JP3593423B2 - Photo drying equipment - Google Patents

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a photographic drying apparatus, and more particularly to a photographic drying apparatus having a predrying function for efficiently drying by preliminarily drying photographic paper to which moisture has adhered after baking and developing processing.
[0002]
[Prior art]
Conventionally, a film image is formed in a dark box on an emulsion surface of continuous photographic paper continuously supplied downstream as roll paper or photographic paper (hereinafter referred to as paper P) obtained by cutting the roll paper to a predetermined size. After the exposure baking, the processing liquid for development, bleaching, and washing is transported so as to sequentially pass through the built-in processing tank, and then transported through a drying device disposed downstream of the processing tank. Various photographic printing / developing apparatuses configured to be completely dried before being discharged outside have been put to practical use.
[0003]
For example, according to a photographic printing and developing apparatus disclosed in U.S. Pat. No. 5,307,114, continuous roll paper, which is built in a paper magazine while blocking light, is formed by using a cutter unit. After pre-cutting to a cut size, the emulsion side is conveyed to the exposure printing unit with the emulsion side facing up, then the film image set in the scanner is exposed and baked to the desired size, and then conveyed downstream for development. An apparatus has been proposed in which a processing liquid for bleaching and washing is sequentially conveyed through a processing tank containing the processing liquid, and then the water is removed and dried using a drying apparatus so that the liquid is discharged to the outside in an orderly and orderly manner.
[0004]
According to this apparatus, a drying apparatus of a hot air drying system is employed. This hot air drying system is composed of a nichrome wire heater for generating hot air, a large blower, and a rack device for continuously transporting the photographic paper in a substantially U-shape. This is to finish the drying.
[0005]
The hot-air drying system drying device configured as described above always exhales the heat generated from the nichrome wire heater by blowing the blower, so it is excellent in safety, and the front and back surfaces of the paper are evenly distributed. Also, since it is dried gradually, curling is less likely to occur and running stability is easily ensured.
[0006]
[Problems to be solved by the invention]
However, according to the drying device of the hot air drying method configured as described above, since the drying requires time, the length of the transport path by the rack device is set to be long for drying, and the desired drying processing capacity is increased. Need to secure.
[0007]
For this reason, conventionally, the length of the rack transfer path is long by making the drying device as high as possible in the vertical direction. As a result, the size of the drying device is increased, which in turn leads to an increase in the size of the developing and printing apparatus.
[0008]
Therefore, in order to adopt a relatively small hot air drying type drying apparatus, a preliminary drying apparatus for preliminary drying of photographic paper containing a large amount of water is provided. Even in this case, it is conceivable to use a small-sized hot-air drying type drying apparatus.
[0009]
However, in order to provide such a preliminary drying device, it is necessary to easily access the heater unit when a jam such as a heater break occurs during or during the conveyance of the photographic paper. Therefore, it is necessary to secure so-called maintainability. Further, since the water content is not uniform between the emulsion surface side and the base surface side of the printing paper, the degree of drying differs depending on the humidity and the drying temperature, which may cause curling (warping) on the printing paper.
[0010]
On the other hand, conventionally, since the photographic paper was directly conveyed from the outlet of the rinsing treatment liquid tank to the inlet of the hot-air drying means, there was no problem at least in the maintainability since the photographic paper could be easily accessed. If the photographic paper cannot be accessed due to the provision of such a preliminary drying device, it becomes difficult to employ the photographic printing paper, and it becomes impossible to realize a small size.
[0011]
Therefore, the present invention has been made in view of the above-described problems, and a water washing method has been proposed in order to provide a small-sized drying apparatus capable of sufficiently securing the drying processing ability without setting the entire length of the transport path for drying. It is an object of the present invention to provide a photographic drying apparatus which can easily access a photographic paper conveyed from an outlet of a processing liquid tank to an inlet of a hot-air drying means and improve maintenance.
