JPH0881106A - Transport path switching mechanism - Google Patents

Abstract

(57) [Summary] [Purpose] To be able to selectively switch the transport direction of the print to the transport path leading to the discharge port or inside the concentration measurement unit. [Structure] A roller 184 presses a pressing surface 170 to rotate the holder 160 in a clockwise direction. by this,
The connecting portion between the link member 152 and the projecting portion 154 is pushed downward, and the upright surface 133B of the guide plate 136 is moved to the conveying roller 1.
The printing paper P is positioned on the right side of the sandwiching surface of 32 and is guided to the carry-out rollers 140, 142 side. When the measurement of the density of the photographic printing paper P is unnecessary, when the pressing of the pressing surface 170 is stopped, the connecting portion between the link member 152 and the overhanging portion 154 is lifted by the urging force of the torsion spring 166,
The curved surface 136A is located on the left side of the nipping surface of the conveying roller 132, and the print is sent to the carry-out roller 138.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a transport path switching mechanism provided in a printer processor.

[0002]

2. Description of the Related Art A printer processor is provided with a densitometer for measuring the density of a print processed in a processing tank in order to maintain and manage print conditions. Usually, this densitometer is arranged near the discharge port through which the print, which has been dried, is discharged.

By the way, the applicant of the present invention has proposed a density measuring unit having a density measuring function and a carrying function, and attaches this density measuring unit to a printer processor separately.

In such a type, a conveyance path leading to a discharge port through which prints are discharged by a series of processing steps,
It becomes necessary to provide a mechanism in the printer processor that can selectively switch to the transport path leading to the density measuring unit.

[0005]

SUMMARY OF THE INVENTION In consideration of the above facts, an object of the present invention is to make it possible to selectively switch the print conveying direction when the density measuring unit is set.

[0006]

A transport path switching mechanism according to a first aspect of the present invention is provided in a printer processor.
In a transport path switching mechanism for selectively switching and transporting prints to the discharge port or the second discharge port, the print path is swingably provided in the transport route of the prints and abuts against the prints to contact the first discharge port or the first discharge port. 2 It is characterized by having guide means for guiding the print in the direction of the discharge port and swing means for swinging the guide means.

The transport path switching mechanism according to claim 2 is
The rocking member is rotatably supported and converts a pressing force from above into a rotating force about a fulcrum, and a rotating force arranged at the fulcrum of the rocking member and pushed up to the rocking member. And a link member that connects the guide unit and the swing member to convert the rotational force of the swing member into the swing force of the guide unit.

A transport path switching mechanism according to a third aspect of the present invention is
A density measuring unit mounted so as to be able to swivel and retract from a carrying section that constitutes a drying processing carrying section of the printer processor; and a density measuring unit that is provided in the density measuring unit and receives a print carried out from the second discharge port. And a pressing means capable of pressing the swinging member in a state in which the swinging member is set to be possible.

[0009]

In the transport path switching mechanism according to the present invention, the guide means is swingably supported in the print transport path, and is swingable by the swing means.
By swinging the guide means, it is possible to selectively switch the print to the first discharge port or the second discharge port provided in the printer processor and convey the print.

In the transport path switching mechanism according to the second aspect, the swing member is swingably supported by the side plate provided in the printer processor. When this rocking member is pressed from above, the pressing force is converted into a rotational force centered on the fulcrum. A biasing means is arranged at this fulcrum, and imparts a rotational force in a pushing-up direction to the swing member.

Therefore, when the swing member is pressed or released, the guide means connected via the link member swings, and the print conveying path is switched to the first discharge port or the second discharge port. To be

In the transport path switching mechanism according to the third aspect, the concentration measuring unit is provided so as to be able to swivel and retract from the transport unit that constitutes the dry processing transport unit of the printer processor. The density measuring unit is provided with a pressing means, and the rocking member can be pressed in a state where the density measuring unit is set to accept the print carried out from the second discharge port.

