Liquid Discharge Apparatus, Head Unit and Mist Collector

Patent metadata

Field	Value
Publication number	US-2022040986-A1
Application number	US-202117360600-A
Country	US
Kind code	A1
Filing date	Jun 28, 2021
Priority date	Aug 5, 2020
Publication date	Feb 10, 2022
Grant date	—

Abstract

There is provided a liquid discharge apparatus including: a head, a fixing device and a mist collector configured to collect a mist of a liquid. The mist collector and the fixing device are arranged side by side in this order in a first direction. The mist collector is provided with an air channel having a suction port and an exhaust port. The air channel has: a first part and a second part connected to an other end of the first part. The exhaust port is opened, in the second part, toward any one of directions which are: a direction including a direction opposite to the first direction as a directional component thereof, a third direction orthogonal to the first direction and a second direction, and a direction opposite to the third direction.

First claim

What is claimed is:

1 . A liquid discharge apparatus comprising:
a head including a discharge surface in which a nozzle for discharging a liquid toward a medium is opened; a fixing device configured to fix the liquid on the medium; and a mist collector configured to collect a mist of the liquid, the mist collector and the fixing device being arranged side by side in this order in a first direction parallel to the discharge surface, wherein the mist collector includes an air channel including a suction port via which an air is sucked into the mist collector, and an exhaust port via which the air is exhausted from the mist collector, wherein the air channel includes:
a first part in which the suction port is arranged, which is located between the head and the fixing device in the first direction, which includes one end and the other end, which extends in a second direction orthogonal to the discharge surface and oriented from the one end toward the other end, and in which the one end is closer to the discharge surface than the other end in the second direction; and
a second part connected to the other end of the first part; and
wherein the exhaust port is opened, in the second part, toward any one of directions which are: a direction including a direction opposite to the first direction as a directional component thereof, a third direction orthogonal to both the first direction and the second direction, and a direction opposite to the third direction.

2 . The liquid discharge apparatus according to claim 1 , wherein the exhaust port is opened toward the direction including the direction opposite to the first direction as the directional component thereof.

3 . The liquid discharge apparatus according to claim 1 , wherein the fixing device includes: a generating source configured to generate an energy, a case accommodating the generating source, and an inlet port via which the air is allowed to flow from outside of the case to inside of the case therethrough; and
wherein the inlet port is arranged in an area, of the fixing device, which does not overlap with the head in both the first direction and the second direction.

4 . The liquid discharge apparatus according to claim 3 , wherein the fixing device includes a fan configured to allow the air to flow from the outside of the case to the inside of the case via the inlet port,
wherein the mist collector includes another fan configured to exhaust, from the exhaust port, the air sucked via the suction port, and wherein a rotational shaft of the fan and the rotational shaft of the another fan are not parallel to each other.

5 . The liquid discharge apparatus according to claim 3 , wherein at least a part of the exhaust port is located, in the second direction, away from the discharge surface than the inlet port.

6 . The liquid discharge apparatus according to claim 1 , further comprising a casing accommodating the head, the fixing device and the mist collector therein, and including a lid which is openable/closable at an upper part of the casing; and
wherein the mist collector includes: a filter covering the exhaust port, and a holder holding the filter and configured to be detachable and attachable in an up-down direction.

7 . The liquid discharge apparatus according to claim 1 , further comprising a casing accommodating the head, the fixing device and the mist collector therein, and including an intake port via which an outside air is taken into the casing, and
wherein the head includes the discharge surface, and an end surface on a side opposite to the discharge surface in the second direction, and wherein the intake port is located farther away from the discharge surface than the end surface in the second direction.

8 . The liquid discharge apparatus according to claim 7 , wherein the casing includes a first wall in which the intake port is arranged, and a second wall located on an opposite side to the first wall, with the head, the fixing device and the mist collector being interposed therebetween,
wherein the second wall includes a release port configured to allow the air to be released to outside of the casing, and wherein the casing includes a fan configured to release the air via the release port.

9 . The liquid discharge apparatus according to claim 1 , further comprising a conveyor configured to convey the medium,
wherein the suction port is positioned to be opposable to the medium conveyed by the conveyor.

10 . The liquid discharge apparatus according to claim 1 , wherein the liquid is cured in a case that an energy is applied to the liquid, and
wherein the fixing device is configured to apply the energy to the liquid on the medium.

11 . A head unit comprising:
a head including a discharge surface, a nozzle via which a liquid is discharged toward a medium being formed in the discharge surface; a fixing device configured to fix the liquid on the medium; and a mist collector configured to collect a mist of the liquid, the mist collector and the fixing device being arranged side by side in this order in a first direction parallel to the discharge surface, wherein the mist collector includes an air channel including a suction port via which air is sucked into the mist collector, and an exhaust port via which the air is exhausted from the mist collector; the air channel includes:
a first part in which the suction port is arranged, which is located between the head and the fixing device in the first direction, which includes one end and the other end, which extends in a second direction orthogonal to the discharge surface and oriented from the one end toward the other end, and in which the one end is closer to the discharge surface than the other end in the second direction, and
a second part connected to the other end of the first part; and
wherein the exhaust port is opened, in the second part, in any one of directions which are: a direction including a direction opposite to the first direction as a directional component thereof, a third direction orthogonal to both the first direction and the second direction, and a direction opposite to the third direction.

12 . The liquid discharge apparatus according to claim 1 , wherein the mist collector includes a filter arranged inside the air channel and including a filter surface,
wherein the air channel includes a corner part arranged between the suction port and the exhaust port, a vertical part extending from the suction port to the corner part in the second direction, and a horizontal part extending from the corner part to the exhaust port in the first direction, wherein the corner part includes a facing surface crossing the first direction, and wherein the filter surface faces the facing surface, includes a first end which is close to the suction port in the second direction and a second end which is far from the suction port in the second direction, the second end being closer to the facing surface than the first end in the first direction.

13 . The liquid discharge apparatus according to claim 12 , wherein the filter has a shape of a rectangular parallelepiped.

14 . The liquid discharge apparatus according to claim 12 , wherein the first end of the filter is arranged in the second part.

15 . The liquid discharge apparatus according to claim 12 , further comprising a carriage which has the head mounted thereon and which is configured to move in the first direction and a direction opposite to the first direction in a reciprocating manner,
wherein in a case that the carriage moves in the first direction, the head discharges the liquid onto the medium.

Assignees

• Brother Ind Ltd

Inventors

• Kobayashi Akihiro
• Takeda Kengo
• Nishimoto Takahiro

Classifications

• B41J2/475

  for heating selectively {by radiation or ultrasonic waves} · CPC title

• B41J29/38

  Drives, motors, controls or automatic cut-off devices for the entire printing mechanism · CPC title

• B41J2/1714 Primary

  Conditioning of the outside of ink supply systems, e.g. inkjet collector cleaning, ink mist removal (B41J2/08, B41J2/16517, B41J2/18 take precedence) · CPC title

• B41J29/377

  Cooling or ventilating arrangements · CPC title

• B41J29/02

  Framework · CPC title