JP3722267B2 - Photosensitive material storage magazine in photographic processor - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
In the present invention, a photosensitive material support part that rotatably supports a photosensitive material wound in a roll shape around a roll axis is provided in a magazine body, and the photosensitive material supported by the photosensitive material support part can be sandwiched and conveyed. The present invention relates to a photosensitive material storage magazine in a photographic processing machine in which a roller and a pressure roller are provided in the magazine body so that the photosensitive material can be fed and unwound.
[0002]
In the photographic processor, when the operation is stopped for a long time, the photosensitive material is rewound into the magazine main body, so that the pressure sensitive marks such as the pressure roller in the photographic processing machine main body remain on the photosensitive material. .
[0003]
[Prior art]
When a photosensitive material is mounted on an empty photosensitive material storage magazine (hereinafter abbreviated as “magazine”) that has been removed from the photographic processing machine body, the operator opens the split magazine body on the work table, and the photosensitive material support section The photosensitive material in the form of a roll is supported, and the leading end side of the photosensitive material is sandwiched between the drive roller and the pressure roller so that the photosensitive material can be fed out.
[0004]
As described above, when the photosensitive material is mounted on the magazine, the leading end side of the photosensitive material is held between the driving roller and the pressure roller of the magazine. If the holding force is weak, the magazine is removed from the photo processor. When transported to the main unit side or attached to the magazine stand of the photographic processing machine main body, the roll-shaped photosensitive material is rewound and rotated by an impact or the like, and the pressure roller is rotated, and the photosensitive material is rewound accordingly. Since the front end side of the photosensitive material is detached from the driving roller and the pressure roller, the photosensitive material must be remounted so as to be sandwiched between the two rollers.
[0005]
Therefore, conventionally, a load is applied to the pressure roller as a means for preventing the photosensitive material from coming off from the drive roller and the pressure roller as described above.
[0006]
[Problems to be solved by the invention]
According to the conventional configuration described above, since a load is applied to the pressure roller, a large force is required to pull out and rewind the photosensitive material by the driving roller, and the driving unit (for example, an electric motor) of the driving roller has a large output. It was a thing.
[0007]
The present invention has been made in view of the above circumstances, and an object of the present invention is to enable a drive unit of a drive roller for pulling out and rewinding a photosensitive material to have a smaller output than conventional ones.
[0008]
[Means for Solving the Problems]
The structure, operation, and effect of the invention according to claim 1 are as follows.
[0009]
[Constitution]
In the photosensitive material storage magazine in the photographic processor described at the beginning, in a state where the driving roller and the pressure roller are pressure-bonded, a rotation prevention state in which the pressure roller is prevented from rotating in the rewind direction of the photosensitive material, and The magazine main body is provided with a switching mechanism that can be switched to a rotation permissible state that permits the rotation, and the switching mechanism is switched to the rotation permissible state when it is mounted on the photographic processing machine main body.
[0010]
[Action]
When the magazine loaded with the roll-shaped photosensitive material is transported to the photographic processor main body side or attached to the photographic processor main body, the switching mechanism is switched to the rotation prevention state side.
[0011]
As a result, even if the magazine transported to the photographic processor main body is subjected to an impact, the roll-shaped photosensitive material in the magazine can be prevented from being rewound, and the leading end side of the photosensitive material is connected to the driving roller and the pressure roller. Can be prevented from coming off.
[0012]
After the magazine loaded with the photosensitive material is attached to the photographic processing machine main body, the switching mechanism is switched to the rotation permission state side so that the photosensitive material can be rewound.
[0013]
As a result, when the operation of the photographic processor is stopped for a long time, the photosensitive material is rewound into the magazine main body, and it is possible to avoid leaving a pressure-sensitive adhesive mark such as a pressure roller in the photographic processing machine main body on the photosensitive material. it can.
[0014]
According to the first aspect of the present invention, since the switching mechanism is provided, it is not necessary to apply a load to the pressure-bonding roller. Compared to the conventional technique for pulling out and rewinding the photosensitive material under a load, the driving roller The pull-out and rewinding force due to can be small. In addition, since the switching mechanism is switched to the rotation allowable state side when mounted on the photo processor main body side, it is not necessary for the operator to switch the switching mechanism to the rotation allowable state side after mounting on the photo processor main body side. Forgetting the switching operation can be avoided.
[0015]
[effect]
Therefore, the driving of the drive roller for returning the drawer and winding the photosensitive material with kills with having a small output than conventional, it was possible to reduce the labor of the operator.
[0016]
The structure, operation, and effect of the invention according to claim 2 are as follows.
[0022]
[Constitution]
In the configuration of the invention according to the claim 1, wherein the switching mechanism, are configured by providing the ratchet mechanism cooperating with said pressure roller.
[0023]
[Action]
In addition to the effects similar to the effects of the configuration of the first aspect , the following effects can be achieved.
[0024]
