DE1087451B - Method and device for controlling phototypesetting machines - Google Patents

Description

Method and device for controlling photocomposing machines modern photocomposing machines, especially those made up of two structural units for the formation of a registration strip or for photographic reproduction of the characters existing phototypesetting machines, in which a keypad is a Encryption of a tax strip causes and this then for the control a photographic unit for recording lines on the film is for the photographic unity is not unusual, this one without an immediate permanent one Have an observer supervise it. Because it is one of the properties one consisting of two units of this type: machine that the encrypted After its production, the recording strip is placed in a reading and decryption v device can be introduced to then operate the photographic unit to control. In this way a single observer can do the work of a certain Monitor the number of photographic units or the keypad unit for design of an encrypted strip while a previously prepared strip controls the photographic unit.

The control strip made in the keypad generally comprises a series of cipher symbols that make up a line of in photographic Represent the characters to be mapped and to which an end-of-line character is attached connects. This group of characters is followed by a similar group of characters for each set line to be reproduced in the photographic unit. The end-of-line character can be a right-fill, left-fill, center, or exclusion character and the characters that trigger these operations will be, since they are all one perform practically the same control function, under the general designation »line end character« summarized.

A suitably designed photographic unit contains one Set of selectable characters that can be exposed by a shutter mechanism, a light source for the exposure of the characters, an optical system for the projection of a selected character onto a for photographic Suitable location for recording and for reproducing the character as a picture a film arranged there and also a device for performing a Displacement of the film in relation to the photographic recording point to the successive one Exposing characters and reproducing the corresponding successive ones Images for a linear text composition.

In the photographic unit of this type, a line setting carriage, on which a mirror and a projection lens are mounted, across the film can be moved back and forth to search for characters on the Film to assemble into one line while the remaining parts, including of the film and its magazine, are arranged dormant. While moving forward of the carriage finds the illustration of the characters according to the characters on the tax lane. The linear extent of the slide displacement in the forward direction is measured by having one placed on the carriage Grid plate traverses a light beam going to a photocell, and the Movement measured in this way controls the illumination of the light source for the photographic one Reproduction of a character on the film. When the carriage movement is stopped is, then the photographic effect is also canceled, and the progression of the control strip by the decryption device is also stopped, until the carriage moves in the forward direction again.

If all characters represented by characters on the tax strip one line on the film is depicted and recorded, the next one has Character, which is an end-of-line character, causes the carriage to move is reversed. With this same end line character will also be a mechanism for advancing the film in the film magazine is started and brings an unexposed portion of the film into the photographic position and thus in readiness for the mapping of the next line of characters. When the carriage moves behind the line starting position during its reversing movement it is stopped and immediately returned to the forward direction for photographic Recording of the next line started.

In a photocomposing machine of this type, the line-based Continuation of the film in the film magazine when taking pictures the automatic mode of operation of the photographic unit is a recurring work process. It is therefore important to determine whether or not the film does not conform to one End of line character has been advanced. If the forwarding of the If there is no film, the following line is superimposed on the previous line be photographed.

The invention now aims at light typesetting machines of the described Type of advancement or the lack of advancement of the film in the film magazine determine and display and use the film itself for this purpose. This task is achieved according to the invention in that the one used for the photocomposing machine photographic film along one of its edges with a succession of fiducial marks is made of an electrically conductive material, which is provided with electrical contacts to control electrical, from the advancement of the film and thus from the Relative movement between the reference marks and the contacts of dependent circuits work together, which in turn further the photographic work of the machine and the passage of the control strip through the reading or decoding device control so that if the film does not advance the work of the photographic Unity by switching off the recording process and stopping the movement of the control strip is stopped while a subsequent switching of the Films restarted the photographic reproduction of the Characters in connection with the renewed forwarding of the tax strip enables.

The drawing illustrates the device according to the invention in FIG one embodiment. Fig. 1 shows a section of a film strip in plan view, having a series of fiducial marks along one of its edges; Fig. 2 is a Section along the straight line 2-2 in FIG. 1; Fig. 3 leaves a by the movement of Film-controlled circuitry recognizes the circuits that make up its constituent parts are indicated schematically by rectangles; Fig. 4 shows a relay circuit, which is controlled by the switching arrangement according to Figure 3; Fig. 5 shows schematically a relay circuit controlled by the circuit of Figure 4; Fig. 6 shows another switching arrangement controlled by the movement of the film, in which the their constituent circuits schematically illustrated by rectangles are; Fig. 7 is a schematic representation of a relay and counter circuit; which is controlled by the circuit of FIG. In -dem from Fig. 1 apparent Section of photosensitive film 10 coming from a photocomposing machine are those provided with latent images of the set lines of the text to be recorded exposed parts indicated by elongated rectangles drawn in dashed lines, each representing a set line of text. There are holes at the ends of each row 12 punched out in the film 10, which have a certain relationship to the lines and used for correction purposes if necessary. Punching out the holes 12 takes place after the associated line is recorded on the film, and the Holes are then used to advance the film in the film magazine.

