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公开(公告)号：US20240364819A1
公开(公告)日：2024-10-31
申请号：US18637708
申请日：2024-04-17
发明人： Lin LU , Yuya OKAZAKI
IPC分类号： H04N1/00
CPC分类号： H04N1/00029 , H04N1/00061 , H04N2201/0001
摘要： A device diagnosis system includes an image forming apparatus, a portable terminal device, and an abnormal noise decision device. The portable terminal device collects an operating sound of the image forming apparatus, at a sound collecting position selected from a plurality of predetermined sound collecting positions relative to the image forming apparatus. The abnormal noise decision device (a) identifies a decision criterion corresponding to the sound collecting position, and (b) decides whether the operating sound contains an abnormal noise, on a basis of acoustic data of the operating sound collected, in accordance with the decision criterion identified.
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公开(公告)号：US20240361716A1
公开(公告)日：2024-10-31
申请号：US18648284
申请日：2024-04-26
发明人： Rina Kikugawa , Ryohei Tokunaga , Akihiro Kondo , Yuta Kitabayashi , Hiroki Kawasaki , Shunsaku Fujii , Yuto Masaoka
IPC分类号： G03G15/20
CPC分类号： G03G15/2053 , G03G15/2064 , G03G2215/2035
摘要： The fixing device includes: a rotatable endless fixing belt; a heater that heats the fixing belt; a holding member that holds the heater so that a front surface thereof is in contact with an inner peripheral surface of the fixing belt; and a pressure member that is pressed against the heater with the fixing belt therebetween and to form a pressure area between the pressure member and the fixing belt where a sheet to which a toner image has been transferred is heated and pressed. A uniform heating layer is formed on a rear side of the heater without any gaps.
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公开(公告)号：US20240359456A1
公开(公告)日：2024-10-31
申请号：US18641309
申请日：2024-04-19
发明人： Jun Nakano , Hiroomi Nakatsuji , Naoko Kawashima , Masato Usui
IPC分类号： B41J2/045
CPC分类号： B41J2/04508 , B41J2/0451
摘要： A recording head ejects ink using nozzles. A control unit determines nozzles corresponding to an image to be printed and causes the recording head to eject ink from the nozzles. A correction processing unit detects an ejection malfunction nozzle and performs a correction process corresponding to the ejection malfunction nozzles. The correction processing unit causes a secondary adjacent nozzle of the ejection malfunction nozzle to perform ink ejection with a first ink ejection amount if ink ejection of a primary adjacent nozzle of ejection malfunction nozzle is performed earlier than ink ejection of the secondary adjacent nozzle and causes the secondary adjacent nozzle to perform ink ejection with a second ink ejection amount if ink ejection of the primary adjacent nozzle is performed later than ink ejection of the secondary adjacent nozzle. Here, the second ink ejection amount is smaller than the first ink ejection amount.
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公开(公告)号：US12130578B2
公开(公告)日：2024-10-29
申请号：US18472828
申请日：2023-09-22
发明人： Masahiko Mizuno , Kazuki Yoshioka
CPC分类号： G03G21/1647 , G03G21/1676
摘要： An image forming apparatus includes a drum unit, a developing unit, a developing roller bearing, a guide portion, and an urging portion. The drum unit includes a photosensitive drum. The developing unit includes a developing roller. The developing roller bearing supports the developing roller and can move radially and rotate axially with respect to the developing unit. The guide portion is formed in the drum unit and guides the developing roller bearing in directions toward and away from the photosensitive drum. The urging portion urges the developing unit in such a direction that it presses the developing roller against the photosensitive drum. The developing unit includes a restriction portion that restricts the rotation of the developing roller bearing with respect to the developing unit within a predetermined range.
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公开(公告)号：US12129139B2
公开(公告)日：2024-10-29
申请号：US18249322
申请日：2021-10-20
发明人： Minoru Tokonami
CPC分类号： B65H29/22 , B65H45/00 , B65H2404/1441 , B65H2601/521 , B65H2801/06
摘要： A sheet post-processing apparatus (1) includes a processing tray (5), a sheet discharge port (7), a conveyance rollers pair (4), lower and upper discharge rollers (81), (82) and a discharge tray (9). When the sheet having a folded portion is stacked on the processing tray (5) with the folded portion downward, a controller rotates the lower and upper discharge rollers (81), (82) to advance the folded portion to the sheet discharge port (7), stops the lower discharge roller (81) before the folded portion passes the sheet discharge port (7), rotates the conveyance rollers pair (4) and the upper discharge roller (82) so as to convey the rear half portion to the downstream side until the sheet passes the conveyance rollers pair (4) and to form a deflection on the sheet, rotates the lower and upper conveyance rollers (81), (82) and then to stack the sheet on the processing tray (5).
