DE2064438A1 - Device for scanning and / or printing an original - Google Patents

Description

Device for scanning and / or blanketing an original. The invention relates to a device for scanning and / or printing a template containing a scanning and / or printer head, a drum as a carrier of the original and a Device by means of which one in two directions perpendicular to one another Relative movement between the scanning or printer head and the drum can be produced is.

From British patent specification 1 19o 600 is a device for simultaneous scanning and printing of an original become known. This well-known Device contains a common large drafting table, over one half of which for scanning an artist's drawing a scanning head and over its other half for simultaneous printing of a sample cartridge corresponding to the clinician's drawing a printer head is transportable. The sequence of movements happens with the known Device in such a way that initially scanning or printer head together in the line direction, then by a line spacing in the column direction and then again in the row direction be moved.

Stepper motors are used to carry out the various movements used. The artist's drawing is scanned with the help of a pulse operated lamp, which is activated briefly when the scanning head is at a standstill.

In a scanning device known from British patent specification 1 oll 605 on the other hand, a drum is used as a support for the artist's drawing is scanned at a standstill along a circumferential line in that a on a Slide-mounted scanning head is initially set to a specific circumferential line, then the drum rotated step by step until the entire circumference is scanned and then the scanning head is set to a new circumference.

The disadvantage of these known devices is the fact that only relatively low scanning and printing speeds due to the various motion sequences can be achieved. To avoid this disadvantage and to create a device which are used for both scanning and printing at comparable speeds can be, is therefore the object of the invention.

The invention is based on the device referred to in the introduction characterized by a switchable on and off with continuous rotation of the drum Clock generator for generating a scanning and / or printer clock and one and Switchable clock generator for controlling the scanning or printer head in the axial direction the motor that transports the drum.

The main difference between the inventions and the known Vorrichtunzen consists in the fact that the original is scanned during continuous transport and / or is printed, whereby by switching the one clock generator on and off on the one hand that part of the circumferential surface of the drum is determined which is scanned or is to be printed, and on the other hand clock pulses with a predetermined frequency are released, the scanning or printing speed, the number of scanned Specify the points to be printed and the size of these points. Also will thereby the further clock generator is controlled by a motor that controls the feed rate of the scanning and / or printer head after scanning or printing a full line of the original causes. According to the invention, the advance can either take place during a second rotation of the drum occur during which there is no scanning or printing, or in a section of the IPrommal extent that is not covered by the original. the The speeds achievable by the invention are at least? ovo Hz for sampling and at least 200 Hz for printing at a peripheral speed the drum of about 1 m / sec.

For simultaneous scanning and printing in accordance with the device of British Patent 1,190,600 two drums can be provided, wherein is scanned on one and printed on the other. With an advantageous Further development of the invention, however, the scanning head and the printer are the same Drum mounted.

In a further embodiment of the invention is on the drum only a single slide is provided, either the scanning head or the Printer can be mounted. This embodiment is suitable for such processes where two different drums are used either for scanning and printing or in which the scanning process is carried out in a process step that is independent of the printing process he follows.

To further improve the various embodiments of the invention it is proposed to attach the Vorlnge in such a way on the drum circumference that a Part of the drum surface remains free. This measure enables the advance of the slide in the axial direction in each case in that time segment in which the free part of the drum circumference wanders past the scanning head or printer.

The invention is described below in conjunction with the drawing a special embodiment described.

Fig. 1 shows schematically the overall structure of the invention Contraption.

Fig. 2 shows part of the scanning and printing device.

Figures 3, 3a and 3b show the manner in which the scanned Signals are stored.

4a and 4b show the different phases during the scanning or printing process when using the scanning and printing device shown in FIG.

FIG. 5 shows schematically that for transferring the scanning signals circuit arrangements required in the memory device.

FIG. 6 shows part of that used in the device of FIG Logic.

Fig. 7 shows schematically the circuit arrangement used for conversion the information stored in the memory device into control signals for the printing facility is required.

FIGS. 8, 8a and 8b schematically show a central control unit or parts thereof.

In Fig. 1, the overall structure of an inventive is schematically Device for the automatic scanning of a freely drawn drawing, the so-called Artist's drawing 1, and for automatically printing one out of individual color dots composite drawing, the so-called sample cartridge shown lo. The artist's drawing 1, like the sample cartridge 10, is generally drawn in multiple colors, but is also known consist of areas with different shades of gray or the like, if these to different reflection or

Lead transmission behavior. Also owns the artist's drawing 1 shows how the pattern cartridge 10 is generally the size of a repeat, i.e. it shows the smallest regularly recurring pattern e.g. of a textile product or a mossik picture.

During the scanning process, the artist's drawing 1 is made with the aid of an optical-electrical Scanning head 2 scanned line by line. The scanning signals obtained thereby become evaluated and / or sorted in an evaluation circuit 3 and then via a coding and decoding unit 4, a buffer 5 and a logic 6 of a storage device 7, in which they are permanently stored in digital form.

When printing, the information saved is first read out from the memory device 7 and then via the logic 6, the buffer 5 and the coding and decoding unit 4 is supplied to a printer 9, which is a drawing paper Printed point by point and in this way a corresponding to the artist's drawing, but produces a pattern cartridge 10 consisting of many individual points in the form of a grid, where each halftone dot is printed in a single color The single dot Te of the finished sample cartridge 10 are, for example, one stitch each of a knitted fabric or each assigned to a Mossiksteinchen of a Mossikbild.

By comparing the sample cartridge lo with the original artist's drawing 1, the designer can determine whether the knitting pattern equivalent to the pattern cartridge lo or mosaic picture optimally corresponds to his ideas or whether there are still changes are to be made. After making such changes (e.g. point-by-point correction the sample cartridge lo) and after deleting the when scanning the artist's drawing stored information is then scanned the sample cartridge lo, so that in the memory device 7 now corresponds to the corrected sample cartridge lo Information is stored. The operations described can be repeated as often repeat until a sample cartridge lo is printed out during the printing process that is optimal appears, which is tantamount to the fact that the information stored, the can later be used for other purposes, exactly the desired sample cartridge lo correspond.

In order to avoid that the entire sample cartridge lo is scanned anew and must be stored, is provided according to the invention, which is in the memory device 7 to provide the information entered with addresses. This makes it possible to use the correct stored information step by step. Measures are preferable provided that enable an exchange of all those information that are assigned to a preselected line of the sample cartridge lo.

Between the printer 9 and the storage device 7, depending on In the construction of the printer, delay stages 11 and 12 can still be switched to to delay the information corresponding to the individual colors relative to one another.

When it is established that the information stored is exactly what you want Lead sample cartridge, the memory device 7 is read out again. The selected ones Information is transferred via the buffer 5 and others, not shown Facilities either for direct Control of the sample cartridge io reproducing machine 13 used or a device 14 for manufacturing a control strip suitable for the electronic control of such machines forwarded.

Between the evaluation circuit 3 and the memory device 7 or the storage device 7 and the machine 13 or device 14 can also have one Device 16 may be connected in order to bring the signals into a desired order which is called "Vrsetz" in the knitting technique ZBe.

3lit the device described with reference to FIG. 1 can be used in the same In the same way, artist drawings 1 drawn without a grid and pattern cartridges 10 can be scanned. It also contains facilities that will be described later and by means of which scale changes can be made, i.e. a Artist's drawing 1 can optionally be stretched or over its entire width or height be compressed. This advantage makes it possible, on the one hand, to have a constant point size to print and on the other hand to evaluate an artist's drawing even if they is only drawn to the wrong or visually unattractive scale.

Since, in addition, the scanning of an artist's drawing 1 with the scanning is equivalent to a sample cartridge 10, is in the following in the scanning process only referred to the artist's drawing 1.

During the scanning process, the artist's drawing 1 is rotatably mounted on a Drum 101 (FIG. 2), for example, clamped in such a way that its Y-axis is parallel to the drum axis and its X-axis perpendicular to the drum axis in the circumferential direction of the Drum 101 runs on two rails Io3 parallel to the drum axis Carriage 105 slidably mounted by means of a stepper motor 107 in the Y direction Can be moved back and forth along a surface line of the drum 101. On the The scanning head 2 is mounted on slide 105.

Before the start of the scanning, the scanning head 2 is on the beginning of the first line of the artist's drawing 1 running in the X direction, see above that with the first valid drum revolution the first line is scanned, at the end of the first or each subsequent line scanned are the stepping motor 107 so many step pulses supplied that the scanning head 2 at the beginning of the next Drum rotation exactly above the beginning of the next line of the artist's drawing to be scanned 1 stands.

During the printing process, the paper to be printed on is accordingly on the drum surface spanned in such a way that the Y-axis is parallel to the drum axis its X-axis runs in the circumferential direction of the drum lol. On the sledge 105 however, the printer 9 is mounted. As with scanning, this is what is to be printed Paper printed line by line until the cartridge 1o is completed. The printer 9 is preferably equipped with printer pins 106 spaced apart in the X direction.