Since the switching mechanism is provided with a ratchet mechanism linked to the pressure roller, the pressure roller can be rotated in the feeding direction of the photosensitive material in the rotation prevention state, and as a result, removed from the main body of the photographic processor. When mounting photosensitive material in an empty magazine, open the magazine body with a split structure, etc., and support the photosensitive material in the form of a roll on the photosensitive material support, and after closing the magazine body, It can be made to enter between both rollers while being sandwiched between the drive roller and the pressure roller.
[0025]
Further, it is possible to avoid an increase in the number of parts of the structure of the switching mechanism.
[0026]
[effect]
Therefore, in addition to the effects similar to the effects of the configuration of the first aspect, the workability of the mounting work of the roll-shaped photosensitive material can be improved, and the structure of the switching mechanism can be simplified. I was able to.
[0027]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0028]
FIG. 1 shows a printing processing unit 1 of a photographic processing machine for printing a digital image on photographic paper 2 (corresponding to a photosensitive material).
[0029]
The printing processing unit 1 has a magazine base 3 provided on the machine body frame 4, and rotates a pair of photographic papers 2 wound around a pipe-shaped core member 24 (see FIG. 3) around the roll axis O separately. The first magazine 5 and the second magazine 6 that are freely supported are juxtaposed in the horizontal direction on the magazine base 3, and a conveying means 8 for conveying the photographic paper 2 is provided, and the photographic paper 2 is fed out from the first magazine 5. The first magazine 5 and the image forming section 7 for printing the photographic paper 2 from the second magazine 6 are arranged below the first magazine 5. It is configured.
[0030]
Next, the first magazine 5 will be described (the second magazine 6 has the same structure as the first magazine 5).
[0031]
The first magazine 5 is provided with a photographic paper support portion 9 (corresponding to a photosensitive material support portion, see FIG. 3) in the magazine body 17 and can drive and hold the photographic paper 2 supported by the photographic paper support portion 9. 10 and the pressure roller 11 are provided on the photographic paper discharge port 12 side of the magazine main body 17 so that the photographic paper 2 can be fed out and rewound.
[0032]
The photographic paper support portion 9 includes a rotation support shaft 25 that is inserted through the pipe-shaped core member 24 and a bearing portion 26 that rotatably supports the rotation support shaft 25 around the shaft core.
[0033]
As shown in FIG. 2, a magazine main body 17 is provided with a switching mechanism 13 that can be switched between a rotation preventing state for preventing the pressure roller 11 from rotating in the rewinding direction of the photographic paper 2 and a rotation allowing state for allowing the rotation. Is provided.
[0034]
The switching mechanism 13 will be described. The first main gear 14 is provided on the rotation shaft of the pressure roller 11, and the rotation shaft including the claw wheel 16 and the second gear 15 that meshes with the first gear 14 is supported by the magazine body 17. A balance swinging arm 19 having a claw 18 meshing with the claw wheel 16 at one end is supported by the magazine body 17 and a spring 20 for swinging and biasing the balance swinging arm 19 so that the claw 18 meshes with the claw wheel 16. Is provided.
[0035]
A ratchet mechanism 21 is configured by the claw wheel 16, the balance swinging arm 19 including the claw 18, and the spring 20. That is, the switching mechanism 13 is provided with a ratchet mechanism 21 linked to the pressure roller 11.
[0036]
The movable member 22 that can press the other end of the balance swinging arm 19 against the urging force of the spring 20 so that the engagement between the claw 18 and the claw wheel 16 is released is provided at the bottom of the magazine body 17. It is slidably provided on the side.
[0037]
The movable member 22 is biased by a spring material 23 in a direction opposite to the direction in which the pressing force is applied to the balance swinging arm 19, and when the first magazine 5 is removed from the magazine base 3 of the photographic processing machine main body. The claw 18 and the claw wheel 16 in the ratchet mechanism 21 are engaged with each other so that the rotation is prevented.
[0038]
When the first magazine 5 is attached to the magazine base 3 of the main body of the photo processor, the movable member 22 is pressed against the cam surface (not shown) on the magazine base 3 side. The end side is pressed against the urging force of the spring 20 to swing the balance swinging arm 19 to release the engagement between the claw 18 and the claw wheel 16 in the ratchet mechanism 21.
[0039]
That is, in a state where the first magazine 5 is attached to the magazine base 3 of the main body of the photo processor, the switching mechanism 13 is in the rotation-permitted state, so that the photographic paper 2 can be rewound.
[0040]
[Another embodiment]
The switching mechanism 13 may be configured by linking the pressure roller 11 and a mechanism other than the ratchet mechanism 21.
[0041]
The photosensitive material 2 may be other than the photographic paper 2.
[Brief description of the drawings]
FIG. 1 is a schematic side view of a photographic processing machine. FIG. 2 is a schematic view showing a switching mechanism. FIG. 3 is a diagram showing a photosensitive material support in a magazine.
2 Photosensitive material 9 Photosensitive material support portion 10 Driving roller 11 Crimping roller 13 Switching mechanism 17 Magazine body 21 Lattiet mechanism O Roll shaft core

Claims (2)

A photosensitive material support part that rotatably supports a photosensitive material wound in a roll shape around a roll axis is provided in the magazine body, and a driving roller and a pressure roller that can sandwich and convey the photosensitive material supported by the photosensitive material support part Is provided in the magazine body, and is a photosensitive material storage magazine in a photographic processing machine configured so that the photosensitive material can be fed and unwound.
A switching mechanism capable of switching between a rotation preventing state in which the pressure roller is prevented from rotating in the rewind direction of the photosensitive material and a rotation permission state in which the driving roller and the pressure roller are pressure-bonded. set in the magazine body,
A photosensitive material storage magazine in a photographic processor configured so that the switching mechanism is switched to the rotation-permitted state side when mounted on a photographic processor main body . 2. The photosensitive material storage magazine in a photographic processor according to claim 1, wherein the switching mechanism includes a ratchet mechanism linked to the pressure roller.

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