-
公开(公告)号：US20220163914A1
公开(公告)日：2022-05-26
申请号：US17529733
申请日：2021-11-18
Applicant: KYOCERA Document Solutions Inc.
Inventor： Jun NAKAI
Abstract: An image forming apparatus includes a developing roller, a photoconductor drum, a density detector, a current detector, and a controller. The developing roller carries a toner. The photoconductor drum carries a toner patch. The density detector detects toner density of the toner patch. The current detector detects developing current flowing to the toner patch. The controller calculates an inclination of an approximate straight line approximating a relation between the toner density and the developing current. The developing roller develops three or more toner patches, different in toner density and different in developing current from one another, on the photoconductor drum. The controller calculates the inclination, using different mathematical expressions depending on whether three toner patches or four toner patches are provided.
-
公开(公告)号：US20220082973A1
公开(公告)日：2022-03-17
申请号：US17467154
申请日：2021-09-03
Applicant: KYOCERA Document Solutions Inc.
Inventor： Jun NAKAI
IPC: G03G15/00
Abstract: An image forming apparatus includes an image carrier, a developing device, a control unit, and a density measuring unit. An electrostatic latent image is formed on the surface of an image carrier. A developing device supplies toner to the image carrier and develops the electrostatic latent image formed on the image carrier to form a toner image. The density measuring unit measures the toner density of the plurality of first patch toner images formed by the developing device. The control unit calculates a relationship between the toner density of the plurality of first patch toner images measured by the density measuring unit and the applied voltage applied to the developing device when the plurality of first patch toner images are formed, and adjusts the applied voltage based on a calculation result.
-
公开(公告)号：US20240176274A1
公开(公告)日：2024-05-30
申请号：US18517032
申请日：2023-11-22
Applicant: KYOCERA Document Solutions Inc.
Inventor： Jun NAKAI , Hideji MIZUTANI , Takuto KUNIMASA
IPC: G03G15/00
CPC classification number: G03G15/6567 , G03G2215/0158
Abstract: An image forming apparatus includes an image carrier, an optical member, a drive device, a motive device, and a control device. On a surface of the image carrier, a scanning line is formed, through a scanning operation with scanning light. The optical member emits the scanning light to the image carrier. The drive device changes a posture of the optical member, to adjust a skew of the scanning line on the image carrier. The motive device drives the drive device. The control device controls the motive device. Further, the control device decides that at least one of the drive device and the motive device are malfunctioning, when a skew amount remains higher than a predetermined permissible value, despite changing the posture of the optical member a predetermined number of times, through control of the drive device by the motive device.
-
公开(公告)号：US20240364832A1
公开(公告)日：2024-10-31
申请号：US18640623
申请日：2024-04-19
Applicant: KYOCERA Document Solutions Inc.
Inventor： Jun NAKAI , Takuto KUNIMASA
CPC classification number: H04N1/3878 , H04N1/00018 , H04N1/00031 , H04N1/00045 , H04N1/00082 , H04N1/00254
Abstract: An optical scanning device includes a scanning optical system, a housing, a skew adjustment mechanism, and a control unit. The skew adjustment mechanism rotates a skew adjustment motor in a fixed direction, so as to periodically change position of an optical element. When rotating the skew adjustment motor by a rotation amount corresponding to a half period of position change of the optical element, average value of the position change of the optical element is substantially the same as average value of the position change of the optical element per one period. The control unit calculates rotation amount of the skew adjustment motor necessary for returning the optical element to the reference position, on the basis of rotation amounts of the skew adjustment motor at three points obtained by equally dividing the position change of the optical element per half period into two, and skew amounts.
-
公开(公告)号：US20220128924A1
公开(公告)日：2022-04-28
申请号：US17501551
申请日：2021-10-14
Applicant: KYOCERA Document Solutions Inc.
