• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    1531520 Facsimile DR ING RUDOLF HELL GmbH 11 March 1976 [11 March 1975] 09879/76 Heading H4F Apparatus for engraving printing cylinders as described in Specification 7918/76 includes an engraving tool control circuit 48, Fig. 1, described in detail w.r.t. Fig. 5 (not shown), which causes the tool to engrave the first cell of each cell line, at half normal stroke. The cell is retrospectively engraved at full stroke on the subsequent revolution of printing cylinder 2. By this measure engraving errors are avoided which derive from overshoot of the engraving tool upon commencement of line engraving. Similar errors upon termination of line engraving are avoided by allowing the tool to perform a non-cutting half stroke into the second cell of the line after the retrospective engraving of the first cell prior to returning the tool to its inactive position. Figure 3 illustrates the state of first cell 109 immediately prior to retrospective engraving and (ghosted 110<SP>1</SP>) the deepest position through which the tool moves, prior to being deactivated, in the second cell 110. Figures 2 and 4 (not shown) are used to describe the input and output management of the digital processing unit 28, Fig. 1.
    公开号:SU984400A3
    申请号:SU762331202
    申请日:1976-03-10
    公开日:1982-12-23
    发明作者:Дельвес Юрген；Григер Дитер
    申请人:Др.-Инж.Рудольф Хелль Гмбх (Фирма)；
    IPC主号:
    专利说明:

    element, the formation of a video signal of the corresponding tonal image of the image, line by line drawing of the cells on the printing cylinder with the help of an electromagnetic engraving organ with a mechanical cutter, controlled by the engraving signal, formed by superimposing the video signal on the raster signal, retraction of the cutter to its original position and step movement of the engraving ergant line along the axis of the cylinder; several initial cells of each row are engraved by partially changing the cadre from cell to cell ke and gradually dos tiga1N) present nominal value opus Kani engraving 1reztsa after blowing them with dogravirovkoy remaining after the engraving of cells lines. In this case, the cutter is retracted to its initial position by partially decreasing from the cell to the cell of its rise. To achieve this task, a device containing a cylinder with an image source, an optoelectric reader of readings, an element connected to an analog converter — a code, a code converter — an analog, a memory block connected to the converters, clock generators of an analog converter — a code, and code - analog, connected to a synchronizing cascade, printing cylinder, electromagnetic engraving organ with 1 chisel cutter, connected through an amplifier with a converter; code - analog, cylinder drives of the readout ementa and gras virovalnogo organ to the control unit, is introduced engraving signal converter and lifting gras virovalnogo body included between row code converter - analogue and the memory unit. FIG. 1 shows a block diagram of the device; in fig. 2 shows an example of performing an engraving signal converter and raising an engraving organ; in fig. 3 engraved print cylinder section. The device consists of a cylinder - FOR the original image 1, a printing cylinder 2 with a clutch 3 and a synchronous motor 4, a current converter 5, a generator 6, dividers 7 and 8 of the optoelectric analyzing element 9, a stepper motor 10, a motor control unit 11, a power amplifier 12 the divider stage 13, the analog converter — code 14, amplifier 15, the memory block 16 with the first delay stage 17 and the second step 18, the write counter 19, the read counter 20, the storage device 21, the multiplexer 22 and the central unit 23, an amplifying Step 24, a synchronization circuit 25, an engraving signal converter 26, an analog converter code 27, an amplifier 28, an engraving body 29, a dividing stage 30, a stepper motor 31, an engine control unit 32, a power amplifier 33 and tag reading elements 34 The engraving signal converter contains AND 35a-35l circuits, a HE 36 circuit, an AND 37a-37li circuit, an OR circuit 38a-38f) with inputs 39-41 and an outlet 4 2. In the proposed device, the cylinder for the original image 1 and the printing cylinder 2 are connected with a friend through uftu clutch 3 together and are driven in rotation by a synchronous motor 4. The synchronous motor 4 is powered through a power converter 5 from the network frequency (. The current transducer 5 creates an artificial power supply network, whose frequency G. depends on the frequency setting the clock sequence T. The set clock sequence T is obtained from the clock sequence T of the generator b by dividing steps 7 and 8. The original image is attached to the cylinder pin 1. The pins are located on educated To obtain the image signal, the original image of the original 12 is read line by line using the optoelectric analyzing element 9. The analyzing element 9 can be shifted parallel to the cylinder 1 using the lead screw and stepper motor 10. The control unit 12 powers the clock to the stepper motor 10. the TS sequence which is obtained by dividing the frequency of the clock sequence Tg in the dividing stage 13. To convert the analog image signal to a digital code An analogue converter code 14 is provided, the analog input of which is connected via