EP0000690B1 - Vorrichtung für die Röntgenfotografie - Google Patents

Vorrichtung für die Röntgenfotografie Download PDF

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Publication number
EP0000690B1
EP0000690B1 EP78100141A EP78100141A EP0000690B1 EP 0000690 B1 EP0000690 B1 EP 0000690B1 EP 78100141 A EP78100141 A EP 78100141A EP 78100141 A EP78100141 A EP 78100141A EP 0000690 B1 EP0000690 B1 EP 0000690B1
Authority
EP
European Patent Office
Prior art keywords
film
mounting frame
backing plate
sheet
front sheet
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
EP78100141A
Other languages
English (en)
French (fr)
Other versions
EP0000690A1 (de
Inventor
Gunter Schmidt
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
EIDP Inc
Original Assignee
EI Du Pont de Nemours and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by EI Du Pont de Nemours and Co filed Critical EI Du Pont de Nemours and Co
Priority to DE8080107552T priority Critical patent/DE2862448D1/de
Publication of EP0000690A1 publication Critical patent/EP0000690A1/de
Application granted granted Critical
Publication of EP0000690B1 publication Critical patent/EP0000690B1/de
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/04—Holders for X-ray films
    • G03B42/045—Holders for X-ray films apparatus for loading or unloading the holders
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
    • G03B42/00—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means
    • G03B42/02—Obtaining records using waves other than optical waves; Visualisation of such records by using optical means using X-rays
    • G03B42/021—Apparatus for direct X-ray cinematography

