US20040245306A1 - Device for guiding a film in an optoelectronic apparatus such as a scanning analyzing device - Google Patents

Device for guiding a film in an optoelectronic apparatus such as a scanning analyzing device Download PDF

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Publication number
US20040245306A1
US20040245306A1 US10/888,147 US88814704A US2004245306A1 US 20040245306 A1 US20040245306 A1 US 20040245306A1 US 88814704 A US88814704 A US 88814704A US 2004245306 A1 US2004245306 A1 US 2004245306A1
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United States
Prior art keywords
film
guiding
belts
rollers
driving
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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.)
Abandoned
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US10/888,147
Inventor
Patrice Lavergne
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Kis SAS
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Kis SAS
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Publication date
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Assigned to KIS reassignment KIS ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: LAVERGNE, PATRICE
Publication of US20040245306A1 publication Critical patent/US20040245306A1/en
Abandoned legal-status Critical Current

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    • 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
    • G03B31/00—Associated working of cameras or projectors with sound-recording or sound-reproducing means
    • G03B31/02—Associated working of cameras or projectors with sound-recording or sound-reproducing means in which sound track is on a moving-picture film
    • 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
    • G03B1/00—Film strip handling
    • G03B1/18—Moving film strip by means which act on the film between the ends thereof
    • G03B1/20—Acting means
    • G03B1/30—Belt feed

Definitions

  • the present invention relates to a device for guiding a film in an apparatus. It applies in particular, but not exclusively, to guiding a film in an optoelectronic apparatus such as a scanning analyzing device.
  • the film has a convex shape in the unrolled state (curved in a plane perpendicular to its longitudinal axis). Now, it proves to be desirable that, in the zone where the imaging is performed, the film should be straight in the said plane.
  • the imaging zone must be formed in a space free of rollers, which increases the dimensions of the apparatus.
  • a device for guiding the film in an optoelectronic apparatus such as a scanning analyzing device, this device comprising means of guiding and driving engaged on the two lateral edges of the film, these guiding and driving means furthermore being designed in such a way as to force the film to follow a curved trajectory in the imaging zone of the apparatus.
  • the guiding and driving means of the film will be able to comprise two coaxial rollers upon which the film bears by its two edges and two parallel drive belts respectively bearing on the said edges of the film on the side opposite the one facing the rollers, along an arc of circle of predetermined angle subtended at the center.
  • the guiding and driving are carried out without risk to the film: it is these belts driven by a motor that cause the film to progress at a constant speed and not the rollers as in conventional devices.
  • FIG. 1 is a side elevation view showing the layout of the constituent components of the device for guiding a film
  • FIG. 2 shows a cross section through AA in FIG. 1,
  • FIG. 3 is a partial perspective view of FIG. 1.
  • the structure of the device comprises two parallel metal plates la, lb separated by three cross-pieces 2 a , 2 b , 2 c disposed along the upper side of the plates. These various components form a rigid constituent assembly of the device for guiding the film 3 .
  • the distance separating the two metal plates 1 a , 1 b is slightly greater than the width of the film 3 to be analyzed.
  • the device comprises means of guiding, driving and winding the film and a device for detecting the presence of the film.
  • the device for guiding the film 3 comprises in an imaging zone two parallel coaxial rollers, one of which is shown 4 a , mounted such that they rotate by means of ball bearings and held by backing plates, of which two are shown, 5 a , 6 a .
  • the lateral edges of the film 3 respectively bear on these two rollers along an arc of circle in such a way that the film follows a circular trajectory.
  • this circular trajectory it exhibits a cylindrical shape with a straight generatrix.
  • This position makes it possible to obtain in the imaging zone a straight transverse zone perpendicular to which is disposed a slot formed in a panel 7 integral with the two plates 1 a , 1 b and forming a rectangular space for conveying light rays passing through the film.
  • the device for driving the film 3 comprises two parallel belts 8 a which move in synchronism and which respectively bear on the lateral edges of the film 3 at the level of the circular trajectory. In this way, a friction drive on the two lateral edges of the film is obtained, which eliminates any possibility of variation of speed between these two edges.
  • the two belts, only one of which is shown, 8 a have notches in the side facing away from the film 3 , the driving of the belts being carried out by means of two coaxial notched pulleys 9 a and 9 b whose common shaft 10 is driven by an electric motor 11 and two free notched pulleys, only one of which is shown, 12 a .
  • the tension and positioning of these two belts 8 a , 8 b are provided by rollers, only one set of which is shown, 13 a , 13 b , 13 c.
  • the device for winding the film 3 consists of a diabolo-shaped roller 15 mounted such that it rotates about a spindle 16 parallel with the axes of the rollers with spring return.
  • This spindle is guided in such a way as to be able to move along an oblong opening 17 in such a way as to move according to the thickness of the winding of the film 3 on the roller 15 .
  • the major axis of the oblong opening 17 is oriented perpendicularly with respect to the tangential plane of application of the belts on the edges of the film (application force collinear with the major axis of the oblong hole 17 ).
  • Two pairs of arms guide the film during its introduction onto or extraction from the diabolo-shaped roller 15 .
  • the arms are hinged. It should be noted that the angular velocity of the diabolo, the latter not having any driving means of its own, depends on the amount of winding of the film 3 .
  • the zone of introduction of the film comprises a device for detecting the presence of the film 3 comprising a light generator 20 /light receiver 21 pair.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Length Measuring Devices By Optical Means (AREA)
  • Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
  • Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
  • Facsimiles In General (AREA)

