JPH04213457A - Photosensitive material drier - Google Patents

Abstract

PURPOSE:To obtain the photosensitive material drier for uniformly blowing hot air against a photosensitive material in its cross direction without the overdried part being generated in the cross direction of the material. CONSTITUTION:Hot air is blown from a hot air feed part 114 against a film which is dried, and a hot air receiving opening 48B is formed on one end of a hot air feed chamber 116 with the cross direction of the film as its longitudinal direction. A hot air discharge port 118 is formed at the hot air discharge part 120 arranged in the longitudinal direction of the hot air feed chamber and projected from the hot air feed chamber. The width of the hot air discharge part is gradually decreased from its middle toward the wall 122 on the opening side of the hot air discharge part and closed in the vicinity of the wall. Besides, an opening 124 for communicating the hot air discharge part with the outside is formed in the wall of the hot air discharge part. Consequently, the hot air discharged from the hot air discharge part is almost uniformized in the cross direction of the film, and the almost uniform discharge area is increased.

Description

[Detailed description of the invention]

0001

[Industrial Application Field] The present invention relates to a photosensitive material drying device that blows hot air onto a photosensitive material to dry it, and the photosensitive material drying device receives hot air generated in a hot air generating section and discharges it toward the photosensitive material. Regarding.

0002

2. Description of the Related Art Conventionally, a photosensitive material drying apparatus for drying a photosensitive material such as a film by blowing hot air has been used, for example, as shown in FIG.
There is one configured as shown in 1. According to this,
A plurality of rollers 72 are arranged in a staggered manner at equal intervals inside the photosensitive material drying device 70, and these rollers 72 form a transport path for a film 74 extending in the vertical direction. A plurality of hot air supply units 76 are arranged near the roller 72 with a film 74 in between. Hot air supply section 76
are the hot air supply chamber 76A and the film 7 of the hot air supply chamber 76A.
A hot air discharge part 80 formed to protrude toward the conveyance path side of No. 4 and a hot air discharge port 78 formed on the conveyance path side of the hot air discharge part 80.
It is made up of.

[0003] The warm air supply chamber 76 of these hot air supply units 76
Warm air generated by a warm air generation section including a fan and a heater (not shown) is sent to A. This warm air is sent into the hot air supply chamber 76A from the opening 76B of the hot air supply chamber 76A, is discharged from the hot air discharge port 78 via the hot air discharge section 80, and is blown onto the surface of the film 74, thereby forming a film. 74 is being dried. .

In general, in a photosensitive material drying apparatus that blows hot air onto the film 74 to dry it, if the drying time is shortened and the drying temperature is increased, problems such as curling of the film 74 may occur. be. For this reason, a large amount of hot air may be blown onto the film 74 to dry it. In this method, the hot air generated in the hot air generation section is of course efficiently sent to the hot air supply chamber, but the hot air supply chamber and the hot air discharge section also have a structure that reduces the flow resistance of the hot air. It becomes.

In order to reduce the flow resistance of hot air in the photosensitive material drying device 70, as shown in FIG. A curved surface 82 that is gently curved in an arc shape toward the hot air discharge section 80 is formed, and the warm air supply chamber 76A
It has a structure that reduces the flow resistance of hot air from the hot air discharge part 80 to the hot air discharge part 80. In addition, the hot air discharge port 7 shown in FIG.
The directions of the many arrows pointing from 8 to the film 74 indicate the direction in which hot air is discharged, and the length of the arrow represents the amount of hot air discharged per unit time. Further, FIG. 10E shows the wind speed of the warm air discharged from the hot air discharge port 78.

[0006]

[Problem to be solved by the invention] However, FIG.
In the hot air supply chamber 76A and hot air discharge section 80 configured as shown in FIG. There may be a portion of the film 74 that becomes excessively dry near the curved surface 82 of the hot air outlet 78 . This over-dried area may appear as reflection unevenness on the surface of the finished film 74. Further, if the film 74 is transported and dried while avoiding areas where a large amount of hot air is discharged, the apparatus becomes large and the drying efficiency with respect to the amount of hot air generated becomes poor.

In consideration of the above facts, the present invention is capable of efficiently discharging the generated hot air toward the photosensitive material and uniformly blowing the hot air along the width direction of the photosensitive material, thereby making it possible to blow the hot air evenly along the width direction of the photosensitive material. It is an object of the present invention to provide a photosensitive material drying device that does not cause overdrying.

