EP0245906A1 - Vorrichtung zur automatischen Entwicklung von Röntgenfilmen - Google Patents

Vorrichtung zur automatischen Entwicklung von Röntgenfilmen Download PDF

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Publication number
EP0245906A1
EP0245906A1 EP87200836A EP87200836A EP0245906A1 EP 0245906 A1 EP0245906 A1 EP 0245906A1 EP 87200836 A EP87200836 A EP 87200836A EP 87200836 A EP87200836 A EP 87200836A EP 0245906 A1 EP0245906 A1 EP 0245906A1
Authority
EP
European Patent Office
Prior art keywords
processing
liquids
processing tank
containers
solutions
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.)
Withdrawn
Application number
EP87200836A
Other languages
English (en)
French (fr)
Inventor
Giorgio Carozzi
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.)
Carozzi SpA
Original Assignee
Carozzi SpA
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 Carozzi SpA filed Critical Carozzi SpA
Publication of EP0245906A1 publication Critical patent/EP0245906A1/de
Withdrawn legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D3/00—Liquid processing apparatus involving immersion; Washing apparatus involving immersion
    • G03D3/02—Details of liquid circulation
    • G03D3/06—Liquid supply; Liquid circulation outside tanks
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
    • G03D13/00—Processing apparatus or accessories therefor, not covered by groups G11B3/00 - G11B11/00
    • G03D13/02—Containers; Holding-devices
    • 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
    • G03C5/29—Development processes or agents therefor