[0012]
[Means for Solving the Problems]
In order to solve the above-mentioned problems and achieve the object, according to the present invention, a photographic paper which is sequentially conveyed through a plurality of processing liquid tanks of a photographic developing and printing apparatus and is washed is dried by a hot-air drying means. A photographic drying apparatus provided with a preliminary drying means for performing preliminary drying before the drying, wherein the preliminary drying means comprises a base fixed to the photographic developing and printing apparatus, and the hot-air drying from an outlet of a processing bath for washing. A transport section having a transport path including a plurality of drive rollers and driven rollers for transporting the photographic paper to the entrance of the means, a cover section that shields outside air with the base, and Lamp heater that applies light and heat simultaneously Heater unit equipped with And an air supply unit that takes in outside air into the inside of the cover part and then exhausts the outside to the outside, The heater unit includes: Through the opening formed in the base Has a slit which is attached to be detachable in the width direction of the photographic paper to be conveyed, and which avoids the conveyance path in the width direction from the leading end in the insertion direction, and the lamp heaters are provided on both sides of the slit, respectively. Is arranged It is characterized by:
[0013]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings.
[0014]
First, FIG. 1 is an external perspective view showing a main part of an entire structure of an apparatus main body 1 of a photographic printing and developing apparatus in which a cover detachably provided to a housing 2 shown by a two-dot chain line is removed. This shows that the paper magazine left storage unit 2a set as an option is additionally provided. Also, a discharge unit for sequentially discharging and organizing completed photographs is omitted.
[0015]
As is apparent from this figure, the apparatus main body 1 is configured to be vertically long and flat so that it occupies as little space as possible, while allowing for easy access to main parts from the front.
[0016]
As a result, even when the apparatus main body 1 is installed so as to be very close to the wall surface particularly in a narrow shop in Japan, it is necessary to carry out various operations that should be performed daily, for example, when replacing or replenishing the processing solution. In addition, it is designed so that the device can be easily used and access to the rear surface of the apparatus main body 1 is not required.
[0017]
The left storage section 2a of the paper magazine is detachably attached to the side of the apparatus 1 indicated by an arrow Y in the figure. Of paper magazines 3 can be simultaneously loaded.
[0018]
In this way, when the usage frequency becomes higher in demand, the photographic printing / developing apparatus 1 completed with only the paper magazine right storage unit 2b provided so that the paper magazine 3 can be appropriately added. Is first introduced into a laboratory, a photo studio, or the like, and the paper magazine left storage section 2a can be appropriately added based on the frequency of use after the introduction and the consumption of paper including panoramic photographs.
[0019]
On the other hand, the paper P coated with the color emulsion in advance on the photographic printing surface side is wound in a continuous long roll paper having a predetermined width (for example, 89 mm width) and in a state where light is completely blocked. And is rotatably built in the paper magazine 3.
[0020]
A bar code 20 recording the contents such as the width of the paper P and the type of paper emulsion is attached to a side surface portion of the paper magazine 3, and the paper magazine 3 is loaded into the left and right storage sections 2a and 2b. At this time, the contents are read by a barcode detector 21 fixed to the main body side, sent to the processor control unit 18, and the control of energization to a lamp heater described later is performed according to the read result.
[0021]
Further, in order to be able to use the paper magazine 3 in common for the paper magazine left storage section 2a and the paper magazine right storage section 2b, the outer shape is configured to be symmetrical as shown in FIG. Handles 3a for unloading and loading are provided on both wall surfaces. Further, a shutter plate (not shown) constituting an automatic opening / closing mechanism of an opening when the roll paper RP shown by a broken line in the figure is discharged to the outside of the paper magazine 3 includes a paper magazine right storage part 2b and a paper magazine left storage. It is configured to automatically open and close in the same manner when inserted into any of the parts 2a, so that the components are shared and the usability is improved.
[0022]
The cutter unit 4 provided in the vicinity of the paper magazine 3 is for cutting the continuously transported paper P into a desired size before printing in the exposure printing unit. The paper P cut into the cut size is first conveyed to the exposure printing unit 5 provided in the dark box 7, temporarily fixed on the table 8 by suction, and is ready for printing. The film F is sequentially fed by a frame to the scanner 6 shown in the figure, and the optical system 6a including a zoom lens or the like is adjusted automatically or manually to form an image of a desired size on the paper P and print. It is configured to attach.
[0023]
After this baking operation, the paper P is transported to the sub-transport section 9 disposed above the cutter unit 4 and then transported to the main transport section 10. A greeting unit 11 for printing a greeting or the like on a photograph in the middle is provided so as to be easily detachable. For this reason, it is necessary to frequently access the main transport unit 10, and the main transport unit 10 is configured to be easily pulled out in front of the housing 2.
