Dual mode communication device for a fluid ejection device

• US 6,568,775 B2
• Filed: 10/31/2001
• Issued: 05/27/2003
• Est. Priority Date: 10/31/2001
• Status: Expired due to Fees

• Current Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Original Assignee: Hewlett-Packard Development Company, L.P. (HP Inc.)
• Inventors: Zaremba, Andrew Joseph
• Primary Examiner(s): HALLACHER, CRAIG ALAN
• Application Number:
  US10/003,987
• Publication Number:
  US 20030081021A1
• Time in Patent Office: 573 Days
• Field of Search: 347/5, 347/19, 347/50, 347/85-87
• US Class Current: 347/5
• CPC Class Codes: B41J 2/17546 electronically
• CPC Class Codes: B41J 2/1755 mechanically

Abstract

The present invention includes as one embodiment a fluid ejection device coupled to a controller that sends and receives data signals to and from the fluid ejection device, the printhead comprising a communication device that facilitates data signal transfer between the printhead and the controller through both physical electrical contact and radio frequency signals.

Claims

1. A fluid ejection device coupled to a controller that sends and receives data signals to and from the fluid ejection device, the printhead comprising:

a communication device that facilitates data signal transfer between the printhead and the controller through both physical electrical contact and radio frequency signals.

2. The printhead of claim 1, wherein the communication device includes an RF coupler and physical electrical contacts.

3. The printhead of claim 2, wherein the physical electrical contact points include a gold corrosion protective layer.

4. The printhead of claim 2, wherein the communication device further includes a memory device for storing data pertinent to printing.

5. The printhead of claim 1, wherein the communication device includes a distributive programmable data processor.

6. The printhead of claim 1, further comprising a fluid communication device that is coupled to the controller through both physical electrical contact and radio frequency signals to control a fluid supply.

7. The printhead of claim 1, wherein the physical electrical contact and radio frequency signals communicate with the controller simultaneously.

8. A memory device of a printhead coupled to a controller for sending and receiving data signals to and from the printhead, the memory device comprising:

a communication device with a physical electrical contact area and a radio frequency coupler for sending and receiving data signals between the printhead and the controller; and

a storage area for storing data pertinent to printing.

9. The memory device of claim 8, wherein the physical electrical contact area includes a gold corrosion protective layer.

10. The memory device of claim 8, wherein the communication device includes a distributive programmable data processor.

11. The memory device of claim 8, further comprising a communication interface between the memory device and an ink communication device.

12. The memory device of claim 11, wherein the ink communication device is coupled to the controller through both physical electrical contact and radio frequency signals for controlling an ink supply.

13. The memory device of claim 12, wherein the ink communication device includes a memory device for storing data regarding the ink.

14. The memory device of claim 8, wherein the physical electrical contact and radio frequency signals communicate with the controller simultaneously.

15. A method for sending and receiving data signals between a controller and a printhead, the method comprising:

transferring data signals between the printhead and the controller through physical electrical contacts; and

transferring data signals between the printhead and the controller through radio frequency signals.

16. The method of claim 15, further comprising coupling RF signals and physical electrical contacts to facilitate radio frequency and physical electrical communication, respectively.

17. The method of claim 15, further comprising providing a gold corrosion protective layer to the physical electrical contacts.

18. The method of claim 15, further comprising providing a memory device for storing data pertinent to printing.

19. The method of claim 15, further comprising providing a distributive programmable data processor.

20. The method of claim 15, wherein physical electrical contact and radio frequency signals of the printhead communicate with the controller simultaneously.