JPS6298340A - Photographic paper retaining device - Google Patents

Abstract

PURPOSE:To restart a printing operation immediately after its interruption by providing an auxiliary flap which is supported at the exit of the 1st loop part pivotally and covers the entrance for a clamping conveyor roller to a photographic paper retaining device which sends out continuous photographic paper after printing to a developing device. CONSTITUTION:The continuous photographic paper 16 is sent from a printing device 12 to a roller 20. Then, the photographic paper 16 is run between a flap 70 and the auxiliary flap 112 which is provided closely to the exit of the 1st loop part and sent to the 1st clamping conveyor roller 30. Then, the flap 70 is rotated counterclockwise (chain-line position 70) and the photographic paper is sent to the 2nd clamping conveyor roller 90 and sent out to a development part. AT this time, the photographic paper 16 is loosened as the 1st loop part between a guide 28 and the roller 30 and as the 2nd loop part between the rollers 30 and 90, and stacked. The end part of the photographic paper is prevented from entering the roller 30 by the auxiliary flap 112 even when the paper 16 is cut 24 during the interruption of printing operation. Thus, the auxiliary flap is provided pivotally, so cutters are reduced and the printing operation is restarted immediately.

Description

DETAILED DESCRIPTION OF THE INVENTION "Industrial Field of Application J, 4.' The invention relates to a photographic paper holding device for sending continuous photographic paper after printing to the next process such as a developing device.

[Background Art and π term to be solved] In an apparatus in which a developing device is disposed downstream of a printing section that exposes photographic paper from a negative film and continuously develops photographic paper after printing, the printing section In order to absorb the difference in photographic paper feeding speed between the developing device and the developing device, a photographic paper holding device is required in the intermediate portion.

In this photographic paper holding device, i! 1! The continuous photographic paper is temporarily stored in a loop to absorb the speed difference between the developing device and the developing device, which processes at a low speed.

However, with such a holding device, when the exposure work in the printing section is temporarily interrupted, the middle part of the continuous photographic paper is cut by a cutter placed between the holding device and the developing device, and then the paper is cut off by the developing device. Consideration has been taken to eliminate the need for photographic paper stops. As a result, the exposure work can be started immediately when the exposure work is started in the printing section, and the photographic paper already stored in a loop can be sequentially sent to the printing device. Furthermore, this holding device has a cutter placed between it and the printing section, and when the printing process is finished, this cutter cuts the middle part of the photographic paper, eliminating the need to develop unnecessary photographic paper and cutting off the paper after exposure. All photographic paper is designed to be developed.

Therefore, such a conventional holding device requires a cutter between the developing device and the printing section, making maintenance and management of these cutters complicated.

Furthermore, if the photographic paper is cut by the cutter between the printing section and the holding device when attempting to finish the printing process, something may occur afterwards. Even if it becomes necessary to restart the printing operation due to IS circumstances, the printing operation cannot be restarted because the printing paper cannot be sent to the holding device until all of the photographic paper accumulated in the loop section is sent to the developing section.

The present invention takes the above-mentioned facts into consideration, reduces the number of cutters required, allows printing to be performed immediately even after the printing has been stopped, and further prevents meandering of the loop portion. The object is to obtain a similar photographic paper holding device that can maintain normal feeding of photographic paper.

[Summary and operation of the invention] The photographic paper holding device according to the present invention is arranged downstream of the printing section to nip and convey the photographic paper, and also has a first
A first nipping conveyance roller forming a loop portion, and a second nipping conveyance roller disposed downstream of the first nipping conveyance roller to nip and convey the photographic paper and forming a second loop portion between the first nipping conveyance roller and the first nipping conveyance roller. a nipping conveyance roller, a first position disposed between at least the printing section and the first nipping conveyance roller;
a guide member movable to a second position disposed between the nipping conveyance roller and the second nipping conveyance roller;
and an auxiliary flap that is pivotally supported near the exit of the first loop portion between the nipping conveyance roller and covers the entrance portion of the first nipping conveyance roller when the guide member is not in the first position. .

Therefore, in the present invention, when the exposure work in the printing section is temporarily interrupted, the middle part of the photographic paper is cut with a cutter placed between the holding device and the printing section, and the developing process is carried out! ! When the exposure operation in the printing section is resumed, the guide member is moved from the second loop section to release the second loop section, and the photographic paper loop in the first loop section is moved to the second loop section. Thereafter, the guide member is moved to the first loop section to guide the leading end of the newly fed photographic paper to the first nipping conveyance roller, and then the guide member is moved from the first loop section to the first loop section. , and form a loop of photographic paper to the first loop section.

