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公开(公告)号：US20210060937A1
公开(公告)日：2021-03-04
申请号：US16999425
申请日：2020-08-21
IPC分类号： B41J2/045
摘要： There is provided a head driving device for causing a head to discharge droplets. The device includes a drive circuit, a first drive waveform generation circuit, a second drive waveform generation circuit, and a correction circuit. The drive circuit is configured to drive the head based on a plurality of drive waveforms to discharge the droplets. The first drive waveform generation circuit configured to generate a first drive waveform of the plurality of drive waveforms. The second drive waveform generation circuit is configured to generate a second drive waveform of the plurality of drive waveforms. The correction circuit is configured to correct the first drive waveform and the second drive waveform with reference to an intermediate potential.
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公开(公告)号：US11312132B2
公开(公告)日：2022-04-26
申请号：US16999425
申请日：2020-08-21
摘要： There is provided a head driving device for causing a head to discharge droplets. The device includes a drive circuit, a first drive waveform generation circuit, a second drive waveform generation circuit, and a correction circuit. The drive circuit is configured to drive the head based on a plurality of drive waveforms to discharge the droplets. The first drive waveform generation circuit configured to generate a first drive waveform of the plurality of drive waveforms. The second drive waveform generation circuit is configured to generate a second drive waveform of the plurality of drive waveforms. The correction circuit is configured to correct the first drive waveform and the second drive waveform with reference to an intermediate potential.
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公开(公告)号：US09950513B2
公开(公告)日：2018-04-24
申请号：US15371261
申请日：2016-12-07
申请人： Tomohiro Mizutani , Takeo Shirato , Hiroki Takahashi , Katsuhiro Tobita , Ryuichi Hayashi , Yasuyuki Horie , Takatsugu Maeda , Hirohito Murate , Kohtaroh Ikegami , Kohsuke Inoue
发明人： Tomohiro Mizutani , Takeo Shirato , Hiroki Takahashi , Katsuhiro Tobita , Ryuichi Hayashi , Yasuyuki Horie , Takatsugu Maeda , Hirohito Murate , Kohtaroh Ikegami , Kohsuke Inoue
IPC分类号： B41J29/393 , B41J2/01 , B41J2/045 , B41J29/38
CPC分类号： B41J2/01 , B41J2/04508 , B41J29/38 , B41J29/393 , B41J2029/3935
摘要： A controller for a liquid discharging device generates a correction chart including a reference pattern and a correction part, using a liquid discharged from a liquid discharge head, the liquid discharge head having a plurality of nozzles that are arranged to form a nozzle array. The controller drives a predetermined number of the plurality of nozzles to form the reference pattern on the recording sheet along a direction of the nozzle array, the predetermined number being a number equal to or less than a total number of the plurality of nozzles of the nozzle array, and drives a number of the plurality of nozzles that is different than the predetermined number of nozzles driven in forming the reference pattern, to form the correction pattern on the recording sheet along the direction of the nozzle array.
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公开(公告)号：US09782968B2
公开(公告)日：2017-10-10
申请号：US15063747
申请日：2016-03-08
申请人： Katsuhiro Tobita
发明人： Katsuhiro Tobita
CPC分类号： B41J2/04581 , B41J2/16508 , B41J2/1652 , B41J2/16523 , B41J2/16585
摘要： A droplet discharging apparatus includes a recording head that includes pressure chambers, piezoelectric elements, and an in-head reservoir, provided near the pressure chambers; a liquid circulation unit that includes a liquid reservoir and circulates liquid between the in-head reservoir and the liquid reservoir; a drive waveform generation unit that generates a drive waveform that drives each of the piezoelectric elements; a remaining oscillation detection unit that detects remaining oscillation generated in at least one of the pressure chambers after driving the respective piezoelectric element; a status determining unit that determines a sedimentation status of a component in liquid in the in-head reservoir based on the detected remaining oscillation; and a control unit that controls a liquid circulation operation of the liquid circulation unit in order to dissolve the sedimentation status of the component in the liquid in the in-head reservoir based on the determined sedimentation status.
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公开(公告)号：US20170355205A1
公开(公告)日：2017-12-14
申请号：US15617224
申请日：2017-06-08
申请人： Katsuhiro Tobita , Koichi Kudo
发明人： Katsuhiro Tobita , Koichi Kudo
IPC分类号： B41J13/00
摘要： A conveyed object detector includes first and second image obtaining units disposed at first and second positions different in a conveyance direction, to image a conveyed object to obtain first and second image data; respectively; a recognition unit to recognize an object adhering to the first and second image obtaining units based on imaging at the first and second positions to generate first and second stain data, respectively; a removal unit to remove the first and second stain data from the first and second image data, respectively; and a calculator to generate at least one of a position, a movement amount, and a moving speed of the conveyed object based on first and second corrected image data. Each of the first and second image obtaining units include a light source, an area sensor, and an optical element disposed between the area sensor and the conveyed object.
