JPS61284744A - Roll film carrying device - Google Patents

Abstract

PURPOSE:To perform film breadthwise positioning accurately by positioning a variable carrying stop part at two positions before and behind the projection of a film carrying path and using it in common to carry plural films having different tip parts. CONSTITUTION:Although films F1 and F2 are both 16mm films, a leader tape T provided to the film F1 is 20.5mm width and the width of the tip part is winder. The carrying path 14 used in common for both films F1 and F2 is provided with reduced guides 86 and 87 as a carrying reduction part 14a which maintains elastically the minimum carrying path width adapted to minimum film width and is expansible. The guides 86 and 87 are added to a side plate 14C as elastic tongue pieces extending in the direction of film take-up advance and their tips are formed into inward projection arcuate guide parts 86a and 87a which cause no catch and variation in film width in both take-up and rewind carrying directions of the film, thereby maintaining the minimum carrying path width at any time.

Description

[Detailed Description of the Invention] The present invention relates to a roll film transport device, specifically, a roll film that automatically feeds out a roll film wound on a supply reel and automatically winds it on a take-up reel. Regarding roll film transport devices, for example, it is used as a roll film carrier in a reader or reader/printer to search for a predetermined frame of a roll microfilm and read it on a screen, or to selectively read and copy. be done.

Conventional technology roll microfilm is currently manufactured by 3M (Minnesota Minn.
ing＆Manufacturing) M type・
The film Fl contained in cartridge A, ANS I (American N) as seen in FIG.
ational 5standards In5tit
ute+Inc, ) standard type and film F2 housed in cartridge B.

These types of films F+ and F2 differ in whether or not they have a wide and strong leader tape T at the tip, due to differences in the structure of the cartridge itself that accommodates it and the film delivery type.

For these films F, , F, for example, in the case of a 16 m film, a leader tape T of 20.5 m is used. There is a difference between 20.5■ and 20.5■.

Problems to be Solved by the Invention In developing a roll film transport device that can be used commonly for both types of cassettes and films, in order to prevent meandering of the film, a film transport path between the supply reel and the take-up reel is It is necessary to have a film width direction positioning function.

As a roll film conveying device that can meet this demand,
It is conceivable to provide a dedicated transport path suitable for each film and selectively use it, or to replace the dedicated transport path or its film width direction positioning portion. However, the method of selecting and using an attached transport route makes the transport route extremely complicated, and the method of replacing the transport route or its parts requires the burden of arranging equipment, and it is complicated to replace, forgetting to replace, and having to replace the parts. Problems such as mistakes and loss of replacement equipment may occur. It will also be necessary to store equipment. In addition, as shown in FIG. 6, the positioning in the film width direction is made more accurate in order to accurately read the frame search mark f' provided corresponding to each frame f on films F+ and Fz. There is also a need to do so.

Means for Solving the Problems In order to solve the above-mentioned problems, the present invention provides a roll film conveying device that automatically feeds out a roll film wound onto a supply reel and automatically winds it onto a take-up reel. , a conveyance constriction portion whose minimum passage width corresponding to the width of the passing film is variable is provided at least at two locations before and after the projection position on the film conveyance path between the supply reel and the take-up reel.

The conveyance constriction section normally forms a passage width corresponding to the minimum width film, and is preferably widened to the required minimum passage width for a film with a wide tip, especially the wide tip part, and the passage width is regulated by an elastic guide. It is convenient if the wide tip of the wide tip film is expanded by being pushed against its own elasticity when the film passes through the wide tip, and then returns by itself after passing through the wide tip.

The passage width change corresponding to the width of the film passing through the transport constriction section is as follows:
It is preferable that they be made evenly in the front and rear with respect to the center of the passage corresponding to the projection optical axis.

The conveyance constriction section is located at least in two places on the film conveyance path, before and after the projection position, and has a minimum passage width corresponding to the width dimension of the film passing through, so that the width of the film passing through the projection position is different in size. However, it does not obstruct its passage, and its positioning in the width direction is performed at the two locations.

Example (Figs. 1 to 15) As shown in Fig. 1, roll film cartridges A (
16) to B (FIG. 17) and a roll film take-up reel 3, a roll film carrier used in a microfilm reader or a reader/printer is shown.

The loading section 2 is in the form of a housing into which cartridges A and B are loaded and unloaded from the side, as shown by arrow A, and has a reel drive shaft 4 at the rear and front thereof, and a presser 5 for pressing the reel against the drive shaft. Further, mechanisms 6 and 7 for leading each M and ANSI type film to the cartridges A and B to be loaded are also provided around the outside of the cartridge loading section (FIGS. 1 and 5).

