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US 8,573,733 B2Granted
Protective device for inkjet printheads
AssigneeXerox Corporation
InventorsBarry Paul Mandel, Jeffrey J. Folkins, Joannes N. M. DeJong, Lloyd A. Williams, Linn C. Hoover, Ruddy Castillo
Life of this patent
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Abstract
An inkjet printhead is configured to reduce the likelihood of media coming into contact with a printhead face. The inkjet printhead includes a housing, an aperture plate having a plurality of apertures in an aperture area through which inkjet ejectors eject ink, and a pair of members aligned with a direction of media movement and extending along a length of the aperture area, the pair of members being configured to lift media away from the plurality of apertures in the aperture area.
Claims12
An inkjet printhead comprising:
- a housing;
- an aperture plate having a plurality of apertures in an aperture area through which inkjet ejectors eject ink onto media as the media moves past the printheads in a first direction;
- and
- a pair of members extending from a surface of the housing, each member extending along a length of the aperture area and being on a side of the aperture area opposite another side of the aperture area along which the other member extends, each member having a first end, a second end and a length between the first end and the second end that is aligned with the first direction, and each member in the pair of members having a ramp at the first end of the member that slopes from the surface of the housing to a surface of the member that is vertically displaced from the surface of the housing and the ramp extends along a portion, but not all, of the length of the member to enable the ramp to engage a leading edge of media moving in the first direction to be lifted by the ramp to the vertically displaced surface of the member before the leading edge reaches the plurality of apertures.
1 more element
An inkjet printhead array comprising:
- a plurality of printheads arranged in an array of printheads to eject ink in a continuous line across media as the media passes by the plurality of printheads in a first direction that is perpendicular to the continuous line, each printhead having an aperture plate having a plurality of apertures through which inkjet ejectors eject ink;
- and
- only one pair of members positioned proximate the plurality of printheads, each member in the pair of members being positioned so no member is located within the array of printheads and each member extends along a side of the array of printheads that is opposite another side of the array along which the other member in the pair of members extends, each member in the pair of members having a first end, a second end, and a length between the first end and the second end that is aligned with the first direction, and each member having a ramp at the first end of the member that slopes from a surface in a common plane with the aperture plates in the printhead array to a surface of the member that is vertically displaced from the surface of the common plane, the ramp extending along a portion, but not all, of the length of the member to enable the ramp to engage a leading edge of media moving in the first direction to be lifted by the ramp to the vertically displaced surface of the member before the leading edge reaches the plurality of apertures.
An inkjet printhead array comprising:
- a plurality of printheads arranged to eject ink in a continuous line across media passing by the plurality of printheads, each printhead in the plurality of printheads including:
- a housing;
- an aperture plate having a plurality of apertures in an aperture area through which inkjet ejectors eject ink onto media moving past the inkjet ejectors in a first direction;
- and
- a pair of members extending from a surface of the housing for each printhead, each member extending along a length of the aperture area on a side of the aperture area that is opposite another side of the aperture along which the other member extends, each member having a first end, a second end, and a length between the first end and the second end that is aligned with the first direction, and each member in the pair of members having a ramp at the first end of the member that slopes from the surface of the housing to a surface of the member that is vertically displaced from the surface of the housing and the ramp extends along a portion, but not all, of the length of the member to enable the ramp to engage a leading edge of media moving in the first direction to be lifted by the ramp to the vertically displaced surface of the member before the leading edge reaches the plurality of apertures.
2 more elements
Dependencies are inferred from the claim text.