LIQUID EJECTING APPARATUS

• US 20150202875A1
• Filed: 08/09/2013
• Published: 07/23/2015
• Est. Priority Date: 08/17/2012
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Watanabe, Shunsuke, Fukuzawa, Yuma, Enomoto, Katsumi, Miyata, Yoshinao, Oguchi, Satoshi, Akahane, Fujio, Okui, Hiroaki
• Granted Patent: US 9,144,980 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: B41J 2/055 Devices for absorbing or preventing back-pressure
• CPC Class Codes: B41J 2/14233 of film type, deformed by bending and disposed on a diaphragm
• CPC Class Codes: B41J 2/1606 Coating the nozzle area or the ink chamber
• CPC Class Codes: B41J 2/16535 using wiping constructions B41J2/16552 takes precedence
• CPC Class Codes: B41J 2/16538 with brushes or wiper blades perpendicular to the nozzle plate
• CPC Class Codes: B41J 2/16552 using cleaning fluids
• CPC Class Codes: B41J 2002/14241 having a cover around the piezoelectric thin film element
• CPC Class Codes: B41J 2002/14362 Assembling elements of heads
• CPC Class Codes: B41J 2002/14419 Manifold

Abstract

A wiper member 12 that wipes an anchoring plate exposed-surface 17b located on the opposite side of the head unit 16 of the anchoring plate 17 and the nozzle surface 22a. When an angle of contact between the nozzle surface 22a and the liquid is taken as θn, an angle of contact between the anchoring plate exposed-surface 17b and the liquid is taken as θs, and an angle of contact between the wiper member 12 and the liquid is taken as θw, the relationship θn>θs>θw>90° is fulfilled.

Claims

1. A liquid ejecting apparatus comprising:

a liquid ejecting head unit capable of ejecting a liquid from a nozzle provided in a nozzle surface of a nozzle formation member;

an anchoring plate that is anchored to the liquid ejecting head unit and that is provided with an opening region that exposes the nozzle surface; and

a wiper member that wipes the nozzle surface and an anchoring plate exposed-surface located on an opposite side of the anchoring plate to the liquid ejecting head unit,

wherein when an angle of contact between the nozzle surface and the liquid is taken as θ

n, an angle of contact between the anchoring plate exposed-surface and the liquid is taken as θ

s, and an angle of contact between the wiper member and the liquid is taken as θ

w, the relationship θ

n>

θ

s>

θ

w>

90°

is fulfilled.

2. The liquid ejecting apparatus according to claim 1,

wherein a gap is provided between an edge of the opening region of the anchoring plate and the nozzle formation member;

and

the gap is filled with a filler.

3. The liquid ejecting apparatus according to claim 2,

wherein when an angle of contact between the filler and the liquid is taken as θ

f, the relationship θ

n>

θ

f>

θ

s is fulfilled.

4. The liquid ejecting apparatus according to claim 1,

wherein the wiper member is formed of an elastic member.