Abstract

A device for guiding a film in an apparatus comprises guiding and driving means engaged on the two lateral edges of the film. The guiding and driving means is further designed to force the film to follow a curved trajectory in the imaging zone of the apparatus. The means guiding and driving the film include two coaxial rollers whereon the film is urged to span through its two edges, and two parallel driving belts urged respectively to be supported on said edges on the side opposite the rollers, along an arc with predetermined sustaining angle. The invention is useful for guiding film in an optoelectronic apparatus such as a scanning analysis device.

Description

  • The present invention relates to a device for guiding a film in an apparatus. It applies in particular, but not exclusively, to guiding a film in an optoelectronic apparatus such as a scanning analyzing device. [0001]
  • In general, it is known that guiding a film in a viewer raises many problems for the following reasons: [0002]
  • The film has a convex shape in the unrolled state (curved in a plane perpendicular to its longitudinal axis). Now, it proves to be desirable that, in the zone where the imaging is performed, the film should be straight in the said plane. [0003]
  • The driving of the film must be consistent over the whole of its width. If this is not the case, the speed of progress will vary from one edge of the film to the other and the film will be driven towards one of its lateral edges, possibly becoming distorted (with risk of jamming). [0004]
  • The driving at the level of the receiving spools raises problems that are difficult to solve: the speed of progress of the strip is not constant and varies according to the amount of winding on the receiving spool. [0005]
  • The wear of cylindrical rollers for driving and guiding the film gives rise to a risk of scratching the film by the roller. [0006]
  • The imaging zone must be formed in a space free of rollers, which increases the dimensions of the apparatus. [0007]
  • The purpose of the invention is therefore more particularly to eliminate these disadvantages and to solve these problems: [0008]
  • by presenting a straight portion of film in the imaging zone, [0009]
  • by driving the film in a consistent manner over the whole of its width with an independent speed of progress, [0010]
  • by eliminating all risks of damaging the analyzed film. [0011]
  • For this purpose it proposes a device for guiding the film in an optoelectronic apparatus such as a scanning analyzing device, this device comprising means of guiding and driving engaged on the two lateral edges of the film, these guiding and driving means furthermore being designed in such a way as to force the film to follow a curved trajectory in the imaging zone of the apparatus. By means of these arrangements, the mechanical properties of the film are exploited in order to obtain a straight transverse zone of film in the imaging zone. [0012]
  • Advantageously, the guiding and driving means of the film will be able to comprise two coaxial rollers upon which the film bears by its two edges and two parallel drive belts respectively bearing on the said edges of the film on the side opposite the one facing the rollers, along an arc of circle of predetermined angle subtended at the center. [0013]
  • In this way, the guiding and driving are carried out without risk to the film: it is these belts driven by a motor that cause the film to progress at a constant speed and not the rollers as in conventional devices.[0014]
  • One embodiment of the invention is described below, by way of non-limiting example, with reference to the appended drawings in which: [0015]
  • FIG. 1 is a side elevation view showing the layout of the constituent components of the device for guiding a film, [0016]
  • FIG. 2 shows a cross section through AA in FIG. 1, [0017]
  • FIG. 3 is a partial perspective view of FIG. 1. [0018]
  • In this example, the structure of the device comprises two parallel metal plates la, lb separated by three [0019] cross-pieces 2 a, 2 b, 2 c disposed along the upper side of the plates. These various components form a rigid constituent assembly of the device for guiding the film 3. The distance separating the two metal plates 1 a, 1 b is slightly greater than the width of the film 3 to be analyzed.
  • According to the invention, the device comprises means of guiding, driving and winding the film and a device for detecting the presence of the film. [0020]