an amplifier 15 to an analyzing element 19. Digital analogue converter outputs — the code is connected to the information inputs of the memory of a device of image lines - (memory block 16), which consists of the first stage of delay 17, second stage delays 18, write address counter 19, read address counter 20, memory of device 21, multiplexer 22 for connecting outputs of write address address counter iy or read address address counter 2 outputs 0 to the address inputs of the storage device 21 and from the central control unit 23. The conversion of the image signal in the analog converter 14 and the recording of information in the image row memory 16 is controlled from the read clock sequence T. The clock read sequence T is obtained by frequency division the clock sequence Tp in the division stage 24. Through the synchronization circuit 25 for a set of write addresses, the sequence T is fed to the input of the memory Image line 16 and the analog input to the control input of the code 14. For the digital image signal code inverter from the stored information, the information outputs of the image row 16 store the information through the conversion unit 26 to the analog inputs 27 of the converter. The analog output of the converter code analog 27 through an engraving amplifier 28 is connected with an engraving body 29. To control the engraving and reading information from the memory device In order to get a raster grid on the original image, engraving provides for the clock sequence of reproduction 1. The clock playback sequence Td is obtained by dividing the clock frequency Tp in the separating step 30. The clock frequency T gets through the synchronization circuit 25 for a set of read addresses to the input of the memory devices of image lines 16 and for creating a raster grid on the original image by float on the engraving amplifier 28. In the engraving amplifier, 28 clocks The reproducibility of T is transformed into a sinusoidal alternating voltage, and the latter is superimposed on the image signal. An engraving body, using an engraving cutter as a cutting tool, produces an engraving on the printing cylinder. The engraving unit 29 can also be fed by means of a feeder consisting of an lead screw and another stepper motor 31 / fed parallel to the printing cylinder 2. The stepper motor 31 is also powered by an If clock sequence through another motor control unit 2 and a power amplifier 33. The analyzing element 9 and the engraving 29 do not move when reading or engraving one line. The read lines of the image are thus parts of the concentric circles of the surface of cylinder 1. Engraving elements (cells are also engraved on parallel to the region (- the surface of the printing cylinder 2). Each start of reading the image line from the top edge of the original image is determined by the Start command readout, which is obtained after a time delay from the beginning of a circle's pulse. This pulse, which is obtained by reading by the label element 34, is supplied from the synchronization circuit 25. Each end of the image line scrapping at the lower edge of the original image is determined by the read end command signal, which is received in the image row memory in the memory block 16, goes to the synchronization circuit 25. This end read command also performs the feed step along the axis of the analyzing element 9. Each Read Start command starts the clock reading sequence Te at a certain point in time and in a certain phase. Each End Read command interrupts the T clock read sequence. These processes are controlled by a synchronization circuit. 25. The number of cells grafted on one line of energy emission on the printing cylinder 2 is equal to. Since the engraving depth of cells is determined by the tone value of the corresponding point of the read image on the original, the number of read points Hd in the line of the read image is equal to the number of engraved cells Zj). With each clock cycle of the read sequence T, the image point is read, which at this moment is read below the analyzing element 9. At the first clock cycle of the reading sequence Tj under the element 9 due to the action of the synchronization described. From read start commands and clock read sequence T, the first read point of the first line of the image is found. The first clock of the read sequence T also hits the analog converter — code 14 and causes the image signal to be converted into digital information.
    for the first point of the image, which comes from the digital output of the npei-Disposer analog - code 14 for recording in the memory the device of the image lines 16.
    In the memory of the device of the image line 16, by a command of the central control unit 23 to the selection input of the multiplexer 22, the slots of the address counter of the record 19 are connected to the address inputs of the storage unit 21. By means of one more command, Change the area from the central control unit 23 to the control input of the zaposhsh device 21 Let the first field of the device be selected. This prepares the start address of the first region of the memory device for recording information | 1ats from the first point of the image. 20
    Recording of the output is made by another command Recording from the central control unit 23 to the control input of the storage device 21.
