Secure resource tracker

• US 7,643,948 B2
• Filed: 10/18/2007
• Issued: 01/05/2010
• Est. Priority Date: 10/18/2007
• Status: Active Grant

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Cohen, Eytan, McDonnell, Edward, Uzan, Moshe, Ripenbein, Mark, Balinsky, Helen
• Primary Examiner(s): Le; John H
• Application Number:
  US11/975,193
• Publication Number:
  US 20090100946A1
• Time in Patent Office: 810 Days
• Field of Search: 702/50, 702/106, 702/160, 702/178, 702/188, 347/6, 347/84, 347/85, 347/86, 347/7, 711/170, 705/50, 340/572.1, 710/8
• US Class Current: 702/50
• CPC Class Codes: B41J 29/38 Drives, motors, controls or automatic cut-off devices for the entire printing mechanism

Abstract

A system for tracking resource parameters includes a resource having an associated memory tag; a parameter sensing element sensing a parameter of the resource; and a memory tag reader/writer. The system is configured to store information gathered from the parameter sensing element on the memory tag.

Claims

1. A system for tracking resource parameters, said system comprising:

a container of ink having an associated memory tag;

a parameter sensing element sensing a weight of said container of ink; and

a memory tag reader/writer;

in which said system is configured to identify said container of ink based on said memory tag;

in which said system is configured to store information gathered from said parameter sensing element on said memory tag; and

in which said system is configured to verify a strictly decreasing weight of said container of ink for detecting use of an alternative-brand ink.

2. The system of claim 1, wherein said parameter sensing element is further configured to sense one or more resource parameters selected from the group of:

temperature, voltage, composition, pressure, humidity, viscosity, changes in concentration, float level, date and time, and combinations thereof.

3. The system of claim 1, further comprising a computing element communicatively coupled with said parameter sensing element and memory tag reader/writer, wherein said computing element is configured to perform an action if a combined effect of changes in said resource parameters falls outside of a specified threshold.

4. The system of claim 3, wherein said action comprises voiding a warranty.

5. The system of claim 3, wherein said action comprises display of a warning, ceasing operation, alerting a manufacturer or user, or logging data.

6. The system of claim 3, wherein said computing element is associated with a printing system.

7. The system of claim 1, wherein said memory tag is integrally attached to said resource.

8. The system of claim 1, further comprising a resource positioning element configured to position said resource such that said memory tag is positioned adjacent said memory tag reader/writer.

9. The system of claim 1, wherein said memory tag comprises Write Once Read Many memory.

10. The system of claim 1, wherein said memory tag is protected by encryption.

11. The system of claim 1, wherein said resource comprises a laser printer toner cartridge.

12. The system of claim 1, wherein said resource comprises a laser printer fuser assembly.

13. A method of monitoring ink usage in a printing system, said method comprising:

placing an ink container in a resource positioning element wherein said resource positioning element is configured to align a memory tag secured to said ink container and a memory tag reader/writer with a slopping bottom member of said resource positioning element so that said resource will slide to align said memory tag with said memory tag reader/writer; and

recording changes in a weight of said ink container on said memory tag secured to said container.

14. The method of claim 13, wherein said resource positioning element comprises a weight sensing element.

15. The method of claim 13, further comprising:

validating an ink consumption sequence on said memory tag; and

updating said ink consumption sequence with said current weight.

16. The method of claim 15, wherein a failure or inability to perform said step of validating an ink consumption sequence results in an additional step of creating an new ink consumption sequence if the current weight of said ink container equals an original factory weight of said ink container or issuing an alert otherwise.