One long side of the film 10 is with over its entire extent Marks 13 arranged at a mutual distance are filled in. Each brand 13 consists made of a suitable electrically conductive material that is attached to the film by printing can be attached, and has a base part 14, of which rake-like four conductive strips 15 of the same width extend from each other by one of the Width of each individual strip are equidistant from each other. For example the strips 15 can have a width of 1.5 mm and the distance between them also be 1.5 mm, which will detect film movements of 1.5 mm, and so will the setting of character lines of small point size, e.g. B. of 6 pt pica, enables. In general, the dimensions of the strips 15 and those separating them Distances depend on the degree or amount of film movement which determine is.

The dimensions of the base 14 and the length of the transverse to the film Directed strips 15 only need to be of a value that the interaction of the conductive marks 13 with electrical contacts resting on them in a more reliable manner Way guaranteed. The distance between the individual reference marks can be the same be the width of the strips 15 and, for example, also be 1.5 mm. on this way the distance between corresponding points of two consecutive ones Marks are 12 mm, and this dimension can be used to indicate the total amount of the film advance to be used.

Those intended to work with the leading reference marks 13 Contacts are attached to an L-shaped carrier 16 made of insulating material, which is attached to the wall 17 of the film magazine attached by two screws 18 and its contact-bearing Part after the leading marks that passed him as the film continued 13 is aligned.

A contact 20 that cooperates with the strips 15 of the marks 13, consists of a rotatable contact roller 21 and a conductive one carrying it Leaf spring 22, and the leaf spring 22 is with a conductive strip 23 through two the insulating support 16 traversing rivets electrically connected. Another Contact 25 by a rotatable contact roller also mounted on a leaf spring 54 is formed, stands with a conductive strip 26 and one of a rotatable Contact roller 30 and a leaf spring existing third contact 27 with a conductive Strip 28 through two rivets penetrating the insulating material carrier 16 in electrical Link.

The conductive strips 23 and 28 are similar to those in FIG. 3 schematically shown switching arrangement connected, for which they together with the contact rollers 21 and 30 form a switch that is closed when these two roles one Strip 15 resp. touch the base of a leading brand 13, while it is open when the contact roller 21 to rest on the non-conductive Part of the film 10 comes between the strips 15 or both contact rolls, en 21 and 30 with the non-conductive part of the film between the reference marks 13 in contact are.

If the two contact rollers 21 and 30 on a strip 15 and are on the base of a conductive mark 3, represent them for the circuitry 3 represents a short circuit. The one indicated in FIG. 3 by the left rectangle Amplifier 31, which can be a triode amplifier of conventional design, is conductive State that the conductors 23 and 28 are connected to a cathode resistor and short-circuit this with the assumed bridging by a conductive mark 13 and this short-circuit effect conducts the three-electrode tube when it first occurs power. The remaining components of the switching arrangement according to FIG. 3 are in the idle state, and in a bistable multiple chopper or rocker 32 is the electron tube 33 non-conductive and the electron tube 34 conductive as well as the one in the anode circuit Relay coil K energized. Since the coil K is fed with current, they will controlled relay contacts brought into effect, d. i.e., in that which can be seen from FIG Switching structure, the contacts K 1 are separated and the contacts K2 are closed.

It is assumed that an end line character has been deciphered in the phototypesetting machine, which is the reversal of the movement of a carriage carrying the projection lens for the photograph and its return to the position to be assumed by it at the beginning of the setting of a line, as well as, for example, according to patent 960,247 Film magazine for advancing the film and for transferring an unexposed part of the film into the position required for taking up the next line. According to the invention, this line end character is transmitted after the chopper 32 of the switching arrangement according to FIG. 3 via a line 35 in the form of a negative pulse, which has the result that the tube 33 is conductive and the tube 34 is non-conductive. The relay coil X is therefore de-energized and the contacts K 1 and K 2 (cf. FIG. 4) return to their normal state, and in this way a circuit for charging the capacitor 36 is established via the contacts K 1 which are closed again .