    The set of address 1 for storing the 25. information from the second point of the image is performed by increasing the content of the write address counter 19 from zero to one using the first clock cycle read delay T delayed in step JQ ki 17, the delay time of this step 17 is chosen so that that the write process ends before the address number is increased. .
    The second clock cycle of the read sequence T received by the analogue converter - code 14 begins the reading of the second point 40 of the image. After conversion, information about the second point of the image on command. The record coming from the central control unit 23 to the control input of the memory 45 of the device 21 is stored under address 1, the second clock of the read clock Te sequence delayed in the delay stage 17 retells the address from 1 to 2 and eg prepares the process of recording the third point information under By address 2. The second point will be remembered by the 2nd cycle as the first point of the image first under the final address 2-1., the first area of the memory is shiak1 (its devices. The write address counter 19 after the programming input is preset and the number ZA, so that after 2d clocks of the clock sequence Tj, it returns to the initial state and re-abethe the starting address O. This completes the recording process for the first line of the image,
    not read, and by changing the area of the central control unit 23 to control the input of the memory 21, the second memory area is nibbled.
    A second line of image can now be read from the top edge of the bottom edge, and information can be written to the second storage area. The writing process will begin again with the Start Read command, which is visible after a complete rotation of the read cylinder 1, and will end with the Read End memory command of the image lines 16.
    At the beginning of the engraving, the synchronization circuit 25 opens the clock sequence of reproduction of Tu, and the first clock enters the memory input {its device of the iso-frigichen lines 16.
    By means of the central control unit 23, to the selection input of the multiplexer 22, the outputs from the circuit reader 20 are connected to the central inputs of the storage device 21. By means of one more command, Change the area, the control inputs to the control input of the rear device 21 will again be typed first memory 1 1 (its devices.
    With these actions, 01 is scored starting at the address of the first area of the storage device under which the information of the first line of the image is located. reading of information begins with the command Read from the central control unit 23 to the control input of the postoperate device 21 at the moment when the first clock of the clock sequence of playback starts. At the input of the recording device of the line device of the image 16.
    The readable information for engraving a cell is located at the information outputs of a row of images in image 16 in order to extract an analog value in a converter — analogue code 27.
    The digital information or its angular value is the tone value or, accordingly, the depth of cut of this cell.
    At the beginning of the engraving, the cutter of the engraving body 29 would have to make a big move, since it would have to lower from its initial position to the depth of cut of the engraved cell.
    To reduce the magnitude of the stroke of the engraving cutter, and so to reduce the defects of the engraving mentioned in the general part of the description.
    the full stroke is divided into individual partial lowering depths. In the exemplary embodiment, only one partial stroke is provided, which is equal to half of the desired stroke. Depending on the size of the required stroke, i.e. Depending on the value of the tone to be engraved, the tip of the engraving cutter when deviating to a partial stroke during the first clock cycle of the playback sequence Td may not reach the surface of cylinder 2 at all, or engrave the cell of a reduced depth of cut. The first cell, therefore, is either not engraved at all or is engraved with reduced depth. In both cases, the first cell must be warmed to the nominal depth later in order to achieve the correct tone for the image. In contrast, the second cell is immediately engraved to the nominal depth.
    In order to obtain a half-stroke of engraving the first cell, the information read from the memory 21 is converted in converter 26 and the analog-27 code is supplied to the converter. The transcoding is performed by a command from the central control unit to the control input of the coding circuit of the conversion unit 26.
    The second and all subsequent cells of the first line of the image are finally engraved to a depth corresponding to the memorized information, i.e. with the correct tonality. To reproduce these cells, the first clock cycle of the playback sequence Td, delayed in the delay stage 18 of the memory device of the image 16, dials the address 1, under which the information of the second point of the first image line is stored. The reading of this information and the engraving of the second cell of the image are carried out with the second cycle of the clock sequence of reproduction T ,.
    The z-th clock cycle of the playback T will read the information of the last point of the first line of the image, which is located under the final address Z-1 from the first memory area of the storage device 21. This completes the process of reading the first line of the image and will be engraved on the cylinder 2 exactly Z) of the cells on the one line along the circumference of the cilidra.
    The reproduction of the second line of the image is delayed until the first warming up is completed.
