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公开(公告)号：US11724489B2
公开(公告)日：2023-08-15
申请号：US17366473
申请日：2021-07-02
IPC分类号： B41J2/045
CPC分类号： B41J2/04508
摘要： An inkjet recording apparatus includes a recording head having a plurality of nozzles for ejecting ink, an endless conveying belt conveying a recording medium and having a plurality of openings through which ink is passed when the recording head performs flushing, a reading sensor for reading, in a first reading mode, information on openings in the conveying belt and, in a second reading mode, information on the recording medium on the conveying belt, an ejection control portion for controlling ejection of the ink from the recording head based on at least one of the information on the openings and the information on the recording medium, and a reading mode switching control portion for switching the reading mode of the reading sensor between the first and second reading modes.
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公开(公告)号：US11265436B2
公开(公告)日：2022-03-01
申请号：US17177681
申请日：2021-02-17
发明人： Katsuo Mikashima
摘要： An image forming apparatus includes a display panel, a sheet conveying passage, a reading unit, a light source, a chassis, and a controller. The reading unit includes a light transmitting plate and a conveying image sensor. The conveying image sensor reads a conveyed sheet, which is a sheet to print on. The chassis has a cleaning hole in which to insert a cleaning rod for rubbing the light-transmitting plate. In a maintenance mode, the controller turns on the light source, and makes the display panel display a graph showing the pixel values of the pixels included in conveyed-and-read image data acquired by reading with the conveying image sensor.
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3.发明授权Image forming apparatus and control method of image forming apparatus having a normal mode and a power saving mode 有权具有正常模式和省电模式的图像形成装置的图像形成装置和控制方法公开(公告)号：US08941858B2
公开(公告)日：2015-01-27
申请号：US14279124
申请日：2014-05-15
发明人： Katsuo Mikashima
CPC分类号： H04N1/00896 , H04N1/00904
摘要： An image forming apparatus has a normal mode and a power saving mode. The image forming apparatus includes a printing portion for performing printing, a communication portion for performing a communication process, a system controller for performing operation control of the apparatus and a process concerning communication, and a power supply controller configured to supply power to the printing portion, the system controller, and the communication portion in the normal mode while in the power saving mode, to supply power to the communication portion but to stop power supply to the printing portion. The system controller performs the process concerning communication during the power saving mode, and the power supply controller adjusts a length of a stop time so that average power consumption of the image forming apparatus does not exceed a permissible maximum power, so as to temporarily restore the system controller during the power saving mode.
摘要翻译： 图像形成装置具有正常模式和省电模式。 图像形成装置包括用于执行打印的打印部分，用于执行通信处理的通信部分，用于执行设备的操作控制的系统控制器和关于通信的处理;以及电源控制器，被配置为向打印部分 ，系统控制器和通信部分，在正常模式下，在省电模式下，向通信部供电，但停止对打印部的供电。 系统控制器执行关于在省电模式期间的通信的处理，并且电源控制器调整停止时间的长度，使得图像形成装置的平均功耗不超过允许的最大功率，以便暂时恢复 系统控制器在省电模式。
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公开(公告)号：US20230055061A1
公开(公告)日：2023-02-23
申请号：US17885861
申请日：2022-08-11
发明人： Katsuo Mikashima
摘要： A print engine physically prints an image to be printed on a print sheet in an inkjet manner. A correction processing unit performs a correction process for a specific image column range corresponding to a configuration or a status of the print engine. Further, when performing duplex printing on first and second surfaces of the print sheet, the correction processing unit performs an image shrinking process for an image to be printed on the second surface in accordance with shrinking the print sheet due to ink ejection to the first surface, and Furthermore, the correction processing unit selects an image column range other than the specific image column range in the image to be printed on the second surface as a target image column range for which the image shrinking process should be performed.
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公开(公告)号：US10262248B2
公开(公告)日：2019-04-16
申请号：US15695699
申请日：2017-09-05
发明人： Katsuo Mikashima
摘要： An image forming apparatus includes a storage unit, a connector including a power supply terminal, a power supply unit for generating an operating voltage, a switch for turning on and off application of the operating voltage to the power supply terminal, a capacitor connected between the power supply terminal and the switch, and a control circuit configured to start up when a reset signal is changed. When the main power supply is turned on, the switch is temporarily turned on, and the reset signal is changed after the switch is turned off. After a start-up process is started, the control circuit interrupts the start-up process when recognizing that there is a connected device based on a result of comparison between a capacitor voltage and a threshold voltage.
