# US 11,305,540 B2 · Cleaning print head cap

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- Number: US 11,305,540 B2
- Document ID: US11305540B2
- Status: Granted
- Kind: B2
- Application number: 16/603,508
- Filed: 2018-07-20
- Published: 2021-10-28
- Granted: 2022-04-19
- Earliest claimed: 2018-07-20
- Assignees: Hewlett-Packard Development Company, L.P.
- Applicants: Hewlett-Packard Development Company, L.P.
- Inventors: Ricardo Oltra Ramirez; Lluis Sole Enrech; Jose Angel Villasante Bembibre; Jose Garcia Martinez
- Web page: https://patentgrep.com/patent/US11305540B2

## CPC

- B41J 2/16517: {Cleaning of print head nozzles (B41J2/16505, B41J2/1707 take precedence)}
- B41J 2/16507: {integral with the printhead}
- B41J 2/17533: {Storage or packaging of ink cartridges}
- B41J 2/17536: {Protection of cartridges or parts thereof, e.g. tape}
- B41J: TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS

## Abstract

A print head cap comprising a base element extending along a longitudinal direction and a first wall element extending along the longitudinal direction and connected to the base element. The base element comprises a cleaning element of a cleaning material on an inner side of the base element facing the first wall element. The first wall element comprises a first attachment element to removably attach the print head cap to a print head. The first attachment element allows removing the print head cap from the print head while the cleaning element remains in contact with the printing area of the print head by sliding the print head cap along the longitudinal direction, wherein the longitudinal direction is perpendicular to an ink depositing direction of the print head.

## Claims

### Claim 1

A print head cap comprising:
a base element extending along a longitudinal direction;
a first wall element extending along the longitudinal direction and connected to the base element;
wherein the base element comprises a cleaning element of a cleaning material on an inner side of the base element facing the first wall element;
wherein the first wall element comprises a first attachment element that is adapted to removably attach the print head cap to a print head,
wherein the first attachment element is further adapted to guide a sliding movement of the print head cap along the longitudinal direction with respect to the printing head during a removal movement of the print head cap while maintaining the cleaning element in sliding engagement with a printing area of the print head during the removal movement, and
wherein the longitudinal direction is perpendicular to an ink depositing direction of the print head.

### Claim 2 (depends on 1)

The print head cap of claim 1, wherein the first attachment element comprises any of a groove and a protrusion extending along the longitudinal direction.

### Claim 3 (depends on 1)

The print head cap of claim 1, wherein the cleaning material comprises any of a thermoplastic, an ethylene propylene diene monomer rubber, or a combination thereof.

### Claim 4 (depends on 1)

The print head cap of claim 1, further comprising a second wall element extending along the longitudinal direction and connected to the base element; wherein the second wall element extends opposite and parallel to the first wall element such that the base element extends between the first wall element and the second wall element.

### Claim 5 (depends on 4)

The print head cap of claim 4, wherein the second wall element comprises a second attachment element that is adapted to removably attach the print head cap to the print head; and
wherein the first and second attachment elements allow removing the print head cap from the print head by sliding the print head cap along the longitudinal direction.

### Claim 6 (depends on 5)

The print head cap of claim 5, further comprising a third wall element extending perpendicular to the longitudinal direction and connected to the base element, wherein the third wall element extends perpendicular to any or both of the first and second wall elements such that the base element extends between the third wall element and said any or both of the first and second wall elements.