Inventor： Jun NAKAI
Abstract: An image forming apparatus includes: a developing roller; a photosensitive drum; a first measurement device that measures a blank portion current in a first line on the photosensitive drum which extends in a scanning direction of the photosensitive drum and on which no toner patch is formed; a second measurement device that measures a measuring development current in a second line on the photosensitive drum which extends in the scanning direction of the photosensitive drum and on which a toner patch is formed; and a control device that functions as a patch setter and a first calculator. The patch setter sets a patch width of the toner patch in the scanning direction of the photosensitive drum.
The first calculator calculates an actual development current based on a developable width of the photosensitive drum in the scanning direction, the patch width, the blank portion current, and the measuring development current.
-
公开(公告)号：US20140233973A1
公开(公告)日：2014-08-21
申请号：US14181370
申请日：2014-02-14
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Eiji GYOTOKU , Jun NAKAI , Masahito ISHINO
IPC: G03G15/00
CPC classification number: G03G21/0064 , G03G21/0094 , G03G21/20
Abstract: An image forming apparatus includes a heating element, an interior temperature/humidity detection section, and a controller. The heating element is conducted during connection of the image forming apparatus to an external power source to heat an image bearing member. The interior temperature/humidity detection section detects temperature and humidity in the interior of the image forming apparatus. The controller performs a refresh operation when a relative humidity calculated on the basis of the temperature and humidity detected by the interior temperature/humidity detection section immediately after the image forming apparatus is connected to the external power source is higher than the preset value. The refresh operation is an operation for supply of developer from a development device to the image bearing member and for polish of the surface of the image bearing member with the use of a polishing member.
Abstract translation: 图像形成装置包括加热元件，内部温度/湿度检测部和控制器。 在图像形成装置连接到外部电源以加热图像承载部件时，加热元件被传导。 内部温度/湿度检测部分检测图像形成装置内部的温度和湿度。 当在图像形成装置刚刚连接到外部电源之后，基于由内部温度/湿度检测部检测到的温度和湿度计算的相对湿度高于预设值时，控制器执行刷新操作。 刷新操作是将显影剂从显影装置供应到图像承载部件并且通过使用抛光部件对图像承载部件的表面进行抛光的操作。
-
7.发明申请IMAGE FORMING APPARATUS AND METHOD OF WARNING LIFE OF CHARGING ROLLER IN IMAGE FORMING APPARATUS 有权图像形成装置和图像形成装置中的充电辊的警告寿命的方法
公开(公告)号：US20150370207A1
公开(公告)日：2015-12-24
申请号：US14739747
申请日：2015-06-15
Applicant: KYOCERA Document Solutions Inc.
Inventor： Jun NAKAI
IPC: G03G15/00
CPC classification number: G03G15/553 , G03G15/0216 , G03G15/502 , G03G21/20
Abstract: An image forming apparatus includes a charging roller, a temperature sensor, a humidity sensor, a sampling part, a life consumption degree calculating part and a warning processing part. The sampling part executes temperature/humidity inputting process inputting temperature of the temperature sensor and humidity of the humidity sensor. The life consumption degree calculating part calculates a life consumption degree of the charging roller from a last time to a present time in the temperature/humidity inputting process by applying respective representative values of last and present inputted temperature and humidity into a model formula. The warning processing part outputs a warning when an addition value of the life consumption degrees exceeds a predetermined threshold value. The life consumption degree calculating part uses the model formula deriving larger life consumption degree in a case where the representative value of the temperature and the representative value of the humidity are respectively larger.