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公开(公告)号：US11718091B2
公开(公告)日：2023-08-08
申请号：US17365640
申请日：2021-07-01
CPC分类号： B41J2/04573 , B41J2/04586 , H04N1/0057 , H04N1/00734 , H04N1/00745 , H04N1/00795 , H04N2201/0082
摘要： An ink ejection timing adjustment method on an inkjet recording apparatus includes an information acquiring step of acquiring at least recording medium information with a reading sensor, a printing step of printing a test pattern on a recording medium on a conveying belt, a calculating step of calculating a delay time by adding to a default set time a correction time corresponding to a correction value for ink ejection timing entered based on the printed position of the test pattern, and a setting step of setting the delay time as a predetermined time at the lapse of which after, as a result of the conveying belt turning, an opening passes a reading position a recording head starts to eject ink to the opening.
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公开(公告)号：US20220227144A1
公开(公告)日：2022-07-21
申请号：US17574954
申请日：2022-01-13
发明人： Katsuo Mikashima
摘要： An image forming apparatus includes a transportation belt, a print engine, and an ejection timing control unit. The transportation belt transports a print sheet. The print engine ejects ink onto the print sheet. The ejection timing control unit adjusts an ink ejection timing of the print engine. The transportation belt includes a flushing opening part. The print engine repeatedly performs ink flushing to the flushing opening part at predetermined timings. Further the ejection timing control unit derives an adjustment amount for the ink ejection timing of the print engine on the basis of: a number of the ink ejection timings in a period from a previous flushing time to a current flushing time, a distance from the flushing opening part for the flushing at the previous flushing time to the flushing opening part for the flushing at the current flushing time, and a print resolution.
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公开(公告)号：US20190308410A1
公开(公告)日：2019-10-10
申请号：US16374540
申请日：2019-04-03
发明人： Katsuo Mikashima , Kenichi Satake
IPC分类号： B41J2/045
摘要： A first storage portion stores, in advance, first reference voltage values respectively for ink ejection portions, the first reference voltage values corresponding to a predetermined first image density value. A second storage portion stores, in advance, voltage values that are different from each other, and measurement values that indicate image densities respectively corresponding to the voltage values. A voltage value calculating portion, at a predetermined change timing for changing image density, calculates second reference voltage values respectively for the ink ejection portions based on the voltage values and the measurement values, the second reference voltage values corresponding to a second image density value that is different from the first image density value. A voltage switching portion switches driving voltages that are applied to the ink ejection portions, from driving voltages having the first reference voltage values to driving voltages having the second reference voltage values.
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公开(公告)号：US09693182B2
公开(公告)日：2017-06-27
申请号：US15280453
申请日：2016-09-29
发明人： Katsuo Mikashima
CPC分类号： H04W4/80 , H04L67/306 , H04N1/00928 , H04N1/32101 , H04N1/32358 , H04N2201/006 , H04N2201/3202 , H04W88/08
摘要： An image forming apparatus includes a near field communication portion including a nonvolatile memory and a processing portion, the nonvolatile memory stores information indicating whether or not the output of log information is allowed and when the output of the log information is allowed, the processing portion performs start-up processing while outputting the log information whereas when the output of the log information is not allowed, the processing portion performs the start-up processing without outputting the log information, and a near field communication portion stores the log information output from the processing portion in the nonvolatile memory.
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公开(公告)号：US20240326447A1
公开(公告)日：2024-10-03
申请号：US18614625
申请日：2024-03-22
发明人： Katsuo Mikashima
IPC分类号： B41J2/165 , B41J2/045 , B41J2/21 , B41J29/393
CPC分类号： B41J2/16579 , B41J2/04505 , B41J2/2142 , B41J2029/3935
摘要： A line sensor includes plural sensor chips and a gap between adjacent two sensor chips. In a test pattern image, a thin line is formed by ink ejected from a nozzle. Further, the line sensor scans the test pattern image on a sheet slanted from a transportation direction of the sheet and generates a test pattern scanned image. An ejection malfunction determination unit determines densities at at least two secondary-scanning-directional positions at a primary-scanning-directional position corresponding to each nozzle in the test pattern scanned image, and determines whether the nozzle is an ejection malfunction nozzle or not on the basis of the determined densities. Here, a slant angle of the sheet is set such that a primary-scanning-directional distance between two positions in the test pattern image corresponding to the two secondary-scanning-directional positions is larger than an arrangement interval of sensor pixels in the sensor chip.
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