Between the loading section 2 and the winding wheel 3, there are provided guide pairs 8, 9.10 and guide roller pairs 11.12 as shown in FIG.
, a roll film transport path 14 passing through the projection position is formed by the guide rollers 13. Upper and lower glass plates 15 and 16 for holding microfilm and an illumination light source are provided at the projection position. The space between the upper and lower glass plates 15 and 16 is designed to be opened automatically or manually during roll film loading so that the roll films F1 and Fz sent out from cartridges A and B pass through, but even when closed, the roll film F' It has running clearances of + and Fz.

The reel drive shaft 4, as shown in FIGS. 1 and 5,
a base shaft 4 connected to a motor 17 through a gear connection 18; The base shaft 4. is fitted onto the outer periphery of the tip of the base shaft 4. A cylinder shaft main body 4 □ that can be moved independently in the axial direction within a predetermined range, and the cylinder shaft main body 4
The M type reel drive for cartridge A is fitted onto the inner periphery of the tip of cartridge A, and is movable relative to the cylindrical shaft body 4 in the axial direction within a predetermined range by being guided by the engagement of the pin 21 and the elongated hole 22. Axis 4. and the cylinder shaft body 4. Square hole in the middle of the inner circumference 4.
A rear end corner shaft 4aa behind the flange 44b is fitted to the drive shaft 4.a so as to be rotatable together. It is combined with an ANS I type reel drive shaft 44, which is a square shaft that passes vertically through the center round hole (FIGS. 9 and 10).

The reel drive shaft 4 is a base shaft 4. One end is supported by a pair of frames 23 together with the motor 17 and its drive shaft, and the cylindrical shaft main body 4□ is held by a swinging frame 25 via a bearing 24 which is fixed in the axial direction at the outer peripheral part. . The swing frame 25 has an E-shaped body as seen in FIG. Main body 4. Holding the middle. This holding is achieved by inserting pins 27a protruding from two places on the vertical diameter line of the outer periphery of the ring 27 fitted into the bearing 24 on the cylinder shaft body 4 The cylindrical shaft body 4. is moved forward and backward in the axial direction.

M type reel drive shaft 4. A flange 43a that fits into the drive shaft receiving recess a2 of the reel a housed in the cartridge A is fixed to the tip thereof, and drive bins 43b are fixed at two locations on the front diameter line thereof. This drive pin 43b is inserted into the recessed portion a when the flange 4sa rotates.
When it is elastically fitted into the reel 2, it is fitted into one of the pairs of passive holes A, which are located at four locations around the central axis, and which are opposed on the diametrical line, opened in the back wall of the recess at, and the rotational driving force is applied to the reel. I am trying to transmit it to a1.

Drive shaft 4. The cylinder shaft main body 4t is moved by the spring 28 acting between the flange 43a and the tip of the cylinder shaft main body 4.
It is always energized to be at the maximum forward movement position,
Flange 4. It performs an elastic fitting action into the recess a of a.

On the other hand, the cylindrical shaft body 4□ works between pins 27b protruding from two places on the horizontal diametrical line on the outer periphery of the ring 27 and a pair of left and right anti-rotation guide fittings 29 fixed on the back of the loading section 2. The M type reel drive shaft 4. is biased to maintain the reel in the reel drive position. On the other hand, a solenoid 31 is connected to the lower support piece 25a of the swing frame 25, and when the solenoid 31 is turned on, the swing frame 25 swings backward, and the cylinder shaft body 4. Retract the drive shaft 4. .

44 is kept in the reel non-driving position.

This reel non-driving position is determined by another solenoid 32
3 and a stopper 35 connected by fitting into the elongated hole 34.
This is done by engaging the free end of the lower support piece 25a.

The stopper 35 is pivotally supported 36 in the middle thereof, and when the swinging frame 25 swings to the reel non-driving position, the hook portion 3 at the tip end
5a is once pushed up by the lower support piece 25a through which it passes, and then moves downward by its own weight to engage with the lower support piece 25a.

The ANS I-type reel drive shaft 44 is inserted into the square hole b2 of the reel bI to drive the reel b, with the tip flange 4xa of the M-type reel drive shaft 43 pressed against the side surface of the reel b of the roll film cartridge B. The M type drive shaft 4. can protrude from the flange 4°a by a sufficient amount to When the flange 4sa is drivably connected to the reel a, the flange 4sa may not protrude from the front surface of the flange 4sa.

