EP1317690A1 - Machine et procede de restauration de films cinematographiques - Google Patents
Machine et procede de restauration de films cinematographiquesInfo
- Publication number
- EP1317690A1 EP1317690A1 EP01969850A EP01969850A EP1317690A1 EP 1317690 A1 EP1317690 A1 EP 1317690A1 EP 01969850 A EP01969850 A EP 01969850A EP 01969850 A EP01969850 A EP 01969850A EP 1317690 A1 EP1317690 A1 EP 1317690A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- film
- adhesive tape
- pieces
- machine according
- new
- 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
Links
- 238000000034 method Methods 0.000 title claims abstract description 9
- 239000002390 adhesive tape Substances 0.000 claims abstract description 52
- 238000004140 cleaning Methods 0.000 claims abstract description 21
- 239000002904 solvent Substances 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 8
- CURLTUGMZLYLDI-UHFFFAOYSA-N Carbon dioxide Chemical compound O=C=O CURLTUGMZLYLDI-UHFFFAOYSA-N 0.000 claims description 7
- 230000008030 elimination Effects 0.000 claims description 7
- 238000003379 elimination reaction Methods 0.000 claims description 7
- 239000011859 microparticle Substances 0.000 claims description 6
- 238000005507 spraying Methods 0.000 claims description 5
- NEHMKBQYUWJMIP-UHFFFAOYSA-N chloromethane Chemical compound ClC NEHMKBQYUWJMIP-UHFFFAOYSA-N 0.000 claims description 4
- 229920002472 Starch Polymers 0.000 claims description 3
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical group ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims description 3
- 229910002092 carbon dioxide Inorganic materials 0.000 claims description 3
- 239000001569 carbon dioxide Substances 0.000 claims description 3
- 230000003628 erosive effect Effects 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000004033 plastic Substances 0.000 claims description 3
- 239000008107 starch Substances 0.000 claims description 3
- 235000019698 starch Nutrition 0.000 claims description 3
- 238000012546 transfer Methods 0.000 claims description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 3
- 230000001680 brushing effect Effects 0.000 claims description 2
- 238000005530 etching Methods 0.000 claims description 2
- 229940050176 methyl chloride Drugs 0.000 claims description 2
- 230000003287 optical effect Effects 0.000 claims description 2
- 238000007654 immersion Methods 0.000 claims 1
- 230000003100 immobilizing effect Effects 0.000 claims 1
- 238000011179 visual inspection Methods 0.000 claims 1
- 239000000853 adhesive Substances 0.000 description 5
- 230000001070 adhesive effect Effects 0.000 description 5
- 238000012545 processing Methods 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 5
- 238000006073 displacement reaction Methods 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 238000004026 adhesive bonding Methods 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 231100000331 toxic Toxicity 0.000 description 2
- 230000002588 toxic effect Effects 0.000 description 2
- 238000013519 translation Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 235000011089 carbon dioxide Nutrition 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910001234 light alloy Inorganic materials 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000008439 repair process Effects 0.000 description 1
- 230000003252 repetitive effect Effects 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
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
- G03D15/00—Apparatus for treating processed material
- G03D15/04—Cutting; Splicing
- G03D15/043—Cutting or splicing of filmstrips
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03D—APPARATUS FOR PROCESSING EXPOSED PHOTOGRAPHIC MATERIALS; ACCESSORIES THEREFOR
- G03D15/00—Apparatus for treating processed material
- G03D15/04—Cutting; Splicing
- G03D15/043—Cutting or splicing of filmstrips
- G03D15/046—Automatic cutting
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/19—Sheets or webs edge spliced or joined
- Y10T428/192—Sheets or webs coplanar
- Y10T428/197—Sheets or webs coplanar with noncoplanar reinforcement
Definitions
- the invention relates to a machine and a method for restoring cinematographic films, in particular for replacing the film end fittings which have been produced by means of adhesive tape.
- It relates to a machine for restoring cinematographic films comprising connections made by means of adhesive tape, which makes it possible automatically to eliminate the old connections and to replace them by new connections.