In order to achieve the greatest possible scanning speed the scanning according to the invention in a fully automatic continuous process, wherein during the entire scanning or printing process, the drum lol by means of a Stepping or synchronous motor 1o9 and an interposed gear 111 continuously rotated and the carriage 105 is advanced step by step.

The gear 111 can be used as a shift gear for setting several Circumferential speeds of the drum lol be formed. The attitude different Rotational speeds of the drum 1o1 can, however, also take place purely electrically, as will be described later with reference to the central control unit (Fig. 8). The right The setting is preferably made when the "Scan" or "Scan" buttons are pressed.

nDrucls: en "e The advance of the carriage 105 is to be carried out in a period of time when not being scanned or printed at the same time will. In the embodiment described here, the drum is therefore larger than the maximum possible extension of the artist's drawing 1 in the X direction. Through this always remains on the drum circumference when scanning or printing between the end a line and the beginning of the following line exposed part, so that the Feed can always be made when this free part is on the scanning head 2 or printer 9 wanders past. According to other embodiments, the drum lol, so that there is enough time for the Y-advance after scanning or printing cycle one line again and on this second cycle the scanning or block printing or use both embodiments in combination, if for example, the scanning process runs much faster than the printing process.

Rotatable signal disks 113, 115 with gap or hole markings 117, 119 made with optoelectronic scanning devices 121, 123 are scanned, or any other signal transmitter attached. The markings 117, 119 can be exactly at the beginning of the line or the end of the line in the artist's drawing 1 can be set so that the scanners 121, 123 at each rotation the drum lol emit an electrical signal at the beginning or end of the line. In the following it is assumed that the marking 117 on the beginning of the line and the Marker 119 is set to end of line The one generated by marker 117 The signal is therefore called the MZA signal (Meehanian line start) and that of the marker 119 is called the MZE signal (mechanical end of line).

On the frame supporting the drum 101 is a connector for a Kobel 125 is provided, in which all lines are accommodated, Mittelele those required to operate the drum or generated during operation of the drum Voltages, signals use. fed or removed.

According to one embodiment of the invention, the carriage 105 has a guide 127 into which either the scanning head 2 or the printer 9 is pushed can be. A screw 129 is used for fastening. According to another embodiment two separate drums lol can be provided, which are only used for the scanning or Printing process can be used. According to further embodiments of the invention, can on the rails 103 a second carriage 105 is arranged, which through the same or another stepping motor 107 is transported in the Y direction. This arrangement is useful if you want to scan and print at the same time. In the end it is also conceivable, the carriage for the scanning head on the front and the Arrange carriage for the printer on the back of the drum.

For scanning the artist's drawing 1, a scanning head 2 can be used according to the British patents 1170947 and 1190093 are used hereby is expressly referred to. Such scanning heads are used to detect the light reflected from the illuminated artist's drawing and essentially contain three photodiodes and three color filters in front of them, through which each photocell only the light from a narrow wavelength range is supplied (e.g.

blue, green, red). The photodiodes are followed by preamplifiers, those with the white basic color of the Küristler drawing 1 to the same output level to be brought. The digital implementation of the analog signals at the outputs the preamp appear is done by post-amp with suitably variable Threshold values in the evaluation circuit 3 connected downstream of the scanning head 2, which has three outputs 31 (FIG. 1) corresponding to the three photodiodes. With four-color Artist's drawing (blue, green, red, white) appears when scanning a blue, green or red point at each of the three outputs, a signal when scanning a white point, on the other hand, at all three outputs at the same time a Signal. With the additional use of the colors turquoise, purple and yellow appear when scanning such a color at two outputs of the evaluation circuit 3 signals. These signals are fed to the coding and decoding unit 4.

In the coding and decoding unit 4, the color information, which correspond to the possible states at the outputs 31, binary coded Words assigned. When using four colors, words with two each are sufficient Bit such as 111111 for color 1, "10" for color 2, "o1" for color 3 and "oo" for Color 4.- Since besides the color information, further information is stored are, each of these words in the logic 6 is increased by one bit, so that a total of three-digit words emerge. To increase the security against errors can parity bits can also be used. After all, it is possible to use any word record twice. fla coding and decoding units are sufficiently known, the description of further details is dispensed with.

According to an embodiment of the invention is used as a memory Magnetic tape 701 (Fig. 3, 3a, 3b) is used because this is advantageous for reasons of cost is. However, in order to achieve that the magnetic tape for direct control, for example a knitting machine operating at 100 Hz can be used, the recording must the information on the magnetic tape is done in a special way.

According to FIG. 3, the magnetic tape 707 is described in blocks, wherein each recorded information block 703 contains all information about one line of the Artist's drawing 1 contains, In Fig. 3, the information blocks 703 are continuous Numbered from 1 to y to show the order in which they were recorded will. Accordingly, when the magnetic tape 701 is advanced (arrow V), the first half 1 to y / 2 of all information blocks 703 are recorded while the remaining y / 2 + 1 to y information blocks 703 written on return (arrow R) will. At the end of each information block 703, a special character is recorded. This special character has in the information blocks 1 to y / 2-1 and y / 2 + 1 to y-1 meaning "end of line" and indicates the end of a line of the artist's drawing 1 ("ZE sign 705" in Fig. 3a). A special character that appears at the end of the last when Information blocks y / 2 recorded in advance are written, means that the Half of all lines of the artist drawing 1 has been recorded. This special character is hereinafter referred to as the "first y / 2 character", the electrical signal assigned to it as the first y / 2 signal ". A coding identical to the y / 2 symbol Sign 709 (Fig. 3a), which is referred to below as the second y / 2 sign, is recorded at the end of the last information block y when rewinding. Ee there indicates that now all lines of the art drawing 1 are scanned and recorded have been.

Since every special character and every color information has a three-digit binary word is assigned, both the forward and the reverse are the Magnetic tape 701 three tracks each required. One further track each for forward and reverse is required to write an address between the information blocks, the when correcting the sample cartridge lo is used to assign to a specific line Find information block and replace it with a new information block. This is advantageous if the cartridge has, for example, 500 or 1000 lines, however, only a few lines should be corrected.

Finally, a ninth track of magnetic tape 701 is needed to write down synchronization number 711 (Fig. 3n) when moving forward, and when moving backward of the tape and enable the information blocks written on return to be read essentially in the same place as that written in advance Information blocks are arranged. Instead of a synchronization character, however, the ZE and y / 2 characters are also used for this purpose.

The distribution of the required tracks is, for example, as follows: Forward Track 1 Track 3 Track 5 Track 7 Track 9 Return Track 2 Track 4 Track 6 Track 8 # Color 1 1 1 1 o o Color 2 1 o 1 o o Color 3 o g 1 o o Color 4 o o 1 o o ZE 1 1 o o o y / 2 1 o o o o A o 1 o 1 1 The A-sign 712 (Fig. 3a) means that immediately this character is followed by the address of an information block.

The address for a particular block of information is used for convenience of the entire facility is appended to the preceding information block. The address for the second follows the first information block immediately Information block and the address immediately after the last information block for the first information block. Therefore, the tape will be found when searching for the searched address stopped, then you can immediately start with the recording or the Reading of the desired information block can be started. In Fig. 3a, for example an information block 703 is shown which is written in advance and out the words for four colors F1 to F4, a ZE character, an A character and a four-digit Address exists. 3b, on the other hand, shows the last recorded during the rewind Information block which differs from the information block according to FIG. 3n by the y / 2 symbol and another address differs. This information block begins in rest where the synchronization character 711 of the one assigned to it, recorded during the advance Information block 703 is located.

If the report and thus the artist's drawing 1 or

Cartridge lo from an odd number of lines, then it is to the to maintain the organization described, in a defined place, which is from Fig. 3 results, an empty block 713 is formed, although it is approximately at the same point how the information block y / 2 + 1 lies, but not in any single track Owns information.

When reading in and reading in, the magnetic tape 701 is in start / stop mode, i.e., it becomes continuous when an information or blank block 703 or 713 is recorded transported past the read / write heads (not shown) and then for so long stopped until all needed to store a block of information oak trees are available. At the end of the / 2nd information block, the first y / 2 signal switched from forward to reverse, and then begins the recording of the remaining information blocks in the same way as for the advance. The second y / 2 signal switches back from reverse to forward.

Then the read / write heads for tracks 1,3,5,7 and 9 is located at a point on the magnetic tape 701 which is before the first information block so that the next start of the magnetic tape 701 (read cycle or correction) the entire first information block is detected. As for the band start or band stop however, different time intervals are required and these time intervals can also fluctuate, this must be done by special measures, e.g. the inventive Synchronization characters in the track 9, are ensured, which according to Fig. 3a are in the same place as the A characters K712. When the magnetic tape is rewinding 701 the read head for track 9 is switched on, and always then A synchronization signal is generated when the magnetic tape in track 9 has a synchronization signal 711 has. The synchronization signals are then given via a gate circuit Bin storage of the next information block free, so that the information blocks y / 2 + 1 to y almost exactly where the information blocks begin and end Start and end from 1 to y / 2.

