JPH07219149A - Photographic film introducing member - Google Patents

Abstract

PURPOSE:To smoothly conduct photographic film into the slit of a spool by locking the film without forcibly reversely curling it even in the case of firmly curled film. CONSTITUTION:A double end pawl 60 is provided on both sides in the width direction of a center pawl 58, and the pawl 60 has such a length that its tip positionally projects from the trailing edge of film 100 in a photographic film locked state where the pawl 58 is engaged in the catch hole of the film 100, and the pawl 58 has such length that it projects further than the pawl 60. Therefore, the pawl 58 is easily engaged in the catch hole of the film by carrying the film 100 to a specified position and turning a plate 34 in synchronism with carrying the film from the specified position. In the case of the curled film, the pawl 60 corrects curling nearly as soon as or somewhat later than the pawl 58 is engaged in the catch hole.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic film introducing member, and more particularly, to the inside of a cartridge for locking a photographic film having a hook hole formed at a rear end thereof in a cartridge for winding the photographic film. The present invention relates to a member for introducing a photographic film to be introduced into the spool.

[0002]

2. Description of the Related Art The most popular 135 type photographic film cartridge has a cartridge body formed by forming a thin metal plate into a cylindrical shape and two caps to form a cartridge body, and a spool around which the photographic film is wound. It has a structure that stores.

As a method for assembling this photographic film cartridge, as disclosed in Japanese Patent Publication No. 2-691, a photographic film is prepared in a state of being wound on a spool, and the cartridge body is worked by working in a dark room. The method of assembling so as to wrap it in, and Japanese Patent Publication Sho-60-
As described in Japanese Patent No. 48748, the patrone body once assembled is partially disassembled at the photographic film incorporating portion in the dark room, and a spool around which the photographic film is wound is put thereinto to reassemble the patrone body. There is a way to do it.

In Japanese Patent Laid-Open No. 49-107732 and Japanese Patent Laid-Open No. 52-77723, a film cartridge formed in the cartridge body is prepared in advance in a bright room. Insert the tongue-shaped guide plate into the passage, and use this as a guide to insert the photographic film into the main body of the cartridge from the rear end side.After locking the rear end of the photographic film to the spool, rotate the spool. It rotates so that the photographic film is wound around the cartridge while being wound inside the cartridge.

By the way, US Pat. No. 4,834,306
According to the specification, No. 4,846,418, and Japanese Patent Laid-Open No. 3-37645 by the applicant of the present application, the cartridge body is assembled with a resin molded product, and the photographic film is rotated by rotating the spool. A photographic film cartridge having a function of sending out is known. This photographic film patrone is different from the previous ones, and the leader part of the photographic film does not protrude from the patrone body in both unused and used states.
Not only can the photographic film be stored in a light-tight manner, but it can be easily handled before and after use.

[0006] Recently, various photographic film winding devices have been developed which apply the technique of the cartridge. In this type of photographic film winding device, a side-view arc-shaped attachment plate provided with a claw engageable with a hook hole formed at the rear end of the photographic film at its tip is synchronized with the conveyance of the photographic film. , The pawl is engaged with the hooking hole of the photographic film, and the attaching plate guides the rear end of the photographic film through the film passage of the cartridge into the slit formed in the shaft of the spool. It is supposed to stop.

[0007]

The photographic film after use usually has a tendency to curl so that the emulsion surface side is concave, and in a cartridge, the photographic film is wound on a spool with the emulsion surface side being the inner surface. As shown in FIG.
As shown in FIG. 4 (A), a center claw 152 is provided at the center of the tip of the attachment plate 150.
52 is a photographic film 100 as shown in FIG.
When the photographic film 100 is locked by engaging with the hook hole 102 at the rear end, both ends of the photographic film having a tight curl droop downward as shown in FIG. There was a risk that it could not be inserted into the spool slit.

In order to improve such inconvenience, as shown in FIG. 15, both ends in the width direction of the tip of the attach plate 150 are made to project from the end surface 150A, and the projecting size of the projecting portion 154 is set as a hooking hole in FIG. 14B. If it is longer than the dimension B from 102 to the rear end of the photographic film 100, both ends in the width direction of the photographic film curled by the protrusions 154 can be lifted, and it is considered that the curl can be corrected. However, as in the case of FIG. 15, when the center claw 152 and the protruding portion 154 are flush with each other, the case of a photographic film curled so that the emulsion surface side is concave, of course, Even in the case of a horizontal photographic film with no such curl, the protrusion 154 pushes up the photographic film 100 before the center claw 152 is caught in the hook hole 102, and the attachment plate 150 and the photographic film 100 are engaged. May not work well.
In order to improve such a problem, the photographic film 100
It is possible to forcibly curl in the opposite direction (so that the emulsion surface becomes convex), but in such a case, a mechanism for forcibly imparting curl to the photographic film 100 is indispensable. However, the configuration becomes complicated and the cost also increases.