- the machine according to the invention operates fully automatically and does not require the permanent intervention of an operator. A single operator can therefore monitor several machines and intervene on one or the other of these machines whenever necessary. The work of restoring a large number of films is greatly simplified and facilitated.
- this machine comprises a first module formed by a chassis carrying means for guiding a movable carriage equipped with at least means for running films and for detecting fittings and means for controlled displacement of the carriage, and a second independent and removable module, comprising the means for eliminating the fittings and for cleaning the film.
- This arrangement which separates the mechanical means for moving and processing the film from the chemical or other means used for removing the pieces of adhesive tape and for cleaning the film, makes it possible, if necessary, to use different means of eliminating the fittings. and film cleaning for different types of films and fittings and therefore easily adapt the machine to different restoration modes.
- the means for eliminating the fittings comprise means for mechanically attacking the pieces of adhesive tape by spraying erosive microparticles, such as for example particles of glass, starch, plastic, or water or carbon dioxide snow.
- the means for removing the connectors comprise means for etching the pieces of adhesive tape with a solvent, such as example that trichlorethylene or methyl chloride.
- the parts of the film previously covered by the pieces of adhesive tape are cleaned using a solvent of the same type, by spraying the solvent onto the film or by immersing the film in a solvent bath.
- a solvent of the same type by spraying the solvent onto the film or by immersing the film in a solvent bath.
- the action of the solvent on the film can be enhanced by an ultrasonic generator. Cleaning can also be supplemented by gentle, non-aggressive brushing.
- Drying of the cleaned parts of the film is then carried out, for example by blowing hot air, then the cleaned parts of the film are stitched up and a new connection is laid using a gluing machine of an appropriate type, which places pieces of adhesive tape on the cut ends of the film and forms the necessary perforations in the fitting.
- Means for automatically controlling the lateral perforations of the film may advantageously be provided on the machine, for the detection of parts of the film whose perforations are damaged, destroyed or malformed and allow the possible intervention of an operator.
- the invention also provides a method for restoring cinematographic films comprising connections made by means of adhesive tape, this process being characterized in that it consists in: - detecting a connection by optical, mechanical or electrical means when the film is running ,
- the invention now makes possible the complete restoration of cinematographic films comprising fittings produced by means of adhesive tape, which are archived in large numbers in most countries of the world.
- FIG. 1 is a schematic elevation view of a machine according to the invention
- - Figure 2 is a top view of the machine of Figure 1;
- FIG. 3 is a view corresponding to Figure 1 and showing the machine during a phase of elimination of a connection or cleaning or drying of the film parts previously covered by the connection;
- FIG. 4 is a view corresponding to Figures 1 and 3, but showing a part of the machine tilted for operator intervention
- FIGS. 5 and 6 schematically represent two embodiments of the connection detection means used in the machine according to the invention
- - Figures 7 and 8 are top views and in elevation respectively of the film taking means
- FIG. 11 is a flow diagram of the main operations of the method according to the invention.
- the machine according to the invention which is shown diagrammatically in FIGS. 1 to 4, is more particularly intended for the restoration of cinematographic films in 16mm, which include connections produced by means of an adhesive tape such as, for example, that sold under the name J-LAR PERMACEL. These connections are made by applying an adhesive tape to each side of the film, on either side of the connection line for the lengths of film which are placed end to end, the width of these adhesive tapes making it possible to cover exactly two film frames.
- a cinematographic film of this type which may comprise a single lateral row of perforation or two lateral rows of perforation, the replacement of the old fittings with new fittings must not degrade the film, nor affect the quality of the image or sound.
- the duration of the shots must be kept, to maintain the synchronization between image and sound. Consequently, any elimination of an image from a piece of film due to the degradation of the film at this location must be accompanied by a replacement of this image with a black image.
