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公开(公告)号：US11820136B2
公开(公告)日：2023-11-21
申请号：US17533777
申请日：2021-11-23
发明人： Yuhei Oikawa , Yutaka Kano , Kohei Sato , Takuya Fukasawa
IPC分类号： B41J2/045
CPC分类号： B41J2/0451 , B41J2/0458 , B41J2/04563
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：US11097535B2
公开(公告)日：2021-08-24
申请号：US16361377
申请日：2019-03-22
发明人： Yuhei Oikawa , Masashi Hayashi , Toshiyuki Chikuma , Yutaka Kano
摘要： A printing apparatus using a printhead that includes an inspection circuit for inspecting an ink discharge status for each nozzle performs an inspection processing. The apparatus selects a nozzle as a target of inspection of the ink discharge status, sets a threshold value for inspecting a detection result of a temperature detection element corresponding to the selected nozzle, and uses the inspection circuit and the set threshold value. The apparatus receives, from the printhead, an inspection result for the selected nozzle, determines, based on the received inspection result, a threshold value to be used by the inspection circuit for inspecting the discharge status of the selected nozzle in a subsequent inspection, and stores the determined threshold value in a memory.
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公开(公告)号：US20190299601A1
公开(公告)日：2019-10-03
申请号：US16361377
申请日：2019-03-22
发明人： Yuhei Oikawa , Masashi Hayashi , Toshiyuki Chikuma , Yutaka Kano
摘要： According to an embodiment of this invention, a printing apparatus using a printhead that includes an inspection circuit for inspecting an ink discharge status for each nozzle performs the following processing. The apparatus selects a nozzle as a target of inspection of the ink discharge status, sets a threshold value for inspecting a detection result of a temperature detection elements corresponding to the selected nozzle, and uses the inspection circuit and the set threshold value. The apparatus receives, from the printhead, an inspection result for the selected nozzle, determines, based on the received inspection result, a threshold value to be used by the inspection circuit for inspecting the discharge status of the selected nozzle in a subsequent inspection, and stores the determined threshold value in a memory.
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公开(公告)号：US10127481B2
公开(公告)日：2018-11-13
申请号：US15163084
申请日：2016-05-24
发明人： Hidehiko Kanda , Yutaka Kano , Eiji Komamiya , Takeshi Yazawa , Ayako Ohta
摘要： With respect to an area quantized by using an area of part in a quantization pattern and also without using an area of the other part in the quantization pattern in quantized data, a mask pattern part corresponding to the area of the part among mask pattern parts constituted by dividing a mask pattern is applied.
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公开(公告)号：US09044952B2
公开(公告)日：2015-06-02
申请号：US14098288
申请日：2013-12-05
发明人： Takeshi Murase , Masao Kato , Shigeyasu Nagoshi , Minako Kato , Minoru Teshigawara , Yoshiaki Murayama , Susumu Hirosawa , Yutaka Kano , Satoshi Azuma , Kentarou Muro
IPC分类号： B41J29/393 , B41J2/165 , B41J2/045 , B41J2/21 , H04N1/00
CPC分类号： B41J2/16579 , B41J2/0451 , B41J2/125 , B41J2/2139 , B41J2/2142 , H04N1/00015 , H04N1/00037 , H04N1/00063 , H04N1/00087
摘要： A process of detecting a defective recording element and a process of correcting the defective recording element are performed with appropriate processing loads. When the detection process and the correction processes are performed with small loads, for example, at a time of recording, a resolution used for reading an inspection pattern is set lower than that set in a case where the processes can be performed with small loads, for example, at down time before recording. The reading resolution to be set may be determined by an apparatus in accordance with a processing load or may be arbitrarily determined by a user.
摘要翻译： 以适当的处理负荷进行检测缺陷记录元件的处理和校正有缺陷的记录元件的处理。 当以小负载执行检测处理和校正处理时，例如在记录时，将用于读取检查图案的分辨率设置为低于可以以小负载执行处理的情况下设置的分辨率， 例如，在记录之前的停机时间。 要设置的读取分辨率可以由根据处理负载的装置确定，或者可以由用户任意确定。
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公开(公告)号：US08919906B2
公开(公告)日：2014-12-30
申请号：US14039452
申请日：2013-09-27
发明人： Shigeyasu Nagoshi , Satoshi Azuma , Yoshiaki Murayama , Minoru Teshigawara , Susumu Hirosawa , Yutaka Kano , Takeshi Murase , Kentarou Muro , Masao Kato , Minako Kato
CPC分类号： B41J2/21 , B41J2/2056 , B41J2/2132 , B41J2/2146
摘要： The present invention provides a recording apparatus including recording heads each including a plurality of nozzle arrays that are arranged so as to overlap, wherein the width with which the overlapping portions of the recording heads for colors that are simultaneously used with a relatively high frequency overlap in an intersecting direction that intersects an array direction of nozzles is smaller than the width with which the overlapping portions of the recording heads for colors that are simultaneously used with a relatively low frequency overlap in the intersecting direction.
摘要翻译： 本发明提供了一种记录装置，包括：记录头，每个记录头包括多个喷嘴阵列，所述多个喷嘴阵列被布置成重叠，其中以相对高频率同时使用的用于颜色的记录头的重叠部分的重叠重叠的宽度 与喷嘴的排列方向相交的相交方向小于在相交方向上以相对低频同时使用的用于颜色的记录头的重叠部分重叠的宽度。
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公开(公告)号：US11691415B2
公开(公告)日：2023-07-04
申请号：US17698534
申请日：2022-03-18
发明人： Yuhei Oikawa , Toshiyuki Chikuma , Yutaka Kano , Kohei Sato , Takuya Fukasawa
CPC分类号： B41J2/0451 , B41J2/0454 , B41J2/04563 , B41J2/04565 , B41J2/04585 , B41J2/165 , B41J2/04 , B41J2/14427
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：US11351774B2
公开(公告)日：2022-06-07
申请号：US16897477
申请日：2020-06-10
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：US20200298555A1
公开(公告)日：2020-09-24
申请号：US16897477
申请日：2020-06-10
发明人： Yuhei Oikawa , Toshiyuki Chikuma , Yutaka Kano , Kohei Sato
IPC分类号： B41J2/045
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：US10308044B2
公开(公告)日：2019-06-04
申请号：US15989024
申请日：2018-05-24
发明人： Yutaka Kano , Yuhei Oikawa , Toshiyuki Chikuma
摘要： A recording apparatus includes a recording head that includes a plurality of recording devices containing ink, first and second heating devices, and first and second detection devices. The recording devices each generate energy for ejection of the ink, the first and second heating devices respectively heat the ink in a vicinity of recording devices located at first and second positions of the recording devices, and the first and second detection devices respectively detect temperatures in the vicinity of the recording devices located at the first and second positions. The recording apparatus includes an acquisition unit configured to acquire information relating to a representative temperature of the temperatures detected by the first and second detection devices, and a decision unit configured to decide an upper limit of driving power of each of the first and second heating devices.
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