[0008]

[Means for Solving the Problems] A photosensitive material drying apparatus according to claim 1 of the present invention is a photosensitive material drying apparatus that blows warm air onto the surface of a photosensitive material conveyed along a conveyance path to dry it. an opening that communicates with the hot air generating section and receives hot air from the hot air generating section; a hot air outlet that discharges the warm air toward the photosensitive material; and a hot air outlet that receives the hot air from the opening. a direction changing unit that discharges hot air toward a conveyance path of the photosensitive material and along the width direction of the photosensitive material; a hot air adjusting unit that makes the discharge amount of hot air substantially uniform along the width direction of the photosensitive material; It is characterized by having the following.

A photosensitive material drying apparatus according to a second aspect of the present invention is the photosensitive material drying apparatus according to the first aspect, in which the hot air adjusting means is a first air conditioner disposed on the photosensitive material side of the opening. a second wall surface disposed from the first wall surface toward the photosensitive material, and a bent portion joining the second wall surface to the first wall surface, the bent portion The end of the second wall surface on the side of the photosensitive material is disposed outside a line connecting the end of the photosensitive material and the end of the photosensitive material near the second wall surface.

A photosensitive material drying apparatus according to a third aspect of the present invention is the photosensitive material drying apparatus according to the first aspect, in which the hot air adjusting means is arranged in a first part disposed on the photosensitive material side of the opening. a wall surface; a second wall surface having one end adjacent to the first wall surface and the other end facing the photosensitive material; and a second wall surface protruding from the first wall surface along the hot air outlet. The invention is characterized by having a wind shield plate.

A photosensitive material drying apparatus according to a fourth aspect of the present invention is the photosensitive material drying apparatus according to the first aspect, in which the hot air adjusting means is arranged along the conveying direction of the photosensitive material at the hot air outlet. The width of the opening is reduced from the middle part in the width direction of the photosensitive material toward the end on the opening side, and the vicinity of the end on the opening side is closed.

A photosensitive material drying apparatus according to a fifth aspect of the present invention is the photosensitive material drying apparatus according to the first aspect, wherein the hot air adjusting means is provided to close a part of the opening. The present invention is characterized in that it is a shielding plate that forms a space in which the flow of hot air supplied from the hot air generator is blocked.

[0013]

[Function] In the photosensitive material drying apparatus according to claim 1 of the present invention having the above-mentioned configuration, the hot air generated and sent in by the hot air generating section is received from the opening of the hot air supply section, and furthermore, the hot air is sent to the direction changing section. The discharge direction is changed and discharged along the width direction of the photosensitive material. This sequentially dries the photosensitive material transported along the transport path in the width direction.

[0014] Conventionally, the hot air adjusting means can adjust the hot air in a portion where a larger amount of hot air is discharged from the hot air outlet than in other portions. In this hot air supply section, when changing the direction of the hot air, the hot air adjusting means constitutes a flow path resistance of the hot air, and the amount of hot air discharged from the vicinity of the second wall is approximately equal to that of other parts. The hot air discharged from the hot air discharge port toward the photosensitive material is discharged substantially uniformly along the width direction of the photosensitive material.

[0015] As a result, the photosensitive material is dried substantially uniformly by the hot air discharged from the hot air discharge port.

In the photosensitive material drying apparatus according to claim 2 of the present invention, the hot air regulating means is connected to the first wall surface provided in the opening and the second wall surface joined to the first wall surface by the bent portion. It is composed of: This bent portion is provided so as to form a vortex of warm air near the second wall surface. This reduces the amount of hot air discharged from the vicinity of the second wall,
The amount of hot air discharged from the hot air discharge port can be made substantially uniform along the width direction of the photosensitive material.

In the photosensitive material drying apparatus according to claim 3 of the present invention, the hot air adjusting means is arranged between the first wall surface, the second wall surface, the bent portion connecting the first wall surface and the second wall surface, and the second wall surface. A wind shielding plate is provided that projects from the first wall and reduces hot air flowing into the vicinity of the second wall along the bent portion.

[0018] The amount of hot air flowing into the vicinity of the second wall is reduced by this wind shield, and a vortex is generated in the vicinity of the second wall. Therefore, the amount of hot air discharged from the vicinity of the second wall surface is reduced. As a result, the hot air discharged from the hot air outlet toward the photosensitive material is
It is discharged substantially uniformly along the width direction of the photosensitive material.