- the machine according to the invention essentially comprises a first module designated by the reference 10, formed by a chassis 12 and a carriage mobile 14 comprising a certain number of mechanical or electromechanical means which will be described in more detail below, and a second module 16 which is independent of the first module 10 and which is movable relative thereto, this second module 16 comprising a number of film processing means, which can be modified or adapted to the nature of the films to be treated and to those of the fittings to be replaced. Means not shown are provided to ensure precise positioning of the second module relative to the first and to immobilize it in position.
- the carriage 14 is mounted movable in translation on the chassis 10 by means of slides 18 and is displaceable by motorized means, comprising for example a direct current geared motor and a belt transmission without play.
- the carriage 14 carries a plate 20 for example of light alloy, arranged in a vertical plane and on which are mounted two motorized hubs for receiving a film-carrying reel 22 and a film-receiving reel 24 as well as a certain number of film guide rollers 26 unwound from the reel 22, these rollers defining a horizontal U-shaped loop leading to the take-up reel 24 and passing through connection detection means 28, film taking means 30, means 34 lateral cutting of the new fittings, and means 36 for visual control.
- the plate 20 is articulated on the carriage 14 about a horizontal axis and can be tilted manually outwards as shown in FIG. 4, for operator intervention, this tilting being facilitated by gas springs 38.
- the plate 20 is locked in its position service on the carriage 14 by suitable means, for example snap-fastening means 40.
- FIG. 5 An embodiment of the coupling detection means 28 is shown diagrammatically in FIG. 5.
- the presence of a connector formed by two pieces of adhesive tape 42 on the film 26 results in a local excess thickness of 8 to 10 ⁇ m approximately on the film whose thickness is approximately 15 ⁇ m.
- the film 26 is driven between two rollers 44 which are free to rotate, one of which is mounted on a fixed axis and the other on an oscillating axis 46 articulated by means of a spring leaf 48 on an element 50 integral with the plate 20.
- the passage of the connector 42 between the rollers 44 results in a displacement of the roller carried by the oscillating axis 46 towards a capacitive sensor 52 whose resolution is preferably less than 1 ⁇ m.
- the film 26 passes over a roller 44 which is free in rotation and mounted on a fixed axis in position, detection means 54 with laser scanning being provided for detecting the radial position of a generator of the roller 44 over which the film 26 passes.
- detection means 54 with laser scanning being provided for detecting the radial position of a generator of the roller 44 over which the film 26 passes.
- the passage of the connector 42 on this generator causes an increase in the radial length detected by the laser scanning.
- these means 30 comprise pneumatically controlled clamps each consisting of two planar jaws 56 arranged on either side of the film 26, one of these jaws having teeth 58 on its face facing the film 26, intended to engage in the perforations 60 of the film.
- the other jaw 56 comprises, on its face facing the film 26, cavities 60 intended to receive the ends of the aforementioned teeth 58 when the clamp is clamped on the film 26.
- the two jaws 56 are extended, on the side of the other clamp forming part of the means 30, by a pointed tip 62 extending parallel to the film 26 and along the latter in the direction of the connector 42.
- the jaws 56 of the film-taking means 30 are pivotally mounted on the plate 20 around horizontal axes so that they can be turned 90 ° downwards, as shown diagrammatically in FIG. 3, when the connector 42 located between the aforementioned clamps has been cut in half.
- the cutting means 64 are mounted on the chassis 12 in a transverse alignment with the gripping means 30 relative to the plate 20 so that the translation of the carriage 14 on the slides 18 can bring the piece of film held between the clamps 30 at the cutting means 64 to allow the latter to make a clean cut of the film and of the fitting in the middle of the fitting, that is to say just between the two images of the film joined by the pieces of tape adhesive 42.
- the cutting means 64 are known means, of the cutter type for example.
- the cutting means 64 are located on a branch of a U-shaped part of the chassis 12, on the other branch of which there are means 66 for laying a new connector on the film, these means 66 comprising in particular a gluing machine of a known type.
- the means 68 for removing the pieces of adhesive tape 42 comprise spray nozzles for a solvent such as trichlorethylene, making it possible to dissolve the adhesive used in the old connector and therefore take off the pieces 42 of adhesive tape and entrain them in a tank provided in the second module 16.
