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    Method of adjusting density detecting device used for image forming apparatus
    41.
    发明公开
    Method of adjusting density detecting device used for image forming apparatus 失效
    调整用于图像形成设备的密度检测装置的方法

    公开(公告)号：EP0703508A3

    公开(公告)日：1997-05-02

    申请号：EP95114804.8

    申请日：1995-09-20

    申请人： MITA INDUSTRIAL CO. LTD.

    发明人： Katsuhara, Kenji, c/o Mita Industrial Co., Ltd.

    IPC分类号： G03G15/00

    CPC分类号： G03G15/5041 ,  G03G2215/00042

    摘要： A method and an apparatus for selecting an amount of light to be irradiated for fog detection onto a photoreceptor (10) from a density detecting device (23) out of amounts of light for low density or for high density. A real original (1) is illuminated by a predetermined amount of illuminating light, whereby a toner image corresponding to the real original (1) is formed on the photoreceptor (10). Light of an amount for low density is irradiated onto the toner image to acquire a first density data. In addition, a pseudo original (22a) is illuminated by the predetermined amount of illuminating light, whereby a toner image corresponding to the pseudo original (22a) is formed. Light of the amount for low density is irradiated onto the toner image to acquire a second density data. The difference between the first and the second density data is compared with a predetermined threshold value. If the difference is less than the threshold value, the amount of light for low density is selected for fog detection. If the difference is not less than the threshold value, the amount of light for high density is selected.

    摘要翻译： 一种用于从低密度或高密度的光量中选择用于从密度检测装置（23）向感光体（10）上的雾检测照射的光量的方法和设备。 通过预定量的照明光照射真实原稿（1），由此在感光体（10）上形成与真实原稿（1）相对应的调色剂图像。 将低密度量的光照射到调色剂图像上以获取第一密度数据。 另外，通过预定量的照明光照射伪原稿（22a），由此形成与伪原稿（22a）对应的调色剂图像。 将低密度量的光照射到调色剂图像上以获得第二密度数据。 将第一和第二密度数据之间的差异与预定阈值进行比较。 如果差值小于阈值，则选择低密度的光量用于雾检测。 如果差值不小于阈值，则选择高密度的光量。

    Cleaning unit
    45.
    发明公开
    Cleaning unit 失效
    清洁单元。

    公开(公告)号：EP0672970A3

    公开(公告)日：1997-03-12

    申请号：EP95103684.7

    申请日：1995-03-14

    申请人： MITA INDUSTRIAL CO. LTD.

    发明人： Morishita, Hiroki, c/o Mita Industrial Co., Ltd. ,  Taniguchi, Susumu, c/o Mita Industrial Co., Ltd. ,  Kotera, Shinichi, c/o Mita Industrial Co., Ltd.

    IPC分类号： G03G21/00 ,  G03G21/10

    CPC分类号： G03G21/10 ,  G03G21/007

    摘要： There is provided a cleaning unit for removing residual toner present on the periphery of a photoconductive drum (42) after toner image transfer, which includes: a main blade (105) for scraping the toner from the surface of the photoconductive drum (42); and a cleaning roller (107) disposed below the main blade (105) and abutting against the periphery of the photoconductive drum (42). The inner space of the cleaning housing (101) is divided into a cleaning chamber (103) and a toner storage (104) by a separator plate (102). A spacing (S) between the lower end (102a) of the separator plate (102) and the periphery of the cleaning roller (107) is adjusted to preferably 1mm to 2mm, more preferably 1.3mm to 1.5mm. By thus adjusting the spacing (S), the toner is compressed when passing through the spacing and, hence, the toner transportation pressure is increased.

    Image forming apparatus
    49.
    发明公开
    Image forming apparatus 失效
    成像设备

    公开(公告)号：EP0757300A2

    公开(公告)日：1997-02-05

    申请号：EP96305629.6

    申请日：1996-07-31

    申请人： MITA INDUSTRIAL CO. LTD.

    发明人： Yoshiuchi, Katsuhiro, c/o Mita Ind. Co., Ltd. ,  Kageyama, Hiroshi, c/o Mita Ind. Co., Ltd. ,  Nishi, Yoko, c/o Mita Ind. Co., Ltd.