According to the photosensitive material drying apparatus according to the fourth aspect of the present invention, the hot air discharge port on the opening side where a large amount of hot air is supplied is narrowed. When the hot air outlet is gradually narrowed toward the bent part on the opening side and closed, a vortex of hot air is generated on the upstream side of the hot air outlet in the hot air discharge direction on the opening side. The discharge amount is reduced. As a result, the hot air discharged from the hot air discharge port is discharged substantially uniformly along the width direction of the photosensitive material.

According to the photosensitive material drying apparatus according to claim 5 of the present invention, the hot air generated in the hot air generating section is supplied from the opening, and a shielding plate is provided at this opening. ing. As a result, the hot air supplied from the opening forms a vortex on the downstream side of the shielding plate, and the speed of the hot air passing near the shielding plate is reduced. As a result, the speed of the hot air supplied from the opening is not uniform, and the speed on the photosensitive material side of the opening becomes high, and furthermore, the direction is changed to the discharge direction at the direction changing section, which increases the width of the photosensitive material. The liquid will be ejected substantially uniformly along the direction.

As described above, in the photosensitive material drying apparatus according to the present invention, an extremely large amount of hot air is not discharged from one end of the hot air outlet along the width direction of the photosensitive material, and the hot air is not discharged onto the surface of the photosensitive material. Warm air can be blown almost uniformly, and the photosensitive material is dried by this warm air. Since there is no part where the amount of hot air discharged from the hot air outlet is extremely large, the hot air generated in the hot air generating section can be efficiently blown onto the photosensitive material, and the hot air can be blown in the width direction of the photosensitive material. The photosensitive material can be dried without causing an over-dry portion at one end of the photosensitive material.

[0022]

Embodiment Embodiment 1 of the present invention will be described with reference to the drawings. In Example 1, an example will be described in which a photosensitive material drying apparatus according to the present invention is applied to an automatic processor 10, which is an apparatus for processing photosensitive materials such as photographic films.

FIG. 2 shows a schematic structure of the automatic processor 10. Machine body 10A of automatic developing machine 10 from loading port 12
The film 14 (for example, a photosensitive material such as an X-ray film or a printing film) that is transported inside is guided by a guide roller 16, passes through a developing tank 18, a fixing tank 20, and a washing tank 22.
It is designed to reach a drying section 34. A plurality of guide rollers 26 are provided in the developing tank 18, the fixing tank 20, and the washing tank 22.
A rack 28 constituted by
4 is immersed from the liquid level to the bottom of each tank by these racks 28, turned over, and guided to the liquid level again.

Further, guide rollers 30 are provided between the developing tank 18 and the fixing tank 20, and between the fixing tank 20 and the washing tank 22, so that the film 14 is guided to the sequentially connected tanks. , development, fixing, and washing are performed. Further, a plurality of roller pairs 32 are arranged between the washing tank 22 and the drying section 34, and the washed film 14 is conveyed by these roller pairs 32 from the conveying port 36 to the drying section 34. It is guided to the drying section main body 34A. Note that some of the moisture attached to the film 14 is squeezed by these roller pairs 32.

As shown in FIG. 2, inside the drying section main body 34A, a plurality of rollers 42 rotatably supported by the drying section main body 34A are arranged in a staggered manner.
2 forms a conveyance path for the film 14. Further, these rollers 42 are arranged at equal intervals along the conveyance path. These rollers 42 are rotated by a driving force transmitted from a driving means (not shown), and transport the film 14 fed into the drying section main body 34A along the transport path downstream (downward in FIG. 2).

Two guide rollers 44 having the same diameter as the roller 42 and a guide roller 46 having a larger diameter than the roller 42 are arranged at the lower part of the drying section main body 34A. guide roller 44,
46 are rotatably supported by the drying section main body 34A, and the driving force of a driving means (not shown) is transmitted thereto. The film 14 guided to the lower part of the drying section main body 34A is reversed by these rollers 44 and 46, and then transferred to the transport port 3.
Film receiving box 4 attached to the outside of the fuselage 10A from 8
Exported to 0.

A hot air supply section 48 is disposed near the roller 42 inside the drying section main body 34A, with the film 14 conveyance path interposed therebetween. As shown in FIGS. 3 and 4, the hot air supply section 48 includes a hot air supply chamber 48A and a pair of hot air discharge sections 50.
and warm air discharge ports 52 formed in the pair of hot air discharge sections 50.
, 53. The longitudinal direction (L direction shown in FIG. 4) of the hot air supply chamber 48A is along the width direction of the film 14, and the longitudinal dimension of the hot air supply chamber 48A is larger than the width direction dimension of the film 14. There is. Also,
The hot air discharge ports 52 and 53 are the opening 4 of the hot air supply chamber 48A.
It is arranged so as to face the film 14 from the middle part on the 8B side to the end opposite to the opening 48B. As shown in FIG. 4, an opening 48B is provided at one end in the longitudinal direction of the warm air supply chamber 48A, and warm air generated by a fan 60 and a heater, which will be described later, is supplied from this opening 48B. It has become so.