[0024]
Further, a processing tank 12 for sequentially performing development, bleaching, and washing of the paper P after baking is provided in a downstream side of the main transport section 10 so as to have a stepped shape as shown in the drawing. The direction is changed by the reversing roll 13 provided between the pre-drying unit 30 and the paper is fed to the paper introduction unit 31 of the preliminary drying unit 30 and then to the drying unit 17. It is configured to discharge in the d direction.
[0025]
A rack device (not shown) is built in the processing tank 12 and transports the paper P, and a drive roller and an idle roller, which will be described later, are also provided inside the preliminary drying unit 30 so that the total length of the paper P is less than the total length. Although they are provided, one common motor 25 is provided as a drive source thereof, and is configured to be driven via power transmission means such as a chain, a sprocket, and a clutch.
Further, as shown in the figure, an opening 32 for grasping the handle 34 and pulling out the infrared heater unit 33 having one end opened forward (in the direction of arrow F) is formed in the near side of the preliminary drying unit 30. Thus, while taking out the infrared heater unit 33 easily, it is considered that the paper P, which is being conveyed by the respective rollers, can be removed without interference.
[0026]
A duct 22 is provided below the preliminary drying unit 30 and constitutes a guide means for circulating hot air as described later. Making it possible.
[0027]
On the other hand, a replenishment tank 15 for replenishing each processing solution is provided in a lower portion of the middle stage of the processing tank 12, while a used processing solution can be collected through a drain 14 below the tank. By opening only the cover (not shown), consideration is given so that all necessary daily operations can be performed.
[0028]
A power supply unit 19 is provided in the housing 2 occupying a space below the drying unit 17, and a processor control for performing various controls related to the processing tank 12 is provided on the power supply unit 19. A unit 18 is provided, and is fixed to the left side of the dark box 7, and exchanges various control data with the main control unit 16 which controls paper transport, thereby controlling the entire apparatus. It is configured to perform.
[0029]
Next, FIG. 2 is an external perspective view of an enlarged main part showing a state of paper conveyance in the main conveyance 10 of FIG.
[0030]
In this figure, the same reference numerals are given to the components already described, and the description is omitted. The paper P cut by the cutter unit 4 is formed by a large number of holes indicated by broken lines formed on the table 50. The suction is performed on the table 50 by the suction action of the fan 58 so as to eliminate the gap. Below the table 50, a suction unit 51 configured to be rotatable in a direction indicated by an arrow d3 by a rotation motor (not shown) is provided so as to be reciprocally movable along the transport direction of the paper (direction indicated by an arrow d1). The printing is performed by holding the paper P at the illustrated position.
[0031]
After the printing, the paper P is transported toward the main transport unit 10 in the direction of arrow d4, and after it is determined at the position of the paper P1 in the drawing whether or not it is a large format PL, the paper P is transported in the direction of arrow d5. You. Here, when the paper size is small (127 × 89 mm), the paper is sorted left and right so as to be at the positions of P3, P4, P5, and P6 so that the inside of the processing tank 12 is arranged in two rows. Transport. In this way, the two rows are conveyed in the direction of the arrow d9, and are sent to the processing tank 12, so that the processing speed can be increased. Also, in the case of a vertically long image such as a panoramic photograph (254 × 89 mm), it can be transported in two rows in the same manner.
[0032]
On the other hand, when it is desired to perform printing in a direction perpendicular to the transport direction of the film loaded in the film scanner 6, the turning motor is driven 90 degrees in the direction of arrow d3 so that printing can be performed. It is configured so that a plurality of different sizes can all be printed as paper.
[0033]
FIG. 3 is an external perspective view of the device 1 shown in FIG. In this figure, the same components as those already described are denoted by the same reference numerals, and the description thereof will be omitted. Unexplained components will be described. The preliminary drying unit 30 is provided in a limited volume portion just above the duct 22 as shown. A paper P containing water sent from the processing tank 12 with the emulsion surface Pa upward in the direction of the arrow d is introduced into the inside from the introduction part 31, and after preliminary drying, the drying unit with the emulsion surface Pa facing upward. The paper is fed between the sponge rollers 26 constituting the rack device provided in the rack 17. Thereafter, the inside of the drying unit 17 is conveyed upward so as to be substantially bypassed by the reversing roller 27 so as to be discharged.
