EP0012860B1 - Dispositif de suspension pour un corps vibrant à la fréquence de résonance - Google Patents

Dispositif de suspension pour un corps vibrant à la fréquence de résonance Download PDF

Info

Publication number
EP0012860B1
EP0012860B1 EP79104720A EP79104720A EP0012860B1 EP 0012860 B1 EP0012860 B1 EP 0012860B1 EP 79104720 A EP79104720 A EP 79104720A EP 79104720 A EP79104720 A EP 79104720A EP 0012860 B1 EP0012860 B1 EP 0012860B1
Authority
EP
European Patent Office
Prior art keywords
carrier
axis
motion
springs
along
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP79104720A
Other languages
German (de)
English (en)
Other versions
EP0012860A1 (fr
Inventor
William Boone Pennebaker
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0012860A1 publication Critical patent/EP0012860A1/fr
Application granted granted Critical
Publication of EP0012860B1 publication Critical patent/EP0012860B1/fr
Expired legal-status Critical Current

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J25/00—Actions or mechanisms not otherwise provided for
    • B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
    • B41J25/006—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for oscillating, e.g. page-width print heads provided with counter-balancing means or shock absorbers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/385—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material
    • B41J2/425—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective supply of electric current or selective application of magnetism to a printing or impression-transfer material for removing surface layer selectively from electro-sensitive material, e.g. metal coated paper

