PROCEDURE FOR THE PRODUCTION OF PHOTOGRAPHS ON ELECTROPHOTOGRAPHIC MATERIAL, IN PARTICULAR FUER THE PRODUCTION FROM PRESSURE PLATES AND DEVICE TO THE EXECUTION OF THE PROCEDURE

The invention concerns a procedure for the production of photographs on electrophotographic material, which is intended for photographs of all kinds suitably, in particular however for the production of pressure plates od.dgl, whereby the material is loaded, a latent picture from load groupings is formed by purposeful unloading of the loaded surface by means of next to one another and parallel a luminous beam led across it in a certain direction in lines and this latent picture is developed. The invention concerns also a device for the execution of this procedure, with a mounting plate for electrophotographic material, a mechanism for the delivery of radiating energy, which is over a Antriebseinriohtung relative to the electrophotographic material adjustable in accordance with a sample or a Baster, so that the radiating energy can affect a pre-determined range of the material, whereby the driving device produces the respective Eelativlage of the mechanism for the delivery of the radiating energy opposite the material identifying goal signals, the sample and/or the following Æufladeeinrichtung rests for loading the electrophotographic material before beginning of work of the mechanism for the delivery of the radiating energy and a radiation transducer is intended, toward the delivery mechanism and between transducers and delivery mechanism Modulationsund deflecting system for that directs a fine jet Jet is arranged. With the gegenständlichen procedure the used radiating energy can come for example from lasers. In the general Druektechnik with the lithographisehen offset printing the material provided with the admission is treated in such a way that sounded and non-colored ranges of the admission become hydrophilic hydrophob and/or, so that then the material forms a pressure plate without further treatment. In other cases the getönt8 can find electrophotographic material than storage medium use, whereby projects the information and/or the picture read, then, if the Ma2s is terial transparency, or if necessary also on photographisehem way to be reproduced to be able. A preferential area of application of the procedure according to invention is with the production of Druckp] atten either on transparent synthetic resin foils, e.g. polyesters, or on metal, e.g. zinnplatiertem steel. The respective carrier is provided with a photoelectric Besehichtung, whose type will be described later still more exactly. In printering pictures, photographs and other photographs or representations with application of the so-called half-tone printing are usually reproduced. The original or the respective collecting main is photographed by a lattice from each other crossing parallel in each case lines in a direction, in order to receive on the photographisehen film Bildpunktrelhen (Basterpunkte]. Each pixel in this rests has a certain size and arrangement in relation to the other produced pixels, which are connected with the picture density of the associated Bildbereiehes in the reproduced collecting main or are to be connected. Black-and-white graphics are only once photographed by the lattice, against what color collecting mains several marks are photographed, u.zw at least once for everyone color which can be printed, whereby in the latter case each photography takes place via the same lattice, but different color filters are used in each case, in order to divide the 0riginalvorlage into their primary colors. With application of other photographic procedures will then these rests out abstandsweise arranged points to Metalloherfläehen to transfer, so that they form the pressure plates, which are installed in the Druckerpresse, with whose assistance the collecting main to be reproduced are. The pressure plates must print the respective color excerpts in exact mutual adjustment and/or allocation on the receiver, with whom it concerns usually a paper web. In intended a range of the paper from there so many printings come for the effect, when Farbplatten are present. The composition of these point grids leads to a compound point grid, with which many single points are one above the other, so that a color blending develops there, which is to reproduce the color of the original within the appropriate range so exactly as possible. If the lattice, by which the collecting main was photographed, is sufficiently fine, then the human eye will not so easily notice the individual points, but will integrate the entire Baster in shades of different Bilddlchte, which simulate the Orlginalvorlage very close. A picture available as photography could be determined for example a continuously sounded picture mentioned, since with free eye no pixels are visible, the pixels only with a microscope with strong enlargement and, what it is actually visible, if one increases too strongly, hardly the pixels, but sees rather the Silberkörner, which are arranged without gaps next to each other and normally. A continuously sounded picture cannot be converted directly into a pressure plate, because then the Druekfarbe and/or printing-ink because of the F< apillarwirkung between following picture elements to flow directly together and smear themselves could, so that the visible gradients of different picture density were destroyed. l0 with the black-and-white printing are intended with the half-tone printing point rows, which different shades of grey between the extreme white, where no points are present, and black devoted, in what latter case the points so close lie together and are so large that they carry strong coatings from printing-ink or color in the Druckerpresse. With the colour print several printings do not only become the achievement of the different shades is between Hel! and darkness, but also therefore needs to reproduce in order to produce the different colours, which are needed, in order originally the continuously sounded original. The past procedure for manufacturing pressure plates of this kind by hand out is labor intensively, time-consuming and expensive. It is necessarily for it a considerable experience and a large Kapitaleinsatz, in particular if large quantities of pressure plates are needed, like this with the pressure of appearing periodic block letters, pictorials, magazines, books and other products of printering the case is. The procedure for manufacturing pressure plates with application of the same techniques, as they were so far in use, was already made lately on electronic way, whereby the color excerpts must be however still made and be made of them the pressure plates made of metal. Photo sensors are used, around which intensity or density of the individual picture elements of a continuously sounded picture to determine and then digital data become produced, by which are accepted that them the different densities of the so-called picture elements of the original picture, thus the collecting main, to represent. The digital data are used then in order to reproduce the picture as a point grid on a pressure plate, which takes place by heat or photo-sensitive systems. These systems use usually laser beams, in order to export a collecting main on more hitzeoder lichtempfindliehem film or paper. The exposed film or the exposed paper is then further-treated, in order to produce the admission on the pressure plate. If these systems are also not so labor intensive, like, the ven hand from durchzuffihrenden procedures, already described, then they are nevertheless considerably more expensive than the procedure according to invention, whatever and to have different disadvantages will be still described. The materials, on which the photographs are produced, must talk at a considerable expenditure of radiating energy for element range expose or activate, whereby also for each