Thus, the pressing means corresponds to the rocking member so that it can be pressed only when the density of the print needs to be measured. Therefore, the rocking member is operated by mistake and the print is discharged from the second discharge port. There is nothing to be done.

[0014]

FIG. 5 and FIG. 6 schematically show a printer processor 10 in which a transport path switching mechanism according to this embodiment is used. (Schematic Description of Printer Processor) The photo printing unit 12 constituting the printer unit of the printer processor 10 has a structure in which a paper magazine 14 in which photographic printing paper P is stored can be loaded. The photographic printing paper P sent out from the paper magazine 14 is cut into a desired length by the cutter 16, and then placed on the suction belt 18 and stopped to be conveyed on the optical axis S of the exposure light beam.

A large number of small holes are formed in the suction belt 18 over the whole area, and a suction force for sucking the printing paper P from the suction fan 22 is given through the small holes formed on the upper surface of the duct 20. It is supposed to be done.

The casing 10 of the printer processor 10
On the upper surface of A, a light source box 26 in which a light source 24 is arranged
Is provided. The side wall of the light source box 26 is opened, and the diffusion box 28 is inserted into this opening.
A mirror and a diffusing plate are provided in the diffusing box 28 so that the light amount of the light source 24 is large at the exit and is flat.

At the bent portion of the diffusion box 28,
The light rays of the light source whose color tone is adjusted by the three sets of CC filters 30 arranged in the light source box 26 are bent from the horizontal direction to the vertical direction.

The light beam bent in the vertical direction passes through the negative film N set on the negative carrier 32 placed on the casing 10A and becomes an exposure light beam. The exposure light beam passes through the exposure lens unit 34 and forms an image of the negative film N on the photographic printing paper P arranged in the lower area.

Here, the photographic paper P on which the black shutter 35 has been opened and the printing of the image has been completed is guided by the guide roller 3.
It is nipped between 6 and the pressing roller 38, and is conveyed through a conveying path 40 to a processing tank 42 for carrying out each processing such as development, bleach-fixing and washing.

Finally, the photographic printing paper P, which has been washed with water in the washing tank, is conveyed to the drying processing section 44 disposed above. The drying processing section 44 is composed of a heat blowing section 52 and a conveying section 54. The dried photographic printing paper P is guided by a guide plate 136 that constitutes a conveying path switching mechanism, and the discharge port 48.
It is discharged to the outside of the machine via the concentration measuring unit 50.

As shown in FIG. 4, a shaft 74 is erected from the upper plate of the heat blower 52. The shaft 74 has a cylindrical body 7 fixed to the substrate of the concentration measuring unit 50.
6 is inserted so that it can turn. A plate piece 78 projects horizontally from the lower end of the cylindrical body 76. The plate piece 78 contacts a stopper 80 protruding from the side wall of the heat blower 52, and regulates the turning range when the concentration measuring unit 50 is retracted from the transport unit 54. The concentration measuring unit 50 is set over the conveying path 54 in a state of being set over the magnets 118, 120.
It is supposed to be fixed with.

As shown in FIG. 5, a slit 60 is formed in the upper plate of the transport section 54. This slit 60
Is located at the most downstream side of the transport section 54.
The photographic printing paper P that has been dried is conveyed by 0 and 142 and is sent into the density measuring unit 50.

As shown in FIG. 2, the concentration measuring unit 50
The printing paper P sent in is sandwiched and conveyed by the roller 86 and the skewer roller 88, further sandwiched and conveyed by the roller 90 and the skewer roller 92, and discharged to the outside. A pedestal 62 is provided between the rollers 86 and 90, and a densitometer 64 is arranged so as to face the pedestal 62 so that the density of the printing paper P can be measured.

On the other hand, in the carrying section 54, a plurality of skewer rollers 114 are sequentially arranged in the carrying direction of the printing paper P. The roller surface of the skewer roller 114 projects from a long hole formed in the plate 116. Also, the plate 116 has
Ventilation holes are formed at predetermined intervals, and the hot air sent from the heat blowing part 52 to the chamber 117 provided under the plate 116 is blown up.