Definitions

  • the invention relates to a suspension device for a body vibrating at a resonance frequency for use in moving one or more printing elements in a printer.
  • a suspension device for a body vibrating at a resonance frequency for use in moving one or more printing elements in a printer.
  • Such a device can also be used for mounting an optical scanner which interacts with a mirror in a laser-operated liquid crystal display device.
  • the printing elements In the case of non-impact printers, with which non-coded information is printed, as is the case, for example, with a facsimile system, the printing elements must be able to perform a spatially linear movement.
  • the pressure elements were mounted on a slide-like body which was mounted in ball bearings and was moved back and forth over relatively short distances.
  • the suspension device of the present invention avoids the use of ball bearings. Due to the relatively closely adjacent arrangement of the printing elements on the body, hereinafter referred to as the carrier, it is sufficient if the carrier is moved over a very short distance, for example a few centimeters, in order to cover the entire width of the recording medium with the printing elements.
  • the suspension device of the present invention uses, for the spatial linear movement of the carrier, leaf springs which extend between the carrier divided into several parts and an equal number of intermediate frames.
  • Each of the intermediate frames is connected by additional springs to a main frame, the mass of which is relatively large compared to the mass of the intermediate frame, the carrier and the springs.
  • the main frame is clamped between normally stationary supports by means of additional springs.
  • Such a suspension device for a body vibrating at a resonant frequency is known in principle from US-A-2,753,176, consisting of at least one intermediate frame which is spaced from the body in the direction perpendicular to its axis of vibration, a main frame, the mass of which is greater is as the mass of the body, a first spring arrangement connecting the body to the intermediate frame and a second spring arrangement connecting the intermediate frame to the main frame, which spring arrangements are arranged essentially perpendicular to the axis of the vibration of the body and are driven in phase with the same deflection, so that the body therefore carries out a spatially linear vibration along its axis of vibration.
  • a similar suspension device is previously known from FR-A-2 368 361.
  • an intermediate frame which is arranged at a distance from the vibrating body in the direction perpendicular to its axis of vibration, as well as a main frame, a first spring arrangement connecting the body to the intermediate frame and a second spring connecting the intermediate frame to the main frame Spring arrangement, which spring arrangements are arranged substantially perpendicular to the axis of the vibrations of the body, the first and second spring arrangements likewise undergoing the same deflection in phase correspondence and the body therefore executing a spatially linear vibration along its vibration axis.
  • US Pat. No. 3,742,846 addresses the problem of guiding the printing unit with respect to the recording medium, which is known in printers with "flying" printing on a continuously transported recording medium.
  • the movement of the print head is controlled in such a way that to linearize the printed raster lines when the print line is swept back and forth, it travels along a lying curve similar to a lying "8", its speed on the vertical part of the curve equaling the feed of the record carrier, while its speed on the horizontal part of the trajectory is nine times as high.
  • the invention has for its object to implement this known linearization principle for the raster lines to be printed also in the suspension device according to the preamble of claim 1, namely with a simpler measure compared to US-A-3 742 846.
  • This linearization or compensation which results in straight raster lines even though the record carrier is transported continuously, is achieved according to the invention by introducing a phase shift between the vibrations of the carrier consisting of several parts and the intermediate frame.
  • This phase shift is generated without influencing the forces driving the carrier, so that the amplitude of the movement of the carrier is not changed.
  • One of the intermediate frames can be driven in phase with the carrier, while the other is driven with a phase shift of 180 °.
  • the driving forces which cause the opposite-phase movement in the intermediate frame have no influence on the amplitude of the movement of the body along its axis of movement, since the driving forces cancel each other out along this axis.
  • the part 11 of the carrier 10 has a pair of leaf springs 15 and 16 (FIG. 1) which are substantially parallel to one another when the carrier 10 is at rest and which are arranged perpendicular to the direction of movement of the carrier 10.
  • Each of the leaf springs 15 and 16 is clamped at one end to a first intermediate frame 17.
  • the second part 12 of the carrier 10 has a pair of leaf springs 19 and 20 which are parallel to one another in the rest position of the carrier 10 and which extend perpendicularly with respect to the direction of movement of the carrier 10.
  • One end of each of these springs 19 and 20 is clamped to a second intermediate frame 21 which is arranged with respect to the first intermediate frame 17 on the opposite side of the axis of movement of the carrier 10.
  • the second part 12 of the carrier 10 comprises a plate 22, at the ends of which the leaf springs 19 and 20 are fastened by means of bolts 23, which bolts 23 extend through the plate 22 and the end pieces 24 and 25 at opposite ends extend the plate 22.
  • nuts 26 which are screwed onto the bolts 23, the plate 22, the springs 19 and 20 and the end pieces 24 and 25 are joined to form a unitary whole.
  • the second intermediate frame 21 has a central plate 28 and end plates 29 and 30, spacers 31 and 32 (FIG. 1) and end pieces 33 (FIG. 2) and 34 (FIG. 1).
  • One end of the leaf spring 19 is arranged between the central plate 28 and the end plate 29, one end of the leaf spring 20 is arranged between the central plate 28 and the end plate 30.
