DE2008323A1 - Lighting device for displaying characters - Google Patents

Description

PATENT LAWYERS
DIPL-ING. GURT WALLACH

DR. TINO HAIBACH

β Munich 2, Feb 23, 197Q

OUR MARK: 1 2 348

PATH COMPUTER EQUIPMENT, TSGi Stamford, Connecticut, Y.St.A.

Lighting device for displaying characters

The invention relates to devices for switching on of lamps and concerns, especially one with high-speed lighting device for Use in conjunction with eliminating impact forces working high-speed printers, character display devices and the like, wherein according to the invention lighting of high intensity can be achieved even at high operating speeds, so that the device can advantageously be used in connection with printers, character display devices and the like operating without impact forces, which compared to known devices this type can operate at higher speeds and soften a longer lifespan.

In the case of cup devices, pressure devices are used as peripheral devices used to a fairly large extent. the Computers currently in use can run at work that is well beyond the nanosecond range. However, the efficiency will such computers are limited by the lower operating speeds of the printing devices, which are

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connection with computers as peripheral devices »With impact force printers, which are widely used up to now in computers and data processing equipment, have the disadvantage that a mechanical movement must be generated in order to cause the reciprocating print hammers with the impact force on a surface. These relatively low operating speeds of these mechanical printing devices have led to the development of non-impact printers which employ various lighting methods; Usually flash lamps are used, by means of which light is briefly and selectively passed through openings that have the shape of characters; the light beams thus formed are then made to strike a sensitized paper or emulsion provided on a transfer drum so that the characters are finally printed on the constant speed moving paper. According to a known method, which is already widely used, a rotating drum is used, on the circumferential surface of which several rows of characters are provided, each of these rows being substantially parallel to the longitudinal axis of the drum. A plurality of lamps are also provided, the number of which corresponds to the total number of characters within each row, and these lamps are selectively switched on to cause light to pass through certain characters of a row to effect a momentary exposure of the sensitized emulsions which either appear a transfer drum are provided or arranged as a coating directly on the paper that is to be printed with the characters. So that a high working speed can be achieved, the flashes of light must be of extremely short duration. Therefore, if the photosensitive emulsions are to be activated to a sufficient extent, it is necessary to work with sufficiently intense light to compensate for the shortness of the period of time during which this

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Light falls on the emulsion. As a result one has to have lamps provide that generate the maximum illuminance within the shortest possible time span and are also suitable are to be pressed frequently within a short period of time.

Because of the required great intensity of light, and since the lamps are operated repeatedly within each unit of time, the lamps generate a large amount of heat, through which the lamps are damaged, and which lead to a considerable extent Shortening the useful life of the lamps resulted.

The invention is characterized in that it is a Provides lighting device that allows lamps at a very high working speed each to the To switch on duration of an extremely short period of time, whereby the light intensity of the switched-on lamps is either considerably higher than that which can be achieved with the aid of known methods Intensity, or where the intensity can be equal to the intensity obtained using known methods can be achieved if, according to the invention, considerably lower operating and trigger voltages are applied to the lamps, and wherein the device according to the invention also enables the heat generated by the lamps during operation to be quickly removed, so that a considerable increase in the life of the lamps is achieved.

More precisely, the invention provides an elongated one that can be driven at an extremely high speed Drum forward. On the peripheral surface of the hollow drum are String letters or other characters spaced apart arranged, and each of these rows comprises several transparent or translucent openings of the same shape, ' where the shape of the openings corresponds to the shape of the letter in question or sign. The letters or characters of each row are different from the letters or characters all other Eeiheru distributed over the circumference of the drum

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2ÜQ8323

Inside the drum there is a set of fixed flash lamps that generate light of high intensity « This arrangement comprises a honeycomb structure which forms a plurality of light guide channels, each of which is a specific one Flash lamp is assigned to the light generated by the lamp in question or through a specific character to conduct within a certain row and thus to expose the photosensitive surface arranged near the drum and to shield all light emanating from the associated lamp so that the light from all other channels is kept away so that no stray light from a lamp can get to one of the adjacent channels.

Each lamp is provided with an anode and a cathode. The cathodes can all be connected to one another, while the anodes are selectively supplied with a current by drive circuits represented by a logic Circuit can be controlled so that selected lamps can be switched on within a certain period of time, during which the honeycomb construction has a certain series of characters adjacent.

The lamps connected in this way are triggered by switching on a trigger electrode, which has the form of a massive elongated rail made of an electrically conductive material and has several essentially semicircular grooves or cutouts which are spaced along one side of the rail and are spaced apart from it serve to enclose an associated lamp and hold it in place. The walls of the semicircular grooves are preferably clad with a highly reflective material which is additionally polished to form a highly reflective surface which reflects the light rays incident on the material, so that substantially all of the light from each lamp in the associated light channel or Schacht guided: and concentrated, the conductive rail has three>. "Fgac; m zu er.C *" ll ~ n, that is, it should, firstly, the light-

009836/1942

reflect rays; secondly, it acts as a trigger electrode for all lamps and thirdly, it forms a device to dissipate the heat generated by the lamps. In most of the methods known to date, a wire is used used, which is so wrapped around the lamp that it forms one or two turns on the outside of the lamp envelope arranged approximately in the middle between the ends of the Koöben are. A disadvantage of this method is that the light rays impinging on the wire windings are retained, and that this reduces the intensity of the flash of light caused by the associated, the Shape of a character having opening of the drum falls. The conductive rail is of considerable thickness and encloses it each lamp to an extent that is sufficient to trigger the lamp quickly when it was not previously possible Ensure pulse frequencies, and the rail also allows flashes of light from a using known method to generate unachievable intensity or alternatively light flashes of the intensity usual up to now Application of lower trigger voltages to generate

In another embodiment of the invention, the Lamp assembly takes the form of a single elongated cylindrical Enclosure that is hermetically sealed at both ends and filled with an ionizable gas. In the hollow cylindrical enclosure, which is preferably made of a transparent material, are numerous disk-shaped Components arranged parallel to one another and separated along the enclosure by evenly spacing them. the Disks can be either pore-free or porous, so that they either separate the gas contained in each chamber from the neighboring ones Keep chambers away, or that the gas can pass unhindered from one chamber into the neighboring chambers permit. The disk-shaped components define several individual chambers, each of which is considered the equivalent of a single one Discharge lamp of the type described above can be considered. Each chamber has two electrodes

OQ9836 / 19 small

provided, which partially protrude into the associated chamber and partially opposite the outer surface of the enclosure protrude so that they are connected to electrical charging circuits can be. In each chamber, the two electrodes are on the same diameter as the cylindrical enclosure aligned and separated by such a distance that they can cause a gas discharge in the chamber »With this one Embodiment is the trigger electrode from an elongated piece of an electrically conductive flat material made, which is curved in a circular arc. This piece of sheet material or the conductive plate rests against the outer surface of the enclosure containing the lamps and extends is only about half the circumference of the enclosure. The plate is made of a metal of good electrical quality Conductivity and is coated with a highly reflective material; this coating is also polished to to further improve the reflectivity. The conductive plate has the task of holding the lamps in the individual chambers to trigger to dissipate heat from the lamp assembly and the light energy generated in the chambers in the direction of a Concentrate the area that is to be illuminated within certain parts of the area «

In a preferred embodiment of the invention, which can be operated as a high-speed printer operating without impact forces there are numerous input terminals for supplying encrypted information representing a message intended. The incoming information fed to the various input terminals can be simultaneously and they are fed to the input terminals in digital form one after the other until each character or a group of characters has been transferred to a first group of buffer or intermediate registers which are assigned to each input terminal. Once the buffer or shift register are filled, their content is parallel to a second Group of buffer registers assigned to each input terminal fed. Ba the device is designed so that it

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Prints characters that are represented by the ASCII code, but which should make it possible to receive information that is encrypted ( in any other way, e.g. teleprinter signals, Baudot signals, binary encrypted decimal numbers and the like, a code converter is provided through which all Code signals that do not correspond to the ASCII code can be converted into signals corresponding to the ASCII code. Of course, those messages sent to the input terminals that are already encoded according to the ASEII code can be processed without the code conversion «.

After completing the "Umkodierung" or after the arrival of a message already encrypted according to the ASCII code. the message is transferred to storage means in each Can save a large number of messages at the time ·. Each message fed to an input terminal is followed by a Identifies signal which marks the end of a message stored in the storage means, and this Signal is also used to switch a control circuit, thereby indicating the fact that a complete Message from a specific input terminal has been completely accepted. In the preferred embodiment the storage means are designed as disk storage, in which each disk has several tracks, and in each track is assigned a read and write head.