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公开(公告)号：US20180272770A1
公开(公告)日：2018-09-27
申请号：US15926910
申请日：2018-03-20
申请人： Katsuhiro Tobita
发明人： Katsuhiro Tobita
IPC分类号： B41J25/00 , B41J2/045 , B41J25/304 , B65G47/26
CPC分类号： B41J25/001 , B41J2/04586 , B41J2/2146 , B41J11/0095 , B41J25/304 , B41J2025/008 , B65G47/268
摘要： A conveyance device includes a conveyor to convey a conveyed object in a conveyance direction, a head unit to perform an operation on the conveyed object, an actuator to move the head unit in a direction orthogonal to the conveyance direction, an actuator controller to control the actuator, a displacement sensor to detect a displacement amount representing an amount by which the head unit is moved by the actuator, and a controller. The controller is configured to calculate a detection result including at least one of a position of the conveyed object in the orthogonal direction, a speed of travel of the conveyed object, and a travel amount of the conveyed object. The controller is configured to calculate a command value based on the detection result and the displacement amount output from the displacement sensor, and output the command value to the actuator controller.
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公开(公告)号：US20210260899A1
公开(公告)日：2021-08-26
申请号：US17182138
申请日：2021-02-22
申请人： Katsuhiro Tobita , Yasuhiko Kachi , Yuuya Nakazawa
发明人： Katsuhiro Tobita , Yasuhiko Kachi , Yuuya Nakazawa
IPC分类号： B41J29/377 , H01L23/473 , H01L23/40 , F28F27/02
摘要： A cooling device includes a metal member, a cooling member, and a sheet-shaped thermal conductive member. The metal member thermally couples with an element that generates heat. The cooling member includes a channel for refrigerant to flow. The thermal conductive member includes an adhesive surface adhered to the metal member and a non-adhesive surface pressed against and thermally coupled in contact with the cooling member. The thermal conductive member and the cooling member are separable.
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公开(公告)号：US10682870B2
公开(公告)日：2020-06-16
申请号：US15617224
申请日：2017-06-08
申请人： Katsuhiro Tobita , Koichi Kudo
发明人： Katsuhiro Tobita , Koichi Kudo
摘要： A conveyed object detector includes first and second image obtaining units disposed at first and second positions different in a conveyance direction, to image a conveyed object to obtain first and second image data; respectively; a recognition unit to recognize an object adhering to the first and second image obtaining units based on imaging at the first and second positions to generate first and second stain data, respectively; a removal unit to remove the first and second stain data from the first and second image data, respectively; and a calculator to generate at least one of a position, a movement amount, and a moving speed of the conveyed object based on first and second corrected image data. Each of the first and second image obtaining units include a light source, an area sensor, and an optical element disposed between the area sensor and the conveyed object.
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9.发明授权公开(公告)号：US09586418B2
公开(公告)日：2017-03-07
申请号：US14922801
申请日：2015-10-26
申请人： Katsuhiro Tobita
发明人： Katsuhiro Tobita
CPC分类号： B41J11/0095 , B41J2/2146 , B41J25/001
摘要： A recording position control device includes head units, edge sensors, head movers, a controller, and a timer. The controller performs an original-point determination operation of moving the head units to an original point and to control the head movers to move the head units in a direction to correct meandering of a recording medium. The controller performs a second round of the original-point determination operation after performing a first round of the original-point determination operation. The timer measures, as a measurement time period, a time period from when the controller issues an execution command of the second round to when the controller receives a completion status of the second round. In a case in which the measurement time period is equal to or shorter than a first threshold time period, the controller determines that the original-point determination operation of the head units has failed to be normally executed.
摘要翻译： 记录位置控制装置包括头单元，边缘传感器，头移动器，控制器和计时器。 控制器执行将头单元移动到原始点的原点确定操作，并且控制头部移动器沿着校正记录介质的曲折的方向移动头单元。 在执行原始点确定操作的第一轮之后，控制器执行原始点确定操作的第二轮。 定时器作为测量时间段测量从控制器发出第二轮的执行命令到控制器接收到第二轮的完成状态的时间段。 在测量时间段等于或小于第一阈值时间段的情况下，控制器确定头单元的原点确定操作未能正常执行。
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