  • the central plate 28, the end plates 29 and 30, the spacers 31 and 32 and the end pieces 33 and 34 are held together by means of bolts 35 and nuts in the same way as the second part 12 of the carrier 10 with the other ends of the springs 19 and 20 and the end pieces 24 and 25.
  • the second intermediate frame 21 is connected to a main frame 40 by means of a pair of leaf springs 37 and 38 which are substantially parallel when the carrier 10 is at rest.
  • One end of the leaf spring 38 is held between the end plate 29 and the spacer 31, while the leaf spring 37 is clamped at one end between the spacer 31 and the end piece 33.
  • the leaf springs 37 and 38 extend substantially parallel to the leaf springs 19 and 20 as long as the carrier 10 is in the rest position, and they are attached to the main frame 40 with their other ends.
  • This has an extension 41, a spacer 42 and an end piece 43, one end of the leaf spring 37 being clamped between the end of the extension 41 and the spacer 42, while one end of the leaf spring 38 being clamped between the spacer 42 and the end piece 43 .
  • the leaf springs 37 and 38 are held together by means of screws 44 and nuts 45 with the spacer 42 and the end piece 43.
  • the other end of the second intermediate frame 21 is similarly swingably supported on the frame 40 by means of a pair of leaf springs 47 (FIG. 1) and 48 which are aligned parallel to each other and to the leaf springs 37 and 38 when the carrier 10 is at rest is.
  • the leaf springs 47 and 48 are attached to the main frame 40 in a manner similar to that described for the springs 37 and 38 above.
  • the first intermediate frame 17 has a pair of leaf springs 49 and 50 which extend parallel to one another and to the leaf springs 15 and 16 when the carrier 10 is at rest and which connect the first intermediate frame 17 to the main frame 40.
  • the leaf springs 49 and 50 are arranged on the main frame 40 in the same way as has already been described for the springs 37 and 38.
  • the first intermediate frame 17 is connected to the main frame 40 by a second pair of leaf springs 51 and 52, which in turn are aligned parallel to one another and parallel to the springs 15 and 16.
  • the springs 51 and 52 are attached in the same way as the springs 37 and 38.
  • the main frame 40 is suspended in a swinging manner by means of leaf springs 56 and 57 from normally stationary supports 54 and 55.
  • the fastening of the leaf springs 56 and 57 to the main frame 40 and to the supports 54 and 55 corresponds to the fastening of the springs 19 and 20 or 37 and 38.
  • the leaf spring 56 is fastened to the main frame 40 by means of the bolts 44 (FIG. 2) which are also the leaf springs 37 and 38 on the main frame 40 are attached.
  • the normally stationary supports 54 (FIG. 1) and 55 have stops 58 and 59 which serve to limit the movement of the main frame 40 in the springs 56 and 57 in the event that the normally stationary supports 54 and 55 are suddenly disturbed.
  • Each of the stops 58 and 59 preferably has suitable mechanical damping means which dampen any excessive movement of the main frame 40 when the normally stationary supports 54 and 55 suddenly start to move. A slight vibration of the main frame 40 with respect to the supports 54 and 55 is too small to cause a significant non-linearity in the movement of the carrier 10 and the intermediate frames 17 and 21 with respect to the main frame 40.
  • the resonance frequency of the vibration of the carrier 10 is chosen so that the carrier 10 and the intermediate frames 17 and 21 vibrate in phase with each other but out of phase with the main frame 40. Neglecting the masses of the leaf springs 15, 16, 19 and 20, the resonance frequency f of the carrier 10 defined by where k is the spring constant of the leaf springs 15, 16, 19 and 20 and m is the mass of the carrier 10.
  • the leaf springs 15 and 16 bend and cause the intermediate frame 17 to also move to the right. Accordingly, the springs 19 and 20 bend so that the second intermediate frame 21 can also move to the right.
  • the force resulting from the vibration of the carrier 10 is transmitted via the springs 15 and 16 to the first intermediate frame 17, whereby the springs 49 and 50 and the springs 50 and 51 are also bent.
  • the springs 19 and 20 transmit the force to the second intermediate frame 21, as a result of which the springs 37 and 38 as well as 47 and 48 are bent.
  • the bend of the springs 49 and 50 and the springs 51 and 52 must be the same as the bend 15 and 16, and the bend of the springs 37 and 38 as well as 47 and 48 must be the same as the bend of the springs 19 and 20. This can be achieved by corresponding selection of the stiffness of the springs 49 and 50 or 51 and 52 and the mass of the first intermediate frame 17, and the stiffness of the springs 37 and 38 or 47 and 48 and the mass of the second intermediate frame 21 with respect to the stiffness of the springs 15, 16 , 19 and 20 and the mass of the carrier 10.
  • the carrier 10 has a permanent magnet 60 which is fastened in a bracket 61 to the first part 11 of the carrier 10.
  • an electromagnetic coil 62 is arranged opposite the south pole of the magnet 60 and a coil 63 opposite the north pole of the magnet 60.
  • the second part 12 of the carrier 10 carries a permanent magnet 64 on one (65) which is attached to the plate 22 (Fig. 2) by suitable means, such as welding.
  • a coil 66 (FIG. 1) is arranged on the main frame 40 opposite the south pole of the magnet 64, while a coil 67 is arranged on the main frame 40 opposite the north pole of the magnet 64.
  • the south pole of the magnet 64 approaches the coil 66 and the north pole of the magnet 64 moves away from the coil 67, making fields in the coils more equal Direction are generated d. that is, the coils 66 and 67 sense the movement of the carrier 10 to the right. Similarly, the movement of the carrier 10 to the left is sensed when the north pole of the magnet 64 approaches the coil 67 while the south pole moves away from the coil 66.
  • the input signal of the operational amplifier 68 is primarily determined by the speed of the carrier 10.
  • speed of the carrier 10 When the carrier 10 has started to move from left to right in Fig. 1, its speed increases until it reaches the center of its displacement and then decreases. This change in speed produces an essentially sinusoidal output signal from the operational amplifier 68 (FIG. 4).