element range a certain time interval is necessary to burn or burn in order to produce the picture element, but under no circumstances the material through. This leads to considerable problems. The production of photographs in this way is perhaps as time-consuming, as the production ven plates by hand out, but not fast enough, in order to make either short time photographs or the production possible of line-free pictures. This procedure becomes corresponding also yet in larger extent for the production of pressure plates does not use that. If one overprints colors with the half-tone procedure with other colors, a further problem arises. With the pressure of several colors, for example the primary colors for the production of the desired Farbschattlerungen it comes to the training of unerwfinschter Moir - interference samples. Moira samples develop, if single printings from different lattices with different number of lines per unit of length are fibre-each other-put. In addition, such samples develop, if pressures are attached one above the other by lattices with same number of lines per unit of length under small shifts in relation to the target position. These samples are seized the picture printed by the human eye well as wave trains bright and dark lines at. With the half-tone procedure the line lattice, by which through the collecting main is photographed, produces auoh the LinienNr.366646 sample at the printed picture and causes also the Ionier sample in allfälHg the printed picture. With the qualitatively high-standing pressure Moira samples are not acceptably, also with every other pressure affect such Moire samples much disturbing the Bstrachter and more beeinträehtiger besides the color reproduction. S the most usual solution for this problem with by hand from half-tone which can be prepared - printing process consists of photographing each color excerpt also in another angle arranged grid lines. Printing also after these color excerpts manufactured plates takes place then likewise also under different angles of their modular dimension attached pressure plates. With application of this technology the color excerpt is photographed and afterwards printed, with that the le Vertikalliniefi of the lattice in an angle relative to the baseline runs, which coincides with the horizontal axle of the compound picture or runs with this parallel. This line runs normally also parallel to a horizontal edge of paper or another material, which is to carry the admission, the Farhen of the Mehrfarbendruckes can Magentarot, Cyanide-blue, yellow and normally also black than additional, the reinforcement serving color cover. The angles, which are normally used with the pressure of these colors, are 90° for yellow, 750 for Magentarot, I05° for Zyanb] outer and, if it is used, 45a for black. From the arrangement of the color excerpt lattices under different angles sees no complete solution of the shown problem, since the eye will be nevertheless still in many cases in the situation results in, to determine Moire samples Öherdies leads this technology to the training of small Rosetten, which can to lower and much disturbing work the quality of the Farbbildes if they arise with the given picture within critical ranges. During the production of qualitatively high-quality pressures different color excerpts can be used up to 18. Each color excerpt is used in such a way its own point grids to exhibit and that it prints in relation to the other color excerpts in another raster angle. A large care must be spent, in order to arrange the Drnckwinkel in such a way that the training is reduced by Moire samples and besides must the point distance is in such a way selected that the point overlay is reduced. This applies particularly then, if many printings are necessary, in order to achieve a certain color, and is still more important, if the Druckfarse ben becomes essentially obscure. Electronic color systems produce by the color excerpts that the original picture or the master artwork is scanned by färbige filters. The seized picture elements are then digitized and used in this form for the formation of the point grid. The seized densities of the picture elements in each color excerpt are normally treated as stages of a grey scale, which is enough from the smallest to the largest density. Each stage to the grey scale, each point grids is alike regarding its Fläehendichte of the seized density of an appropriate picture element of the collecting main. If the point grids one prints, theoretically an equivalent density is then reached in the printing ink and transferred to the receiver or the paper carriage. It should be still stated that the raster points are different with the händischen and electronic production of halfsounded color excerpts. The points produced in the hand procedure differ according to the respective surface range and the distances from the points surrounding them, in order to produce the different densities and shades from grey to. Thus a light-grey or a small density exhibiting picture is represented by small points, which are arranged in large distance from the neighbouring points. A dunkelB5 grey or a strong picture density exhibiting picture is represented by large points, which actually affect each other nearly or. The electronically formed points are generally fixed regarding their size and its distance. Their form is normally determined by the used material and can correspond in their Grölte the smallest point in that by hand from procedures which can be accomplished. The varying intensities formed by the number of PunkSO ten represented in a matrix in a unit area or. Thus a light-grey picture is represented by a small number of points in each Matrlx or in one of several stencils. A dark grey picture is represented by a large number of points in individual matrix. Also when printing with electronically produced color excerpts Moir - samples can occur. This occurs, because the single points are evenly arranged in each matrix and also the stencils relatively to each other evenly and are homogeneously arranged, in order the picture to result in. Normally the information is held in each matrix in certain ranges, which swore horizontal and vertically. 0ede matrix is arranged SE that their points with the points of the preceding and surrounding picture elements lie in a line and/or a row. Even if the picture resulting in points are integrated by the human eye, then the arrangement of points in a line or a column becomes nevertheless noticeable in the form of Moir - - interference samples and/or or Rosetten. A major task of the invention consists thus of indicating a procedure with which Moir are eliminated - or Rosettenmuster with the production of pressure plates and printing. With a procedure of the kind initially specified the invention essentially consists of it that the luminous beam from several jets is formed, modulation signals is produced and by Anund Absehaltung of certain jets of the bundle during its adjustment movement over the lines a modulation is made, in order to produce successive series of mikroskopiseher picture parts (pixels), which in itself discrete groupings of loaded and unloaded picture elements exhibit, whereby each picture part (pixel) represents a subrange of the admission, in that surface portion of the group of the loaded picture elements remaining after the passage of the luminous beam essentially desired Bildbzw. Farbdiehte of this picture element is proportional. so that the total admission by the sum of all picture parts in the entire area is formed. In summary it can be said that with all well-known procedures the philosophy is to attach in an empty picture element a “point” in the respective picture color. Such one point containing picture part can be called also “pixels”. The finished picture consists then of the sum of the raster points, which exhibit different colors if necessary. In