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公开(公告)号：US4502054A
公开(公告)日：1985-02-26
申请号：US392664
申请日：1982-06-28
CPC分类号： B41J2/065
摘要： The device comprises a printing head (15) constituted by an insulating container (19) with a capillary nozzle (36). The electrically conductive ink is kept under circulation in the container via a feed tube (26, 23) and a return tube (27, 24) leading to a suction pump, in order to allow the formation of a convex meniscus at the exit aperture of the nozzle (36) and eliminate any vapor bubbles. A pulse generator creates a voltage of a predetermined value and duration between an electrode (37) external to the nozzle and an electrode (23) in contact with the ink, in order to create a state of excitation of the meniscus and partial vaporization of a layer of ink, such as to expel a plurality of ink particles. The head is mounted on a carriage movable transversely to the paper, which advances at each stroke reversal of the head.
摘要翻译： 该装置包括由具有毛细管喷嘴（36）的绝热容器（19）构成的打印头（15）。 导电油墨经由供给管（26,23）和通向抽吸泵的返回管（27,24）在容器中保持循环，以便允许在出口孔处形成凸起的弯液面 喷嘴（36）并消除任何蒸气泡。 脉冲发生器产生在喷嘴外部的电极（37）和与墨水接触的电极（23）之间的预定值和持续时间的电压，以便产生弯液面的激发状态和部分蒸发的状态 油墨层，例如排出多个油墨颗粒。 头部安装在横向于纸张移动的托架上，其在头部的每次行程反转时前进。
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2.发明授权High speed ink jet printer with improved electrical connection to the nozzles 失效高速喷墨打印机具有改进的与喷嘴的电连接
公开(公告)号：US4679059A
公开(公告)日：1987-07-07
申请号：US838167
申请日：1986-03-10
申请人： Giandomenico Dagna
发明人： Giandomenico Dagna
CPC分类号： B41J2/19
摘要： An ink jet printer is provided with an ink reservoir including a laminar substrate covered on the outer surface of a plurality of metal coatings forming individual electrodes associated with a plurality of nozzles. These latter are formed of holes passing through the substrate and the coatings. An additional metal coating is provided in the inner surface of the substrate and includes a portion to provide a common electrode and a plurality of portions connected with the coatings of the outer surface. The reservoir has a chamber for the evacuation of gases which form during the printing operation, the chamber having an associated Venturi pump acting as a vacuum source.The electrical energization circuit for the printer includes an adjustment member for effecting controlled variation in the energy of the pulses which cause the ejection of ink sprays through the printer nozzles.
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公开(公告)号：US4628334A
公开(公告)日：1986-12-09
申请号：US702061
申请日：1985-02-15
申请人： Giandomenico Dagna , Franco Morin
发明人： Giandomenico Dagna , Franco Morin
CPC分类号： B41J2/1752 , B41J2/17513
摘要： The head comprises at least one nozzle (38) associated with two electrodes and carried by a holder (14) into which an ink cartridge (50) can be fitted. The cartridge is filled with ink and sealed after it has been filled. The cartridge terminates at one end with a cylindrical portion (60) which is closed by a diaphragm which can be ruptured upon insertion in the head. The diaphragm is ruptured by a tube (66) which projects within the holder and which communicates with the printing nozzles (38). The cylindrical portion (60) of the cartridge is offset with respect to the longitudinal axis of the cartridge to ensure correct insertion thereof. At the other end the cartridge is closed by a cover (87) having an aperture which is disposed above the free level (PL) of the ink and which is initially closed by a second diaphragm. The second diaphragm is ruptured by a movable suction conduit (102) which is manually fitted to the cartridge to lock the latter in position and to permit a pump to exhaust the gases which are formed during the printing operation. The printing head may comprise a holder having a plurality of housings in side-by-side relationship for the insertion of corresponding cartridges containing inks of different colors.