    In conclusion, the engraving cutter occupies its initial position, after which the feed step of the engraving body 29 occurs. In order also when lifting the engraving
    cutter to reduce its stroke, it is first half of the nominal immersion lowered into the second cell of the first line of the image already engraved to its full depth before it takes
    initial position.
    Management is as follows.
    Since the address read counter 20 is also preset
    5 to the Z number at the programming input, then by the delayed tth clock cycle of the playback sequence Td, it is set back to the zero state, due to
    For which the address O is recalled, under KOToixjM is the information of the first point of the image. This information completes the first cell of the line.
    The 5 (l + l) -th clock cycle of the Ti playback sequence, calls up the address under which the information of the second image point is located. This information in transform unit 26 is reduced by half and lowers the 11th cutter to half the nominal depth.
    Now, at the signal output of the line memory, the image 16 is displayed, End of Engraving, issued by the central control unit 23, which goes to the engine control unit 32 and starts the stepper motor 31. on the side of engraving. At the same time, the End of Engraving command is issued to the control input of the conversion unit 26, whereby the engraving cutter fails to its initial position. The stepper motor 31 shifts the engraving body 29 to the next row of the image.
    As soon as the movement ends
    0, the control unit 32 issues the end-of-command command to the central control unit 23, and the second line of the image may begin to play. During the filing of an engraving organ, the readout address counter, 20 continues to operate in its counting cycle. Before we assume that by the time of arrival, the command of the filing command is addressed
    0, read counter 20 is just Abrade A. Address A is marked, and reading of the information stored under Address A begins. Thus, the second line of the image is played, thus, it does not begin by engraving the first cell of this line, but from the cell, the information about which is stored under the marked address A, namely at that point on the surface of the cylinder, which, by the moment the command arrives, the end of the feed is directly below the engraving body 29 After the command end of the feed, the grabber must again be from the initial position neither go in, your working position. To reduce the stroke, therefore, according to address A, the stroke of the cutter is first halved. After the partial stroke of the engraved cutter, the cells of the image line are engraved, information about which is stored under the addresses A + to 2-1. In order to fully reproduce the image line, the cells must be terminated, which were not engraved at all during the submission of the engraving body 29 and information about which is under the addresses from O to A-1. After correcting the cutting depth of the cell, located under address A and raising the incisor, the End Engraving command passes, which ends the full engraving of the second line of the image and begins again with the feed movement of the engraving unit 29. In FIG. Figure 2 shows an example of the execution of a conversion unit 26, by means of which the ratio of steps 1 -f + shown in Fig. 3 is implemented. The number corresponding to the step -S determines the course of the engraving cutter by which it must be deflected from its original position in order to achieve the required The depth of the cut is not the desired or the tone of the cell. The number corresponding to the step SLj in the form of an eight-bit binary word is stored for each cell being engraved in the memory. , The number corresponding to the ST step. also in the form of an eight-word word, denotes a word that should be filed with the converter code - analogue 27 instead of word S, so that the engraving cutter makes only half of the move. The number for the step 84 255 corresponds to the binary number 11111111 and characterizes the initial position of the engraving cutter. The term –j is obtained from S, decreasing the binary number digit by a binary digit by 1 and discarding the digit with the least bit digit. The term Back / 2 2 corresponds to a binary number of 10,000,000. The information inputs 41 of the conversion unit are connected to the information outputs of a non-illustrated storage device, and the information outputs 42 are connected to digital inputs of a non-illustrated converter code — analogue 27. Information input 41a is through circuit I 35a and the OR 38a is connected to the information output of the same size 42a. Information input 41ft can be connected via both AND 37 &amp; and the OR-38e scheme with the 42ft output in the same size as through the AND ZZa scheme and the OR-3A scheme with the information output of the lower bit 42. Similarly, all further information inputs can be connected either to the outputs of the same or to the outputs of a lower size. With a low logic level at the control input 39 of the circuits I 35 a, 35 are locked, and the circuits I 370-37b are open. This connects the information inputs 41 to the information outputs 42 of the same size. The digital information available at the inputs 41 passes through the conversion unit without changes. At a high logic level, at the control input 39, the inputs 1 of the information 41 are connected to the information outputs 42 of a lower bit, due to which the summand is formed. At the same time, the information output 42ii has a high logic level, since one input of the OR 38fi circuit is connected to input 39. This adds a constant term 54D 21. With a logic signal of a high level at control input 40 of the conversion unit, all information outputs 42 have a high logic level, which corresponds to the binary number 11111111. This number must be submitted to the converter code - analog 27, if the engraving cutter must be moved to its original position. FIG. Figure 3 shows a developed section of the surface layer of cylinder 2. The direction of movement of the cutter of the engraving body 29 and cylinder 2 is proved by arrows. In addition, some positions of the engraving cutter in the depth of cut from the initial position above the surface of cylinder 2 to the maximum depth of cut with a black tone are shown by steps S. As the step S corresponds to a certain value of the angular image signal or, as in the example of execution, a certain value of the memorized code. The maximum KLH, a cutting bin of the engraving cutter 106, corresponding to the tone of black, is determined by the step SQ O.
