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公开(公告)号：US10256711B2
公开(公告)日：2019-04-09
申请号：US15878485
申请日：2018-01-24
申请人： KONICA MINOLTA, INC.
摘要： A power control apparatus that supplies an AC current to a load and adjusts a current amount by setting a portion of a phase range among each of half-wave periods of the AC current to be supplied as a conduction angle and setting the remainder as a non-conduction angle, includes: a reference value determiner that defines a period across a plurality of half-wave periods as a current determination period and that determines a reference value of the conduction angle; and a distribution processor that determines a distribution value to distribute the conduction angle and performs current amount adjustment by distributed conduction angles, wherein the distribution processor determines the distribution value within one current determination period such that the value includes a positive distribution value and a negative distribution value, and an average value of the distributed conduction angles is within ±2.5% with respect to the reference value.
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公开(公告)号：US09389552B2
公开(公告)日：2016-07-12
申请号：US14642181
申请日：2015-03-09
申请人： KONICA MINOLTA INC.
IPC分类号： G03G15/20
CPC分类号： G03G15/2039
摘要： An image forming apparatus includes: a sheet feeding unit configured to feed a plurality of sheets to an image forming unit one by one; the image forming unit configured to form a toner image based on image data; a fixing unit configured to fix the toner image formed on each sheet by the image forming unit with a fixing member, the fixing unit including the fixing member configured to be brought into contact with each sheet supplied from the image forming unit and heat each sheet; a measuring unit configured to measure a temperature of the fixing member; and a control unit configured to instruct the fixing unit to start and stop a temperature increasing operation, and provide the image data to the image forming unit, wherein the control unit includes: a temperature drop rate calculating unit; a temperature rise rate predicting unit; and an instructing unit.
摘要翻译： 图像形成装置包括：片材进给单元，被配置为将多张片材一个一个地供给到图像形成单元; 所述图像形成单元被配置为基于图像数据形成调色剂图像; 固定单元，其被构造成通过固定构件将由图像形成单元形成的调色剂图像固定，所述定影单元包括固定构件，其被配置为与从图像形成单元供应的每个片材接触并加热每个片材; 测量单元，被配置为测量所述固定构件的温度; 以及控制单元，被配置为指示定影单元启动和停止升温操作，并将图像数据提供给图像形成单元，其中控制单元包括：温度降低率计算单元; 温升预测单元; 和指导单位。
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公开(公告)号：US09979852B2
公开(公告)日：2018-05-22
申请号：US15447902
申请日：2017-03-02
申请人： Konica Minolta, Inc.
CPC分类号： H04N1/02865 , H04N1/00734 , H04N1/0285 , H04N1/02855 , H04N1/02895 , H04N1/04 , H04N2201/0094
摘要： An image reading apparatus includes: three or more light sources configured to each emit light; a light receiving unit including a common light receiving surface configured to detect each light emitted; and an image generation unit configured to cause the three or more light sources to be switched over in a predetermined order and emit the corresponding light, and generate an image read from a document, wherein at least one of the three or more light sources includes a white light source and an optical filter, and the optical filter is configured such that a half-value width of a wavelength with respect to a maximum intensity of a spectral characteristic of the emitted light after transmission is wider than a half-value width of a wavelength with respect to a maximum intensity of the spectral characteristic of the light emitted from at least one of the other light sources.
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4.发明授权Image forming apparatus, image forming method, and non-transitory computer readable medium storing control program 有权图像形成装置，图像形成方法以及存储控制程序的非瞬时计算机可读介质公开(公告)号：US09335679B2
公开(公告)日：2016-05-10
申请号：US14557971
申请日：2014-12-02
申请人： Konica Minolta, Inc.
CPC分类号： G03G15/2039 , G03G15/5025
摘要： An image forming apparatus includes an image forming section to form a toner image and transfer the toner image to a recording medium and a fixing section to heat the recording medium transferred with the toner image and further an image analyzing section to extract a density value or a size value of an imaging object included in an image, and a temperature determining section to determine a minimum fixing temperature based on the density value or size value of the imaging object included in a page image. The temperature determining section determines the minimum fixing temperature to be lower when a highest one of the density values is lower than when the highest value is higher or determines the minimum fixing temperature to be lower when a largest one of the size values is smaller than when the largest size value is larger.
摘要翻译： 图像形成装置包括图像形成部分，用于形成调色剂图像并将调色剂图像转印到记录介质和固定部分，以加热用调色剂图像转印的记录介质，并且还提供图像分析部分以提取浓度值或 包括在图像中的成像对象的尺寸值和温度确定部分，用于基于包括在页面图像中的成像对象的浓度值或尺寸值来确定最小定影温度。 当最高的一个密度值低于最高值的最高值时，温度确定部分将最小定影温度确定为较低，或者当最大的一个尺寸值小于 最大尺寸值越大。
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公开(公告)号：US10139767B2
公开(公告)日：2018-11-27
申请号：US15176462
申请日：2016-06-08
申请人： KONICA MINOLTA, INC.
IPC分类号： G03G15/00
摘要： An image forming apparatus that transfers an image from an image carrier onto a sheet passing between the image carrier rotating and a transfer member includes a fixing unit configured to thermally fix the image on the sheet while nipping and conveying the sheet with a pair of fixing members after the transfer, at least one of the fixing members rotating; a measuring unit configured to measure surface movement speed of the sheet in a non-contact manner while the sheet is being conveyed by the fixing members; and a control unit configured to control rotation speed of the fixing members in accordance with a result of the measurement, to adjust speed of conveyance of the sheet to a target speed determined beforehand for peripheral speed of the image carrier, the control being performed while the sheet being conveyed is in contact with the transfer member and the fixing members.
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公开(公告)号：US09310727B2
公开(公告)日：2016-04-12
申请号：US14559015
申请日：2014-12-03
申请人： Konica Minolta, Inc.
IPC分类号： G03G15/20
CPC分类号： G03G15/2039
摘要： An image forming apparatus forming toner images sequentially on recording sheets transported at intervals, and thermally fixing the toner images by passing the recording sheets through a fixing position on a heating roller. The target fixing temperature is determined according to information of an image on each page. When a first fixing temperature for a given page is higher than a second fixing temperature for the succeeding page and the difference therebetween is greater than a predefined value, part or all of a first period, during which the thermal fixing operation for the given page is performed, and a second period, which corresponds to an interval between the two pages, are reserved for raising the surface temperature by the difference, and temperature control is performed during the reserved periods such that the surface temperature reaches the second temperature before the thermal fixing operation for the succeeding page starts.
摘要翻译： 一种图象形成装置，在间隔传送的记录片材上顺序地形成调色剂图像，并且通过使记录片材通过加热辊上的固定位置来热定影调色剂图像。 目标定影温度根据每页上的图像的信息来确定。 当给定页面的第一定影温度高于后续页面的第二定影温度并且它们之间的差异大于预定值时，第一周期的部分或全部是给定页面的热定影操作 并且对应于两页之间的间隔的第二周期被保留用于通过差异来提高表面温度，并且在预留时段期间执行温度控制，使得表面温度在热定影之前达到第二温度 启动后续页面的操作。
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