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公开(公告)号：US20140043394A1
公开(公告)日：2014-02-13
申请号：US13955138
申请日：2013-07-31
发明人： Tetsuya Ishikawa , Atsushi Saito , Shinya Asano , Takatoshi Nakano , Yutaka Kano
IPC分类号： B41J2/14
CPC分类号： B41J2/1433 , B41J2/14 , B41J2/175 , B41J3/60 , B41J29/13
摘要： An embodiment of this invention is directed to a printing apparatus capable of providing an output result without a printing density difference between two surfaces in two-sided printing. In the printing apparatus, one subtank is provided for each type of ink. The nozzles of printheads that receive inks supplied from the subtank and are used for printing of the front surface of a printing sheet and printing of the back surface, respectively, are aligned to almost the same level in the vertical direction, thereby making the water head pressures match.
摘要翻译： 本发明的一个实施例涉及一种能够提供输出结果而不会在双面打印中的两个表面之间的印刷密度差异的打印设备。 在打印装置中，为每种类型的墨提供一个子卡座。 接收从子容器提供并用于印刷印刷纸的前表面和背面印刷的打印头的喷嘴分别在垂直方向上对准几乎相同的水平，从而使水头 压力匹配。
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公开(公告)号：US11298937B2
公开(公告)日：2022-04-12
申请号：US16987689
申请日：2020-08-07
发明人： Yuhei Oikawa , Toshiyuki Chikuma , Yutaka Kano , Kohei Sato , Takuya Fukasawa
摘要： A method for inspecting an ink discharge status based on a temperature change of an energy generating element includes calculating a difference value between a value obtained by statistics of information indicating ink discharge statuses obtained for a plurality of nozzles close to a target nozzle and the information obtained for the target nozzle; comparing the calculated difference value with a predetermined threshold; and judging the ink discharge status for the target nozzle based on a result of the comparison. This enables to appropriately detect a nozzle which is in a discharge failure status due to an ink droplet adhered to a discharge surface of a printhead or the like.
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公开(公告)号：US11192357B2
公开(公告)日：2021-12-07
申请号：US16590454
申请日：2019-10-02
发明人： Yuhei Oikawa , Yutaka Kano , Kohei Sato , Takuya Fukasawa
IPC分类号： B41J2/045
摘要： Although a conventional method of inspecting an ink discharge state in which the temperature change of the heater is detected enables accurate and high-speed inspection, due to the situation in which the inspection was performed, appropriate post-processing depending on the situation cannot be executed based on a result of the inspection. Therefore, it is necessary to determine the ink discharge state in detail. A plurality of modes are provided in accordance with the purpose of performing an inspection of the ink discharge state, and a discharge inspection threshold is provided for each of these modes. By selectively executing or continuously executing these modes, it is possible to determine the ink discharge state in more detail.
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公开(公告)号：US20210060927A1
公开(公告)日：2021-03-04
申请号：US16987689
申请日：2020-08-07
发明人： Yuhei Oikawa , Toshiyuki Chikuma , Yutaka Kano , Kohei Sato , Takuya Fukasawa
IPC分类号： B41J2/045
摘要： A method for inspecting an ink discharge status based on a temperature change of an energy generating element comprises: calculating a difference value between a value obtained by statistics of pieces of information indicating ink discharge statuses obtained for a plurality of nozzles close to a target nozzle and the information obtained for the target nozzle; comparing the calculated difference value with a predetermined threshold; and judging the ink discharge status for the target nozzle based on a result of the comparison. This enables to appropriately detect a nozzle which is in a discharge failure status due to an ink droplet adhered to a discharge surface of a printhead or the like.
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公开(公告)号：US10766251B2
公开(公告)日：2020-09-08
申请号：US16361380
申请日：2019-03-22
发明人： Yuhei Oikawa , Toshiyuki Chikuma , Yutaka Kano , Kohei Sato
摘要： A printing apparatus, which uses a printhead including a circuit configured to inspect an ink discharge status of a selected nozzle using a temperature detection element, causes the printhead to inspect the ink discharge status by changing a threshold value for judging a detection result of the temperature detection element, in order to judge the ink discharge status in a state in which a heater in the selected nozzle is driven by each of a first pulse and a second pulse whose waveform is different from that of the first pulse, obtains first information about a change point where a judgment result obtained by the first pulse changes, and second information about a change point where a judgment result obtained by the second pulse changes, and sets the threshold value based on the first and second information.
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公开(公告)号：US20190299599A1
公开(公告)日：2019-10-03
申请号：US16294335
申请日：2019-03-06
发明人： Yutaka Kano , Yuhei Oikawa , Toshiyuki Chikuma
摘要： An image forming apparatus comprises: a printhead in which a plurality of element substrates for discharging a print material are arranged; a heating unit that maintains a temperature within the element substrate at a target temperature for each of the plurality of element substrates; a detection unit that detects the temperature within the element substrate for each of the plurality of element substrates; and a control unit that, for each of the plurality of element substrates, compares a highest temperature within the element substrate that is detected by the detection unit with a predetermined threshold, and if the highest temperature exceeds the predetermined threshold, sets the target temperature for the element substrate a temperature which is higher than a target temperature set when the highest temperature does not exceed the predetermined threshold and lower than the predetermined threshold.
