公开(公告)号：USD338450S

公开(公告)日：1993-08-17

申请号：US168743

申请日：1988-03-16

申请人： Ettore Sottsass

设计人： Ettore Sottsass

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。

公开(公告)号：US5169248A

公开(公告)日：1992-12-08

申请号：US606953

申请日：1990-10-31

申请人： Gillio Claudio ,  Bonmassari Gianpaolo

发明人： Gillio Claudio ,  Bonmassari Gianpaolo

IPC分类号： B41J19/30 ,  B41J29/38 ,  B41J33/18 ,  B41J35/22

CPC分类号： B41J35/22

摘要： A feed arrangement for a typing ribbon and/or a correction ribbon comprises a linear motor having a coil-carrying slide which is movable with an alternating rectilinear movement, a toothed wheel for the feed movement of the ribbon, and a connecting mechanism interposed between the coil-carrying slide and the wheel for converting the movement of the slide into a unidirectional rotary movement of the wheel for advancing the ribbon. The connecting mechanism comprises a first lever which is moved by the slide and two mutually independent ratchet assemblies and which are capable of alternately engaging with two diametrally oppositely disposed teeth on the toothed wheel. The ribbon is carried by a cassette and the wheel rotates a blade capable of engaging into a seat in a feed roller of the cassette.The linear motor is of the type comprising a permanent magnet of cylindrical shape, a ferromagnetic core which is coaxial with respect to the magnet and which surrounds the permanent magnet and defines a radial air gap with the permanent magnet, and a winding which is accommodated in the air gap and is supported by the coil-carrying slide. The slide is capable of bidirectional movement coaxially with respect to the permanent magnet in response to bidirectional excitation currents in the winding, coming from an actuation circuit which in turn is controlled by a central unit of the machine.

公开(公告)号：US5119115A

公开(公告)日：1992-06-02

申请号：US542908

申请日：1990-06-25

申请人： Mario Buat ,  Renato Conta ,  Adriano Fetta

发明人： Mario Buat ,  Renato Conta ,  Adriano Fetta

IPC分类号： B41J2/05 ,  B41J2/175

CPC分类号： B41J2/1752 ,  B41J2/17513

摘要： In a thermal ink jet print head the ink is expelled in the form of small drops through a plurality of nozzles communicating with corresponding expulsion chambers for expulsion of the ink through the effect of rapid heating of heater elements contained in the expulsion chambers. The nozzles, the expulsion chambers, the heater elements and the associated electrical conductors are constructed in a plurality of metal layers and insulating layers supported by a silicon plate. The plate is fixed to the structure of the head and is supplied with ink contained in a movable cartridge fitted to the structure of the head. The cartridge comprises a rigid reservoir containing a sponge saturated with ink which can be hydraulically connected to the head by means of a needle-type conduit mounted on the head and which perforates a rubber membrane of the cartridge. During the periods of storage and inactivity of the head, the cartridge is removed, permitting drying of the nozzles to avoid possible nozzle blockages and corrosion of the layers of the plate by the ink.

公开(公告)号：US5085531A

公开(公告)日：1992-02-04

申请号：US492807

申请日：1990-03-18

申请人： Claudio Gillio

发明人： Claudio Gillio

IPC分类号： B41J32/00 ,  B41J33/52 ,  B41J35/28

CPC分类号： B41J32/00 ,  B41J33/52

摘要： A cassette for a printing ribbon for typewriters comprises a casing accommodating a supply spool, a receiving spool and a brake and take up device which operates on a tube of the supply spool and on the ribbon which is unwound from the supply spool. The tube is rotatable on a sleeve projecting from the bottom of the casing. The brake and take up device comprises a shoe for applying a braking action to an internal surface of the tube. A wire spring has an intermediate portion which engages in a seat of coupling means of the shoe. In a first position the shoe is urged against the surface of the tube and brakes the supply spool. In a second position the shoe is spaced from the internal surface of the tube and the supply spool is free to rotate. The spring also performs the slack ribbon take-up function and for that purpose comprises an end having an L-shaped bent portion which in turn is engaged with the ribbon to regulate the tension and unwinding of the ribbon which is unwound from the supply spool.

摘要翻译： 用于打字机的打印带的盒子包括容纳供应卷轴的壳体，容纳卷轴以及在供应卷轴的管和从供应卷轴退绕的带上操作的制动器和卷取装置。 该管可以在从壳体的底部伸出的套筒上旋转。 制动器和卷取装置包括用于对管的内表面施加制动作用的鞋。 线弹簧具有接合在鞋的联接装置的座中的中间部分。 在第一位置，鞋被推靠在管的表面上并制动供应卷轴。 在第二位置，鞋与管的内表面间隔开，并且供应卷轴自由旋转。 该弹簧还执行松弛的卷带功能，为此目的包括具有L形弯曲部分的端部，该端部又与带状物接合，以调节从供应卷轴退绕的带状物的张力和展开。