When the film 10 is advanced in the film magazine by the line end character is, the short circuit 4 between the contacts 21 and 30 is interrupted because the Contact 21 with the non-conductive part of the film between two adjacent strips 15 comes into contact. As a result of the cancellation of this short circuit, the cathode resistance becomes of the amplifier 31 switched back into the circuit and thereby the cathode voltage increased and the tube extinguished. This anode voltage rises immediately, and .a positive voltage pulse is generated and through line 37 and a Rectifier 40 transmitted to line 41. If the circuit parameters are like this are such that the positive pulse is suitably shaped, the line 41 must be connected directly to the line 42 opening into the chopper 32, while, when the impulse has to be brought into the appropriate form, in a pulse converter is to be introduced, which on its output side via the line 42 is connected to the chopper 32. The arrangement of a pulse converter is thus just by the requirements of the chopper in terms of pulse shape and by the peculiarities of the other components of the Switching arrangement determined.

The positive pulse emanating from the amplifier 31 returns the chopper 32 to its original state, ie the tube 34 becomes conductive and causes the coil K to be energized again, and the tube 33 is switched off. The contacts K 1 are opened and the contacts K2 are closed, and the closed contacts K2 enable the capacitor 36 to be discharged via a relay coil 117 which remains energized until contacts BCC 2 are opened.

Figure 5 shows a relay coil BCC in a circuit containing seven contacts. The closure of the contacts RCD 3 brings an excitation circuit for the coil BCC of the relay that triggers a brake clutch for the machine from one pole of a power source through the contacts ISS1, S26, M2, RCD 3, SM 2, the winding BCC, the contacts LEH 2 , SE3 and FCD7 after the other power source pole. The relay BCC acts with a time delay and therefore does not take effect immediately when its coil is energized.

When the closure of the contacts indicates that the film in the magazine has been advanced by a line terminator, the circuit containing the relay coil BCC can operate normally and allow the photographic unit to operate uninterruptedly. The excitation of the coil BCC, in addition to the control of the forward movement of the carriage carrying the projection lens, also results in the separation of the contacts BCC 2 with a time delay due to the corresponding design of the coil and the subsequent disconnection of the coil 117. The circuit is thus in its initial state and in readiness for a subsequent determination of the advance or non-advance of the film.

Assume that the movie then does not correspond to an end-of-line character is advanced, contacts 21 and 30 are replaced by the conductive reference mark connected, and the cathode resistance of the amplifier 31 (see. Fig. 3) remains short-circuited, and the tube of the amplifier therefore becomes conductive, so that no voltage pulse is produced. The relay K is previously .by the negative caused by the line end character Pulse has been disabled, which puts the chopper 32 in its steady state transferred, in which the tube 33 is conductive and the tube 34 is at rest. As a result, no circuit is made for the relay coil BCC, as the The relay causing the contact to close is not energized.

The non-excitation of the coil BCC prevents the coil FCD from being de-energized and a forward movement of the slide carrying the projection lens takes place. As a result, the desired result is achieved; i.e., the photographic effect is interrupted if the felt does not advance according to the line end character will. By stopping the lens carriage in its forward displacement also becomes the passage of the control strip through the decryption device stopped. A movement of the film immediately becomes a thrill of the initiating the restart of the automatically working photographic unit Coil.

The same result as when the contact 21 was transitioned from a conductive one Strip to a non-conductive part of the film located between the strips is obtained when both contacts 21 and 30 with the non-conductive part of the film come into contact, as is the case when following from a reference mark cross over to the next following mark. The opposite state in which the contact is made 21 alone or each of the two contacts 21 and 30 to the non-conductive part of the film moving towards a conductive strip makes the presence of one Phase inverter 45 in Fig. 3 understandable.

If one or each of the two contacts 21 and and 30 to the non-conductive Part of the film coming into contact becomes the cathode resistance of the amplifier 31 is not short-circuited, so that the amplifier tube becomes conductive. A forwarding of the film, which causes both contacts to come into contact with a conductive mark 13, short-circuits the cathode resistance and triggers conductivity in the amplifier, thereby creating a negative pulse at the anode of the amplifier tube. A Rectifier 40 prevents this pulse from being transmitted to chopper 32 or the pulse shaper 43. The pulse is, however, through the line 46 after the phase inverter 45 which is simply another triode amplifier which is conductive but which is switched off when the negative impulse is received.

