[특허]Method and system for estimating toner remaining in a cartridge

Method and system for estimating toner remaining in a cartridge 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G03G-015/08 G03G-015/00
출원번호	US-0606724 (2006-11-30)
등록번호	US-8897658 (2014-11-25)
발명자 / 주소	Kendall, David R.
출원인 / 주소	Hewlett-Packard Development Company, L.P.
인용정보	피인용 횟수 : 0 인용 특허 : 30

초록 ▼

A method of estimating a quantity of toner remaining in a toner cartridge includes using an adaptive term, a value of which is adjusted based on actual printer toner usage. A printer configured to produce an estimate of an amount of toner remaining in a toner cartridge installed in that printer includes a toner remaining algorithm; and an adaptive term, a value of which is adjusted based on actual printer toner usage rate. The algorithm uses the adaptive term to produce the estimate of an amount of toner remaining in the toner cartridge.

대표청구항 ▼

1. A method of estimating toner remaining in a toner cartridge installed in a printer, the method comprising: estimating toner remaining in said toner cartridge installed in said printer using an adaptive term, said adaptive term being an expression comprising a value that is adjusted based on actual printer toner usage for a different toner cartridge previously installed in said printer;calculating a value for said adaptive term when an amount of toner remaining is known or said toner cartridge is fully depleted; andcomparing said calculated value with a current value of said adaptive term;wherein, if said calculated value and said current value of said adaptive term are not within a predetermined range, said method further comprises adjusting said current value based on said calculated value of said adaptive term. 2. The method of claim 1, further comprising using said adaptive term to calculate an estimate of a quantity of toner used prior to estimating toner remaining. 3. The method of claim 2, wherein using said adaptive term to calculate an estimate of a quantity of toner used is performed using a formula in which quantity of toner used=(number indicating wear incurred)·(wear constant)+(number indicating the number and tone of pixels printed)·(pixel constant)·(said adaptive term). 4. The method of claim 1, further comprising using said estimate of a quantity of toner used to estimate an amount of toner remaining in said toner cartridge. 5. The method of claim 4, further comprising reporting said estimate of an amount of toner remaining to a user. 6. The method of claim 1, further comprising tracking a number of pages printed to be used in determining said actual printer toner usage for said toner cartridge previously installed in said printer. 7. The method of claim 1, further comprising tracking a number of pixels printed to be used in determining said actual printer toner usage for said toner cartridge previously installed in said printer. 8. The method of claim 1, wherein, if said calculated value and said current value of said adaptive term are within a predetermined range, further comprising validating said current adaptive term. 9. The method of claim 1, wherein said adjusting comprises substituting said calculated value for said current value of said adaptive term. 10. The method of claim 1, wherein said adjusting comprises averaging said calculated value and said current value of said adaptive term to produce a new current value of said adaptive term. 11. The method of claim 1, wherein, if said calculated value differs from said current value by more than a predetermined limit, said method further comprises treating said calculated value as anomalous. 12. A printer comprising: a processor;a print engine;a toner remaining algorithm for execution by said processor; andan adaptive term, said adaptive term being an expression comprising a value that is adjusted based on a prior toner usage rate for said printer;wherein said algorithm uses said adaptive term to produce an estimate of an amount of toner remaining in a toner cartridge;wherein said algorithm is configured to use said adaptive term to calculate an estimate of a quantity of toner used which is subtracted from a previous estimate of an amount of toner remaining so as to produce a current estimate of an amount of toner remaining in said cartridge; andwherein said algorithm comprises a formula in which quantity of toner used=(number indicating wear incurred)·(wear constant)+(number indicating the number and tone of pixels printed)·(pixel constant)·(said adaptive term). 13. The printer of claim 12, wherein said printer is further configured to report said estimate of an amount of toner remaining to a user. 14. The printer of claim 13, further comprising a network connection for reporting said estimate to said user. 15. The printer of claim 12, wherein said printer is configured to count a number indicative of cartridge wear and a number of pixels printed that is used to produce said estimate of an amount of toner remaining in said toner cartridge. 16. A printer comprising: a processor;a print engine;a toner remaining algorithm for execution by said processor; andan adaptive term, said adaptive term being an expression comprising a value that is adjusted based on a prior toner usage rate for said printer;wherein said algorithm uses said adaptive term to produce an estimate of an amount of toner remaining in a toner cartridge;wherein said algorithm is configured to calculate a value for said adaptive term when an amount of toner remaining is known or said toner cartridge is fully depleted; andwherein said algorithm is further configured to compare said calculated value with a current value of said adaptive term and, if said calculated value and said current value do not match within a predetermined range, said algorithm is further configured to adjust said current value based on said calculated value of said adaptive term. 17. The printer of claim 16, wherein algorithm adjusts said current value by substituting said calculated value for said current value of said adaptive term. 18. The printer of claim 16, wherein algorithm adjusts said current value by averaging said calculated value and said current value of said adaptive term to produce a new current value of said adaptive term. 19. The printer of claim 16, wherein, if said calculated value varies from said current value by more than a predetermined limit, said algorithm treats said calculated value as anomalous.

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Method and system for estimating toner remaining in a cartridge 원문보기

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