Ink jet supply component including a secure memory serial device
First Claim
1. An ink jet printing system comprising a printhead (1a and 2a), an ink supply container (3a and 4a), a carriage board (5) in communication with the printhead (1a and 2a), and a main board (6) in communication with the ink supply container (3a and 4a) and the carriage board (6), wherein the system further comprises:
- a serial device (10a) disposed on the printhead (1a and 2a) or the ink supply container (3a and 4a), wherein the serial device (10a) comprises;
a. a memory area (12) with a unique signature;
b. a secure hash engine (14) adapted to generate an authentication code from the unique signature; and
c. a pulsed bus (16) comprising a bidirectional port.
1 Assignment
0 Petitions
Accused Products
Abstract
The embodied systems are used to manage consumables used in an ink jet print system and to prevent use of unauthorized printheads or unauthorized ink supply containers in an ink jet printing system. The embodiments are used on typical ink jet printing systems that include a printhead, an ink supply container, a carriage board in communication with the printhead, and a main board in communication with the ink supply container and the carriage board. The novel systems include a serial device disposed on the printhead or the ink supply container having a unique signature which is then authenticated by firmware and hardware of the printing system.
29 Citations
30 Claims
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1. An ink jet printing system comprising a printhead (1a and 2a), an ink supply container (3a and 4a), a carriage board (5) in communication with the printhead (1a and 2a), and a main board (6) in communication with the ink supply container (3a and 4a) and the carriage board (6), wherein the system further comprises:
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a serial device (10a) disposed on the printhead (1a and 2a) or the ink supply container (3a and 4a), wherein the serial device (10a) comprises;
a. a memory area (12) with a unique signature;
b. a secure hash engine (14) adapted to generate an authentication code from the unique signature; and
c. a pulsed bus (16) comprising a bidirectional port. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A method for managing consumables used in an ink jet print system, wherein the method comprises the steps of:
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a. encoding a serial device for a printhead with a unique signature;
b. initializing the serial device to include data selected from the group consisting of consumable type information, ink type information, ink color information, original equipment manufacturer information, printhead TSR values, ink usage, and combinations thereof;
c. delivering the printhead to a customer'"'"'s facility;
d. communicating periodically with the serial device at the customer'"'"'s facility to track ink consumption through the printhead wherein the communicating includes authenticating the serial device by verifying the unique signature within the serial device using hardware and firmware within the ink jet print system;
e. tracking the ink consumption and comparing the ink consumption to a first threshold level;
f. providing a first message to an operator when the first threshold level is reached; and
g. providing a second message to the operator when a second threshold level is reached, thereby indicating that the operator should replace the printhead. - View Dependent Claims (28)
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29. A method for preventing unauthorized duplication and use of an ink jet print system, wherein the method comprises the steps of:
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a. encoding a serial device for a printhead with a unique signature;
b. initializing the serial device to include data selected from the group consisting of consumable type information, ink type information, ink color information, original equipment manufacturer information, printhead TSR values, ink usage, and combinations thereof;
c. delivering the printhead to a customer'"'"'s facility;
d. communicating periodically with the serial device at the customer'"'"'s facility to track ink consumption through the printhead wherein the communicating includes authenticating the serial device by verifying the unique signature within the serial device using hardware and firmware within the ink jet print system;
e. tracking the ink consumption and comparing the ink consumption to a first threshold level;
f. providing a first message to an operator at the customer'"'"'s facility that the first threshold level is reached; and
g. providing a second message to the operator when a second threshold level is reached, thereby indicating that the operator should replace the printhead. - View Dependent Claims (30)
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Specification