contrast to this the philosophy according to invention consists of planning for each “pixel” in place of individual point of size changing if necessary a discrete grouping of picture elements thus the information content of a “pixel” not only by different spot sizes expressing but by different groupings of its picture elements. A device of the kind initially specified is characterised essentially according to invention by that over Modulationsund Ablenkeinriehtung individual, purifies jet into a luminous beam from several, at the same time against the electrophotographic material arranged single jets detachable is, so that with its assistance at the electrophotographic material picture parts (pixels), which and unloaded picture elements loaded in each case contain, are producible, from which under normal conditions the loaded for the rendition of the close photograph parts and the unloaded for the rendition of the bright background are intended. Preferential execution forms of the invention article, further distribute and characteristic details come out from the following Zeichnungsbesohreibung. In the designs the invention article is for example illustrated. Fig.l a block gear change of a device point to the production of pressure plates with application of the procedure according to invention, Fig.2 a more detailed Bloeksehema of the generator for the determination of the picture fig., Fig.3 a detailed Sehema, in which the Strahlenwege of a compound laser beam bundle are shown to Fig.4, which is directed against a elektrophotographisehes material, plan view on of several picture parts consisting section admission to more explanation invention, Fig.5 another plan view on out gehreren picture parts insisting image field, whereby evident is, as entla'dene ranges to unentladenen ranges in different local arrangements in the individual picture parts to lead and Fig.6 a diagram, in which the picture density in relation to the information content was laid on, around the effect that To explain Moir4-Interferenzmuster, which are avoided by the invention. With a preferential Ausführungsfcrm digital data, which represent that or picture which can be printed otherwise which can be reproduced, can be produced with the help of an optical scanning device or with the help of a computer or other Einriehtungen. In each case the digital data contain binary words, which represent the density of the individual picture elements or picture parts, which are to be reproduced. The digital data can be supplied to the photograph mechanism from a memory. In addition, it is possible to supply the data nnmittelbar if they are produced or synthesized, scferne here the production rate same or smaller than the photograph speed during the imaging is. The photograph mechanism with the preferential execution form of the invention article plans a laser beam or a laser beam bundle for the exposure of an electrophotographic material, which exhibits a photoelectric coating, which was loaded before. The material is carried by a swivelling drum, on which it is also sounded. Later the material is used for it, the sounded picture too transferred or the material serves than medium for the projection or for the production of pressures of the picture. With the pressure the sounded picture was used to receive in order to carry in a Druckerpresse printer color or printing-ink, whereby the material was treated, in order hydrophilic and hydrophobe ranges so that it could be used as pressure plate in the offset lithography, which represents at all its preferential Verwendungsgebiet, in Fig.1 became a device according to invention generally also --20-- designated. One can judge the device best if one assumes that. that its purpose consists of it, data and/or, to receive to information from a source to which contains practically, its reproduction is desired. These data are transformed into signals of a type, which can be processed with an energy working mechanism, e.g. a laser radiating with a jet, so that on an electrophotographic material an admission is producible, which exhibits a desired sample, whereby for this purpose the correct conditions of admission are kept. Additionally to the arrangement of the combination of a special kind of a so-called scanning device with the transformation part of the device also different subordinated criteria are treated, which would be useful also in other systems for the production of photographs on electrophotographic material. It should be clear that the main field of application of the invention is with the production of pressure plates for the offset lithography on electrostatic way that however with each kind of the use of an electrophotographic material advantages arise, if this material treats with the erfindungsgemäBen apparatus and according to the procedure according to invention thus with an admission will provide. The data source or data supply mechanism --22-- became during the device --20-- after Fig.l as block represented. As was already suggested, it knows during this data supply mechanism around an optical scanning device (an optical scanner), a computer cd.dgl, acts, which produces and/or supplies and/or the signals, which diagrams, pictures, can contain designs, text etc. During the data production also on artificial way synthetic (thus not direct from a collecting main coming and/or) signals derived from this can be produced and/or used. The basic condition consists of that the signals supplied by the data source contain information, which can be expressed as picture density and picture content. The signals are converted with the help of actually well-known transformer cd.dgl, within the data source into binary signals. The binary signals from the data source appear in the channel --24-- in Fig.l, which will later still more near be explained, and become the picture partial generator --26-- supplied. Of the picture partial generator --26-- produced signals are those signals, those the laser beam steer and over its channel --28-- are led. The structure of the picture partial generator --26--, as a function of it supplied the signal the microscopically small mosaic picture parts produced, is a crucial factor with the achievement of a high reproduction quality and represents to one of the most important solution steps with that the invention underlying task. It is also crucial for it that Moir4-Muster in the received pressures, those with the help of the device --20-- producible are substantially reduced, if can be not even completely eliminated. In the exit of the picture partial generator --26-- contained information is used for it, around one of a laser --82-- produced laser beam --80-- to divert, that by a elektro-optisch8 deflecting system --84-- one leads. One keeps in this way a radiating sample from jets of a luminous beam, that to and small for itself as as individual jet --36-- to be can. This a luminous beam representing jets --86-- cause the actual, already mentioned admission on a rotary cylinder --38--. With the cylinder --36-- it concerns electrophotographic material and/or over on a cylinder carried electrophotographic material, which can exhibit the form of a foil from metal or synthetic resin, e.g. polyester, which is provided with a photoelectric coating. In the case of this coating it preferably concerns CadmiumsuIfid, which is laid on in micro-crystalline form with normally crystallites oriented to the surface on a galvanically leading surface of the carrier in a special manufacture procedure, i.e. by glowing borrowing unloading coating under adherence to special conditions for the reaching of orientation mentioned. As was already mentioned, the material is not more near held for darI0 thorn placed on one, that of a wave --40-- , those is carried for its part by an engine --42-- propelable is, also a driver --44-- propels, whose of it consists task, information signals over the accurate