Apparatus for ink cartridge of a jet printer

• US 6,213,597 B1
• Filed: 02/29/2000
• Issued: 04/10/2001
• Est. Priority Date: 02/29/2000
• Status: Expired due to Fees

• Current Assignee: Win-Yin Liu
• Original Assignee: Win-Yin Liu
• Inventors: Liu, Win-Yin
• Primary Examiner(s): Yockey, David F.
• Application Number:
  US09/515,392
• Time in Patent Office: 406 Days
• Field of Search: 347/85, 347/84, 347/86, 347/87, 346/140.1, 222/325, 222/567, 222/523, 141/18, 141/21, 141/25, 215/341, 215/346, 215/352
• US Class Current: 347/85
• CPC Class Codes: B41J 2/17503 Ink cartridges
• CPC Class Codes: B41J 2/17506 Refilling of the cartridge

Abstract

An apparatus for the ink cartridge of a jet printer, which mainly comprises an ink-storage container and a cylinder; the ink-storage container has a cylindrical body portion, of which the bottle mouth is furnished with a retaining ring and screw threads to be connected with a piston ring and a threaded cap respectively so as to store ink; one end of the cylindrical body portion is furnished with an outer body portion having a large diameter; the cylindrical body portion and the inner cylinder of the cylinder are assembled together; the piston ring of the bottle mouth is in close contact with the inner cylinder; the front end of the sealed surface of the cylinder is furnished with a tapered ink straw to be plugged and connected with a through hole of the ink cartridge; hold the outer surface of the cylinder, and then the thumb pushes the shoulder portion of the ink-storage container upwards so as to generate a negative pressure for replenishing ink into the ink cartridge.

Claims

1. An ink-replenishing apparatus for an ink cartridge of a jet printer comprising:

an ink-injection cylinder having an inner cylinder, a first end of said inner cylinder having an opening with lugs on said ink-injection cylinder on opposite sides of said inner cylinder, while a second end of said inner cylinder has a sealed surface, in a center of which is located an ink straw, a center of said ink straw having a through hole;

an ink-storage container including;

a bottle body including a cylindrical body portion and an outer body portion with a diameter larger than a diameter of the cylindrical body portion, said cylindrical body portion having a diameter less than a diameter of said inner cylinder and being mounted in said inner cylinder, the diameter of said outer body portion being approximately equal to a maximum dimension of said lugs of said ink-injection cylinder;

a shoulder portion located between said cylindrical body portion and said outer body portion;

a bottle mouth of said cylindrical body portion having a retaining ring with screw threads;

a piston ring having a retaining groove mounted together with said retaining ring, upper and lower edges of said piston ring having ring-shaped surfaces respectively such that, after said ink-storage container and said ink-injection cylinder are assembled together, said ring shaped surfaces of said piston ring closely contact said inner cylinder; and

,

a threaded cap removably mounted on said screw threads of said bottle mouth so as to hold ink in said ink-storage container when not assembled with said ink-injection cylinder.

2. The apparatus for an ink cartridge of a jet printer as claimed in claim 1, wherein the ink-injection cylinder has a connecting stem having a threaded portion disposed at the center of said sealed surface of said inner cylinder;

said connecting stem mounted with a connector having a threaded cap wherein said ink straw is located on said threaded cap and is configured to be plugged in a through hole of said ink cartridge.

3. The apparatus for an ink cartridge of a jet printer as claimed in claim 1, wherein said ink straw on said sealed surface of said inner cylinder is configured to fit a cylindrical hole of an auxiliary pad mounted on said ink cartridge.

4. An apparatus for an ink cartridge of a jet printer comprising:

a syringe having an inner cylinder connected together with an ink-storage container;

a front end of said syringe having a connecting stem mounted with an ink straw for filling ink into an ink-storage chamber of said ink cartridge; and

said syringe including two lugs thereon;

said apparatus further including;

a bottle body including a cylindrical body portion and an outer body portion with a diameter larger than a diameter of said cylindrical body portion, the diameter of said cylindrical body portion being less than a diameter of said inner cylinder so as to enable said cylindrical body portion to fit in said inner cylinder;

the diameter of said outer body portion being approximately equal to a maximum dimension of said two lugs on said syringe;

a shoulder portion located between said cylindrical body portion and said outer body portion;

an upper bottle mouth of said cylindrical body portion having a retaining ring with screw threads;

a piston ring having a retaining groove mated with said retaining ring;

upper and lower edges of an outer surface of said piston ring having ring-shaped surfaces, such that when said ink-storage container and said cylinder are assembled together, said ring-shaped surfaces contact said inner cylinder of said syringe; and

,

a threaded cap removably mounted on said screw threads of said bottle mouth of said bottle body so as to hold ink in said ink-storage container, when not assembled with said cylinder.