On the other hand, in a photographic film winding device,
When the photographic film 100 is locked by the attachment plate 150, the photographic film 100 is conveyed to a predetermined position by a conveyance roller, and the attach plate 150 is rotated from this position in synchronization with the conveyance of the photographic film 100 to rotate the center claw. 152 is a hook hole 10 of the photographic film 100.
It is usually done to engage two. Therefore, after the center claw 152 is engaged with the hook hole 102 of the photographic film 100, when the attach plate 150 is further rotated toward the cartridge side in order to introduce the photographic film 100 into the cartridge, the nip pressure of the conveying roller is increased. As a result, as shown in FIG. 16, a back tension T is applied to the attach plate 150, and when this force T is large, the attach plate 150 is deformed (deformation amount vertical component δ) and deviates from the original orbit and the film passage of the cartridge. There was an inconvenience that it might not be possible to pass through. In order to prevent the deformation of the attach plate 150, the thicker the attach plate 150, the better. However, in the case of the thick attachment plate 150, as shown in an enlarged view in FIG. 17, when the device, the tolerance of the cartridge, the positional deviation, etc. are taken into consideration, when the attachment plate 150 is inserted into the slit 158 of the spool 156. However, there is an inconvenience that the locking claw 160 of the spool 156 is hidden due to the thickness of the member and the photographic film 100 and the spool 156 cannot be locked.

The present invention has been made in view of the above circumstances. A first object of the present invention is to provide a photographic film having a strong curl without forcibly giving the curl in the opposite direction. It is an object of the present invention to provide a photographic film introducing member that can be more smoothly introduced into the slit of the spool by locking the.

A second object of the present invention is to provide a photographic film introducing member which can effectively reduce defective insertion of the photographic film into the cartridge and defective engagement between the photographic film and the spool. .

[0012]

The invention according to claim 1 is
A center claw is provided at the center of the front end in the width direction, and the center claw is rotated about the tangential direction of the film transport path to engage the center claw with a hook hole at the center of the rear end of the photographic film in the width direction to engage the photographic film. Is a member for introducing the photographic film into the slit of the spool inside the cartridge, and the leading end position in the photographic film locking state in which the center claw is engaged with the hook hole on both sides in the width direction of the center claw. Is provided with both-end claws having a length projecting from the rear end of the photographic film, and the center claw has a length further projecting from the both-end claws.

According to a second aspect of the present invention, a center claw is provided at the center of the leading end in the width direction, and the center claw is rotated about the tangential direction of the film transport path to move the center claw to the center of the rear end of the photographic film in the width direction. A photographic film introducing member that engages with the hook hole to lock the photographic film and introduces it into the slit of the spool inside the cartridge, and only the wall thickness of the tip portion inserted into the slit of the spool is the slit. It is characterized in that it is thin enough not to prevent the engagement between the inner locking claw and the photographic film.

[0014]

According to the photographic film introducing member of the present invention, both end claws are provided on both sides of the center claw in the width direction, and the both end claws are engaged with the photographic film by the center claw. In this state, the leading end position is set to a length protruding from the rear end of the photographic film, and further, the center claw is set to a length protruding further than both end claws, so that the photographic film is conveyed to a predetermined position, and the photographic film is transferred from this position. By rotating the introduction member in synchronization with the conveyance,
The center claw easily engages with the catch hole in the photographic film. In this case, when the photographic film is a so-called curl film in which the emulsion surface is curled,
When the center claw engages with the hook hole, the claws at both ends lift the curled end portions of the photographic film at almost the same time or with some delay, the curl is corrected and the film approaches a flat film shape. Therefore, when the introducing member is further rotated, the photographic film is smoothly introduced into the slit of the spool.

