EP0238132A2 - Filmpackung zur Belichtung und Behandlung eines radiographischen Films - Google Patents

Filmpackung zur Belichtung und Behandlung eines radiographischen Films Download PDF

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Publication number
EP0238132A2
EP0238132A2 EP87200428A EP87200428A EP0238132A2 EP 0238132 A2 EP0238132 A2 EP 0238132A2 EP 87200428 A EP87200428 A EP 87200428A EP 87200428 A EP87200428 A EP 87200428A EP 0238132 A2 EP0238132 A2 EP 0238132A2
Authority
EP
European Patent Office
Prior art keywords
envelope
section
film
bag
film holder
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.)
Granted
Application number
EP87200428A
Other languages
English (en)
French (fr)
Other versions
EP0238132B1 (de
EP0238132A3 (en
Inventor
Livio Dr. Guazzotti
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.)
ELECTROCHEMICAL INTERNATIONAL Ltd
Original Assignee
ELECTROCHEMICAL INTERNATIONAL Ltd
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 ELECTROCHEMICAL INTERNATIONAL Ltd filed Critical ELECTROCHEMICAL INTERNATIONAL Ltd
Publication of EP0238132A2 publication Critical patent/EP0238132A2/de
Publication of EP0238132A3 publication Critical patent/EP0238132A3/fr
Application granted granted Critical
Publication of EP0238132B1 publication Critical patent/EP0238132B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C5/00—Photographic processes or agents therefor; Regeneration of such processing agents
    • G03C5/26—Processes using silver-salt-containing photosensitive materials or agents therefor
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03C—PHOTOSENSITIVE MATERIALS FOR PHOTOGRAPHIC PURPOSES; PHOTOGRAPHIC PROCESSES, e.g. CINE, X-RAY, COLOUR, STEREO-PHOTOGRAPHIC PROCESSES; AUXILIARY PROCESSES IN PHOTOGRAPHY
    • G03C3/00—Packages of films for inserting into cameras, e.g. roll-films, film-packs; Wrapping materials for light-sensitive plates, films or papers, e.g. materials characterised by the use of special dyes, printing inks, adhesives
    • G03C3/003—Individual packages for X-ray film, e.g. for dental applications