turning position of the wave --40-- to produce for each time. One receives thus a monitoring, which is needed, around an exact synchronization at the line --28-- appearing signals with the respective turning position of the cylinder 15--38-- to obtain. Also a connection between that became corresponding the wave --40-- assigned driver --44-- and the picture partial generator --26-- represented. The ejected beam or the ejected beams of the deflecting system becomes from the radiation molder --46-- still modifies, so that the let through jets --36-- appear. The unabgelenkte, thus by the electrooptical deflecting system --34-- yet Hauptstrahl of the laser and the harmonious Nebenstrahlen did not affect or unwanted strewing energy is removed. The compound jet --36-- becomes a mirror --48-- led, that on a car --50-- is installed and with the help of this mirror --48-- by a suitable optical system, e.g. a lens --52--, on the surface of the cylinder --38-- reflected. In the course of its guidance way the compound jet can --36-- over mirrors --54 and 56-- and/or over prisms od.dgl. are diverted. The car --50-- becomes from a guide spindle --58--, those is threaded and by an engine --60-- propelable is adjusted. The engines --60 and 42-- must also in a certain relationship standing speeds be propelled, around the geometrically correct production of the admission at the cylinder --38-- to ensure, why a synchronisation mechanism is intended, those as B! ock --62-- in an electrical connection --64-- between the engines one suggested. The synchronization can be achieved also by mechanical connections or, if this is desired, by that the same engine both the cars --50-- and the wave --40-- over appropriate transmissions propels. For the production of the admission it should be clear that the car and the cylinder are shielded against incident foreign light normally. The car --50-- is with a loading mechanism --66-- provided. After by the idea of the compound laser beam --36-- a latent picture was formed, the cylinder with the help of an appropriate mechanism is sounded and the admission fixed. This can be accomplished either if the entire cylinder is provided with the complete latent picture or these steps become progressively made, while the admission still with the help of the laser beam --36-- one makes. In Fig.2 is the picture partial generator --26-- more in detail than represented in Fig.1. Jeweiliga the turning position of the wave indicating drivers --44-- is suggested at the left illustrated page and, as represented, over a line --70-- with the picture element generator --26-- connected, whereby this line --70-- over six counting steps an exhibiting counter --72-- and to a timer --74-- , that leads the address signals for the individual places of a memory --78-- (READ only MEMORY) determines, which will later still more near be described. It is to be called in memory that each microscopic picture part, which finds with the procedure according to invention for the setting up the picture and/or to its reproduction use exhibits a hexagonal basic form and that of surface particles of the photoelectric coating of the elektro58 of photographic material consists the individual elements, which can determine within that picture part information, which remains loaded after the exposure. The laser beams will unload the entire surface range of that microscopic picture part with exception of those ranges, which are to carry toners. These ranges will be designated in the consequence as black and/or black ranges for those surface particles keeping their load and white for the unloaded surface particles, although the actually applied toner another color exhibit can and if necessary also a reverse hue (thus hue of the unloaded ranges and hue remaining free of the loaded ranges) be made can. The picture parts, those of the picture partial generator --26-- perhaps in accordance with Fig.2 to be produced, should be examined in this stage of the explanations in connection with the Fig.4 and 5, so that is better understandable, which actually with the picture partial generator --26-- happens. In Fig.4 a field consisting of several picture parts is out-calm, from which one can assume that it represents a component the photoelectric surface of exhibiting receiver. The microscopic picture parts are hexagonal ranges, those in Fig.4 also --Pf to Pf2-- designated wurI0 that. Measure must understand that gedanklioh the entire surface of the photoelectric pushes into such hexagonal picture parts is divided. Of course are picture parts determining lines imaginary and represent only theoretical geometrical sample, which lets the way, in which the admission takes place, explain however better. The laser beams have the task to remove selectively load from the picture parts. The possibility of the Ladnngsentfernung is represented in this case by unloading elements, which outlined a circular exhibit and which fill out the entire interior of each picture part. Erfindungsgsmäß are arranged the picture parts transferred in interlinking rows, so that it can be accepted that the picture partial field fills out the entire surface of the elektrophotographlschen material. It was shown that the picture parts --Pi, P2 and P3-- with their upper and/or lower even sides into one another turn into. These upper course sides became also --80, B2-- designated. Also the picture parts following in the row, which were not continued to designate, are directly because of the preceding picture part. Intervening in the next picture partial row these picture parts are in the preceding row, thus in relation to the picture parts of the preceding row transferred, arranged, why the left volumes and/or extensions of the picture parts --P4, HP, P6-- to the picture parts --Pf, P2, P3-- attach, whereby for example the extensions --84,86-- the picture parts --P4, HP-- to the lines --80,82-- attach. The picture parts --PT, P8 and Pg-- lie in their vertical row on gleichBr horizontal height as the picture parts --Pi, P2, P.q-- and the picture parts --PI0, PII and Pf2-- lie same height as the picture parts --P4, P5 and/or P6--. The distance between the vertical center lines of the picture parts was designated in Fig.l with B and the distance between even edges with A. The Durohmesser of a entladharen element, that in the picture part --P2-- for example also --88-- one named, C one designated. Since the number of picture parts per cm, which is producible with the help of the picture partial generator according to invention, between 60 and BO/cm amounts to, results a diameter C between 64 and 48 per. The picture parts --HP, HP and Pg-- centers in them determined, that were numbered and as intersections between rows and lines are formed, those along and below the picture part --Pi-- were designated. In each picture part are nineteen of such centers, which are arranged in nine vertical rows and in six horizontal rows. Also as columns to characteristic vertical rows are present in each picture part between its lateral projections/leads, whereby it is accepted that all picture parts are oriented accurately directly, whereby their flat sides lie above and down and the extensions on the left and on the right, against what the horizontal rows are somewhat differently formed. With five rows, which exhibit Zentrierpunkte, these rows are within the edges of the picture part between the upper and untcrcn straight edge, against what the sixth row will never exhibit a center in a given picture part, because this row coincides with the lower even side of the Sechseckes. This row serves the spacer attitude for the relief, as will later still more near be described this. The descriptive Zentrierpunkte are the 54ittelpunkte of circular elements, how--88--, which will unload with the help of the laser beams can. As one can determine, the kreisf6rmige is element --88--, which corresponds to all other circular