Recording head and inkjet recording apparatus

    公开(公告)号:US11865840B2

    公开(公告)日:2024-01-09

    申请号:US17705103

    申请日:2022-03-25

    CPC classification number: B41J2/1433

    Abstract: A recording head includes an ink ejection portion and an ink holding portion. The ink holding portion includes a sheet portion and a holding portion. The sheet portion has an upper end side fixed to the ink ejection portion and a lower end side movable in a direction of coming closer to or separating away from a side surface of the ink ejection portion. The holding portion is located at a lower end portion of the sheet portion on the ink ejection portion side, is disposed to come into contact with or close to the side surface of the ink ejection portion, and is configured to hold an ink in an adjacent region with respect to the ink ejection portion.

    Cleaning device and image forming apparatus

    公开(公告)号:US11485160B2

    公开(公告)日:2022-11-01

    申请号:US16885195

    申请日:2020-05-27

    Abstract: A cleaning device includes a separation and contact mechanism that separates a web from a conveyance roller and brings the web into contact with the conveyance roller, and a controller. The controller includes a conveyed sheet number determination unit and a separation and contact control unit. The conveyed sheet number determination unit monitors a conveyed sheet number of both-surface image forming sheets where image forming processing is applied to both a first surface and a second surface with respect to the sheets conveyed by the conveyance roller, and determines whether or not a cumulative value of the conveyed sheet number has reached a predetermined threshold value. The separation and contact control unit controls the separation and contact mechanism so as to allow the web to be pressed to the conveyance roller by a pressing roller when the cumulative value of the conveyed sheet number has reached the threshold value.

    Curl straightening device and image forming apparatus having the same

    公开(公告)号:US10821745B2

    公开(公告)日:2020-11-03

    申请号:US16377304

    申请日:2019-04-08

    Inventor: Naoto Miyakoshi

    Abstract: A curl straightening device includes an endless belt, a curl straightening roller, a nip width adjusting mechanism, and a guide member. The curl straightening roller makes pressure contact with an outer peripheral surface of the endless belt, forming a nip portion, and straightens curl of the sheet which passes through the nip portion. The nip width adjusting mechanism moves the curl straightening roller in a direction away from or close to the endless belt so as to change a nip width. The mechanism includes a supporting holder of the curl straightening roller, and a rotationally moving portion that rotationally moves the roller supporting holder for moving the curl straightening roller. The guide member includes a pair of hanging members that are hung from both ends of the curl straightening roller so as to keep the guide member in constant position and posture relative to the curl straightening roller.

    Sensor mounting structure, fixing device, and image forming apparatus therewith

    公开(公告)号:US10389898B2

    公开(公告)日:2019-08-20

    申请号:US15865696

    申请日:2018-01-09

    Inventor: Naoto Miyakoshi

    Abstract: A sensor mounting structure includes a positioning member, a holding member, and a biasing member. The positioning member is a mounting reference of a sensor. The holding member is attachable to and detachable from the positioning member so as to form a space in which the sensor is disposed with respect to the positioning member. The biasing member includes an arched part which is overhung between a pair of engaging parts engaging with the holding member. The biasing member, while the holding member is attached to the positioning member, elastically deforms the arched part that is sandwiched between the holding member and the sensor that is disposed in the space so as to bias the sensor to the positioning member.

    Retaining structure for information recording device and image forming apparatus including retaining structure
    28.
    发明授权
    Retaining structure for information recording device and image forming apparatus including retaining structure 有权
    信息记录装置的保持结构和包括保持结构的图像形成装置

    公开(公告)号:US09103399B2

    公开(公告)日:2015-08-11

    申请号:US14185643

    申请日:2014-02-20

    Inventor: Naoto Miyakoshi

    CPC classification number: F16F1/3732 G03G21/1619

    Abstract: A HDD retaining mechanism includes a frame and a vibration isolator. The frame includes a through hole in a prescribed position. The vibration isolator includes a smaller cylindrical portion formed so as to be fitted in the through hole. The smaller cylindrical portion includes projecting portions formed by splitting one end portion of the smaller cylindrical portion into a plurality of portions in a circumferential direction. The projecting portions project into the accommodation space and abut against a HDD when the smaller cylindrical portion is fitted in the through hole. Each of the projecting portions includes a notch part recessed toward a center position of the smaller cylindrical portion from an outer circumferential surface of the cylindrical portion and extending across each of the projecting portions in the smaller circumferential direction of the cylindrical portion.