Definitions

  • the invention relates to a radiophotographic unit for use in taking X-rays, including a mounting frame, a flexible X-ray transparent front sheet, a backing plate behind the front sheet, at least one intensifier screens and pressing means which hold the film to the at least one intensifier screen.
  • a radiophotographic unit is known in accordance with the prior art portion of claim 1 (DE-A-2,123,208) in which one side of the front sheet is held to the main frame. The other side of the front sheet is held by springs and the front sheet is moved towards the curved backing plate by cylinders and rods. There is a danger that successive films will when exposed not be located exactly in the same manner in view of the asymmetric mounting of the front sheet which can cause relative movement between the front sheet and the backing plate when both are pressed together.
  • US-A-3,233,101 discloses a radiophotographic unit with pressing means which press the film between two rigid plates. One of these plates is moved by rollers. The rollers engage the rigid pressure plate near the corners so that the pressure force is concentrated on the engagement points of the rollers and there is the danger that in the middle area of the pressure plates air is entrapped between the intensifier screens and the X-ray film sheet.
  • GB-A-1,362,772 discloses a radiophotographic unit where pressure is applied to the middle of the backing plate to curve it towards the front plate to clamp the film.
  • the backing plate includes cam followers which ride along cam surfaces to press the backing plate against the front plate. Because of this there is relative movement of the backing plate versus the front plate in the plane of the backing plate so that there is the danger of misalignment of the X-ray film.
  • the invention solves the problem of how to design a radiophotographic unit of relatively simple design, which can hold a film in intimate contact with intensifier screens during exposure, and which enables the insertion of a film between the intensifier screens and the removal therefrom in a simple manner.
  • the pressing means for holding the film against the intensifier screens includes a flexibly resilient backing plate behind the film-screen sandwich and a flexible front sheet lying in front of the film-screen sandwich, with the opposite sides of the flexible sheet fastened to a mounting frame.
  • a vertical pressing member With the opposite sides of the flexible sheet held in the mounting frame, a vertical pressing member is moved against the middle of the backing plate to bend it forward and push the film-screen sandwich into a curve that holds the film and screens in intimate contact.
  • a film sheet can be fed between the intensifier screens or an exposed film sheet can be allowed to drop out from between the screens by withdrawing supporting pins that would otherwise support the film.
  • the film dispenser is subject matter of European Patent Application 80 107 552.4.
  • Fig. 1 illustrates a chest X-ray unit 10 which includes a main frame 12, an exposure apparatus 14 mounted along the frame for holding a sheet of film 16, a dispenser 18 above the exposure apparatus for dispensing the film into the exposure apparatus, and an exposed film receiver 20 located below the exposure apparatus for receiving the exposed film.
  • the unit is prepared for operation by first loading a bulk film magazine 22 into a magazine-holding portion 24 of the dispenser. Then, a handle 26 on the main frame is pivoted to an upward position 26u to tip back a mounting frame 28 of the exposure apparatus 14 to a position for receiving a film from the dispenser, and a control on panel 30 is operated to cause the dispensing of a film into the exposure apparatus.
  • the handle 26 is moved into a downward position 26d which causes the film 16 to be held in the exposure apparatus closely against the intensifier screens. A patient then can be positioned in front of a cover 27 on the exposure apparatus 14 and an exposure made. Finally, the handle is moved up to its central position 26 and the film 16 drops down into the receiver 20.
  • Fig. 7a illustrates the arrangement of elements adjacent to film 16 in the exposure apparatus 14.
  • the film 16 is sandwiched between a pair of intensifier screens 32, 34, and the screen and film sandwich is, in turn, sandwiched between a flexible front sheet 36 and a resilient backing plate 38.
  • the intensifier screens can be permanently attached to the flexible front sheet and the backing plate, respectively.
  • the intensifier screens 32, 34 In order to obtain a uniformly full exposure of the film 16 using a minimal level of X-rays, the intensifier screens 32, 34 must be held in face-to-face contact with the film at all areas of the film. This must be accomplished without using a metal plate or other similar member in front of the film that could adsorb a significant portion of X-rays.
  • Fig. 1A illustrates the basic manner in which the film 16 is held tightly to all areas of the intensifier screens 32, 34.
  • the backing plate 38 is constructed of a flexibly resilient material such as an 0.1 inch (2.54 mm) thick magnesium plate.
  • the front sheet 36 is constructed of a tough, flexible plastic such as Mylar@ polyester film.
