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公开(公告)号:US20180178524A1
公开(公告)日:2018-06-28
申请号:US15903331
申请日:2018-02-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Oscar Moya Rojo , Alejandro Mielgo , Jordi Bas
IPC: B41J2/165
CPC classification number: B41J2/16535 , B41J2/16544 , B41J2002/1655
Abstract: In an example, a print apparatus may include a print head assembly and a maintenance cartridge. An example maintenance cartridge may include a wiper system. An example wiper system may include a web wipe and a plurality of independently biased members adjacent each other with respect to a width of the web wipe. Another example wiper system may include a plurality of bias members, a plurality of carriers coupled to the plurality of bias members, and a plurality of rollers coupled to the plurality of carriers and located along a width of a wiping area.
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公开(公告)号:US11307514B2
公开(公告)日:2022-04-19
申请号:US17050468
申请日:2018-06-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor: Aleix Fort Filgueira , Alejandro Mielgo , Michel Georges Encrenaz
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.
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公开(公告)号:US20200156378A1
公开(公告)日:2020-05-21
申请号:US16616526
申请日:2017-07-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Jordi Bas , Alejandro Mielgo
IPC: B41J2/165
Abstract: With the purpose of providing an improved cleaning mechanism that accomplishes better results and that may be used in thermal and piezoelectric printing, it is dis-closed a method for cleaning a printhead comprising: moving a wiper along a plurality of nozzles of the printhead; and pressurizing the nozzles within the printhead, the pressurization of each nozzle causing ink to be expelled in an expelling direction; wherein a controller is to detect the position of the wiper and to selectively pressurize at least some of the nozzles for which the position of the wiper corresponds to its expelling direction.
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公开(公告)号:US09931839B1
公开(公告)日:2018-04-03
申请号:US15380125
申请日:2016-12-15
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Jose Francisco Bravo de Vega , Francisco Gomez , Jordi Bas , Alejandro Mielgo
CPC classification number: B41J2/16579 , B41J2/125 , B41J2/2142 , G01N21/47
Abstract: In some examples, a printhead drop detector comprises a plurality of drop detection units to detect any drops passing through a sampling volume between the radiation source and the radiation detector. A radiation detector of a first drop detection unit and a radiation source of a second drop detection unit is arranged on a first side of the sampling volume and a radiation source of the first drop detection unit and a radiation detector of the second drop detection unit is arranged on the second side of the sampling volume. The distance between the first drop detection unit and the second drop detection unit is based on an angle of a beam producible by the first radiation source such that the beam is wide enough to cross into a portion of the sampling volume corresponding with the second drop detection unit.
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公开(公告)号:US11007784B2
公开(公告)日:2021-05-18
申请号:US16616526
申请日:2017-07-31
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Jordi Bas , Alejandro Mielgo
IPC: B41J2/165
Abstract: With the purpose of providing an improved cleaning mechanism that accomplishes better results and that may be used in thermal and piezoelectric printing, it is dis-closed a method for cleaning a printhead comprising: moving a wiper along a plurality of nozzles of the printhead; and pressurizing the nozzles within the printhead, the pressurization of each nozzle causing ink to be expelled in an expelling direction; wherein a controller is to detect the position of the wiper and to selectively pressurize at least some of the nozzles for which the position of the wiper corresponds to its expelling direction.
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公开(公告)号:US20210103232A1
公开(公告)日:2021-04-08
申请号:US17050468
申请日:2018-06-15
Applicant: Hewlett-Packard Development Company, L.P.
Inventor: Aleix Fort Filgueira , Alejandro Mielgo , Michel Georges Encrenaz
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.
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公开(公告)号:US09956782B2
公开(公告)日:2018-05-01
申请号:US15263735
申请日:2016-09-13
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Oscar Moya Rojo , Alejandro Mielgo , Jordi Bas
IPC: B41J2/165
CPC classification number: B41J2/16535 , B41J2/16544 , B41J2002/1655
Abstract: In an example, a print apparatus may include a print head assembly and a maintenance cartridge. An example maintenance cartridge may include a wiper system. An example wiper system may include a web wipe and a plurality of independently biased members adjacent each other with respect to a width of the web wipe. Another example wiper system may include a plurality of bias members, a plurality of carriers coupled to the plurality of bias members, and a plurality of rollers coupled to the plurality of carriers and located along a width of a wiping area.
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公开(公告)号:US10279592B2
公开(公告)日:2019-05-07
申请号:US15903331
申请日:2018-02-23
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Oscar Moya Rojo , Alejandro Mielgo , Jordi Bas
IPC: B41J2/165
Abstract: In an example, a print apparatus may include a print head assembly and a maintenance cartridge. An example maintenance cartridge may include a wiper system. An example wiper system may include a web wipe and a plurality of independently biased members adjacent each other with respect to a width of the web wipe. Another example wiper system may include a plurality of bias members, a plurality of carriers coupled to the plurality of bias members, and a plurality of rollers coupled to the plurality of carriers and located along a width of a wiping area.
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公开(公告)号:US20180072061A1
公开(公告)日:2018-03-15
申请号:US15263735
申请日:2016-09-13
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Oscar Moya Rojo , Alejandro Mielgo , Jordi Bas
IPC: B41J2/165
CPC classification number: B41J2/16535 , B41J2/16544 , B41J2002/1655
Abstract: In an example, a print apparatus may include a print head assembly and a maintenance cartridge. An example maintenance cartridge may include a wiper system. An example wiper system may include a web wipe and a plurality of independently biased members adjacent each other with respect to a width of the web wipe. Another example wiper system may include a plurality of bias members, a plurality of carriers coupled to the plurality of bias members, and a plurality of rollers coupled to the plurality of carriers and located along a width of a wiping area.
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公开(公告)号:US09676183B1
公开(公告)日:2017-06-13
申请号:US15208178
申请日:2016-07-12
Applicant: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventor: Alejandro Mielgo , Francisco Gomez , Jordi Bas
CPC classification number: B41J2/0456 , B41J2/04586 , B41J2/16517 , B41J2/16579 , G01V8/20
Abstract: In one example in accordance with the present disclosure a drop detection device is described. The device includes an emitter member having a number of emitter cavities to relay a number of beams towards a number of detector cavities in a detector member. The device also includes a detector member that is spaced from the emitter member. The detector member includes a number of detector cavities to receive a number of beams from the number of emitter cavities. The device also includes a number of ribs coupled to both the emitter member and the detector member. The number of ribs space and align the emitter member and detector member and align the number of emitter cavities with the corresponding number of detector cavities.
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