# US 11,305,529 B2 · Group reference

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- Number: US 11,305,529 B2
- Document ID: US11305529B2
- Status: Granted
- Kind: B2
- Application number: 16/342,920
- Filed: 2017-01-27
- Published: 2020-02-06
- Granted: 2022-04-19
- Earliest claimed: 2017-01-27
- Assignees: Hewlett-Packard Development Company, L.P.
- Applicants: Hewlett-Packard Development Company, L.P.
- Inventors: Josep-Lluis Molinet
- Web page: https://patentgrep.com/patent/US11305529B2

## CPC

- B41J 2/04536: {using history data}
- B41J 2/175: Ink supply systems {; Circuit parts therefor}
- B41J 2/0458: {controlling heads based on heating elements forming bubbles}
- B41J 2/04581: {controlling heads based on piezoelectric elements}
- B41J 2/17526: {Electrical contacts to the cartridge}
- B41J 2/17546: {electronically}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

In an example, a print system is described and includes a supply interface to form electrical communication with a container of print fluid and a controller to retrieve data from a machine-readable medium coupled to the container, identify a container group identifier based on the retrieved data, and set a group flag based on a comparison of the container group identifier with data representing a group reference.

## Claims

### Claim 1

A print system comprising:
a supply interface to form electrical communication with a container of print fluid; and
a controller to:
retrieve, via the supply interface, data from a machine-readable medium coupled to the container;
identify a container group identifier based on the retrieved data; and
set a group flag based on a comparison of the container group identifier with data representing a group reference.

### Claim 2 (depends on 1)

The system of claim 1, wherein the controller is to:
in response to a determination that the group flag indicates a mismatch between the container group identifier and the group reference, cause data to be written to a machine-writeable medium coupled to the container.

### Claim 3 (depends on 2)

The system of claim 2, wherein the controller is to:
in response to the determination that the group flag indicates a mismatch between the container group identifier and the group reference, update the group reference and cause a notification to a control panel on the print system.

### Claim 4 (depends on 1)

The system of claim 1, wherein the controller is to:
enable a print mode based on the group flag; or
perform color calibration based on the group flag.

### Claim 5 (depends on 1)

The system of claim 1, wherein the controller is to:
in response to a change to the group flag, cause an interrupt routine to switch operational status of a feature of the print system.

### Claim 6 (depends on 1)

The system of claim 1, wherein the controller is to:
determine a use flag status using the retrieved data; and
when the usage flag status indicates an initial use, cause data to be written to a machine-writeable medium coupled to the container.

### Claim 7 (depends on 6)

The system of claim 6, wherein the machine-readable medium and the machine-writable medium are the same medium and the data to be written includes printer identifiable information.