  • the output signal of the operational amplifier 68 is transmitted via a resistor 69 to the sum input of an operational amplifier 70, which can also be part of the integrated circuit to which the operational amplifier 68 belongs.
  • a DC component that may be present in the output signal of the operational amplifier 68 is eliminated by means of an equalization circuit 70 '.
  • the output signal of the operational amplifier 68 is also fed via a capacitor 71 to a diode 72, the anode of which is connected to the negative input terminal of the operational amplifier 73.
  • the positive input terminal of the operational amplifier 73 is connected to a potentiometer 74, from which a negative voltage can be tapped, by means of which the amplitude can be set.
  • the amplitude is chosen so that the operational amplifier 73 adjusts the amount of energy supplied to the coils 62 and 63 so that the amplitude of the carrier 10 is controlled so that it carries out approximately the same spatially linear movement in each direction.
  • the negative input terminal of the operational amplifier 73 and its output are bridged by an integrating capacitor 75 and a resistor 76 connected in parallel thereto.
  • the capacitor 75 integrates the signals arriving from the output of the operational amplifier 68 after they have been rectified by the diode 72.
  • Resistor 76 determines the DC gain of operational amplifier 73.
  • the operational amplifier 73 delivers a positive output signal if the rectified output signal from the operational amplifier 68 is on average more negative than the voltage tapped at the potentiometer 74.
  • the positive output voltage from operational amplifier 73 is added to the sinusoidal voltage from operational amplifier 68 to shift the zero crossing so that the positive portion of the total signal is present at the input of operational amplifier 70 earlier than the sinusoidal output signal from operational amplifier 68 becomes positive and also remains positive after the sinusoidal signal has become negative again. In this way, a positive signal is supplied to the operational amplifier 70 longer than a negative signal during each cycle of the carrier 10.
  • the output signal of the operational amplifier 70 is fed to the negative input of an operational amplifier 78, which amplifies it until saturation, so that its output signal is a square wave. If the input signal of the operational amplifier 70 has a 'DC component from the operational amplifier 73, the positive half-wave stretched by operational amplifier 78 while shortening the negative half wave.
  • the operational amplifier 78 supplies its output signal to a power amplifier 79, which amplifies the square wave for feeding the coils 62 and 63.
  • a commercially available bipolar operational amplifier, for example, is suitable as the power amplifier 79.
  • the coils 62 and 63 are connected to the output of the power amplifier 79 in such a way that the forces acting on the magnet 60 add up, so that there is a positive mechanical feedback. This positive mechanical feedback occurs when the force acting on the magnet 60 is in the same direction as the movement of the carrier 10.
  • the expansion of the main positive wave of the output signal of the operational amplifier 78 and the concomitant shortening of the negative main bet have the effect that the forces exerted on the magnet 60 by means of the coils 62 and 63 delay the movement of the carrier 10 during that part of the oscillation in which the output signal of the operational amplifier 78 is positive and the output signal of the operational amplifier 68 is negative. This reduces the net amount of force transmitted to the carrier 10 via the coils 62 and 63. In this way, the energy supplied to the carrier 10 can be controlled by means of the amplitude of the negative voltage set on the potentiometer 74, so that the carrier 10 reaches the desired amplitude during its spatially linear movement.
  • Carrier 10 is used in a non-impact printer that has a record carrier like paper 80.
  • This paper 80 can be designed as an electroerosion paper.
  • a plurality of writing devices 81 can be arranged on a plate 82, which can be designed as a printed circuit, and which is fastened to the carrier 10 by holding their opposite ends on the frame 14 of the carrier 10, for example by means of screws 83 .
  • Each of the writing devices 81 is connected to a stationary circuit board 86 by means of a flexible electrical conductor 85.
  • the conductor 85 is connected to an electrode 87 which is carried by the plate 82, the electrical connection between the conductor and the electrode preferably being made in a bore in the plate 82 by soldering.
  • the electrode 87 extends through a guide 88 (FIG. 3) which consists, for example, of graphite and is arranged in the plate 82.
  • the electrode 87 is in continuous contact with the paper 80, the paper being supported at least in the region of the electrode 87 by means of a support 89 (FIG. 2).
  • the guide 88 allows the electrode 87 to remain in contact with the surface of the paper 80 even when it is worn.
  • Paper 80 is moved in the direction of arrow 90 (FIG. 2). This direction is perpendicular to the axis along which the carrier 10 swings. The directions of the spatially linear movement of the carrier 10 along its axis are indicated in FIG. 2 by the arrow 91.
  • each of the writing devices 81 is controlled by means of suitable electronic control circuits so that it either carries current or not at any of the plurality of positions which it can take during the movement of the carrier 10.
  • the area swept by each electrode 87 during the reciprocating movement of the carrier 10 slightly overlaps the areas swept by the neighboring electrodes.
  • the paper 80 can either advance after the vibration of the carrier 10 has ended or can be moved continuously. When the paper advances as soon as the movement of the carrier 10 in both directions is completed, the reciprocating movement of the carrier 10 creates a continuous straight line.
  • the invention provides for the introduction of a phase shift between the intermediate frames 17 and 21 to compensate for the continuous movement of the paper 18.
  • printing can also be carried out while the carrier 10 is being displaced in both directions.