摘要翻译： 头部包括与两个电极相关联的至少一个喷嘴（38），并由可安装墨盒（50）的保持器（14）承载。 墨盒充满墨水，并在填充后密封。 盒的一端终止于圆柱形部分（60），该圆柱形部分（60）由隔膜封闭，隔膜在插入头部时会破裂。 隔膜由在支架内突出并与打印喷嘴（38）连通的管（66）破裂。 盒的圆柱形部分（60）相对于盒的纵向轴线偏移以确保其正确插入。 在另一端，盒被具有孔的盖（87）封闭，盖（87）设置在墨水的自由水平（PL）上方，并且最初由第二隔膜封闭。 第二隔膜由可移动的吸入管道（102）破裂，该可移动的吸入管道（102）手动地装配到药筒以将其锁定在适当的位置并且允许泵排出在打印操作期间形成的气体。 打印头可以包括具有并排关系的多个壳体的保持器，用于插入包含不同颜色的油墨的相应墨盒。
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公开(公告)号：US4593296A
公开(公告)日：1986-06-03
申请号：US631950
申请日：1984-07-18
申请人： Giandomenico Dagna
发明人： Giandomenico Dagna
CPC分类号： B41J2/19
摘要： An ink jet printer has a chamber for the evacuation of gases which form during the printing operation, the chamber having an associated Venturi pump acting as a vacuum source.The electrical energization circuit for the printer includes an adjustment member for effecting controlled variation in the energy of the pulses which cause the ejection of ink sprays through the printer nozzles.
摘要翻译： 喷墨打印机具有用于排空在打印操作期间形成的气体的室，该室具有作为真空源的相关文丘里泵。 用于打印机的电通电电路包括调整部件，用于实现脉冲能量的受控变化，从而使喷墨通过打印机喷嘴喷射。
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公开(公告)号：US4485386A
公开(公告)日：1984-11-27
申请号：US397770
申请日：1982-07-13
摘要： The ink jet dot printer comprises a head mounted on a carriage movable along a platen supporting the paper and is formed by a plurality of tubes and piezoelectric transducer for ejecting the ink, which are supported by two parallel plates spaced from one another, between which a polymerizable resin is cast to form a single block. The tubes are aligned in a single row F--F' in a direction inclined with respect to the printing line, in such manner that the distance between the extreme tubes measured perpendicularly to the printing line is equal to the maximum height of the characters. On the outside of the front plate supporting the tubes there is fixed a thin plate bearing a row of nozzles, each of which is aligned with the corresponding ejector tube. The expulsion of the drops of ink is obtained by means of the compression exerted on the tubes by the piezoelectric transducers activated in parallel by electric pulses generated by an energizing circuit under the control of a driving logic circuit by means of which it is possible to vary the slope of the printed characters and obtain bidirectional printing at high speed.
摘要翻译： 喷墨点打印机包括安装在可支撑纸张的台板上移动的托架的头部，并且由用于喷射油墨的多个管和压电换能器形成，所述压力换能器由彼此间隔开的两个平行板支撑， 可聚合树脂被浇铸以形成单个块。 以相对于印刷线倾斜的方向将管排列成单列F-F'，使得垂直于印刷线测量的最终管之间的距离等于字符的最大高度。 在支撑管的前板的外侧，固定有一排带有一排喷嘴的薄板，每个喷嘴与相应的喷射管对准。 通过在驱动逻辑电路的控制下通过由激励电路产生的电脉冲并联激活的压电换能器来实现油墨滴的排出，这些压电换能器通过驱动逻辑电路的控制而施加在管上的压缩获得，借助于该驱动逻辑电路可以改变 打印字符的斜率，并获得高速双向打印。
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公开(公告)号：US4234871A
公开(公告)日：1980-11-18
申请号：US913217
申请日：1978-06-06
摘要： In a capacitive keyboard using a polarized dielectric commonly called an electret, the keys are organized according to a matrix by rows and columns, the signals generated on the column conductors being of opposite polarity with respect to those generated on the row conductors. The movable armatures of the variable capacitors of the keys also act as bridging elements to allow the crossing of the row and column conductors and as snap elements.
摘要翻译： 在使用通常称为驻极体的极化电介质的电容式键盘中，按照行和列的矩阵来组织键，在列导体上产生的信号相对于在行导体上产生的信号具有相反的极性。 键的可变电容器的可移动电枢还用作桥接元件，以允许行和列导体与卡扣元件交叉。
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