Therefore, there is no need to provide a separate cutter between the holding device and the developing device, and the conventional guide member
By making it movable between the loop portion and the second loop portion, a plurality of loop portions are formed, thereby making it possible to perform the printing process after interruption.

Further, the auxiliary flap covers the entrance portion of the first nipping and conveying roller when the guide member is not in the first position.

Normal feeding of the photographic paper can be maintained without the rear end of the photographic paper entering the first nipping and conveying roller.

[Embodiment of the Invention] FIGS. 1 and 2 show a photographic paper holding device IO according to an embodiment of the present invention. This photographic paper holding device 10 is disposed between the printing section 12 and the developing section 14, and is adapted to guide the continuous photographic paper 16 exposed in the printing section 12 to the developing section 14.

In the photographic paper holding device 10, the machine frame 18 is attached to the burn section 12.
The machine frame 18 has a delivery roller 20 disposed downstream of the printing section 12.
is pivoted. The feed roller 20 rotates under the driving force of a motor (not shown), holds the photographic paper 16 between it and a pressure roller 22 that comes into contact with the outer periphery, and sends the photographic paper 16 to the photographic paper holding device IO. .

A guide plate 23 and a cutter 24 are provided downstream of the feed roller 20 and between it and the photographic paper holding device 10, so that the intermediate portion of the photographic paper 16 can be cut when necessary.

A guide plate 28, 29 is attached to the bracket 26 which is fixed to the machine frame 18 downstream of the cutter 24, and the photographic paper 16 is sent out between the first clamping and conveying rollers 30, 32. . First nipping conveyance roller 30
has a flange 31 serving as a widthwise limiting means, and a support shaft 34 fixed integrally therewith is pivotally supported by bearing plates 38 and 40 via bearings 36 near both ends of the shaft 34, as shown in FIG. . These bearing plates 38,40 depend from the bracket 26.

A gear 42 is fixed to the tip of the support shaft 34 protruding from the bearing plate 38, and the gear 42 meshes with the gear 44. This gear 44 is fixed to an output shaft 48 of a motor 46 attached to the machine frame 18. This allows the motor 46 to transmit its rotational force to the first nipping and conveying roller 30 to rotate the first nipping and conveying roller 30 .

The first nipping and conveying roller 32 that is pressed against the first nipping and conveying roller 30 is pivotally supported by a bearing plate 50.
is guided by a bracket 52 attached to the bracket 26 and can move in the direction toward and away from the first nipping and conveying roller 30.

Further, a lower end portion of an elevating plate 54 is attached to the bearing plate 50, and a rectangular window 56 is formed at the upper end portion of the elevating plate 54, as shown in FIG. This rectangular window 5
An eccentric cam 58 is housed in the eccentric cam 6 , and an eccentric shaft 60 of the eccentric cam 58 serves as an output shaft of a motor 62 .

This motor 62 is supported by the bracket 26.

Therefore, the rotation of the motor 62 causes the lifting plate 54 to move up and down, allowing the first nipping and conveying roller 32 to approach and separate from the first nipping and conveying roller 30 .

As shown in FIG.
4, rotary plates 66 and 68 are each pivotally supported between the first nipping conveyance roller 30 and the bearing plates 38 and 40 via bearings 64, respectively. One end of a flap 70 serving as a guide member is fixed to each of these rotating plates 66 and 68.

The gear 72 formed on the outer periphery of the rotating plate 66 is
It meshes with Ilj 74. The shaft 76 of this gear 74
is pivotally supported to the machine frame 18 via a hair ring 78. A southeast 80 is fixed to the tip of the sleeve 76 protruding from the machine frame 18, and engages with the southeast 82. This gear 82 is fixed to an output shaft 85 of a motor 84, and the motor 84 is attached to the machine frame 18.

Therefore, when the motor 84 rotates, the flap 70 can rotate in response to this driving force.

As shown in FIG. 2, a restriction bin 88 protruding from the machine frame 18 is inserted into a fourth portion 86 formed in a part of the southeast 74, and is adapted to restrict the rotation angle of the flap 70. As shown in FIG. It extends to a second position where it is spanned between the transport roller 90 and the transport roller 90. Furthermore, this flap 7
The rotational position of 0 is controlled by detecting the rotational angle of a rotary plate 92 fixed to the shaft 76 with a sensor 94, as shown in FIG. An auxiliary roller 91 that is pivotally supported by the machine base 18 is arranged so as to fit into the notch at the tip of the flap 70 in the second position.