Based on the addresses and the time interval required for the belt to stop is, the changeover from the forerun caused by the two y / 2 characters also takes place to reverse or vice versa so that the next time the tape starts the entire following Information block is captured.

The circumference of the drum lol (FIG. 2) is according to one embodiment of the invention so much larger than the maximum possible width of the artist's drawing 1 or cartridge lo selected in the X direction that during the period in which the uncovered part of the drum lol passes the scanning head 2 or printer 9, the scanned information can be accommodated on the magnetic tape 701 (Scanning process) or a stored information block 703 is read out in this way and can be processed (printing process) that the printer when the drawing paper passes all control signals required for a line can be made available.

The phases resulting therefrom during scanning or printing are shown schematically in Fig. 4a, b.

Fig. 4a shows the scanning process, with the drum lol in direction of the arrow P is rotated, the scanning head 2 is mounted on the carriage 105 and the artist's drawing 1 is stretched over part of the drum circumference.

During a phase A, one line of the Artistic drawing scanned. The phase A is caused by that of the marker 117 generated MZA signal (Fig. 2) initiated. The scanning signals obtained are shown in the buffer 5 pushed and during a phase B, the. by the ZE signal (End of line) is initiated, transferred to the magnetic tape 701. The ZE signal corresponds in time to the MZE signal generated by the marker 119, but is electronically generated, phase B is generated by another meter AE signal (end of address) ended, which indicates that one line of the art drawing corresponding information block select the address for the next information block are accommodated on the magnetic tape 701.

In a phase C, which lies between the AE signal and the MZA signal, is neither scanned nor recorded on magnetic tape 701. During the phases B and C is also the setting of the carriage 105 to the next line the artist's drawing. The duration of phases A, B and C depends on the breadth of the artist's drawing 1 in the X direction and the time required to adjust the carriage 105.

During the printing process, as shown in FIG. 4b, it is in the direction of the arrow P rotated drum lol the drawing paper stretched, which after the printing process the whisper cartridge forms lo.

The printer 9 is mounted on the carriage 1o5. After an ST signal (Start), which at the first start by means of a hand switch and then always after printing a complete line as "DE signal" (end of print) is generated by a counter, the reading out of an information block 703 begins from magnetic tape 701 and the input of this information block into the buffer 5.

Phase D is ended by a signal from a comparison counter of the buffer and indicates that the information block is in the buffer 5 is ready for printing. This signal is referred to below as the VZD signal (Comparison counter printing). In a phase E, which is of the length of a Row of the sample cartridge lo, nothing happens. When the next one appears MZA signal then begins a phase F in which those in the buffer 5 are available Information can be printed out. The DE signal then directs the reading of the next one Blocks of information and the advancement of the carriage 105 by one line.

The buffer 5 shown in FIG. 5 and 7 is outlined with a dashed line.

The buffer store 5 receives from the central control unit 8 (Fig. 8) the necessary control signals or feeds these signals.

In Fig. 5 those parts of the buffer 5 are shown, which are required for the scanning process, all of which are unimportant or for the person skilled in the art obvious parts are omitted.

The intermediate memory 5 contains two shift registers as essential components 501 and 503, which preferably have at least as many memory elements as is the sum of the grid points of a line and that for the special characters and Addresses required bits results.

The two shift registers 501, 503 are those in the coding and Decoding unit 4 formed words in parallel on the two information inputs offered. The current input of the shift registers 501, 503 can be via an OR gate 5o5 the pulses formed at the output AU of the central control unit 8 of Sampling clock (AT) are supplied. The output of OR gate 505 is also connected to the counter input of a comparison counter 507, which is fixed to the number of the memory cells of the shift registers 501, 503 is set and when it is reached this number emits a VZA signal (comparison counter. scanning).

With the clock inputs of the shift registers 5c1, 503 and the counter input of the comparison counter 507 are also the outputs of two via the OR gate 505 Clock 509 and 511 connected, of which the clock 509 pulses with relative high repetition frequency (fast cycle, e.g. 4o KHZ) and the clock generator 711 pulses with delivers a relatively lower repetition frequency (write clock, e.g. 8 KHZ), with the latter also as ZT signals (counter clock signals) to an input ZT of the central control unit 8 are fed.

Outputs ZE or y / 2 of the central control unit 8; at which the ZE or y / 2 signals appear are via an OR gate 513 with the start input of the clock 509, whose stop input is connected to the output of the comparison counter 507 is connected.

The output of the comparison counter 507 is also via a delay stage 515 on the one hand to an input VZA of the central control unit 8 and on the other hand Via an AND gate 517 and an OR gate 519 at the start input of the clock 511 connected. The other input of the AND gate 517 is at the output Q1 of a Flip-flop 521, whose clock input with the output y / 2 of the central control unit 8 and its output Q2 via a further AND gate 523 with the other input of the OR gate 519 is connected. The other input of the AND gate 523 is located at an output S of the storage device 7, of which the stored in the track 9 Synchronization signals are picked up.

The output of the comparison counter 507 is finally still with the Start input of the memory device 7 and via the delay stage 515 and a OR gate 525 connected to its reset input R.

The stop input of the memory device 7, the stop input of the clock generator 511 and the other input of the OR gate 525 are connected to the output of an address counter 527 connected. The address counter 527, a binary counter 529 and a shift register 531 are used to write the respective address. The input of the binary counter 529 is connected to the output ZE of the central control unit so that it can go through the CPU signals are each set to the address of the following information block will. Since his starting position is the number 1, he is by the after scanning The ZE signal appearing in the first line is set to the address of the second line, so that it is appended to the first information block.

Accordingly, the binary counter 529 becomes the last one by the ZE signal Line is set to the address of the first line, so that this is the last information block 703 is appended.

The binary counter 529 puts the set address in the shift register 531, from which it is transferred to the tracks by the clock signals coming from the clock generator 511 7 or 8 of the magnetic tape is transferred when an IDS element 533 from output Q2 of a flip-flop 535 is prepared accordingly. The input S2 of this flip-flop is via a delay stage 537 at the output ZS (counter stop) of the central Control unit, the input S1 on the other hand at the output of the address counter 527, which also at whose reset input.

The output of the AND gate 533 is also the input of the address counter 527 connected so that it counts those clocks that are the clock input of the shift register 531 can be supplied. The address counter is set to the number of bits that each address includes, for example, the number 9 or 10> if 500 or looo Halftone dots are to be addressed per line. By the one at the output of the address counter When the AE signal appears, the comparator 507 is also reset and the magnetic tape stopped.

The storage device 7 has one with the output y / 2 of the central Control unit 8 via a delay stage 539 connected input. This Entrance leads to a switch, not shown, which is activated when the first y / 2 signal the switchover from forward to reverse and when the second appears y / 2 signal causes the switchover from reverse to forward.

The outputs of shift registers 501 and 503 have two inputs the logic 6 connected. Further inputs of the logic are with the outputs ZS, y / 2 and ZE of the central control unit 8 connected. via the four outputs of the logic 6 become tracks 1, 3, 5 and 9 when moving forward and tracks 2, 4 when moving backward 6 and 6 of the magnetic tape 701.

Another input of the logic 6 is connected to an output UZ (odd Number of lines) of the central control unit 8. When a UZ signal appears a blank block 713 (Fig. 3) is recorded.

The logic 6 is used to the write heads of the memory device 7 to provide the signals required during the writing process or during the printing process from the storage device 7 information read out in to supply the buffer 5 in the necessary order and sequence.

That part of the logic 6 is shown schematically in FIG. 6 which is required for the enrollment process. The one needed for printing Part has a similar structure with opposite flow of information.

According to FIG. 6, an input of two OR gates 601 and 603 is included connected to one of the outputs of the shift registers 501 and 503. A different entrance each the OR gates 601, 603 are fed the output signals of an AND gate 605, one input at the output Q2 of a flip-flop 607 and the other input is at the output ZS of the central control unit. A third input of the OR gate 601 is connected to the output of an AND gate 609, one input of which is connected to the output Q7 of the flip-flop 607 and its other input to the output ZS of central control unit 8 is connected. The two inputs S1 and 52 of the flip-flop 607 are with the output ZE resp.

via a delay stage 611 with the output y / 2 of the central Control unit 8 connected.

The outputs of the AND gates 605 and 609 are at two inputs an OR gate 613, the third input of which via a delay stage 615 with connected to the output ZS of the central control unit 8 and its output is an inverter 617 is connected downstream.

The part of the logic 6 shown in FIG. 6 has four schematically indicated ones Outputs to which the tracks 1, 2 resp.