    A step with a level Sj 212 corresponding to the tone of white determines the level of the engraving cutter 29, at which its tip slightly touches the surface of the matrix cylinder 2. Between the black and white tone there are thus 212 levels of tonality or numbers S. The initial position of the engraving cutter 29 corresponds to the number of steps S4 255.
    As already described, the engraving cutter 29 is moved from the engraving position to the starting position Sa before starting to feed. After the end of the feed movement, for example, a cell should be engraved, the depth of cut of which is determined by the 6l step. At this point in time, let the engraving cutter 29 be in the position shown in the figure above the surface of cylinder 2.
    The engraving cutter 29 at the beginning of the engraving of a new line deviates only at half stroke C step a Si) Depending on the tonality or depth of cut, the step of the cell to be engraved, with the tip of the engraving cutter 29 at a deviation on a partial stroke either does not touch the surface of the cylinder 2, or as shown in FIG. 3, the first cell is cut to a depth different from the nominal one.
    The second cell will be engraved at full depth. The value of the step can be obtained from the ratio
    After one revolution of the cylinder 2, the engraving cutter 29 and the cylinder 2 will again be in the painted position.
    Now the first cell completely missing or partially cut first is cut to the nominal depth (step 5,) V. This ends the engraving of the full line of the image, and the engraving cutter 29 is lowered again with a half stroke (step 5g) into the already engraved second cell lines of the image before it goes to flesh (step 54) —This process is indicated by a dotted line.
    权利要求:
    Claims (3)
    [1]
    1. A method for manufacturing screened plates, including progressive reading of an original, an image placed on an original cylinder, using an optoelectric reading element, generating video signals corresponding to the image original's tone, progressively engraving cells on a printing cylinder, using an electromagnetic engraving body with a mechanical cutter, signal-controlled engraving formed by video overlay
    5 per raster signal, cutter retraction
    to the initial position and step-by-step movement of the engraving body to the next engraved line along the axis of the cylinder, distinguished by the fact that, in order to improve the quality of the manufacture of printing plates, several initial cells of each line are engraved by partial, changing from cell to cell and gradually reaching the nominal the lowering values in the direction of the printing cylinder of the engraving cutter with their subsequent dressing after the engraving of all remaining cells of the line.
    [2]
    2. Method pop. 1, otli-. This is due to the fact that the cutter is retracted to its initial position by means of a partial, reducing state from the cell to the cell of its ascent.
    [3]
    3. A device for making raster printed forms containing a cylinder with an original image, an optoelectric reading element. Connected to an converter: analog — code; converter — analog, memory block, connected to converters; analog clock-to-pulse generators and code 5 analogue, connected to the synchronization cascade, printing cylinder, electromagnetic engraving organ with a mechanical cutter, connected through an amplifier with a transducer code, analogue, drives c Cylinders of a reading element and an engraving body with control units, characterized in that it has a signal converter for engraving and lifting an engraving body, connected between the converter and the code — analog and memory unit.
    0
    Sources of information taken into account during the examination .1, USSR patent 23 232260/12 2. USSR patent according to 240616b7l2,
    t
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    DE19840926B4|1998-09-08|2013-07-11|Hell Gravure Systems Gmbh & Co. Kg|Arrangement for material processing by means of laser beams and their use|
    DE502004004634D1|2004-02-27|2007-09-27|Hell Gravure Systems Gmbh & Co|Method for direct engraving of cups for receiving printing ink for gravure printing|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DE19752510533|DE2510533C3|1975-03-11|Method and circuit arrangement for engraving screened printing forms|
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