Apparatus controlled by data from consumable parts with incorporated memory devices

• US 5,812,156 A
• Filed: 01/21/1997
• Issued: 09/22/1998
• 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: Childers, Winthrop D., Bullock, Michael L.
• Primary Examiner(s): Burr, Edgar S.
• Assistant Examiner(s): Ghatt, Dave A.
• Application Number:
  US08/785,580
• Time in Patent Office: 609 Days
• Field of Search: 347/17, 347/14, 347/7, 347/19
• US Class Current: 347/19
• 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

A printing system includes a replaceable cartridge for housing a supply of consumable marking media. The cartridge includes a cartridge memory for recording printing system-related parameters, including marking media parameters. A replaceable printing device, such as an ink jet head, includes a printhead memory for recording printing device-related parameters. A processor is coupled to the cartridge memory, the printhead memory and is responsive to parameters read from both memories to derive printing system function control values that are dependent upon one or more marking media parameters from the cartridge memory and one or more parameters from the printhead memory. The processor is thus able (in the case of an ink jet printing system) to determine a current ink supply value from a cumulative usage value stored on the cartridge memory and a drop volume parameter stored on the printhead memory. Further, a drop volume parameter stored on the printhead memory can be adjusted to accommodate a media type sensed by a media sensor.

Claims

1. A printing system comprising:

replaceable cartridge means for housing a supply of consumable marking media and including cartridge memory means for recording printer-related parameters, including marking media parameters;

replaceable print means for producing marks on a print media and including printhead memory means mounted thereon for recording print means-related parameters;

processor means coupled to said cartridge memory means and said printhead memory means and responsive to parameters read from both said cartridge memory means and said printhead memory means for deriving a printer function control value that is dependent upon at least a marking media parameter from said cartridge memory means and a print means-related parameter from said printhead memory means.

2. The printing system as recited in claim 1, wherein said replaceable cartridge means is an ink reservoir cartridge that is pluggably insertable into said printing system and said cartridge memory means forms an integral part of said cartridge and makes electrical connection to said printing system upon insertion of said cartridge.

3. The printing system as recited in claim 2, wherein said printing system control function value is a number of ink drops that are fired per count of an ink volume counting means.

4. The printing system as recited in claim 2, wherein said replaceable print means is an ink jet printhead that is pluggably insertable into said printing system and said printhead memory means forms an integral part of said ink jet printhead and makes electrical connection to said printing system upon insertion of said ink jet print head.

5. The printing system as recited in claim 4, further comprising:

sense means coupled to said ink jet printhead for producing signals indicative of mark production by said ink jet printhead, said processor means further employing data derived from said signals to arrive at said printing system control function value.

6. The printing system as recited in claim 5, wherein a parameter relating to current ink volume received by said processor from said cartridge memory means, a parameter relating to drop volume received from said printhead memory means and said data derived from said sense means, are combined by said processor means to adjust said parameter relating to current ink volume.

7. The printing system as recited in claim 6, wherein said processor means causes said parameter relating to current ink volume, that is adjusted, to be written back into said cartridge memory means.

8. The printing system as recited in claim 6, further comprising:

display means coupled to said processor means; and

wherein said processor means is responsive to said value of current ink volume that is adjusted and a parameter from said cartridge memory means relating to cartridge supply ink volume, to provide a gauge indication on said display means which indicates an amount of ink remaining in said ink reservoir cartridge.

9. The printing system as recited in claim 4, further comprising;

media sense means for providing to said processor means a media type signal that is dependent upon a type of media sheet present in said printing system; and

wherein said media type signal and a parameter read from said cartridge memory means are employed by said processor means to provide a control signal for adjusting dot density produced by said printing system.

10. A method for controlling operation of a printing system, wherein the printing system includes (i) a replaceable cartridge for housing a supply of consumable marking media, said cartridge further including a cartridge memory mounted thereon for recording printing system-related parameters, including marking media parameters and (ii) replaceable print means for producing marks on a print media and further including a print memory mounted thereon for recording print means-related parameters, the method comprising the steps of:

reading parameters stored on both said cartridge memory and said print memory; and

deriving a printing system function control value that is dependent upon at least a marking media parameter read from said cartridge memory and a print means-related parameter read said print memory means.

11. The method as recited in claim 10, further comprising the steps of:

deriving signals from said print means indicative of mark production thereby; and

employing data derived from said signals to arrive at said printing system control function value.

12. The method as recited in claim 10, further comprising the steps of:

sensing a media type signal that is dependent upon a type of media sheet present in said printing system; and

combining said media type signal and a parameter relating to a marking media characteristic in said cartridge, received from said cartridge memory, to provide a control signal for adjusting dot density produced by said printing system.