A pair of hot air discharge portions 50 are attached to the hot air supply chamber 48A, which extend along the longitudinal direction and project toward the conveying path of the film 14. The pair of hot air discharge portions 50 are hollow inside and communicated with the inside of the hot air supply chamber 48A. As shown in Figure 3, the hot air outlet 5
2 and 53 are each provided so as to be biased toward one end in the width direction (vertical direction in FIG. 3) of the hot air discharge portion 50, and the other end in the width direction is formed in an arc shape to form an arc-shaped portion 50A, It is said to be 50B. That is, in the hot air discharge section 50 on the upstream side of the transport path of the film 14, a hot air discharge port 53 is formed on the upstream side and an arcuate portion 50B is formed on the downstream side. Downstream hot air discharge section 5
0, the hot air outlet 52 is located downstream and the arc shaped portion 5 is located upstream.
0A is formed.

Further, the total opening area of the hot air discharge ports 52 and 53 of the pair of hot air discharge portions 50 is made equal to the opening area of the opening 48B of the hot air supply chamber 48A.

Further, in the hot air supply chamber 48A, an exhaust hole 54 is formed between the pair of hot air discharge portions 50, which communicates from the conveying path side of the film 14 to the side opposite to the conveying path. Air is discharged through this discharge hole 54 in the direction of arrow C in FIG.

Furthermore, as shown in FIG.
8A gradually approaches the conveying path side of the film 14 from one end where the opening 48B is provided to the other end, and serves as a direction changing section for hot air received from the opening 48B, and also serves as a hot air discharge port 52, The amount of hot air discharged from the film 14 is made substantially uniform along the width direction of the film 14. The warm air sent in the direction of arrow D from the opening 48B is
The direction is changed in the direction of arrow E by this wall surface 90. The angle of this direction change is an angle θ1 with respect to the width direction of the film 14 when viewed from the transport direction of the film 14. Note that the direction of the many arrows directed toward the film 14 shown in FIG. 1 indicates the direction in which hot air is discharged, and the length of the arrow indicates the amount of hot air discharged per unit time.

Further, the wall surface 92 on the transport path side of the film 14 adjacent to the opening 48B of the hot air supply chamber 48A is connected to the opening 48B side of the hot air discharge section 50 via a bent portion 94 serving as a hot air adjusting means. It is joined to the wall surface 96 of. The wall surface 96 of the hot air discharge section 50 is arranged at an angle θ2 with respect to the width direction of the film 14. This angle θ2 is approximately a right angle, and is larger than the angle θ1 at which hot air is discharged. These wall surfaces 92 and 96 and the bent portion 94 make the amount of hot air discharged from the hot air discharge ports 52 and 53 substantially uniform.

On the other hand, as shown in FIG.
An exhaust port 56 is provided at the bottom of A, and one end of a return duct 58 is attached to the exhaust port 56. The other end of the return duct 58 is connected to the intake side of the fan 60. Furthermore, an intake duct 62 that communicates with the aircraft body 10A is connected to the intermediate portion of the return duct 58.

Furthermore, the drying section main body 34A is provided with an exhaust duct 61 for discharging high-humidity air after the film 14 in the drying section main body 34A has been dried. The hot air blown onto the film 14 through the hot air discharge ports 52 and 53 is made into an airflow toward the lower part of the drying section main body 34A, and a portion is discharged from the exhaust duct 61 to the outside of the body 10A. Further, a part of the airflow directed toward the lower part of the drying section main body 34A is guided to the intake side of the fan 60 together with the air outside the body 10A taken in from the intake duct 62 via the exhaust port 56 and the return duct 58.

Here, the air guided to the intake side of the fan 60 is determined by the cross-sectional area of the return duct 58 and the intake duct 6.
According to the ratio of the flow path cross-sectional area of 2, the proportion of air flowing in from the drying section main body 34A is 80%, and the proportion of air flowing in from outside the body 10A is 20%.

As shown in FIG. 5, on the exhaust side of the fan 60 is a heater box 64 in which a heater (not shown) is arranged.
One end of the is attached. The heater box 64 is bent at a right angle at the center, and a duct 66 is connected to the other end. The side surface of the duct 66 is attached to the side surface of the drying section main body 34A, and the opening 48B of the hot air supply chamber 48A
An opening (not shown) that communicates with is provided. fan 6
The air flow generated at 0 is converted into warm air by a heater (not shown) and is sent to the hot air supply chamber 4 from the opening 48B via the duct 66.
8A.