On the upper side so as to face the plate 116, an endless net belt 122 composed of a band-shaped net is provided.
Is provided. Both ends of the mesh belt 122 are wound around the rollers 118 and 120.
The tension is applied by the pressing roller 124 arranged corresponding to the above.

The photographic printing paper P that has been washed with water is conveyed between the mesh belt 122 and the skewer roller 114, and is sent to the conveying rollers 130 and 132 while being dried with hot air. (Conveying Path Switching Mechanism) As shown in FIGS. 1 and 2, a guide member 134 is arranged between the conveying rollers 130 and 132. The printing paper P is guided by the guide member 134 and reaches the lower end portion of the guide plate 136.

The guide roller 136 is attached to the guide roller 136.
A curved surface 136A that guides the photographic printing paper P conveyed from 2 toward the discharge roller 138, and a face 136B that guides toward the discharge rollers 140 and 142 on the side opposite to the curved surface 136A are formed.

On the other hand, as shown in FIG. 3, the upper end portion of the guide plate 136 has side plates 146 and side plates 14 of the bracket 148.
The drive shaft 150 spanned by 8A is fixed through. The end of the drive shaft 150 is rotatably connected to one end of the link member 152.

A long hole 153 is formed at the other end of the link member 152.
Is formed and is provided with projecting portions 154, 156, 158 projecting from the center in both lateral and upward directions, and is rotatably connected to a pin 157 projecting from the projecting portion 154 of the holder 160 having a substantially triangular shape as a whole. Has been done. Also, holder 1
The overhang portion 158 of the 60 is a side plate 148 of the bracket 148.
It projects from B and is pivotally supported by a pin 164. The pin 164 is provided with a torsion coil spring 166, one end of which is connected to the projecting portion 156 of the holder 160, and the other end of which is connected to the protrusion 168 provided on the side plate 148A.
This causes the holder 160 to move in the counterclockwise direction (arrow A
Direction) is applied to rotate. Holder 1
The upper end of the overhanging portion 156 of 60 is bent in the horizontal direction to form a pushing surface 170. As shown in FIG. 1, the pushing surface 170 is exposed from the opening 172 of the upper plate of the transport unit 54 and abuts against the edge of the opening 172 by the biasing force of the torsion coil spring 166 and is inclined.

The carry-out roller 142 has a shaft 142B.
A not-illustrated one-way clutch mechanism is provided so that the roller portion 142A and the roller portion 142A can rotate relative to each other. As a result, the roller 86 disposed in the density measuring unit 50
The printing paper P nipped between the skewer roller 88 and the skewer roller 88 is
It slides between 40 and 142 and depends on the conveying speed on the roller 86 side.

On the other hand, the substrate 176 of the concentration measuring unit 50
A support plate 177 having side walls 178 provided upright on both ends is attached to the. A shaft 180 spans the side wall 178. This shaft 180 has an arm 18
The center of 2 is rotatably supported. Arm 182
A roller 184 is rotatably supported at the tip of the roller 184 and can come into contact with the pushing surface 170 of the holder 160 while rotating. The solenoid 18 is provided at the rear end of the arm 182.
5 plunger 186 is rotatably connected by a pin 188. Further, the shaft 180 is provided with a torsion coil spring 190, one end of which is provided with the arm 18.
The roller 184 is urged against the lower surface of the roller 2 in the direction of lifting.

When the plunger 186 is lowered, the roller 184 of the arm 182 and the pushing surface 170 of the holder 160 are not in contact with each other by the urging force of the torsion coil spring 190, as shown in FIG. It is in. At this time, the holder 160 is inclined to the left by the urging force of the torsion coil spring 166, and the curved surface 13 of the guide plate 136.
6A corresponds to the holding surface of the roller 132.

Next, the operation of the transport path switching mechanism according to this embodiment will be described. As shown in FIG. 4, when it is not necessary to measure the density of the photographic printing paper P, the density measuring unit 50 is swung and retracted from above the transport unit 54.

