# US 11,307,514 B2 · Resource conditioning

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- Number: US 11,307,514 B2
- Document ID: US11307514B2
- Status: Granted
- Kind: B2
- Application number: 17/050,468
- Filed: 2018-06-15
- Published: 2021-04-08
- Granted: 2022-04-19
- Earliest claimed: 2018-06-15
- Assignees: Hewlett-Packard Development Company, L.P.
- Applicants: Hewlett-Packard Development Company, L.P.
- Inventors: Aleix Fort Filgueira; Alejandro Mielgo; Michel Georges Encrenaz
- Web page: https://patentgrep.com/patent/US11307514B2

## CPC

- B41J 2/17546: {electronically}
- G03G 15/0863: {provided with identifying means or means for storing process- or use parameters, e.g. an electronic memory}
- B41J 2/1752: {Mounting within the printer}
- B41J 2/1755: {mechanically}
- G03G 15/55: {Self-diagnostics; Malfunction or lifetime display}
- G03G 21/1652: {Electrical connection means}
- G03G 21/1657: {Wireless connection means, e.g. RFID}
- G03G 2221/1823: Cartridges having electronically readable memory
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

There is provided a method and apparatus for monitoring conditioning of a rendering material in a storage structure, where the storage structure comprises a passive transceiver. The passive transceiver may generate a varying response signal where a strength of the varying signal can be monitored and used to determine a pre-conditioning parameter indicative of a condition of the storage structure.

## Claims

### Claim 1

A method for monitoring conditioning of a rendering material in a storage structure, the storage structure including a passive transceiver, the method comprising:
energizing the passive transceiver to generate a response signal;
monitoring variation in a strength of the response signal; and
determining, using the strength of the response signal, a pre-conditioning parameter indicative of a condition of the storage structure.

### Claim 2 (depends on 1)

The method as claimed in claim 1, wherein the pre-conditioning parameter relates to a speed of rotation of the storage structure.

### Claim 3 (depends on 2)

The method as claimed in claim 2, further comprising:
determining a period of time that the speed of rotation of the storage structure exceeds a predetermined speed threshold value.

### Claim 4 (depends on 1)

The method as claimed in claim 1, wherein the pre-conditioning parameter relates to a number of rotations of the storage structure.

### Claim 5 (depends on 4)

The method as claimed in claim 4, further comprising:
determining a period of time that the number of rotations of the storage structure exceeds a predetermined rotation threshold value.

### Claim 6 (depends on 1)

The method as claimed in claim 1, further comprising:
calculating a time period between two consecutive maxima or minima in the strength of the response signal.

### Claim 7 (depends on 1)

The method as claimed in claim 1, further comprising:
calculating a number of consecutive maxima or minima in the strength of the response signal.

### Claim 8 (depends on 1)

The method as claimed in claim 1, further comprising:
calculating a direction of rotation based on the response signal.

### Claim 9 (depends on 1)

The method as claimed in claim 1, further comprising:
calculating a degree of similarity of the response signal to a pre-determined signal in a set of signals.

### Claim 10 (depends on 9)

The method as claimed in claim 9, further comprising:
determining, based on the degree of similarity, a condition of the rendering material in the storage structure.

### Claim 11 (depends on 1)

The method as claimed in claim 1, further comprising:
determining an identity of the storage structure via the passive transceiver; and
adding the identity of the storage structure and a timestamp to a database when a predetermined threshold value is exceeded.

### Claim 12 (depends on 11)

The method as claimed in claim 11, further comprising:
removing, after a pre-determined amount of time has lapsed beyond the timestamp, the identity of the storage structure from the database.

### Claim 13

A rendering apparatus comprising:
an active transceiver configured to energize a passive transceiver to generate a response signal; and
a processor configured to:
monitor variation in a strength of the response signal; and
determine, using the strength of the response signal, a pre-conditioning parameter indicative of a condition of the storage structure.

### Claim 14

A print cartridge for a rendering apparatus, the print cartridge comprising a passive transceiver configured to generate a response signal when energized, wherein the passive transceiver is an RFID tag with an embedded antenna and identification number, and wherein the response signal generated has a strength on which basis a pre-condition parameter indicative of a condition of the rendering apparatus is determinable.