Further, as shown in FIG. 5, the cross-sectional area of the duct 66 is gradually reduced from the heater box 64 to the opposite side along the film transport direction, so that each hot air supply chamber is The flow rate of hot air supplied to 48A per unit time is approximately uniform.

In the first embodiment, the hot air generated by the fan 60 and the heater box 64 and sent into the duct 66 is 10.8 m3/min, and this hot air is evenly supplied to the hot air supply chamber 48A. The hot air supplied to each hot air supply chamber 48A is 1.35 m3/min.

Next, the operation of the first embodiment will be explained. In the automatic developing machine 10 shown in FIG.
After the film 14 inserted from 2 is developed, fixed, and washed with water, it is squeezed by a pair of rollers 32, and then sent to the drying section main body 34A of the drying section 34 through the conveying port 36.

[0040] Inside the drying section main body 34A, the roller 42
The film 14 is conveyed downward, and hot air discharged from the hot air discharge ports 52 and 53 of the hot air discharge section 50 is blown onto the film 14 to dry it.

After drying the film 14, the highly humid air passes from the surface of the film 14 through the exhaust hole 54 of the hot air supply section 48 or between the adjacent hot air supply sections 48, and is directed against the film 14. It is discharged to the side. Further, the film 14 that has been dried in the drying section main body 34A is reversed by guide rollers 44 and 46, and then passed through the conveyance port 38 to the machine body 1.
The film is transported to the film receiving box 40 outside 0A.

The drying process inside the main body 34A of the drying section is carried out by transporting the film 14 downward by the roller 42 and blowing hot air discharged from the hot air discharge ports 52 and 53 of the hot air discharge section 50 onto the film 14. dry. At this time, the hot air discharged from the hot air discharge port 52 is distributed along the conveyance path of the film 14 as viewed from the width direction of the film 14 by the biased hot air discharge ports 52 and 53 and the arcuate portions 50A and 50B. The liquid is discharged along arrows A and B in FIG.

[0043] Also, when viewed from the conveying direction of the film 14,
In the width direction of the film 14, warm air is discharged from the hot air discharge ports 52 and 53 along the width direction of the film 14 in the direction of the arrow E in FIG. 1 almost uniformly. That is, a portion of the warm air passing near the wall surface 96 due to the bent portion 94 generates a vortex near the wall surface 96, so that the amount of hot air discharged from the vicinity of the wall surface 96 decreases, and the hot air discharged from the vicinity of the wall surface 96 decreases. The amount of hot air discharged from the other portions is approximately equal to the amount of hot air discharged from the other portions, and the amount of hot air discharged from the hot air discharge ports 52 and 53 is
It becomes substantially uniform along the width direction of 4.

In other words, conventionally, the bent portion 94 was gently curved into an arc shape, and the hot air flowed along the curve, so that a larger amount of hot air was discharged than in the portion away from the wall surface 96.
The bending of the bent portion 94 is made extremely small, and the angle θ2 at which the wall surface 92 of the hot air supply chamber 48A and the wall surface 96 of the hot air discharge portion 50 are bent is made larger than the angle θ1 at which the hot air is discharged. As a result, the bent portion 94 generates a vortex of warm air near the wall surface 96, and the wall surface 96 of the hot air discharge ports 52, 53
Warm air can be discharged almost evenly from the vicinity to the other end.

As described above, in the photosensitive material drying apparatus according to the first embodiment, the wall surface 92 of the hot air supply chamber 48A and the hot air discharge section 50
By forming the bent portion 94 with a small bending radius between the hot air outlet 52 and the wall surface 96, hot air can be discharged substantially uniformly from the vicinity of the wall surface 96 side of the hot air discharge ports 52 and 53 to the other end.

The angle θ1, which is the direction of the hot air discharged from the hot air discharge ports 52 and 53, corresponds to the wall surface 90 of the hot air supply chamber 48A.
, the length and direction of the hot air outlets 52 and 53, and the opening 48B.
Determined by the direction of the hot air supplied from. Also,
The amount of hot air discharged from the vicinity of the wall surface 96 by the bent portion 94 of the hot air discharge portion 50 is determined by the size (curvature radius) of the bent portion 94 and the angle θ2 of the wall surface 96 with respect to the width direction of the film 14.