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公开(公告)号：US20240353783A1
公开(公告)日：2024-10-24
申请号：US18639257
申请日：2024-04-18
发明人： Ayato MORIKAMI , Yasuaki SAKAMOTO , Masaru WATANABE , Yukiko KOTANI , Atsuki ITO , Makoto MATSUMOTO
IPC分类号： G03G15/00 , G03G15/043 , G03G15/06
CPC分类号： G03G15/5041 , G03G15/043 , G03G15/065 , G03G15/5045 , G03G15/5062 , G03G15/55 , G03G2215/00042 , G03G2215/00084 , G03G2215/047
摘要： An image forming apparatus includes an image forming portion, an exposure device, an image density sensor, and a control portion. The control portion can, by adjusting the development voltage based on the image density of a reference image and the amount of exposure from the exposure device, perform image density correction to adjust the image density. The control portion predicts the toner charge amount based on a formation condition of the reference image and the image density of the reference image and determines the timing of performing the image density correction next time based on the rate of change of the toner charge amount calculated using a first toner charge amount predicted when the image density correction was performed last time, a second toner charge amount predicted when the image density correction is performed this time, and the interval between the image density correction performed last time and this time.
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公开(公告)号：US20240351815A1
公开(公告)日：2024-10-24
申请号：US18641283
申请日：2024-04-19
发明人： Katsuhiko Hanamoto
CPC分类号： B65H29/22 , B65H31/02 , B65H2404/1521 , B65H2513/51
摘要： A postprocessing apparatus includes a processing tray on which a print sheet as a target of a postprocess is put, a stopper guide with which the print sheet on the processing tray makes contact, an intermediate roller, a registration mechanism, a guide mechanism, a driving device of the registration mechanism, and a transmission mechanism. The intermediate roller is configured to transport the print sheet. The registration mechanism is configured to move the incoming print sheet transported by the intermediate roller onto the processing tray and align print sheets on the processing tray. The guide mechanism is configured to guide the print sheet moved by the registration mechanism toward the stopper guide. The transmission mechanism is configured to transmit driving force of the driving device to the guide mechanism with a delay.
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公开(公告)号：US20240351345A1
公开(公告)日：2024-10-24
申请号：US18635263
申请日：2024-04-15
CPC分类号： B41J2/19 , B41J2/17556 , B41J2/17566
摘要： A degassing device removes air dissolved in a liquid under a pressure decreased atmosphere, and includes a liquid tank, a pressure decreasing device, a circulation flow pass, a circulation device, and a variable mechanism. The liquid tank stores the liquid. The pressure decreasing device decreases pressure in the liquid tank. The circulation flow pass communicates different positions of the liquid tank. The circulation device circulates the liquid through the circulation flow pass. The variable mechanism changes a height of an inlet port from the circulation flow pass to the liquid tank in accordance with a height of a liquid surface in the liquid tank.
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公开(公告)号：US20240351330A1
公开(公告)日：2024-10-24
申请号：US18639356
申请日：2024-04-18
发明人： Yoshiya KUSUNOKI , Yuzuru YUASA , Yusuke TAMEKUNI
IPC分类号： B41J2/025 , B41J2/165 , B41J29/393
CPC分类号： B41J2/025 , B41J2/16505 , B41J29/393
摘要： The inkjet recording apparatus includes a recording head, a cap member, a humidifying part for humidifying interior of the cap member, a cap moving mechanism, a controller, and a storage part. The storage part has stored a non-capping period table in which a number of vibrations of ink level within each nozzle is increased based on a non-capping period of an ink ejection surface, and a capping period table in which the number of vibrations is decreased based on a capping period of the ink ejection surface. In response to respective lengths of the non-capping period and the capping period from an end of ink ejection until a start of next ink ejection, the controller sets the number of vibrations at a start time of next ink ejection by using the non-capping period table and the capping period table.
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公开(公告)号：US12126781B2
公开(公告)日：2024-10-22
申请号：US18394071
申请日：2023-12-22
CPC分类号： H04N1/605 , G06K15/1802 , H04N1/6097
摘要： A color printing system manages ICC profiles by controlling ink use without performing the ICC profile creation operations. To obtain an ink limit for an ICC profile, a table associated with the ICC profile is parsed to determine the ink limit. The ink limit is decreased or increased. For an ink limit decrease, a color over the decreased ink limit is adjusted to meet the new ink limit. The ICC profile is updated accordingly. For an ink limit increase, the combination of primary colors are boosted by a percentage amount. Checks are made with regard to the volume-based ink limit and an quality check operation to accepted the boosted amount. The ICC profile is updated accordingly.
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