[0034]
A slider 38 and a bracket 37 are fixed to a side plate 29 serving as a base for enabling the preliminary drying unit 30 to be moved and fixed in the front-rear direction with respect to the housing 2. After holding by 2d and 2k described later, it is fixed to the housing 2 with screws or the like. On the other hand, the infrared heater unit 33 which is provided so as to be able to be taken in and out of the preliminary drying unit 30 through the opening 32 as described above is fixed to the base by screws 73.
[0035]
A first cross-flow fan 35 is provided above the preliminary drying unit 30 so as to extend in the front-rear direction as shown in the figure, and introduces outside air into the inside. A second cross flow fan 36 for exhausting air is provided on the unit 17 side.
[0036]
Further, a main crossflow fan 23 which is in an upright state as shown in the drawing is disposed behind the drying unit 17. In the vicinity of the main heater unit 24, there is provided a heater having a plurality of built-in nichrome wire heaters 24a having a length substantially equal to the entire length of the main cross flow fan 23. Hot air is introduced into the drying unit 17 by sending heat generated by the main cross flow fan 23. In this way, warm air is blown to the emulsion surface Pa side of the paper P, then exhausted forward, and then sent to a cover (not shown) to be exhausted into the duct 22. In addition, as a configuration in which air is supplied to the heater 24 again, waste of heat generation is eliminated as much as possible.
[0037]
FIG. 4 is a sectional view taken along the line AA in FIG.
[0038]
In this drawing, a paper introduction part 31, a bracket 37 and a slider 38 are fixed to two side plates 29 provided in the front-rear direction of the paper surface, and the opening 32 is formed in the side plate 29 on the near side. ing. In order to transport the paper P cut in advance to a predetermined length by the cutter unit 4, each roller is provided at an interval equal to or less than the length of the paper P. A bearing (not shown) for rotatably supporting each of the idle roller 41, the drive roller 42, the idle roller 43, the drive roller 44, the idle roller 45, and the drive roller 46 is provided on the side plate 29.
[0039]
Each drive roller is configured to be automatically transmitted to the drive shaft of the motor 25 via a clutch while being fixed to a predetermined position of the housing 2. In addition, the pre-drying is performed and the pre-dried paper P is conveyed to the downstream drying unit 17 so that the conveyance speed of each roller is matched to prevent slack and unnecessary tension during the conveyance. Like that.
[0040]
On the other hand, between the side plates 29, a cover 47 having a sectional shape as shown in the drawing, and covers 48 and 49 are fixed, and the inside of the unit 30 is sealed. Further, for example, optical first sensors S1-1 (light-emitting unit) and S1-2 (light-receiving unit) for detecting the presence / absence of paper P on these covers 47, 48, and 49 in a non-contact state. , A second sensor S2-1 (light emitting unit) and S2-2 (light receiving unit).
[0041]
A filter 52 is provided on the outside air introduction side of the first cross flow fan 35, and a filter 53 is provided on the exhaust side of the second first cross flow fan 36.
[0042]
On the other hand, the infrared heater unit 33 is provided with a pair of lamp heaters 56 each provided with a reflector 57 so as to face each other as shown in FIG. In addition, while the paper P is being conveyed in the direction of the arrow d shown by the broken line, infrared rays are radiated from the front and back to evaporate the water actively. The lamp heater 56 is preferably a mid-to-far infrared light generating lamp, and in this embodiment, a mid-infrared heater sold by, for example, Japan Philips Corporation as model number 13847z-98 is preferable. According to this type of lamp heater, an appropriate heat ray is generated at the same time as the light quantity is generated, which is convenient for removing moisture from the paper surface.Also, since the heat ray reaches the deep part of the paper, there is an advantage that the curl is less generated. is there.
[0043]
A guide wire 55 is fixed to the opening of the reflector 57 as will be described later. The guide wire 55 conveys the paper P between the rollers 42, 41, 44, and 43, and the paper P on which the curl has occurred due to an unexpected cause. Move to the lamp heater 56 side to prevent the contact. When the paper jam occurs, the infrared heater unit 33 can be prevented from interfering with the paper when the infrared heater unit 33 is pulled out to the near side as described above.
