JP2515362B2 - Photographic paper transport device for photo printing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention is for a photographic printing apparatus for transporting photographic printing paper from a photographic printing apparatus for printing an image from a negative film to photographic printing paper to a developing apparatus. The present invention relates to a photographic paper conveying device.

[Conventional technology]

In many photographic printing apparatuses, a roll of photographic printing paper is sent from the leading end to the printing section, and after printing, each image is cut by a cutter and reaches the developing section.

However, the developing speed of the photographic paper in the developing section is constant at a low speed, and the photographic paper fed from the printing section is high in speed and intermittent. Therefore, between the printing section and the developing device, it is necessary to provide a connecting means that is driven at the transport speed of the printing section at the inlet portion and at the transport speed of the developing device at the outlet portion. It gets complicated.

SUMMARY OF THE INVENTION In consideration of the above facts, an object of the present invention is to obtain a photographic printing paper conveying device for a photographic printing device, which can transfer photographic paper after printing between a printing device and a developing device without requiring a special driving force. Is.

[Outline and Action of Invention]

The present invention is a conveying device that conveys photographic paper after printing from a photographic printing unit to a developing device, which is in an open state before feeding the photographic paper from the printing unit and is in a closed state after feeding, Opening / closing rotary feeding means for nipping and conveying photographic paper by receiving the transmitted driving force, and driving force for photographic paper feeding of the developing device is transmitted to the opening / closing rotary feeding means to convey speed to the developing device at the same speed. It is characterized by having a state of driving the opening / closing rotary feeding means and a transmission means capable of cutting off the transmission of the driving force.

Therefore, in the present invention, if the transmission means is connected to the developing device, the cut photographic paper can be delivered to the developing device at the same conveyance speed as the developing device, and a special driving force is required separately. Absent.

Example of Invention

FIG. 1 is a sectional view of a photographic processor to which the present invention is applied.

The printing paper 14 stored in the printing paper storage unit 12 is sent to the printing unit 16 to expose the image from the negative film, and is sent to the developing unit 20 via the transfer device 18 which is an opening / closing transfer unit. ing.

The unexposed photographic printing paper 14 is wound and stored in a roll in the photographic printing paper storage unit 12, and is sequentially sent to the printing unit 16 by the nip transport rollers 22, 24 and the nip transport rollers 26, 28, 30. ing. The nipping / conveying roller 26 is driven by a motor 31 so that the nipping / conveying roller 28 and the nipping / conveying rollers 28 and 30 are provided with photographic paper
It is a configuration in which 14 are sandwiched and conveyed.

The printing paper 14 after the image from the negative film (not shown) is printed in the printing section 16 is sent to the cutter 38 by the nip conveying rollers 32 and 34 driven by the motor 31.

The transfer device 18 has an opening / closing structure having a fixed frame 40 and a moving frame 42 as shown in FIGS. 2 to 4 and 7, and the fixed frame 40 has both side portions (both end portions in the left-right direction in FIG. 3).
To the leg plates 40A and 40B that are erected at a right angle from the
44 is laid across with its axis horizontal. These spindles
Rollers 46 are fixed to an intermediate portion of 44, and these rollers 46 project through an opening 47 of the fixed frame 40. Further, a gear train 50 is fixed to a tip end portion of each of the support shafts 44 that penetrates the leg plate 40A, and is connected to a lifting motor 52. This ascending motor 52 is a printing paper made by rollers 46.
The transport speed of 14 is considerably higher than the developing speed in the developing unit 20.

On the other hand, in the movable frame 42, each support shaft 54 is supported in parallel with the support shaft 44 by leg plates 42A and 42B that are erected from both ends in the width direction, and a plurality of rollers fixed to these support shafts 54. 56 is configured to penetrate the opening 43 of the moving frame 42 and come into contact with the outer periphery of the roller 46. For this reason, the rollers 46 and 56 form a conveyance path for the photographic paper 14 between them, and as shown in FIG. 2, the photographic paper 14 fed horizontally from the printing section in the direction of arrow A is raised substantially vertically. And can be conveyed in the direction of arrow B.

Note that the fixed frame 40 and the movable frame 42 have photographic paper 14
Ribs 40C and 42C are formed so as to project toward the conveyance path of (FIG. 7), and are in the longitudinal direction in the conveyance direction of the printing paper.

Arms 58 and 60 project from the leg plates 42A and 42B, respectively, and extend to the outside of the leg plates 40A and 40B. Guide long holes 62 and 63 are formed along the longitudinal direction near the tips and bases of the arms 58 and 60, and support rollers 64 and 65 pivotally supported by the leg plates 40A and 40B are inserted. For this reason, the moving frame 42 moves in the direction in which the moving frame 40 moves toward and away from the moving frame 40
The photographic paper conveyance path can be opened and closed by moving in parallel (in the horizontal direction in the figure).

As shown in FIG. 3, the opening / closing motor 66 fixed to the leg plate 40B has an output shaft wound around an endless belt 68, and the endless belt 68 is wound around a plurality of mutually parallel rotating shafts 70. These rotating shafts 70 are adapted to rotate.
These rotary shafts 70 are pivotally supported by leg plates 40A and 40B, and cams 72 are fixed to both ends inside the leg plates 40A and 40B. These cams 72 engage with rollers 73 pivotally supported by the arms 58 and 60, and bring the moving frame 42 into and out of contact with the fixed frame 40 when the opening / closing motor 66 rotates. Roller 73
Passes through the long hole 76 formed in the leg plate 40A, and the leg plates 40A and 40B
It is inside. Further, the moving frame 42 receives a biasing force that approaches the fixed frame 40 by an elastic body (not shown). Also, long holes 78 are formed in the arms 58 and 60, and
Interference with the end of the rotary shaft 70 protruding from 40A and 40B is prevented.