- the clamps 30 are oriented vertically to allow the two parts of the film to hang down resulting from the cutting of the fitting and carrying the pieces of adhesive tape 42.
- the spray nozzles are oriented substantially vertically downwards so that the sprayed solvent can be collected with the pieces of adhesive tape in the retention tank of the second module 16.
- the parts of film extending downwards from the clamps 30 are brought to the cleaning means 70 provided in the second module 16 and which comprise for example a bath of the abovementioned solvent, in which the parts of film are submerged.
- the solvent cleaning action can be enhanced by associating an ultrasonic generator with this solvent bath.
- the cleaned film parts can be moved between soft brushes allowing the adhesive, if any, remaining on the film parts to be removed by light friction, without damaging the latter.
- the clamps 30 rotate 90 ° to return to their horizontal position where they are oriented towards each other, the cut parts of the film, cleaned and dried, then being substantially aligned horizontally and placed end to end, this which allows the formation of a new fitting by laying a piece of adhesive tape on each side of the film in the aforementioned means 66.
- perforations are formed in the pieces of new adhesive tape, in correspondence with the lateral perforations of the film 26.
- the cutting means 64, the means 68 for elimination pieces of adhesive tape, 70 for cleaning, 72 for drying and 66 for fitting a new fitting are independent of the plate 20 and transversely aligned with respect thereto, the means for translational movement of the carriage 14 playing the role means for transferring the end of the film held by the clamps 30 between the aforementioned means 64, 68, 70, 72 and 66.
- the film continues to run by driving the reels 22 and 24 in rotation until another connection is detected by the means 28.
- the means 34 provided on the plate 20 and an exemplary embodiment of which is shown in the figures 9 and 10, make it possible to eliminate the laterally projecting parts of the new fitting formed on the film.
- These means 34 comprise two rollers 74 for guiding the film 26 and two rotary cutting blades 76 placed along the edges of the film to eliminate the parts of the adhesive tapes 78 of the new connector which project laterally from the film 26.
- the film then scrolls to the visual control means 36 where the running is stopped when the new connection is in the field of vision of these control means.
- the operator can be warned by any signal that he must visually inspect the new fitting.
- a local command for example by push button, allows it to restart the film running.
- the running of the film is stopped for the replacement of the new detected connection, and is resumed until the previously replaced connection reaches the visual control means 36.
- means for automatic control of the lateral perforations of the film can be provided on the plate 20 to signal the operator any anomaly noted in these perforations and allow him to carry out a repair if necessary.
- the tanks which contain this solvent in the second module 16 have free surfaces and openings for communication with the outside atmosphere which are also reduced. than possible. As soon as a tank is no longer used, it is systematically closed by means of a sealed shutter.
- point suction means supported by the plate 20, allow the extraction of solvent vapors released by the open tanks in which the removal of the pieces of adhesive tape and the cleaning of the film.
- the pieces of adhesive tape are removed by mechanical attack means by spraying erosive microparticles onto these pieces of tape.
- microparticles can be particles of glass, starch, plastic, or even water or carbon dioxide snow.
- the advantage of dry ice is its immediate evaporation after spraying on the pieces of tape to be eliminated.
- a central control-command unit comprising means for processing information
- a microcomputer or a specific microprocessor card is integrated into the chassis 12 of the first module for the control and command of the various film processing means of the machine.
- FIG. 11 which comprises:
- an operation 90 for removing the pieces of adhesive tape which, as already described, can be carried out mechanically or chemically,
- An operation 100 of visual control An operation 100 of visual control.
- an additional automatic perforation control operation can be performed between the above operations 98 and 100.
- the machines according to the invention can restore films automatically at a rate which is at least equal to that of an operator performing this restoration by hand.
- the use of the machines according to the invention makes it possible to divide by four the time necessary for restoring a large number of films and dividing by a coefficient at least equal to two the corresponding costs.