3,4 or 5,6 or 9 to be supplied Signalei in the correct order statically available and via gate circuits with the clock generator 511 (Fig. 5) developed write clock can be queried.

The delay stage 611 should ensure> that in the event that that a y / 2 signal appears, this compared to the one that appears almost simultaneously ZE signal is delayed by so much that the output Q2 of the flip-flop 607 is set will. The delay stage 615, on the other hand, must delay the ZS signal by exactly one clock, so when the ZS signal appears first in tracks 1 to 6 of the special characters ZE or y / 2 and then the special character A is recorded in the next measure. Simultaneously With the A-character, the synchronization character is written in track 9 during advance. The switchover to the various read or write heads takes place automatically with the respective switchover of the storage device 7 from forward to reverse or vice versa.

In Fig. 7 those parts of the buffer 5 are shown, which are needed for the printing process, again all unimportant parts are omitted.

In addition, for a better understanding of the information required for the printing process Part of the buffer 5 in Fig. 7 as one of that required for the scanning process Part shown in FIG. 5 independent system. Many of the components of the cache 5, e.g. the shift registers Sol and 503, can, however, both be used for scanning as can also be used when printing.

Contains the part of the buffer 5 required for the printing process as essential components four shift registers 551, 553, 555 and 557, which are preferably have the same number of memory cells as the shift registers 501 and 503. The information inputs of the shift registers 551 and 555 or 553 and 557 are respectively connected in parallel, but with the information inputs of the shift register 555 and 557 cine Information lock 559 is connected upstream. By the information lock 559 becomes the information inputs of the shift register 555 and 557 kept free of information at certain time intervals without the shift clock fed to the clock inputs is interrupted. The information inputs the shift registers are at the two information outputs of the logic 6, the during the reading process from the reading heads of the storage device 7, those on the magnetic tape 701 stored words are offered serially.

The part of the logic 6 required for the printing process is detailed not shown because it results from the functioning of the entire device and otherwise similar to the part shown in Fig. 6 with opposite flow of information is. In addition to the two information outputs at which the in color information stored in tracks 1, 3 and 2, respectively, appear, and a ZE output and a y / 2 output, at which signals appear when using the Read heads at the end of an information block 703 have a ZE character 705 or a y / 2 character 709 (see. Fig. 3a, b) is read out. The ZE output of the logic 6 is via an OR element 561 and an OR gate 562 connected downstream of this on the one hand with the stop input the memory device 7 and on the other hand with the start input of a clock 563 connected. The y / 2 output of the logic 6 on the one hand also leads to the OR gate 561 and on the other hand to an input of the memory device 7, which is connected to the switch to switch from flow to return or vice versa.

The clock inputs of the shift registers 551, 553 are connected to the input a comparison counter 565, which is based on the% eDl of the storage elements of the shift register is set, rm the output of an OR gate 567, the clock inputs of the visual register 555, 557 on the other hand with the input of a comparison counter corresponding to the comparison counter 565 569 at the exit an OR gate 571. At each input of the OR gates 567 and 571 is the output of the clock 563 (high-speed clock, e.g. 40 KHZ) and one AND gate 573 or 575 at each other input. One input each the AND gates 573, 575 is connected to an Ans output DT (printer clock) of the central Control unit 8. The other input of the AND gate 573 is at the output Q1 of a Flip-flop 577, the output Q2 of which is connected to the other input of the AND gate 575 is. The input S1 of the flip-flop 577 is connected to an output DE (end of print) Input S2 at an output RA (report connection) of the central control unit 8.

The third inputs of the OR gates 567, 571 are finally with connected to an output of the memory device 7, which sets the read strobe for tracks 1 to 6. This outcome is, for example, caused by a 'pulpy commercial' Magnetic tape devices usual circuit arrangement is always supplied with a clock signal, if the word just read from the magnetic tape 701 has at least one place binary '1'. Since according to the table given above in connection with FIG every word recorded on the magnetic tape 701, regardless of whether it is a Is a color or a special character, has a binary 1 at least in one place, is stored in the embodiment described here when reading out each Word generates a clock signal, whereas when reading out an empty block 713 (cf. Fig. 3) from the beginning of reading out the synchronization character in track 9 to Start of reading out the following synchronization character no clock signals on "rend-strobe" output can be generated. The magnetic tape 701 therefore runs during the Printing process at the beginning of the return over the empty block.

Another output ST (start) of the central control unit 8 is connected to one input of an OR gate 576, the output of which is the start input the storage device 7 leads.

The outputs of the comparison counters 565 and 569 are connected to the stop input of the clock 563 is connected so that it is activated by each VZD signal (see Fig. 4b) is stopped. In addition, these outputs are connected to the reset inputs of the two Comparison counter connected.

The information lock 559 has a start input that starts with a further output A of the comparison counter 569 is connected. This output A can-manual can be set to any value of the comparison counter 569 so that the Infoxmation lock 559 is switched on with any payment status. The information lock 559 is enabled again by each subsequent MZA signal preserved.

The outputs of the shift registers 551, 555 are via an OR gate 579, which the shift register 553, 557 via an OR gate 581 to the coding and Decoding unit 4 connected, from which the decoded information about the shift registers 11,12 are fed to the printer 9, which has the sample cartridge lo expressive.

The part of the intermediate memory 5 required for the printing process has in addition, a facility by means of dcr after setting the corresponding address any information block on the magnetic tape 701 was searched for can be.

This device contains a double key 583> the one hand the central control unit on "print" and on the other hand the magnetic tape drive set to run continuously. The signal appearing via a UNT) element 585 sets the Output Q2 of a flip-flop 587, the MaCnetbandantricb via the OR gate 576 switches on and leaves it switched on, even if the Logic 6 stop signals are fed to the stop input.

The desired address is set by means of a binary counter 589 the number of lines. A comparator 591 is connected to the binary counter, the information input of which is taken from an output A of the memory device 7 Address bits are supplied. An address counter 593 is also provided Output with its own reset input R, the reset input R of the comparator 591 and the input S1 of a flip-flop 595 is connected.

The address counter 593 is set to the number of bits per address.

The clock inputs of the comparator 591 and the address counter 593 clock signals are fed via an AND gate 597, if this is via the output Q2 of the flip-flop 595 is prepared. The input S2 of the flip-flop has an output A connected to the logic 6, via which the A signals are supplied. The other entrance the AND gate 597 is connected to an output B of the memory device 7, which is taken as clock pulses of the "read strobe" of tracks 7 and 8.

The operation of this device is as follows. After hiring a certain address in the bin blocker 589 and after setting the flip-flops 587 and 595 on the outputs Ql the key 583 is actuated, whereby the magnetic tape drive is started. The magnetic tape can be in any position when starting are located. The AND gate 597 is prepared with the trailing edge of each A signal, so that the subsequent "read-strobe" pulses are those announced by the A signal Shift address into comparator 591. If this pure identity with the im Binhrzähler 589 indicates standing address, are by the last clock pulse from Output B of the address counter 5as, the comparator 591 and the flip-flop 595 are reset.

When the next A-signal appears, the same processes take place away. Identified by the comparator 591 when the desired address is reached detected, then the magnetic tape is stopped via its output and the flip-flop 587, which ends the search. Since the address of an information block 703 is located at the end of the previous information block the read / write heads of the memory device 7 now immediately before the addressed Information block, so that the buffer 5 is switched to "scanning" and a new line can be scanned and stored.

The central control unit is described below with reference to FIGS. 8, 8a and 8b 8 described, which controls the timing of all processes that occur when scanning and printing or storing or reading the information into or from the Play memory device 7. The central control unit 8 thus does not include only all devices for generating the various start-stop, clock and synchronization signals, but also those facilities that allow adaptation to different sized artist drawings 1, sample cartridges' lo or halftone dot sizes are required.

The central control unit 8 contains the stepper motor as essential parts 107 for driving the slide 1o in the Y direction and the synchronous motor 1o9 for the drive of the drum 101 in the X direction (cf. also FIG. 2). The stepper motor 10'7 are a Y raster dimension counter 801 (hereinafter referred to as YRMZ counter) and a Y raster point counter 802 (hereinafter referred to as the YRZ counter). With the YRMZ counter you can the size of a scanning or printing point in the Y direction, with the YRZ counter 802 on the other hand, adjust the number of grid points of the artist's drawing in the Y-direction. The synchronous motor 109 that transports the artist's drawing respectively. Cartridge caused in the X-direction are accordingly a YRMZ counter 803 (X-raster-measure-counter) and an XRZ counter 804 (X halftone dot counter).

The various signals fed to the counters or motors are derived from a common square wave generator 805. The generator 805 is over a frequency converter 807 is connected to the synchronous motor 109. Between the generator 805 and the frequency converter 807 is on when a "Scan" key 809 is pressed 2: 1 divider 811 and, when a "Print" button 810 is pressed, an additional 5: 1 divider 812 switched. This has the consequence that the drum 1o1 during the scanning process with a larger Speed than is driven during the printing process. Between the two dividers 811 and 812 and the frequency converter 807 are also two AND gates 813 and 814 and an OR gate 816 switched.