[0044]
On the other hand, the paper transport path for transporting the paper as indicated by the arrow d in the dashed line is configured to have an inclination angle of about 45 degrees with respect to the horizontal plane to secure a desired transport length. By lowering the overall height of the unit 17, this can be achieved without changing the design of the housing. That is, the provision of the preliminary drying unit 30 enables drying even when the transport length of the drying unit 17 of the hot air drying system by the rack device is shortened, so that the drying unit 17 can be lowered. Accordingly, a model having a low overall height can be adopted as the cross flow fan 23. Similarly, the overall height of the main heater unit 24 can be reduced.
[0045]
With this configuration, the total height of the drying unit 17 can be increased by about 60% as compared with the conventional case where only the drying unit 17 having a high overall height is used.
[0046]
Next, when the conveyance of the paper P is started from the driving state of the cross flow fans 35 and 56 as an operation, the presence of paper is detected by the first sensor S1, and the energization of the lamp heater 56 is performed as described later. And perform preliminary drying. At this time, the outside air filtered by the filter 52 by the air blown by the cross flow fan 35 flows in the direction of the arrow H1, and then flows in the space between the cover 47 and the reflector 57 in the direction of the arrow H2. Then, it passes through the portion sandwiched by the lower reflector 57, is sucked by the lower cross flow fan 36, is filtered through the filter 53, and is directed to the opening 17a of the drying unit 17 in the direction of arrow H4. It will flow. Such air supply prevents overheating of the lamp heater 56 and directs air supply to the paper P to promote drying.
[0047]
FIG. 5 is an external perspective view showing the state of air supply in the preliminary drying unit and the drying unit 17, and in this figure, the air supply direction is indicated by double arrows H and K.
[0048]
As shown in the figure, the main cross flow fan 23 is driven to rotate in the direction of the arrow, and by blowing air in the direction of the arrow K1, the amount of heat generated by the heater wire 24a of the main heater unit 24 in the main drying unit 17 is reduced. Send in (arrow K2).
[0049]
For this purpose, the side surface of the drying unit 17 is open. After the hot air is dried in this way, air is supplied in the direction of arrow K3. At this time, air is blown into a cover (not shown), and the air is introduced into the duct 22 and the air is introduced in the direction of arrow K4. After flowing through the inside 22, air is sent to the main heater unit 24 (arrow K5).
[0050]
By performing such air circulation, the hot air is effectively used to minimize the power consumption. In addition, since the air sent from the preliminary drying unit 30 (arrow H4) is filtered hot air, the introduction of this air can promote drying.
[0051]
Next, FIG. 6 is a plan view of the infrared heater unit 33, showing a state where the infrared heater unit 33 is built in the preliminary drying unit 33.
[0052]
In the figure, the infrared heater unit 33 is composed of a base 60 to which the handle 34 is fixed, and extending portions 60a and 60b separated from the base 60 as shown in the figure.
[0053]
A reflector 57 provided with the above-described lamp heater 56 shown by a broken line is fixed to each of the extending portions 60a and 60b, and a groove for incorporating a cord 71 shown by a broken line therein is formed therein. It is connected to a lamp heater holding and energizing spring 63 via a thermostat (not shown) so as to be pressed on the back surface of the reflector. The lamp heater 56 is exchangeably held by the elastic holding force of the spring 63. A power supply connector 69 is connected to the cord 71, and power is supplied via the connector 69 in accordance with a predetermined power supply pattern PN described later.
[0054]
Therefore, when replacing the lamp heater after deterioration, etc., the connector 69 is detached, the handle 34 is gripped, and the infrared heater unit 33 is pulled out from the opening 32 so that the infrared heater unit 33 is pulled out of the preliminary drying unit 30. After taking out everything, you can do the replacement work. In this manner, after the lamp heater 56 is taken out, the lamp heater 56 is removed from the spring 63 holding the lamp heater 56, replaced with a new one, loaded, and fixed to the side plate 29 with the screw 73. Since it is a simple task, it can be done by users other than service personnel.