公开(公告)号：US5034573A

公开(公告)日：1991-07-23

申请号：US535486

申请日：1990-06-11

申请人： Gianpaolo Bonmassari ,  Claudio Gillio

发明人： Gianpaolo Bonmassari ,  Claudio Gillio

IPC分类号： H01H13/52 ,  H01H13/70 ,  H01H13/705

CPC分类号： H01H13/705 ,  H01H2213/002 ,  H01H2215/004 ,  H01H2221/026 ,  H01H2233/018

摘要： The contact-type keyboard comprises a plurality of keys which are movable from a rest position to an operative position and which each have a sleeve capable of being accommodated in a tube provided on the upper part of a dome portion of elastomeric material. Each dome portion projects from a mat and, below the tube, comprises an internal circular ring provided with a movable conductive portion for short-circuiting a corresponding fixed conductor of a printed circuit which in turn is carried by a stop plate of insulating material. Each sleeve is of such a length as to pass internally by way of an upper opening through the dome portion, to engage a through hole in the plate to project downwardly beyond the plate and comprises a seat capable of accommodating a corresponding pin of a support frame structure so as to guide the respective key from the rest position to the operative position and vice-versa. The support frame structure is positioned below the stop plate at a predetermined spacing such that it does not interfere with the end of the sleeve when the respective key is in the operative position. The key is in turn restrained to the plate by means of a lateral appendix which is freely accommodated by a seat in the plate and provided with a hook portion which is retained by the plate.

公开(公告)号：US4995743A

公开(公告)日：1991-02-26

申请号：US289840

申请日：1988-12-27

申请人： Francesco Bernardis ,  Claudio Marangon ,  Rinaldo Ferrarotti

发明人： Francesco Bernardis ,  Claudio Marangon ,  Rinaldo Ferrarotti

IPC分类号： B41J2/28 ,  B41J2/235 ,  B41J2/275

CPC分类号： B41J2/275 ,  Y10T29/4902

摘要： Each needle of the printer has an associated electromagnet with a generally elongate movable armature having a first end and a second end which can selectively push the needle during printing as a result of a pivoting movement within a step formation facing the electromagnet. The step formation divides the armature into first and second portions facing the first and second ends respectively, and faces the respective electromagnet in such a position that the second portion of the armature at least partially faces the electromagnet.

公开(公告)号：USD313242S

公开(公告)日：1990-12-25

申请号：US221637

申请日：1988-07-20

申请人： Mario Bellini

设计人： Mario Bellini

公开(公告)号：US4900169A

公开(公告)日：1990-02-13

申请号：US208788

申请日：1988-06-17

申请人： Remo Falconieri ,  Ester G. Gianotti

发明人： Remo Falconieri ,  Ester G. Gianotti

IPC分类号： B41J9/42

CPC分类号： B41J9/42

摘要： The print apparatus comprises a character-carrying element of the `daisywheel` type with flexible spokes which can be selectively positioned in front of a platen roller, a print hammer for moving a selected character towards the platen roller, an actuating solenoid for the print hammer and a damping mechanism which acts on the hammer after the printing of each character. The hammer is directly connected to a movable armature of the solenoid and is returned by a return spring.During the return phase, the armature displaces, against a travel limiting stop, a counteracting weight which is urged towards an intermediate stop by the force of a counteracting spring. A first damping element is disposed between the movable armature and the counteracting weight and a second damping element is disposed between the weight and the travel limiting stop. The two damping elements, operating sequentially, minimize the time required for the hammer to settle down.

摘要翻译： 打印装置包括具有柔性轮辐的“菊花”型的字符传送元件，其可以选择性地定位在压纸辊的前面，用于将选定字符朝向压纸辊移动的打印锤，用于打印锤的致动螺线管 以及在每个字符的打印之后作用于锤子的阻尼机构。 锤子直接连接到螺线管的可移动衔铁，并由回位弹簧返回。 在返回阶段期间，电枢相对于行程限制止动件移动抵消力的反作用力，该抵抗重物被抵抗弹簧的力推向中间止挡件。 第一阻尼元件设置在可动电枢和反作用重物之间，第二阻尼元件设置在重物和行程限制止挡之间。 两个顺序运行的阻尼元件使锤子沉降所需的时间最小化。

公开(公告)号：US4875035A

公开(公告)日：1989-10-17

申请号：US162252

申请日：1988-02-29

申请人： Franco Furno ,  Luigi Biondi

发明人： Franco Furno ,  Luigi Biondi

IPC分类号： G09G1/00 ,  G09G1/04 ,  G09G1/16 ,  G09G5/02 ,  G09G5/04 ,  G09G5/18

CPC分类号： G09G1/167 ,  G09G1/04 ,  G09G1/16 ,  G09G5/028

摘要： The logic signals (S0, S1, S2, HL) which define the pixel are combined together with the synchronization signals (HS, VS) by a composer circuit (19) disposed in the display control, to form a single composite signal. The composer circuit (19) is connected by way of a single conductor (21) to a separator circuit (29) for separating the synchronizing signal, disposed in the VDU control circuit (20). The VDU control circuit comprises horizontal and vertical deflection circuits (27, 43 and 28, 44) for a CRT (24) and further comprises a format selector circuit (30) which is capable of sensing the duration of the vertical synchronizing pulse to control the frequency of the video signal vertical deflection circuit (28, 44).