According to another aspect of the present invention, there is provided a photographic film introducing member, wherein the center claw is engaged with the hooking hole of the photographic film and the rear end portion of the photographic film is introduced into the slit of the spool by the introducing member. In addition, since only the tip of the introduction member inserted into the slit is thick enough not to interfere with the engagement of the locking claws in the slit with the photographic film, the tolerance and displacement of the device and cartridge Even in consideration of the above, the engagement between the locking claw and the photographic film is not hindered due to the thickness of the introducing member. Further, in this case, since only the wall thickness of the tip portion is thinned, it is unlikely that the introduction member is deformed due to back tension and largely deviates from the original trajectory as in the case where the entire introduction member is formed thin. .

[0016]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described below with reference to FIGS.
It will be described based on.

FIG. 1 is a schematic perspective view of a photographic film winding device 10 including an introducing member according to an embodiment.

The winding device 10 is roughly composed of a setting portion 12, an attach plate driving portion 14, a spool driving portion 16, a conveying portion 18, and the like.

The setting section 12 is a section for setting a cartridge (corresponding to a conventional cartridge) 20 for winding the photographic film 100. This set part 12
Is composed of a base portion 12A in which a concave groove for accommodating the lower half of the cartridge 20 is formed, and a lid portion 12B capable of undulating and pivoting around the rear end edge of the base portion 12A. . When the cartridge 20 is set, the lid 12B is opened by rotating it counterclockwise in FIG. 1, the lower half of the cartridge 20 is housed in the groove of the base 12A, and then the lid 12B. Is rotated clockwise in FIG. 1 to close it. As a result, the cartridge 20 is set with the film passage 22 facing the photographic film 100 side, as shown in FIG. However, a certain clearance is provided between the cartridge 20 and the setting section 12, and the spool drivers 40A and 40B and the door driver 62 which will be described later are provided.
But the spool hole 24 on the side of the cartridge 20 and the door hole 2
6 and the cartridge 2 respectively.
0 is positioned and fixed.

The attach plate drive unit 14 has a rotating arm 30 which is rotatable about the shaft 28 in the clockwise and counterclockwise directions of FIG.
And a belt mechanism 34 that transmits the output of (see FIG. 2). A base end of an attach plate 34 as an introducing member made of a metal plate having an arcuate shape in a side view is fixed to a rotating end of the rotating arm 30 with a screw. For this reason,
By the rotation of the motor 32, the rotating arm 30 is erected and rotated about the shaft 28 via the belt mechanism 34.

The spool drive unit 16 includes a pair of side walls 36,
38, and a pair of spool drivers 40A, 40B, each of which is axially supported by the shaft 38, and whose tip end is arranged to face the spool hole 24 on the side surface of the cartridge 20 set in the setting portion 12.
And a drive means (not shown) for driving one spool driver 40A. The pair of spool drivers 40A, 40B are capable of reciprocating in the direction in which the respective tips approach and separate (the direction of arrow B, arrow C in FIG. 1). Therefore, when the cartridge 20 is set in the setting portion 12, the tips of the spool drivers 40A and 40B can be inserted and held in the spool holes 24 formed on both side surfaces of the cartridge 20, and in this state. If one spool driver 40A is driven by a driving means (not shown), the spool 64 described later can be rotationally driven.

The transport section 18 has a pair of fixed guides 42A and 42B arranged on both sides in the film width direction along the transport path of the photographic film 100, and the fixed guides 42A and 4B.
A conveyance roller 46 and a nip roller 48 which are vertically arranged to face each other in the portion 2B via a conveyance path (see FIG. 2).
And a belt mechanism 52 (see FIG. 2) that transmits the driving force of the motor 50 to the transport roller 46.
In FIG. 2, reference numeral 90 denotes an edge sensor for detecting the trailing edge of the photographic film, and the edge sensor 90 is, for example, a transmission type or reflection type optical sensor for detecting the edge in a non-contact manner. Is used.

The conveying roller 46 and the nip roller 48 are
The photographic film 100 is nipped and conveyed, and the height of the contact point between the two is substantially the same as the height of the guide grooves 54A and 54B provided on the inner side surfaces of the fixed guides 42A and 42B. .

