Патент USA US2292521код для вставки
Aug. 11‘, 1942. ' 2,292,521 J. HORN; ' APPARATUS vFOR MAKING PHOTOGRAPHIC COPIES Filed July 6, 1938 ' - v4 Sheets-Sheet 1 INVENTOR 270.557: ?o/e'lv Hi5 ATTORNEYS‘ Aug. 11,1942. ' HORN V 7 2,292,521 ‘APPARATUS FOR MAKING PHOTOGRAPHIC COPIES Filed July 6, 193a - . ' '4 Sheets-Sheet 2 INVENTOR v JOSE}: Hoe/v B6422?!) gym» . HIS ATTORNEYS Aug- 11,1942- , , J. HORN ‘ ' 2,292,521 " APPARATUSFORj/IAKING PHOTOGRAPHIC COPIES ‘Filed July 6- 1938 / .4 Sheets-Sheet s 1 BMW HIS ATTORNEYS Aug. 11,1942. J. HOiRN ‘APPARATUS FOR manna ' 2,292,521 IIIOTOGHAPHIC COPIES Filed July 6' 19-38 4 SheetsI-Sheet 4 /8 44» INVENTOR ‘759557- Hoe/v MW Hls . ATTORNEYS Patented Aug. '11,‘ 1942 r 2,292,521" ; UNITED (STAT Es I PATENT 0 FFICE _ 4 2,292,521 APII’ARATUS FOR MAKING PHOTOGMPHIC COPIES ' . Josef Horn, Wiesbaden-Biebrich, Germany, as signor, by mesne assignments, to Helge Sven- , ' son, Goteborg, Sweden - ‘ - , ApplicationlJuly c, 1938. Serial No. 217,659 ~ GermanyJuly 19, 1937 - _. 4 Claims. (01. 271__w ' The,invention relates to a device for making a throttle valve or ?ap may be used. ;It is pre photo copies, particularly for a device suitable ferred to, employthe samé fan or like device for for- the preparation of diazo types. By means of supplying the blast air to the nozzle and, for suc the new device both the ?ghting or exposure tion in the suction table. . and the developing processes can be carried out 5 Another object of the invention is a rotating in one working operation. v circular brush which rotates oppositely to the One object of the invention is an apparatus for direction of movement-of the copy, and sweeps the exposure of light sensitive material. Another the copy with its brushes. This brush may‘be object of the invention is an apparatus for the used instead of the nozzle referred to. development of the exposed material. A further 10 A particularly reliable separation of copy from v object of the invention is a suction table over the original may be attained by combining- the which runs a porous transport or conveyor band. ‘ This suction table is so arranged that the. ap . pertaining transport band conveys the copies above described methods and using in addition to ' a second suction table, an air blast nozzle and/or rotating brush; leaving the exposure apparatus to the developing apparatus.- The exposure apparatus is preferably the following I description. provided in the usual manner with a‘ band con ' v being suitably arranged for this purpose. ' Another object of the invention is a second suc tion table over which too a porous transport band runs. Thissuction‘ table is used for the separation of the original from the copy adher - . I I‘ - ‘ a A constructional form ofthe-invention is illus f trated by way of example in the accompanying In that case the same transport band _- may be used also for the suction table,.the latter veyor. _ Other objects of the invention will be seen from drawings. Fig. 1 is a front elevation of the ap 20 paratus. Figs.‘ 2 and 3 are two‘ side-elevations. Fig. 4 is a' section on'line H ofFig. 1. The modi?cation shown‘ and described speci?cally is, >however,,not intended to in any way limit the scope of applicant's invention. ing to the?rst'mentioned suction table and for 25 ' _In the drawings. the numeral I (Fig. 4). indi carrying away the original. As the copy and the cates sources of light, for‘ instance arc lamps or original usually adhere to one another rather mercury vapour lamps. The light emitted by strongly owing to the occurrence of electric these sources falls upon a bent glass plate 2. forces, a fairly considerable force is required for the separation. The second suction table is pref erab‘ly so arranged that the ‘suction ‘surfaces of re?ector I is ?xed by means of an angle iron 4 to a ‘casing wall I. Aporous transport band 6 - the two tables face one ano'ther,'the tables being A" ' " runs over guide‘rollers‘ ‘I, 8 and 9, a tension roller ' ~ so arranged at an angle as to converge towards all and a suction table II, and is pressed ‘against the glass plate 2. The band- may, for instance, one another in the form of an arrow. The point . be made of felt or a ?nely perforated rubber of the arrow should then‘ be arranged close to the 35 band. Tensioning device I! is of the usual con point at which the copy and the original leave struction. The suction table II which is-prefer the exposure apparatus. Instead of separating ably providediwith a slightly convex suction sur the original from the copy‘ by suction, other, ' face, is; also constructed in the usual manner; It means can be used for the separation of the consists substantially of a sheet iron box, the original from the copy, for instance compressed 40 operative side of which is perforated. The in air or other gas may be blown between the, two. Inv consequence of‘ this a further object of the invention is an air blast nozzle arranged in‘ the . vicinity of the suction table, which acts upon the ' terior of the box is connected by means of a duct ' IS with a fan “or other suction producing de vice. Another’porous transport band I! runs over rollers I6 and I1, tensioning roller I8 and a _ copy, in such a‘manner that theair jet-issuing 45 second suction table‘ 19, and is pressed upon a part of its path-against the transport band ‘6. preferably