  • the opposite sides 40 of the front sheet are wrapped somewhat more than 180° around a pair of vertical mounting rods 42.
  • Each mounting rod is held in a hole presented by a pair of grooves 44, 46 formed respectively in inner and outer bars 48, 50 of the mounting frame 28.
  • the extreme sides of the front sheet 36 are wrapped around thin retaining rods 52 which more securely hold the sides of the front sheet around the mounting rods 42.
  • An elongated vertical pressing bar 54 extends behind the middle of the backing plate, halfway between the opposite sides of the front sheet.
  • the pressing bar 54 When the pressing bar 54 is moved forwardly, in the direction of arrow F, it bends the backing plate 38. Since the opposite sides 40 of the front sheet 36 are prevented from moving forwardly, the backing plate, intensifier screens, film and front sheet are all pushed into a gentle curve (Fig. 7b), with the intensifier screens 32, 34 and film 16 between them pressed into intimate contact at all areas of the film. The intensifier screens then can aid in achieving uniformly full exposure of the film.
  • the pressing bar 54 is attached to a first elongated channel member 56 which has a channel-like form. As shown in Fig. 5, the first elongated member 56 carries a pair of rollers 58, 60 which bear against a rearward channel member 62.
  • the second elongated member 62 is also in the form of a channel and has a pair of inclined slots 64, 66 at its upper and lower ends which receive a pair of cams 68, 70 fixed to the mounting frame.
  • a chain 72 is provided to pull down the second elongated member 62 against the bias of springs 73 (Figs. 2 and 3).
  • Springs 73 extend between the fixed rod that mounts cams 68 and a rod 75 that extends through the flanges of the second elongated member 62.
  • the cams 68, 70 force the second elongated member to move forward, to push the rollers 58, 60 forward, and therefore to move the first elongated member 56 and pressing bar 54 forwardly.
  • Fig. 2 shows that the chain 72 that pulls down the second elongated member 62 extends around a rotatable pulley 74 and up to a tensioning pulley 76.
  • the tensioning pulley 76 is fixed to an operating shaft 78 to which the handle 26 is fixed.
  • Fig. 6 shows the three positions 28a, 28b, 28c of the mounting frame.
  • the top of the mounting frame is tilted back to receive the film 16.
  • the mounting frame is vertical and the intensifier screens are held tightly against the film in preparation for exposure of the film.
  • the mounting frame is vertical, but the film is loosely disposed between the intensifier screens so that the film 16 can drop down between a pair of ro!lers 80 in film receiver 20.
  • Fig. 3 shows a cam 82 which is fixed to the operating shaft 78 and which controls backward pivoting of the mounting frame 28.
  • shaft 78 rotates and the cam 82 assumes position 82a; then, the mounting frame 28 can pivot back about an axis 84 to the position 28a.
  • the space between the intensifier screens is aligned with a guideway 86 through which a sheet of film is dispensed.
  • Springs 88 bias the top of the mounting frame rearwardly to assure such tipping.
  • the shaft 78 is not turned far enough for the chain 72 to be pulled tight.
  • the cam still holds the mounting frame upright, but the tensioning pulley 76 on the shaft is then rotated far enough to pull the chain 72 tightly enough to pull down the second elongated member 62 so as to cause its forward movement that holds the film in intimate contact with the intensifier screens.
  • the handle 26 and cam 82 are moved to their middle position and, as shown in Fig. 7c, a pair of film-holding pins 83 are moved back to allow the film 16 to drop into the exposed film receiver 20 (Fig. 1).
  • Pins 83 extend laterally from arms 87 that are pivoted on a shaft 89. Arms 87 have tabs that engage stops on catches 90 that are pivoted on a shaft 91. As the elongated members 56, 62 are moved rearwardly, after an exposure, catches 90 pivot arms 87 sufficiently to move pins 83 out from beneath the exposed film 16 (Fig. 7c). After the exposed film has dropped to receiver 20, the operating handle can be moved to position 26u. With the mounting frame in position 28a, another film can be dispensed through guideway 86. As the frame moves to position 28a, the ends of catches 90 engage shaft 78 and the catches are pivoted sufficiently to move the stops away from the tabs on arms 87.
  • arms 87 swing forwardly in response to the action of springs 92 and pins 83 move into their film-supporting position (Fig. 7a).
  • the operating handle is moved to position 26d.
  • the elongated members 56, 62 move forward, and the intensifier screens move together (Fig. 7b).
  • the stops on catches 90 fall in behind the tabs on arms 87.
  • the intensifier screens 32, 34, with the film 16 therebetween can lie at least about three inches forward of the dispenser 18, or at least the bottom portion thereof, where the head of a patient would be positioned during the taking of a chest X-ray.
  • handle 26 is moved to its central position. Rearward movement of elongated members 56, 62, responsive to the action of springs 73, also moves catches 90, arms 87 and pins 83 rearwardly. As noted previously, withdrawal of the pins 83 (Fig. 7c) releases the exposed film to receiver 20.