A center claw 58 is provided at the center of the attach plate 34 in the width direction, and a pair of both end claws 60 are provided on both sides of the center claw 58 in the width direction. As shown in FIG. 3, the center claw 58 is formed of a wide portion 58A and a claw portion 58B provided at the tip of the wide portion 58A. Surface 3 of both-end claw 60
The projection length from 4A is the same as that of the photographic film 1 as described later.
When the center claw 58 is engaged with the hooking hole 102 of 00, the leading end position has a length protruding from the rear end of the photographic film 100. Further, the center claw 58 has a length such that the tip of the claw portion 58B further protrudes from the both-end claws 60. Therefore, the photographic film 100
However, even if it is a so-called curl film that is curled so that the emulsion surface side is concave, the both end nails 60 have the photographic film 10.
Before contacting 0, the tip of the claw 58B is photographic film 1
00 is easily engaged with the hooking hole 102.

Further, as shown in FIG. 4, the wall thickness of the attach plate 34 is about 0.7 mm in the part without the claws, and 0.5 mm in the parts of the center claw 58 and the both-end claws 60.
It is said that. In this case, the center claw 58 and the both-end claw 6
The outer surface side of 0 is partly scraped off. Therefore, in this embodiment, as will be described later, the photographic film 1
00, the attach plate 34 rotates toward the cartridge 20 with the center claw 58 engaged with the hook hole 102, and the tip of the attach plate 34 rotates in the slit 66 of the spool 64, which will be described later.
Even when the tolerance and displacement of the device and the cartridge are taken into consideration when inserted into the inside, as shown in an enlarged view in FIG. The engagement between 80 and the photographic film 100 is not disturbed.

As described above, the attaching plate 34 has only the tip portion thin and the remaining portion thick, so that the photographic film 100 is formed due to the nip pressure between the conveying roller 46 and the nip roller 48. Even if the back tension T (see FIG. 16) acts through the shaft, it is difficult to cause deformation and largely deviate from the original trajectory.

The inventors of the present invention have a total thickness of 0.5 mm, a total thickness of 0.7 mm, and a tip of 0.5 mm and a remaining portion of 0.7 mm as in the present embodiment. Back tension T of a certain size on three types of attachment plates
The thickness of each and the amount of deformation δ (see FIG. 16)
After confirming by experiment what kind of relationship there is,
It became like this.

That is, the deformation amount of the whole wall thickness of 0.7 mm was about 1/2 of that of the whole wall thickness of 0.5 mm. Further, the tip has a thickness of 0.5 mm and the thickness of the remaining portion is 0.
The thickness of 7 mm was only about 1/10 larger than the thickness of 0.7 mm in the deformation amount δ.

Further, in this case, as shown in FIG. 6, only the part of the claw portion 58B of the center claw 58 of the attach plate 34 is cut off so that the inner surface side thereof is partially cut off instead of the outer surface side. For example, use photographic film 100 with nail part 5.
When engaged with 8A, the amount of photographic film 100 hanging down from the center claw 58 is reduced, and the locking of the photographic film 100 to the spool 64 is further improved.

The surface of the attach plate 34 is polished so that the surface roughness is about 7 s.
Therefore, in this embodiment, as will be described later, the photographic film 100 is inserted into the spool 64 of the cartridge 20 by the attachment plate 34, and the photographic film 100 is locked to the locking claw 80 (see FIG. 10) of the spool 64. Let
Center claw 5 when pulling out only the attachment plate 34
Since the frictional force between the edge portion of 8 and the photographic film 100 is reduced, only the attach plate 34 can be smoothly pulled out.

A door driver 62 is held on the side wall 36 that holds the spool driver 40A on the driving side, and can reciprocate in parallel with the spool driver 40A. The role of the door driver 62 will be described later.

In the main body of the cartridge 20, FIG.
As shown in FIG. 9, a spool 64 is rotatably provided, and the photographic film 100 is provided on the outer peripheral surface of the spool 64.
A slit 66 for inserting is formed. Further, the slit-shaped film passage 22 described above is formed in the main body of the cartridge 20.
A lid member 70 is rotatably provided between the film container 68 and the film accommodating portion 68 in the main body of the cartridge 20. The lid member 70 closes or opens the film passage 22 depending on the rotational position. An axial hole having a predetermined depth (not shown) is formed at one end of the lid member 70 in the axial direction.
Is formed, and this hole is exposed to the outside through the door hole 26 on the side surface of the cartridge 20 shown in FIG. Therefore, the film passage 22 can be closed or opened by fitting the front end of the door driver 62 into the hole through the door hole 26 and rotating the base end portion of the door driver 62 in a predetermined direction. You can do it. 7 to 9 show a state in which the lid member 70 is operated and the film passage 22 is opened.