A printing process is only initiated after a complete Message received and stored by the storage means has been. The printer is equipped with a synchronization circuit provided, which be designed in the form of a disk rotating together .mit the drawing drum can. This disk has one or more openings or Open slots that serve for each turn of the disc and thus also, light from the drum once or several times a light source arranged on one side of the disk from a light source provided on the other side of the disk Dropping the photocell. The fact that the photocell

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is lit, instantly indicates that the "predetermined Row "of characters is moved past the honeycomb structure in the next instant, and that along this Eeihe arbitrarily chosen characters can be illuminated. The message is transferred from disk to part of core storage transferred, from where it is then entered character by character line by line into an intermediate register, by means of the first character and the first line of which is compared with the code for the character of the "predetermined series" to generate an actuation signal for each selected character position in the "predetermined row". After all the signs the line to be printed have been checked, the trigger electrode for the flash lamp assembly is switched on, so that only those selected lamps are switched on, which indicate the presence of the selected characters in the printable area Represent line. As soon as the last sign of the to be illuminated ^ rush has been checked to match it with the intermediate register To compare input characters, the coding circuit and a counting device of the logical Circuit for switching the lamps on shortly before the point in time at which the next line in the sequence of lines appears advances so that the characters stored in the intermediate register match the characters in the next line for the purpose of checking be compared. This process continues until the drum has made one complete revolution; as soon as this is done, the counters and The register is reset and the next character is transferred from the memory to the intermediate register in order to find similar ones Way to be tested. Thus, each character of the message to be printed is associated with the code signals for each of the Compares signs arranged in rows around the circumference of the drum and illuminates the sign, to activate the sensitized emulsion within one complete revolution of the drum, which at one preferred ^ embodiment ndt rotates 1200 rpm. At a \ yr:;. 3c:.;) ~ embodiment in which every

0.09836 / 1942

Line contains 120 characters, the information can thus can be printed out at a speed of 600 lines / min. If necessary, however, the facility can also be used Modify slightly to allow 600 or 1200 or 3600 or even? 200 lines to be printed every minute, of those each comprising 120 or more characters. Thus, the facility enables more than 850,000 per minute Print out characters.

In a further embodiment of the invention, the image drum and the lighting means can be used in a character display device in which the generated light which passes through each of the images arranged on the circumference of the drum can be caused either on a ground glass or as a memory to fall acting phosphor which is photoluminescent, so that it is an optically generated observable image that can be maintained as long as is desired or is determined by the particular application. When the light beams whose cross-sectional shape of the shape of a particular character _v on the image drum, falling on a screen, the illumination of each row of characters can be repeated during each of the repetitive revolutions of the drum Drum speed of Ϊ200R / min which is chosen en characters of each particular row of the drum are illuminated 20 times every second, so that the human eye has the impression that the characters are represented essentially uninterrupted doubles the circumferential area of the image drum, so that each character is illuminated twice during each revolution, and that thus each character is illuminated 40 times every second. In this case, the human eye would have the impression of uninterrupted illumination, because it is not capable of such a high frame rate

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detect a flicker.

According to the invention, a novel lighting arrangement for "use in high-speed printers, character display devices and the like working without impact forces is to be created, which is suitable for producing lighting at high intensity and at very high repetition frequencies, which up to now has been made with the aid of known methods Furthermore, the invention provides a novel lighting arrangement for use in non-impact high speed printers, character display devices and the like, which comprises a novel lamp arrangement in which a common trigger electrode is used for the flash lamps, which component serves to switch on the To trigger lamps of the array, to concentrate all of the light from the lamps in a first direction to increase the intensity of the light used to illuminate an image, and to act as a heat dissipation device through which the d The heat generated by the lamps is quickly dissipated. Furthermore, the invention provides a new type of high-speed printer that works without impact forces, which is suitable for printing messages on ordinary or sensitized paper, whereby the messages can be fed to the printer from several independent sources, and the use of a new type of lighting arrangement facilitates the operation of the Printer with a high working speed.

The invention and advantageous details of the inven tion are explained in more detail below with reference to schematic drawings of exemplary embodiments.

Fig. Λ is a schematic representation of a known type of flash lamp and the associated actuation circuit.

009836 / 19A2

Fig «1a shows the flash lamp according to FIG. 1 in one
Front view o

^{J {} -Fig. 2 is a perspective view of a
Part of a lamp arrangement according to the invention. ,

Figure 2a is an end view of the lamp assembly of FIG
Fig. 2. *.

Fig. 2b shows part of the lamp arrangement according to. Fig. 2 in plan ο. ·.

Figure 2c is an exploded perspective
Representation of another embodiment of a lamp arrangement according to the invention «

3 shows schematically a circuit for switching on selected lamps in the lamp arrangement according to FIG. 2.

Fig. 4 shows in perspective an image drum with a
Lamp arrangement according to Figo 3

FIGS. 5a to 5d show the honeycomb structure according to FIG. 4 in a side view or «, a front face or in the plan or in an exploded view »

6a and 6b show in a side view or
perspective two embodiments of image drum drive devices. ■

7 shows in a block diagram a high-speed printer according to the invention which works without impact forces
an image drum according to FIG. 2c and a lamp arrangement according to FIG. 4.

8 shows the logic in a block diagram
Circuit for selectively switching on the lamps of the arrangement according to FIG. 4.

009836 / 19A2

Fig. 9 shows in perspective part of the in a Image drum used by character display device Fig. 4.

10 and 11 each show, in a side view, further embodiments of printing devices in which an image drum assembly according to the invention is used.

1 shows a switch-on circuit for a miniature gas discharge lamp 11 with a glass bulb 12, in which includes an anode 13 and a cathode 14 of each of which protrudes a part to be connected to an electrical circuit. The glass flask The lamp contains a gas which is ionized when a voltage is applied to the anode and the cathode and at the same time a trigger electrode 15 of the lamp a high voltage pulse feeds; the trigger electrode 15 consists of at least one the glass bulb 12 enclosing wire loop, which is substantially in the middle between the inner ends of the Anode 13 and the cathode 14 is arranged. A voltage Vo is applied to the input terminals of the switch-on circuit, so that essentially the same voltage Vo on a capacitor connected between the anode and the cathode C appears. Usually the voltage Vo is present at the input terminals when the lamp is in the idle state When the lamp is to light up, the voltage Vo on the input terminals is removed and the input terminals are practically short-circuited by a silicon-controlled rectifier is made conductive, so that the capacitor C discharges via the gas discharge lamp 11. If at the same time a high Trogger tension in the form a pulse is supplied to the trigger electrode 15, the gas in the glass bulb 12 is ionized, whereupon there is light releases in all directions, as indicated by arrows 17 in FIG. 1 a.

The invention provides, inter alia, a lamp construction in which there is the use of a novel reflector

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made of an electrically conductive material that allows to reduce the amount of electrical energy that is consumed with each flash of light from a miniature gas discharge lamp »

The life of a miniature lamp as shown in FIG Type depends on the amount of energy consumed with each flash of light and the number of energy consumed in each second generated flashes of light «Part of the destroyed in the lamp Energy is "converted into electromagnetic radiation that lies in both the visible and the invisible part of the spectrum. The spaktral energy output is directed according to the properties of the gas used, the gas pressure and the permeability of the for the manufacture of the lamp bulb glass used «According to Fig. 1a, the radiant energy is emitted in all directions, so that the energy that a point P comes from the lamp 11 by a Distance d is separated, a function of the arc length L, the surface intensity I of the arc and the distance d is between lamp 11 and point P. Thus, the illumination intensity E at the point P can be determined by the equation E »k / (LI / d), in which k is a constant of proportionality is·

In the known arrangement of FIGS. 1 and 1A the intensity of the illumination at the point P is considerably reduced by the fact that the lamp 11 shines the light in all directions gives off, so that a large part of the light is lost. In addition, the effect placed around the glass bulb 12 Electrode 15 in the form of a wire loop that a substantial Part of the emitted light is retained, whereby the light intensity at the point P is further reduced. Furthermore, the heat generated when generating the flashes of light cannot be dissipated quickly, so that all parts of the lamp heated very strongly and for a long time; this damages the lamp and its useful life is shortened considerably and there is a risk that an unstable arc is generated.

009836/1942.