Definitions

  • the present invention relates to a light-impermeable case containing an X-ray film and the chemicals for developing and fixing this film, this case being intended to be used for the performance of an X-ray and for the subsequent treatment of the film, without having to resort to a dark room.
  • cases of the type mentioned used especially for indoor radiography, which include an envelope divided into two sections placed in communication, in one of which is an X-ray film.
  • the other section contains a plastic bag containing chemicals in the liquid state for the monobain development-fixing of the film, or it contains two sachets containing, respectively and separately, the chemicals in the liquid state for the development and fixing of the film, as well as means for tearing bags on command.
  • a case of this kind is used as a support for the film when it is introduced into the mouth of a patient to perform the radiography.
  • the means When the exposure is completed, after removing the case from the patient's mouth, the means are activated to tear the respective sachet in order to release the chemicals therein and to let them act on the film to effect the development-fixing, or well to tear the first sachet and carry out the development of the film and then, at the appropriate moment, to also tear the second sachet and carry out the fixing.
  • the object of the present invention is to provide a film holder of the type mentioned, in which sachets of chemicals and the corresponding tearing means are improved so as to completely satisfy the requirements mentioned, and moreover, the tearing means are able to take part by themselves in a useful and active way in industrial operations by which the components are assembled in the envelope and fixed in the latter.
  • a light-impermeable film holder case comprising an envelope having a first section which contains an X-ray film, a second section which contains at least one sachet of chemicals in the state liquid for developing and fixing the film as well as means for the intentional tearing of said bag, and a connection part between said two sections of the envelope, characterized in that each bag comprises a first appendage which extends to from one side of the end of the bag turned towards said connection part, which is folded along the bag and which projects beyond the end of said second section of the envelope, and it also comprises a second appendage extending from the center of said end of the bag by developing over part of the length of said second section of the envelope parallel to said first appendage; and that said tearing means consist of an oblong element of rigid material, folded over on itself, enclosing between its branches said second appendages of all the bags, and extending beyond the length of said second section of the envelope by forming two folded tabs on the outside of the two
  • the rigid element folded back on itself can be applied by an easy operation to the second appendage of the single sachet, or else to the second appendages approached of all the sachets if there are more of them. one, and it then connects between them the sachets, forming with them a coherent assembly which can be easily introduced into the second section of the casing envelope, and finally, by folding its tabs on the walls of the envelope, it determines with security the fixing in place of the sachets of chemicals and the sealing of the case. Thanks to its position, this rigid element cannot in any way give rise to accidental tearing of the bags to which it is adjacent.
  • a traction exerted on the first appendage of a sachet determines the safe and clean tearing of the latter, thanks to the fact that the end of the sachet, next to the root of the first appendage that is pulled, is held in place by the second appendage engaged between the branches of the rigid element folded back on itself.
  • the tearing opens the sachet on the side facing the connection part between the two sections of the envelope, thus ensuring prompt passage without obstacles of the liquid chemicals leaving the sachet, from the second section in which the sachet is located towards the first section containing the radiographic film to be processed.
  • the case comprises an envelope impermeable to light, but permeable to roentgen rays, formed, in a known manner, by a first section 1, a second section 3 and a part 2 for connection between sections 1 and 3.
  • this case is constituted by the junction, by means of a marginal weld, of two sheets of a suitable flexible plastic material, superimposed on each other, which can be formed by a single layer or by several layers, having different characteristics, coupled together. Between said sheets are arranged the interior components, among which there is an X-ray film 4. This is enclosed in the first section 1 of the envelope at the very moment of its formation and it can only be extracted therefrom by tearing of the envelope, which must be done after exposure, development and fixing of the film.
  • Each of the sachets intended for the second section 3 of the case, which in the embodiment shown are two in number, as it has been represented in FIG. 4 comprises in a known manner at least one bladder 5 formed by two sheets of lamellar material welded along the edges, or else by a sheet folded back on itself and welded.
  • the lamellar material forming the sachets must consist of several coupled layers, in order to correspond to the different requirements, which include weldability, protection against the passage of oxygen and mechanical resistance.
  • the lamellar material may include an inner layer of weldable plastic, such as polyethylene, a layer capable of forming an oxygen barrier, which may be of an organic or inorganic type, and an outer layer of protection, such as a varnish or a thin sheet of paper or plastic.
  • an inner layer of weldable plastic such as polyethylene
  • a layer capable of forming an oxygen barrier which may be of an organic or inorganic type
  • an outer layer of protection such as a varnish or a thin sheet of paper or plastic.
  • Each sachet contains a certain quantity of chemicals in the liquid state, and it is characterized by a first oblong appendage 6 which extends from one side of one of the ends of the sachet, by a second oblong appendage 8 which extends from the center of the same end of the bag, and preferably anchored by a substantially triangular connection 7 which forms the root of the first appendix 6 and which ends by defining an acute angle in immediate proximity to the root of the second appendage 8.