When the flap 70 is between the second position and the vertically downward position, as shown in FIG.
6A is between the first position and the position immediately below 6A, as shown in FIG.
A second loop portion 16B can be formed between the nipping conveyance roller 90 and the second loop portion 16B.

As shown in FIG. 1, the 52 nipping and conveying roller 90 is pivotally supported on the machine frame 18 via a bracket 96, and a second nipping and conveying roller 98 is in contact with this second nipping and conveying roller 90. There is. Therefore, when the leading edge of the flap 70 reaches the second position shown in the imaginary line in FIG. The film is sent to the developing section 14 through the slit 100. Therefore, the second nipping and conveying roller 90 is driven by the motor 102.
rotational force is transmitted.

Note that a guide plate 106 is arranged in the second loop portion 16B on the L side of the photographic paper 16 passing through, so that the photographic paper 16 can be smoothly guided through the second loop portion 16B.
It is adapted to be guided to nipping conveyance rollers 90 and 98.

An auxiliary flap 1 is attached to a bracket 110 fixed to the machine base 18 between the baking section 12 and the first nipping conveyance roller 30.
12 is installed. As shown in FIG. 3, the bracket 11O has an opening 114 near the first clamping and conveying roller 30 of the thin steel material, and a projecting piece 116 erected from the end of this opening 114 near the baking section 12 is attached to the machine base 18. It is intended for installation on.

Also, the first nipping conveyance roller 30'+ff of this frontage 114
Projecting pieces 118 protrude from near the ends of the flap, and projecting pieces 120 formed at both ends of the auxiliary flap 112 in the width direction are pivotally supported by a pin 122. For this reason, protrusion 1
1B and the protruding piece 120 have through holes 124 and 126, respectively.
is formed.

The tip of the auxiliary flap 112 has a semicircular guide portion 128.
This protects the photographic paper 16 passing through.

Further, protrusions 120 are provided from both sides of the central portion of the auxiliary flap 112.
A projecting piece 130 projects in the opposite direction. When the flap 70 moves to the first position, these projecting pieces 130 create a photographic paper passing space between them and the flap 70 with their tips facing toward the printing section 12 as shown in FIG. It is supposed to form. That is, the projecting piece 130 comes into contact with the vicinity of both ends of the flap 70 in the width direction to form a gap with the height of the projecting piece 130 between the flap 70 and this space as a photographic paper passage space. There is. Further, this pair of protrusions 130 are connected to the first nipping conveyance roller 3
Meandering of the photographic paper 16 is prevented in correspondence with both ends in the width direction of the photographic paper 16 that is fed to 0.32 mm.

However, when the flap 70 is rotated vertically downward from the first position, the auxiliary flap 112 is pulled down by its own hair around the bottle 122 as shown by the imaginary line in FIG. In this electrician state, the first nipping conveyance roller 3
Photographic paper 16 to 0 [is arranged to cover 1 part. That is, this auxiliary flap 112 is connected to the first nipping conveyance roller 30.
The insertion portion of the photographic paper 16 is covered by approximately 174 arcs from the contact portion of the first nipping and conveying roller 30, and the rigidity of the photographic paper 16 is increased at the moment the rear end of the photographic paper sent from the printing section 12 leaves the guide plate 28. This eliminates the problem of the paper being caught in the first nipping and conveying rollers 30 and 32. In this case, the 0-character plate 134 attached by the auxiliary flap 112 and the snake 132 prevents the rear end of the photographic paper from coming into contact with the guide portion 128 and the like.

In addition, when the auxiliary flap 112 covers the photographic paper entrance to the nipping and conveying roller 30, the pair of protrusions 1
Reference numeral 30 is provided with a projecting piece 12 on the Yumata auxiliary flap 112 which is moved outward in the axial direction of the first nipping and transporting roller 30 to more reliably cover the artificial part of the first nipping and transporting roller 30.
A stopper 136 protrudes near zero and corresponds to a stopper 138 attached to the protruding piece 118. These stoppers 136 and 138 limit the rotation angle of the guide portion 128 to prevent the auxiliary flap 112 from coming into contact with the first nipping and conveying roller 30, and the magnet 140 fixed to the stopper 138 attracts the stopper 136 to assist the auxiliary flap 112. The vertical position of the flap 112 is maintained with a predetermined force. However, the adsorption force of the magnet h140 is such that when the flap 70 rotates clockwise in FIG.
The strength is such that it does not prevent 12 from being rotated.

