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    • 2. 发明授权
    • Dot matrix printing device
    • 点阵打印装置
    • US4238806A
    • 1980-12-09
    • US28657
    • 1979-04-10
    • Michele BovioPierangelo Berruti
    • Michele BovioPierangelo Berruti
    • B41J2/505G01D15/10B41J3/00
    • B41J2/505
    • A dot matrix printing device for electronic calculator comprising a plurality of electrically heatable dots of an insulating plate aligned therebetween and spaced according to a constant pitch to print the digits of the calculator amounts. A symbol dot is located adjacently to the terminal digit dot which prints the least significant digit of the amount, aligned with the other dots of the plurality. The symbol dot is spaced from the terminal digit dot by a distance greater than the constant pitch of the other dots and prints the explanatory symbols of the amounts leaving a blank between the digits and the symbols of the amounts.
    • 一种用于电子计算器的点阵打印装置,其包括在其间对准的绝缘板的多个电可加热点,并且根据恒定间距间隔开以打印计算器量的数字。 符号点位于与终端数字点相邻的位置,其打印数量的最低有效数字,与多个的其他点对准。 符号点与终端数字点间隔大于其他点的恒定间距,并打印数字和数字符号之间留下空白的量的说明符号。
    • 3. 发明授权
    • Serial printhead ink supply
    • 串行打印头墨水供应
    • US4630077A
    • 1986-12-16
    • US686484
    • 1984-12-26
    • Pierangelo BerrutiRoberto GuelfoAlessandro CrottiEnnio A. PozzoRoberto Realis Luc
    • Pierangelo BerrutiRoberto GuelfoAlessandro CrottiEnnio A. PozzoRoberto Realis Luc
    • B41J2/05B41J2/175G01D15/16
    • B41J2/1752B41J2/17506B41J2/17513
    • The head (12) comprises a closed container (14) carrying two electrodes (36, 62) and a nozzle (18) and mounted removably on a carriage (13).In order for the ink (16) always to be held at atmospheric pressure, the container (14) comprises an expansible space defined by a diaphragm (67) having a portion (74) aligned with an opening (73) in the container (14).The diaphragm (67) is of butyl rubber which can be pierced with a syringe to permit the container (14) to be refilled with ink (18).The container (14) is closed by an alumina plate (32) carrying the nozzle (18) and joined to a second plate (76) parallel thereto, and of a material which can be wetted by the ink (16). The second plate (76) constitutes a wall for resisting the pressure waves of an ink jet leaving the nozzle (18), and is immediately covered by the ink again.
    • 头部(12)包括承载两个电极(36,62)和喷嘴(18)的密封容器(14),并且可移除地安装在滑架(13)上。 为了使油墨(16)始终保持在大气压力下,容器(14)包括由具有与容器(14)中的开口(73)对准的部分(74)的隔膜(67)限定的可膨胀空间 )。 隔膜(67)是丁基橡胶,其可以用注射器刺穿以允许容器(14)用油墨(18)重新填充。 容器(14)由承载喷嘴(18)的氧化铝板(32)封闭并与平行于其的第二板(76)连接,并且可被油墨(16)润湿的材料。 第二板(76)构成用于抵抗离开喷嘴(18)的喷墨的压力波的壁,并且立即被油墨覆盖。
    • 7. 发明授权
    • Dot matrix printer
    • 点阵打印机
    • US4573814A
    • 1986-03-04
    • US668158
    • 1984-11-05
    • Pierangelo BerrutiGiancarlo Cella
    • Pierangelo BerrutiGiancarlo Cella
    • B41J19/84B41J25/00B41J19/92B41J19/80
    • B41J25/006B41J19/84
    • The dot printer, which is of small dimensions, is used with desk top computers or as a peripheral unit with small processors. The printer writes in the serial-parallel mode by means of a thermal head (26) on a paper tape (16) wound on a writing platen (10) which advances intermittently to effect line spacing. This advancing is effected by means of a pawl (56) on a beam (50) controlled by a face cam (46) and a radial cam (48) on a cam cylinder (44) driven by a motor (45). A third cam (42) reciprocates the head (26) and, at the reversals of the head, the face cam (46) allows a spring (45) to engage the pawl (56) with a toothed wheel (62) on the platen (10) and the radial cam (48) then moves the pawl to advance the platen. The head comprises a small plate (29) of insulating material with twenty point-like resistive writing elements, and is fixed to a support (24 ) which is moved parallel to the cylinder by means of the third (42). A printed circuit card (71) fixed to the structure of the printer carries concentric tracks which are traversed by a sliding contact mounted on the cam cylinder (44) to produce synchronizing signals for the printing pulses.
    • 尺寸小的点阵式打印机与桌面计算机或具有小型处理器的外围设备一起使用。 打印机通过卷绕在写入台板(10)上的纸带(16)上的热敏头(26)以串行 - 并行模式写入,间隔地前进以实现行间距。 这种推进通过在由电动机(45)驱动的凸轮缸(44)上由面凸轮(46)和径向凸轮(48)控制的梁(50)上的棘爪(56)来实现。 第三凸轮(42)使头部(26)往复运动,并且在头部的反向处,面凸轮(46)允许弹簧(45)将棘爪(56)与压板上的齿轮(62)接合 (10),然后径向凸轮(48)移动棘爪以使压板前进。 头部包括具有二十点状电阻书写元件的绝缘材料的小板(29),并且固定到通过第三(42)平行于圆柱体移动的支撑件(24)。 固定到打印机结构的印刷电路卡(71)承载同心轨道,该同心轨道由安装在凸轮缸(44)上的滑动接触件穿过,以产生打印脉冲的同步信号。