The pusher 5 is provided on the back surface of the front wall of the loading section 2 and is biased toward the reel drive shaft 4 by a spring 37, and presses the cartridges A and B.
When the cartridge A is loaded, it retreats under pressure from the tapered tip portion 5a, and moves the loaded cartridge A itself or the reel B housed in the cartridge B onto the reel drive shaft 4.
9 and 10 to ensure the connection between the M type reel drive shaft 43 and the reel at, and between the ANSI type reel drive shaft 44 and the reel b1.

The take-up reel 3 is attached to a drive shaft 40 which is connected to a motor 38 through a gear connection 39, and the drive shaft 40 is held together with the motor 38 by a frame body 41.

The M type film leading end feeding mechanism 6 is operated by a guide roller 42 provided to move in and out of the window a4 of the M type film cartridge A in the direction of the arrow mark, as shown by the imaginary line in FIG. Send out the glue f at the tip of the film F wound around a. The guide roller 42 is pivotally supported by one end of a bell crank type lever 44 which is pivotally supported by a horizontal shaft 43 as shown in FIG.
It is driven by a belt transmission system 46 which is driven from time to time via an intermediate boot IJ45 on the shaft 43. The lever 44 moves the guide roller 42 through the window a by means of a spring 47 acting on the other end.
The guide roller 42 is biased to be always positioned at a standby position outside the window a4, and the guide roller 42 is forced to face the inside of the window a4 against a spring 47 by the action of a solenoid 48 connected to the other end.

The ANSI type film leading edge cutting mechanism 7 is the 17th
As shown in phantom lines in the figure, there is a long hole in the bottom of the ANS ■ type film cartridge B.

In contrast, a drive belt 49 that moves in and out in the direction of arrow C,
For the front film feed port b4 of cartridge B,
The leading end of the film F2 wound around the reel b1 is sent out by a guide belt 50 which is moved in and out in the two directions indicated by the arrows.

The drive belt 49 is rotationally driven by a drive source (not shown) from time to time, and is operated by a pulley 52a on a horizontal drive shaft 52 held by a frame 51 and a bifurcated support lever 53 whose base is pivotally supported by the drive shaft 52. The distal end of the arm 53a is stretched between the upper pulley 54 and the arm 53a. The bifurcated support lever 53 has its passive arm 53b supported by an upper swing pin 58a at the lower end of a swing lever 58 whose upper end is supported by a shaft 55 and connected to a rotary solenoid 56 by a spring 57, and when the solenoid 560 is turned on. The drive belt 49 is lifted up by the pin 58a and lowered when turned off to move the drive belt 49 into and out of the elongated hole.

The guide bell 1-50 is stretched between the upper and lower boots 1761 and 62 on the outer surface of the U-shaped folded upward piece 60a at the tip of the support lever 60 whose base end is pivotally supported by a shaft 59 protruding from the rear wall of the loading section 2. has been done. A pulley 64 connected to the drive shaft 52 and a gear connection 63 is rotatably provided on the shaft 59, and a driven booby IJ66 provided on the rotating shaft 65 of the pulley 62 within the U-shaped portion at the tip of the support lever 60 and the aforementioned A belt 67 is stretched between the pulley 64 and the guide belt 50, so that the guide belt 50 and the drive belt 49 are simultaneously driven by the drive shaft 52. The support lever 60 is connected to the passive arm 53b of the bifurcated support lever 53 by a spring 68, and the bifurcated support lever 53
As the drive belt 49 moves in and out of the elongated hole b3,
The guide belt 50 is also moved in and out of the film feed opening at the same time.

Furthermore, a rack 69 is provided which is fixed to the ring 27 and is located on the rear side of the cylinder shaft body 4, and a pinion 70 that meshes with the rack 69 is connected to a damper 72 on a support plate 71 via a one-way clutch. ing. As the damper 72, for example, one manufactured by Nifco Corporation is used. The one-way clutch connects the pinion 70 and a damper 72 to the rotation of the pinion 70 when the cylinder shaft main body 4z is advanced to the reel drive position, and suppresses the forward speed of the cylinder shaft main body 4□ with the damper 72. When the movement is in the opposite direction, the pinion 70 and the damper 72 are disconnected and the damper 72 is moved as the cylinder shaft body 4□ retreats.
make sure that it is not affected.