The drum lol is completely made by the synchronous motor 1o9; driven.

For scanning the artist's drawing 1 or for printing the master cartridge 1o in the X direction, a scanning cycle or a printer cycle are derived from the generator Ro9. For this purpose, the Generntor 809 is via a 2: 1 divider 817 with the input E of the XRMZ counter 803 connected, the output A on the one hand directly to one input of an AND gate 819 and on the other hand via a 5s1 divider 821 with one input of an AND element 823 is connected. The other input of the AND gate 819 is with the key "scanning" 809, the other input of the AND gate 823 is connected to the "Print" 810 button. The outputs of the AND gates 819 and 823 lead to two connection terminals AU (sampling cycle) and DT (printer clock), which are arranged on a connector plate 825.

The divider 817 is enabled or disabled by an enable circuit 827. locked. The release takes place via an AND element 829, one input of which is via a delay stage 831 a general start button 833 is connected, whereas its other input is connected to the scanning device 121 (see FIG. 2). The start button 833 also leads via an OR gate 837 to a connection terminal ST (start), the output of the scanning device 121 on the other hand to a connection terminal MZA (mechanical line start).

The blocking of the divider 817 takes place via an OR gate 839, whose one input is connected to the output of an AND gate 841, one of which Input to the "Scan" key 809 and its other input to output A of the XRZ counter 804 leads. The output of a Tfl) element is connected to the other input of the OR element 839 843 connected, one input with the "Print" button 810 and the other Input is connected to a terminal DE (pressure end).

The AND gates 819 and 823 are via an OR gate 845 with the input E of the XRZ counter 804, the reset input R of which via an OR gate 847 is connected to the output A of the XRZ counter 8o4 and the terminal DE. Of the The output of the XRZ counter 804 is also connected to the input of a circuit 850, hereinafter referred to as "X-Test" and later with reference to Fig.

8b will be described in more detail.

In addition, the signals appearing at the output of the XRZ counter 804 via an OR gate 851 to the reset input of the XRMZ counter 803, the one input an AND gate 853 and 854 and finally the input S2 of a flip-flop 855 fed, The output Q2 of the flip-flop 855 leads together with a Output B of the XRZ counter 804 via an AND gate 857 either to the connection terminal DE or via the OR gate 837 to the connection terminal ST. The S1 input of the flip-flop 855 is connected to terminal MZA, which is also connected to input S1 of a flip-flop 859 is connected, the Ans gang Ql with the other. Input of the IJND link 853 is connected, the output of which to a connection terminal ZE (end of line), for Input E of the YRZ counter 802, on the one hand an input of an AND gate 861 and finally leads to one input of an AND element 863, the other input to the key 809 is connected. The output Q2 of the flip-flop 859 is on the one hand with the one Input of an AND gate 865, the output of which via the OR gate 84-5 to the input E of the XRZ counter 804 leads and its other input to a connection terminal ZU (counter clock) is connected, and on the other hand with the other input of the AND gate 854 connected, the output of which is led to a connection terminal ZS (counter stop).

The other input of the AND gate 861 is with the button "Print" 804 connected. Its output leads to a terminal RA (rapport connection). The input S2 of the flip-flop 859 is connected to a terminal VZA (comparison counter sampling) tied together.

The stepping motor 107 is driven by the generator 805 a 2: 1 divider 868, a 64l1 divider 869 connected downstream of this, and a second divider 869 downstream memory counter 871, whose output A also has its reset input R is connected. The divider 869, which also sends its output signals to the input E of the YRMZ counter 801 supplies is temporarily released by an enable circuit 873 respectively.

locked. The release takes place on the one hand via the output Ow1 of a Flip-flop 875, which is connected to one input of an AND gate 877, and on the other hand via a delay stage 879 that with the other Input of AND gate 877 is connected. The input of delay stage 879 is connected to an OR gate 881, at whose inputs the AND gates 843 and 863 respectively. The blocking of the divider 869 and the resetting of the YRMZ counter 801 take place via the output A of the YRMZ counter 801.

The YRZ counter 802 has three outputs, one output y / 2, which is decoded to half the number of lines in the artist's drawing 1, has an output B, which is decoded to the limit switch-off, and an output UZ (odd number of lines), the meaning of which will be explained later with reference to FIG. 8a.

The output y / 2 is connected to a connection terminal y / 2 of the connection plate 825, with the input E of a counter 883 and with the reset input R of the YRZ counter 802 connected. The output of the counter 883 leads together with the key 810 and the output B of the YRZ counter 802 to the three inputs of an AND gate 885, the Output on the one hand via an OR gate 887 and a delay stage 889 to a Terminal E (limit switch-off) and on the other hand only via the OR gate 887 leads to the reset input R of the counter 883 and to input S1 of a flip-flop 891, whose input S2 is connected to the 833 key. The output Q2 of flip-flop 891 is connected to one input each of the AND gates 813 and 814. In addition, the Output A of counter 883 together with key 8o9 to the two inputs of one AND gate 893, which is connected to the other input of the OR gate 887.

The output UZ of the YRZ counter is connected to the input S2 of the flip-flop 875 and connected to a terminal UZ (odd number of lines). The YRZ counter also has an MZA input that is connected to the MZA terminal is.

The YR7 counter 802 shown again schematically in FIG. 8a is structured in such a way that, if the number of lines is even, it can be read after scanning or printing the line y / 2 a first y / 2 signal and a second after scanning or printing the last line y / 2 signal generated. It differs from other counters in that it does not up to the set number, but twice up to half the set number counts up. In order to achieve this, the individual decades can be decoded in a special way (Möbiusrin;) can be chosen. The further functionality of the YRZ counter 802 results from the equivalent circuit diagram of FIG. 8a.

When preselecting an even number, key 8023 is not pressed, whereby a flip-flop 8025 connected downstream of the AND gate 8021, the output of which is Q2 is connected to the output UZ, remains set permanently on its output Ql. For example, if the counter is set to the number "20", the counting cycle is set to "1" starts, then the YRZ counter is incremented by the one that appears after the first line has been scanned ZE signal set to number "2". At the end of the scan the lo.

Line becomes the YRZ counter, because it is decoded at "10" under delivery of a y / 2 signal is set back to the number "1" so that it starts counting again and reset after the 20th line has been scanned with the output of the second y / 2 signal will.

The YRZ counter 802 is also decoded in such a way that it is at Setting to an odd number of lines counts up twice up to the number y / 2 + 1/2. aside from that If it is set to an odd number of lines, it is at one input of the TDTD element 8021 a "1" nn because the key 8023 was pressed; is. This has the consequence that the After scanning the line y / 2 + 1/2, the counter again changes over the scanning period the next line extending y / 2 signal emits that nber also through the y / 2 signal set the flip-flop 8025 at its output Q2 will, so that a "1" is present at output UZ for the duration of the entire next line.

Assume that the YRZ counter is set to the number "21", whereby the key 8023 is automatically pressed. In this case the YRZ counter is decoded not at 10.5, but at y / 2 + 1/2 = 11. As a result, initially 11 full lines of the artist's drawing scanned before the y / 2 signal appears, by which the storage device 7 is switched from forward to reverse.

With the UZ signal appearing at the same time as the y / 2 signal, 8 the flip-flop 875 is set on its input Q2, so that this is also done simultaneously with the y / 2 signal appearing ZE signal, which via the delay stage 879 is delayed, does not reach the enable circuit 873. Since the UZ signal is only disappears when the next ZE signal appears together with the y / 2 signal, this process cannot be disturbed by an MZA signal appearing in between will. According to FIG. 5, the UZ signal is also fed to the logic 6 in order to rescanning the 11th line made any recordings on the magnetic tape 701, which corresponds to the recording of an empty block.

The consequence of this is that after the 11th line has been scanned, the stepper motor 107 once not started and the 11th

Line is scanned again.

Because of this configuration of the YRZ counter 802 xv, the second If the number of lines is odd, the y / 2 signal is only generated at the end of the 22nd line. Because of the double sampling of the 11th

However, this corresponds to the scanning of exactly 21 lines which the YRZ counter 802 is set.

When printing, the. essentially the same processes take place, i.e. when the UZ signal appears, as shown in Fig. 8, for the duration of a line on the one hand the feed and on the other hand through a connection to the storage device 7 (see. Fig. 7) block the further transport of the magnetic tape. However, there is also the option of using a completely normal YRZ counter when printing to be used because the empty block cannot be switched from forward to backward and backward a new tape start would bypass the read heads ineffectively until the next one Information block is read out without another tape stop. The YRZ counter 802 decides thus essentially only whether an empty block 703 has been recorded on the magnetic tape 701 should be or not.