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公开(公告)号：US09764562B2
公开(公告)日：2017-09-19
申请号：US14858374
申请日：2015-09-18
发明人： Fumiko Suzuki , Atsuhiko Masuyama , Norihiro Kawatoko , Yoshiyuki Honda , Yutaka Kano , Hitoshi Nishikori
CPC分类号： B41J2/2139 , B41J2/04543 , B41J2/04545 , B41J2/04546 , B41J2/04568 , B41J2/04573 , B41J2/0458 , B41J2/155 , B41J2/2135 , B41J2/2142 , B41J2/2146
摘要： In a printing apparatus including a printhead and a print control unit, wherein the printhead includes two nozzle arrays, each arranged in a first direction and including nozzles arranged along a second direction, the print control unit performs a first operation of expanding print data onto a memory, a second operation of selecting, for each nozzle array, some of the nozzles as non-driving nozzles and the remaining nozzles as driving nozzles, and a third operation of distributing the expanded print data to the two nozzle arrays such that dots corresponding to the non-driving nozzles of one nozzle array are printed by the driving nozzles of the other nozzle array.
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公开(公告)号：US09409390B1
公开(公告)日：2016-08-09
申请号：US15055996
申请日：2016-02-29
CPC分类号： B41J2/04573 , B41J2/04541 , B41J2/04543 , B41J2/04568 , B41J2/0458
摘要： According to an embodiment, a printing apparatus for printing an image on a print medium by a printhead while relatively scanning the printhead, and discharging ink from the printhead to the print medium is controlled as follows. That is, a time corresponding to a print resolution in a scanning direction of the printhead is divided into a plurality of times, and these print elements are time-divisionally driven by using the divided times as driving timings. At this time, it is controlled to form a plurality of groups each including a predetermined number of adjacent print elements of the print elements, and change the driving timings for each of the groups using the divided time as a unit.
摘要翻译： 根据实施例，用于在相对扫描打印头的同时通过打印头在打印介质上打印图像并将墨从打印头排出到打印介质的打印设备被如下控制。 也就是说，与打印头的扫描方向上的打印分辨率相对应的时间被分成多次，并且这些打印元件通过使用分频时间作为驱动定时被时分驱动。 此时，它被控制以形成多个组，每个组包括打印元素的预定数量的相邻打印元素，并且使用分割时间将每个组的驱动定时改变为一个单位。
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公开(公告)号：US20160096364A1
公开(公告)日：2016-04-07
申请号：US14858374
申请日：2015-09-18
发明人： Fumiko SUZUKI , Atsuhiko Masuyama , Norihiro Kawatoko , Yoshiyuki Honda , Yutaka Kano , Hitoshi Nishikori
IPC分类号： B41J2/045
CPC分类号： B41J2/2139 , B41J2/04543 , B41J2/04545 , B41J2/04546 , B41J2/04568 , B41J2/04573 , B41J2/0458 , B41J2/155 , B41J2/2135 , B41J2/2142 , B41J2/2146
摘要： A printing apparatus including a printhead and a print control unit, wherein the printhead includes two nozzle arrays, each arranged in a first direction and including nozzles arranged along a second direction, the print control unit performs a first operation of expanding print data onto a memory, a second operation of selecting, for each nozzle array, some of the nozzles as non-driving nozzles and the remaining nozzles as driving nozzles, and a third operation of distributing the expanded print data to the two nozzle arrays such that dots corresponding to the non-driving nozzles of one nozzle array are printed by the driving nozzles of the other nozzle array.
摘要翻译： 一种打印装置，包括打印头和打印控制单元，其中打印头包括两个喷嘴阵列，每个喷嘴阵列沿第一方向布置，并且包括沿着第二方向布置的喷嘴，打印控制单元执行将打印数据扩展到存储器上的第一操作 对于每个喷嘴阵列选择一些喷嘴作为非驱动喷嘴和剩余喷嘴作为驱动喷嘴的第二操作，以及将扩展的打印数据分配到两个喷嘴阵列的第三操作，使得对应于 一个喷嘴阵列的非驱动喷嘴由另一个喷嘴阵列的驱动喷嘴打印。
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公开(公告)号：US09085172B2
公开(公告)日：2015-07-21
申请号：US14585751
申请日：2014-12-30
发明人： Masao Kato , Kentarou Muro , Susumu Hirosawa , Yutaka Kano , Minoru Teshigawara , Yoshiaki Murayama , Shigeyasu Nagoshi , Minako Kato , Takeshi Murase , Satoshi Azuma
IPC分类号： B41J11/00
CPC分类号： B41J11/0015 , B41J2/16552 , B41J11/002 , B41J29/38
摘要： A first humidified gas is supplied through a first supply port to a sheet. A second humidified gas is supplied to a space where nozzles of an inkjet recording head are exposed through a second supply port located at a position closer to the recording heads than the first supply port, to increase atmosphere humidity in the space. The sheet portion having a moisture content increased by the humidification in advance is advanced into the space having the increased atmosphere humidity, to record on the sheet using the inkjet recording head. An amount of humidification with the first humidified gas is set according to at least one recording condition.
摘要翻译： 第一加湿气体通过第一供给口供给到片材。 第二加湿气体被供给到喷墨记录头的喷嘴通过位于比第一供给口更靠近记录头的位置的第二供应口露出的空间，以增加空间中的气氛湿度。 预先通过加湿使含水量增加的片材部分进入具有增加的气氛湿度的空间中，使用喷墨记录头在片材上记录。 根据至少一个记录条件设定与第一加湿气体的加湿量。
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