JPH0216356Y2 - - Google Patents

Description

[Detailed description of the invention] (Industrial application field) The present invention is a long-form photosensitive material that can be used for long-length photographic materials, such as a developing process for a long photographic material and a drying process for a long photographic light-sensitive material after the development process. The present invention relates to a conveying device for long photographic materials that is incorporated into a processing machine for photographic materials.

(Prior Art) This kind of conventional conveying device for long photosensitive materials incorporates this kind of conveying device.
As in the generally well-known automatic developing machines for long photographic materials, there are many machines in which the long photographic material is held and conveyed only by rollers.

(Problems to be solved by the invention) As mentioned above, in order to convey a long photosensitive material by holding it only with rollers, a large number of rollers are required, which increases the weight of the rack equipped with rollers and increases the cost. In addition, in order to prevent the elongated photographic material from protruding from the rack during conveyance, a protrusion prevention guide is required, which poses a problem in that the arrangement of the protrusion prevention guide and rollers becomes complicated.

(Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention is designed to convey a long photographic material by sandwiching it between an endless belt and rollers. On the inside of the endless belt, which spans the upper and lower drive rollers, which are installed between the upper and lower parts of both side plates facing each other with an interval wider than the width of the photosensitive material, there is a vertical belt on both sides of the plate. chevron-shaped protrusions are formed at intervals in the direction perpendicular to the running direction of the endless belt and allow the inner side of the endless belt to slide into contact; A tension guide is provided with a Y-shaped guide piece that guides both edges of the endless belt by the inner surface thereof and guides the elongated photosensitive material by the front and rear concave arc-shaped edges. Further, drive side rollers are placed on the both side plates close to one inclined surface of each of the chevron-shaped protrusions located forward when viewed from the traveling direction of the endless belt, and the portions of the rollers facing the endless belt are placed close to the slope of each of the chevron-shaped protrusions. Each of the projecting stripes is installed so as to extend inward from the apex thereof, and furthermore, an endless turn is provided between the both side plates so that the endless belt goes around the lower drive roller so that the long photosensitive material is guided along the endless belt. This device is characterized in that a belt is arranged to serve as a conveying device for photographic material.

(Function) The conveying device for a long photographic material according to the present invention has the following features:
With the above-described structure, the endless belt is brought into pressure contact with the driving side rollers by the chevron-shaped protrusions of the tension guide, so that the clamping pressure against the photographic material increases and the photographic material is conveyed. As the force to convey the photographic material increases, and the photographic material is bent by the chevron-shaped protrusions, the elongated photographic material is reliably transported without protruding laterally. It is.

(Example) Hereinafter, the conveyance device for a long photosensitive material according to the present invention was easily installed and used in an automatic developing machine that performs printing exposure, that is, developing processing on photographic paper printed by a printer. Embodiments of the present invention will be described with reference to drawings showing only the main components of the embodiments.

In FIG. 1, 10 is a printer, and 1
00 is a long photographic paper printed by the printer 10 (hereinafter, this may be simply referred to as "photographic paper"), and 20 is a curl removal device for removing curls from the photographic paper 100. 30 is an automatic developing machine connected to the printer 10, and 4
0, . . . are long photographic paper transport devices easily assembled, and the racks 40, . . . are the respective processing tanks 31, . It is installed on...

By the way, as shown in FIG. 2, the curl removing device 20 has an endless round belt 21 (a flat belt may also be used) that is stretched around pulleys 24, 25, and 26 arranged at the vertices of a triangle. , a pulley 27 and a pulley 28 which are arranged between a pulley 24 and a pulley 25, and which are arranged so that the endless round belt 21 can be bent inward of the triangle by an endless flat belt 22 (a round belt may also be used), which will be described later. , a reverse winding roller 23 disposed between the pulleys 28 and 27, an endless flat belt 22 stretched around a pulley 29 disposed below the pulley 25, and the endless flat belt 22 is connected to the endless round belt 21 and the reverse winding roller 23, respectively. and a photographic paper guide 101 having photographic paper peeling tips 102, 103 facing away from the pulley 2.
4 and 27 and pulleys 25 and 28, the photographic paper 100 is sandwiched and conveyed by the endless round belt 21 and the endless flat belt 22, which overlap each other.
0 along with the endless flat belt 22 and the reverse winding roller 2
3 is designed to remove curling of the photographic paper 100 when it is rotated.

