Printer ink cartridge with memory storage capacity

• US 5,610,635 A
• Filed: 08/09/1994
• Issued: 03/11/1997
• Est. Priority Date: 08/09/1994
• Status: Expired due to Term

• Current Assignee: Eastman Kodak Company
• Original Assignee: ENCAD, Inc. (Eastman Kodak Company)
• Inventors: Murray, Richard A., Dull, Dan J.
• Primary Examiner(s): TRAN, HUAN HUU
• Application Number:
  US08/287,907
• Time in Patent Office: 945 Days
• Field of Search: 347/7, 347/19, 347/86, 347/87
• US Class Current: 347/7
• CPC Class Codes: B41J 2/1752 Mounting within the printer
• CPC Class Codes: B41J 2/17526 Electrical contacts to the cartridge
• CPC Class Codes: B41J 2/17546 electronically
• CPC Class Codes: B41J 2/17566 Ink level or ink residue control
• CPC Class Codes: B41J 25/34 Bodily-changeable print heads or carriages

Abstract

A printer ink cartridge includes a rigid cartridge body containing ink, a plurality of ink orifices, a jet plate, a plurality of electrical conductors, a control and driver circuit and a memory storage element. The memory storage element is connected to the control and driver circuit to enable information to be retrieved and stored from the memory storage element. The memory storage element is capable of storing information regarding the printer ink cartridge and the ink stored within the cartridge selected, such as ink type, ink color, date of manufacture of the cartridge, data from a spectral analysis of the ink, initial amount of ink stored in the cartridge body, amount of ink delivered, and amount of ink remaining in the cartridge. The memory storage element can be an EEPROM or a flash memory. The control and driver circuit may also include a counter for counting the number of times the heating elements on the cartridge are energized. The approximate number of times the heating elements have been energized indicates the approximate number of drops of ink that have applied by the cartridge.

Claims

1. A printer ink cartridge capable of storing information regarding said cartridge, including (i) a cartridge body containing ink, (ii) a plurality of ink ejection orifices and (iii) a jet plate comprising a plurality of heating elements, wherein each of said plurality of heating element is associated with one of said ink ejection orifices, said primer ink cartridge comprising:

(a) a logic circuit and a plurality of driver circuits, wherein a portion of said logic circuit is connected to each of said plurality of driver circuits to selectively energize said driver circuits and each of said plurality of driver circuits is connected to one of said heating elements to energize said heating element for applying a drop of ink, wherein said logic circuit is electrically connected to receive a plurality of bits comprising a word from print electronics external to said cartridge, and wherein said logic circuit actuates a predetermined set of said plurality of driver circuits in response to said word;

(b) a plurality of electrical conductors connecting said jet plate to said plurality of driver circuits;

(c) a memory storage element electrically connected to said logic circuit; and

,

(d) a counter electrically connected to said logic circuit, said counter being incremented a predetermined amount by said logic circuit in response to said word, wherein an output of said counter is periodically stored in said memory.

2. The cartridge of claim 1, wherein said memory storage element comprises a flash memory.

3. The cartridge of claim 1, wherein said memory storage element comprises an EEPROM.

4. The cartridge of claim 1, wherein said memory storage element comprises a RAM, wherein said RAM is connected to a battery power supply.

5. The cartridge of claim 1, wherein said memory storage element comprises a PROM.

6. The cartridge of claim 1, wherein said memory storage element stores information regarding said cartridge and said ink selected from the group consisting of:

ink type, ink color, lot number of the ink, date of manufacture of the cartridge, data from a spectral analysis of the ink, initial amount of ink stored in the cartridge body, amount of ink delivered, and amount of ink remaining in the cartridge body.

7. The cartridge of claim 1, wherein said control and driver circuit is formed on an integrated circuit.

8. The cartridge of claim 1, wherein said control and driver circuit and said memory storage element are formed on a single application-specific integrated circuit (ASIC).

9. The cartridge of claim 1, wherein said control and driver circuit further comprises a counter for counting the number of times the heating elements on said cartridge are energized.

10. The cartridge of claim 9, wherein said counter stores a value in said memory element when instructed by the logic block.

11. The cartridge of claim 1, further comprising a plurality of conductive pads, wherein said conductive pads are connected to said control and driver circuit at one end and at an opposite end to a location remote from said cartridge.

12. The cartridge of claim 1, wherein said control and driver circuit further comprises a plurality of flip-flops.

13. The cartridge of claim 1, wherein said plurality of heating elements are resistive elements.

14. A cartridge for an ink printer, having memory capabilities, comprising:

(a) a rigid cartridge body containing ink;

(b) a plurality of ink ejection orifices;

(c) a jet plate comprising a plurality of heating elements, wherein each of said plurality of heating element is associated with one of said ink ejection orifices;

(d) a memory storage element and a control and driver circuit connected together and formed on an application specific integrated circuit, said control and driver circuit comprising a control circuit, a plurality of driver circuits and a counter, wherein (i) a first portion of said control circuit is connected to each of said plurality of driver circuits to selectively energize said driver circuits in response to a plurality of bits comprising a word received from an external device (ii) a second portion of said control circuit is connected to said counter for controlling the operation of said counter in response to said word, and (iii) a third portion of said control circuit is connected to said memory storage element for routing information to/from said memory storage element from/to said external device and wherein each of said plurality of driver circuits is connected to one of said heating elements to energize said heating element for applying a drop of ink;

(e) a plurality of electrical contacts;

(f) a first plurality of electrical conductors connecting said jet plate to said integrated circuit; and

(g) a second plurality of electrical conductors connecting said integrated circuit to said electrical contacts for communicating information to/from said external device.