2, 2a and 2b, the invention provides a novel lamp assembly with an elongated rod 20 made of a conductive material, which is so "machined or otherwise shaped that it has a plurality of semicircular grooves 21 along a surface, which in uniform The walls of these grooves are coated with a highly reflective material which has also been polished to a mirror finish to provide a surface of excellent reflectivity A miniature gas discharge lamp 11 is arranged in each of the semicircular grooves 21; only three of these lamps are shown in FIG. 2 for the sake of simplicity. 2b connected to a supply line 22, which is not shown on a e source of high voltage trigger pulses is connected so that a trigger voltage pulse can be applied to the conductive rod while an anode voltage is simultaneously applied to selected individual gas discharge tubes of the assembly. According to Fig. 2b, the light beams of a single lamp are transmitted, in all directions, but causes the high reflectivity of the gas discharge lamp 11 containing semi-circular groove according to Fig. 2k, that incident on the reflecting surface of beam thrown back and ± m essentially in the direction of the to be illuminated point P are concentrated, whereby the illumination intensity at the point P is considerably increased, even if it is assumed that the trigger voltages, the anode voltages and the tube characteristics are the same as in the above-described devices of known art Alternatively, it is obvious to achieve the same lighting intensity as in the known arrangements in that the trigger voltage and the anode voltage are considerably reduced, whereby the lamp is a smaller one

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Amount of heat is exposed while looking at the to be illuminated Point P the same light intensity is maintained o In addition, the semicircular grooves are in comparison with the trigger electrode 15 formed by a single loop according to Fig. 1 in contact with a substantial part of the outer surface each lamp, thereby greatly enhancing the effect of the trigger voltage applied to the conductive rod 20 will »Furthermore, due to the high thermal conductivity of the rod 20, each lamp generates a flash of light heat generated by the rod 20 is quickly dissipated from the lamps and compared to the surface of each individual Lamp covered by an extraordinarily large area give, and this fact contributes to a significant extent to extending the life of the lamps. Another one The notable feature of the conductive rod 20 is that, unlike the wire loop 15, it is a lamp does not completely surround, so that a further increase in the illumination intensity is achieved at point P, while the wire loop 15 has a Te 1 of in the direction of holds back the point P of emitted light.

All of the features described above contribute to an increase in the flux density of the illumination, so that it is possible to reduce the amount of electrical energy which is supplied to the capacitor C of FIG. 1, and also the To increase the pulse frequency, which is more than twice as high as the pulse frequencies customary up to now without increasing the operating temperature. Hence it is possible to get a large number of in the out Fig. 2 visible way to selectively trigger juxtaposed lamps and the ignition of a large number of To effect lamps within the assembly with the aid of a simple trigger electrode of relatively simple construction.

2c shows a further embodiment of a lamp arrangement similar to that of FIG. 2; this arrangement

. ■ 00 9836/1942

comprises a hollow elongated enclosure 150 made of a transparent material, e.g. glass. The ends 150a and 15Above the glass enclosure are hermetically sealed and the enclosure contains an ionizable gas, e.g. Xenon. Inside the enclosure I50 are several disk-shaped ones Components I5I made of an insulating material in parallel to each other and at regular intervals along the enclosure. These components can be either porous or be provided with openings so that the Gc.s contained in the enclosure to all through two disc-shaped components

151 delimited chambers can reach. Alternatively, the P disc-shaped components are made of a solid pore-free insulating material, so that they each in Enclose amount of gas contained in a chamber.

Multiple anodes 152 that form a first group of electrodes form, are arranged in such a way that each anode is in one their associated chamber extends into it and also protrudes through the wall of the enclosure I50 to the outside, so that they with an external charging circuit can be connected. The anodes

152 are arranged parallel to each other, by uniform Distances separated and aligned in radial sighting with respect to the cylindrical enclosure 150 made of glass. on similarly, several are a second group of electrodes

P forming cathodes 153 are provided, which also protrude into the associated Ka mer and through the wall 'the Enclosure I50 made of glass extend outwards to adhere to the electrical charging circuit can be connected. The anodes 155 are also arranged parallel to one another, through equally spaced apart and aligned on the same radial plane as the anodes 152.

The trigger electrode for all lamp chambers is formed by an elongated component 154 which consists of a Metal with good conductivity. The conductive component

XBt is curved in the shape of an arc of a circle and stands "ecensat-a on the representation in Pig. 2c in surface contact

Q09836 / 1942

to the back of the glass tube 150. Thus, this is conductive Component 154 in close proximity to all along the enclosure 150 distributed lamp chambers and it can fulfill the three tasks mentioned above, i.e. it acts as a trigger electrode for the lamp chambers, it concentrates the light beams in the manner indicated by dash-dotted lines 155 and 156 in FIG. 2c, respectively a certain zone within an area to be exposed 1571 and it finally serves to dissipate the heat, which is generated in each of the lamp chambers in which a discharge takes place, so that the entire arrangement on is kept at a low operating temperature. The embodiment According to FIG. 2c, in comparison to that according to FIG. 2, proves to be more advantageous if the lamp arrangement must be housed in a narrow space.

Fig. 3 shows schematically a circuit by means of which the aforesaid lamps can be selectively turned on, arranged in the manner shown in Fig. 2; in For the sake of simplicity, only three such lamps are shown in FIG.

According to FIG. 3, each of the lamps 11 "comprises an anode 13, which has essentially the same diameter over its entire length. The cathode 14 is at its free end with a thickening 14a, through which the gas discharge is supported. Although the enclosure is preferably with Xenon filled, but another ionizable gas can be used. Each of the flash lamps 11 'has a circuit for applying a voltage to the anode and the cathode; in Fig. 3 there is only one for the sake of simplicity Circuit shown. This circuit is generally similar to that of Figure 1 and when the lamp is in the idle state is located, a voltage of 400 V is applied to terminals 16, so that the capacitor C is also at a voltage voa is about 400 V. The moment any Eoll lamp to be turned on, becomes the source for the

009836/1942

Voltage of 400 V short-circuited in that a silicon-controlled rectifier connected in series with the lamp 11 ' is triggered to make it conductive; the operation of this rectifier is shown below of Fig. 8 explained in more detail. If the rectifier is triggered, the capacitor C discharges its voltage via the associated one Rectifier and the gas discharge lamp connected to it. Simultaneously with this, a trigger pulse becomes 25 »its waveform is shown in Fig. 3, the trigger electrode 27 of a silicon-controlled rectifier 26 supplied, the anode 28 and cathode 29 between a source for a DC voltage from 100 to 200 V and a ground line 30 are connected. The trigger pulse represented by waveform 25 turns on silicon controlled rectifier 26 and causes the stored in capacitor C1 Energy is discharged, whereby a pulse is generated in the primary winding 32 of a transformer 31, which leads to a Voltage pulse of larger amplitude stepped up is, since the secondary winding 33 has a larger number of turns than the primary winding 32, so that a high voltage pulse is applied simultaneously to the trigger electrodes 20 of all lamps of the arrangement. 3 shows the trigger electrode 20 in the form of a "half-loop" made of thin »B aht, yes it should be noted that this is only for the purpose of simplifying the illustration and that each trigger electrode is actually the one shown in FIG to 2c has the shape shown.

Fig. 4 shows an imaging drum assembly 40 with a lamp assembly of the type shown in Figs. 2 to 2c In a preferred embodiment, the drum 41 is made of a transparent material so that it is essentially light can fall unhindered through the drum wall. A negative film 42 is wrapped around the outer surface of the drum 41. This film negative is essentially complete, but with the exception of clear characters, black, i. opaque. For the sake of simplicity, the film negative in Fig. 4 is shown in white with black characters

0.0 9836/1942

shown, but it should be noted that the negative is actually is black, while the characters are transparent or white. The characters are arranged in the form of lines in Mg. 4 e.g. represented by lines 4J to 48. In Fig. 4 only a few such lines are shown in order to make the drawing clearer, but it should be noted that some Lines are distributed over the entire circumference of the drum 41 at equally large circumferential distances. Each line contains a larger one Number of characters of the same type, and according to FIG. 4, lines 43 to 48 each contain the characters of the same type 8, 9 »A, B, C, D and E. It should also be noted that the characters are distributed over the entire length of the drum within each line, and that each line contains 100 or more characters can. In a preferred embodiment, each line can contain 120 characters of the same type.

It makes sense to combine the transparent drum and the film negative with a single drum-shaped component to manufacture opaque material, by machining or otherwise with numerous Openings is provided, which angeorc in the form of uniform cells net, where each opening is the shape of a specific letter, a number or other character. It is true that the drum according to FIG. 4 is provided with alphanumeric information or characters, but it should be noted that other characters, e.g. punctuation marks, algebraic characters such as Plus and minus signs or characters of any other language could be used on the drum.

