Sheet discharge device and image forming apparatus therewith

    公开(公告)号:US10647538B2

    公开(公告)日:2020-05-12

    申请号:US16160664

    申请日:2018-10-15

    Inventor: Satoshi Tsunemi

    Abstract: A sheet discharge device has a sheet discharge port, a conveying guide, discharge roller pairs, corrugation members, and first biasing members, and discharges sheets onto a discharge tray sequentially. The corrugation members are arranged between the discharge roller pairs to protrude beyond a nip portion in them and stiffens the sheet by pressing one side of the sheet. The first biasing members bias the corrugation members in the protruding direction. Each of the corrugation members has, in a region extending from the upstream side to a downstream-side end part of the discharge roller pairs in the sheet discharge direction and including the nip portion, a first pressing part making contact with one side of the sheet and, in a region further on the downstream side of the downstream-side end part of the discharge roller pairs, a second pressing part making contact with one side of the sheet.

    Inkjet recording apparatus
    2.
    发明授权
    Inkjet recording apparatus 有权
    喷墨记录装置

    公开(公告)号:US09511608B2

    公开(公告)日:2016-12-06

    申请号:US14965090

    申请日:2015-12-10

    CPC classification number: B41J29/17 B41J11/007 B41J11/0085

    Abstract: An inkjet recording apparatus includes a control section, a conveyance section, a recording head, a gap forming section, and a negative pressure applying section. The gap forming section is disposed upstream of the recording head in a conveyance direction of a recording medium to form a narrow gap with a conveying surface of the conveyance section. The negative pressure applying section applies negative pressure to the narrow gap. The control section adjusts a distance across the narrow gap in the direction perpendicular to the conveying surface to a first distance in image formation. Upon receiving an instruction to clean the gap forming section, the control section adjusts the distance across the narrow gap in a direction perpendicular to the conveying surface to a second distance that is greater than the first distance and causes the negative pressure applying section to start applying negative pressure to the narrow gap.

    Abstract translation: 喷墨记录装置包括控制部分,传送部分,记录头,间隙形成部分和负压施加部分。 间隙形成部分沿着记录介质的传送方向设置在记录头的上游,以与传送部分的输送表面形成窄间隙。 负压施加部对窄间隙施加负压。 控制部分在图像形成中将与输送表面垂直的方向上的窄间隙的距离调节到第一距离。 控制部接收到清理间隙形成部的指示时,将与输送面垂直的方向上的窄间隙的距离调整为比第一距离大的第二距离,使负压施加部开始施加 负压到窄间隙。

    Inkjet recording apparatus
    3.
    发明授权

    公开(公告)号:US09827792B2

    公开(公告)日:2017-11-28

    申请号:US15058404

    申请日:2016-03-02

    Abstract: An inkjet recording apparatus includes a sheet feed section, an image forming section, a partition unit, an air inflow portion, a first sheet conveyance section, a second sheet conveyance section, and an air sucking and discharging section. The partition unit partitions an interior of an apparatus casing into a first space in which the image forming section is disposed and a second space in which the sheet feed section, the first sheet conveyance section, and the second sheet conveyance section are disposed. Air outside the apparatus casing is taken into the first space through the air inflow portion. The second sheet conveyance section includes a conveyance guide disposed downstream of the image forming section in a conveyance direction of a recording sheet. The air sucking and discharging section sucks air around the conveyance guide and discharges the air into the second space or out of the apparatus casing.

    Inkjet recording apparatus
    5.
    发明授权

    公开(公告)号:US09694604B2

    公开(公告)日:2017-07-04

    申请号:US14994836

    申请日:2016-01-13

    CPC classification number: B41J11/007 B41J11/0085 B41J29/17

    Abstract: An inkjet recording apparatus includes a control section, a conveyance section, a recording head, a negative pressure applying section, a gap forming section, and a first voltage applying section. The conveyance section conveys a recording medium placed on a conveying surface. The negative pressure applying section applies negative pressure to holes in the conveying surface to suck the recording medium onto the conveying surface. The gap forming section forms a narrow gap, with the conveying surface, further upstream in a conveyance direction of the recording medium than the recording head. The gap forming section is composed of at least a part of a conductive portion. The first voltage applying section applies a voltage to the conductive portion. The control section controls the first voltage applying section to apply the voltage to the conductive portion while the inkjet recording apparatus performs a specific process.

    Inkjet recording apparatus
    7.
    发明授权
    Inkjet recording apparatus 有权
    喷墨记录装置

    公开(公告)号:US09505249B2

    公开(公告)日:2016-11-29

    申请号:US14994789

    申请日:2016-01-13

    CPC classification number: B41J29/17 B41J2/165 B41J11/0015 B41J11/007

    Abstract: An inkjet recording apparatus includes a recording head, a conveyance section, a first voltage applying section, and a second power supplying section. The recording head ejects ink onto a recording sheet. The conveyance section conveys the recording sheet to a position of image forming by the recording head. The first power supplying section applies a voltage to the recording sheet upstream of the recording head in a conveyance direction of the recording sheet. The second power supplying section includes a plate member located between the recording head and the first power supplying section and applies a voltage to the plate member that is of opposite polarity to the voltage applied by the first power supplying section.

    Abstract translation: 喷墨记录装置包括记录头,输送部,第一电压施加部和第二供电部。 记录头将油墨喷射到记录纸上。 输送部将记录纸传送到记录头的图像形成位置。 第一供电部在记录纸的输送方向上向记录头的上游施加电压。 第二供电部包括位于记录头与第一供电部之间的板状部件,并对与第一供电部施加的电压极性相反的板部件施加电压。

    Inkjet recording apparatus that conveys recording medium while applying negative pressure
    8.
    发明授权
    Inkjet recording apparatus that conveys recording medium while applying negative pressure 有权
    在施加负压的同时传送记录介质的喷墨记录装置

    公开(公告)号:US09427979B2

    公开(公告)日:2016-08-30

    申请号:US14956654

    申请日:2015-12-02

    CPC classification number: B41J11/0085 B41J2/2146

    Abstract: An inkjet recording apparatus includes a recording head, a conveyance section, and a negative pressure applying section. The recording head ejects ink onto a recording medium. The conveyance section conveys the recording medium placed on a conveying surface thereof to the recording head. The negative pressure applying section includes an airflow chamber and causes the recording medium to be sucked onto the conveying surface by negative pressure through holes in an upper wall of the airflow chamber and holes in the conveying surface. Negative pressure applied through first holes in a first region is greater than that applied through second holes in a second region. The first region is located upstream of a head facing region in a conveyance direction of the recording medium. The second region is located downstream of the first region in the conveyance direction of the recording medium and includes the head facing region.

    Abstract translation: 喷墨记录装置包括记录头,输送部和负压施加部。 记录头将油墨喷射到记录介质上。 输送部将放置在其输送面上的记录介质传送到记录头。 负压施加部分包括气流室,并且使记录介质通过气流室的上壁中的负压通孔和输送表面中的孔被吸入输送表面。 通过第一区域中的第一孔施加的负压大于在第二区域中通过第二孔施加的负压。 第一区域位于记录介质的传送方向上的头朝向区域的上游。 第二区域位于记录介质的传送方向上的第一区域的下游,并且包括面向头部的区域。

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