[0055]
Pins 61 are provided at the ends of the extension portions 60a and 60b. When the infrared heater unit 33 is set from the opening portion 32, the pin 61 is automatically inserted into the concave portion 66 of the back side plate 29. The extension portions 60a and 60b are positioned and fixed in a stationary state. Guide rails 62 are provided outside the extending portions 60a and 60b, respectively, so that the guide rails 62 can be guided and inserted into the groove portions 80 provided between the side plates 29 so as to be positioned as shown in the drawing. It is possible to fix it.
[0056]
On the other hand, the guide wire 55 is fixed on the facing surfaces of the extending portions 60a and 60b, respectively, as shown in the figure, and is configured so that paper can be conveyed therebetween.
[0057]
FIGS. 7A and 7B are external perspective views showing how the guide wire 55 is attached to the reflector 57. FIG. 7A shows the state before the attachment, and FIG. 7B shows the state after the attachment. In this figure, the conventional method of fixing the guide wire 55 to the reflector 57 has exclusively used a heat-resistant adhesive. As a result, the work process requires time and cannot be easily replaced. Therefore, as shown in the figure, as a method of fixing the guide wire 55 to the reflector 57, the guide wire 55 can be easily and reliably fixed.
[0058]
To describe this fixing method, first, in FIG. 7A, left and right projections 57c and 57d and a bottom 57b are formed on one of the edges serving as openings of the reflector 57 by press working or the like. In addition, an elliptical opening 57a is formed in a portion opposed to the opening by press working or the like.
[0059]
On the other hand, as shown in the figure, the guide wire 55 is formed by bending a wire having a diameter of about 2 mm made of a single stainless steel wire or the like, and is connected to a pair of left and right bases 55c, ends 55d and 55e, and a base 55c. It is formed from a hanging part 55b and a relay part 55a.
[0060]
In order to fix the guide wire 55 thus formed to the reflector 57, first, the relay portion 55a is inserted into the opening 57a in the direction indicated by the dashed arrow, and then the end portions 55d and 55e are gripped in the direction indicated by the arrow. After being narrowed, it moves under the left and right protrusions 57c and 57d by its own elastic force, and is placed on the bottom 57b.
[0061]
Subsequently, in FIG. 7B, the protrusions 57d and 57c are bent downward using a tool or a dedicated jig, and the ends 55d and 55e are fixed to complete the assembly.
[0062]
By completing in this way, the opening 57a side can protrude upward from the end of the reflex 57, so that paper can be conveyed in the direction of the arrow d to prevent the paper from being caught.
[0063]
Next, regarding the energization control of the lamp heater 56 of the preliminary drying unit, FIG. 8A is a block diagram for controlling the preliminary drying device, FIG. 8B shows an energization waveform of the lamp heater 56, and FIG. A description will be given based on a flowchart of the heater energization control.
[0064]
First, in FIG. 8A, the processor control unit 18 detects a signal line for detecting the rotation state of the motor 25, a signal line for transmitting the barcode content of the barcode detector 21, and the presence or absence of the paper P. The respective signal lines of the first sensor S1 and the second sensor are connected. In the processor control unit 18, there is provided an energization waveform generation unit 18a that stores reference patterns for generating energization patterns P1, P2, P3, and P4 as shown in FIG. 8B.
[0065]
On the other hand, the processor control section 18 obtains a predetermined power supply (5 v, dc) from the power supply section 19, and the heater driver 70 is connected to the power supply section 19, and the predetermined power supply of 50 v, 200 v is supplied to the lamp of the infrared heater unit 33. The heater 56 can be supplied via a connector 69.
[0066]
The heater driver 70 is connected to the processor control unit 18, amplifies the reference pattern from the energization waveform generation unit 18a, generates energization patterns P1, P2, P3, and P4 by an amplification relay circuit (not shown). 56.
[0067]
In FIG. 8B, the energization pattern P1 alternately turns on and off the AC voltage 50v with a period of about 100 ms. In the energization pattern P2, at the start of energization, the AC voltage 50V is turned on for about 100 ms, and subsequently, the AC voltage of 200V is energized for about 1 second. The energization pattern P3 alternately turns on and off a voltage of about 200 V of the AC power supply with a cycle of 100 ms. The energization pattern P4 is a pattern in which, at the start of energization, the voltage 200v of the AC power supply of about 160 ms is turned on and turned off for about 40 ms.