The base plate 76 equipped with the above roll film carrier is
The base 77 is held so as to be movable back and forth with respect to the optical system by being guided by the engagement of a long hole 78 and a pin 79.
A rack 8° fixed to the base plate 76 faces onto the base plate 76 through the window 76a of the base plate 76, and a pinion 81 installed on the plywood 76
It is intertwined with. The pinion 81 is directly connected to a motor 83 attached to a frame 82 on the base plate 76, and the base plate 76 is moved back and forth by the drive of the motor 83, so that the front and rear positions of the projection portions of the roll films F1 and F2 can be adjusted. There is.

Inside the loading section 2, a pair of upper and lower cartridge detection switches 84 and 85 are provided as shown in the imaginary lines in FIG. On the other hand, the upper switch 84 is pushed when either cartridge A or B is loaded, and detects the loading of cartridge A or B, whereas the lower switch 84
5 is pushed only when the cartridge is loaded, and the type of the loaded cartridge can be detected by whether or not the switch 85 is pushed, provided that the switch 84 is pushed.

On the other hand, even if the films F and F2 are the same 16 m film, the leader tape T provided on the film F has a width of 20.5N, making the leading end width of the film F wider. The transport path 14 that serves both these films F, , F,
-t- In order to pass through the film F1 without difficulty and to convey the normal width portion of the film F1 and the entire film F2 without wobbling, especially at the projection position, the minimum conveyance path width matching the minimum film width is elastically set before and after the projection position of the conveyance path 14. Aperture guides 86 and 87 are provided as conveyance aperture portions 14a that can be expanded to maintain the width (FIGS. 1 and 2).

As shown in FIGS. 3 and 4, the guides 86 and 87 form a narrow conveyance path 14b that gradually reduces the width of the conveyance path on the film winding direction side of the guide pair 9.10. It is attached to the side plate 14G as an elastic tongue piece extending in the film winding direction, and the tip is an inwardly convex arcuate guide that does not get caught when the film width changes in the film winding, unwinding and reconveying direction. portions 86a and 87a, and the minimum conveyance path width is always maintained.

The upper roller 12. of the guide roller pair 12 corresponds to the conveyance aperture of the guides 86.87. The take-up reel 3 is of a type with variable flange spacing, and the guide roller 13 is a stepped roller.

As shown in FIGS. 6 and 7, the upper guide roller 121 has a half-sized guide shaft 12b with a single flange 12a attached to the support shaft 88 so as to be movable in the axial direction by being guided by an elongated hole 12c and a pin 89. The film F is always kept in the abutting state in which the dimension between the flanges 12a is a minimum value of 1600.1 to 0.2 mm, which corresponds to the minimum film width of 16 mm, by the urging from both sides by the spring 90. The left and right guide shafts 12b are separated from the leader tape T by pushing the flanges 12a to both sides by the tape T, and the dimension between the flanges 12a is moved back and forth to the width of the leader tape with respect to the neutral position corresponding to the projection optical axis. Spread evenly.

The winding rule 3 is attached to a support shaft 9 as shown in FIG.
1, a half-sized winding shaft 3b with a single flange 3a is mounted so as to be movable in the axial direction guided by a long hole 3c and a pin 92,
Due to the bias from both sides by the spring 93, the dimension between both flanges 3a is reduced to the minimum value 16+0.0, which corresponds to the minimum film width of 16 m.
It is always maintained in a butting state where the number of cranes is 1 to 0.2. Adjustment of the distance between the flanges 3a with respect to the film is performed using the upper guide roller 12. It is no different from the case of .

The take-up reel 3 also has a large number of film winding pawls 3d on both flanges 3a, the free end of which is radially protruding from the inner surface of the flange 3a, and faces the outer periphery of the take-up shaft 3b. The space between the two flanges 3a is expanded to a dimension corresponding to the width of the leading edge of the film by the leading edge of F2 and F2, and the leading edge of the supplied film is received without difficulty regardless of the width, and the leading edge of the entering film is connected to the claws 3d on both sides of the inner surfaces of both flanges 3a. By getting caught inside, the leading edge of the film is held between the friction ring 94 made of rubber or the like wrapped around the outer periphery of the winding shaft 3b as shown in the imaginary line in FIG. I'm going to wind it up.

The guide roller 13 has a maximum width guide circumferential surface that guides the wide leader tape T between both flanges 13a and a maximum diameter outer circumferential surface 13b, and a medium diameter guide roller that guides the normal width portion of the film F+ and the entire film F2 at both ends. An outer circumferential surface 13c is formed inside the outer circumferential surface 13b, and a minimum outer circumferential surface 13d as a relief for the films F, , pg is formed at the center.