At this time, since the pressing surface 170 is not pressed, the holder 160 is in a state of hitting the edge of the opening 172 formed on the upper plate of the conveying section 54 by the urging force of the torsion coil spring 166. Is held. Here, the connecting portion between the link member 152 and the protruding portion 154 of the holder 160 is
In the lifted state, the curved surface 136A of the guide plate 136 is located on the left side of the sandwiching surface of the transport roller 132.

Therefore, the photographic printing paper P nipped and conveyed by the conveyance rollers 132 is sent to the carry-out rollers 138 side and discharged outside the machine.

Next, when measuring the density of the printing paper P,
As shown by the alternate long and short dash line in FIG. 4, the concentration measuring unit 50 is swung around the shaft 74 and set so as to straddle the transport section 54. When the solenoid 185 is energized, the plunger 186 is pulled up, and the arm 182 is pulled up.
Rotates about the shaft 180, and the roller 184 provided at the tip presses the pressing surface 170, so that the holder 160
Rotate clockwise. As a result, the link material 15
The connecting portion between 2 and the overhanging portion 154 is pushed downward, and the upright surface 133B of the guide plate 136 is located on the right side of the sandwiching surface of the transport roller 132. As a result, the photographic printing paper P nipped and conveyed by the conveyance rollers 132 is conveyed to the discharge rollers 140, 1
Guided to the 42 side.

The carry-out rollers 140 and 142 sandwich and convey the photographic printing paper P and send it to a roller 86 and a skewer roller 88 arranged in the density measuring unit 50. Where the roller 86
The conveyance speed between the skewer roller 88 and
Since it is set to be faster than the transport speed of 42, the shaft 142A of the transport roller 142 and the roller portion 142B slip, and the transport speed of the printing paper P depends on the density measuring unit 50 side.

In the above embodiment, the solenoid 185 is used.
Although the holder 160 is pressed by using, it may be manually performed.

[0039]

Since the present invention has the above-described structure, it is possible to selectively switch the print carrying direction between the carrying path leading to the discharge port and the carrying path leading to the inside of the concentration measuring unit.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing a main part of a transport path switching mechanism according to this embodiment.

FIG. 2 is a cross-sectional view showing a main part of a transport path switching mechanism according to the present embodiment.

FIG. 3 is an overall perspective view of a transport path switching mechanism according to the present embodiment.

FIG. 4 is a perspective view showing a turning motion of the concentration measuring unit.

FIG. 5 is a schematic diagram showing an overall configuration of a printer processor.

FIG. 6 is an overall perspective view of a printer processor.

[Explanation of symbols]

 136 Guide plate (guide means) 152 Link material (oscillating means) 156 Holder (oscillating means) 160 Torsional coil spring (biasing means) 182 Arm (oscillating means) 185 Solenoid (pressing means)

Claims (3)

[Claims] 1. A transport path switching mechanism for selectively switching and transporting prints to a first discharge port or a second discharge port provided in a drying processing transport unit of a printer processor, wherein the print path is shaken into the print transport path. A guide unit that is movably provided to guide the print toward the first discharge port or the second discharge port by contacting the print; and a swinging unit that swings the guide unit. Transport path switching mechanism. 2. An oscillating member, which is rotatably supported and converts a pressing force from above into a rotational force about a fulcrum, and an oscillating member disposed at the fulcrum of the oscillating member to the oscillating member. And a link member that connects the guide unit and the swing member to convert the swing force of the swing member into the swing force of the guide unit. The transport path switching mechanism according to claim 1. 3. A concentration measuring unit mounted so as to be able to swivel and retract from a conveying unit that constitutes a drying treatment conveying unit of the printer processor, and a concentration measuring unit provided in the concentration measuring unit, the concentration measuring unit being carried out from the second discharge port. 3. The transport path switching mechanism according to claim 2, further comprising: a pressing unit that can press the swing member in a state in which the print is set to be accepted.