A positive voltage pulse is generated when the anode voltage increases, and this pulse is followed by conductor 47 and rectifier 50 the chopper 32 or optionally after the pulse shaper 43. As can be seen is therefore with 'constant conditions either the amplifier 31 or the Phase inverter 45 must be conductive, and "run the contacts by advancing the film 21 and 30 from a conductive to a non-conductive part of the film or be transferred from a non-conductive to a conductive part of the film, a positive pulse is transmitted to chopper 32 through line 41.

Upon responding to an end-of-line character which the chopper 32 to Shutdown of the tube 34 and the relay coil K and for bringing about the conductivity caused by the tube 33, it is immaterial how many pulses through the amplifier 31 and the phase inverter 45 due to a relatively long advance of the film, e.g. B. when setting lines with a considerable point size, are generated, because only the first impulse that arises causes the chopper 32 to take effect brings him into the stable state with conductive tube 34 -guides and with excited Relay coil K returns.

The circuit arrangement shown in FIG. 6 contains, as FIG. 3 shows, a chopper 51, but in this case a monostable switching structure with a usually conductive tube 52 and with a non-conductive tube 53. the Relay coil L is in the anode circuit of tube 53. The conductive strips 26 and 28, which (see. Fig. 1) are connected to the contact rollers 54 and 30, enable the short-circuiting of a cathode resistor in the triode amplifier 55 and thereby making the amplifier tube conductive or non-conductive. If, according to FIG. 1, both contact rollers 54 and 30 touch a conductive reference mark 30, the cathode resistor is short-circuited and the amplifier tube is conductive, and when the connection between the contact rollers 54 and 30 is interrupted and the Contact 54 with the non-conductive film comes into contact with the reference marks, the short-circuit of the cathode resistance is canceled and the amplifier tube turned off. This has the consequence that the voltage at the anode increases in value and delivers a positive pulse. However, when the connection is interrupted of the contact rollers 54 and 30 does not use positive pulses, and therefore the Removal of the short circuit with no effect.

A subsequent or continued advance of the film will (see. Fig. 1) both contacts 54 and 30 by touching a conductive reference mark Bring back in effective connection and again the short circuit at the cathode resistor of the amplifier and the conductivity of the amplifier 55 bring about. The anode voltage at the amplifier tube 52 decreases from -f- B to one of the decrease in the anode resistance dependent value, d. i.e., a negative voltage pulse is generated. This impulse is transmitted via line 56 to chopper 51, in which the tube 52 goes out and tube 53 comes to light. Between the amplifier 55 and a pulse shaper 57 can be switched on to the chopper 51, which follows the chopper 51 impulse to be transmitted, if necessary, gives the appropriate shape. By properly shaped pulses, the relay coil L is excited, which can then be seen in FIG Circuit the contacts L 1 closes. Since the chopper 51 is of a monostable design is, the ignition of the tube 53 and the excitation of the coil L has an approximately that The length of the negative voltage pulse is the same as the extended duration. Upon termination of the pulse, the chopper returns to its steady state in which the Tube 52 is conductive and tube 53 is extinguished.

The instantaneous excitation of the coil L in Fig. 6, which with the Closure and separation of the contacts L 1 is accompanied in Fig. 7, has the consequence that the stepping switch coil N is energized and de-energized, so that the stepping switch brush 60 moved one position further and to the next following contact 61 of the step switch is set. There are a total of twenty-six contacts on the step switch provided, which are arranged in a circle, so that the brush when indexing from one contact to the next after going through the twenty-sixth Contact 63 returns to the first contact 62. The twenty-fifth contact is 64 with the tens counter coil 65 of a counter of suitable type, e.g. B. a veeder root counter, and further through the rectifier 66 and the stepper breaker contact 67 connected to the stepper switch coil N. As a result, every time the Brush 60 touches the twenty-fifth contact 64, the coil 65 as well as the Step switch coil N are energized. The breaker contacts 67 are immediately separated, and the brush 60 transitions to the twenty-sixth contact 63. the Counter coil 65 is de-energized and the counter is caused to display the next higher number to specify.

When the contacts L 1 subsequently close, the brush 60 causes the first contact 62 to be adjusted again. The rectifier 66 prevents the creation of a circuit for the Counter coil 65 through the contacts L 1 and the breaker contact 67. That the brush 60, although twenty-six contacts are provided on the step switch, the twenty-fifth Contact 64 touched on every twenty-fifth closing of contacts L 1 is through the automatic action that takes one step during each work cycle of the switch conditionally.