The spool 64 is provided with flanges 72 and 74, as shown in FIG.
0 is wound around the shaft portion 76. Both ends of the spool 64 are exposed to the side surface of the main body of the cartridge 20, and the exposed portion is provided with a key 78. This key 7
8 is used to engage the spool drive member, for example, the tip of the spool driver 40A shown in FIG. 1 when rotating the spool 64.

A slit 66 is formed in the shaft portion 76,
A pair of locking claws 80 and a pressing rib 82 are provided inside the slit 66, and the pressing rib 82 projects between the locking claws 80 and is divided into two by an insertion groove 84 for the center claw 58.

On the other hand, a pair of locking holes 104 are formed at both ends in the width direction of the rear end of the photographic film 100, and a hook hole 102 is formed at the center of these locking holes 104. Therefore, as will be described later, the photographic film 1 with the hook hole 102 hooked on the center claw 58 is used.
00 is inserted into the slit 66 of the spool 64 through the film passage 22 together with the tip of the attachment plate 34, the locking hole 104 is engaged with the locking claw 80, and after the engagement, the pressing rib 82 is used to press the photographic film. Since the rear end of 100 is pressed so as not to float, the locking state of the locking claw 80 and the locking hole 104 is maintained, and the photographic film 100 is pulled out from the slit 66 when the attach plate 34 is pulled out. Even if a force is applied to the photographic film 100, the photographic film 100 will not easily come off. In this case, since the surface of the attach plate 34 is polished as described above, the friction between the photographic film 100 and the attach plate 34 is small, and the photographic film 1
00 and the attachment plate 34 are more difficult to come off.

Next, the first book constructed as described above
The overall operation of the winding device 10 of the embodiment will be described. As a premise, it is assumed that the cartridge 20 is set in the setting section 12 and positioned as described above. Further, the film passage 22 of the cartridge 20 is assumed to be open (see FIGS. 7 to 9).

In this state, when the motor 50 is driven by the control means (not shown), the transport roller 46 is driven through the belt mechanism 52, and the transport roller 46 and the nip roller 48 secure the photographic film 100 to the fixed guide 4.
It is nipped and conveyed along 2A and 42B. In this way, the rear end of the photographic film 100 is fixed to the fixed guides 42A, 4A.
When it reaches the position near the end of 2B of the cartridge 20, the edge sensor 90 (see FIG. 2) causes the photographic film 100 to move.
Edges are detected. The control means (not shown) immediately stops the motor 50 by the output from the edge sensor 90. As a result, the photographic film 100 stops at the predetermined stop position. In this case, instead of detecting the edge, the locking hole 104 may be detected. As the sensor for detecting the locking hole, the same transmissive optical sensor or reflective optical sensor as described above can be used.

Next, in the control means (not shown), the motor 5
The drive of 0 is restarted and the drive of the motor 32 is started in synchronization with this. As a result, the attachment plate 34 is moved to the cartridge 2 in synchronization with the transport speed of the photographic film 100.
Start rotation in the 0 direction.

Then, the control means (not shown) starts measuring the torque of the motor 32 after a lapse of a predetermined time from the start of driving and monitors the motor torque. Here, to monitor the motor torque, after the center claw 58 of the attach plate 34 is engaged with the hook hole 102 of the photographic film 100, the nip pressure between the transport roller 46 and the nip roller 48 causes the motor torque to pass through the photographic film 100. This is because the back tension is applied to the attach plate 34 and the motor torque increases to exceed the predetermined threshold value, and when the threshold value is exceeded, it can be determined that the engagement between the center claw 58 and the hook hole 102 is completed. The reason why the measurement of the torque of the motor 32 is started after the lapse of a predetermined time is to prevent erroneous detection due to the drive torque rapidly increasing due to the inrush current immediately after the motor is driven. Of course, the same determination can be performed by measuring the motor current, the motor rotation speed, etc. instead of measuring the motor torque.

When the attach plate 34 rotates to a predetermined position, the tip of the center claw 58 reaches the film position, and the center claw 58 engages with the hook hole 102. 2 and 7 show a state in which the center claw 58 is engaged with the hook hole 102. In this case, in the present embodiment, since the claw portion 58B of the center claw 58 has a length further protruding than the both-end claws 60, the center claw 58 easily engages with the hooking hole 102, and the engagement between the both is possible. Simultaneously or after some delay, the both-end claws 60 come into contact with the photographic film 100. Therefore, in the case of a so-called curl film, the curl portions at both ends in the film width direction are lifted by the both-end claws 60 to correct the curl.

