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    • 2. 发明授权
    • Image forming apparatus which detects waste toner accumulation before
photoconductor service life expiration
    • 图像形成装置,其在光电导体使用寿命期满之前检测废调色剂的累积
    • US5500716A
    • 1996-03-19
    • US400815
    • 1995-03-08
    • Hiroki MorishitaSusumu TaniguchiShinichi Kotera
    • Hiroki MorishitaSusumu TaniguchiShinichi Kotera
    • G03G21/00G03G15/00G03G21/10G03G21/12
    • G03G15/553G03G15/55G03G21/12G03G2221/1618G03G2221/1663
    • An image forming apparatus including a cleaning unit wherein a storage is defined in a cleaning housing to store therein toner to be discarded which is collected from the surface of a photoconductive drum after image transfer. The aforesaid storage has a capacity exceeding the maximum volume of toner to be used under normal conditions within the service life of the photoconductive drum. A cumulative number of produced copies is found from a signal from a paper discharge detecting sensor, so that with the number reaching a certain value, it is judged that the life of the photoconductive drum has expired. If a reed switch detects that the storage is full of waste toner before the expiry of the life of the photoconductive drum, it is judge to be abnormal, and a display unit is caused to indicate abnormality. Concurrent execution of the exchange of photoconductive drums and disposal of toner waste is assured, and if this is not accomplished, warning for trouble shooting is provided.
    • 一种图像形成装置,包括清洁单元,其中存储被限定在清洁壳体中,以便存储在图像转印之后从感光鼓的表面收集的待丢弃的调色剂。 上述存储器的容量超过在感光鼓的使用寿命内在正常条件下使用的最大调色剂体积。 根据来自排纸检测传感器的信号发现累积的副本数,使得在数量达到一定值的情况下,判断感光鼓的寿命已经过期。 如果在感光鼓使用寿命期满之前簧片开关检测到存放有废粉,则判断为异常,并且显示单元显示异常。 确保并行执行感光鼓的更换和废料的处理,如果没有完成,则提供故障排除警告。
    • 10. 发明授权
    • Image forming apparatus with clearance retaining portion
    • 具有间隙保持部分的图像形成装置
    • US08055170B2
    • 2011-11-08
    • US12033954
    • 2008-02-20
    • Susumu Taniguchi
    • Susumu Taniguchi
    • G03G15/16
    • G03G15/6558G03G15/1665G03G2215/00409G03G2215/00675
    • In an image forming apparatus, a pre-transfer guide (50) is provided immediately before a transfer nip portion formed by an intermediate transferring belt (12) and a transferring roller (18b). The pre-transfer guide (50) extends in a width direction of a sheet conveying path, and projections (50b) are formed on opposite end portions of the pre-transfer guide (50) on sides outer than an area on which a sheet is conveyed. The intermediate transferring belt (12) is driven in a state where a tension is applied to some extent, so that it may bow in a thickness direction on a running path. However, in an area immediately before the transfer nip portion, the projections (50b) retains a distance between the sheet and the intermediate transferring belt (12) to be greater than a predetermined distance.
    • 在图像形成装置中,在由中间转印带(12)和转印辊(18b)形成的转印夹持部之前提供预转印引导件(50)。 预转印引导件(50)在纸张传送路径的宽度方向上延伸,并且在预转印引导件(50)的相对端部上形成有突出部(50b)在与片材的区域之外的侧面 传达。 在一定程度上施加张力的状态下驱动中间转印带(12),使得其可以在行进路径上沿厚度方向弯曲。 然而,在转印夹持部之前的区域中,突起(50b)将片材和中间转印带(12)之间的距离保持为大于预定距离。