Definitions

  • the invention relates to an apparatus for automatic development of X-ray films.
  • An apparatus of this kind is known from US 4,422,748.
  • X-ray films such as sets of endoral X-ray films and simular, and of panoramic X-ray films especially as used in dental surgery, can be developed.
  • the apparatus as described there comprises an enclosure which contains, separately in adjacent containers, for the developing solution, the fixing solution and if necessary the soluation for final washing.
  • the apparatus is provided with groups of horizontal rollers parallel to each other, positioned above the containers, containing each of the processing solutions in succession.
  • Each group of rollers is made up of pairs of rillers which turn against each other and are positioned at different heights in order to convey the X-ray films from one tank to the next, immersing them and lifting them after each phase of the process.
  • Above the lifting rollers are spatulas to eliminate the residues of the previous bath in order to reduce contamination of the succeeding one; and each group of rillers is operated by a complex system of gearing driven at a programmed constant speed.
  • the automatic development equipment as disclosed is further very space consuming, is structurally extremely complex and delicate and therefore also expensive, and is limited to not too high-­speed processing cycles. It is therefore an aim of the invention to produce an apparatus for automatic processing of X-ray films to be constructed in such a way as to eliminate the disadvantages inherent in the known apparatus.
  • an apparatus of the type mentioned in the opening paragraph is characterized in that means are provided to effect contact between the X-ray film and successive processing liquids by causing the liquids to circulate in succession in a programmed cycle into a processing tank addapted to accept X-ray film sheets.
  • an apparatus use is made of a single processing tank in which the different processing agents can be introduced, hold as long as required and removed for storing for a following cycles. For each processing step an independtly choosen processing time can be excerted now and no liquid mixing due to film transport occurs.
  • the apparatus comprises: - a support on which are placed a processing tank in the form of a flat container; - containers containing successive processing liquids for the X-ray films.
  • a dip tube connected to the processing tank via a multi-channel valve system to be activated by a source of compressed gas in accordance with an operating programme for successive periods of time, controlled by an electronic control switching system; - a system to realise gas into the containers holding the processing solutions in order to sequentially a developing and a fixing solution into the processing tank for predetermined periods of time, fully returning processing liquids into their respective containers at the end of the processing time for each liquid.
  • valve system pneumatically to be activated and storage tanks for each of the processing liquids a very useful and robuust apparatus is generated. Use can be made in the same system of washing water from a main supply thus without a storage thank therefore. In roughly the same manner use can be made of air for drying the film sheets in the processing tank.
  • an electronic control circuitry is provided with means to fix processing periods of time for each processing liquid independently.
  • these periods of time can be adapted to facts which have influence on the process such as the kind of films, the temperature of the processing liquids, the status of the processing liquids and so on.
  • the storage tanks are provided with controlable heating means such that the temperature fo the liquids can be fixed on a predetermined temperature. Also for the washing water and the drying air heat elements can be added to the apparatus.
  • the processing tank is provided with a film lifting system of which a base rod is provided with a profile cooperating with undulations on inner face-walls of the tank such that film sheets are provided to pass beyond that base rod.
  • the apparatus of the drawing shows a support 1 supporting a processing tank 2 having a flattened shape and potentially provided with a movable cover.
  • X-ray films 4 such as panoramic films or sets of filmstrips which are liftable with the aid of a, preferably automatic, film, lifter 3.
  • the film lifter 3 is of a type suitable to be introduced into the processing tank and is preferably provided with a base rod 3a of a shape adapted to an undulated surface of sidewalls of the tank 2 to prevent any film passage beyond the base rod which in fact act as film lifter.
  • the film lifter is preferably activated pneumatically with the help of pressed air.
  • the support 1 also supports containers 5 and 6 containing, respectively, a developing and a fixing solution.
  • the containers 5 and 6 are here in the form of bottles with narrow and threaded necks, but may have any shape.
  • dip tubes 7 and 8 are inserted attacked to the necks of the containers by means of ring-nuts 9 and 10. Ends of the dip tubes 7 and 8 are connected, via two separate, preferably deformable tubes 11 and 12, to a pneumatic valve system 13, here given as a three-way single system with its control placed below three outlets in order to prevent traces of the solutions remaining in the valve after it has been closed.
  • An outlet 14 of the valve system 13 communicates with the inside of the processing tank 2, preferably via its floor.
  • the interiors of the solution containers 5 and 6 are in communication with a tube 15 fixed to a compressed air supply 16 via an intercepting valve 17, via tubes 18 and 19 respectively. Connections at the necks of the containers is made by means of air-tight sleeves 20 and 21, aligned on the same axis as the dip tubes 7 and 8.
  • An outlet valve 22 of the pneumatic valve system 13 is connected to a tube 23 carrying water from the mains supply 24 so that, at the end of, for example the fixing cycle, washing water can be brought into the processing tank 2 via the valve 22 and can be removed via a tube 25 with an outlet valve 26.
  • An outlet valve 27 of the valve system 13 communicates with the container 5 for the developing solution, while an outlet 28 is connected to the fixing solution container 6.
  • containers 5 and 6 can be fitted with a thermostatic control system; for this purpose the containers can be fitted with electrical resistance 30 and 31, for example sunk into the bases of the containers, or provided with air spaces for the circulation of air heated by the resistances.
  • air heated by heating element 32
  • a container 33 is thereto connected with the tube 15 via a valve 34 and a connecting tube 35. After passing through the processing tank the air can be lead away via a discharge pipe 36 at the base of the tank, provided with an interception valve 37.
  • a switching system 40 is connected to the apparatus described above to automate the sequence of operational phases, comprising one or more timers 41 which can be programmed to give both fast and normal processing cycles, and which are connected to an electronic circuit 42 controlling the operation of the different valves regulating the compressed air according to the sequence of opening and closing required by the cycle to be performed, as well as the inlet and discharge valves for the supply of water for washing and air for drying.
  • the said switching system is also fitted with buttons or knobs to allow fine adjustment by hand, to give 10% more or less than the programmed times for example in order to take account of variatins in room temperature and in the reactive properties of the solutions as a result of their repeated use.
  • the switching system is provided with a staring button 43 and may be provided with acoustic and/or lumious signalling means to indicate the successive phases of the cycle, thus eliminating the need for a constant presence of the operator.
  • the whole of the apparatus described may be enclosed in a rigid housing having on at least two of its sides portholes allowing the hands of the operator to be introduced into the container and enabling the films to be placed into the processing tank 2, without exposure to light.
  • the X-ray film to be developed, protected in its wrapping, is introduced into the housing.
  • the operator puts his hands through the portholes and in this position removes the protection from the sensitive layers of the film, and puts the film into the processing tank 2 securing it in position with retaining clips or similar.
  • Compressed air is then released into the container 5, previously filled with developing solution, for a predetermined period of time sufficient to allow the solution to rise to a predetermined level in the processing tank 2 via the valve opening 22, keeping all the other outlets of the valve system 13 and the discharge valve 37 closed.
  • a micro switch 39 on the processing tank may be used to indicate the full covering of the films and may prevent futher action before this level has been reached.
  • Valve 27 is then closed, after the time predetermined for the developing phase has elapsed, valve 27 is opened and the developing solution can then return by gravity into its container 5. compressed air is then relesed into the fixing solution container 6 to bring the level of fixing solution up in the tank and so on, in a procedure analogous to the developing phase, until the fixing solution is returned into its own container when fxing is complete.
  • the valves which functione as outlet valve or also as outlet valve are thus constructed that no residuals of the liquids can remain therein and are of a material resistant to the processing liquids.
  • the film is then washed by releasing mains water into the tank via pipe 23, and after a predetermined period of time this is drained out 6.
  • the solutions may previously have been kept at a thermostatically controlled temperature by mean of heating elements 30 and 31 and the washed films can also be dried with heated air produced by the heating element 32, and can then be removed from the tank.
  • the processing cycle is thus completely automated, without use of moving mechanical parts in the processing tank, without danger of damage to such mechanical parts and without even minimal risk of contamination between the processing solutions, since the said three-­way pneumatic valve system 13 has its control positioned below the outlets, thus eliminating the possibility of traces of the solutions remaining inside the valve.
  • the device forming the subject of the invention has the advantage of making use of supplies such as water and compressed air which are always already available and in normal use in dental surgery, without therefore requiring the installation of new and expensive systems for the operation of equipment.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Photographic Processing Devices Using Wet Methods (AREA)
EP87200836A 1986-05-13 1987-05-07 Vorrichtung zur automatischen Entwicklung von Röntgenfilmen Withdrawn EP0245906A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT20417/86A IT1189511B (it) 1986-05-13 1986-05-13 Apparecchio per lo sviluppo automatico di pellicole radiografiche
IT2041786 1986-05-13