  • Figs. 8-16 illustrate details of the film dispenser 18 which dispenses one film at a time into the exposure apparatus.
  • the holding portion 24 of the dispenser has a cover 100 that can be swung open to receive the film-holding magazine 22.
  • the film magazine 22 has a lid 102 at the top that can be opened to receive a stack of film sheets in a darkroom and which then can be closed to make the magazine lighttight.
  • the magazine 22 encounters a pair of pins 104 that open a light seal at the bottom and a receptacle 106 that receives a mating plug on the magazine.
  • Fig. 8-16 illustrate details of the film dispenser 18 which dispenses one film at a time into the exposure apparatus.
  • the holding portion 24 of the dispenser has a cover 100 that can be swung open to receive the film-holding magazine 22.
  • the film magazine 22 has a lid 102 at the top that can be opened to receive a stack of film sheets in a darkroom and which then can be closed to make the
  • FIG. 10 illustrates the light seal 108 at the bottom of the magazine 22, and shows the pair of rods 110 that are attached to the light seal.
  • Fig. 12 illustrates the magazine 22 installed in the holder portion 24 of the dispenser, showing how the pins 104 on the holder depress the rods 110 to slide the light seal 108 against biasing of springs 112 so that a film sheet 16 can pass down through the dispenser.
  • the magazine 22 includes a vertical pusher plate 114 whose upper end carries a pair of guides 116 that can move forwardly along downwardly inclined guideways 118 in a pair of guide plates 120.
  • the pusher plate 114 is therefore urged by gravity to move forward, to push a stack of film 16S forwardly and down along an inclined support plate 122.
  • the film nearest the support is caught between a dispenser roller 124 and blocks 126 at the bottom of the pusher plate.
  • the blocks 126 which are especially useful for pushing the last films of the stack into the roller, are constructed of low friction material such as a Delrin@ acetal resin.
  • the low friction material of the blocks 126 aids them in sliding down along a lower support plate 127 and in assuring that when the blocks push the last film against the drive roller 124 the blocks do not retard the film from moving down.
  • the forward edge 122e of the upper support plate 122 is accurately spaced from the drive roller 124 to form a throat 129 between them that permits only one sheet to pass down through the throat.
  • the edge 122e may be spaced a distance such as twelve mils 0.305 mm from the roller.
  • the edge 122e may be formed of a low friction material such as a Teflon@ fluorocarbon resin to facilitate the passage of film thereby.
  • the magazine is normaliy loaded with film in a darkroom by laying the holding portion horizontally and then laying a stack of film on the pusher plate 114.
  • the holding portion is turned to the vertical as shown in Fig. 10, or is moved around, it is possible for more than one sheet to be pushed into the space above the support plate edge 122e and the roller 124.
  • a backup member 128 is provided which can push the stack of film rearwardly, to push back sheets which have started to gather in and above throat space 129 and the roller.
  • the backup member 128 is pivotally mounted at 130 and has a button 132 protruding from the film magazine to enable a technician to press the button after he has loaded the magazine 22 in holding portion 24.
  • the backup member is also useful in that when its end 128e pushes back the stack and quickly releases it, the member bends the sheets and "shakes up" the stack. Any film sheets which have not fallen down firmly onto the support plate 122 will do so, and the film sheets will lie in a more uniform arrangement for reliable dispensing.
  • a drive pin 134 (Fig. 15) at the end of the drive roller 124 lies in the path of a drive tab 136 which lies on a motor driven wheel.
  • the roller 124 is rotated, as indicated in Fig. 10, to move down one film sheet past a microswitch 138, the thin arm of the microswitch deflecting out of the way of the film.
  • the film then passes through a guideway 140 and through the guideway 86 into the exposure apparatus 14.
  • Microswitch 138 is connected to a power source and to control panel 30 through receptacle 106.
  • the invention provides an X-ray unit which enables the daylight loading of one sheet at a time into an exposure apparatus and the tight holding of that film sheet between intensifier screens in the exposure apparatus, all with a relatively simple and low cost apparatus.
  • the close holding of the film sheet between the intensifier screens is accomplished by the use of a flexible plastic sheet, whose opposite sides are securely held, a resilient backing plate, and a pressing bar that pushes along the center line of the resilient backing plate to deform it forwardly.
  • the mounting frame that holds the flexible front sheet, backing plate, and pressing bar is pivotally mounted to enable its top to pivot back to receive a new sheet of film from .a dispenser located far enough behind the exposure apparatus to avoid interference with the taking of chest X-rays.
  • the combination of a pusher plate and backup member which assure a uniformly held stack of films sheets, allows for reliable dispensing of one sheet at a time.