15. The cartridge of claim 14, wherein said memory storage element comprises a flash memory.

16. The cartridge of claim 14, wherein said memory storage element is capable of storing information regarding said cartridge and said ink selected from the group consisting of:

ink type, ink color, lot number of the ink, date of manufacture of the cartridge, data from a spectral analysis of the ink, initial amount of ink stored in the cartridge body, amount of ink delivered, and amount of ink remaining in the cartridge body.

17. In a printing system comprising a printer ink cartridge incorporating a plurality of ink ejection orifices and a jet plate comprising a plurality of heating elements, wherein each of said plurality of heating elements is associated with one of said ink ejection orifices, a method for accessing information stored in a memory storage element on said printer ink cartridge from an external device, comprising the steps of:

routing a plurality of bits comprising a word from said external device to said printer ink cartridge, said word comprising command bits and data bits, wherein at least one heating element is energized in response to said data bits, and wherein said command bits comprise address information;

retrieving data stored in a location of said memory storage device indicated by said address information;

routing said retrieved data from said memory storage device to said external device.

18. A method for automatically calculating the amount of ink remaining in a printer ink cartridge, said printer ink cartridge having (i) a counter capable of counting to a maximum number, (ii) a memory storage element and (iii) a plurality of nozzles, comprising the steps of:

incrementing a value stored in said counter an amount determined by the content of a plurality multi-bit words serially received by said printer ink cartridge from external print electronics, said amount being indicative of the quantity of ink expelled from said plurality of nozzles; and

storing the value of said counter at a specified time interval in said memory storage element.

19. A method for automatically calculating the amount of ink remaining in a printer ink cartridge as defined in claim 18 additionally comprising the steps of:

storing an initial amount of ink contained in said printer ink cartridge in said memory storage element; and

subtracting the value of said counter stored in said memory storage element from said stored initial amount of ink contained in said printer ink cartridge.

20. A method for automatically calculating the amount of ink remaining in a printer ink cartridge, said printer ink cartridge having (i) a counter capable of counting to a maximum number, (ii) a memory storage element and (iii) a plurality of nozzles, comprising the steps of:

incrementing said counter in response to multi-bit words received from print electronics external to said printer ink cartridge an amount indicative of the ink expelled from each of said plurality of nozzles;

storing a bit of data in said memory storage element each time said counter reaches a maximum value; and

resetting said counter to an initial value when said counter reaches said maximum value.

21. A method for automatically calculating the amount of ink remaining in a printer ink cartridge as defined in claim 20 additionally comprising the step of:

storing an initial amount of ink contained in said printer ink cartridge in said memory storage element.

22. A method for automatically calculating the amount of ink remaining in a printer ink cartridge as defined in claim 21 additionally comprising the steps of:

calculating the amount of ink expelled from said cartridge; and

subtracting the amount of ink expelled from said cartridge from said stored initial amount of ink contained in said printer ink cartridge.

23. A method for automatically calculating the amount of ink remaining in a printer ink cartridge as defined in claim 22, wherein said calculating step further comprises the step of multiplying the number of data bits stored in memory by said maximum value of said counter.

24. A printer having a platen, a support structure, and print carriage, wherein said support structure supports said print carriage above the platen and said print carriage comprising at least one printer cartridge holders, said printer further comprising:

a printer cartridge mounted in said at least one printer cartridge holder, said printer cartridge including (i) a cartridge body containing ink, (ii) a plurality of ink ejection orifices and (iii) a jet plate comprising a plurality of heating elements, wherein each of said plurality of heating element is associated with one of said ink ejection orifices, said printer cartridge further comprising;

(a) a logic circuit and a plurality of driver circuits, wherein a portion of said logic circuit is connected to each of said plurality of driver circuits for controlling the energization of said driver circuits and each of said plurality of driver circuits is connected to one of said heating elements to energize said heating element for applying a drop of ink, wherein said logic circuit is electrically connected to receive a plurality of bits comprising a word from print electronics external to said cartridge, and wherein said logic circuit actuates a predetermined set of said plurality of driver circuits in response to said word;

(b) a plurality of electrical conductors connecting said jet plate to said plurality of driver circuits;

(c) a memory storage element electrically connected to said logic circuit; and

,

(d) a counter electrically connected to said logic circuit, said counter being incremented a predetermined amount by said logic circuit in response to said word, wherein an output of said counter is periodically stored in said memory.

25. A printer ink cartridge capable of storing information regarding said cartridge, including (i) a cartridge body containing ink, (ii) a plurality of ink ejection orifices and (iii) a jet plate comprising a plurality of ink ejection elements, wherein each of said plurality of ink ejection elements is associated with one of said ink ejection orifices, said printer ink cartridge comprising:

a logic circuit electrically connected to receive a plurality of bits comprising a word from print electronics external to said cartridge, said logic circuit actuating a predetermined set of said plurality of ink ejection elements in response to said word; and

,

a counter electrically connected to said logic circuit, said counter being incremented a predetermined amount by said logic circuit in response to said word.

26. The printer ink cartridge of claim 25 additionally comprising a memory element, wherein an output of said counter is periodically stored in said memory element.

27. The printer ink cartridge of claim 26 wherein said word comprises command bits, and wherein said logic circuit transfers data out of said memory element in response to said command bits.

28. The printer ink cartridge of claim 25 wherein an output of said counter is indicative of the amount of ink ejected by said cartridge.

29. The printer ink cartridge of claim 28 wherein said predetermined amount is equal to the number of ink ejection elements actuated by said logic circuit in response to said word.