elements, largely enough that it intervenes additionally to its Erstreokung over a certain range within its picture part also still in neighbouring picture parts overlapping. Thus the circular element unloads --88-- not only the range of the picture part filled out by it --Pi--, but possesses also sections --S0 and 92--, it in the picture parts --Pi and P4-- unloads, if one draws mental a line between the Zentrierpunkten and sowoh! a complete sample plans, arises horizontal and diagonal lines out in their basic form hexagonal ranges, those in the picture parts --P5, P8 and P9-- was suggested, whereby these hexagons have naturally the characteristic that they are composed of equilateral triangles. Thus the unloading element becomes--88-- and/or each Ent! adungselement with the unloading of the range lying around its Zentrierpunkt six equilateral triangles around this Zentriarpunkt and six chord sections outside of mentioned the Sechseckes determined by the triangles unload. Because each circular element unloads the phetoelektrische surface of the elektrophotegraphischen material in same way, 18 circular ranges next to one another and the unloaded always overlap themselves. In Fig.4 the picture part has --HP-- from downside to seven circular elements arranged, in their outlined also --94-- was designated, whereby apparently überlappendeu the ranges can be determined. One can see besides the seven overlapping chord sections of the unloaded range, into neighbouring picture parts including the picture part --Pi-- substitute. To the Is explanation one can equate the complete unloadable surface of a picture part of approach the triangles, which are contained in the circular unloading elements. The more circular unloading elements in a certain picture part are present, the more exactly become the approach because of the overlap within this picture part. In the circular element --88-- became the equilateral triangles also --TH1 to TH6-- designated. With recent reference to the picture part --Pi--, in which the columns and rows were designated, one can state that n the columns --1 and 9-- an only le Zentrlerpunkt, in the columns --2,4,6 and 8-- ever two Zentrierpunkte and in the columns --3,5 and 7-- ever three Zentrierpunkte available slnd. These conditions are important for the picture partial generator and must be considered with placing the unloading elements. The compound jet --36-- 2s is involved in a Druchgang over the vertical column and writes these, whereby he must receive information for the determination of the Zentrierpunkte. This compound jet --36-- of a maximum of nine smaller jets will consist, which pass at the same time over the complete surface of a picture part. This presupposes that all are used these jets for each given Bildteßl, but the maximum number of jets, which work at each certain time at the same time, with these selected Umril form five will be, since, as was explained, at no more only time than five Zentrierpunkte are at the same time detectable. If one for example on the center line of the picture part --P9-- looks, then are here the Zentrierpunkte --8, flat steel bar, 10.11 and 12-- available, those in the columns --1,3,5,7 and 9-- are produced. The minimum number of at the same time effective jets zero will be of course. In summary can one to say that the vertical columns, on which Zentrierpunkte can be by the number of jets in a compound jet --86-- or a luminous beam to be determined. The rows are determined by the information, those from the information from the incoming goods! Len driver --44-- and the suggestion of the jets over the generator --28-- one receives, which will still more near be described. 4a in Fig.5 is another, from BildeIementen --P! 3 to P22-- formed field illustrates. In this case an unloading range, which results to circular elements from the unloading of thirteen, left a unentladenen range, to that in each case in the picture parts --PIS, FI6, PI7, PIe, PIg, F20 and P22-- is contained. One can assume that the entire surface ranges of the remaining represented picture parts were completely unloaded. The unentladenen ranges 4S in the individual picture parts became also --96,97,98,99,100,102,105A and 10SB-- designated. All with exception of the two latter are in the form and in outlined identically, whereby this outlined ziemlioh is irregular, but although is certain by the surrounding unloaded ranges. D e of differences between the first six of the ranges mentioned consist of that each range in another place is arranged in the picture part containing this range. With the BildS0 part --P16-- it results although the number of circular, unloaded unloading elements is equal as with all other picture parts that the total area of the ranges --1O5A and 1OSB-- is more gröfier than the total area of the unentladenen ranges in the other picture parts. Task of this design is it to represent that ent! adenen ranges in different places of a picture part for the achievement of different effects to be placed can and that for different effects also the unloaded and/or unentladenen ranges to be divided to be able. If for example a certain Eilddichte in one is wished surface which can be printed, over a large, many picture parts hands to comprehensive range, and which arise next to each other unloaded ranges in these picture parts with neighbouring picture parts, it could come to dark places, where none are desired or a raman effect could arise, whereby also heath disturbing factors can be at the same time present. For this reason are with the picture parts--PI6, PI7, PIe, P19, P20 and P22-- the ranges --98,97,98,99,100 and 102-- thus it distributes that between them large distances are present. The ranges --105A and 105B-- it is issued with one another a unentladenen BeI0 richly, which is somewhat larger than the other unentladenen ranges in Fig.5, ss that a subtle difference in the received density of the printed picture element achievement becomes. The different arrangement un ranges in the picture parts ntladenen after Fig.5 can by appropriate Steuereinrichtung8n be achieved, those in the Bildteilgsnerator --28-- are inserted. For example the output signal can be modified thereby that one plans sails, which are represented by signals, which are stored in the memory and/or memory of the generator and which informs the generator in such a way, where it must place the unloaded ranges for the achievement of certain results. Thus for each given desired picture density a multiplicity of different samples arises and these samples to know to be called up, whereby one builds different laws for the call either into the apparatus it is used or random signals and/or quasi Zufal] ssignale, which are called up from a given memory and/or by a random number generator are produced. This can eliminate unwanted optical effects. The signals can be steered and/or regulated as a function of many factors, which factors easily into the memory to be built to be able. For example the distribution of the unentladenen ranges in relationship with the total area of the unloaded range can be set, so that then, if this unloaded range is small, no so large distribution must be present in the arrangement of the unentladenen ranges. Differently printed can one to say that then, if only smaller, a small density is present exhibiting range it is not so important that unentladene ranges do not together-lie directly or close, as if a rough total range of small density arises. In accordance with l ig.2 it is suggested that the channel which is enough from the data source --24-- from a set of lines --Left, L2, L3…. LN-- exists, which form the entrance of a register. The lines make forming possible digital words from the source --22-- received information. The entrance at the source of information --22-- density information is contained and it can • 5 circle or another mechanism be present, in order to convert the density information