Figures 6a and 6b show two embodiments of devices for rotating the drum assembly 40 in Figure 6a the drum is provided with two cylindrical disks 44 and 45 attached at its ends. Each of these disks has a collar part 46, by means of which it is freely rotatably mounted on an axis 48; the axle 48 is fixed at its ends with two ^ -aagtilcken 49 and 49a connected to one Base plate 50 are attached. At the horizontal base

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Plate 50, a synchronous motor 51 is attached to a shaft 52. A belt pulley 53 'sits on the shaft of the synchronous motor and a second belt pulley 5' is on the Drum axis 48 arranged. A belt 55 running over the pulleys 53 and 54 serves to control the rotational movement of the To transmit motor shaft 52 to the pulley 54, the is attached to the face plate 45 of the drum 41, so that the drum can be driven. In a preferred embodiment, the synchronous motor is operated ^ that the drum rotates at a speed of 1200 rpm. However, the actual speed of the drum may vary To be adjusted according to requirements

Pig. 6b shows a somewhat modified arrangement for driving the drum 41, in which the drum is included on its circumference an annular groove 56 for receiving a drive belt 55 is provided which engages groove 56 and with the pulley 53 of the synchronous motor 51 cooperates to turn the drum into To offset rotation; with this arrangement it is thus not necessary to use a pulley 54 of the type shown in FIG. 6a Type to be provided.

A lamp arrangement according to Pig. 2 is according to FIG. 4 in Arranged in a stationary manner inside the drum 41. The conductive rod 20 is between two elongated flat members 60 and 61 arranged and attached to them so that the semicircular grooves of the rod in Fig. 4 directed vertically downward are. According to FIG. 6a, the ends are fixedly connected to the support pieces 49 and 49a and are therefore not rotatable Drum axis 48 is rigidly connected to a with her and they are provided with a bundtoil that surrounds them. This collar part carries two downwardly protruding flanges 63 »which either with the The collar part are rigidly connected by any fastening means or form components of the collar part. A long one component 65, the upper portion of which is between the puddles 63 and 64 is rigidly connected to these flanges by fasteners. There are also two plates 67 and 68

009836/1942

provided, the upper band sections of which are connected by fastening means 69 «with the component 65, and the lower sections of which are connected to 70 tusaatienarbeiten, through which, as shown in FIG. 4, two plates 60 and 61 are held in their parallel position and at a distance from one another. "

FSg. 5a to 54 »own different views of plates 60 and 61, and Tig. 5a to 5c "own *, B" biw in a side view. a front view or * in the plan the Plate 60, which in general has essentially the same fora as the Plate 61} apart from Flg. 5b and 5d, where also the plate ■ indicated by dash-dotted lines is the * plate 61 omitted for the sake of clarity. The following description of the plate 60 thus also applies in all respects for plate 61.

The plate 60 has an elongated, substantially rectangular shape, it is elongated with a narrow one Opening 72 is provided, and near its four corners it has several small openings 73 which, as shown in FIG. 4, receive fastening means 70. A flat side of the plate 60 is machined and otherwise provided with numerous narrow elongated grooves that extend all over the Extend width of the plate and are distributed almost over the entire length of the plate at even intervals. The Nu * th 74 have an extremely narrow width and depth, i.e. their depth is on the order of 0.35 to 0.40 mm, while their depth is on the order of 0.25 to 0.50 mm, and they are distributed at intervals of the order of 2.5 µm.

When the plates 60 and 61 in the Fig. 4 and 5d apparent way are arranged parallel to one another and by spacers, one of which can be seen in FIG is, are kept at a «distance from each other, are the elongated grooves arranged exactly opposite one another. According to Fig. 5d are in the mutually associated grooves of

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Plates 60 and 61 elongated · thin strips 75 * a atarren and pr arranged _a ktiech opaque material, the τοη the lower edge · 76 of the plates according to Fig. 5 * and 5b extend u · upward to below an imaginary line 7-7.

They are one of its lamps 11 as shown in Figures 5a and 5b the longitudinal slots 72 of the two plates so arranged that their anodes 13 and their cathodes 14 protrude from the outer surfaces of the plates 61 and 60 to the outside. The elongated rod 20 is above the lamps in Fig. 5a and 5b arranged so that their semicircular reflective surfaces the different lamps respectively enclose their top and extend down to a point at which, according to FIG. 2, the narrow rectangular surfaces 21a between adjacent! 21 essentially on the imaginary line 77 in FIG. 5a lie. The top edges of the thin elongated strips contact surfaces 21a so that each of the various lamps is substantially completely enclosed, and that the light generated by each lamp according to FIG. 5d only in the associated channels 78 can fall, each through the facing surfaces of the plates 60 and 61 and the facing surfaces 79 of adjacent elongated Strip 75 is demarcated.

According to FIG. 4, the plates 67 and 68 have openings and guides (not shown) for receiving the anodes and cathodes of the discharge lamps are provided so that the lamps can be connected to lines, which are not shown for the sake of clarity, in order to connect them to circuits of the in Fig. 3, which are arranged as printed circuits on boards 80 shown in Fig. 4} the plates 80 carry the associated circuit elements such as resistors, capacitors, transistors for each lamp, silicon controlled rectifiers and the like; these individual circuits are each shown as a whole in FIG designated. The connections extend from the lamps

009836/1942

gen to the circuits provided on the plates 80 not shown openings of the rods or guide parts 67 and 68 ..

7 shows, in the form of a block diagram, a device for printing out messages, in the case of the device according to the invention Image drum and the lamp assembly described is made use of; this facility comprises several Input terminals 86-i to 86-n, which are connected to data switching electronics 90, have their input terminals from receive incoming messages from various separate sources. In a preferred embodiment, up to 32 individual input terminals can be provided. The transmission (polling) of the incoming messages is carried out by the data transmission electronics 90 with the help of lines (voice grade lines), each of which transmits up to 4800 bits / sec can. This forwarding is effected by circuits 87-1 to 87-n, through which the incoming data are queried will. When a message is to be transmitted, the circuits 87-1 to 87-n come into action to check the incoming Enter messages one after the other in buffer registers 88-1 to 88-n. These buffer or shift registers can have 11 levels so that they can pick up signals that are each encrypted using one of several different codes. As soon as a character has been entered into a shift register, the signals in question become parallel to a second one Register entered, which is one of several registers 89-1 through 89-n, each of which is input line one is assigned. Each of the second buffer registers 89-1 to 89-n can be selectively provided with a transcoding circuit 91, which in a preferred embodiment is a core matrix in connection with logic circuits 'may include, and which recoded those encrypted signals that are not encrypted according to the ASCII code. The recoding circuit is designed to have a Recoding can generally cause any point in time in two separate lines. Since all recoding

0 0 9 8 3 6/1942

circuits with regard to their structure and mode of operation are essentially the same, only one of these circuits will be described below. A logic circuit 92-1 compares the code of the signals stored in register 89-1 with the ASCII code considered here as a standard, the is stored in a kernel group 93-1 "Whenever a lack of match is found, the logic circuit 92-1 at its output terminal 92-1a an output signal appear which actuates a counting circuit 94-1 and causes the rightmost bit of the norm character to be matched by a line 93-1a to the white-P test left bit position is entered, while the remaining bits are shifted one bit position to the right will. The counting process of the counting circuit 94-1 is continued, until logic circuit 92-1 finds a match and causes count circuit 94-1 to do another To perform counting step. As soon as this has been done, the counting circuit 94-1 contains an encrypted according to the ASCII code Message which corresponds to the differently encrypted message to be recoded which is stored in register 89-1.

Each polled input line is identified by circuit 87-1 with respect to the code it transmits; this can be, for example, a binary encrypted ™ rarely deal with a decimal code, a dot code, a telex code and the like.

When signals are applied to circuits 87-1 through 87-n indicating that one is encrypted according to the ASCII code Message is received, any signal appearing on any of the input lines 87-1a "through 87-na becomes one logic gate circuit 92-1 or 92-2 supplied. An immediate transfer can then be made via the output terminals 92-1a or 92-2a to a storage device 96.

The storage device 95 'which is a Memory of any known type can act, is so

009836/1942

so that it can store a large number of messages before printing. In the case of a preventive execution forum For example, the storage device 95 can be designed as a disk storage device, which in FIG. 7 for the sake of simplicity is a single plate 96 is shown, each track several lies ·· and recording heads 9? · * 1 to 97-4 are assigned. It should be noted that in practice a larger number of Read and input heads and their associated tracks can provide, and that in Fig. 7 for the sake of simplicity only one small number of heads and tracks is shown.