  • The device for guiding the film [0021] 3 comprises in an imaging zone two parallel coaxial rollers, one of which is shown 4 a, mounted such that they rotate by means of ball bearings and held by backing plates, of which two are shown, 5 a, 6 a. The lateral edges of the film 3 respectively bear on these two rollers along an arc of circle in such a way that the film follows a circular trajectory. Thus, along this circular trajectory, it exhibits a cylindrical shape with a straight generatrix. This position makes it possible to obtain in the imaging zone a straight transverse zone perpendicular to which is disposed a slot formed in a panel 7 integral with the two plates 1 a, 1 b and forming a rectangular space for conveying light rays passing through the film..
  • The device for driving the film [0022] 3 comprises two parallel belts 8 a which move in synchronism and which respectively bear on the lateral edges of the film 3 at the level of the circular trajectory. In this way, a friction drive on the two lateral edges of the film is obtained, which eliminates any possibility of variation of speed between these two edges. The two belts, only one of which is shown, 8 a, have notches in the side facing away from the film 3, the driving of the belts being carried out by means of two coaxial notched pulleys 9 a and 9 b whose common shaft 10 is driven by an electric motor 11 and two free notched pulleys, only one of which is shown, 12 a. The tension and positioning of these two belts 8 a, 8 b are provided by rollers, only one set of which is shown, 13 a, 13 b, 13 c.
  • The device for winding the film [0023] 3 consists of a diabolo-shaped roller 15 mounted such that it rotates about a spindle 16 parallel with the axes of the rollers with spring return. This spindle is guided in such a way as to be able to move along an oblong opening 17 in such a way as to move according to the thickness of the winding of the film 3 on the roller 15. The major axis of the oblong opening 17 is oriented perpendicularly with respect to the tangential plane of application of the belts on the edges of the film (application force collinear with the major axis of the oblong hole 17). Two pairs of arms, only one of which is shown, 18 a, 19 a, guide the film during its introduction onto or extraction from the diabolo-shaped roller 15. The arms are hinged. It should be noted that the angular velocity of the diabolo, the latter not having any driving means of its own, depends on the amount of winding of the film 3.
  • The zone of introduction of the film comprises a device for detecting the presence of the film [0024] 3 comprising a light generator 20/light receiver 21 pair.

Claims (12)

1. A device for guiding a film, comprising means of guiding and driving engaged on two lateral edges of the film, these guiding and driving means furthermore being designed in such a way as to force the film to follow a curved trajectory in an imaging zone of an optoelectronic apparatus, and said guiding and driving means comprise two coaxial and mutually independent rollers, upon which the film bears by its two lateral edges, and two parallel drive belts respectively bearing on the said edges on a side opposite one facing the rollers, along an arc of circle of predetermined angle subtended at a center.
2. The device as claimed in claim 1, further comprising two parallel plates.
3. The device as claimed in claim 2, wherein said plates are separated by cross-pieces.
4. The device as claimed in claim 1, wherein said coaxial rollers are parallel and mounted such that they rotate.
5. The device as claimed in claim 1, wherein light rays are conveyed to said imaging zone through a slot formed in a panel integral with said plates.
6. The device a claimed in claim 1, wherein said belts have means for causing the belts to move in a synchronous manner.
7. The device as claimed in claim 6, wherein said belts have notches on a side opposite to the one facing the film.
8. The device as claimed in claim 7, wherein said belts are driven by two coaxial notched pulleys driven by a motor.
9. The device as claimed in claim 7, wherein tension and positioning of the said belts are provided by rollers.
10. The device as claimed in claim 1, further including winding means comprising a diabolo-shaped roller mounted such that the diabolo-shaped roller rotates.
11. The device as claimed in claim 10, wherein said diabolo-shaped roller comprises means of movement which depend on a thickness of a winding of the film.
12. The device as claimed in claim 1, further comprising a device for detecting presence of the film.
US10/888,147 2002-02-05 2004-07-09 Device for guiding a film in an optoelectronic apparatus such as a scanning analyzing device Abandoned US20040245306A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FR0201446A FR2835622B1 (en) 2002-02-05 2002-02-05 DEVICE FOR GUIDING A FILM IN AN OPTOELECTRONIC APPARATUS SUCH AS A SCANNING ANALYSIS DEVICE
FR02/01446 2002-02-05
PCT/FR2003/000363 WO2003067322A1 (en) 2002-02-05 2003-02-05 Device for guiding a film in an optoelectronic apparatus such as a scanning analyzing device