That is, in the first embodiment, the wall surface 92 and the wall surface 96
Although the angle θ2 between the wall surface 9 and the
2 and the wall surface 96 is the angle θ1 of the hot air discharge direction.
It may be made larger so that the end of the wall surface 96 on the side of the film 14 is located outside a line connecting the bent portion 94 and the end of the wall surface 96 of the film 14.

[0048] In the first embodiment, the hot air discharge ports 52, 53
The hot air discharged from the roller 42 is directed to the vicinity of the upstream side and the vicinity of the downstream side of the contact portion between the roller 42 and the film 14; A sprayer may be placed near the downstream side or upstream side of the contact portion.

Further, in the first embodiment, the hot air discharge ports 52, 5
Although the direction of the hot air discharged from the hot air outlet 3 is the direction of arrow E in FIG. 1, the direction is not limited to this. It may be provided with a deflection plate that discharges the liquid in the direction of 14.

Next, another embodiment of the present invention will be described. In these Examples, the automatic developing machine 1 used in Example 1
0 is used, and the above-mentioned Example 1 is used for basically the same parts.
The same reference numerals are given and the explanation thereof is omitted.

FIG. 6 shows a hot air supply unit 10 according to the second embodiment.
0 is shown. This hot air supply section 100
In the hot air supply chamber 102, a pair of hot air discharge portions 50 in which hot air discharge ports 52 and 53 are formed are arranged. In this hot air supply chamber 102, a wind shield plate 106 is provided along the longitudinal direction of the hot air supply chamber 102 from a wall surface 104, which is a first wall surface, on the side opposite to the opening 48B. This wind shield 1
06 is a rectangular flat plate that is long on one side, and is cut into a trapezoid shape with the lower base at one end in the longitudinal direction, the length of the upper base being the same as the length R of the lower base, the length of the lower base being S, and the height T. A notch 108 is formed with a top portion 108A at a portion that coincides with the bottom. Further, the length U of the wind shielding plate 106 in the width direction is equal to or slightly larger than the opening width in the conveying direction of the film 14 between the hot air supply chamber 102 and the hot air discharge section 50.

A screw hole 110 is bored in the wind shielding plate 106 in a portion where the notch 108 is not formed. In addition, a through hole 1 is provided in the wall surface 104 of the hot air supply chamber 102.
12 is formed, and a screw (not shown) inserted into the through hole 112 is screwed into the screw hole 110 to fix the wind shield plate 106 to the hot air supply chamber 102. As a result, the shielding plate 1
The top portion 108A of 06 is located near the bend 94.

As an example, the inventor proposed that the wind shielding plate 106 has a length V in the longitudinal direction of 60 mm and a length U in the width direction of 15 mm, the length R of the upper base is 3 mm, the length S of the lower base is 13 mm, It is cut into a trapezoid shape with a height T of 30 mm.

FIG. 10B shows velocity changes along the longitudinal direction of the hot air discharge ports 52 and 53 of the hot air discharged from the hot air supply chamber 102 according to the second embodiment. Furthermore, Figure 10B
, the horizontal axis represents the distance from the wall surface 96 side end, and the vertical axis represents the hot air discharge speed. In addition, the vertical axis shows negative values at the top and positive values at the bottom, as shown in Figure 10.
As shown in B, near the wall surface 104, the value is negative, that is, the air is sucked into the hot air supply chamber 102 from the hot air discharge ports 52 and 53, but in other parts, the hot air is sucked in at a substantially uniform speed. is being discharged. In this hot air supply chamber 102, a part of the warm air passing near the wall surface 96 is blocked by the wind shielding plate 106, and the hot air discharge ports 52, 53 of the wind shielding plate 106
There is a vortex on the side. This vortex weakens the discharge speed of the hot air discharged from the vicinity of the wall surface 96 of the hot air discharge section 50,
In the conventional drying device, as shown in FIG. 10E, there is a portion near the wall surface 96 where the hot air is discharged at a high speed. The speed is substantially uniform from the vicinity of the wall surface 96 to the other end.

In the second embodiment, the trapezoidal notch 108 is formed in the wind shielding plate 106, but the invention is not limited to this. Any shape that narrows the opening of the air discharge section 50 on the warm air supply chamber 102 side can be applied. Furthermore, wall surface 9
Any shape that can generate a vortex in the vicinity of 6 is applicable.