  • two similar sachets For each case are provided, in the case shown by way of example, two similar sachets, one of them containing the chemicals for developing the film 4 and the other containing the chemicals for fixing the film.
  • the two sachets can be constructively identical, but they must be made recognizable by marking in one way or another at least the ends of their first appendages; for example, the appendices themselves may be different in color for the two pouches, or they may have different numbers or letters, or, even better, they may have both.
  • the tearing means is obtained from an oblong piece of material rigid 9 (FIG. 5), for example and preferably a metal sheet by folding it over oneself along a longitudinal line 10, or else along two longitudinal lines 10 ⁇ , 10 ⁇ . At one of its ends, the tearing means 9 has two tongues 11.
  • two sachets 5 ⁇ , 5 ⁇ are arranged in mutually symmetrical positions with respect to a center 0 located at the center of the roots of their second appendages 8.
  • the second appendages 8 of the two sachets are superimposed one on the other and engaged between the branches of the tearing means 9 folded over on itself.
  • the tearing means 9 is secured to the sachets 5 by tightening it and, therefore, the sachets come to constitute with the tearing means 9 a single coherent whole.
  • the tongues 11 ⁇ , 11 ⁇ are part of the two opposite branches of the tearing means 9, and the folding of the tongue 11 of each branch is carried out towards the opposite branch of the means tear, so that a particular compactness of the seal is obtained.
  • the latter is arranged with its section 1 (containing the radiographic film 4) in the patient's mouth, while the other section 3 (containing the sachets with the chemicals) remains outside the mouth, and the connection part 2 connects these two sections between them.
  • the presence of the root 7 of the first appendage 6 of the sachet locates the force at a well-defined point in contact with the rigid tearing means 9, which gives rise to a clean and safe tearing, along a line of tear shown schematically at S in FIG. 4.
  • the liquid which leaves the torn part flows through the connection part 2, in the immediate vicinity of which the tear was produced, towards the first section 1 of the envelope, where it acts on the film 4 contained therein, developing it.
  • appendix 6 ⁇ is drawn from the second bag 5 ⁇ which contains the chemicals for fixing, and the events described for the first bag are repeated in an identical manner for the second bag.
  • the fixing liquid thus flows into the first section 1 of the envelope and it will act on the film 4, stopping the development of the latter and carrying out the fixing.
  • the envelope 1-3 can be torn (for example by pulling the walls 3 ⁇ , 3 ⁇ from the end sealed by the tabs 11 ⁇ , 11 ⁇ ) to put bare film 4 and be able to extract it for examination, possibly after prior washing with water.
  • the semi-finished product according to FIG. 5 can be folded back on itself only along the longitudinal center line 10, thus taking a U shape, as can be seen in the figures. 6 and 7a.
  • the semi-finished product according to Figure 5 can also be folded back on itself along two parallel lines 10 ⁇ , 10 ⁇ , thus taking an open C section ( Figure 7b).
  • This second form is the most suitable to be applied in mechanized assembly operations.
  • the application of the invention has the effect, on the one hand, of considerably facilitating the industrial production of the insertion of the interior components into the casing of the case, and of their fixing in the latter, with a favorable influence on the industrial cost price of the article, and on the other hand, to confer on the case the best properties of reliability and safety in its operation.
  • the second section of the case includes two sachets of chemicals
  • the second section of the case includes two sachets of chemicals
  • sachets each having a single bladder containing a liquid chemical have been illustrated, each sachet could also form two or more than two bladders, in order to keep the different components of a product separate. better conservation, said components mixing reciprocally at the time of the tearing of the sachet and its bladders.
  • the treatment of the film in the case according to the invention can therefore be of the monobain type, with products stored in the already mixed state or else stored separately and mixed at the time of use; or it can be of the two-bath type, with the products intended for each bath kept in the already mixed state or kept separately and then mixed at the time of use; or else it is possible to provide for treatment with more than two baths, as may prove useful for satisfying special requirements, always with the possible possibility of a separate storage of a few components.
  • the case according to the invention is particularly suitable for endooral radiography but, of course, it can also be produced, generally in larger dimensions, for any other radiographic use to be carried out under conditions in which a dark room is not available, or it is not used sand in a practical way.
  • the profile given to the envelope 1-3, as it results from FIG. 1 does not condition the application of the invention, and that this profile could, for example , be asymmetrical or proportionate in a different way.
  • the basic shape of the bags 5, indicated as rectangular, could be chosen in another way.
  • the tearing means 9, instead of being made of metal sheet, could be made of rigid plastic. Also other modifications, and any substitution with technical equivalents, can be applied to what has been described and illustrated.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Packages (AREA)
  • Bag Frames (AREA)
EP87200428A 1986-03-18 1987-03-09 Filmpackung zur Belichtung und Behandlung eines radiographischen Films Expired - Lifetime EP0238132B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT6721286 1986-03-18
IT67212/86A IT1189614B (it) 1986-03-18 1986-03-18 Astuccio portapellicola per l esposizione ed il trattamento di una pellicola per radiografia

