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    • 2. 发明公开
    • DEVICE FOR PARALLEL JUSTIFICATION OF PRINT HEAD RELATIVE TO THE PLATEN
    • 用于平行印刷头相对于印版的装置
    • EP0857112A1
    • 1998-08-12
    • EP97927415.0
    • 1997-06-23
    • CASIO COMPUTER COMPANY LIMITED
    • IMAI, KazuhideOTA, ShinjiYOSHIDA, Hiroyuki
    • B41J11B41J25B41J29
    • B41J25/304B41J29/02
    • A print head (20) is placed upstanding on a chassis (25) through a protective member (26). A support shaft (28) to which a platen roller (21) is attached through a support member (27) is fixed at a lower end to a chassis (25). The support shaft (28) is fixed at an upper end to an upper attaching portion (25a) of the chassis (25). A space restricting member (31) is provided to the upper attaching portion (25a) so as to engage with an engaging lug (35) on the protective member (26) to restrict the upper ends of the print head (20) and the platen roller (21) at a predetermined space from each other. Thus, the upper ends of the print head (20) and the platen roller (21) are maintained at the predetermined space during printing to press the print head (20) and platen roller (21) against each other with a uniform pressure along their lengths. Thus, there is no difference in printing state between the upper and lower portions of the print head (20) and the platen roller (21) to achieve uniform printing and improve the print quality.
    • 打印头(20)通过保护构件(26)直立放置在底盘(25)上。 压辊(21)通过支撑构件(27)附接到其上的支撑轴(28)在下端固定到底座(25)。 支撑轴(28)的上端固定在底座(25)的上部安装部(25a)上。 一个空间限制件(31)设置在上连接部分(25a)上,以便与保护件(26)上的接合凸耳(35)啮合,以限制打印头(20)的上端和台板 辊(21)彼此隔开预定的间隔。 因此,在打印期间,打印头(20)和压纸辊(21)的上端保持在预定的空间,以沿着它们的均匀压力将打印头(20)和压纸辊(21) 长度。 因此,打印头(20)的上部和下部与压纸辊(21)之间的打印状态没有差异,从而实现均匀打印并提高打印质量。