Abstract translation: 图像形成装置包括充电辊，温度传感器，湿度传感器，取样部，寿命消耗度计算部和警告处理部。 采样部分执行温度传感器的温度/湿度输入过程输入温度和湿度传感器的湿度。 寿命消耗度计算部分通过将最后和当前输入的温度和湿度的各个代表值应用到模型公式中来计算在温度/湿度输入过程中从上次到现在的充电辊的使用寿命。 当寿命消耗度的相加值超过预定阈值时，警告处理部分输出警告。 寿命消耗度计算部分使用在温度的代表值和湿度的代表值分别较大的情况下导出较大的寿命消耗程度的模型公式。
-
公开(公告)号：US20140233978A1
公开(公告)日：2014-08-21
申请号：US14179234
申请日：2014-02-12
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Jun NAKAI , Eiji GYOTOKU , Masahito ISHINO
IPC: G03G15/00
CPC classification number: G03G15/50 , G03G15/657 , G03G21/06
Abstract: An image forming apparatus includes an image bearing member, a charging unit, a laser scanning unit, a developing unit, a transfer member, a recording medium conveyance path, a cleaning unit, and a heating element. The recording medium conveyance path includes a resin member that forms a conveyance surface. The resin member has a concave portion at a location closer to the transfer member than to the image bearing member. The heating element for heating the image bearing member is accommodated in the concave portion. The heating element is disposed downstream from the contact point between the image bearing member and the transfer member in the conveyance direction in which a recording medium is conveyed through the recording medium conveyance path. The developing unit is located upstream from the contact point between the image bearing member and the transfer member in the conveyance direction of the recording medium.
Abstract translation: 图像形成装置包括图像承载部件，充电单元，激光扫描单元，显影单元，转印部件，记录介质输送路径，清洁单元和加热元件。 记录介质输送路径包括形成输送面的树脂部件。 树脂构件在比图像承载构件更靠近转印构件的位置处具有凹部。 用于加热图像承载部件的加热元件容纳在凹部中。 加热元件设置在图像承载部件和转印部件之间的接触点的下游，在输送方向上记录介质通过记录介质输送路径传送。 显影单元在记录介质的输送方向上位于图像承载部件和转印部件之间的接触点的上游。
-
9.发明申请
公开(公告)号：US20200183299A1
公开(公告)日：2020-06-11
申请号：US16702674
申请日：2019-12-04
Applicant: KYOCERA Document Solutions Inc.
Inventor： Jun NAKAI
IPC: G03G15/043 , G02B26/12 , G02B7/182
Abstract: An optical scanning device has an optical housing. A coupled Helmholtz resonator having a first resonance space and a second resonance space therein is disposed in the optical housing. A translucent partition wall, a first partition wall, and a second partition wall which extend from a bottom wall to a top wall of the optical housing are arranged in this order from an upstream side toward a downstream side on an optical path between a light source and a rotary polygonal mirror. The first and second resonance spaces are separated from each other by the three partition walls. One of the first and second resonance spaces resonates at a frequency of a rotational speed of a motor, and the other of the first and second resonance spaces resonates at a generated frequency of a wind noise generated by the rotary polygonal mirror.
-
公开(公告)号：US20140233977A1
公开(公告)日：2014-08-21
申请号：US14179156
申请日：2014-02-12
Applicant: KYOCERA DOCUMENT SOLUTIONS INC.
Inventor： Eiji GYOTOKU , Masahito ISHINO , Jun NAKAI
IPC: G03G15/00
Abstract: An image forming apparatus includes an image bearing member, a developing unit, a cleaning unit, and a heating element. The heating element for heating the image bearing member includes: a substrate having a length corresponding to an entire region of the image bearing member in a longitudinal direction of the image bearing member; and a plurality of resistor chips mounted on the substrate. At least either resistance values or spacing intervals of the resistor chips vary in a longitudinal direction of the substrate to ensure that the surface temperature distribution of the image bearing member heated by the heating element is uniform.
Abstract translation: 图像形成装置包括图像承载部件，显影单元，清洁单元和加热元件。 用于加热图像承载部件的加热元件包括：在图像承载部件的纵向方向上具有对应于图像承载部件的整个区域的长度的基板; 以及安装在基板上的多个电阻芯片。 至少电阻片的电阻值或间隔间隔在衬底的纵向方向上变化，以确保由加热元件加热的图像承载构件的表面温度分布是均匀的。
