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公开(公告)号：US11541667B2
公开(公告)日：2023-01-03
申请号：US17052094
申请日：2018-08-13
摘要： An example printing fluid circulation circuit for a printing system comprises a first circuit port to supply printing fluid to, or receive printing fluid from, a first fluid port of a printhead and a second circuit port to supply printing fluid to, or receive printing fluid from, a second fluid port of a printhead. The printing fluid circulation circuit is to operate in a first mode to concurrently supply printing fluid from the first reservoir to the first circuit port and from the second circuit port to a second reservoir, and in a second mode to concurrently supply printing fluid from the first reservoir to the second circuit port and from the first circuit port to the second reservoir.
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公开(公告)号：US10207499B2
公开(公告)日：2019-02-19
申请号：US15544400
申请日：2015-02-27
摘要： Examples associated with drop velocity aberrancy detection are disclosed. One example includes firing ink through nozzles of a print-head past sensors to identify drop velocities of the nozzles. A target drop velocity is selected based on the drop velocities of the nozzles. An aberrant nozzles is detected when a nozzle has a drop velocity that deviates from the target drop velocity by a selected threshold. The aberrant nozzle is deactivated, and a good nozzle that will travel over locations traversed by the aberrant nozzle is configured to print portions of a job that would have been printed by the aberrant nozzle.
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公开(公告)号：US10850521B2
公开(公告)日：2020-12-01
申请号：US15765810
申请日：2015-10-29
IPC分类号： B41J2/175
摘要： Herein is disclosed an ink storage unit. The ink storage unit may comprise first and second reservoirs, each having a variable internal volume; a transfer system to transfer ink between the first and second reservoirs such that as ink is transferred from the first reservoir to the second reservoir, the internal volume of the first reservoir decreases and the internal volume of the second reservoir increases.
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公开(公告)号：US10828899B2
公开(公告)日：2020-11-10
申请号：US16696714
申请日：2019-11-26
IPC分类号： B41J2/165 , B41J25/34 , B41J2/21 , B41J25/316
摘要： Example methods for the maintenance of printheads are provided, the printheads comprising a reservoir containing a printing fluid with particles in suspension, and a nozzle plate. Example methods may comprise capping the nozzle plate of the printhead, and rotating the capped printhead. Example maintenance devices for printheads are also provided, comprising a support with a socket to attach a printhead to the support, a drive unit to rotate the support about a rotation axis, and a control unit connected to the drive unit to perform a predetermined rotation cycle.
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公开(公告)号：US20200094559A1
公开(公告)日：2020-03-26
申请号：US16696714
申请日：2019-11-26
IPC分类号： B41J2/165 , B41J2/21 , B41J25/34 , B41J25/316
摘要： Example methods for the maintenance of printheads are provided, the printheads comprising a reservoir containing a printing fluid with particles in suspension, and a nozzle plate. Example methods may comprise capping the nozzle plate of the printhead, and rotating the capped printhead. Example maintenance devices for printheads are also provided, comprising a support with a socket to attach a printhead to the support, a drive unit to rotate the support about a rotation axis, and a control unit connected to the drive unit to perform a predetermined rotation cycle.
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公开(公告)号：US20190070860A1
公开(公告)日：2019-03-07
申请号：US15762020
申请日：2016-01-29
IPC分类号： B41J2/175
摘要： In one example, there is disclosed a print device 100 comprising: a print fluid supply pathway 102 extending from a reservoir inlet 104 to a printhead outlet 106; a valve 108 in the print fluid supply pathway 102 downstream of the reservoir inlet 104: a pressure sensor 110 to monitor print fluid pressure upstream of the valve 108; a pressure sensor controller 112 to temporarily close the valve 108 for a closed period and monitor print fluid pressure using the pressure sensor 110 during the closed period; and a print operation controller 114 to control printing operations of the print device 100 so that in use a printing operation continues and print fluid is discharged from a printhead 234 during a closed period of the valve 108 in the respective print fluid supply pathway 102.
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公开(公告)号：US10112386B2
公开(公告)日：2018-10-30
申请号：US15327954
申请日：2014-07-30
摘要： A printer is disclosed. The printer spits printing fluid from nozzles using a spit pattern. The spit pattern is non-uniform along the spit pattern length.
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公开(公告)号：US20170173963A1
公开(公告)日：2017-06-22
申请号：US15116881
申请日：2014-02-19
发明人： Gonzalo Gaston Llado , Marta Coma Vives , Antonio Gracia Verdugo , Joan Albert Jorba Closa , Ezequiel Jordi Rufes Bernad , Xavier Gras Gros
IPC分类号： B41J2/165
CPC分类号： B41J2/16535 , B41J2/16538 , B41J2/16541 , B41J2/16547 , B41J2/16588 , B41J2002/1655 , B41J2002/16558 , B41J2002/16573
摘要： In one example, a method for wiping the face of a printhead includes wiping across the face of the printhead and then wiping along the face of the printhead with a web of cleaning material. In another example, a wiper for wiping a face of a printhead includes a rotatable shaft having an axis of rotation and a helical blade affixed to the shaft. The helical blade is simultaneously rotatable on the shaft against the face of the printhead and translatable along the face of the printhead in a direction parallel to the axis of rotation.
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公开(公告)号：US12049089B2
公开(公告)日：2024-07-30
申请号：US18067143
申请日：2022-12-16
IPC分类号： B41J2/18
CPC分类号： B41J2/18
摘要： An example printing fluid circulation system includes a first circuit to circulate a printing fluid through a printhead in a first direction and a second circuit to circulate the printing fluid through the printhead in a second direction opposite to the first direction. The first circuit is activated during a first mode to circulate the printing fluid from a first reservoir to a second reservoir. The second circuit is activated during a second mode different from the first mode to circulate the printing fluid from the first reservoir to the second reservoir.
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公开(公告)号：US11858277B2
公开(公告)日：2024-01-02
申请号：US17419530
申请日：2019-04-29
IPC分类号： B41J2/175
CPC分类号： B41J2/17566 , B41J2/1752 , B41J2002/17573
摘要： A printing apparatus is disclosed. The printing apparatus comprises a rotating housing comprising a wall with an inner side defining a chamber and an outer side. The wall has a bore communicating the inner side and the outer side, and the chamber is to receive a fluid container. The printing apparatus also comprises a fix frame holding the rotating housing. The printing apparatus further comprises an optical sensor comprising an emitter to issue a detecting optical signal through the bore and a receiver to receive a detected optical signal associated to the detecting optical signal. The detected signal is sent to a controller to determine whether the fluid container is present in the rotating housing.
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