公开(公告)号：US4703332A

公开(公告)日：1987-10-27

申请号：US927227

申请日：1986-11-05

申请人： Alessandro Crotti ,  Roberto R. Luc

发明人： Alessandro Crotti ,  Roberto R. Luc

IPC分类号： B41J2/01 ,  B41J2/05 ,  B41J2/175 ,  B41J25/34 ,  G01D15/16

CPC分类号： B41J2/1752 ,  B41J2/17513 ,  B41J25/34

摘要： The head is formed by a container (2) comprising a rigid frame (14, 16) of tapered shape, bearing the nozzle (4) at one end thereof. Fitted into the frame is a tubular membrane (47) for containing the ink, which is sealed at the other end of the frame by a metal plate (51) connected to an electrode (6) in contact with the ink. The frame is provided with openings (58) to permit the membrane to keep the ink at atmospheric pressure. The electrode (6) is formed by a blade spring in contact with the metal plate (51) and is provided with a projection (42) disposed in a chamber (30) in the vicinity of the nozzle to maintain contact with the ink right up to exhaustion of the cartridge. The head is removably fixed in a seat on a carriage by means of lever which urges the head into its seat and also serves as electrical contact with the metal plate. A second contact is made to an electrode on the front of an alumina plate (3 ) in which the nozzle (4) is formed.

摘要翻译： 头部由容器（2）形成，容器（2）包括锥形形状的刚性框架（14,16），在其一端支承喷嘴（4）。 装在框架中的是用于容纳油墨的管状膜（47），其通过连接到与油墨接触的电极（6）的金属板（51）而密封在框架的另一端。 框架设置有开口（58），以允许膜将油墨保持在大气压力。 电极（6）由与金属板（51）接触的叶片弹簧形成，并且设置有设置在喷嘴附近的室（30）中的突起（42），以保持与油墨的接触。 使墨盒耗尽 头部通过杠杆可移动地固定在托架上的座上，该杠杆将头部推入其座中并且还用作与金属板的电接触。 对形成有喷嘴（4）的氧化铝板（3）的前面的电极进行第二次接触。

公开(公告)号：US4746937A

公开(公告)日：1988-05-24

申请号：US866246

申请日：1986-05-23

申请人： Roberto Realis Luc ,  Alessandro Crotti

发明人： Roberto Realis Luc ,  Alessandro Crotti

IPC分类号： B41J2/015 ,  B41J2/045 ,  B41J2/05 ,  B41J2/055 ,  G01D15/16

CPC分类号： B41J2/04541 ,  B41J2/04563 ,  B41J2/0458

摘要： In an ink jet printing element in which the drop is expelled by generating a current pulse through the ink in the nozzle, in order to reduce the control voltage, a first pulse (Tr) for heating the ink is generated, followed by a vaporization pulse (Tv) with a delay such as to make the printing position independent of the direction of movement of the element with respect to the paper. The heating pulse (Tr) is generated by a circuit (31) controlled by a temperature sensor (34) so that the duration of the heating pulse has a negative temperature coefficient. The vaporization pulse (Tv) is generated by a circuit (32) manually controlled (potentiometer 39) to determine the pulse duration on the basis of the desired strength of the printing. The delay between the two pulses is controlled by a delay circuit (38), e.g. a monostable circuit. The two pulses are applied to a transformer (35) which generates the voltage between the electrodes. The two circuits (31, 32) may be constituted by one monostable circuit with separate RC networks sequentially enabled for determining the durations of the heating and vaporization pulses.

摘要翻译： 在喷墨打印元件中，通过在喷嘴中产生一个电流脉冲来排出液滴，为了降低控制电压，产生用于加热油墨的第一脉冲（Tr），然后产生蒸发脉冲 （Tv），其延迟使得打印位置与元件相对于纸张的移动方向无关。 加热脉冲（Tr）由温度传感器（34）控制的电路（31）产生，使得加热脉冲的持续时间具有负的温度系数。 蒸发脉冲（Tv）由手动控制的电路（32）产生，电位计39根据期望的印刷强度确定脉冲持续时间。 两个脉冲之间的延迟由延迟电路（38）控制，例如， 单稳态电路。 两个脉冲施加到在电极之间产生电压的变压器（35）。 两个电路（31,32）可以由具有分开的RC网络的一个单稳态电路构成，该RC网络依次启用以确定加热和蒸发脉冲的持续时间。

公开(公告)号：US4630077A

公开(公告)日：1986-12-16

申请号：US686484

申请日：1984-12-26

申请人： Pierangelo Berruti ,  Roberto Guelfo ,  Alessandro Crotti ,  Ennio A. Pozzo ,  Roberto Realis Luc

发明人： Pierangelo Berruti ,  Roberto Guelfo ,  Alessandro Crotti ,  Ennio A. Pozzo ,  Roberto Realis Luc

IPC分类号： B41J2/05 ,  B41J2/175 ,  G01D15/16

CPC分类号： B41J2/1752 ,  B41J2/17506 ,  B41J2/17513

摘要： 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.

摘要翻译： 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。

公开(公告)号：US5207796A

公开(公告)日：1993-05-04

申请号：US841327

申请日：1992-02-25

申请人： Alessandro Crotti ,  Daniele Mazzini

发明人： Alessandro Crotti ,  Daniele Mazzini

IPC分类号： B41J23/02

CPC分类号： B41J23/025

摘要： An electronic typewriter (11) has a line spacing device (29) for rotating a platen roller (16) and a transport device (28) for moving a printing carriage (19) in both directions. The line spacing and transport devices are driven from a single motor (32) via an intermediate gear (40) mounted on a shift member (35). The shift member (35) is displaceable between two operative positions for connecting a driveshaft (33) to the transport device (28) or to the line spacing device (29). A servomechanism (36) which is motorized by the shaft (33) displaces the shift member (35) between the two positions by means of a shift electromagnet (81) which actuates a lever (79) to lock the gear (40) by means of teeth (88) on a slide member (43). Positioning means (44) hold the shift member (35) in each of the two operative positions, and an electronic control means (22) controls the motor (32 ) and the electromagnet (81). The system is of low cost, and is simple, functional and reliable.

摘要翻译： 电子打字机（11）具有用于使压印辊（16）旋转的行间隔装置（29）和用于在两个方向上移动打印托架（19）的传送装置（28）。 线间距和运输装置经由安装在换档构件（35）上的中间齿轮（40）从单个马达（32）驱动。 换档构件（35）可在两个操作位置之间移动，用于将驱动轴（33）连接到运送装置（28）或连接到行间隔装置（29）。 由轴（33）驱动的伺服机构（36）通过换档电磁体（81）使两个位置之间的换档构件（35）移动，该换档电磁体（81）致动杠杆（79），以通过装置 的齿（88）在滑动构件（43）上。 定位装置（44）将移动构件（35）保持在两个操作位置中的每一个中，并且电子控制装置（22）控制电动机（32）和电磁体（81）。 该系统成本低，功能简单，可靠。