The circuit X-Test 850 is shown schematically in FIG. 8b. Her According to FIG. 8, inputs are connected to the outputs of the XRZ counter 804 or the sampling device 123 connected. The output of the XRZ counter 804 leads to an input of AND gates each 8501 and 8503 and via an inverter 8505 to one input of an AND element 85o7. The outputs of the AND gates are connected to the inputs S2 of a flip-flop 85o9, 8511 and 8513 connected. The outputs Q2 of these Fli? FZops lead to lamps 8515, 8517 and 8519. The output Q2 of the flip-flop 8509 is via an inverter 8521 with an input of the TlND element 8507 and, like the output Q2 of the flip-flop 8511, via an OR gate 8523 and a reversing stage 8525 with an input of the AND gate 8504 connected. Between the scanning device 123 and one input of the AND gate 8501 is also an inverter 8527. The inputs 51 of the flip-flops are with the connection terminal MZA connected.

The circuit X-Test 85o is to ensure that the sampling of a Artist's drawing 1 begins exactly at the beginning of the desired line or at the desired End of line is ended. The exact start at the beginning of the line is made during the scanning process guaranteed by the MZA signal after the marking with the drum at rest lol 117 (Fig. 2) has been precisely set. Whether the scanning is exactly through the marker 119 (Fig. 2) ends certain line end depends on the setting of the XRMZ counter 803, because the number of halftone dots per line, which by the XRZ-Zhfhler 804 is set, from the outset by the desired report or the desired number of points per line has been added. Using the XRMZ counter 803 must therefore be the width of a raster point in the line direction before the start of the scan can be set so that the total width of all raster points is exactly one line length is equivalent to.

Since the XRMZ counter 803 can be set very precisely, it is initially approximate calculates the value to which it should be set. Then the drum lol set in motion by pressing the start button 833 (Fig. 8).

The Y stepper motor 107 can remain switched on or switched off will.

After the arrival of an MZA signal (-cf. Fig. 8) that all flip-flops in Fig. 8b is set to its output Ql, in conjunction with the "Scan" key 809 the divider 817 is released, whereby the XRMZ counter 8o3 begins to count.

When the set number is reached, the XRZ counter is .o4 iun one step further, which means that the crst raster point is scanned is. After scanning all the raster points set by the XRZ counter 804, appears at output A of the XRZ counter 804 with the correct setting of the XRMZ counter 803 exactly at the same time as the MZE signal of the same length from the scanning device 123 Signal. Appear both signals at the same time, then it lights up Lamp 8519 comes on because dns flip-flop 8519 is set at the beginning of Q2. The two lamps On the other hand, 8515 and 8517 do not light up because the AND element 8507 and the AND element 8501 no signal for the duration of the MZE signal aflf lets the associated flip-flops through.

If the XRZ signal appears before the MZE signal, the lamp lights up 8515, because before the MZE signal appears nn both inputs of the AND element 8501 a "1" is pending.

The other two lamps don't light theirs because the flip flops are set with the backflow of impulses and when they appear Flanks, the flip-flop 8509 is already set, so that the AND gates 8507 and 8503 an "O" is present when the MZE signal arrives. Something like that applies in the event that the XRZ signal arrives later than the MZE signal. In this In this case, only lamp 8517 lights up. When lamp 8515 lights up, the width must be measured of each grid point can be increased by a small amount, so through Setting of the XRMZ counter 8o3 to a larger number of XRZ signals a little later appears. Conversely, the XRMZ counter 803 must be set to a smaller number when the 8517 lamp lights up. Depending on the fainer the XRMZ counter is adjustable, The appearance of the XRZ signal can be closer to the appearance of the MZE signal be adjusted, ideally even hls to a value smaller than the width of the signals M7.E resp.

XRZ is.

A Y-test corresponding to the X-test is in the case of the invention Device not absolutely necessary. When putting the device into operation, first the Abtantkopf 2 on the first line of the clamped on the drum lol Artist's drawing 1 set. Then the YRMZ counter 801 is set to the calculated number and the central control unit is in operation when the synchronous motor 109 is switched off taken. As a result, in a test run, the slide is pulled over the last line the artist's drawing. If the YRMZ counter is set correctly, remains the scanning head is exactly above the last line. If not, then test runs are carried out again with the YRMZ counter 801 changed, until the set number is correct.

In contrast to the X test, the Y test can be carried out with the drum at rest lol so that an automatically operating device is unnecessary for him. I) ie precise visual adjustment to a specific point on the drum surface facilitated by an eyepiece with cross hairs and a circle surrounding the cross hairs, where the circle visible in the eyepiece is exactly that area of the drum visible made which of the optics of the scanning head it is detected.

The setting of the grid dimension can be done with the help of the memory counter 871 and the YRMZ counter 801 are made extremely precisely. The memory counter avoids an addition of the unavoidable due to the setting of the YRMZ counter 801 Error per raster point, so that the total error after each Y feed made remains smaller than one motor step. One motor step corresponds to one feed of the carriage 105 of 0.05 mm, then the total error is somewhere the artist's drawing 1 is always smaller than 0.05 mm. The memory counter 871 can be fixed set or adjustable. When using an adjustable memory counter 871, the YRMZ counter 801 can be permanently set.

The mode of operation is described below with reference to FIGS. 4a, 5, 6 and 8 the essential for the scanning of an artist's drawing 1 part of the invention Device described.

After performing the X and Y tests and the associated setting the various counters are initially activated by pressing a button (not shown) Clear button set all flip-flops to their output Q1. Then be by pressing the "scanning" key 809, the AND gates 813, 841, 863, 893 and 819 prepared. The scanning process then runs when the start button 833 is pressed fully automatically.

By pressing the start button 833, the AND gate 813 turns on prepared so that the synchronous motor 109 the drum lol with the scanning speed drives. At the same time, the start signal is given by the delay stage 831 long delayed until the drum lol reaches its full rotation and synchronicity Has. Only then is the AND element 829 prepared in such a way that when it arrives of the next MZA signal the divider 817 is enabled. After the release will be the clocks of the divider 817 supplied to the XRMZ counter 803, from whose output the Sampling clock is picked up via the connection terminal AT. The sampling clocks are according to Fig. 5 shows the clock inputs of the shift registers 501 and 503 and the comparison counter 507 and fed to the XRZ counter 804 according to FIG. This means that the and decoding unit 4 formed words (color information) of a line in the shift register pushed, whereby phase A in Fig. 4a is ended.

When all points of a line have been scanned, appears at the output of the XRZ counter 8c4 a signal which, on the one hand, via the AND gate 853 as a ZE signal of logic 6 (Fig. 6) and on the other hand the start input of the clock 509 (Fig. 5) is supplied. As a result, the values in shift registers 501 and 503 located information blocks at high speed to the end of the shift register 501, 503 shifted, while on the other hand the sampling clock via the AND gate 841 (Fig. 8) is blocked.

When the information block by the high speed clock to the end of the shift register 501 and 503 is shifted, a VZA signal appears at the output of the comparison counter 507, which delays the clock generator 511 switches on the flip-flop 859 at the output Q2 continues. In addition, the VZA signal switches off the clock 509 without delay and the magnetic tape drive of the storage device 7. When the magnetic tape is full Speed, the clock signals of the clock generator 511 are used to the information about the logic located in shift registers 501 and 503 6 to be recorded on the magnetic tape. At the same time, these clock signals are transmitted via the Terminal ZT fed to the input of the XRZ counter.

The setting of the flip-flop caused by the ZE pulse has an effect 855 does not go off because the signal appearing at output 33 of the XRZ counter 8o4 is only a reset of the counter 804 during the printing process via the terminal DE has the consequence. By setting the flip-flop 8/9 to its output Q2, this becomes next signal from XRZ counter 804 indicating that all color information are recorded on the magnetic tape, via the AND gate 854 on the one hand of the logic 6 and on the other hand to the flip-flop 535 supplied.

As is apparent from Fig. 6, the ZS signal causes dnß dns in the previous one Counting cycle of the XRZ counter 804 in the flip-flop 607 stored ZE signal to the just the recorded information block is appended. If this tact past is, the flip-flop 535 is set via the delay stage 537, so that now the clock signals of the clock generator 511 via the AND gate 533 to the clock inputs of the Slider 531 and the address counter 527 are supplied. The binary counter 529 is at this time: on the address for the second information block, because it has been advanced by one cycle by the previously published ZE signal is. When the address is finished, the address counter 527 gives that AE signal, which switches off the magnetic tape drive, switches off the clock generator 511 and the comparison counter 507 and the binary counter 527 resets. Also will the AE signal sets the flip-flop 535 back to the output Q1. Through this Is the end of phase B (Fig. 4a) reached.