  • the phase shift occurs in opposite directions so that the amplitude of the movement of the carrier 10 is not affected while being changed from its spatially linear movement along the axis to a predetermined path 92 (Fig. 5), in which a curve of the shape a lying figure eight (lemniscate) is described.
  • the direction of the paper transport is indicated in Figure 5 by an arrow 93.
  • the printing is only carried out after the carrier 10 has passed through the end sheets of the lying eight, i. that is, because of the continuous paper movement, printing takes place while the carrier 10 has left the sheet at the end of the lying figure eight until the start of the next sheet. Because of the relative movement of the paper 80, straight lines now result.
  • each of the electrodes 87 (FIG. 2) describes the writing devices 81 continuously moving paper in the direction of arrow 96, an uninterrupted curve 95, but printing is only between lines 97 and 98.
  • the broken line 99 shown in FIG. 6 denotes the path on the paper 80 which one of the electrodes 87 travels when the paper 80 is inclined and the carrier 10 follows the predetermined path 92 (FIG. 5), but on a somewhat smaller scale, follows.
  • the movement of the carrier 10 (FIG. 2) according to the predetermined path together with the inclination of the paper 80 produces a stretched raster line than results if only the paper 80 is inclined in one direction of movement of the carrier 10 for printing.
  • the given path of the carrier 10 travels only about a fifth of the distance from the axis along which the carrier 10 performs its spatially linear movement compared to the path 92 of FIG. 5 when the paper 80 is not is inclined and printing takes place in both directions of movement of the carrier 10.
  • the phase shift mentioned between the intermediate frames 17 and 21 is generated by separately driving the two intermediate frames.
  • the intermediate frame 17 has a permanent magnet 100 which is held in a bracket 101 which, similar to the bracket 65, is fastened to the plate 22 on the intermediate frame 17.
  • Coils 102 and 103 are arranged on the main frame 40 and face the south pole and north pole of the permanent magnet 100, respectively. The coils 102 and 103 are switched so that the forces acting on the magnet 100 add up. When direct current flows through the coils, the south pole of the magnet 100 is attracted by the coil 102, while the north pole is repelled by the coil 103. As a result, the intermediate frame 17 is moved to the right in FIG. 1.
  • the second intermediate frame 21 has a permanent magnet 104 which is held in a clamp 105 attached to the intermediate frame 21.
  • Coils 106 and 107 are arranged on the main frame 40 so that they face the magnets 104, respectively the south and north poles.
  • the coils 106 and 107 are again connected in series for the addition of the forces acting on the magnet 104, and when a current flows through the coils 106 and 107 in the appropriate direction, the intermediate frame 21 is moved to the right in FIG. 1. Analogously, when the current direction is reversed, the intermediate frame 21 is shifted to the left in FIG. 1.
  • the intermediate frames 17 and 21 can be simultaneously moved in opposite directions. This has the effect that the path of the carrier 10 is no longer spatially linear but instead assumes the shape of the curve 92 (FIG. 5) corresponding to a lying figure eight. This enables printing along a stretched line with continuously moving paper during the movement of the carrier 10 in both directions.
  • the carrier 10 oscillates at its resonance frequency.
  • This resonance frequency is one of the four natural frequencies with which the system according to FIG. 1 can oscillate.
  • the next type of vibration is the desired one. It has a higher frequency than the one described above.
  • the carrier 10 and the intermediate frames 17 and 21 oscillate in phase with one another but out of phase with the main frame 40. This type of oscillation is excited by scanning the movement of the carrier 10 by means of the coils 66 and 67 and by supplying positive mechanical feedback forces by means of the coils 62 and 63.
  • the highest oscillation frequency occurs when the intermediate frames 17 and 21 are in phase with one another, but out of phase with the carrier 10. Since the force supplied via the coils 102 and 103 is always out of phase with the force supplied via the coils 106 and 107, This type of oscillation can never be excited when the coils 102, 103, 106 and 107 are energized.
  • the mass of the main frame 40 is normally at least an order of magnitude larger than the total mass of the carrier 10 and the intermediate frames 17 and 21. However, this is not absolutely necessary for the arrangement to work satisfactorily.
  • the amplitude of the vibration of the main frame 40 becomes smaller with respect to the amplitude of the movement of the carrier 10 and the intermediate frames 17 and 21. It is desirable that the The amplitude of the main frame 40 is as small as possible, so that the mass of the main frame 40 could be approximately fifty times greater than the total mass of the carrier 10 and the intermediate frames 17 and 21.
  • the paper 80 can be used for the paper 80, for example a dielectric paper.
  • the electrodes 87 would be fed continuously over the distance over which the printing should occur, instead of supplying them with pulses, as in the case of the electroerosion paper.
  • a dielectric paper is used, a toner must of course be used after printing in order to visualize the charge image formed on the dielectric paper.
  • inkjet nozzles can also be used as printing devices if the printing can be carried out asynchronously instead of synchronously, as in the case of the electrodes. This is because the speed of the carrier 10 is not constant, so that it would be very difficult to deposit the ink drops on the paper synchronously.
  • the carrier 10 has so far been described in connection with a printer.
  • a suspension device according to the present invention can be used in any environment in which a body is to perform a spatially linear movement when it vibrates at its resonant frequency.
  • An advantage of the invention is that no torque occurs on the frame when the carrier system is vibrating. Another advantage is that the vibration does not have to be counterbalanced. Furthermore, no exact matching is necessary.
  • the structure is very simple and no special bearings are required to enable the wearer to move in a spatially linear manner.