Next, as shown in FIGS. 3 and 4, the long photographic paper conveying device assembled as the rack 40 consists of two main parts, two side plates 50, 50 and an endless belt 6.
0,60,60 and tension guide 70,70,
70, drive side rollers 80, 80..., and an endless turn belt 90 as main components. These components will be explained in detail below.

The both side plates 50, 50 are used for transporting the photographic paper 10.
They face each other at an interval wider than the width of the photographic paper corresponding to the number of columns 0 (Figure 3 shows the case of 3 columns), and are assembled by connecting rods 51, 51, etc., and are not shown. However, the side plates 50, 50 have drive rollers that drive the endless belts 60, 60, 60, and drive side rollers 80, 80, . . .
..., and bearing holes for mounting drive rollers and the like for driving the endless turn belt 90 are formed. Only the bearing holes 52, 52 that support an upper driving roller 61, which will be described later, that drives the endless belt 60 are formed as vertical holes.

The endless belts 60, 60, 60 have both side plates 5
It spans over an upper drive roller 61 and a lower drive roller 62 installed at the upper and lower parts of the rollers 0 and 50, and both ends of the roller shaft 63 of the upper drive roller 61 are movably supported by the vertical holes 52 and 52. At the same time, both ends of the roller shaft 63 are attached to both side plates 5.
Tension is applied to the endless belts 60, 60, 60 by urging them upwardly by springs 64, 64 attached to the ends.

The tension guides 70, 70, 70 are arranged on both sides of a hollow disc body disposed inside each endless belt 60, 60, 60 at intervals in the longitudinal direction in the running direction of each endless belt 60, 60, 60. Each endless belt 60, 60,
The chevron protrusions 71, 71, which bring the inside of 60 into sliding contact
. . . and on both side edges of the upper part of each disc body 70, facing inner surfaces 74, 74 guide both side edges of each endless belt 60, 60, 60, and front and rear concave arc-shaped edges 75 are formed. , 75, 76, 76, the Y-shaped guide piece 7 guides the long photographic paper 100.
3, 73, and the tension guides 70, 70, 70 are connected to the connecting rod 5.
1,51.

The drive side rollers 80, 80... (hereinafter, particularly see FIG. 4) are the endless belts 60,...
One inclined surface 72, 72, . . . of each chevron-shaped protrusion 71, 71, .
..., and the rollers 80, 8
The portions facing the endless belts 60, 60, 60 of 0, .
It has been erected in

The turn endless belt 90 is stretched over drive rollers 91, 92, 93 installed on the side plates 50, 50 at a position below the lower drive roller 62 and at left and right positions above the roller 62. The turn endless belt 90 guides the long photographic paper 100, . It's summery. Reference numerals 81 and 82 are carry-in drive rollers that carry the photographic paper 100 into the rack 40 along the concave arc-shaped edges 75 and 75 on the front side of the Y-shaped guide pieces 73 and 73 of the tension guide 70, .
3 and 84, the photographic paper 100 is placed along the concave arched edges 76 and 76 on the rear side of the Y-shaped guide pieces 73 and 73.
The carry-out drive rollers 81 and 82 and the carry-out drive rollers 8
3 and 84 are both installed on the side plates 50 and 50. Although not shown, an input shaft is attached to the outside of the upper part of one side plate 50, and is connected to an upper drive roller 61, a lower drive roller 62, drive side rollers 80, 80, etc. by a sprocket, a chain, a gear, etc. ..., carry-in drive rollers 81, 82, carry-out drive rollers 83, 84, drive rollers 91, 92, 93, etc. are forcibly driven. In addition, the curl removal device 20
Reverse winding roller 23 and pulleys 24, 2
5, 26, 27, 28, and 29 are also forcibly driven by appropriate interlocking mechanisms.

The operation of the automatic developing machine configured as above will be explained.

