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    • 1. 发明授权
    • Printing media feeding apparatus for printers
    • 用于打印机的打印介质进给装置
    • US5158381A
    • 1992-10-27
    • US740874
    • 1991-07-31
    • Mitsugu InomataHaruhisa InagakiFumio Nakao
    • Mitsugu InomataHaruhisa InagakiFumio Nakao
    • B41J11/48B41J13/10
    • B41J11/48B41J13/106
    • A printer includes a printing portion and means for defining a sheet path along which a printing media passes through the printing portion. The sheet path defining means includes a pair of first feed rollers arranged upstream of the printing portion with respect to a normal feed direction of the printing media with the first rollers being adapted to be driven in the normal or a reverse direction. The first rollers further are driven at a predetermined speed with a predetermined speed force at least in a normal direction. A pair of second feed rollers is arranged downstream of the printing portion which are driven only in the normal direction at a feed speed slightly higher than the predetermined feed speed with a feed force slightly smaller than the predetermined feed force. The second rollers further are freely rotatable in the reverse direction.
    • 打印机包括打印部分和用于限定打印介质穿过打印部分的纸张路径的装置。 片材路径限定装置包括一对第一进给辊,其相对于打印介质的正常进给方向布置在打印部分的上游,其中第一辊适于沿正向或反向驱动。 第一辊子进一步以至少沿正常方向以预定速度的速度以预定速度被驱动。 一对第二进料辊布置在印刷部分的下游,其仅在正常方向上以比预定进给速度略微高于进给速度的进给速度驱动,进给力略小于预定进给力。 第二辊子还可以沿相反方向自由旋转。
    • 2. 发明授权
    • Method and apparatus for adjusting the spacing between head and platen
in an impact printer or the like
    • 用于调节冲击打印机等中的头部和压板之间的间隔的方法和装置
    • US5156466A
    • 1992-10-20
    • US599176
    • 1990-10-17
    • Haruhisa InagakiMitsugu InomataFumio Nakao
    • Haruhisa InagakiMitsugu InomataFumio Nakao
    • B41J25/308
    • B41J25/3088
    • A printer of the kind having a printing head for printing on a sheet being held against a platen roll by a sheet presser, with both printing head and sheet presser mounted fast to a head carriage which is movable not only in a direction parallel to the axis of the platen roll but also in a direction normal thereto. For adjusting the spacing between the printing head and the platen roll to the thickness of the sheet to be printed upon, a drive motor is coupled to the head carriage via a yieldable clutch. The drive motor is energized first for driving the head carriage toward the platen roll to an extent equal to, or preferably somewhat exceeding, a predetermined stroke of head travel toward and away from the platen roll, in order to positively hold the sheet presser directly against the platen roll, then for driving the head carriage away from the platen roll over said predetermined stroke, then, after the sheet to be printed upon has been introduced between the platen roll and the sheet presser, for driving the head carriage toward the platen roll to an extent equal to or exceeding said predetermined stroke, in order to positively hold the sheet presser against the platen roll via the sheet, and then for driving the head carriage away from the platen roll a variable distance depending upon the thickness of the sheet, in order to provide a required spacing between the printing head and the platen roll.
    • 一种具有打印头的打印机,用于通过压纸机将纸张压印在压纸卷筒上,打印头和压纸机两者都快速安装在头托架上,头托架不仅可以沿平行于轴线的方向移动 并且也沿着与其正交的方向。 为了将打印头和压纸卷筒之间的间距调整到待印刷的片材的厚度,驱动电动机通过可屈服离合器联接到头部托架。 驱动马达首先通电,用于将头托架朝向压盘卷筒驱动,以等于或优选稍微超过头部朝向和远离压纸卷筒的行程的预定行程的程度,以便将片材压紧件直接抵靠 压板辊,然后用于将头托架从所述压纸卷筒上移动超过所述预定行程,然后在被打印的片材已经被引入压纸卷筒和压纸机之间,用于将打印头托架驱动到压纸辊 在等于或超过所述预定行程的程度上,以便经由片材将片材压紧机构积极地保持在压板辊上,然后根据纸张的厚度驱动头架从压纸辊离开可变距离, 以便在打印头和压纸辊之间提供所需的间隔。