Electrophoretic medium container

Patent metadata

Field	Value
Publication number	US-11243187-B2
Application number	US-201716620961-A
Country	US
Kind code	B2
Filing date	Jun 28, 2017
Priority date	Jun 28, 2017
Publication date	Feb 8, 2022
Grant date	Feb 8, 2022

Abstract

The present invention addresses the problem of providing an electrophoretic medium container capable of stabilizing a liquid delivery pressure while ensuring sealing of an electrophoretic medium. In order to resolve this problem, this electrophoretic medium container is provided with a syringe part for holding an electrophoretic medium, and a sealing component for sealing one end of the syringe part, the electrophoretic medium container being characterized in that the sealing component has a sealing surface, a body part, and a groove provided between the sealing surface and the body part, wherein the sealing surface is in contact with the inner wall of the syringe part.

First claim

The invention claimed is:

1. An electrophoretic medium container comprising:
a syringe part that holds an electrophoretic medium; and
a first sealing component that seals one end of the syringe part, wherein
the first sealing component is opened on an upper side and has a U-shaped cross section, and
the first sealing component comprises:
a first sealing surface;
a first body part; and
a first groove provided between the first sealing surface and the first body part, in which the first sealing surface is in contact with an inner wall of the syringe part;

a second sealing component connected in the vertical direction with the first sealing component, wherein
the second sealing component is opened on an upper side and has a U-shaped cross section, and
the second sealing component comprises:
a second sealing surface;
a second body part; and
a second groove provided between the second sealing surface and the second body part in which the second sealing surface is in contact with the inner wall of the syringe part, wherein
 an outer diameter of the first or second sealing surface is larger than an outer diameter of another portion of the sealing component and larger than an inner diameter of the syringe part.

2. The electrophoretic medium container according to claim 1 , wherein
the first or second sealing surface has a concave-convex multistage structure along the vertical direction.

3. The electrophoretic medium container according to claim 2 , wherein
a convex portion of the multistage structure of the first or second sealing surface narrows toward a tip end.

4. The electrophoretic medium container according to claim 1 , wherein
at least one third sealing surface is provided at an uppermost portion of the first or second sealing component.

5. The electrophoretic medium container according to claim 1 , wherein
the first or second sealing surface has a flat surface or a curved surface.

6. The electrophoretic medium container according to claim 1 , wherein
the first or second sealing component has a larger expansion coefficient than the syringe part.

7. The electrophoretic medium container according to claim 1 , wherein
the first and second sealing components are connected by a rod-shaped insertion portion.

8. An electrophoretic medium container comprising:
a syringe part; and
a first sealing component that seals one end of the syringe part, wherein
the first sealing component is opened on an upper side and has a U-shaped cross section, and
the first sealing component comprises:
a first sealing surface;
a first body part; and
a first groove provided between the first sealing surface and the first body part, in which the first sealing surface is in contact with an inner wall of the syringe part;

a second sealing component connected in the vertical direction with the first sealing component, wherein
the second sealing component is opened on an upper side and has a U-shaped cross section, and
the second sealing component comprises:
a second sealing surface;
a second body part; and
a second groove provided between the second sealing surface and the second body part, in which the second sealing surface is in contact with the inner wall of the syringe part.

9. The electrophoretic medium container according to claim 8 , wherein
the first or second sealing surface has a concave-convex multistage structure along the vertical direction.

10. The electrophoretic medium container according to claim 9 , wherein
a convex portion of the multistage structure of the first or second sealing surface narrows toward a tip end.

11. The electrophoretic medium container according to claim 8 , wherein
at least one third sealing surface is provided at an uppermost portion of the first or second sealing component.

12. The electrophoretic medium container according to claim 8 , wherein
the first or second sealing surface has a flat surface or a curved surface.

13. The electrophoretic medium container according to claim 8 , wherein
the first or second sealing component has a larger expansion coefficient than the syringe part.

14. The electrophoretic medium container according to claim 8 , wherein
the first and second sealing components are connected by a rod-shaped insertion portion.

Assignees

• Hitachi High Tech Corp

Inventors

• Kawasaki Naomichi
• Kimura Ryusuke
• Aritome Katsuhiro
• Nakajima Go
• Gomi Takashi
• Yamazaki Motohiro

Classifications

• G01N27/447 Primary

  using electrophoresis · CPC title

• G01N27/44704 Primary

  Details; Accessories · CPC title

• B01L2300/044

  pierceable, e.g. films, membranes · CPC title

• B01L2200/026

  Fluid interfacing between devices or objects, e.g. connectors, inlet details · CPC title

• B01L3/523

  with means for closing or opening · CPC title