Each of the lanes, e.g. lane 93-3 »is in quadrants 98-Ja to 98-3d, and the shortest message is assigned to at least one quadrant of a memory track, even if it does not occupy the entire quadrant. Of course, messages of greater length can also take up several quadrants and even several lanes. In the In the preferred embodiment, the buffer storage means used are designed in such a way that they contain information in the scope of up to 23 pages, with one page corresponding to the number of characters that can be typed on a normal sheet of 215 x 2 mm. The reason for choosing one like that large storage capacity is that the entire message is first received by the buffer memory before that printing is initiated. Submitted messages usually include the end of the message at the end indicating signal which indicates to the buffer memory 95 that the printing process will be initiated after its arrival can. The encrypted messages contained in the memory are preferably output in such a way that they are not deleted so that a large number of Make copies without the need to use a reproduction process and * .B. a copier use su.

009836/1942

The logic circuit of the core memory and the logic gate arrangement 91 can serve for the incoming Allocate messages to certain tracks of the disk storage. As is common with disk storage, each track can store a total number of binary bits as large as that Number of bits storable by the adjacent tracks. For this purpose, the input and output takes place in the case of traces of smaller circumferential length using a higher frequency, while the larger circumferential ones Tracks with a lower frequency is worked.

In the preferred embodiment, the disk storage may comprise disks, each of which has 10 or more tracks has, wherein the plates rotate at 3400 rpm, and wherein each plate in each track four step sides or in each Quadrants can store a page of writing, with each page containing the number of characters specified above.

Although it was mentioned above that the buffer memory 95 is a disk memory, it does it should be noted that rotatable magnetic drums could just as easily be provided. As is known, magnetic drums are available in which information can be stored on 10 or more tracks, and those with a speed of 3400 rpm can be operated. With a suitable choice of the Magnettrommelη it is possible to have a storage capacity of to achieve four pages of writing per track.

As soon as the last message has been completely stored in the buffer storage means 95, bit printing can be started. The logic circuit of the computer part of the core memory and the logic gate circuit 91 can serve to print out a complete stored message su and actuate the logisohe print circuit and the lamp actuation circuits su, which, as mentioned, be arranged in the image drum 40. This actuation of the logical pressure maintenance and the

009836/1942

Lamp actuation circuits then cause the lamps of the described arrangement can be selectively turned on to send a message in a manner to be explained in the ordinary way or sensitized paper.

Fig. 8 shows the logic circuit for printing out ' Messages and to operate the lamps} this circuit is in Pig. 8 designated as a whole with 95a. When operating the facility causes the part designated by 91 in FIG. 7 the logic control circuit that part of the output Message is input to a specific portion of the core memory 96, also shown in FIG. 8, which is can act a matrix part of the core memory, the 9 horizontal Includes rows and 512 vertical rings of kernels, so that it can store a total of 4608 bits; some of these bits represent the message, while the remaining bits represent the addresses of each of the characters included in the Address register part 96-1 or the output register part 96-2 of the core memory have been entered «

As described with reference to Fig. 6a, the rotatable image drum 41 with synchronization means in the form of a Disc 97 provided, which has not shown narrow slits, so that the light of a light source 98 during ^ each Rotation of the imaging drum one or more times on a photosensitive Photocell 99 can fall, which, according to FIG. 8, is also replaced by a photosensitive semiconductor device 99 can be and causes a pulse to appear in a line 100, which serves to reset a binary counting circuit 101 and at the same time to reset the address register 96-1, to cause the next group of characters to be printed to be the one assigned to it Part of the core memory is entered.

The address position of the first character in the core memory causes that character to appear in the output register 95-2 is contained in a downstream shift register 102 is convicted. Each of the bit positions of the

009836/1942

keyed characters in the shift register 102 is connected to a plurality of logical AND gates, through one of output lines 102-1 through 102-8, i.e. with gates 10J-1 and 103-J. In addition, the output lines 101-1 lead to 101-8 of the binary counting circuit 101 to inputs of the gates 103-1 and 103-2 to 110-1 or 110-2 of a logical binary Comparison circuit 111. Since all the gate groups of the binary comparison circuit 111 are of the same type, in the following n # described for one of these groups. Any of these gates is a negative AND gate, in which when a binary 1 is fed to all inputs of a gate, the output signal is a binary 0 and the output is a binary 1 if not all inputs or none a binary 1 is supplied to the inputs. Assume that each of lines 101-1 and 102-1 is a binary 0 is fed. These input signals cause the gate 103-11, to make a binary 1 appear at its output, which is fed to inputs of gates 103-2 and 103-3 at the same time will. The binary signal 0 appearing on input lines 101-1 and 102-1 also becomes inputs to the gates 103-2 and 103-3. Binary 0 signals are fed to these two gates via their inputs, so that their A binary 1 appears on the outputs and these signals are combined in an output bus 112.

According to FIG. 8, the gate groups 105-1 to 105-3 and 106-1 to 106-3 are on their output side with a second common bus 113, the gate groups 107-1 to 107-3 and 108-1 to 108-3 are connected to a common Bus 114- connected, and the gate groups 109-1 to 109-3 and 110-1 to 110-3 are connected to a common line 115 connected. These busses form input lines for a gate 116. This binary comparator works so that if any of the getters are one of the bus bars supplies a binary 0, this signal is retained in the relevant bus, although any other gates connected to the same bus

009836/1942

are set to binary signal 1. When missing a match becomes at least one binary 0 fed as an output signal to at least one of the bus lines, so that at least one binary O to an input of the Gate 116 arrives and at the output 116a of this gate one binary 1 appears. This binary signal is inverted by an inverting circuit 117, at its output 117a a binary O appears, creating a group of gates 118-1 until 118-n is blocked.

If there is a match between all the bits in the Counting circuit 101 and all bits in the register 102, they leave the buses 112-115 appearing output signals binary 1 signals to the inputs of the gate

116 arrive, so that a binary appears at the output of this gate. This state is determined by the inverting gate

117 reversed and processed to a binary 1, which goes from the output of gate 117 to gates 118-1 to 118-n, to operate these gates in a manner yet to be explained

As mentioned, the photosensitive device is activated one or more times during each rotation of the image drum is turned on to indicate that the next line of characters on the imaging drum 41 is the aforesaid is "predetermined line". The logic circuit according to 8 now has the task (only those lamps for the "predetermined line" will be illuminated by the letters of the "predetermined line" appearing in Encrypted form are contained in the shift register 102. This work step is done with the help of a counting circuit for binary encrypted decimal signals and a decoding circuit 120, each working at a high speed to gradually move to all end positions to go through the various lamps 11-1 to 11-n are assigned to the lamp assembly. The incrementing of the counting circuit 119 and the decoding circuit 120 can through

009836/1942

an oscillator 121 can be controlled, which is in an output line 122 impulses appear which are synchronized with the rotation of the image drum 41 and via the line 122 the step switching input of the circuit 119 for counting the one of the binary encrypted decimal signals and for decoding these signals are supplied. The procedure to reset of circuits 119 and 120 is explained in more detail below. To understand how the circuits work 119 and 120, assume that a reset pulse is fed to their reset inputs 119a and 120a via an output line 123 which is connected to the output of a Reset gate is connected, which operates in a manner to be explained. It is also assumed that the first step switching pulse of the oscillator 121 of the single-counting circuit 119, which has just been deleted, so that a binary 0 appears at all of its output stages. When the first pulse arrives, a binary 1 appears on output line 119-1 and this signal becomes a gate 118-1, while the remaining output lines 119-2 to 119-10 in a binary O corresponding State remain. The next step pulse from oscillator 121 causes it to be on the output line 119-1 a binary 0 and a binary 1 appears in the output line 119-2, while the remaining output lines 119-3 to 119-10 remain in their binary O state. These work steps are based on appropriate Continue until a binary 1 appears on output line 119-10. As soon as this happens, the a counting circuit 119 an output pulse which appears on a line 124 and which has previously been reset to zero Ten counter circuit 120 causes it to appear on its output line 120-1 to cause a binary 1 to appear to indicate that the one-count circuit 119 has received at least 10 stepping pulses have been supplied. In the preferred embodiment 8 it is assumed that the lamp arrangement comprises a total of 80 lamps. In this case, the ten

009836/1942

counting circuit 120 only with nine outputs 120-1 to 120-9 to be provided.

Output lines 119-1 through 119-10 become selective with each group in the manner described below connected by 10 gates 118-1 to 118-n.

The line 119-1 is connected to an associated input terminal the gates 118-1, 118-11, 118-21, 118-31 etc. to 118-71 are connected to the output line 119-2 Gates 118-2, 118-12, 118-22, etc. through 118-72, and finally line 119-10 is connected to the associated input terminals the gates 118-10, 118-20 etc. connected to 118-80. The output lines are similar of the ten counter circuit 120 is connected to the gates 118 in the manner described below.