The control means confirms that the center claw 58 is engaged with the hook hole 102 as described above, and continues to drive the motor 50 and the motor 32. As a result, FIG.
From the above state, the attach plate 34 rotates counterclockwise in synchronization with the conveyance of the photographic film 100, and the photographic film 100 together with the attach plate 34 in the cartridge 20 passes through the film passage 22 as shown in FIG. Inserted in.

Further, when the attach plate 34 rotates counterclockwise in synchronism with the transportation of the photographic film 100, the photographic film 100 is placed in the slit 66 of the spool 64 together with the attach plate 34 as shown in FIG. Is inserted.

When this insertion is completed, the control means stops the rotation of the motors 50 and 32. Accordingly, as described above, the locking hole 104 is engaged with the locking claw 80, and after the locking, the locking claw 80 and the locking hole 10 are engaged by the action of the pressing rib 82.
The locked state with 4 is maintained. In this state, when the motor 32 is rotationally driven in the opposite direction to the front by the control means (not shown), only the attach plate 34 is attached to the cartridge 2
It is pulled out from 0 and returns to the initial state.

After that, the spool driver 40A is rotationally driven in a predetermined direction by the control means, the spool 64 is rotated, and the photographic film 100 is wound into the cartridge 20.

As described above, according to this embodiment,
Even with a so-called curl film having a concave emulsion surface side, the center claw 58 of the attach plate 34 can easily catch the hook hole 102, and after the hook is completed, the both-end claws 60 are turned to the photographic film 100.
Since the curl portions at both ends can be lifted to correct the curl and bring it closer to a flat surface, the success rate of film hooking is improved, and the photographic film 100 is locked through the film passage 22 of the cartridge 20. It can be easily introduced into the slit 66 of the spool 64.

Further, the photographic film 10 is provided in the slit 66.
When 0 is introduced, the thickness of the tip of the attach plate 34 is reduced, so that the attach plate 34 can be used even in consideration of tolerances and positional deviations between the device and the cartridge.
The locking claw 80 in the slit 66 is not hidden by the wall thickness of the photographic film 100 and the locking claw 80 is not prevented from engaging with the locking hole 104 of the photographic film 100. The locking property with is improved.

Furthermore, since the above-mentioned determination of hooking is made by monitoring the torque of the motor 32 and the like, it is possible to detect the hooking inexpensively and clearly.

In the above embodiment, the case where the attach plate 34 is screwed to the side surface of the rotating arm 30 is illustrated, but, for example, as shown in FIG. When the introducing member 110 integrally molded with the plate portion 110B is used, a stepped shaft 112 as shown in FIG.
The plate-shaped portion 112A of the shaft 112 is connected to the rotating arm portion 110A.
The mounting portion 11 having a circular cross section through the narrow opening 114 of
6 inside, and after insertion, insert the small diameter part 112B into the large diameter part 112C.
The shaft 112 is axially moved to the front side for positioning until the side surface of the shaft contacts the side surface of the rotating arm 110A, and as shown in FIG. And may be fixed. Alternatively, as shown in FIG. 12, the introduction member 11
The mounting part of 0 is divided into two parts, and the shaft 28 is vertically divided into two parts.
You may pinch with a component and fix with the screw 118. Further, as shown in FIG. 13 (A), the shaft 28 and the introducing member 110 are fixed with a set screw or the like, and
With a structure that can be divided (for example, a screw structure),
When replacing the introducing member 110, loosen the set screw or the like to replace the shaft 28 and the introducing member 11 as shown in FIG.
The engagement state with 0 may be released, the joint portion of the shaft 28 may be released, the shaft 28 may be displaced, and the introduction member 110 may be removed as indicated by arrow D.

In any case, if the introducing member 110 has a replaceable structure, it is convenient because if the introducing member is damaged, it can be dealt with without disassembling the side plate, the bearing and the like.

[0050]

As described above, according to the introducing member of the first aspect, since the center claw easily engages with the hook hole of the photographic film, the photographic film is forcibly curled in the opposite direction. No means for giving is required. In addition, even if the photographic film has a tight curl, it is possible to correct the curl by lifting both ends of the photographic film where the both ends of the photographic film have curled at approximately the same time or with some delay when the center nail engages with the hook hole. The trailing edge of the film can smoothly pass through the film passage of the cartridge and the slit of the spool. Therefore, there is an unprecedented excellent effect that the photographic film can be locked and smoothly introduced into the slit of the spool without giving the curl in the opposite direction.