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Cleaning In General (AREA)
- Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
- Replacement Of Web Rolls (AREA)
- Projection-Type Copiers In General (AREA)
- Apparatus For Radiation Diagnosis (AREA)
- Supplying Of Containers To The Packaging Station (AREA)
- Manufacture Of Macromolecular Shaped Articles (AREA)
- Photographic Processing Devices Using Wet Methods (AREA)
Description
Claims
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR0011752A FR2813962B1 (fr) | 2000-09-13 | 2000-09-13 | Machine et procede de restauration de films cinematographiques |
FR0011752 | 2000-09-13 | ||
PCT/FR2001/002735 WO2002023271A1 (fr) | 2000-09-13 | 2001-09-07 | Machine et procede de restauration de films cinematographiques |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1317690A1 true EP1317690A1 (fr) | 2003-06-11 |
EP1317690B1 EP1317690B1 (fr) | 2006-03-08 |
Family
ID=8854319
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP01969850A Expired - Lifetime EP1317690B1 (fr) | 2000-09-13 | 2001-09-07 | Machine et procede de restauration de films cinematographiques |
Country Status (7)
Country | Link |
---|---|
US (1) | US20040013842A1 (fr) |
EP (1) | EP1317690B1 (fr) |
AT (1) | ATE320029T1 (fr) |
AU (1) | AU2001289985A1 (fr) |
DE (1) | DE60117820D1 (fr) |
FR (1) | FR2813962B1 (fr) |
WO (1) | WO2002023271A1 (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US8681213B1 (en) | 2013-09-05 | 2014-03-25 | Lasergraphics Inc. | Motion picture film scanner with automated failed splice recovery |
Family Cites Families (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2550259B1 (de) * | 1975-11-08 | 1976-07-22 | Hanke & Thomas Hama Hamaphot | Streifenfoermige klebefolie zum verbinden von filmen |
US4202720A (en) * | 1977-06-21 | 1980-05-13 | Glen L. McCarty | Web cutting and splicing apparatus |
JPS5852218B2 (ja) * | 1980-02-01 | 1983-11-21 | 株式会社 東京光音 | 現像、乾燥済み長尺ネガフイルムの自動仕分け巻取り装置 |
US4323201A (en) * | 1980-07-14 | 1982-04-06 | Joe Gonzalez | Automatic film de-splicer and winder |
US5373339A (en) * | 1993-12-22 | 1994-12-13 | Eastman Kodak Company | Apparatus and method for separating spliced strips of photographic film |
US5473402A (en) * | 1993-12-22 | 1995-12-05 | Eastman Kodak Company | Film processing system |
US5807459A (en) * | 1997-03-17 | 1998-09-15 | Eastman Kodak Company | Apparatus and method for separating spliced strips of photographic film |
-
2000
- 2000-09-13 FR FR0011752A patent/FR2813962B1/fr not_active Expired - Fee Related
-
2001
- 2001-09-07 DE DE60117820T patent/DE60117820D1/de not_active Expired - Lifetime
- 2001-09-07 US US10/380,015 patent/US20040013842A1/en not_active Abandoned
- 2001-09-07 AT AT01969850T patent/ATE320029T1/de not_active IP Right Cessation
- 2001-09-07 AU AU2001289985A patent/AU2001289985A1/en not_active Abandoned
- 2001-09-07 EP EP01969850A patent/EP1317690B1/fr not_active Expired - Lifetime
- 2001-09-07 WO PCT/FR2001/002735 patent/WO2002023271A1/fr active IP Right Grant
Non-Patent Citations (1)
Title |
---|
See references of WO0223271A1 * |
Also Published As
Publication number | Publication date |
---|---|
FR2813962A1 (fr) | 2002-03-15 |
DE60117820D1 (de) | 2006-05-04 |
WO2002023271A1 (fr) | 2002-03-21 |
US20040013842A1 (en) | 2004-01-22 |
FR2813962B1 (fr) | 2002-11-08 |
EP1317690B1 (fr) | 2006-03-08 |
ATE320029T1 (de) | 2006-03-15 |
AU2001289985A1 (en) | 2002-03-26 |
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