Line 120-1 is connected to the associated input terminals of gates 118-10 to 118-19, the line 120-2 is connected to the associated input terminals of gates 118-20 through 118-29 and so on, and finally is the Line 120-9 connected to the associated input terminals of gates 118-1 through 118-9. The ones at the outputs of the single counting circuit 119 and signals appearing to the ten counter circuit 120 are selectively applied to the inputs of the gates 118-1 to 118-n supplied in such a way that only one of these gates is actuated at any one time. Simultaneously this will make the comparison process between that in the counting circuit 101 contained encrypted characters and the character transferred from the memory to the register 102. The encrypted character in the counting circuit 101 represents the series of characters in the "initial series", e.g. the letter A.

Assume that the character inputted to register 102 by stepping is assumed is the first letter of a message to be printed.

009836/194

At this point in time, the binary counting circuit 101 contains the characters A encoded according to the ASCII code in the "initial row" of the image drum. A comparison is made by the binary Comparator 111 carried out simultaneously with the changeover of the unit counting circuit 119 and the tens counting circuit 120, whose output lines 119-1 and 120-9 are in the binary state 1. All other output lines of the single circuit and the ten circuit are in the binary state 0. As a result, only gate 118-1 activated. Assuming that there is a match, three binary ones appear at the inputs of gate 118-1 1 signals so that the output of this gate is a binary 0 is. This voltage level is sufficient to "convert" a silicon-controlled rectifier 125-1, which also then remains changed if it corresponds to a binary 0 Signal is no longer present at the output of gate 118-1 and until it is reset by a device not shown which can be connected to a line 127-1 to ground this line and thus the silicon-controlled Reset rectifier.

Shortly after the first comparison has been carried out, the output register 96-2 transfers the second character of the first line of characters to be printed into the register 102, with the next shift pulse being output from the oscillator 121 to the unit counting circuit 119 at the same time. This pulse causes line 119-1 to be set to a binary 0 and line 119-2 to a binary 1, while the remaining lines 119-3 to 119-10 remain at the voltage level corresponding to a binary 0. Thus, output lines 120-9 and 119-2 provide a binary 1 as input to gate 118-2. Assuming that the next character now contained in the shift register 102 is encrypted in the same way as the ^{second character contained in the "initial row 11} ", the binary comparator 111 also supplies a binary 1 to the god 118-2,

0098 3 f5 / 1942

so that the output of this gate switches the silicon controlled rectifier 125-2 which, as referred to in FIG of the rectifier 125-1 described, remains in this converted state. All other 78 memory positions will be similarly scanned until all 80 characters of the first print line with that stored in counter 101 Characters have been compared. As soon as the count of the units counter 119 and the tens counter 120 reaches the value 80, the state of output lines 120-8 and 119-10 corresponds to a binary 1, indicating that the entire Group of characters to be printed. Lines 120-8 and 119-10 are connected to the associated inputs of a gate |

130 connected, the output signal of which corresponds to a binary 0 and indicates that the eightieth count has been reached. This output signal becomes a delay circuit

131 supplied, which causes the deletion of the units counter 119 and the tens counter 120 and at the same time the address register 96-1 and the binary counter 101 causes a switching step to be carried out.

Immediately before the deletion process, the trigger pulse signal is activated fed to the conductive rod 20 shown only as a wire line in FIG. 8 for the sake of clarity, to trigger all lamps in the arrangement, the silicon-controlled ones Rectifiers have been changed over, precisely at the point in time in which the "initial row" or initial line passes under the honeycomb structure, through which the light from the lamps onto the inner surface of the image drum 41 is directed. The triggering of those lamps whose silicon-controlled Rectifiers 125. have been converted, causes a discharge by which the relevant lamps are short-circuited so that they are selected characters of the "start line" illuminate, the rectifiers 125 being reset at the same time. Immediately after feeding the Trigger pulse signal to the rod 20 is given by the Gate 130 generated binary signal 0 through the delay circuit 13I of the unit counting circuit 119 and the unit counting

009836/1942

circuit 120 is supplied to reset these circuits and increment the binary counting circuit 101 to accommodate the next character (B) contained in the next line adjacent to the "start line" is included. The steps described above are used for each Line repeated in a similar manner, Ms all lines of the image drum have been swept over.

Each of the ignited lamps generates a high intensity flash of light that passes through the associated guide channel the honeycomb structure and this forms a profiled beam, the cross-sectional shape of the shape of the relevant Character corresponds, and falls through the light guide channel of the lamp 11-1, so that either a sensitized Transfer drum or sensitized paper for a long enough time and with sufficient light intensity is exposed so that the character in question is visible after developing the sensitized material.

10 and 11 each show, in a side view, two different embodiments of devices for Perform the final printing. In the device according to FIG. 10, the lamps selected are here for the sake of clarity for the sake of the lamp arrangement not shown in detail with the aid of the logical arrangement described with reference to FIG Printer actuation circuits switched on, so that flashes of light of high intensity in the direction of arrow 150 to be guided below by selected characters of the relevant line, which are just below the lamp arrangement and the the honeycomb structure guiding the light moves through it. The light rays fall through the transparent parts of the imaging drum and are retained by the opaque parts of the drum, so that the light rays respectively Preserved the cross-sectional shape of the characters they have just passed. Then each ray of light hits the top of one Paper web 151ι which is sucked off by a supply roll 152

009836/1942

and passes between two transport rollers 153 and 154. Then the paper passes under the paper web 151 arranged "device 155 for marking an interface; this device is designed so that it the underside provides the paper web with a mark every time a piece of the Paper web has passed the device. In a typical arrangement, the interface marking device may be the underside the paper web with a marking at intervals of e.g. 280 mm.

Beyond the marking device, the paper web 151 runs through a feed device 156 for application a photosensitive material onto the paper. This photosensitive material is printed at a printing station P exposed and then developed by means of a developing device 157 which is beyond in the direction of movement of the paper the image drum 4-0 and the lamp assembly 20 is provided. After developing the image is made with the help of a Fixing device 159 fixed. Further transport rollers 159 and 160 move the paper web 151 further in the direction of arrow 161. A cut mark detector 162, e.g. photosensitive device is formed, causes a cutter 163 at a predetermined time is operated after the cutting mark has passed the detector.

Fig. 11, where parts shown in Fig. 10 each with the The same reference numerals are denoted shows an arrangement in which a Βε & η made of ordinary paper from a supply roll 152 is withdrawn and passes between transport rollers 153 and 154. A cutting part marking device 155 prints an identification mark Mt on the underside of the paper web in the manner described above. The embodiment of Figure 11 further includes a transfer drum assembly 164 interposed between the imaging drum and the elongated paper web I5I is arranged.

00983 6/1942

The transfer drum is provided with a photosensitive coating that extends below the clockwise direction rotating image drum 40 moves as the transfer drum is rotated counterclockwise. Light from high Intensity generated by selected discharge lamps of lamp assembly 20 falls in the direction of arrow 150 down through the honeycomb structure to activate the photosensitive coating on the transfer drum 164. The activated portions of the coating pass through a developing device 165 »through which the coating is developed. The photosensitive coating is then on top of the Paper web 151 transferred. A freely rotatable support roller 166 applies the necessary pressure between the transfer drum 164 and the paper web 151, so that the developed coating is connected to the top of the paper web. Moved after the developed coating was transferred the part of the transfer drum that has just been lifted off the paper web attaches itself to corona discharge devices (corotron essemblies) 167 and 168 passing through which the photosensitive coating on the peripheral surface of the drum 164 is reactivated so that he can take the pictures of the next group of 2 ichen. Now it repeats itself the work cycle described.

The images are not transferred to the paper web 151 have been, the paper web moves under a fixing device 158 through and then by further transport rollers 159 and 160 to be detected} then passes the paper web a cutting mark detector 162 for controlling a cutting device 163, by means of which the contiguous Paper web I51 in the hand of If'ig. 10 described way divided into sheets the size of a printed page.

Fig. 9 shows another embodiment of a lamp and image drum assembly which can be used to display characters to represent optically.

009836/1942

With regard to the field of work of displaying characters, it should be mentioned that various character display devices are already known in which, in most cases, a matrix, point or bar arrangement is used which is generated with the aid of an electron beam on a surface sensitive to it. In these known display devices, a cathode ray tube is mostly used, which is controlled by a character generating circuit and allows the desired image to appear on the screen of the cathode ray tube. The optical quality of the reproduction of characters in these devices is poor, since the characters % are composed of a dot or line matrix. Apart from the poor quality of the display, it is very difficult and expensive to change the arrangement of the displayed oaks.

The method used according to the invention is simple, it is low cost and the quality of the reproduction approaches the quality of printed characters, which in other cases can only be produced with the help of expensive special equipment.