According to the introducing member of the photographic film of the second aspect, it is difficult for the introducing member to be deformed by back tension and largely deviate from the original trajectory, and the tolerance of the apparatus and the cartridge, the positional deviation and the like are taken into consideration. Even in the case, the engagement member does not interfere with the engagement of the photographic film due to the wall thickness of the introducing member, so that the engagement failure between the photographic film and the spool can be effectively reduced. There is.

[Brief description of drawings]

FIG. 1 is a schematic perspective view showing a configuration of a photographic film winding device configured to include an introducing member according to an embodiment.

FIG. 2 is a conceptual diagram schematically showing a configuration of an attach plate drive unit and a transport unit of the apparatus shown in FIG.

FIG. 3 is an enlarged plan view showing a tip portion of an attach plate.

FIG. 4 is a diagram for explaining a change in wall thickness of an attach plate.

FIG. 5 is a schematic partial cross-sectional view showing a positional relationship between an attach plate inserted in a slit of a spool and a film.

FIG. 6 is a perspective view showing the shape of the tip of the attach plate when the inner surface side of the claw portion of the center claw is partially removed.

FIG. 7 is a view for explaining the operation of the apparatus of FIG. 1, showing the state at the moment when the film is hooked on the attach plate.

8 is a diagram showing a state in which the attach plate is further rotated in the cartridge direction from the state of FIG.

9 is a view showing a state in which the attach plate further rotates in the cartridge direction from the state of FIG. 8 and the attach plate is inserted into the slit of the spool.

FIG. 10 is a schematic perspective view showing a spool together with an attach plate and a photographic film.

FIG. 11 is a view showing a modified example, (A) is a schematic perspective view showing an introducing member together with a shaft to which the introducing member is attached;
(B) is a cross-sectional view showing the introduction member together with a mounting screw.

FIG. 12 is a sectional view showing another modification.

13A and 13B are views showing another modification, wherein FIG. 13A is a side view showing a state where the introducing member is fixed to the shaft with a set screw, and FIG. 13B shows a state in which the introducing member is removed from the shaft. It is a side view.

14A and 14B are views for explaining a problem to be solved by the invention, in which FIG. 14A is a plan view showing a front end of a conventional attach plate, and FIG. 14B is a plan view showing a rear end portion of a photographic film. , (C) are diagrams showing a state in which the rear end of the curled photographic film is hung down.

FIG. 15 is a view for explaining the problem to be solved by the invention, and is a plan view showing an attach plate having protrusions provided at both ends in the width direction.

FIG. 16 is a diagram for explaining a problem to be solved by the invention and is a side view showing a state in which the attach plate is deformed by back tension.

FIG. 17 is a diagram for explaining a problem to be solved by the invention, and is a schematic cross-sectional view showing a state in which a locking claw is hidden by an attach plate inserted in a slit of a spool.

[Explanation of symbols]

 20 Cartridge 34 Attach Plate (Introduction Member) 58 Center Claw 60 Both Ends Claw 64 Spool 66 Slit 100 Photographic Film 102 Hook Hole

Claims (2)

[Claims] 1. A center claw is provided at the center of the leading end in the width direction, and the center claw is rotated about the tangential direction of the film transport path so that the center claw engages with a catch hole in the center of the rear end of the photographic film in the width direction. Is a member for introducing a photographic film into the slit of the spool inside the cartridge by locking the photographic film with the center claw engaged with the hook hole on both sides in the width direction of the center claw. Introducing member for photographic film, characterized in that both end claws are provided, each of which has a front end position projecting from a rear end of the photographic film in a stopped state, and the center claw further projects from the both end claws. . 2. A center claw is provided at the center of the front end in the width direction, and the center claw is rotated about the tangential direction of the film transport path so that the center claw engages with a catch hole in the center of the rear end of the photographic film in the width direction. Is a member for introducing a photographic film into the slit of the spool inside the cartridge by locking the photographic film with a locking claw in the slit only in the thickness of the tip portion inserted into the slit of the spool. A member for introducing a photographic film, which is thin enough not to interfere with engagement with the photographic film.