By doing the first counting cycle of the XRZ counter 804 during the phase A delivered ZE signal is independent of the recording process just described 8, the clock of the divider 869 is also released with a slight delay by which the stepping motor 107 advances just as many steps is that the carriage 105 with the scanning head 2 is now above the second line the artist's drawing is located. The blocking of the clock signals of the clock generator 869 takes place; after reaching this position via the YRMZ counter 801.

After completion of phase C, the next MZA signal appears through which the XRZ counter 804 is reset again and the flip-flops 859, 855 and 875 can be set to their output Q1. In addition, the AND gate 829 is used again the sampling cycle enabled.

The processes described are now repeated so often at first until the YRZ counter 802 emits the first y / 2 signal. This y / 2 signal becomes then stored instead of the ZE signal in flip-flop 607 (Fig. 6) and instead of the ZE mark is recorded on the magnetic tape 701. In addition, the y / 2 signal according to FIG. 5 for switching the storage device 7 from forward to reverse used. However, this switchover takes place with the aid of the delay stage 539 only when the last recorded information block still contains the address has been provided for the next information block. Play while running back the processes described are then carried out again in cyclical order, whereby However, it should be noted that the track 9 of the magnetic tape is read. this has As a result, the information blocks do not appear when the VZA signals are recorded, but only when at the output 5 of the storage device 7 a synchronization signal appears that via the AND gate 523 the start of the Clock 511 causes. The AND gate 523 is namely by the y / 2 signal instead of AND gate 517 has been prepared.

After scanning the last line of the artist's drawing 1 appears at the output of the YRMZ counter 802 a second y / 2 signal, which in addition to the Processes that the first; y / 2 signal initiates, causes that at the output of the the number 2 set counter 883 a signal appears, which via the OR gate 887 and the delay stage 889 are fed to a limit switch (not shown) will. The delay stage 889 is set so that although the address for the first information block is still recorded, but the Magnetic tape can take place in the forward direction. In addition, the signal of the Counter 883 is used to reset flip-flop 891, which causes the synchronous motor 1o9 is stopped.

All of the information blocks are now on the magnetic tape 701 as shown in FIG 703 recorded in the manner of an endless loop, so that the magnetic tape through alternating Switching from forward to reverse or vice versa can be read out as often as required. without losing time to rewind the magnetic tape. This kind of Recording on magnetic tape also has significant advantages over use a magnetic tape glued together in an endless loop, because the lungs of a such an endless loop depend on the number of information blocks to be recorded vnirde, if not between the last recorded and the first recorded Too large a gap should arise in the information block.

The information recorded on the magnetic tape can now be used with The help of suitable facilities for the direct creation of a tax strip or used for direct control of a machine 13 (Fig. 1), as is is described in a parallel registration dated the same day, to which hereby expressly Is referred to.

A particular advantage of the invention is that the stored Information is first read out and using the device described so far can be printed out to a sample cartridge 10. This can not only determine whether the stored information actually corresponds to the desired pattern to lead. Rather, the sample cartridge can also be used line by line or completely for as long corrected until the stored information is exactly what you want Pattern match. Another major advantage is that the machine 13 is controlled with the magnetic tape 701 before a control strip is produced can be. If it is a knitting machine, the customer can use a sample product Manufacture and check this before finally going to manufacture the tax strip resolves.

The printing process is described below with reference to FIGS. 4b, 7 and 8. He starts again by doing an X and Y test and using a Clear button all flip-flops are set to the output Ql or the information lock 559 is switched to pass. By pressing the "Print" button 810 the AND gates 843, 814, 885, 823, 857 and 861 are prepared. After subsequent When the start button 835 is actuated, the drum lol begins, as in the scanning process TO rotate, but with one caused by the divider 812., in a ratio of 5: 1 smaller Speed, because this is more advantageous for reasons of printing accuracy. aside from that the AND gate 823 is prepared by the key 810, so that the one at the terminal DT appearing printer clock has a frequency that is 5: 1 lower.

By pressing the button 833, the magnetic tape drive is shown in FIG. 7 started. As a result, the words are controlled by the "read-strobe" cycle of the first information block is shifted into the shift registers 551, 553, 555 and 557. The comparison counter 569 can be decoded to any number at its output A will.

The set number determines how many grid points of each line should be appended again to the endciner of each line (Report following in line direction). In the following it is assumed that the comparator 569 is set to the number m = 20. This has the consequence that after the registered mail of the first 20 words in the shift registers 555 and 557, the lock 559 becomes effective, so that no further information is entered into these shift registers can.

However, the lock 559 does not prevent these 20 words by the "read-strobef" clock in parallel to the first 20 words in the shift registers 551 and 553 can be pushed further.

After reading out an information block 703 from the magnetic tape, appears at the output ZE of the logic 6 a ZE signal, which on the one hand the magnetic tape drive turns off and on the other hand turns on the clock 563, so that the in the shift registers information located now in high speed up to the end of the shift register be pushed. When the end of the shift register is reached, the comparison counters give 565 and 569 a VZD-Sig; -nal, by which the clock 563 is switched off and the Comparison counter must be reset. This means that phase D (see Fig. 4b) closed.

Phase F is initiated by an MZA signal, whichever in the central control unit 8 of the divider 817 is released, so that the output signals of the XRMZ counter 803 appear as printer clocks at the connection terminal DT. These Printer clocks are initially assigned to the AND gate 573 as the clock inputs of the shift register 551 and 553 because (lnr AND gate 575 through the output Q2 of the flip-flop 577 not prepared. Pls result from this being the one full line first information from the shift registers corresponding to the sample cartridge to be produced 551 and 553 pushed out and over the coding and decoding unit 4 to the printer 9 forwarded. The printer clocks are stored in the XRZ counter 804 of the central control unit 8 with counted.

If. the set number of this counter is reached, however the printer cycle is not blocked, as is the case with the scanning process, because the AND gate 841 the "Print" button 810 is not connected. By the output signal of the XRZ counter 804 is rather generated via the AND gate 861 ei RA signal which according to FIG. 7 sets the flip-flop 577 to output Q2 so that the printer clocks are now over the AND gate 575 are fed to the shift registers 555 and 557. This will be the first 20 points of the line just printed out immediately afterwards the end of this line is reprinted.

The counter 804 begins to count again because it is through The output signal has been reset, but the printer clocks do not continue. Its output signal also sets flip-flop 855 to output Q2 so that the AND gate 857 is now prepared. Through this AND gate 857 is when the XRZ counter 804 reaches the number set at its output B, emitted a signal which, on the one hand, starts a new magnetic tape as a St signal causes and on the other hand, both an AND gate 843 is reached via the terminal DE, and the flip-flop 577 according to FIG. 7 resets to the output Q #. There the other Input of the AND gate 843 is prepared by the "Print" button 810, arrives the DE signal via the delay stage 879 to the release circuit, v.rodurch as in the scanning process, a transport of the carriage 105 by one grid point in FIG Y-direction is effected0 In addition, the D: signal is received via the AND gate 843 the enable circuit 827, whereby the printer act is disabled. Finally effected the DE signal resets the XRMZ and XRZ counters. This is the end the phase F (Fig. 4b) is reached.

The output B of the XRZ counter 804 can, if the different colored Printer pens 108 (Fig. 2) are arranged so that when they are actuated they all print on the same point, also set to the number 20, because in in this case, the printing of a full line is finished when the 20th point of the Line has been printed out for the second time. According to the invention, however, to a-higher To achieve printing speed, a printer uses its different colored Printer pens are spaced from each other by 24 grid points. With four-colored Therefore, three printer pens 108 are provided, with the two outer printer pens are spaced apart by 48 grid points. The fourth color is the color of the backing of the cartridge so that this color does not need to be specially printed out. It follows that the appearing at the output of the coding and decoding unit 4 Signals through delay stages, for example shift registers 11 and 12, have to be offset against each other by as many printer cycles as the printer pens 108 of the printer are spaced apart. Since the maximum delay is 48 printer cycles is, therefore, the printer cycle must not already be when the XRZ counter is set 804 from B 3 20, but only ended at a position of B = 68, so the information shifted through the shift registers 11 and 12 is also still printed out will. The fact that the shifting printer clocks temporarily on empty shift registers 555 1md 557 have no effect, because this only pushes out words "00" are assigned to the color 4 and thus the color of the base of the sample cartridge lo are.

After the DE signal appears, the magnetic tape 701 becomes again started to read out the next information block. This is followed by in the processes already described in a periodic order until the end of the first half of the information blocks a y / 2 signal appears, through which a Switching from forward to reverse is effected.

After printing the last line of the sample cartridge also takes place a repeat connection takes place in the Y-direction of the sample cartridge. This rapport connection is' set by the YRZ counter at output B. For example, it is possible after all lines of the original artist's drawing 1 have been printed out to print out the first n = 20 lines once with a line report.

In this case, the output B of the YRZ counter 802 is set to 20.