The guide roller pair 11 consists of a stationary lower roller 11+ with a passive gear 94 and an upper roller 11□ with a drive gear 98 that is pivotally supported 97 on the tip of a lever frame 96 that is pivoted 95. The upper roller l1g is urged upward by the lower roller 11+ at all times, and the drive gear 98 is also separated from the driven gear 94. The lever frame 96 further includes a solenoid 1.
00 is connected and the automatically supplied film tip is other than the strong leader tape T, solenoid 1
00 is activated to press the upper roller llz against the lower roller 11+ against the spring 99, and at the same time, the driving gear 98 is engaged with the passive gear 94, and the upper roller 11° driven by the motor 101 comes into pressure contact with the upper roller 11°, and the gear 94. The lower roller 11.98 is also driven via the lower roller 11.98. This applies a conveying force to the weak leading end of the automatically supplied film, thereby improving the progress of the automatically supplied film along the conveying path, especially the ability to enter and pass through each guide portion at the projection position.

The guide roller pair 12 is attached to the lever frame 10 which is pivoted 102.
The lower roller 12° is pivoted at the tip of the lever frame 103, and the upper roller 12+ is connected to the encoder 105.
The upper roller 12. The lower roller 12g pressed against the lower roller 12g guides the automatically supplied film while filling it, regardless of the presence or absence of the leader tape T, and reliably sends the film between the upper and lower glasses 15 and 16 at the projection position.

Around the take-up reel 3, there is a film leading end guide member 107 that guides the leading end of the film that is automatically supplied to the take-up reel to the winding shaft 3b, and a film leading end guide member 107 that acts on the leading end of the automatically fed film before this and guides the leading end of the film that is automatically supplied to the winding reel. A film pressing member 10B is provided to press the film.

The film leading edge guide member 107 is a lever member that is installed horizontally under the winding wheel 3 and whose tail end side is pivotally supported 109. This guide portion 107a has a circular shape that approaches
The member 107 moves in and out between both flanges 3a of the take-up reel 3 by vertically swinging around the shaft 109, and moves toward and away from the take-up shaft 3b.

A film pressing member 108 is installed horizontally on the upper side of the take-up reel 3, has its tail end supported by a shaft 110, and winds up an automatically supplied film at its tip that can enter between both flanges 3a of the take-up reel. For pressing against the winding shaft 3b, a roller 111 is rotatably provided at two locations, front and rear, and the roller 111 is always kept apart from the winding shaft 3b by the bias of a spring 112 acting on the member 108. Roller 1 of member 10B
11 Place the tip of the automatic supply film in front of the attachment part on roller 11
A guide piece 108a is provided to extend between the winding shaft 1 and the winding shaft 3a.

The film leading edge guide member 107 and the film pressing member 108 are pin-connected 113 and 114 by a link 118 between their pivoted tail end and pivoted leading end side. A solenoid 115 is connected to the connection pin 114 on the film pressing member side, and when activated, it presses the film pressing member 108 against the winding shaft 3b against the bias of the spring 112, and guides the film leading edge guide member 107 via the link 118. The portion 107a is moved to an operating position close to the winding shaft 3b.

An arcuate guide 116 is provided on the back of the take-up reel 3 and is located outside the film winding area between the flanges 3a, so that the film can still be wound on the take-up shaft 3b even after passing between the film holding member 108 and the take-up shaft 3b. The leading edge of the film, which is about to move straight without being pushed forward, is guided by the film leading edge guide member 107, thereby ensuring that the leading edge of the film is guided by the member 107.

A series of operations will be explained below. When a film cartridge A or B is loaded into the loading section 2, cartridge detection switches 84 and 85 provided in the loading section 2 are pushed depending on whether the loaded cartridge is A or B. The operation control microcomputer receives signals from the switches 84 and 85, determines the type of loaded cartridge, and starts the roll film loading operation.

During this operation, the solenoid 32 in FIG.
a to make the swinging frame 25 freely swingable. When the swing frame 25 becomes free, the cylindrical shaft main body 4t of the reel drive shaft 4 acts on it (the springs 3 on both sides
0 bias and the action of the damper 72, while swinging the swing frame 25, it is pushed out from the base shaft 41 at a low speed, and the M type reel drive shaft 4 is rotated at a low speed through the spring 28 to the re-advance position at a low speed. move it. Along with this, ANS I
The type reel drive shaft 44 is also advanced to a predetermined drive forward position.