By simply changing the mask provided, for example, for the image drum according to Fig. 4, it is possible to to display alphanumeric information or other characters as required * in any desired language. In the an expensive character generator is not required. The spectral radiation of the display The light used is white, and the light does not tire the eyes of the observer. The board on which the characters appear can be viewed from the board by several people in a comfortable distance. ■

The applicability of film technology is based on the fact that the human brain can no longer recognize an image change if more than 20 images are presented every second Will. According to the invention a device is used,

009836 / 19AZ

which includes a clear imaging drum 40 and a film negative 41 containing alphanumeric information and such is wrapped around the drum, as described above with reference to FIG. 4 ". Although this film negative has one opaque background, and it has transparent characters, but the characters in Fig. 9 are for simplicity half represented as black characters on a white background.

A source of synchronization signals is provided on the drum, which allows the location of each character as well the point in time is determined at which a desired character appears behind the display area, in order to ensure that the correct character is displayed in each case, the synchronization signal according to the invention is used to trigger the trigger electrodes to operate the lamp assembly at the right time.

When the desired character is in the correct position, the associated flash lamp is shown in FIG. 8 described manner ignited with the help of the logic circuit and the associated actuation circuit. That illuminated The image of the character is arranged in the immediate vicinity of a focusing screen 170 so that it is visible to a viewer. The image drum rotates at a speed of 1200 rpm. The information to be displayed runs according to FIG. 8 in the Memory shift registers 102 and cause the lamps to ignite at exactly the right time during each revolution will. The information is presented repeatedly at each revolution until new information is supplied to the logic circuit and the drive circuit so that different information is provided Information is presented.

You can also go through the disk I70 according to FIG. 9 replace a transparent plate, which is provided with a memory, which consists of a phosphor, which is in Form of a coating on the one facing the lamp assembly

009836/1942

-59.-

Surface of the plate is applied. A device 171 can be provided in order to mechanically move the plate 170, which is mechanically coupled to this device in the manner indicated by a dashed line 172, so that several lines of characters can be displayed. The luminosity of the phosphor layer can be sufficient to display a large number of lines, the first line of characters still being visible after the last line has been projected onto the phosphor layer. As a further alternative it is natural to arrange provided with the phosphor coating plate fixedly and to provide an elec- \ tronic device 173 through which deletes the character displayed line by means ™ of the phosphor, when the control logic circuit outputs a signal dasanzeigt that a new set of characters is to be represented. For every person skilled in the art, further modification possibilities arise which, however, also fall within the scope of the invention. For example, in the arrangement according to FIG. 9, the ground glass can be replaced by an endless loop which runs over four rollers, so that the translucent material is moved along the sides of a pike. A surface of the tape is arranged in the immediate vicinity of the imaging drum where the light falls through the lines of a certain line. The inner surface of the endless andes is coated with a phosphor acting as a memory. A device can be coupled to one of the four rollers, by means of which the endless belt is moved step-by-step according to the height of a line after a line of characters has been projected onto the phosphor.

Patent claims:

009836/1942

Claims (22)