Landscapes

  • Character Spaces And Line Spaces In Printers (AREA)
  • Fax Reproducing Arrangements (AREA)
  • Impact Printers (AREA)
  • Apparatuses For Generation Of Mechanical Vibrations (AREA)

Claims (4)

1. Dispositif de suspension pour un corps (10) oscillant à la fréquence de résonance, destiné à être utilisé dans des imprimantes dans lesquelles le mécanisme d'impression (81) mis en place sur ledit corps, et se déplaçant façon continue dans une direction donnée le long d'un support d'enregistrement (80), oscille dans les deux sens, selon une direction perpendiculaire à cette dernière, le long de l'axe de déplacement du corps (10), et écrit ainsi des lignes de trame sur toute la largeur du support d'enregistrement; ledit corps comportant deux parties (11 et 12) séparées l'une de l'autre le long de l'axe de déplacement et reliées entre elles par un cadre (14); les parties (11 et 12) étant reliées, au moyen de paires de ressorts à lames (15, 16, 19, 20) s'étendant perpendiculairement audit axe de déplacement, à deux cadres intermédiaires (17 et 21) séparés, disposés sur des côtés opposés de l'axe de déplacement du corps (10); de son côté, chacun de ces cadres intermédiaires (17 et 21) étant relié, au moyen d'un dispositif à ressorts (49-52, 37, 38, 47, 48), également disposé transversalement audit axe de déplacement et situé dans un plan commun vis-à-vis des paires de ressorts à lames, à un cadre principal (40) dont la masse est supérieure à celle du corps (10) et des cadres intermédiaires (17 et 21); les paires de ressorts à lames (15, 16, 19, 20) et le dispositif à ressorts (49-52, 37, 38, 47, 48) subissant un fléchissement dans le même sens, et le corps (10) pouvant donc exécuter une oscillation le long de son axe de déplacement; caractérisé par des moyens (100, 102, 103, 104, 106, 107) en vue de l'actionnement individuel, c'est-à-dire séparé, des cadres intermédiaires (17,21) dans la direction de l'axe de déplacement du corps (10), dans le but de produire un déphasage entre les oscillations des cadres intermédiaires (17, 21), de telle sorte que l'oscillation du corps (10) s'effectue suivant un chemin d'oscillation (92) prescrit s'écartant de l'axe de déplacement linéaire; de manière à opérer une linéarisation des lignes de trame produites, par le mécanisme d'impression (81) sur le support d'enregistrement (80) tandis que celui-ci est transporté de manière continue.
2. Dispositif conforme à la revendication 1, caractérisé par le fait que le mécanisme d'impression (81) comporte un grand nombre d'éléments d'impression reliés au corps (10), éléments qui présentent entre eux des distances égales selon la direction de l'axe de déplacement du corps (10).
3. Dispositif conforme à la revendication 2, caractérisé par le fait que les éléments d'impression sont constitués par des électrodes (87), et que, comme support d'enregistrement (80), on utilise un papier à électroérosion.
4. Dispositif conforme à la revendication 2, caractérisé par le fait que les éléments d'impression sont formés de buses d'une imprimante à jet d'encre.
EP79104720A 1978-12-29 1979-11-27 Dispositif de suspension pour un corps vibrant à la fréquence de résonance Expired EP0012860B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US05/974,593 US4227455A (en) 1978-12-29 1978-12-29 Suspension arrangement for an oscillating body
US974593 1978-12-29