At the same time as the respective type reel drive shafts 4s and 4m advance at low speed, they are rotated at low speed by turning on the motor 17,
Cartridge A loaded and pressed by the pusher 5
'It is slowly pressed against the PB while rotating at low speed.

When the cartridge A is loaded, the tip flange 4sa of the drive shaft 4 fits into the recess a2 of the reel a accommodated in the cartridge A, and the drive pin 43
While pressing b into the back wall of the recess a2, it is fitted into the set of passive holes a as shown in FIG. 9, and the connected state is achieved.

When the cartridge B is loaded, the tip flange 4sa of the drive shaft 4 comes into contact with the end face of the barrel b housed in the cartridge B, as shown in FIG. 10, and further advance is prevented. In contrast, the drive shaft 4. is cylinder shaft body 4□
The flange 4i is further advanced independently by the flange 4i.
It protrudes beyond point a and rotates in pressure contact with the opening of the square hole b2 of the reel b1, and then fits into the square hole bt to form a connected state as shown in FIG.

Based on the position signal of the drive shaft 4 when the connected state is reached, the drive shaft 4 is driven for a certain period of time in the opposite direction to the film feeding direction to reversely rotate the connected reels a and y and wind them. Wrap the rotating films F and F2 appropriately to eliminate slack. After that, the motor 17 is temporarily turned off.

Here, if the type of the loaded cartridge is determined to be M type cartridge A, the corresponding solenoid 48 of the M type roll film leading edge feeding mechanism 6 is turned on, and the guide roller 42 of the mechanism 6 is moved to the window 8 of the cartridge A.
It is made to enter into the fourth part and can act on the leading end feeding of the film F1.

If the type of the loaded cartridge is determined to be ANSI type cartridge B, the rotary solenoid 56 of the corresponding ANSI type roll film leading edge feeding mechanism 7 is turned on, and the drive belt 49 and guide belt 50 of the mechanism 7 are set to the length of the cartridge B. It is inserted into the hole b3 and the film feed-out port b4 so that it can act on feeding the leading end of the film F2.

When the film leading edge feeding mechanisms 6 and 7 reach their operable positions, the clutches and motors act to drive the guide roller 42 and drive and guide belts 49 and 50. Further, at this time, the drive shaft 4 is free to rotate.

When the cartridge A is loaded, the guide roller 42 applies film feed rotation to the once wound film F. This rotation is efficiently transmitted to the leading edge of the film F, and the leading edge of the film F1 is a strong and wide leader tape T, which moves toward the film feed port AS with outward progress toward the outside of the film winding. will be sent to the destination without any difficulty. At this time, the film leading edge feeding mechanism 7 is retracted to a non-operating position and has no effect on feeding out the leading edge of the film F1.

When the cartridge B is loaded, the belt 49 applies film feed rotation to the once wound film F2. Although this rotation is efficiently transmitted to the leading edge of the film F, the leading edge of the film F2 does not have a leader tape for pulling out and is weak, so the response is slightly lower than that of the film F1. However, since the drive belt 49 of the mechanism 7 contacts the film winding outer periphery where the leading edge of the film Ft is located and rotates in the film feeding direction, the leading edge of the film Fz quickly and reliably moves inside the cartridge B to the film feeding port b4. I am directed towards it. Film F2
Even if the tip reaches the film feed port b4, it does not move away from the outer periphery of the film winding because it is weak and has a low ability to advance outside the film winding.
4 is kicked out of the delivery port b4 by the guide belt 50 facing the lower part. At this time, the other film leading edge feeding mechanism 6 is retracted to a non-operating position, and the film F
2 It has no effect on the feeding of the tip.

Film F sent out from loaded cartridge A or B,
The tip of the reel and F2 rides on the guide plate 8, and
Continuation of the film feeding drive by the drive of b+ causes the film to reach the winding wheel 3 through the transport path 14. At this time, the pair of guide rollers 11 are pressed against the film F2, which does not have a leader tape at the tip and has poor progressability, so as to nip and convey it, thereby ensuring that the film F3 is fed to the winding wheel 3. Further, the roller pair 11 is separated from the film F, which has good progressability and has a leader tape T at the tip, and the leader tape T is only roughly guided, and the conveyance path 14 is
The roller pair 11 is moved smoothly until the winding wheel 3 is reached.
This prevents you from getting fatigued and weakening your back by holding it in place.

The guide roller pair 12 in front of the projection position on the conveyance path 14 is
The tip of the film F or F2 that has passed through the roller pair 11 is inserted into the receiver and guided while following it, and is guided through the conveyance aperture section 14a of the guide pair 9 to enter between the upper and lower glass plates 15 and 16 at the projection position. .