Publications (3)

Publication Number Publication Date
EP0238132A2 true EP0238132A2 (de) 1987-09-23
EP0238132A3 EP0238132A3 (en) 1989-06-28
EP0238132B1 EP0238132B1 (de) 1992-07-15

Family

ID=11300535

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87200428A Expired - Lifetime EP0238132B1 (de) 1986-03-18 1987-03-09 Filmpackung zur Belichtung und Behandlung eines radiographischen Films

Country Status (5)

Country Link
US (1) US4721209A (de)
EP (1) EP0238132B1 (de)
DE (1) DE3780330T2 (de)
ES (1) ES2033796T3 (de)
IT (1) IT1189614B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523603A1 (de) * 1991-07-17 1993-01-20 Vincenzo Neri Vorrichtung zur Entwicklung und Fixierung einer zahnärztlichen Radiographie

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4912740A (en) * 1988-08-19 1990-03-27 Eastman Kodak Company Intraoral dental radiographic film packet improvement
US4916724A (en) * 1989-07-13 1990-04-10 Trudy Kilber Bitewing X-ray film holders
EP0413855A1 (de) * 1989-08-22 1991-02-27 Agfa-Gevaert N.V. Tageslichtladung-Filmblattpackung
IT223228Z2 (it) * 1991-07-17 1995-06-13 Neri Vincenzo Dispositivo per lo svilupppo ed il fissaggio di una lastra per radio- grafie dentaali
US5199569A (en) * 1991-12-06 1993-04-06 Eastman Kodak Company Package for sheets of X-ray film

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108781A (en) * 1964-05-15 1968-04-03 Louis Lucien Decrop Improvements in or relating to an envelope for daylight developing x-ray films, more particularly dental films
US3379879A (en) * 1966-04-04 1968-04-23 Edward T. Dicker Film unit for dental x-ray photography having a self-contained developer means
US3430042A (en) * 1966-10-10 1969-02-25 Phil X Dental x-ray film pack having an independent developer means therein
CH561437A5 (en) * 1972-02-22 1975-04-30 Bowlby James F G X-ray film developing means - is for dental X-rays and comprises two sheets forming chamber open at each end
US3964604A (en) * 1973-12-21 1976-06-22 Kurt Prenntzell Flexible compartmented package

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3443093A (en) * 1966-07-07 1969-05-06 Eastman Kodak Co Dental x-ray packet having a uniform overall thickness and method of making same

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1108781A (en) * 1964-05-15 1968-04-03 Louis Lucien Decrop Improvements in or relating to an envelope for daylight developing x-ray films, more particularly dental films
US3379879A (en) * 1966-04-04 1968-04-23 Edward T. Dicker Film unit for dental x-ray photography having a self-contained developer means
US3430042A (en) * 1966-10-10 1969-02-25 Phil X Dental x-ray film pack having an independent developer means therein
CH561437A5 (en) * 1972-02-22 1975-04-30 Bowlby James F G X-ray film developing means - is for dental X-rays and comprises two sheets forming chamber open at each end
US3964604A (en) * 1973-12-21 1976-06-22 Kurt Prenntzell Flexible compartmented package

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0523603A1 (de) * 1991-07-17 1993-01-20 Vincenzo Neri Vorrichtung zur Entwicklung und Fixierung einer zahnärztlichen Radiographie

Also Published As

Publication number Publication date
EP0238132B1 (de) 1992-07-15
DE3780330T2 (de) 1993-03-11
IT8667212A0 (it) 1986-03-18
EP0238132A3 (en) 1989-06-28
DE3780330D1 (de) 1992-08-20
ES2033796T3 (es) 1993-04-01
IT1189614B (it) 1988-02-04
US4721209A (en) 1988-01-26

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