With the dimensions of the reference marks given as an example that a linear film advance of one foot twenty-five reference marks 13 will cause contact rollers 54 and 30 at twenty-five consecutive Closures or openings of the contacts L 1 to pass. The counter will therefore act as a light device for the film, indicating how many feet of film in the photographic Work has been exposed: The invention can also be used in detail in one of the Execution according to the drawing can be realized in a different way. For example The electrically conductive fiducial marks can be placed on the film by similarly arranged Grooves or holes are replaced, which control mechanical switches that on take the place of electrical contacts. It can also be used as a security device preventing the photographic unit of a phototypesetting machine from working or permitting device according to the invention are also designed so that it not only automatically monitors and controls the progression of the film, but also a visible or audible warning sign in connection with their safety effect or gives up independently.

Claims (10)

PATENT CLAIMS: 1. A method for controlling the photosensitive film which is used in phototypesetting machines to display the characters of a sentence in parallel set lines, can be advanced by an electrical line spacing after each line setting and can then be influenced photographically to reproduce the next line, characterized in that of the film itself in the progress or in the absence of its advancement through the closure or interruption of contacts, depending on the implementation or the absence of its respective movement step, circuits for the determination of the effectiveness or ineffectiveness of the line end character and for the prevention of the required in the event of its ineffectiveness photographic recording process are produced. 2. Control device for the film of photocomposing machines for carrying out the process according to claim 1, characterized in that the film (10) is along one of its edges with a series of consisting of electrically conductive material and in succession is provided separated by non-conductive film parts reference marks (13) on which When the film is shifted, contacts (21, 30) slide the switches together with them (15, 21 and 14, 30) in a circuit (23, 28), depending on their interruption or closure, the occurrence or absence of those caused by the line end character Continuation of the film (10) detects and in the absence of this film advance in each case via a reference mark (13) is closed and then the work of the photographic Recording device prevented. 3. Control device according to claim 2, characterized in that that the conductive marks (13) attached to the film (10) each consist of several transversely strips parallel to the longitudinal direction of the film and separated by insulating film parts (15) and of a part (14) connecting them at one of their ends and the circuit (23, 28) to be closed and opened to one of the individual strips (15) touching contact (21) and one on the strip connecting part (14) the reference marks (13) sliding contact (30) is connected. 4. Control device according to claim 3, characterized in that when the film advance does not take place Preventing the photographic pick-up device from working at the end of a line Circuit (23, 28) an amplifier (31) and a bistable chopper (32) as well a phase changer (47) and, if necessary, between these two switching structures a pulse shaper (41) and the amplifier (31) at one by a line end character brought about film advancement through the thereby caused interruption of him containing circuit (23, 28) for delivering a positive voltage pulse after the chopper (32) caused and thereby the circuit (23, 28) in the standby state for a subsequent determination of the continuation or non-continuation of the Films (10) is brought. 5. Control device according to claim 4, characterized in that that the rubbing on the strip connecting part (14) of the reference marks (13) Contact (30) and another, also sliding on this reference mark part (14) Contact (54) are in a circuit (26, 28), which they through when a the end-of-line characters caused the film to advance via the in this case with them in Contact coming reference mark (13) close and then each of the exposed Part of the film (10) measuring counter (65) via an amplifier (55) and a monostable Chopper (51) and, if necessary, one connected between these two switching structures Brings pulse shaper (57) to effect. 6. Control device according to one of the claims 2 to 5, characterized in that the operation of the photographic recording device in the absence of a film advance preventing circuit (23, 28) in his Closing by the associated sliding contacts (21, 30) and a reference mark (13) also the drive of a machine that controls and shifts automatically Brings register strip to a standstill. 7. Control device according to one of the claims 3 to 6, characterized in that the parallel strips (15) of the reference marks (13) as oblong rectangles with the same width and the same width transversely to the direction of film travel Shaped spaced and connected by a likewise rectangular part (14) and the individual reference marks (13) are the same in size with the strip spacings Successive intervals. B. Photosensitive film for photocomposing machines controlled by tabs, characterized in that electrically conductive reference marks (13) are provided in succession with separating, non-conductive intermediate parts along one side edge of the film surface (10). 9. A film according to claim 8, characterized in that the reference marks (13) each consist of a plurality of strips (15) parallel to the longitudinal direction of the film in the form of elongated rectangles of equal width and of a likewise rectangular part ( 14) and the distance between the strips (15) and the entire reference marks (13) is equal to the width of the strip. 10. A film according to claim 9, characterized in that the reference marks (13) are produced by applying a conductive substance to the film surface. A priority document was displayed when the registration was announced.