FIG. 7 shows a hot air supply section 114 according to a third embodiment of the present invention. The hot air supply chamber 116 of the hot air supply unit 114 has a wall 1 facing toward the hot air outlet 118.
A pair of warm air discharge portions 120 are provided, each of which has a gradually narrower diameter. Moreover, the width of the hot air outlet 118 is gradually narrowed from the middle part in the longitudinal direction to the wall surface 122 side within a distance M from the wall surface 122, and is closed near the wall surface 122.

The hot air outlet 118 is oriented in a direction perpendicular to the conveyance path of the film 14 when viewed from the width direction of the film 14, and is configured to blow the hot air discharged onto the surface of the film 14. It is said that Furthermore, an opening 124 that communicates with the outside of the hot air discharge section 122 is formed in the wall surface 122 of the hot air discharge section 120 .

As an example, the inventor has determined that the length M of the hot air outlet 118 is 80 mm, and the opening width N of the hot air outlet 118 is 80 mm.
is carried out at 2.5 mm. As a result, the speed change of the hot air discharged from the hot air supply unit 114 toward the film 14 has the result shown in FIG. 10C.

In this way, the hot air discharged from the hot air supply unit 114 toward the surface of the film 14
It can be made substantially uniform along the width direction. Further, in the hot air supply section 114 , when discharging hot air from the hot air discharge port 118 , air is sucked in from the opening 124 in the wall surface 122 of the hot air discharge section 120 . As a result, the hot air outlet 1
In the vicinity of the wall surface 122 of 18, the range in which surrounding air is sucked from the hot air outlet 118 becomes narrower, and as shown in FIG. It can be done.

In the third embodiment, the hot air discharge portion 120 does not have an arcuate portion; however, similar to the first and second embodiments, the arcuate portions 50A and 50B are formed to allow hot air to be discharged from the hot air discharge port 118. The heated air may be directed towards the upstream side or downstream side of the transport path when viewed from the width direction of the film 14 and blown onto the film 14.

FIG. 8 shows a hot air supply section 48 according to a fourth embodiment of the present invention. A shielding plate 126 is provided in the hot air supply section 48 at the opening 48B of the hot air supply chamber 48A. The shielding plate 126 is attached so as to close a part of the opening 48B from the side of the duct 66 opposite to the wall surface 92. Furthermore, as shown in FIG.
26 is arranged so as to continuously close the openings 48B of the plurality of hot air supply sections 48 arranged along the transport path of the film 14.

The inventor proposed that the height H is 46 cm as shown in FIG.
．． 5mm, width G is 51mm, width F is 1
A shielding plate 126 of 7.5 mm is provided. As a result, the speed of the hot air discharged from the hot air discharge ports 52 and 53 of the hot air supply chamber 48A obtained the experimental results shown in FIG. 10D.

In the fourth embodiment, the warm air supplied from the opening 48B through the duct 66 generates a vortex of hot air on the downstream side of the shielding plate 126. As a result, the shielding plate 12
The speed of the hot air passing near the shield plate 126 is set lower than the speed of the hot air passing near the shield plate 126, that is, the film 14 side. As a result, the direction of the hot air changed and discharged from the hot air discharge ports 52 and 53 decreases in the amount discharged from the vicinity of the wall surface 96, and is discharged substantially uniformly along the width direction of the film 14.

[0064] The hot air discharge section 5 according to Examples 1, 2, and 4
0, the hot air discharge part 12 of Example 3 is installed on the wall surfaces 96, 104 of
An opening similar to the opening 124 in the wall surface 122 of 0 may be provided. As a result, the amount of air sucked into the hot air supply chambers 48A, 102 from the vicinity of the wall surface 96 of the hot air outlets 52, 53 can be reduced.
It becomes possible to widen the range in which the discharge speed of hot air from No. 3 is substantially uniform.

[0065] Also, the fan 60 and the heater box 64
In Examples 2, 3, and 4, the hot air generated by
3/min, and this hot air is supplied to the hot air supply chamber 48A.
are evenly distributed.

[0066]

As explained above, in the photosensitive material drying apparatus according to the present invention, when hot air is discharged from the hot air outlet toward the photosensitive material, by providing a hot air adjusting means, the temperature of the photosensitive material from the hot air outlet is reduced. Warm air can be discharged substantially uniformly along the width direction of the material.

In a second aspect of the present invention, the hot air adjusting means is formed by a first wall surface, a second wall surface, and a bent portion joining the first wall surface and the second wall surface.

According to a third aspect of the present invention, the hot air regulating means is formed by a wind shielding plate projecting from the first wall surface.

According to a fourth aspect of the present invention, the hot air adjusting means is formed by closing the hot air outlet while gradually narrowing the opening width between the middle part and the end of the second wall surface.