Publications (2)

Publication Number Publication Date
EP0012860A1 EP0012860A1 (fr) 1980-07-09
EP0012860B1 true EP0012860B1 (fr) 1983-05-25

Family

ID=25522232

Family Applications (1)

Application Number Title Priority Date Filing Date
EP79104720A Expired EP0012860B1 (fr) 1978-12-29 1979-11-27 Dispositif de suspension pour un corps vibrant à la fréquence de résonance

Country Status (6)

Country Link
US (1) US4227455A (fr)
EP (1) EP0012860B1 (fr)
JP (1) JPS6018297B2 (fr)
CA (1) CA1148210A (fr)
DE (1) DE2965539D1 (fr)
IT (1) IT1165407B (fr)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5514216A (en) * 1978-07-14 1980-01-31 Nec Corp Printer
ATE22416T1 (de) * 1982-07-03 1986-10-15 Mannesmann Tally Gmbh Vorrichtung fuer die lagerung des schwingrahmens in einem matrix-zeilendrucker.
EP0109329A3 (fr) * 1982-11-03 1986-06-11 GENICOM Corporation Mécanisme d'entraínement équilibré pour tête d'impression
US4637307A (en) * 1983-09-13 1987-01-20 Genicom Corporation Automatic mechanical resonant frequency detector and driver for shuttle printer mechanism
US4599007A (en) * 1984-10-09 1986-07-08 Hossein Khorsand Reciprocating drive mechanism
US4741267A (en) * 1986-03-26 1988-05-03 Mannesmann Tally Corporation Shuttle drive for reciprocably mounted line printer carriages
US4749294A (en) * 1987-07-01 1988-06-07 Printronix, Inc. Printer hammerbank cam drive having pulsed startup
GB2221654B (en) * 1988-07-12 1992-10-28 Citizen Watch Co Ltd Printing apparatus including means for absorbing vibration and for locking vibrating portion against movement
US4921365A (en) * 1988-08-10 1990-05-01 Royden C. Sanders, Jr. High speed shuttle printer
US6056454A (en) * 1998-10-05 2000-05-02 Gerber Technology, Inc. Method and apparatus for printing on a continuously moving sheet of work material
EP2730418B1 (fr) * 2012-11-12 2015-06-03 Lite-on Mobile Oyj Appareil et procédé de distribution 3D
EP3389801A4 (fr) * 2015-12-14 2019-07-10 Indian Industries, Inc. Panier de basket-ball avec amortissement des vibrations