First, the long photographic paper 100 printed by the printer 10 is wound in the opposite direction to the state before printing when it goes around the reverse winding roller 23 together with the endless round belt 21 and the endless flat belt 22 in the curl removing device 20. This eliminates curling.
The long photographic paper 100 from which curls have been removed is moved along the concave arc-shaped edges 75, 75 on the front side of the Y-shaped guide pieces 73, 73 of the tension guide 70 by the carry-in drive rollers 81, 82. After that, the photographic paper 100 is conveyed to the endless belt 60, the side rollers 80, 80, . . . and the turn endless belt 9 in the middle.
0 and is conveyed by the unloading drive roller 83,
It is removed from the rack 40 at step 84. As described above, when the long photographic paper 100 is conveyed, the endless belt 60 is pressed against the driving side rollers 80, 80, . . . by the chevron-shaped protrusions 71, 71, . As a result, the clamping pressure on the long photographic paper 100 increases, the force to convey the long photographic paper 100, that is, the conveying force against the long photographic paper 100 increases, and The photographic paper 100 has the chevron protrusions 71,
71, . . ., the long photographic paper 100 is reliably conveyed without protruding laterally. In addition, it is also possible to remove curls from the long photographic paper 100 before transporting the long photographic paper 100 into the rack 40. 60, the leading edge of the photographic paper 100 is smoothly fed between the drive side roller 80 and the endless belt 60. This also prevents the emulsion surface of the photographic paper 100 from turning over due to contact.

(Effects of the invention) As is clear from the above explanation, the present invention is such that a long photosensitive material is conveyed by being sandwiched between an endless belt and a driving side roller, and the endless belt is further conveyed by holding it between an endless belt and a driving side roller. By pressing the photosensitive material into contact with the drive side rollers by the chevron-shaped protrusions of the photosensitive guide, and increasing the conveying force of the photographic material, and by bending the photographic material by the chevron-shaped protrusions, the elongated photosensitive material is Since it is designed to prevent the material from protruding in the lateral direction, compared to the conventional method in which a long photosensitive material is held between rollers only and a guide is used to prevent the material from protruding, the present invention allows the rollers to As the number of rollers is reduced and guides to prevent protrusion are no longer required, the structure is simplified, ease of assembly is improved, and racks equipped with rollers can be made lighter and cheaper. This effect was achieved.

[Brief explanation of drawings]

FIG. 1 is a schematic side view of a long photographic material processing machine using a rack constructed according to the present invention;
Fig. 2 is a longitudinal side view of a device for removing curls from long photosensitive materials, Fig. 3 is a partially cutaway front view of a rack implementing the present invention, and Fig. 4 is taken along line A-B in Fig. 3. FIG. 10: printer, 20: curl removal device, 3
0: Automatic developing machine, 40: Rack, 50: Side plate, 6
0: Endless belt, 61: Upper drive roller, 6
2: lower drive roller, 70: tension guide, 71: chevron protrusion, 72: inclined surface, 73: Y-shaped guide piece, 74: inner surface, 75, 76: concave arc-shaped edge, 80: drive side roller, 90 : Endless turn belt.

Claims (1)

[Scope of utility model registration request] On the inside of the endless belt, which is stretched between an upper drive roller and a lower drive roller, which are installed between the upper and lower parts of both side plates facing each other with an interval wider than the width of the long photosensitive material, A chevron-shaped protrusion is formed on both surfaces at intervals in the longitudinal direction in a direction perpendicular to the running direction of the endless belt, and allows the inner side of the endless belt to slide into contact, and on both sides of the upper part of the disc body. Y is configured to guide both side edges of the endless belt by the facing inner surfaces, and guide the long photographic material by the front and rear concave arc-shaped edges.
A tension guide having a letter-shaped guide piece attached thereto is disposed, and driving side rollers are disposed on the both side plates close to one inclined surface of each of the chevron-shaped protrusions located forward when viewed from the traveling direction of the endless belt. , the portions of the rollers facing the endless belt are installed inside the apexes of each of the chevron-shaped protrusions, and a long photographic photosensitive strip is installed between the both side plates at the location where the endless belt goes around the lower drive roller. A conveying device for a long photosensitive material, characterized in that a turn endless belt is arranged so as to guide the material along the endless belt.