[0068]
Next, a control example of the energization control of the lamp heater will be described with reference to the flowchart of FIG.
[0069]
When the control is started after the apparatus 1 is started, first, in step S1, the content recorded in the barcode 20 is read by the detector 21 in accordance with the loading operation of the paper magazine 3, so that the width of the paper is measured. And the type of emulsion are temporarily stored in the processor controller 18. Subsequently, the process proceeds to step S2, where it is determined whether the motor 25 is rotating. In this step S2, for example, immediately after the start-up of the device 1, it takes time for initialization or the like, and if the motor 25 has not yet been started and is not rotating, the process proceeds to step S3. Without energizing the lamp heater 56, the process proceeds to step S12 and returns.
[0070]
If it is determined in step S2 that the motor 25 is rotating, the process proceeds to step S4, in which the lamp heater 56 is energized in the energization pattern 1 described above, so that energization at a voltage of 50 V or less is performed. Perform preheating.
[0071]
Subsequently, in step S5, the first sensor S1 determines whether or not the state in which the paper P has been transported is detected. When the presence of the paper P is detected, the process proceeds to step S6, where the first first paper S Is determined. When the absence of paper is detected in step S5, the process returns to step S4, and the power is continuously supplied in the power supply pattern P1.
[0072]
If it is determined in step S6 that the paper is the first sheet of paper, power is supplied in the power supply pattern P2, and the lamp is activated in a short time so as to have the standard brightness. On the other hand, if it is determined in step S6 that it is not the first sheet, the process proceeds to step S8, and it is determined whether or not the paper P is the second or subsequent sheet. Then, the process proceeds to step S9, and the power is supplied in the power supply patterns P4 and P3.
[0073]
That is, based on the content of the paper in step S1, for example, in the case of a roll paper having a large width, the energization pattern P4 is selected. In the case of a roll paper having a narrow width, the pattern P3 is selected.
[0074]
As described above, when the paper containing moisture is heated by being conveyed by each roller while being energized, the temperature of the paper containing water is rapidly increased, and when the paper exits the preliminary drying unit, drying of about half of the entire drying process can be completed. Become like Further, it is possible to optimally control the energization of the lamp heater 56 according to the paper width and type.
[0075]
Subsequently, in step S10, the presence or absence of paper is detected by the second sensor S2, and if it is determined that the paper has passed, the process proceeds to step S11, where the heater power is turned off, and the process returns.
[0076]
By controlling the lamp heater 56 as described above, an appropriate heat ray is generated at the same time when the light amount is generated, so that curling can be prevented, and the paper can be removed from the paper surface and then sent to the drying unit 17.
[0077]
According to the above-described embodiment, only the case where the pre-cut paper is dried has been described. However, the present invention is not limited to this, and it is needless to say that the present invention can be applied to the case where continuous photographic paper is dried. . In this case, the distance between the drive rollers and the idle rollers is increased so that the rollers can be conveyed with fewer rollers.
[0078]
In addition, the time required for removing the connector 69 to replace the infrared heater unit 33, removing the screw, replacing the lamp heater, and fixing the lamp heater again was about 1 minute. In addition, since the infrared heater unit 33 is formed as a separate component, it is possible to share the assembly work, and to obtain a secondary advantage that the assembly workability can be improved.
[0079]
【The invention's effect】
As described above, according to the present invention, in order to provide a small-sized drying apparatus capable of sufficiently securing the drying processing capacity without setting the entire length of the transport path for drying, from the outlet of the rinsing processing liquid tank. It is possible to provide a photographic drying apparatus which can easily access the photographic paper conveyed to the inlet of the hot-air drying means and can improve the maintainability.
[0080]
[Brief description of the drawings]
FIG. 1 shows a paper magazine left storage unit 2a which is set as an option, in which all covers provided partially detachably with respect to a housing 2 are removed to show a main part of the entire configuration of the photographic printing and developing apparatus 1. FIG. 4 is an external perspective view showing a state in which is added.
FIG. 2 is an enlarged perspective view of an essential part showing a state of paper conveyance in a main conveyance 10 of FIG.
FIG. 3 is an external perspective view of a drying unit including a preliminary drying unit.