into the binary words. The number of lines in the channel --24-- depends on the density scale, which is to be considered during the reproduction, whereby the quality of the reproduction depends directly on the number of gradients of the scale. According to invention the scale preferably considered with the apparatus has 32 stages or gradients, which can be considered by binary words with 5 bits, why the number of lines in the channel --24-- five one amounts to. The lines are with the Begister --eyelid-- connected and the information represented by the binary words becomes in each case with a-long of a word at the register --110-- coded. The Versohlüsselung takes place in agreement with an appropriate signal of a counter --72-- in the line --I12--, that in reverse of the signal generator --44-- the wave over the signal line 45--70-- one steers. In the Begister --Ii0-- coded information is used in order to address Gin sample for a Bildieil, that before in the memory --78-- one stored. With the memory it concerns a so-called ROM (rend only MEMORY). This selection finds at the address original lines --A01, A02, A0S…. A0n-- instead of. Thus the number of address original lines becomes equal the number of Eingangsleltungen --24-- its. Additionally to the address original lines of the register there are also lines --A0, AI and a2--, those of the six-level counter --72-- come. This counter --72-- on the binary number I one sets, if the binary data item in the register --110-- is coded. The reason for these six stages consists of that by it the presence of the rows I to 8 is determined, which were described in connection with Fig.4. Three addressing positions give the possibility of responding eight binary-addresses, by which in this case only six are needed. If signals of the wave signal generator --44-- on the line --70-- , then the six-step counter speaks in-long --72-- the binary-address by the counting step one on. These incremental steps address successively the appropriate numbers of the selected sample in the memory --78--. In this way the wave signal generator steers --44-- the unloading of the elements in each row (line) with each picture element. A sample selecting circle becomes additional --114-- in addition uses, around the localization of unloading in each Bildtei! to determine, in order to prevent raman effect or other unwanted sample connections l@ and/or concentrations of unentladener ranges. With the represented preferential execution form can over three Adressenmustezlinlen --AP1, AP2 and AP3-- by eight different samples for each different step or gradients of the density scale to be selected, which can produce the device. These samples can on the basis of a pre-determined program, after which Zufälllgkeit are selected and/or or in relation to the density within the surrounding ranges, in which the unloaded range will arise, in order to prevent so the Zusammenklumpen. Those the line --70-- of the signal generator --44-- the wave supplied signals become in an interval timer --74-- in addition uses, around an initiation signal --76-- as input signal for the memory --78-- to produce, which signal the exits --C1 to C9-- the memory activates. This Aus2@ of courses determines the signals, which produce the Zentrierpunkte of the picture parts in the cooperation with the signals of the signal generator of the wave. These signals --C1 to C9-- determine the column situation of the Zentrlerpunkte. Each signal is thus to one of the columns assigned, which were described in connection with Fig.4. The output signals of the memory --78-- are with appropriate oscillators --118-- coupled, which produce a certain frequency for everyone of the selected exits of the memory. The oscillator exits become into a sum network --118-- put. The signals from the memory are initiation signals and them select in each case those oscillators, which at a certain time in enterprise. Each single winner brings the oscillator which is because of its line into the switched on condition. If on a certain line no signal lies close, then also the oscillator which is because of this line is not switched on and does not become no Folgesignal into the sum network--118-- go off. The output signal of the sum network appears on the line --120--, with the electrooptical divert song --34-- is connected, which deflecting system of the Hauptstrahl --80-- the laser secondary jets absplittert or diverts, in order to receive, which in former times than compound jet --36-- or luminous beam was designated. This compound jet consists of jets, those from the memory --78-- withdrawing, the columns zugeordnoten signals correspond. The direct laser beam and harmonious and interfering radiating energy become from the compound jet --36-- with the help of the radiation molder removes, also --46-- is characteristic. In Fig.3 the Strahlenweg can --36-- are pursued, as he by the electrical epischen deflecting system --34-- goes out and by the radiation molder --46-- hlndurohtritt. The compound jet becomes first from a reflector --54-- in the direction of the car --50-- too diverted and meets then a second reflector --56-- at the car up, so that the compound jet runs now parallel to the adjusting path of the car. The car carries a reflector --48--, that the jets --36--, like this before already one described, directly on the photoelectric coating of the cylinder or the drum --38-- leads. The modulator --122-- a part of the deflection system for the jet and the single jets, since it is needed, received from it, is practical, in order to switch these jets off at the correct times einund, in order to obtain the unloading of certain ranges in each picture part. I r is steered time-dependently by the signal generator connected with the wave and is in Fig.1 Jm same block with the deflecting system represented. With the radiation extension member --124-- it concerns an optical system of lenses, which stops the fragmentation of the jets, in order to ensure the correct situation of these single jets, if they are supplied to the photoelectric coating of the cylinder. The way, in which the jets are bent, without they lose their integrity and their mutual allocation, are with those lines suggesting their ways in Fig.3 illustrated. Moir - and Bosettenmuster are avoided thereby that color excerpt plates are produced, which exhibit irregular and varying matrices of the printing elements, in order to correspond to each stage of the grey scale or the hue which can be printed. The elements of everyone a section of the admission of basic picture part, which are intended for the admission of color and/or printing-ink, are in such a way arranged that they interlink and overlap each other. Photograph parts asking picture parts are arranged likewise so that they interlink, I0 whereby the possibility of a Fluchtens of printing elements in horizontal direction and/or in vertical direction are avoided. The first stage of the grey scale, which after pure white follows, which is represented by not one printing element in a picture part (pixel), is received that a only one printing element in a given picture part at one of many different possible Stell5 len one puts down. This printing element is a result, which does not result, if one removed all other elements from the picture part, thus strictly speaking in the respective picture part on the spot set. Thus one receives this picture part thereby that one from a picture part, which contains for example 19 elements, with the help of which device of 18 elements removes. If one considers that the procedure according to invention on electrostatic way is managed and each picture part thereby will receive that one exposes a before loaded range on a photoelectric coating, whereby the impact of 19 jets will unload on the picture part the entire surface of this picture part of the radiating energy, SE that at all no load remains, then reached by the impact