Ink container refurbishment method

• US 6,170,937 B1
• Filed: 03/04/1998
• Issued: 01/09/2001
• Est. Priority Date: 01/21/1997
• Status: Expired due to Term

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Company (HP Inc.)
• Inventors: Bullock, Michael L, Dewing, Peter A, Childers, Winthrop D
• Primary Examiner(s): Le, N.
• Assistant Examiner(s): NGHIEM, MICHAEL P
• Application Number:
  US09/034,719
• Time in Patent Office: 1,042 Days
• Field of Search: 347/85, 347/86, 347/87, 347/7
• US Class Current: 347/85
• CPC Class Codes: B41J 2/16538 with brushes or wiper blades perpendicular to the nozzle plate
• CPC Class Codes: B41J 2/17506 Refilling of the cartridge
• CPC Class Codes: B41J 2/1752 Mounting within the printer
• CPC Class Codes: B41J 2/17523 Ink connection
• CPC Class Codes: B41J 2/17546 electronically
• CPC Class Codes: B41J 2/1755 mechanically
• CPC Class Codes: B41J 2/17553 Outer structure
• CPC Class Codes: B41J 2002/17569 based on the amount printed or to be printed
• CPC Class Codes: B41J 2002/17573 using optical means for ink level indication
• CPC Class Codes: B41J 2002/17576 using a floater for ink level indication
• CPC Class Codes: B41J 25/34 Bodily-changeable print heads or carriages

Abstract

Alternative methods for refurbishing a single-use ink delivery container for a printing system are described. The refurbishing methods include electrical and mechanical reconfiguration or replacement of original elements on the ink delivery container. Each method utilizes an existing ink fluid outlet, electrical connector and an information storage device on the ink delivery container.

Claims

1. A method for refilling a printing system ink container that previously exhibited a filled ink condition and now exhibits an at least partially depleted ink condition, the ink container having a housing, an ink reservoir located within the housing and having a fluid outlet and a fill port, the fill port being sealed with an internal plug, a cap having a cavity with two opposing side walls mounted to the housing and enclosing the fill port, and a memory device having contacts mounted to one of the opposing side walls in the cavity for communicating information concerning characteristics of the ink in the ink reservoir and the at least partially depleted ink condition to the printing system, the method comprising the steps of:

(a) creating an opening in the fill port;

(b) refilling the ink reservoir through the fill port;

(c) resealing the opening in the fill port;

(d) refurbishing the memory device indicating the at least partially depleted ink condition, such that the memory device provides enabling information to the printing system indicating that the ink reservoir of the ink container has an increased amount of ink so as to enable the printing system to operate.

2. The method of claim 1 wherein the fill port has a passage which contains the internal plug and step (a) comprises inserting a tool into the passage, threading the tool into the plug and pulling the plug from the passage.

3. The method of claim 1 wherein the step (a) comprises creating a hole in the sealed fill port with hot probe.

4. The method of claim 1 wherein step (d) comprises:

erasing data in the memory device such that the data no longer indicates the at least partially depleted ink condition of the ink reservoir of the ink container and the memory device no longer provides enabling information to the printing system; and

reprogramming the data of the memory device such that the data now indicates that the ink reservoir of the ink container has an increased amount of ink and the memory device can now provide enabling information to the printing system.

5. The method of claim 1 wherein the memory device is bonded to one of the opposing side walls in the cavity;

and wherein step (d) comprises;

removing the memory device from the cavity by prying the memory device from the one of the opposing side walls; and

securing a plurality of contacts and a second memory device to said one of the opposing walls, the plurality of contacts being electrically coupled to the second memory device, the second memory device indicating that the ink reservoir of the ink container has an increased amount of ink so as to provide enabling information to the printing system.

6. The method of claim 1, wherein step (d) comprises:

providing a plurality of second contacts bonded to one of the opposing side walls in the cavity, the second contacts supplanting the contacts of the memory device; and

providing a signal source that is electrically coupled to the plurality of second contacts, the signal source supplanting the memory device and producing signals that are indicative of an increased amount of ink in the ink reservoir.

7. The method of claim 1 wherein step (d) comprises:

severing the memory device from communication with the contacts; and

connecting an electrical device to the contacts of the memory device for supplanting the memory device and providing enabling information to the printing system indicative of an increased amount of ink in the ink reservoir.

8. The method of claim 1 wherein step (d) comprises placing a second memory device on top of the memory device to supplant the memory device, the second memory device providing enabling information to the printing system indicative of an increased amount of ink in the ink reservoir.

9. The method of claim 10 wherein the memory device and the printing system exchange data in serial fashion over a single data line relative to a reference line, and wherein step (d) comprises:

disabling the memory device such that the memory device may no longer exchange data with the printing system indicative of the at least partially depleted ink condition of the ink reservoir; and

providing an electrical device to supplant the memory device which, when connected to the printing system, provides data in a serial fashion on the single data line of the printing system relative to the reference line indicative of an increased amount of ink in the ink reservoir.

10. The method of claim 1 wherein at least one adhesive film provides structural support between the cap and the housing, and wherein prior to step (a), the method includes the step of:

disabling the structural support provided by the at least one adhesive film and removing the cap from the housing to expose the fill port.

11. The method of claim 10, wherein the structural support provided by the at least one adhesive film is disabled by severing the adhesive film.

12. The method of claim 10 wherein after step (d), the method includes the step of:

reassembling the cap to the housing.

13. A method for refilling a previously used ink container exhibiting an at least partially depleted ink condition, the ink container being releasably insertable into an ink jet printing system, the ink container including a reservoir portion surrounded by an outer housing, the ink container including a first cap portion that is attached to the outer housing, the first cap portion including a first information storage device mounted thereon that provides information to the printing system indicative of an at least partially depleted volume of deliverable ink in the reservoir, the at least partially depleted volume of ink is less than an initial volume of ink present in the ink reservoir, the method comprising the steps of:

removing the first cap portion from the housing;

disabling the first information storage device so that it no longer provides data to the printing system indicating the at least partially depleted ink condition of the ink reservoir of the ink container;

creating an opening in the reservoir portion;

refilling the ink reservoir through the opening;

resealing the opening in the reservoir portion; and

attaching a second cap portion to the housing, the second cap portion including a second information storage device and a plurality of contacts that provide electrical coupling between the printing system and the second information storage device to allow the second information storage device to provide data to the printing system indicative of an increased volume of ink in the ink container when the ink container is releasably inserted into the printing system.

14. The method of claim 13, wherein the first information storage device is disabled by erasing the data indicating the at least partially depleted ink condition, and wherein the second information storage device is the first information storage device after being reprogrammed to indicate an increased volume of ink in the ink reservoir.

15. The method of claim 13, wherein the second information storage device is a replacement electrical circuit for the first information storage device.

16. The method of claim 13, wherein the second cap portion and the first cap portion are the same.

17. The method of claim 13, wherein the second cap portion includes a cavity and a leading edge defined relative to a direction of insertion of the ink container into the printing system, and wherein the cavity is accessible from the leading edge of the second cap portion and the plurality of contacts are disposed within the cavity adjacent to the leading edge.