    Abstract translation: HDD保持机构包括框架和隔振器。 框架包括在规定位置的通孔。 隔振器包括形成为安装在通孔中的较小的圆柱形部分。 较小的圆柱部分包括通过将较小圆柱部分的一个端部沿圆周方向分成多个部分而形成的突出部分。 当较小的圆筒部分嵌入到通孔中时,突出部分突出到容纳空间中并与HDD抵接。 每个突出部分包括从圆柱形部分的外圆周表面朝向较小圆柱形部分的中心位置凹陷并且在圆柱形部分的较小圆周方向上延伸穿过每个突出部分的凹口部分。

    RETAINING STRUCTURE FOR INFORMATION RECORDING DEVICE AND IMAGE FORMING APPARATUS INCLUDING RETAINING STRUCTURE
    29.
    发明申请
    RETAINING STRUCTURE FOR INFORMATION RECORDING DEVICE AND IMAGE FORMING APPARATUS INCLUDING RETAINING STRUCTURE 有权
    信息记录装置的保留结构和图像形成装置,包括保留结构

    公开(公告)号:US20140239145A1

    公开(公告)日:2014-08-28

    申请号:US14185643

    申请日:2014-02-20

    Inventor: Naoto Miyakoshi

    CPC classification number: F16F1/3732 G03G21/1619

    Abstract: A HDD retaining mechanism includes a frame and a vibration isolator. The frame includes a through hole in a prescribed position. The vibration isolator includes a smaller cylindrical portion formed so as to be fitted in the through hole. The smaller cylindrical portion includes projecting portions formed by splitting one end portion of the smaller cylindrical portion into a plurality of portions in a circumferential direction. The projecting portions project into the accommodation space and abut against a HDD when the smaller cylindrical portion is fitted in the through hole. Each of the projecting portions includes a notch part recessed toward a center position of the smaller cylindrical portion from an outer circumferential surface of the cylindrical portion and extending across each of the projecting portions in the smaller circumferential direction of the cylindrical portion.

    Abstract translation: HDD保持机构包括框架和隔振器。 框架包括在规定位置的通孔。 隔振器包括形成为安装在通孔中的较小的圆柱形部分。 较小的圆柱部分包括通过将较小圆柱部分的一个端部沿圆周方向分成多个部分而形成的突出部分。 当较小的圆筒部分嵌入到通孔中时,突出部分突出到容纳空间中并与HDD抵接。 每个突出部分包括从圆柱形部分的外圆周表面朝向较小圆柱形部分的中心位置凹陷并且在圆柱形部分的较小圆周方向上延伸穿过每个突出部分的凹口部分。

    Inkjet recording apparatus
    30.
    发明授权

    公开(公告)号:US12097708B2

    公开(公告)日:2024-09-24

    申请号:US17937321

    申请日:2022-09-30

    CPC classification number: B41J2/16538 B41J2/16544 B41J2002/1655

    Abstract: An image forming apparatus includes a recording head and a wiper. The recording head is provided with a nozzle region where a plurality of ink ejection ports are opened downward. The wiper comes into contact with the nozzle region and moves in a predetermined direction to wipe the ink ejection ports. A head mounting part protruding outward is provided along the wiping direction on a side surface of the recording head at a position higher than the nozzle region. The head mounting part has: an outside portion having a water repellency higher than that of the side surface; and an inside portion provided inside the outside portion and having a water repellency smaller than that of the outside portion.

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