Next, the operation of this embodiment will be explained.

Prior to the printing exposure work in the printing section 12, the flap 70 is
is placed in the position shown in solid line in FIG. 1, ie, in the first position. In this case, the flap 70 is the auxiliary flap 112
is kept pushed up via the protruding piece 130 to form a photographic paper passage space between it and the auxiliary flap 112.

The leading edge of the photographic paper 16, which has been exposed to light in the printing section 12, is sent out by delivery rollers 20, 22 and reaches a guide plate 28. Further, the leading end of the photographic paper 16 passes between the flap 70 and the auxiliary flap 112 and passes through the first nipping conveyance roller 3.
It is sent between 0 and 32. In this case, the movement of the photographic paper in the width direction is restricted by the protrusion 71 of the flap 70 and the guide protrusion 130 formed on the auxiliary flap 112.
In addition, since movement in the width direction is also restricted by the flange 31 of the first nipping and conveying roller 30, the sheet is accurately held between the first nipping and conveying rollers 30 and 32 without any center deviation.

When the sensors 144 and 146 detect the leading edge of the photographic paper 16, the rotation of the motor 46 is stopped and the movement of the leading edge of the photographic paper 16 is stopped.

Here, the flap 70 rotates counterclockwise in FIG.
It is moved to the second position as shown in FIG. 1B and becomes a vertical position as shown by the imaginary line in FIG. However, since the intermediate portion of the photographic paper 16 exposed at high speed is sent out from the developing section 14, a first loop section 16A is formed between the guide plate 28 and the first nipping conveyance roller 30.

At the same time, the leading end of the photographic paper 16 that is sent out moves on the flap 70 and is sent out between the second nipping and conveying rollers 90 and 98. As the motor 102 rotates, the leading edge of the photographic paper 16 is sent out from between the second nipping and conveying rollers 90, 98 to the developing section 14, and a developing operation is sequentially performed.

In this state, when the leading end of the photographic paper 16 is sent out from between the second nipping and conveying rollers 90 and 98 by the drive of the motor 102, the first nipping and conveying roller 32 is raised by the rotation of the motor 62, and the first nipping and conveying roller It is separated from the roller 30, and the feeding force to the developing section 14 is performed only by the motor 102.

As described above, if the photographic paper 16 wound around the first nipping and conveying roller 30 is not subjected to the nipping force of the first nipping and conveying roller 32, the photographic paper 16 is likely to meander as it advances, but the flange 31 and these flanges The guide portion 128 of the auxiliary flap 112, which is inserted into the inside of the auxiliary flap 112, prevents this meandering.

When temporarily interrupting the printing operation in the printing section 12,
The cutter 24 cuts the middle portion of the photographic paper 16. Even during this interruption of the exposure operation, the photographic paper 16 after printing is gradually sent to the developing section 14 at a low speed, and the developing operation continues.

The rear end of the photographic paper 16 cut in this way is attached to the guide plate 2.
When the photographic paper 16 is fed out from the paper 8, due to its rigidity,
There is a turning property in which the rear end portion rebounds and is held between the first holding and conveying rollers 30 and 32.

However, in this embodiment, the auxiliary flap 112 lowers and covers the first nipping and transporting rollers 30°32 by its own weight, so that the rear end of the cut photographic paper is exposed to the first nipping and transporting rollers 30.
, 32.

If you want to start the exposure operation again in the printing section 12 with the rear end of the photographic paper 16 remaining as the first loop section 16A between the kite plate 28 and the first nipping and conveying roller 30,
The flap 70 is opened by driving the motor 46 as shown in FIG. 5(C).
from the second loop section to a vertical position. Here, if the first nipping conveyance roller 32 is brought into contact with the first nipping conveyance roller 30 and the first nipping conveyance roller 30 is rotated by the driving force of the motor 46, the photographic paper in the first loop portion 16A will be moved. This becomes the second loop portion 16B.

Thereafter, as the feeding by the first nipping and conveying rollers 30, 32 gradually progresses, the rear end of the photographic paper 16 flows down from the second nipping and conveying roller 90, as shown in FIG. 5(D). Here, the flap 70 is placed in the first position to close the first loop portion, as shown in FIG. 5(D), and the printing operation is started.