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/FR2003/000363 Continuation WO2003067322A1 (en) 2002-02-05 2003-02-05 Device for guiding a film in an optoelectronic apparatus such as a scanning analyzing device

Publications (1)

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US20040245306A1 true US20040245306A1 (en) 2004-12-09

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US10/888,147 Abandoned US20040245306A1 (en) 2002-02-05 2004-07-09 Device for guiding a film in an optoelectronic apparatus such as a scanning analyzing device

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US (1) US20040245306A1 (en)
EP (1) EP1472568A1 (en)
JP (1) JP2005516876A (en)
AU (1) AU2003214348A1 (en)
FR (1) FR2835622B1 (en)
WO (1) WO2003067322A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004033590A1 (en) 2004-07-06 2006-02-16 Arnold & Richter Cine Technik Gmbh & Co Betriebs Kg Method and device for transporting a motion picture film

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882413A (en) * 1930-07-12 1932-10-11 Paramount Publix Corp Film spool
US5121150A (en) * 1990-02-12 1992-06-09 Eastman Kodak Company Driving and timing belt for a photographic film processor
US5146341A (en) * 1990-07-27 1992-09-08 Eastman Kodak Company Film scanner having a dynamic film gate and an integrating cylinder incorporated therein
US5152474A (en) * 1991-02-19 1992-10-06 Ray Hicks Self-centering guide spindle
US5342133A (en) * 1992-12-23 1994-08-30 Hewlett-Packard Company Paper moving system for a printer/plotter
US5349420A (en) * 1992-03-27 1994-09-20 Minnesota Mining And Manufacturing Company Imager apparatus support system
US5608474A (en) * 1995-02-14 1997-03-04 Sony Corporation Image displaying device

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB344785A (en) * 1929-12-04 1931-03-04 Frank Schiffl Improvements in or relating to sound gates for talking film apparatus
DE3144333A1 (en) * 1981-11-07 1983-05-19 Johannes 4172 Straelen Lörsch Device for transporting film material

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1882413A (en) * 1930-07-12 1932-10-11 Paramount Publix Corp Film spool
US5121150A (en) * 1990-02-12 1992-06-09 Eastman Kodak Company Driving and timing belt for a photographic film processor
US5146341A (en) * 1990-07-27 1992-09-08 Eastman Kodak Company Film scanner having a dynamic film gate and an integrating cylinder incorporated therein
US5152474A (en) * 1991-02-19 1992-10-06 Ray Hicks Self-centering guide spindle
US5349420A (en) * 1992-03-27 1994-09-20 Minnesota Mining And Manufacturing Company Imager apparatus support system
US5342133A (en) * 1992-12-23 1994-08-30 Hewlett-Packard Company Paper moving system for a printer/plotter
US5608474A (en) * 1995-02-14 1997-03-04 Sony Corporation Image displaying device

Also Published As

Publication number Publication date
FR2835622A1 (en) 2003-08-08
FR2835622B1 (en) 2004-05-28
WO2003067322A1 (en) 2003-08-14
AU2003214348A1 (en) 2003-09-02
EP1472568A1 (en) 2004-11-03
JP2005516876A (en) 2005-06-09

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AS Assignment

Owner name: KIS, FRANCE

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:LAVERGNE, PATRICE;REEL/FRAME:015566/0676

Effective date: 20040621

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION