Memory system and method for consumables of a printer

• US 8,721,203 B2
• Filed: 10/06/2005
• Issued: 05/13/2014
• Est. Priority Date: 10/06/2005
• Status: Active Grant

• Current Assignee: Zebra Technologies Corporation
• Original Assignee: ZIH Corp. (Zebra Technologies Corporation)
• Inventors: Ehrhardt, Robert A. Jr.
• Primary Examiner(s): HA, NGUYEN Q
• Application Number:
  US11/244,620
• Publication Number:
  US 20070081842A1
• Time in Patent Office: 3,141 Days
• Field of Search: 400/120.01
• US Class Current: 400/120.01
• CPC Class Codes: B41J 2/17546 electronically
• CPC Class Codes: B41J 2/32 using thermal heads
• CPC Class Codes: B41J 2/355 Control circuits for heating-element selection
• CPC Class Codes: B41J 2202/17 Readable information on the head

Abstract

A print head for use with a printer. The print head includes an input that receives data or commands associated with printing from the printer. A memory component of the print head is connected in communication with the input and is configured to bi-directionally communicate information to the printer via the input. For example, the memory component may be soldered to a circuit of a print head and connected to a data line normally used to communicate print data to the print head. In this manner, the print head may hold configuration information in the memory module for easy upgrades without an additional dedicated communication line. Also, printers may be upgraded, and print heads retrofit, with the memory component without installation of a dedicated input or communication line.

Claims

1. A print head for use with a printer, said print head comprising:

a print head circuit comprising;

a plurality of connections, the connections comprising;

a clock connection for receiving a clock signal from the printer;

a unidirectional data connection for receiving a data signal comprising print data from the printer;

a latch connection for receiving a latch signal from the printer; and

at least one memory component comprising;

a data input disposed in communication with said latch connection;

wherein the print head circuit is configured to;

(A) receive the latch signal from the printer to the print head circuit via said latch connection when the printer is printing, and (B) allow communication of information bi-directionally between said memory component data input and the printer via said latch connection, wherein the information comprises at least one of use data or operational data.

2. The print head of claim 1, wherein the data connection is distinct from the data input, and wherein the data input does not receive print data.

3. The print head of claim 1, the print head circuit further comprising a power connection for receiving a power signal and the memory component further comprising a power input, wherein said power input of said memory component is configured to electrically communicate via the power connection of the print head circuit.

4. The print head of claim 1, wherein the print head is removable from the printer and the memory component includes a secure memory portion configured to provide access to print head information.

5. The print head of claim 1, wherein said latch connection receives unidirectional communication of said latch signal from said printer when the printer is printing and receives bi-directional communication of information between the printer and said memory component when the printer is not printing.

6. The print head of claim 1, wherein said at least one memory component includes at least one of a secure memory portion and a non-secure memory portion.

7. The print head of claim 6, wherein said information includes at least one of a memory layout version number, a manufacturer identification, a manufacturer serial number, a manufacturer data code, a print head surface coating type, a print head size, a print head resolution, a section count, a print element resistance value, a print element resistance tolerance, a rank resistor value, a printer type, a printer serial number, a special code sequence indicating the content of the secure portion, cyclic redundancy check data, or a duplicate data block.

8. The print head of claim 7, wherein said non-secure memory portion of said memory component contains selected ones of the information.

9. The print head of claim 7, wherein said secure memory portion of said memory component contains selected ones of the information.

10. A printer system for printing indicia on printable media, said printer system comprising:

a printer having at least one communications connection;

a print head associated with the printer, the print head comprising;

a print head circuit comprising a clock connection for receiving a clock signal from the printer, a unidirectional data connection for receiving a data signal comprising print data from the printer, and a latch connection for receiving a latch signal from the printer; and

at least one memory component comprising a data input disposed in communication with said latch connection, wherein the print head circuit is configured to;

(A) receive the latch signal from the printer to the print head circuit via said latch connection when the printer is printing, and (B) allow communication of information bi-directionally between said memory component data input and the printer via the latch connection, wherein the information comprises at least one of use data or operational data.

11. The printer system of claim 10, wherein said latch connection receives unidirectional communication of the latch signal from the printer when the printer is printing and receives bi-directional communication of information between the printer and the memory component when the printer is not printing.

12. The printer system of claim 10, wherein the print head is removable from the printer and the memory component includes a secure memory portion configured to provide access to print head information.

13. The printer system of claim 10, wherein said latch connection receives unidirectional communication of said latch signal from said printer when the printer is printing and receives bi-directional communication of information between the printer and said memory component when the printer is not printing.

14. The printer system of claim 10, wherein said at least one memory component includes at least one of a secure memory portion and a non-secure memory portion.

15. The printer system of claim 14, wherein said information includes at least one of a memory layout version number, a manufacturer identification, a manufacturer serial number, a manufacturer data code, a print head surface coating type, a print head size, a print head resolution, a section count, a print element resistance value, a print element resistance tolerance, a rank resistor value, a printer type, a printer serial number, a special code sequence indicating the content of the secure portion, cyclic redundancy check data, or a duplicate data block.

16. The printer system of claim 15, wherein said non-secure memory portion of said memory component contains selected ones of the information.

17. The printer system of claim 15, wherein said secure memory portion of said memory component contains selected ones of the information.

18. A method for communicating information between a printer and a print head comprising a print head circuit, said method comprising:

receiving at the print head circuit a data signal comprising print data via a unidirectional data connection, a clock signal from the printer via a clock connection, and a latch signal from the printer via a latch connection when the printer is printing;

providing a memory component attached to the print head, the memory component comprising a data input disposed in communication with said latch connection; and

communicating information bi-directionally between the printer and the data input of the memory component via said latch connection, wherein the information comprises at least one of use data or operational data.

19. The method for communicating information between a printer and a print head comprising a print head circuit of claim 18, wherein receiving a latch signal from the printer via the latch connection comprises receiving unidirectional communication of the latch signal from the printer.

20. The method of claim 18, including connecting the input of the memory component to the latch connection prior to bi-directionally communicating.

21. The method of claim 20, wherein connecting the input includes inserting the print head into the printer.

22. The method of claim 18, wherein bi-directionally communicating and receiving a latch signal are not simultaneous.

23. The method of claim 18, further comprising receiving a data key and wherein bi-directionally communicating is conditioned upon receiving the data key.

24. The method of claim 23, wherein bi-directionally communicating includes communicating at least one of a memory layout version number, a manufacturer identification, a manufacturer serial number, a manufacturer data code, a print head surface coating type, a print head size, a print head resolution, a section count, a print element resistance value, a print element resistance tolerance, a rank resistor value, a printer type, a printer serial number, a special code sequence indicating the content of the secure portion, cyclic redundancy check data, or a duplicate data block.

25. A print head for use with a printer, comprising:

a print head for receiving data or commands from a printer and controlling said print head for printing, said print head circuit comprising;

a plurality of connections, the connections comprising;

a clock connection for receiving a clock signal;

a unidirectional data connection for receiving a data signal comprising print data from the printer;

a latch connection for receiving a latch signal from the printer; and

at least one memory component comprising;

a data input disposed in communication with said latch connection;

wherein the print head circuit is configured to;

(A) receive the latch signal from the printer to the print head circuit via said latch connection when the printer is printing, and (B) allow communication of information bi-directionally between said memory component data input and the printer via said latch connection, wherein the information comprises at least one of use data or operational data.

26. The print head of claim 25, wherein said latch connection receives unidirectional communication of the latch signal from the printer when the printer is printing and receives bi-directional communication of information between the printer and the memory component when the printer is not printing.

27. The print head of claim 25, wherein the at least one memory component is configured to selectively allow communication of the information via said data input when the latch connection is not receiving a latch signal.

28. The print head of claim 25, wherein the memory component includes a secure portion accessible using a data key.

29. The print head of claim 28, wherein print head information is stored on the secure portion of the memory component.

30. A method for communicating information between a printer and a print head comprising a print head circuit and a memory, said method comprising:

in response to the printer performing a print job;

receiving a clock signal from the printer at a clock connection of the print head circuit;

receiving a data signal from the printer at a data connection of the print head circuit;

receiving a latch signal from the printer at a latch connection of the print head circuit;

in response to the printer not performing a print job;

communicating bi-directionally between a data input of the memory and the printer via the latch connection.

31. The method of claim 30, wherein the clock connection, data connection, and latch connection are each configured to be uni-directional in response to the printer performing a print job, and wherein the latch connection is configured to be bi-directional in response to the printer not performing a print job.