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2753176A (en) * 1956-07-03 Elastic suspension device
US2985777A (en) * 1956-10-31 1961-05-23 Homer W Giles Vibratory motor drive
US3295808A (en) * 1965-04-16 1967-01-03 James E Webb Parallel motion suspension device
DE2020127A1 (de) * 1970-04-24 1971-11-18 Rena Bueromaschf Gmbh Schreibwerk mit Mosaikdruckkopf
US3748553A (en) * 1971-10-08 1973-07-24 Cleveland Machine Controls Self-tuned vibratory feeder
FR2135998A5 (fr) * 1972-03-08 1972-12-22 Commissariat Energie Atomique
US3742846A (en) * 1972-03-31 1973-07-03 Ibm Wire printer with print head moved in figure eight pattern
FR2300678A1 (fr) * 1975-02-13 1976-09-10 Logabax Dispositif d'impression pour imprimantes rapides
FR2368361A1 (fr) * 1976-10-20 1978-05-19 Oki Electric Ind Co Ltd Imprimante par points

Also Published As

Publication number Publication date
IT7928249A0 (it) 1979-12-20
US4227455A (en) 1980-10-14
DE2965539D1 (en) 1983-07-07
JPS5591676A (en) 1980-07-11
IT1165407B (it) 1987-04-22
JPS6018297B2 (ja) 1985-05-09
EP0012860A1 (fr) 1980-07-09
CA1148210A (fr) 1983-06-14

Similar Documents

Publication Publication Date Title
EP0012860B1 (fr) Dispositif de suspension pour un corps vibrant à la fréquence de résonance
DE4334267C2 (de) Torsionsvibrator
DE2221698A1 (de) Verfahren und Einrichtung zum Beeinflussen einer Fluessigkeitsstroemung
DE3880781T2 (de) Verfahren und Vorrichtung zum Fördern eines Gegenstandes mittels Vibration.
DE3041170A1 (de) Linearantrieb, insbesondere fuer schnelldrucker
CH632451A5 (de) Vorrichtung zur erzeugung mehrerer fluessigkeitstroepfchenstroeme, insbesondere fuer einen tintenstrahldruckkopf.
DE69932463T2 (de) Tropfenerzeugungsvorrichtung
DE2630931B2 (de) Antriebseinrichtung für einen Nadeldrucker
DE2134655B2 (de) Betätigungsvorrichtung für mit hoher Geschwindigkeit zu bewegende Getriebeteile
DE2927415C2 (de) Mosaikdrucker
DE2724687A1 (de) Tintenstrahldrucker zum bedrucken einer sich bewegenden bahn und dazu angewendetes verfahren
DE3003279C2 (fr)
DE2952267A1 (de) Vorrichtung zur erzeugung von tintentroepfchen fuer tintenstrahl-drucker
DE2262609A1 (de) Belegvorschubanordnung
EP0145881B1 (fr) Accouplement amortisseur de vibrations, p.e. pour imprimantes matricielles
DE2229474A1 (de) Vorrichtung zum Festklemmen von Bahnmaterial, insbesondere für einen Drucker
DE2110235A1 (de) Düsendrucker
DE2249125C2 (de) Drucker mit einer Auswählanordnung für Druckelemente
DE60034627T2 (de) Resonanzvorrichtung wie Schläger oder Krafterzeuger
DE2749695A1 (de) Tintenstrahldrucker fuer magnetisierbare tinte
DE3305703A1 (de) Druckkopf fuer einen punktdrucker
EP0239077B1 (fr) Imprimante, en particulier imprimante matricielle par lignes
DE2556779A1 (de) Elastischer schwingkoppler zum vereinzeln und vorschieben von belegen
DE2750684B2 (de) Ablenkvorrichtung für Tintentröpfchen für einen Tintenstrahl-Schreiber
DE4418451C2 (de) Schwingmechanismus für einen Pendeldrucker

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Designated state(s): DE FR GB

17P Request for examination filed
GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Designated state(s): DE FR GB

REF Corresponds to:

Ref document number: 2965539

Country of ref document: DE

Date of ref document: 19830707

ET Fr: translation filed
PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT

26N No opposition filed
PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 19891025

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19891031

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 19891130

Year of fee payment: 11

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GB

Effective date: 19901127

GBPC Gb: european patent ceased through non-payment of renewal fee
PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Effective date: 19910731

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Effective date: 19910801

REG Reference to a national code

Ref country code: FR

Ref legal event code: ST