- Λ- P A T E H T A I S P E Ü C E E 1. Lamp arrangement to illuminate preselected zones of an area to be illuminated or exposed with several lamps, each of which comprises an enclosure containing an ionizable gas with two electrodes inside each Lamp protrude and are provided with leads for connecting each lamp to an external drive circuit, and wherein the lamps are arranged parallel to one another at equal distances from one another along an imaginary straight line are characterized by an elongated B uteil (20) made of a conductive «« material that along one side of the lamp assembly in close proximity of all lamps (11; 11 ') is arranged, the lamps facing surface of the component is reflective, so that it reflects light rays impinging on it, and wherein the conductive light part is suitable for triggering the ignition of those preselected lamps of the arrangement whose switching on Circuits have been brought into effect. 2. Lamp assembly according to claim 1, characterized in that the reflective surface of the elongated Lauteils (20) comprises several circular arc-shaped curved sections (21), each of which has an enclosure (12) an associated lamp (11) can receive and hold in their position, so that the light rays emitted by each lamp be concentrated on associated separate zones of the area to be illuminated. 3. Lamp arrangement for illuminating separate zones of a to be exposed i? laugh, marked by a long, hollow enclosure (150) made of a licit-permeable Viferkstoff, which is hermetically sealed and 009836/1942
■ "■■ BATH ORIGINAL contains an ionizable gas, a plurality of partition walls (151 ') made of an insulating material, arranged parallel to one another in the enclosure and evenly spaced over the length of the enclosure, each two adjacent partition walls delimiting a separate lamp chamber, with an anode ( 152) and a cathode (153) extending into the interior of the enclosure, each anode or cathode being provided with a lead protruding from the enclosure for connecting the anodes and cathodes to external drive circuits, as well as by an elongated component (15 ⁷ O made of a conductive material with a circular arc-shaped curved cross-section, which is provided on its concave surface with a highly reflective surface, the concave surface of this component being arranged in the immediate vicinity of the outer surface of the enclosure to allow the light emitted by each lamp chamber to exposing surface z u focus. 4. Lamp arrangement according to claim 3 _}, characterized in that the elongated B uteil (154) is provided with a lead so that it can be connected to an external circuit for triggering the discharge of the lamps (11, 11 "). 5 · Lighting device with a lamp arrangement and a drive circuit by means of which the lamps of the arrangement can be selectively actuated, the lamp arrangement comprises a plurality of lamps, each of which has an enclosure and is provided with an anode and a cathode which protrude into the enclosure, and wherein the lamps are arranged parallel to one another and at a distance from one another are, characterized in that the lighting device an elongated rod (20) from a comprises conductive material which along one side of the lamp arrangement in the immediate vicinity of a lamp (11; 11 ·) is arranged that the surface facing the lamps (21) of the rod has a high reflectivity, and that the 0098 36/1942 BATH Drive circuit comprises several drive circuits, each of which with the inode (13) and the cathode (14) an associated The lamp has associated output terminals, each drive circuit including input terminals (16), further including all of them DC voltage source commonly assigned to input terminals, several storage means, each of which is between the output terminals an associated drive circuit is connected, and a trigger circuit (31) with a second Voltage source and switching means (125) connected between the second voltage source and the conductive rod and comprise a control electrode, the switching means being suitable, the second voltage source only then to be connected to the conductive rod when a trigger signal is applied to the control electrode. 6. Lighting device according to claim 5 »thereby characterized in that the device has several second switching means (26), each of which comprises a first electrode (28), a second electrode (29) and a control electrode (27) has that the first and the second electrode of the second switching means between their associated bpeiehermitbein (C) and the lamps (11) connected and are normally non-conductive, that option dialing means are provided are, by means of which the various second Schaltmifctel can be made selectively conductive, and which have a plurality of output terminals, each with an associated Control electrode of the second switching means is connected, that the lamp selection means comprise switching means, means whose briefly a pulse can be fed to those control electrodes to which lamps are assigned that are selective are to be ignited, and that each of the second switching means is designed so that it remains in the conductive state, after the momentary impulses have been eliminated, and only then that they are in their non-conductive state return when the lamp assigned to them has discharged. 009836/1942 7 · Image drum assembly for use "with Zoichendar- · setting devices, printers or the like a hollow cylindrical drum that can be rotated about its slow shaft, a motor for rotating the drum with a substantially constant speed, being on the peripheral surface of the drum several rows of spaced-apart characters "are provided, each row containing several similar characters, all signs being permeable to light, while the remainder Part of the peripheral surface of the drum is opaque is, furthermore, a lever arrangement provided in a stationary manner in the drum with a plurality of lamps, each of which includes an enclosure containing an ionizable gas, and two Electrodes projecting into the interior of each lamp with leads for connecting each lamp to an external drive circuit, characterized in that the Lamps (11; 11 ") are arranged along an imaginary straight line parallel to one another at regular intervals from one another are that an elongated rod (20) made of a conductive material along one side of the lamps in the immediate Near the lamps is arranged that the Lsmpen facing Surface of the rod has a high reflectivity so that light rays striking it are reflected back that the conductive rod is suitable for triggering the ignition of those preselected lamps of the arrangement which are to be switched on Circuits have been put into action, and that between the lamp assembly and the inner surface of the drum (4-1) light guide means (75) are arranged to the of each lamp emitted light and one at a time the. To convey character positions within a row of characters passing through the light guide means. 8, image drum assembly according to claim 7 »g e k e η η ζ e i c h η et by electronic circuits for actuation the lamp arrangement arranged inside the image drum, these circuits comprising several drive circuits, of each of which has output terminals connected to the anode (13) or the Ktthode (14) of an associated lamp (11; 11 ') 009836/19 42 BAD ORIGINAI. are connected, wherein each drive circuit comprises Eingangskiemmen, further comprising a commonly connected to all input terminals of the DC voltage source, a plurality of storage means, each of which is ^m ^ the output terminals of an associated drive circuit is connected to a trigger circuit (31) having a second voltage source (C) and between the second Voltage source and switching means (26) connected to the conductive rod (20) with a control terminal (27) which are suitable for connecting the second voltage source to the conductive rod only when a trigger signal is supplied to the control terminal. 9. Image drum assembly according to .Anspruch 8, characterized by several switching means (26), each of which has a first electrode (28), a second electrode (29) and a control electrode (27), the first and second electrodes of the second switching means each being between an associated storage means and an associated lamp (11; 11 ') and normally non-conductive are, Lajnpenwählmittel, by means of which the second switching means can be made selectively conductive, and which comprise a plurality of output terminals, one of which each with an associated Control electrode is connected, wherein the lamp selection means comprise devices by means of which briefly a Pulse can be fed to those control electrodes whose associated lamps have been selected to this ignite, and wherein each of the second switching means remains in the conductive state after it has passed through the brief Impulse has been actuated, and every second switching means only then returns to the non-conductive state, when the associated lamp has discharged. 10. Imaging drum assembly for use in character display devices; Printers or the like with a hollow cylindrical drum rotatable about its longitudinal axis, Motor means for rotating the drum at a substantially constant speed, on the peripheral surface of the drum 009836/1 9 A 2 several rows of characters are distributed at circumferential intervals, each of these rows containing several similar characters, with all characters being translucent while the remaining part of the drum surface is opaque, as well as with a lamp arrangement fixedly arranged inside the drum, thereby geke η η draw t, that the lamp assembly has an elongated hollow enclosure (150) made of a translucent material, that the enclosure is hermetically sealed and containing an ionizable gas, that a plurality of partition walls arranged in parallel and at equal intervals (151) i ^m the interior of the enclosure, the Length of the enclosure are distributed so that the partition walls are made of an insulating material, that every two adjacent partition walls delimit a separate lamp chamber, that an anode (152) and a cathode (153) are assigned to each lamp chamber, which go into the interior of the enclosure protrude that each anoüe and cathode with e Iner from the enclosure protruding supply line for connection to external drive circuits is provided that an elongated component (154) is provided with a circular arc-shaped curved cross section, that this component has a highly reflective surface on its concave side, and that the concave surface of the component in is arranged in the immediate vicinity of the outer surface of the enclosure in order to concentrate the light emerging from each of the -ijampenkammern on the surface to be exposed. 11. Image drum assembly according to claim 9 »characterized in that first switching means (90) provided with several output terminals for receiving messages are arriving from multiple distant sources, that the first circuit means comprise buffer storage means through which the incoming characters of the received messages are temporarily stored, as well as circuit means for determining the code in which the received messages are encrypted are circuit means that respond to signals of the 009836/1942 Circuit means for detecting the code address to convert the code of received messages into a predetermined code if the messages concerned are not already encrypted according to the predetermined code, storage means which store the received messages only if they are encrypted according to the predetermined code , Detector means responsive to the end of a message, and lamp switching means comprising circuit means responsive to signals from the detector means to selectively switch on the lamps (11; 11 '), and selected character positions in selected character rows (43 to 48) of the image drum (41) W) to illuminate. 12. Image drum assembly according to claim 11, characterized in that a roller (152) is provided, which consists of a wound long paper web (151), that transport means (I53j 15 ^) are provided to pull the paper web from the iiolle and put it on of the image drum (4-0) in its immediate vicinity, and that the paper web has a light-sensitive coating so that selected drawing images within zones are produced on the paper . can earth, which are illuminated by the lamps (11; 11 ') when the paper web on the image drum * moved past. 13. Image drum assembly according to claim 12, characterized in that a cutting line marking s device (155) between the image drum (40) and the Holle (152) is arranged and provides the paper web with spaced-apart markings, while the paper web is withdrawn from the Holle, and that beyond the image drum, a cutting device (163) is arranged, the one Device (162) for peeling the cutting line markings and serves to the elongated paper web (15Ό to cut through each time the iüiilvorrichtung the Presence of a cutting line mark f disfigured. 009836/1942 -y-.fi: 14. Image drum assembly according to claim 12, geke η η ζ ei c ' ^: hn et by near the Pcipierbahn (151) on the other side of the image drum (40) arranged developing means (157) for developing the photosensitive coating after its exposure by the lamp arrangement. 15. Picture drum assembly according to claim 11, marked e i chne t through a boll (152) that is wound from a elongated paper web (151), a rotatable transfer drum (164), 'which carries a photosensitive coating on its peripheral surface and is so arranged is that its peripheral surface is the peripheral surface of the image drum (40) is immediately adjacent so that parts of the coating can be exposed, means of transport (153, 154, 159 »160), through which the paper web is pulled off the roll and guided past the transfer drum in its immediate vicinity is, and roller means (166) which the paper web against the Press the transfer drum so that images of ^ calibrations of the transfer drum to »be transferred to the paper web. 16. Image drum assembly according to claim 15, characterized by one between the image drum (40) and cutting line marking apparatus disposed in the hollow (152) (155) »by means of which the paper web (151) with in Spaced marks is provided as it is being peeled off the roll and one beyond the imaging drum arranged cutting device (163) with a device (162) to feel the cutting line markings, where the cutting device cuts through the elongate paper web each time the sensing device detects the presence a cutting line marking: determines. 17. Image drum assembly according to claim 15, marked e i c h η e t by developing means (165) arranged near the transfer drum (164) for developing the photosensitive coating after its exposure through the lamp assembly. 009836/1942 2UU8323 18. A rapid drying assembly according to claim 7, characterized by one arranged near the image drum (49) Kattscheibe (170) made of glass, which extends substantially parallel to the longitudinal axis of the image drum and from the Light is hit that falls through selected transparent characters on the imaging drum. 19 · Image drum assembly according to claim 7 »characterized by a near the image drum (40) in the arranged essentially parallel to the longitudinal axis of the 'Irommel Beuteil (170) is a transparent sheet material, aas on one roof side with a phosphor acting as a memory that is covered "by the light that is through selected transparent oaks on the imaging drum falls. 20. Image drum assembly according to claim 19, characterized by a device (171) through which the Flat piece of material (170) is moved further by one step after the phosphor acting as a memory a Z. ile of ^ gauges has made visible, so that several lines can be represented by characters. 21. Image drum assembly according to claim 9, characterized in that the Leunpenwählmittel include storage means for enriching at least one line of ^ calibration, further a first 1 ^ register for storing at least one "calibration, a counting circuit, character comparison means (111) for comparing the contents of the first ^ _L registers with the content of the counting circuit and for emitting a signal via an output terminal in the presence of a "match, several Grttermittel, each of which has an output that is connected to an associated drive circuit, and with at least a first and a second input , wherein the first .Eingang each getter is connected to ^ em output of the comparison means, Schrit.schaltmittel with a plurality of output terminals, in which at least one output terminal with a second input of an associated 0 0 9 8 3 6/1942 2UÜ8323 Gate is connected, wherein the stepping means are suitable, all gates one after the other a stepping signal feed that starts at the point in time after a line of characters of the image drum (40) has been aligned with the light guide means, and that ends before the next Line of characters is aligned with the light guide means, circuit means each stored in the register Advance or shift characters synchronously with the fact that the gates are actuated one after the other by the step holding signal, as well as circuit means that control the counting result the counting circuit each time increase a line of characters of the image drum on the light guide means moved past. 22. Lamp arrangement according to claim 1, characterized in that each - "- Έΐηρβ (11 ') is assigned a charging circuit which comprises a capacitor (G) and a silicon-controlled rectifier (125) with an anode, a Ksthode and a trigger electrode, wherein the anode or the cathode of the silicon-controlled rectifier is connected to an electrode (14) of the associated lamp, the capacitor being connected between the other electrode (13) of the lamp in question and the cathode or anode of the associated silicon-controlled rectifier, furthermore a Voltage source for the simultaneous charging of all capacitors, circuit means by which all silicon-controlled rectifiers are normally kept in the switched-off state, circuit means for supplying a first trigger or trigger signal to the trigger electrodes of selected silicon-controlled rectifiers and circuit means to the feeder. a second trigger signal to the conductive higan after taking away the first Trig i ^ riapulsjj to discharge and -keuteil (20) to the capacitors thereby to let those lights are illuminated, in which the trigger electrode of the respective silicon controlled rectifier has been fed .a first 'XRI ^ .erimpuls. 0 0 9 8 3 ^{6/1 9 A 2 BAD} • SO empty soap