of 18 jets that all elements with exception of only one will unload and that this element is tonerable and can 23 a printing element reach. As it will be still explained later the simultaneous impact of 18 jets of not radiating energy is necessary, in order to expose these 18 partial elements for exposing the surface of a certain picture part, but the principle should be thus understood that a printing element will receive thereby that a load will not unload and the unloading of elements in the sense of a phctoelektrischen Beschlchtung works, to produce the non-printing surface particles of a picture part. Further stages of the grey scale are received thereby that one produces additional printing elements in the respective picture part, whereby these elements are intended usually neighbouring and overlapping, so that in each picture part a only one, printing element connected in itself will be present, which will produce a printed formation, the one 33 certain picture density determined. Even if it is simpler to plan the individual formation from several not unloaded ranges within the picture part it is more favorable under special circumstances, not the unloaded elements or ranges per picture element into several sections, e.g. two sections to divide in order to obtain sports club an intermediate step and/or an intermediate stage into the grey scale. With the education of the printing elements within the picture parts jeweile one knows a whole number of possible positions taken and these positions can be varied, so that the chances of the training of Moiraustern become very small. The use of a number of different samples and/or rests for placing the printing ranges in each picture part ensured, d& the irregular Yorm of the elements and the picture parts to a nearly coincidental placing of the points leads, which result in the printed result. The Verwendnng of the expression “points” for the printing results, which will receive with application of the invention, was made only because of the relief of the understanding, since the printing ranges differ in their form far away from the conventional Drnckpunkten, in certain way however equivalent to these points is, which admits with the conventional pressure and also with the electronic half-tone printing is. 5@ the multiplicity of the possible forms of the printing ranges and the samples of their arrangement within the picture parts is substantially larger than everything that admits so far with the state of the art when using points was. This is reached by which is used first of all a photoelectric Beschiehtung, for which dle invention is particularly favourable and which exhibits a substantially larger resolving power than other well-known photoelektrisahe coatings, why it makes it possible to sound very small unentladene ranges on their surface. These ranges will form the printing elements or formations. This makes in further consequence the use for a large number from elements possible to the education of a printing range in everyone of the descriptive microscopic picture parts, without as a result of it a noticeable waste in the picture resolution of the reproduced picture arises. This advantage is one the substantial distributes the invention article and arises additionally to the reduction and/or elimination of the Moir4-Interferenzmusters. The preferential execution form of the invention article sees each bildI0 of basic picture part for the education --19-- unloadable elements forwards, so that some hundreds different gradients of the grey scale can be produced. With such picture parts (pixel) and the different arrangements of the unentladenen ranges within the picture parts can over 30000 different samples and/or rests to be produced, so that an extent the density gradients is attainable, which never before reaches IS under use of conventional and well-known electronic procedures became, if one uses the conventional materials, which were at this time available. Besides the probability of the education is so far lowered by Moir& Interferenzmustern or Rosetten that these are practically imperceptible. Regarding the avoidance of Moir6-Mustern no actual necessity exists to make any corrections in placing the printing elements which result from the Ent2e load of circular elements in each picture part, if the density and the dissolution of the information which can be reproduced are low. This lets itself obtain from the triangle represented in Fig.6, whereby in the diagram on the abscissa the density is indicated in per cent and on the ordinate of the Informaticnsgehalt. A strichlierte line --130-- underneath the point of the triangle was eiugezeichnet, in order to indicate the border of an information content of approximately 25%. 2S the right point of the triangle means a Dichtewert ven about 3, which corresponds to the value jet black, against what because of the other basis point of the triangle the point zero is, which corresponds to the value pure white. The triangle after Fig.6 represents an approach typical information curve. It could be stated that, if the respective conditions at information content and density in the point of the triangle above the strichlierten line --130-- arises, the possibility of the occurrence of interference samples is given. Accordingly it is not necessary, the enterprise of the device according to invention by unity attitude of the sample voter --114-- to complicate, as long as the critical state is not reached. Thus the t4usterwähler for the selection of different samples from the memory is switched off, if the register --210-- it indicates that signals, 3S correspond to a small density or a high density, from the signal source over the channels --24-- in-long. This signal becomes over the channel --126-- supplied. It is stated that also different factors into the device --20-- to be inserted can, in order to steer and/or affect the printing elements, which are struck down at the cylinder. Among these factors refinement in the colour, in the Konturbil4Q dung, with shifting the Gesamtmusters, with the respective expenditure for book, with the Sflttigungseffekten etc. rank these refinement can into the picture partial generator be built. One of the substantial characteristics of the invention article consists also of that the production of the finished electrophotographic material, thus the Anfertlgung of a pressure plate od.dgl., can take place with a relatively high speed. For example the speed, with which the photoelectric coating will provide loaded and with the admission, can amount to 1500 lines/min. The drum, which carries the elektrophotographisehe material, rotary with 1500 Umdr/min and the car moves with a relatively high speed. The characteristic characteristics of the photoelectric coating are in such a way selected that them must be suitable for accepting a latent picture in nanoseconds. This characteristic is connected in such a way with a remarkable electrical anisotropy of the surface of the coating, yields ensured that the laid on picture elements keep their correct situation and form during that time, which passes between its attachment and sounding. Each line of Oberflächenladung would end in a Auseinanderfließen of the loaded ranges and in a destruction of the special form of the elements, so that the controls and attitudes are made in accordance with the invention, became useless. If one regards again the representation after Fig.4, one can state that in each hexagonal picture part --Pi-- etc. a large number of triangles, exactly 54, is present. The Dichtewert to avoid of the printing element determined by the picture part depends directly on the number of triangles and the supplying measures, which must be met, in order Moir6-Muster and interference formations. D esc measures can be met as a function of the number of triangles. The number of exposed triangles in a given picture part determines the