Claims (5)

1. Eine Vorrichtung für die Röntgenfotografie, mit
einem Montagerahmen (28),
einer flexiblen, für Röntgenstrahlen transparenten Frontplatte (36), deren gegenüberliegende Ränder (40) in dem Montagerahmen (28) festgehalten sind,
einer Stützplatte (38), die hinter und im Ruhezustand im Abstand von der Frontplatte (36) liegt,
wenigstens einer Verstärkerfolie (32, 34), die zwischen der Frontplatte (36) und der Stützplatte (38) angeordnet ist und in flächenhaftem Kontakt mit einem Filmblatt (16) liegt und
Andruckeinrichtungen, die den Film (16) eng anliegend an alle Bereiche der Verstärkerfolie (32, 34) halten, dadurch gekennzeichnet,
dass die gegenüberliegenden Ränder (40) der Frontplatte (36) so festgehalten sind, dass sie an einer Bewegung nach vorne gehindert werden;
dass die Stützplatte (38) flexibel federnd ist und
dass die Andruckeinrichtungen hinter der Stützplatte (38) ein erstes längliches Bauteil (56) aufweisen, das sich über die Länge der Stützplatte (38) erstreckt, so dass, wenn das erste längliche Bauteil (56) gegen die Stützplatte (38) gedrückt wird, die Stützplatte (38) zur Verstärkerfolie (32, 34) hin gebogen wird und das erste längliche Bauteil (56) dann von der Stützplatte (38) weg bewegt wird, wodurch der Film (16) freigeben wird.
2. Eine Vorrichtung wie in Anspruch 1 beansprucht, bei der
das erste längliche Bauteil (56) an seinen Enden Rollen (58, 60) trägt und
die Andruckeinrichtungen ferner ein zweites längliches Bauteil (62) aufweisen, das sich gegen die Rollen (58, 60) abstützt und so an dem Montagerahmen (28) befestigt ist, dass es sich auf einer schiefen Ebene bewegt, während es gegen die Rollen (58, 60) drückt, sowie Einrichtungen (72), die mit dem zweiten länglichen Bauteil (62) verbunden sind, um es längs der Erstreckung des ersten und zweiten länglichen Bauteils (56, 62) und nach vorne gegen die Rollen (58, 60) zu ziehen.
3. Die Vorrichtung, wie in Anspruch 2 beansprucht, mit
einem Hauptrahmen (12);
einer Filmausgabeeinrichtung (18), die in vertikaler Stellung an dem Hauptrahmen (18) oberhalb des Montagerahmens (28) befestigt ist, wobei die Ausgabeeinrichtung (18) einen Speicher (22) zum Halten einer Mehrzahl von Filmblättern (16) und einen Mechanismus zum Ausgeben eines Filmblattes (16) nach unten durch eine Öffnung nahe dem Boden der Ausgabeeinrichtung aufweist und wobei
der Montagerahmen (28) an dem Hauptrahmen (12) um eine Kippachse (84) verschwenkbar befestigt ist, die horizontal durch die untere Hälfte des Montagerahmens (28) verläuft, um ein Kippen des oberen Endes des Montagerahmens (28) von einer aufrechten Stellung (28b) zurück in eine Auffangstellung (28a) zu ermöglichen, in der der Raum zwischen der Stützplatte (38) und der Frontplatte (36) mit der Öffnung ausgerichtet ist, um einen Film (16) hieraus aufzunehmen;
Federn (88), die so gegen den Montagerahmen (28) drücken, dass dieser zurück in die Auffangstellung (28a) kippt;
einer Welle (78), die drehbar an dem Montagerahmen (12) befestigt ist und einen Nocken (82) in einer Höhe oberhalb der Kippachse (84) trägt, wobei der Nocken (82) so bewegbar ist, dass er den Montagerahmen (28) in seine aufrechte Stellung (28b) drückt oder ein Zurückkippen des Montagerahmens (28) zulässt, wenn die Welle (78) in eine erste bzw. zweite Orientierung gedreht wird, und
wobei die Zugeinrichtung (72) an der Welle (78) befestigt ist und straff ist, wenn die Welle (78) zum Aufrichten des Montagerahmens (28) in die erste Orientierung gedreht wird, und die Spannung in der Zugeinrichtung (72) aufgehoben wird, wenn die Welle (78) zum Zurückkippen des Montagerahmens (28) in die zweite Orientierung gedreht wird, wodurch automatisch eine Trennung der Stützplatte (38) und der Frontplatte (36) zugelassen wird, wenn sie zum Auffangen eines Filmblattes (16) zurückgekippt werden.
4. Die Vorrichtung, wie in Anspruch 1 beansprucht, in der die gegenüberliegenden Ränder (40) der Frontplatte (36) um einen entsprechenden Stab (42) gewickelt sind, von denen jeder in einem Loch gehalten ist, das durch zwei Rillen (44, 46) gebildet wird, die in entsprechenden inneren und äusseren Stäben (48, 50) des Montagerahmens (28) gebildet sind.
5. Eine Vorrichtung für die Röntgenfotografie
wie in Anspruch 3 beansprucht,
die eine Abdeckung (27) aufweist, vor die ein Patient gestellt werden kann, von dessen Brustkorb eine Röntgenaufnahme gemacht werden soll und
bei der die Ausgabeeinrichtung (18) ferner eine Einrichtung zur Ausgabe jeweils eines Filmes (16) durch die Öffnung aufweist, welche Einrichtung zur Trennung der Verstärkerfolien (32, 34) und zu deren Verschwenkung um eine Achse (84) betätigbar ist, die unterhalb der Mitte der Verstärkerfolien (32, 34) liegt, um deren oberen Enden nach hinten in eine Stellung (28a) in Fluchtung mit der Öffnung zu verschieben, so dass ein Film (16) zwischen den Verstärkerfolien (32, 34) aufgenommen wird.
EP78100141A 1977-06-13 1978-06-13 Vorrichtung für die Röntgenfotografie Expired EP0000690B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8080107552T DE2862448D1 (en) 1977-06-13 1978-06-13 Apparatus for receiving a stack of film sheets and dispensing one film sheet at a time

