit is arranged at a position closer to an outer circumferential surface of the case body to the drive signal generation circuit in the case body.

4. The liquid ejecting apparatus according to claim 2,

wherein a metal frame that supports the liquid ejecting section is arranged in the case body, and the drive signal generation circuit and the non-contact power transmission circuit are arranged on mutually opposite sides with the frame interposed therebetween.

5. The liquid ejecting apparatus according to claim 4,

wherein the frame includes a first metal frame section that supports the liquid ejecting section and at least one second frame section that extends in a direction that intersects the longitudinal direction on at least one of both sides of the first frame section in the longitudinal direction, and

wherein the drive signal generation circuit and the non-contact power transmission circuit are arranged on mutually opposite sides with the second frame section interposed therebetween.

6. 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.

7. The liquid ejecting apparatus according to claim 1,

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

8. The liquid ejecting apparatus according to claim 1,

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

9. 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.

10. 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.

11. 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.

12. 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.

13. 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.

14. 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.

15. 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.

16. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 7; 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 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.

18. A liquid ejecting system comprising:

the liquid ejecting apparatus according to claim 9; 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

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.

20. 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.