The supplied films F+ and F2 coming out from between the upper and lower glass plates 15 and 16 reach the take-up rule 3 via the guide roller 13, the guide pair 10, and the conveying constriction portion 14a thereof.

When the leader tape T of the film F1 is automatically supplied, the conveyance aperture section 14a and the upper guide roller 12 on both sides of the projection position are evenly spread before and after the position corresponding to the projection optical axis, and the deviation of the center position in the width direction is prevented. The guide roller 13 passes through it smoothly without any vibration, and the guide roller 13 has its maximum diameter outer circumferential surface 13b.
The leader tape T is kept steady by being guided by the flange 13a at. When the leader tape T has finished passing,
Each conveyance aperture section 14a and the upper guide roller 12 return to the initial state and continue to guide the normal width portion of the film F+ so that the center position in the width direction is not deviated. The normal width part of F1 is lowered to provide a steady rest by the stepped part with the maximum diameter circumferential surface 13b.

In the case of film F2 without a leader tape, it receives the same guidance as the normal width portion of film F from its initial stage.

As a result, regardless of the presence or absence of the leader tape T, the film F or F2 smoothly reaches the winding wheel 3 through the projection position on the film transport path 14 without causing deviation in the center position in the width direction.

When the supply film reaches the guide roller pair 11 and the upper roller 11 □ follows, the encoder 105 is started, and the take-up reel 3 is driven to rotate at a higher speed than the film supply speed by operating the motor 38. The film is fed to the rotating take-up reel 3. Along with the rotational drive of the winding wheel 3, the solenoid 115
By turning on, the film pressing member 108 and the film leading edge guide member 107 are moved to the operating position shown in solid line in FIG. 11 against the bias of the spring 112.

If the film fed into the take-up reel 3 that is being rotated in the state shown by the solid line in FIG. 11 is a film F+ having a leader tape T, then the leader tape T
While spreading both flanges 3a of the take-up reel 3 evenly in front and back of the position corresponding to the projection optical axis, the film in the reel 3 is pressed between the member tip guide piece 108a and the take-up shaft 3b. The rear part of the guide piece 108a is pressed by roller 1.
11 against the winding shaft 3b, the tip thereof is hooked on the film winding claw 3d of the flange 3a, and is held by friction between it and a friction ring 94 on the outer periphery of the winding shaft 3b. When this frictional holding state is maintained for one rotation or more of the winding wheel 3, the leader tape T is wound around the winding shaft 3b as it is, and automatic winding is achieved. However, leader tape T has a thickness of 7 mils to 10 mils and film F.

Normal part, film F2 thickness 2.5ml to 5m
Since it is several times thicker and stronger than 1L, it has great straightness, and even if it is once held by friction between the claw 3d and the winding shaft 3b, it tries to go straight and loses the frictional hold, and is wound up on the winding shaft 3b. Sometimes there isn't.

The tip of the leader tape T that has not been wound is attached to the winding shaft 3.
b and pressing try to go straight from between the rollers 111 and hit the arcuate guide 116, and are guided toward the film leading edge guide member 107 side. As a result, the tip of the tape T advances along the member 107 and the tip of the tape T moves to the tip film guide section 1.
07a, the winding shaft 3a is again directed between the tape T that is pressed by the roller 111, and the tape that is pressed by the roller 111 and the tape T that is pressed by the roller 111 is redirected between them. Receive via T. At this time, the leading end of the tape T is again engaged with the claw 3d and held by friction between it and the friction ring 94 on the outer periphery of the winding shaft 3b. This frictional holding is performed under the trailing portion of the tape T that is pressed against the winding shaft 3b and wound following the leading end, and is performed under conditions that greatly restrict the straightness of the leading end of the tape T. Therefore, the frictional retention of the tape T tip becomes firm, and the automatic winding of the tape T tip onto the winding shaft 3b and the subsequent automatic winding are achieved by the difference in friction between the friction ring 94, the tape T, and each tape T. Ru.

In the case of film F2 without a leader tape, it can be received as is on the take-up reel 3, and the pressing is done by the roller 11.
1, automatic winding is almost certainly achieved by frictional holding when first pressed against the winding shaft 3b. In the unlikely event that the leading edge of the film F2 is curled or curled in the opposite direction from the winding side, the leading edge of the film may not be automatically wound by the initial push against the winding shaft 3b. When the film is held again by friction guided by the film leading edge guide 108, automatic winding can be achieved more reliably than in the case of the leader tape T since it is weaker.