Publications (1)

Publication Number Publication Date
EP0245906A1 true EP0245906A1 (de) 1987-11-19

Family

ID=11166616

Family Applications (1)

Application Number Title Priority Date Filing Date
EP87200836A Withdrawn EP0245906A1 (de) 1986-05-13 1987-05-07 Vorrichtung zur automatischen Entwicklung von Röntgenfilmen

Country Status (6)

Country Link
EP (1) EP0245906A1 (de)
JP (1) JPS6340155A (de)
KR (1) KR870011509A (de)
AU (1) AU7275987A (de)
FI (1) FI872038A7 (de)
IT (1) IT1189511B (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560103A1 (de) * 1992-03-10 1993-09-15 EURODENT S.p.A. Vorrichtung zur automatischen Entwicklung von Röntgenfilmen, insbesondere für den Bereich der Zahnheilkunde
ES2112157A1 (es) * 1995-04-28 1998-03-16 Garrido Briceno Jose Sistema de reciclado de agua para maquinas reveladoras automaticas de rayos x y artes graficas, denominado sd-03.

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3028835U (ja) * 1996-03-08 1996-09-13 株式会社阪神技術研究所 現像処理装置

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508483A (en) * 1967-07-26 1970-04-28 Achille B Weider Apparatus for developing photographic material
US3739705A (en) * 1971-11-01 1973-06-19 Us Electro Optical Inc Photographic plate development system
US4097884A (en) * 1976-09-24 1978-06-27 Adex Corporation Apparatus and method for automatically processing X-ray film

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57172342A (en) * 1981-04-16 1982-10-23 Fujitsu Ltd Automatic developing device
JPS58149049A (ja) * 1982-03-01 1983-09-05 Susumu Nishi 自動現像機

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3508483A (en) * 1967-07-26 1970-04-28 Achille B Weider Apparatus for developing photographic material
US3739705A (en) * 1971-11-01 1973-06-19 Us Electro Optical Inc Photographic plate development system
US4097884A (en) * 1976-09-24 1978-06-27 Adex Corporation Apparatus and method for automatically processing X-ray film

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0560103A1 (de) * 1992-03-10 1993-09-15 EURODENT S.p.A. Vorrichtung zur automatischen Entwicklung von Röntgenfilmen, insbesondere für den Bereich der Zahnheilkunde
US5398093A (en) * 1992-03-10 1995-03-14 Eurodent, S.P.A Apparatus for the automatic development of x-ray films, in particular in dental field
ES2112157A1 (es) * 1995-04-28 1998-03-16 Garrido Briceno Jose Sistema de reciclado de agua para maquinas reveladoras automaticas de rayos x y artes graficas, denominado sd-03.

Also Published As

Publication number Publication date
IT1189511B (it) 1988-02-04
IT8620417A1 (it) 1987-11-13
KR870011509A (ko) 1987-12-23
AU7275987A (en) 1987-11-19
FI872038A0 (fi) 1987-05-08
IT8620417A0 (it) 1986-05-13
FI872038A7 (fi) 1987-11-14
JPS6340155A (ja) 1988-02-20

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Inventor name: CAROZZI, GIORGIO