In a fifth aspect of the present invention, the hot air regulating means is formed by a shielding plate provided at a portion of the opening opposite to the hot air outlet.

These hot air adjusting means can make the hot air discharged from the hot air outlet substantially uniform along the width direction of the photosensitive material. As a result, the photosensitive material drying apparatus according to the present invention has an excellent effect of uniformly drying the photosensitive material without producing an over-dried portion at one end in the width direction of the photosensitive material.

[Brief explanation of the drawing]

FIG. 1 is a cross-sectional view of a main part of a photosensitive material drying apparatus to which the present invention is applied, taken along line 1-1 in FIG. 3;

FIG. 2 is a schematic cross-sectional view of an automatic developing device according to an embodiment of the present invention.

FIG. 3 is a sectional view of a main part showing a drying section main body according to an embodiment of the present invention.

FIG. 4 is a perspective view of a main part showing a drying section according to Example 1.

FIG. 5 is a perspective view showing a drying section according to an embodiment of the present invention.

FIG. 6 is a perspective view of a main part showing a drying section according to Example 2.

FIG. 7 is a perspective view of a main part similar to FIG. 6 according to the third embodiment.

FIG. 8 is a perspective view of a main part similar to FIG. 6 according to the fourth embodiment.

9 is a cross-sectional view of a main part taken along line 9-9 in FIG. 5 according to Example 4. FIG.

FIG. 10A is a plan view of the main part of the drying section, and FIG.
0B to FIG. 10E are graphs showing changes in the speed of hot air discharged from the hot air discharge port according to each example, and FIG.
0B is a graph showing the second embodiment, FIG. 10C is a graph showing the third embodiment, FIG. 10D is a graph showing the fourth embodiment, and FIG. 10E is a graph showing the conventional example.

FIG. 11 is a sectional view showing a drying section main body showing a conventional example.

FIG. 12 is a sectional view of a main part similar to FIG. 1 showing a conventional example.

[Explanation of symbols]

10 automatic developing machine 12 film 34A drying section main body 48A, 102, 116 hot air supply chamber 52, 11
8 Hot air outlet 92 Wall surface (first wall surface) 94 Bent portions 96, 122 Wall surface (second wall surface) 106
Wind shielding plate 126 Shielding plate θ1, θ2 angle

Claims (5)

[Claims] 1. A photosensitive material drying device that blows hot air onto the surface of a photosensitive material conveyed along a conveyance path to dry it, the apparatus being in communication with a hot air generating section and blowing hot air from the hot air generating section. a receiving opening, a hot air discharge port for discharging the hot air toward the photosensitive material, and a hot air discharge port for discharging the warm air received from the opening toward the transport path of the photosensitive material and along the width direction of the photosensitive material. 1. A photosensitive material drying apparatus comprising: a direction changing section; and a hot air adjusting means that makes the amount of hot air discharged substantially uniform along the width direction of the photosensitive material. 2. The photosensitive material drying apparatus according to claim 1, wherein the hot air adjusting means includes a first wall surface disposed on the photosensitive material side of the opening, and a drying device for drying the photosensitive material from the first wall surface. a second wall surface disposed toward the photosensitive material; and a bent portion joining the second wall surface to the first wall surface; A photosensitive material drying apparatus characterized in that an end of the second wall surface on the photosensitive material side is disposed outside a line connecting the end. 3. The photosensitive material drying apparatus according to claim 1, wherein the hot air adjusting means has a first wall surface disposed on the photosensitive material side of the opening, and one end thereof is connected to the first wall surface. It is characterized by having a second wall surface adjacent to the photosensitive material, the other end of which is disposed facing the photosensitive material, and a wind shielding plate protruding from the first wall surface along the hot air outlet. photosensitive material drying equipment. 4. The photosensitive material drying apparatus according to claim 1, wherein the hot air adjusting means adjusts the opening width of the hot air outlet along the conveying direction of the photosensitive material to a widthwise intermediate portion of the photosensitive material. 1. A photosensitive material drying apparatus, characterized in that the width is reduced toward the end on the opening side, and the vicinity of the end on the opening side is closed. 5. The photosensitive material drying apparatus according to claim 1, wherein the hot air adjusting means is provided to close a part of the opening, and the hot air regulating means is provided to close a part of the opening, and the hot air regulating means is arranged to close a part of the opening. 1. A photosensitive material drying apparatus, characterized in that the apparatus comprises a shielding plate that forms a space in which light is blocked.