combinations or possible different situations of the picture element in a given picture part, made of this number of three-sec. These combinations can be received by examination of the different Komhinatlonsmöglichkeiten in the Sechseok. The exact number of combinations can be prepared in a computer. Typical words are indicated in the consequence. For a only one exposed triangle up to 5 exposed triangles there are no combinations, which can be selected in only one picture part. Here placing in dependence must met with the effect of the picture-basic ranges in neighbouring picture parts. For an unloaded range from 6 triangles there are 19 combination options of the arrangement within a picture fig. With 7,8,9,11 and 15 unloaded triangles there is again no Kombinationsmöglichkeßten in only one picture part and it is again neighbouring picture parts to be considered here. With 10 exposed Dreieeken there are 42 possible combinations in the arrangement. In the meantime naturally the Weißanteil, which was produced, rose 20 triangles exposed by zero or jet black with no 8ntladenen triangle to 18,52% white with. With the help of a computer a program and/or a pattern for all values and combinations can be prepared. For example 16 exposed triangles result in 29.63% white and 498 combinations or possible arrangements of the triangles. 39 exposed triangles result in 72.22% white and 30400 different combinations or arrangements. The use of the expression “arrangement” in the description is not to mean that it concerns complete discrete positions here inside the picture part, to receive but that a certain number of different ways is given in the combination of such triangles, in order the complete exposed range in each case. Since there are no differences in the actual form with each these combinations, one could also say that each combination takes another position. There should be going by agreement that at the electrophotographic material when taking out of the device the expensive is already fixed. The material can be based on metal or transparent plastic. In order to make of it a pressure plate, the electrophotographic material is immersed into a bath from a material, which makes the sounded elements of oil and fat water-repellent wettably, but (hydrophob), against what the nichtgotönten ranges oil and fat are kept water-attractive pushing off, but (hydrophilically). The material is provided with register holes or slots, in order to make possible and find for the pressure of the collecting main use carried by it its fitting in there into a Druekerpresse, i.e. an offset printer and/or a lithographic printer. Different aids to the guarantee of an exact adjustment cannot be built to anything into the plates, but have this with the invention to do. The available device is particularly for the colour print and suitable for the color reproduction, since the master artwork or the original witnesses scanned and binary words by color filter er4§ become can, without one manufactures color excerpts. The different Druekplatten is made more favorably of the memory for the binary words, separated than from physically by Aufrasterung color excerpts manufactured. Preferably the electrophotographic material is installed on a rotary drum. This makes possible a favorable arrangement and movement of the car and also a favorable production of signals in the signal generator connected with the wave for control for the impact of the device. It is naturally also possible to locate the electrophotographic material flat on Flaohbett recording equipment. An adjustment to this kind of the device leads the attachment lector to mechanical problems, which arise as a result of the necessity, --48-- to adjust for the laser beam via the surface of the e of ektrophotographischen material and produce and/or take up suitable signals, which intend the position of the luminous beam for each time. In summary can one to say that the printing are irregular ranges for each density degree of the grey scale in their geometrical outlining form due to the way, in which they are manufactured that the irregularity is strengthened thereby, wei! it different places in each picture part gives, where these ranges can be arranged and that the different samples of neighbouring picture parts and the interlinking arrangement of these picture parts a still larger irregularity causes, without by it the resolving power, which I0 grey scale or the quality of the received, printed picture was unfavorably affected. FATENTANSPBÜCHE: I. Procedure for the production of photographs on elektrephotographischem material, in particular for the production of pressure plates od.dgl., whereby the material is loaded, a latent picture from load groupings is formed by purposeful unloading of the loaded surface by means of next to one another and to produce parallel a Strahl5 led across it in a certain direction in lines lenbündels and this latent picture is developed, by it that the luminous beam from several jets is marked formed, modulation signals is produced and by Anund disconnection of certain jets of the bundle during its adjustment movement over the lines a modulation is made, in order successive series picture parts (pixels) which in itself exhibit discrete groupings of loaded and unloaded picture elements, whereby each picture part of pixel) one Welfare range of the admission essentially represents, in that surface portion of the group of the loaded picture elements remaining after the passage of the luminous beam to that desired Bildbzw. Color density of this picture element is proportional, dal] the total admission by the sum of all picture parts in the entire area is thus formed. 2. Procedure according to requirement I, thereby characterized that the electrophotographic material in form of a cylinder is planned and the scanning with the ray of light in the form is made that the luminous beam in spirals next to one another is adjusted via the cylinder. 3. Procedures transferred after requirement I or 2, by it characterized that each picture part exhibits the geometrical basic form of a Sechseckes and the picture parts of neighbouring lines against each other 31) interlink. 4. Procedure after one of the requirements 1 to 3, by characterized that the unloadable picture elements in their basic form are circular and see within the surface of each picture part to overlap, whereby the number of picture elements and their arrangement are so selected in the picture part that with unloading all do not hildenden a picture part picture elements in this picture part loaded ranges remain. Procedure according to requirement 4, by it characterized that the picture elements of a picture part overlap the volumes of benaehbarter picture parts, 6th procedures according to requirement 3, by characterized that the jets are essentially normally to the lines abstandsweise arranged, so that they can unload circular two dimensional elements in their basic form around unloading centers those in lateral distribution in each Bi] dteil along one to the respective line, in which the picture part lies parallel line lie can, whereby the distance of the unloading centers in each picture part is present in line direction also and the unloading centers of individual picture part arise along a row in different columns and along these columns in the way that the unloading centers lie there into different 4s rows, where more than one center is present in a column of only one picture part, so that the unloading centers in each Bildtei! Hexagon arrangements determine, which are arranged within this picture part the Sechseek of the picture part similarly and. 7. Procedure according to requirement 6, by the fact characterized that the circular unloading elements exhibit diameters of such a size that they overlap themselves slightly and the SE completely unloads surface of a picture part, if all unloading elements within the Bildteilfel