A fixed amount of film F or F2 is wound onto the take-up reel 3, and when the count of pulse signals from the encoder 105 reaches a fixed number, the motors 17 and 38 are turned off, and the motors 17 and 38 are turned off depending on the loaded cartridge A or B. The film leading edge feeding mechanisms 6 and 7 that have been activated are stopped and returned to their non-operating positions.

This completes the film loading operation.

Next, by selectively driving the motors 17 and 38, the loaded film F+ or F2 is wound or rewound so that a predetermined frame is brought to the projection position, and the predetermined frame is read or printed.

The search for a given piece is carried out by reading the piece mark f' provided corresponding to each piece f as shown in FIG.
For accurate reading, the accuracy of the widthwise position of the films F, , F, on the transport path 14 is a problem, but the aperture guides 86 and 87 as the transport aperture section 14a that can be widened are
In addition to being widened to accommodate the wide leader tape T, the normal portion of the film F1 and the film F are kept at a constant center position in the width direction from beginning to end and moved along the conveying path 14 without wobbling or meandering. The reading of f' is achieved accurately.

In order to accurately position the films F+ and Fz in the width direction, it is effective to provide the conveyance aperture portions 14a at two or more locations on the conveyance path 14, and one example of this is shown in FIG.
As shown by the imaginary line in FIG. 2, the upper and lower glass plates 15 at the projection position.
It is also possible to arrange elastic guide pieces 117 on the left and right sides of the film path.

To remove the loaded gartridges A and B, first, the films F1 and F2 are rewound, and after the rewinding is completed, the drive shaft 4 is moved back. Then, the solenoid 48 is turned on, and the M type film feeding roller 42 is moved to the operating position. The movement of this roller 42 pushes the cartridge B itself, the reel a1 inside the cartridge A, or the film F rewound thereon, and loads the loaded cartridges A and B into the loading section 2.
It is automatically pushed out appropriately. This automatic extrusion may be performed to the extent that the cartridges A and B do not fall off due to extrusion, and the retraction timing of the drive shaft may be performed at the same time as or after the movement of the roller 42 to the operating position.

According to the present invention, the conveyance aperture section is located at least in two places on the film conveyance path, before and after the projection position, and has a minimum passage width corresponding to the width dimension of the film to be passed, and Even if the width of the film passing through the film differs in size, its passage is not hindered or the film is positioned in the width direction at the two locations, so the same film transport path can be shared for transporting multiple films with different widths, especially at the leading end. Moreover, accurate positioning in the film width direction at least at the projection position can be performed.

[Brief explanation of the drawing]

Fig. 1 is a perspective view showing an example of a roll film carrier, Fig. 2 is a front view of the film transport path, Figs. 3 and 4 are a plan view and a slope view of the transport constriction section, and Fig. 5 Figure 6 is a slope view of the film cartridge loading section, Figure 6 is a slope view of the guide roller group of a part of the film transport path, Figure 7 is a sectional view of the guide roller section with variable distance between flanges, Figure 8 is each type of film cartridge and cartridge type. A partial perspective view showing the relationship with the detection switch, Figure 9 is a sectional view showing the reel drive shaft connected state when an M type film cartridge is loaded, and Figure 10 is a reel drive shaft connected state when an ANS I type film cartridge is loaded. 11 is a sectional view of the film winding section, FIG. 12 is a vertical sectional view of the take-up reel, FIG. 13 is an oblique view showing the flange of the take-up reel, and FIG. 14 is the main part of the flange. 15 is a partial cross-sectional view of the flange, FIG. 16 is a perspective view showing the reel removal state of the M type film cartridge, and FIG. 17 is a perspective view showing the reel removal state of the ANS I type film cartridge. It is. aI+ b+... Supply reel, F+, Fz... Roll film, T... Leader tape, 3... Winding reel, 14... Film conveyance path, 14a... Conveyance squeeze section. Applicant: Minolta Camera Co., Ltd. Figure 2 Figure 3 Figure 4 Figure 7 Figure 8 Figure 6 Figure 9 Tube 0 Figure 11th: 116 Figure 1117 Figure

Claims (1)

[Claims] (1) In a roll film conveyance device that automatically feeds out the roll film wound on the supply reel and automatically winds it on the take-up reel, at least two locations on the film conveyance path between the supply reel and the take-up reel, before and after the projection position. A roll film conveying device characterized in that a conveying constriction section is provided that has a variable minimum passage width corresponding to the width dimension of the passing film.