    IPC分类号： G03G15/00

    CPC分类号： G03G15/652 ,  G03G15/6523 ,  G03G2215/00455 ,  G03G2215/00468

    摘要： An image forming apparatus capable of cutting a strip-shaped continuous sheet on which an image is formed to a desirable cutting length. A rolled-sheet (4) is conveyed by registration rollers (LL) and the like. The rolled-sheet (4) is further led to the vicinity of a photosensitive drum (20) through pre-transfer rollers (TL). The rolled-sheet (4) to which a toner image has been transferred is subjected to toner fixing processing by a fixing device (35). When the leading end of the rolled-sheet (4) reaches the pre-transfer rollers (TL), the rotational speed of a sheet feeding motor (PFM) is increased during predetermined time. Consequently, the sheet conveying speed on the upstream side of the pre-transfer rollers (TL) in a direction of sheet conveyance is increased, thereby forming slack in a sheet portion between the registration rollers (LL) and the pre-transfer rollers (TL). Consequently, tension exerted on a sheet portion between the fixing device (35) and the pre-transfer rollers (TL) does not affect the conveyance of the sheet by the registration rollers (LL). If operation timing of a cutting mechanism (80) is determined on the basis of the number of output pulses of a pulse output unit (PW) for detecting rotation of the sheet feeding motor (PFM), therefore, the rolled-sheet (4) can be reliably cut to a desirable length.

    摘要翻译： 一种图像形成设备，能够将其上形成有图像的条形连续片材切割成期望的切割长度。 卷筒纸（4）由定位辊（LL）等输送。 卷筒纸（4）通过预输送辊（TL）进一步被引导到感光鼓（20）的附近。 转印有调色剂图像的压延片（4）通过定影装置（35）进行调色剂定影处理。 当卷筒纸（4）的前端到达预输送辊（TL）时，在预定时间内增加送纸马达（PFM）的转速。 因此，在输送方向上的预输送辊（TL）的上游侧的片材输送速度增加，由此在对齐辊（LL）和预输送辊（TL）之间的片材部分中形成松弛 ）。 因此，施加在定影装置（35）和预输送辊（TL）之间的片材部分上的张力不会影响定位辊（LL）输送片材。 如果基于用于检测片材进给马达（PFM）的旋转的脉冲输出单元（PW）的输出脉冲的数量来确定切割机构（80）的操作时机，则卷状片材（4） 可以可靠地切割成所需的长度。

    Image forming apparatus
    50.
    发明公开
    Image forming apparatus 失效
    成像设备

    公开(公告)号：EP0757299A1

    公开(公告)日：1997-02-05

    申请号：EP96305628.8

    申请日：1996-07-31

    申请人： MITA INDUSTRIAL CO. LTD.

    发明人： Yoshiuchi, Katsuhiro, c/o Mita Ind. Co., Ltd. ,  Kageyama, Hiroshi, c/o Mita Ind. Co., Ltd. ,  Nishi, Yoko, c/o Mita Ind. Co., Ltd.

    IPC分类号： G03G15/00

    CPC分类号： G03G15/652 ,  B65H26/02 ,  B65H2301/41524 ,  B65H2511/51 ,  B65H2511/526 ,  B65H2513/40 ,  G03G15/6517 ,  G03G2215/00455 ,  G03G2215/00464 ,  B65H2220/01 ,  B65H2220/03 ,  B65H2220/11

    摘要： An image forming apparatus having a structure in which it is judged whether or not the trailing end of a continuous sheet is fixed to a feeding reel (51, 52, 53). The continuous sheet wound around the feeding reel (51, 52, 53) is pulled out, and is conveyed through a conveying path passing through an image forming section. When the continuous sheet is conveyed, the rotation or the stop of the feeding reel (51, 52, 53) is detected. When the stop of the rotation of the feeding reel (51, 52, 53) is detected while the continuous sheet is being conveyed, it is judged that the continuous sheet has been used up. The continuous sheet is further conveyed for a predetermined time period after the judgment. It is judged whether or not the trailing end of the continuous sheet is fixed to the feeding reel (51, 52, 53) depending on whether or not the continuous sheet exists in a predetermined position of the conveying path.

    摘要翻译： 一种图像形成装置，其具有判断连续片材的后端是否固定在供给卷轴（51,52,53）上的结构。 缠绕在供给卷轴（51,52,53）上的连续片被拉出，并通过穿过图像形成部的传送路径传送。 当传送连续片材时，检测供给卷轴（51,52,53）的旋转或停止。 当在连续片材传送过程中检测到供给卷轴（51,52,53）的旋转停止时，判断连续片材已经用完。 在判断之后，连续片材被进一步传送预定时间段。 根据连续片材是否存在于传送路径的预定位置来判断连续片材的尾端是否固定到供给卷轴（51,52,53）。