4 is a sectional view taken along the line AA of FIG. 3;
FIG. 5 is an external perspective view showing a flow of air in a drying unit including a preliminary drying unit.
6 is a plan view of the infrared heater unit 33. FIG.
FIGS. 7A and 7B are external perspective views showing how a guide wire is attached to a reflector, wherein FIG. 7A shows a state before attachment and FIG. 7B shows a state after attachment.
FIG. 8A is a block diagram for controlling a predrying device, and FIG. 8B shows an energization waveform of a lamp heater.
FIG. 9 is a flowchart of control of energization of a lamp heater.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Photo printing and developing apparatus, 2 ... Housing, 2a ... Paper magazine right storage part, 2b ... Paper magazine left storage part, 3 ... Paper magazine, 4 ... Cutter unit, 5 ... Exposure printing part, 6 ... Film scanner, 7 ... dark box, 8 ... table, 9 ... sub-transport section, 10 ... main transport section, 11 ... greeting unit, 12 ... processing tank, 13 ... reversing roll, 14 ... drain, 15 ... replenishment tank, 16 ... main control section, 17 ... Drying unit, 18 ... Processor control unit, 19 ... Power supply unit, 20 ... Barcode, 21 ... Barcode detector, 22 ... Duct, 23 ... Main cross flow fan, 24 ... Main heater unit, 25 ... Motor, 26 ... Sponge roller, 27: reversing roller, 29: side plate, 30: preliminary drying unit, 31: paper introduction unit, 32: opening, 33: infrared heater unit , 34 ... handle, 35 ... cross flow fan, 36 ... cross flow fan, 37 ... bracket, 38 ... slider, 39 ... idle roller, 40 ... drive roller, 41 ... idle roller, 42 ... drive roller, 43 ... idle Roller, 44: Drive roller, 45: Idle roller, 46: Drive roller, 47: Cover, 48: Cover, 49: Cover, 50: Table, 51: Suction unit, 52: Filter, 53: Filter, 55: Guide wire , 56 ... (middle infrared) lamp heater, 57 ... reflector, 58 ... fan, 60 ... base, 61 ... pin, 62 ... guide rail, 63 ... spring, 66 ... recess, 69 ... connector, 70 ... heater driver, 71 ... Code, 73: screw, P: paper (print paper), RP: roll paper, S1 ... 1 sensor, S2 ... second sensor

Claims (4)

A photographic drying apparatus provided with preliminary drying means for pre-drying photographic paper in a washing state, which is sequentially conveyed through a plurality of processing liquid tanks of a photographic developing and printing apparatus, before drying with hot air drying means,
The preliminary drying means,
A base fixed to the photographic developing and printing apparatus;
A transport unit having a transport path including a plurality of drive rollers and driven rollers for transporting the photographic paper from an outlet of the processing liquid tank for washing to an inlet of the hot-air drying unit,
A cover portion that shields outside air with the base portion,
A heater unit having a lamp heater for simultaneously applying light and heat to the front and back surfaces of the photographic paper being transported;
An air supply unit that takes in outside air into the inside of the cover part and then exhausts the outside,
The heater unit is detachably mounted in the width direction of the photographic paper being conveyed through an opening formed in the base , and avoids the conveyance path in the width direction from the leading end in the insertion direction. A photographic drying device comprising: a slit; and a lamp heater disposed on both sides of the slit . The heater unit includes:
As the lamp heater, an infrared heater having an overall length substantially equivalent to a width dimension of the transport unit,
A reflector provided so as to surround the infrared heater, for reflecting the light amount and the heat amount and applying the reflected light amount and the heat amount to the front and back surfaces of the printing paper;
2. The photographic drying apparatus according to claim 1, wherein a pair of a pair including a guide provided at an opening of the reflector for guiding photographic paper downstream is provided on both sides of the slit. 3. . Guiding the heater unit to a predetermined position through the opening of the base, guiding and positioning the heater unit to the predetermined position, and providing means for fixing the heater unit on the heater unit side and the base side. The photographic drying device according to claim 1 or 2, wherein The photographic drying device according to claim 2, wherein the infrared heater is detachably provided at a current-carrying portion of the elastic body, and a current-carrying cord connected to the current-carrying portion is wired along a back side of the reflector. apparatus.

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