Therefore, when the second y / 2 signal is output from the counter 883 In contrast to the scanning process, no E signal has yet been generated. The DE signal, which is delivered after the last block of information has been printed out, rather leads a new start of the magnetic tape in the forward direction. After reading out again and printing out the first 20 stored information blocks leaves the AND gate 885, which is already through the static output signal of the counter 883 and the "Print" key 810 is prepared, the coming from output B of the XRZ counter 802 Signal as an E signal cause the entire device to shut down.

The particular advantage of the facility used for printing consists in the fact that the artist's drawing, although drawn without a repeat connection will with Report connection can be printed out. The designer can therefore not only make any corrections to the report himself, but also determine whether the repeat connections in the X or T direction are correct and make corrections if necessary.

The invention is not restricted to the exemplary embodiment described, because there are numerous possible variations. For example, it is possible to use the To omit intermediate storage and to write directly to the magnetic tape 701 when scanning or to control the printer 9 directly from the magnetic tape 701 when printing. The advantage of the buffer memory is that with different sampling or Printing speeds can be worked and that the scanning or printing speed is completely independent of the prescribed belt speed. Through this it becomes possible without difficulty to create grid points with edge lengths between o, 6 and 3.0 mm to be removed or printed. Since, in addition, all the operations of the unanimous Clock 805 are controlled, there are no synchronization problems.

It is also possible to play with the Ausführungsbei described thereby deviating from the selected sequence of scanning-fin-storage-printing of the overall report, that worked with two drums 101 and the sequence scanning-storing-printing is selected for each individual line.

However, this would require the read or write heads of the Storage device 7 to be arranged in such a way that both the forward and the reverse the writing heads are arranged in front of the Besekeads and consequently the stored ones Information can be read out again immediately. For this embodiment could either be a sufficiently large part on the drum used for scanning left blank to allow printing, or both drums could be pro Reverse line twice, taking during the first Rotation is scanned and printed during the second rotation. Here could both the scanning head and the printer on the same drum and even on the same rails 103 or be arranged on the same carriage 1o5 because of the Feed would only have to take place every two revolutions.

Instead of the magnetic tape memory 7, other types of memory can also be used can be used. However, the magnetic tape memory has the advantage that it is relatively is cheap and that the information blocks, as long as they are small reports, need not necessarily be addressed.

When choosing a different memory, make sure that the Access time to the individual information blocks remains small. Should the memory for example for direct control of an electronically controllable knitting machine are used, then at no point in time may the search for and readout of a Information or a block of information take so long that the continuous The knitting cycle of around looo Hz cannot be maintained.

If e.g. a magnetic tape becomes continuous, i.e. not in the form of an endless loop then the magnetic tape would have to be after the last block of information has been read out be rewound to read out the first information block again, which is very takes a lot of time, especially when it comes to reports with a large number is about lines and each line becomes a block of information of about loo milliseconds Duration leads.

In addition to magnetic tape stores of the type described are therefore in particular such disk or drum storage is suitable, one for each groove or track Read or write head own. Also a core memory with a Matrix of Soox5oo or more would be conceivable if care is taken to ensure that the stored Information is retained when switching off.

According to a further embodiment, instead of the line-by-line Recording - a point-by-point recording can be made using the magnetic tape is started and stopped for each point. This is particularly the case small repeats and enables them to be corrected point by point.

The invention is also not directed to point-by-point control of printer pens 108 is limited. Rather, devices can preferably be provided be, by means of which the printer pen (s) against the original for so long be pressed as the color to be printed remains unchanged, so that a sticky recording results.

The report connection can also be made with just one slide register whose information output is connected to the information input, so that the information is pushed all around. To print the In this case, the first m of information between two printer cycles is the report pushed forward at high speed.

The information blocks can also be stored in other storage facilities, e.g. disk or drum storage, recorded in the form of an endless loop by initially only the tracks 1,3,5 ... y and then, for example the tracks y-1, y-3 ... 4,2 are written.

The device described can finally be used for any number Expand colors by keeping the same number of tracks on the magnetic tape Any number of endless loops can be formed, e.g. for three colors each contain. In these cases, however, there are several scanning and printing cycles necessary.

Claims (26)

Patent Claims 1) Device for scanning and / or printing a template containing a scanning and / or printer head, a drum as a carrier of the original and a Device by means of which one in two mutually perpendicular directions Relative movement between the scanning or printer head and the drum can be produced is characterized by a at continuous. Rotation of drum (101) clock generator (817) that can be switched on and off for generating a scanning and / or printer clock (AT, DU) and a clock generator (869) that can be switched on and off for controlling a transporting the scanning or printer head (2 or 9) in the axial direction (Y) of the drum Motors (1o7). 2) Device according to claim 1, characterized in that the scanning head (2) and the printer head (9) are mounted on the same drum (101). 3) Device according to claim 1 or 2, characterized in that the printer head (9) and the scanning head (2) optionally on the same carriage (105) the drum (plumb bob) are mounted. 4) Device according to claim 3, characterized in that between the scanning device (2) and the printer (9) have a storage device (7) for intermediate storage the electrical scanning signals is provided. 5) Device according to one of Claims 1 to 4, characterized in that that during the printing or scanning process the template (1> Io) is so on the drum circumference is stretched that part of the drum circumference remains free. 6) Device according to claim 5, characterized in that a device (107, 801, 869, 871, 873) is provided, by means of which the carriage (105) always can then be transported in the axis direction (y) of the drum (ion) if the uncovered Part of the drum circumference wanders past the scanning device (2) or the printer (9). 7) Device according to one of claims 1 to 6, characterized in that that a printer (9) with printer pens spaced apart in the circumferential direction (Y) of the drum (101) (106) is provided. 8) Device according to one of claims 1 to 7, characterized in that that the drive of the drum (101) can be adjusted to different speeds. 9) Device according to one of claims 1 to 8, characterized in that that means (801, 803) are provided by means of which the size of the or points to be printed out in the axial direction (Y) and in the circumferential direction (X) of the drum (101) can be determined. lo) Device according to one of claims 1 to 9, characterized in that that devices (802, 804) are provided, by means of which the number of to be scanned or points to be printed out in the axial direction (Y) and in the circumferential direction (X) of the drum (lol) is definable. Device according to claim 9 or lo, characterized in that one Device (850) for visual control of the set point size in the circumferential direction (X) of the drum (101) is provided. 12) Device according to one of claims 1 to 11, characterized in that that a synchronous motor (1o9) to rotate the drum (101) and to transport the A stepping motor (109) is provided for the carriage (105). 13) Device according to one of claims 1 to 12, characterized by a common pulse generator (8o5), all of which are used to produce the Scanning or printer cycle, the drum drive (109) and the motor drive (107) required signals can be derived. 14) Device according to one of claims 1 to 13, characterized in that that for switching the clock generator (817) on and off an enable circuit (827) is provided, which can be switched on by an electrical signal (MZA) and. by an adjustable XRZ counter (804) that counts the scanning or printer cycles can be switched off is. 15) Apparatus according to claim 14, characterized in that for Change of the repetition frequency of the scanning or printer clock in the clock generator (817) downstream, adjustable XRMZ counter (803) is provided. 16) Device according to claim 14 or 15, characterized in that that the signal (MZA) can be derived from a marking (117) on the drum (101). 17) Device according to one of claims 1 to 16, characterized in that that for switching the clock generator (869) on and off an enable circuit (873) is provided, which can be switched on and through by an electrical signal (ZE) a YEMZ counter (801) can be switched off, which counts the pulses fed to the motor (107) selects. 18) Apparatus according to claim 17, characterized in that the Signal (ZE) can be derived from the counter (8o4) counting the scanning or printer cycles is. 19) Device according to claim 17 or 18, characterized in that that to change the repetition frequency of the pulses fed to the motor (107) the counter (801) is adjustable. 20) Device according to claim 17 or 18, characterized in that that a memory counter (871) is connected between the clock generator (869) and the motor (107) is. 21) Apparatus according to claim 20, characterized in that for Change of the repetition frequency of the memory counter pulses fed to the motor (107) (871) is adjustable. 22) Device according to one of Claims 1 to 21, characterized in that that a device (850) for visual control of the set repetition frequency the scanning and / or printer clock is provided. 23) Apparatus according to claim 12, characterized in that the Control device (850) from the signals developed by the XRZ counter (804) and from a signal (MZE) developed by a marking (119) on the drum (ion) is controllable. 24) Device according to claim 22 or 23, characterized in that that the control device (85o) has free lamps (8515 to 8519), the one (8519) when the signal (MZE) and that from the XRZ counter appear at the same time (804) is lit up and the other two (8515, 8517) if the signal (NZE) appears too early or too late compared to that of XRZ counter (8o4) flash the signal developed. 25) Device according to one of claims 12 to 14, characterized in that that between the synchronous motor (109) and the pulse generator (8o5) a pulse converter (807) is switched. 26) Device according to one of claims 1 to 25, characterized in that that the printer (9) can be operated point by point or line by line.