This rotational movement of the flap 70 is performed by receiving a command to move to the first position when the rear end of the photographic paper 16 passes through the sensors 144 and 146 once. Due to the frictional force between the roller and the a-ra 30, the roller may remain in contact with the first nipping roller 30. In this case, sensors 144, 146 are still connected to photographic paper 16.
Since the passage of the rear end of the flap 70 cannot be detected, the flap 70 cannot be placed in the first position. However, in this embodiment, since the sensors 140 and 142 are provided, the photographic paper 16
If the flap 70 is rotated to the first position after a predetermined period of time has elapsed after the rear end of the photographic paper has passed between the sensors 140 and 142, the rear end of the photographic paper can be moved to the first nipping conveyance roller 3.
Even when the flap 70 is stopped due to frictional force toward 0, the flap 70 is
It can be reliably moved to the desired position.

Providing the sensors 140 and 142 in this manner also serves as a countermeasure against city traffic. That is, after the power outage is resolved and the energization is turned off +If, the state in which the twisted photographic paper 16 is arranged can be detected by the sensors 140 and 142.

As a result, the leading edge of the newly printed photographic paper 16 is guided by the flap 70, and the first nipping conveyance roller 3
Sent to 0.32 minutes. When the leading end of the photographic paper 16 reaches between the sensors 144 and 146, the driving of the first nipping and conveying roller 30 is stopped again, and the flap 70 is moved from the first position, for example, vertically downward. Stop it in a suspended state. As the printing operation progresses in the printing section 12, the photographic paper 16 after printing is accumulated in a loop shape as a first loop section 16A.

In this way, even if the rear end of the photographic paper 16 that was exposed before the printing operation was interrupted remains undeveloped, it is possible to accumulate the photographic paper 16 in the first loop section after the printing operation is restarted. It is.

On the other hand, in conventional printing devices, the loop can only be formed in one place, so a cutter is required before and after the photographic paper storage device 10, and when printing is resumed after printing is interrupted, the loop can be formed at only one location. If this remains, there will be a problem that it may not be possible to resume printing.

[Effects of the Invention] As explained above, the photographic paper holding device according to the present invention is a photographic paper holding device which is arranged downstream of the printing section and sends out the continuous photographic paper after printing to the next process. a first nipping conveyance roller arranged in the stream to nip and convey the photographic paper and forming a first loop section between it and the printing section; a second nipping conveyance roller forming a second loop portion between the second nipping conveyance roller and the first nipping conveyance roller;
a guide member that is movable to a first position disposed between the pinching conveyance roller and a second position disposed between the first pinching conveyance roller and the second pinching conveyance roller; an auxiliary flap that is pivotally supported near the exit of the first loop section between the section and the first clamping and conveying roller, and that when the guide member is not in the first position, the first clamping and conveying roller is inserted; This reduces the number of cutters required and allows the baking operation to be restarted immediately even after the baking operation has been stopped.

In addition, the meandering of the loop part can be prevented and the photographic paper can be
``It has an excellent effect of maintaining constant feed.

[Brief explanation of drawings]

FIG. 1 is a sectional view showing this embodiment of a photographic paper holding device according to the present invention, and FIG. 2 is a sectional view taken along the line II-n in FIG. Figure 3 is a perspective view of the bracket for attaching the auxiliary flap, Figure 4 is a perspective view of the auxiliary flap, and Figures 5 (A) to (E).
) respectively indicate the operating state of the guide member in Fig. 15.
Figure 1. 10. Meeting photographic paper holding device, 12... Printing section. 14...Developing section, 16...Photographic paper, 24th e-cutter, 30.32...First nipping conveyance roller, 311-Flange, 90.98...φ second nipping conveyance roller, 112... - Auxiliary flap, 122... pin, 130... projecting piece.

Claims (1)

[Claims] (1) A photographic paper holding device that is placed downstream of the printing section and sends out the continuous photographic paper after printing to the next process. A first nipping conveyance roller forming a first loop portion therebetween, and a second loop portion disposed downstream of the first nipping conveyance roller to nip and convey the photographic paper and forming a second loop portion between the first nipping conveyance roller and the first nipping conveyance roller. a second pinching conveyance roller to be formed, a first position disposed between at least the printing section and the first pinching conveyance roller, and a second pinching conveyance roller disposed between the first pinching conveyance roller and the second pinching conveyance roller. A guiding member movable to a position is pivotally supported near the exit of the first loop portion between the printing section and the first nipping conveying roller, and when the guiding member is not in the first position, the first nipping conveying roller is movable. A photographic paper holding device characterized by having an auxiliary flap that covers an entrance portion.