the leading edge of the copy ‘(in the The suction table ll is connected by means of a A ‘ direction of‘ movement of the copy). The suction pipe 1| with the suction device It. The numeral from the nozzle is blown against an edge, and table is then preferably so arranged that the 30 indicates means for fixing the suction tables. _ original detached from the copy, can freely fall 50 A developing apparatus 21 comprises as an essen down under the action of gravity. The non-1e tial part a developer chamber 2| with perforated referred to is preferably provided with a dis- ' charge slot which extends over the whole width top plate‘ 22. An ammonia solution is evaporated by means of an ‘electric heater It in a trough 23. . of the suction table. It is advisableto arrange The ammonia gas is further heated by heaters, the nozzle turnably. For controlling the air blast. V55 25. The transport band "which runs over roll 2,292,521 a developing liquid may, of course, be used if de sired. The copy and original respectively are original is carried away by the band ll and drops upon the delivery plate It upon which it slides to ‘the point D leaving then the apparatus. The copy is further transported by the trans port band‘ i and travels guided by the guide mem ber 31 to the developing machine. After passing through the developing machine, the finished of a tensioning device 36 against the transport band 26. A scraper 31 bears with its edge against It, to enable the copy, which, in practice, pro iects beyond the original, to be sucked in a re ers 21 and II, is pressed against the perforated top plate 22 of the ammonia container. The roll er :1 is constructed as a tensioning roller. In stead of the illustrated developing device, any other suitable developer using developing gas or copy drops into a chute constituted by the guide guided by guide members II, 32 and a made, for member 32, from which it is taken away. Pref-. instance, of sheet iron. A roller II‘ is rotatably mounted upon lever 35 which is pivotally attached 10 erably the suction force of the suction table II should be greater than that of the'suction table to shaft 64. This roller :4 is pressed by means the transport band 6. The various transport bands are driven by a motor 38. w liable manner by the suction table II. The suc 15 tion forces of both tables may be regulated by A table 39 is provided for facilitating the in sertion of the original and the copy into the apparatus. The developing gas is produced from built-in throttle valves or other means. v I claim: 1 ' , i. In a machine for printing. and developing photo copies, a device for separating the original a'solution contained in a container 40. The solu exposed copy which comprises a suetion is supplied by means of ‘a pipe ll to the 20. >i'rom'the tion table, a porous conveyor‘ adapted to trans trough 23. ‘A valve 60 is provided with a set screw port the exposed copy over said-suction table, a 8| by means of which ‘the supply of the solu further suction table and a porous transport band tion of the developing gas to‘the trough 23 can in combination with this suction table, the last be regulated. The shafts of the tensioning rollers l8 and 21 are mounted upon levers M and I5 25 mentioned suction table being so arranged that it , tumable about pivots l2 and 43 respectively. The ' rollers may be adJusted in'- known manner by means of setting devices 46 and 41 respectively. is capable of separating the original from the copy acted upon by the first mentioned suction table. . 2. A device according to claim 1 wherein the suction table which acts upon the photo copy has mit drive from motor 38 to the rollers by means 30 greater suction power than the suction table of chains 55 and 5B which are kept under ten acting upon the original. ' I sion by sprocket wheels 51- and 58, respectively. 3. In a machine for printing and developing The temperature‘of the developing gas is indi Sprocket wheels I8, 49. 50, 5|,- 52, 53 and 54 trans cated by a thermometer 59. a photo copies, a device for separating the original The mode of operation of the described ap 35 from the exposed copy which comprises a suc tion table, a porous conveyor adapted to transport paratus is as follows: The light sensitive paper the exposed copy over said suction table, a further ' and the original from which a copy is to be pro suction table and a porous transport band in com duced, are placed upon the .table 39. The intro bination with this suction table, the last-men duction of the copying paper and original into tioned suction table being so arranged that the the exposure device takes place at the point A. tables converge like a V at the point where they The copy and the original are then moved for ?rst come'into contact with the photo copy or ward between the glass plate 2 and the transport the original respectively, the suction faces of the band 6, exposure taking place at the same time. At the point 13 exposure is completed. _ Copy and original move from this point, further be- ' tween the transport bands 6 and i5. Underneath the roller 8 separation of copy and original is ef fected by the action of the suctionztables. The two suction tables facing one another. ~ 4. A device according to claim 3 wherein the porous conveyors passing over the suction tables are of perforated rubber. ’ - JOSEF HORN.