13. The method as recited in claim 10, further comprising the steps of:

adjusting a parameter relating to current marking media volume in accord with said control signal; and

writing said parameter that is adjusted back into said cartridge memory.

14. The method as recited in claim 10, further comprising the steps of:

displaying a gauge indication which indicates an amount of marking media remaining in said cartridge, said amount determined from said value of current marking media that is adjusted and a parameter from said cartridge memory relating to cartridge marking media ink volume.

15. A replaceable ink cartridge for an ink jet printing system, the printing system including a replaceable printhead for producing marks on a print media, the replaceable printhead having a printhead memory element mounted thereon for recording print means-related parameters, the printing system including a processor means that is coupled to the printhead memory element when the replaceable printhead is releasably coupled to the printing system, the replaceable ink cartridge comprising:

an ink reservoir containing an ink supply;

a discharge port in fluid communication with the ink reservoir, the discharge port establishing fluid communication with a fluid inlet in the ink station when the ink cartridge is releasably mounted to the receptacle; and

a cartridge memory element mounted thereon and having cartridge-related parameters stored therein, the cartridge memory element electrically coupled with the processor means so that the processor means has access to the cartridge-related parameters when the ink cartridge is installed in the receptacle;

wherein, in order to carry out a printing operation where ink is transferred from the ink reservoir through the discharge port to the printhead, certain cartridge-related parameters stored in the cartridge memory element are stored and/or modified by signals from the processor means, and or transmitted from the ink cartridge to the processor means so that the processor means derives a printing system function control value that is dependent upon at least both a cartridge-related parameter and a printhead-related parameter when the replaceable print means and the replaceable ink cartridge are releasably installed in the ink jet printing system.

16. The replaceable ink cartridge of claim 15, wherein the cartridge-related parameters include factory parameters that are recorded at the time the ink cartridge is manufactured.

17. The replaceable ink cartridge of claim 16, wherein the cartridge factory parameters include the volume of the ink supply.

18. The replaceable ink cartridge of claim 16, wherein the printhead-related parameters include factory parameters that are recorded at the time the replaceable printhead is manufactured.

19. The replaceable ink cartridge of claim 18, wherein the factory parameters include a printhead drop volume.

20. A replaceable ink cartridge for an ink jet printing system, the printing system including a plurality of printheads of different colors for ejecting droplets of ink on media, each printhead including a printhead memory element mounted thereon and having printhead factory parameters stored therein, the printing system having a processor means for controlling printing system function, the processor means coupling with the printhead memory element so that the processor means has access to the printhead factory parameters, the printing system including an ink station for supplying ink to the printhead, the ink station including a plurality of receptacles corresponding to the plurality of printheads, the replaceable ink cartridge comprising:

a cartridge body having an ink reservoir therein, the cartridge body adapted to be releasably mounted to one of the plurality of receptacles in said ink jet printing system;

a discharge port in fluid communication with the ink reservoir, the discharge port establishing fluid communication with a fluid inlet in one of the plurality of receptacles when the cartridge body is releasably mounted to one of the plurality of receptacles to thereby enable ink to flow out of the discharge port and to an associated printhead when the cartridge body is releasably mounted to one of the plurality of receptacles; and

an ink cartridge memory element mounted thereon and adapted to electrically couple to the processor means when the cartridge body is releasably mounted to one of the plurality of receptacles, the ink cartridge memory element thereby providing ink cartridge factory parameters to the processor means; and

wherein, in order to carry out a printing operation where ink is transferred from the ink reservoir through the discharge port and to the printhead, certain factory-inserted parameters stored in the ink cartridge memory element are transmitted from the ink cartridge memory element to the processor means so that the processor means combines at least one ink cartridge factory-inserted parameter and at least one printhead factory-inserted parameter to derive a usage control parameter for the printhead.

21. The replaceable ink supply of claim 20, wherein the ink reservoir has a deliverable volume of ink and wherein the at least one ink cartridge factory parameter includes a value corresponding to the deliverable volume of ink.

22. The replaceable ink supply of claim 20, wherein the at least one printhead factory parameter includes a value corresponding to the drop volume of the printhead.

23. The replaceable ink supply of claim 20, wherein the ink reservoir has a usage life, and the processor means periodically calculates the usage control parameter during a usage life of the ink reservoir to provide an updated usage value, the processor means periodically writing the updated usage value to the ink cartridge memory element.

24. The replaceable ink supply of claim 23, wherein the processor means reads the usage control parameter from the ink cartridge memory element, the processor means combines at least one ink cartridge factory parameter, at least one printhead factory parameter, and the usage control parameter to calculate the updated usage control parameter.