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80581577A 1977-06-13 1977-06-13
US805815 1977-06-13

Related Child Applications (1)

Application Number Title Priority Date Filing Date
EP80107552.4 Division-Into 1978-06-13

Publications (2)

Publication Number Publication Date
EP0000690A1 EP0000690A1 (de) 1979-02-21
EP0000690B1 true EP0000690B1 (de) 1983-10-19

Family

ID=25192576

Family Applications (2)

Application Number Title Priority Date Filing Date
EP80107552A Expired EP0030677B1 (de) 1977-06-13 1978-06-13 Vorrichtung zur Aufnahme eines Stapels von Filmblättern und zur Ausgabe jeweils eines Filmblattes
EP78100141A Expired EP0000690B1 (de) 1977-06-13 1978-06-13 Vorrichtung für die Röntgenfotografie

Family Applications Before (1)

Application Number Title Priority Date Filing Date
EP80107552A Expired EP0030677B1 (de) 1977-06-13 1978-06-13 Vorrichtung zur Aufnahme eines Stapels von Filmblättern und zur Ausgabe jeweils eines Filmblattes

Country Status (7)

Country Link
EP (2) EP0030677B1 (de)
JP (2) JPS5417690A (de)
AU (1) AU518331B2 (de)
BR (1) BR7803755A (de)
CA (1) CA1110100A (de)
DE (1) DE2862339D1 (de)
IT (1) IT1096637B (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3140564A (en) * 1961-02-20 1964-07-14 Mohasco Ind Inc Sound insulating apparatus having movable partition
AT386290B (de) * 1977-09-20 1988-07-25 Licinvest Ag Bildbetrachtungsgeraet
JPS5994340U (ja) * 1982-12-15 1984-06-27 コニカ株式会社 Ｘ線撮影装置
EP0236904B1 (de) * 1986-03-12 1991-06-05 Minnesota Mining And Manufacturing Company Röntgenfilm-Zuführungsmagazin, verwendbar in automatischen Filmhandhabungsvorrichtungen
EP3130562A1 (de) 2015-08-14 2017-02-15 S.A. Lhoist Recherche Et Developpement Verfahren zur herstellung von hochporösem gelöschtem kalk und dadurch erhaltenes produkt

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR617604A (fr) * 1926-06-16 1927-02-23 Dispositif pour la prise de radiographies en série, sous le contrôle de la radioscopie
US1961401A (en) * 1932-10-17 1934-06-05 United Shoe Machinery Corp Mechanism for feeding signatures
US2652248A (en) * 1948-10-09 1953-09-15 Bell & Howell Co Automatic sheet separating and feeding mechanism
US2764409A (en) * 1953-06-18 1956-09-25 Bombard Leon E La Method and apparatus for friction feeding of sheets
US3233101A (en) * 1962-08-06 1966-02-01 Leslie M Forsyth X-ray film and screen exposure holder with separate means for applying contact pressure thereto
US3138322A (en) * 1962-09-18 1964-06-23 Louis J Orlando Perforator
US3265384A (en) * 1964-08-31 1966-08-09 Eastman Kodak Co Film sheet feeder
FR1548226A (de) * 1967-12-28 1968-11-29
US3790160A (en) * 1970-07-07 1974-02-05 Production Inc Daylight film handling system
US3934735A (en) * 1970-07-07 1976-01-27 Productron, Inc. Daylight film handling system
DE2351542C3 (de) * 1973-10-13 1981-01-15 Siemens Ag, 1000 Berlin Und 8000 Muenchen Arbeitsplatz für die Untersuchung von Patienten mittels Röntgenstrahlen

Also Published As

Publication number Publication date
IT7824478A0 (it) 1978-06-12
EP0030677A2 (de) 1981-06-24
JPS5417690A (en) 1979-02-09
EP0030677A3 (en) 1981-10-28
DE2862339D1 (en) 1983-11-24
CA1110100A (en) 1981-10-06
BR7803755A (pt) 1979-04-17
EP0030677B1 (de) 1984-10-17
AU518331B2 (en) 1981-09-24
EP0000690A1 (de) 1979-02-21
AU3705478A (en) 1979-12-20
JPS58126452U (ja) 1983-08-27
IT1096637B (it) 1985-08-26
JPH0417939Y2 (de) 1992-04-22

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