A sensor 501 is arranged above the lowermost part of the support shafts 44 and 54 arranged vertically, and a sensor 502 is arranged above the uppermost roller so that the leading end of the photographic paper can be detected. .

A roller 80 is arranged vertically above the uppermost rollers 46 and 56 on one side of the conveyance path of the photographic printing paper 14 and an opening / closing roller 82 is arranged on the other side thereof, and constitutes an opening / closing conveyance means together with the conveyance device 18.
The support shaft 80A of the roller 80 is supported by an extension frame 84 extending from the leg plates 40A, 40B, and the opening / closing roller 82 is supported by a guide groove 86 of a bracket 85 fixed to the extension frame 84.
82A is housed and movable in the direction of contact with and separation from the roller 80. The open / close roller 82 receives a biasing force of a spring (not shown) in the direction of contacting the roller 80,
When the 88 is activated, it can be separated from the roller 80. For this reason, the extension frame 84 has pins 90 on the locking arm.
The middle portion of 92 is pivotally supported, one end of the rocker arm 92 corresponds to the support shaft 82A, and the other end is connected to the solenoid 88 via a pulling link 94. Therefore, when the solenoid 88 is operated, the rocker arm 92 rotates counterclockwise in FIG. 5 to separate the open / close roller 82 from the roller 80, but when the solenoid 88 is not operated, the open / close roller 82 moves to the roller 80. To come into contact with.

Guide plates 96 and 98 are provided on the downstream side of the rollers 80 and the opening / closing rollers 82 and are connected to a photographic paper conveyance path between the fixed frame 40 and the movable frame 42, so that the photographic paper 14 is substantially horizontal. After the direction is changed to, it is sent to the developing unit 20.

A part of the endless belt 102 is wound around the gear 100 fixed to one end of the roller support shaft 80A in the axial direction, and the endless belt 102 is wound around the gears 104 and 106 so that the axis is substantially triangular. Has become.

A large gear 110 is fixed to the rotary shaft 108 fixed to the gear 104. Further, a rotary arm 112 is coaxially supported by a support shaft 111A to which a gear 111 which meshes with the large gear 110 is fixed, and a support shaft 113 is supported by a support shaft 113 extending from a part of the rotary arm 112. A connecting gear 120 is pivotally supported via a planetary gear 116 and a support shaft 118 via. Planet gears
Reference numeral 116 meshes with a connecting gear 120 and a gear 121, and this gear 121 is connected to the gear 111 via a support shaft 111A.
Therefore, when the rotary arm 112 rotates clockwise from the solid line state in FIG. 5 to the imaginary line state, the coupling gear 120 causes the transmission gear 1 to move.
It is designed to mesh with 22. This transmission gear 122 is rotated by a drive motor (not shown) of the developing unit 20.

Therefore, the rotating arm 112 transmits the rotational force of the developing unit 20 to the roller 80 in the phantom line state of FIG.
80 can be stopped.

A tension coil spring 128 is interposed in the rotary arm 112 between the support shaft 114 and the pin 126 of the extension frame 84. The tension coil spring 128 has its axis passing through the axis of the support shaft 111A and moving to the opposite side between the solid line state and the imaginary line state in FIG. Is arranged so as to perform a so-called snap-action operation in which the rotary arm 112 can be selectively moved between the imaginary line state and the solid line state.

The rotary shaft 108 on which the gear 104 is mounted has a transport roller 13
4 is stuck. The transport roller 134 is arranged on one side of the photographic printing paper 14 transported in the horizontal direction, and contacts the roller 136 pivotally supported on the other one side to transmit a driving force to the photographic printing paper 14.

A sensor 502 that mainly detects the rear end of the photographic printing paper 14 is provided between the rollers 46 and 56 at the uppermost end and the rollers 80 and 82.
A sensor 503 that mainly detects the front end of the photographic printing paper 14 is arranged between the rollers 0 and 82 and the rollers 134 and 136.

 Next, the operation of this embodiment will be described.

The rotating arm 112 rotates in advance from the solid line state in FIG. 5 to the imaginary line state to engage the coupling gear 120 with the transmission gear 122. As a result, the support shaft 80A and the rotary shaft 108 are connected to the developing unit 20.
The rollers 80, 82 and the transport rollers 134, 136 are rotated at the transport speed of.

The photographic paper 14 stored in the photographic paper storage unit 12 is pulled out to the printing unit 16 by the driving force of the nip transport rollers 22 and 24 and the driving force of the rollers 26, 28 and 30, and an image from a negative film (not shown) is printed. To be

Here, it is determined whether or not the moving frame 42 is in the open position away from the fixed frame 40 as shown by step 201 in FIG. That is, it is determined whether or not the moving frame 42 of the carrying device 18 is separated from the fixed frame 40. If not, the opening / closing motor 66 is activated and the cam 72 rotates to move the moving frame 42 to the fixed frame 40. Is separated from (step 202).

At this point, the raising motor 52 is driven by the step 204 to rotate the roller 46, and the motor 31 is driven by a predetermined number of pulses at the step 206. Therefore, if the leading edge of the photographic paper 14 does not pass the sensor 501, an error process is performed in step 209, and if it passes the sensor 501, the raising motor 52 is stopped and the cutter 38 is operated in step 210, and the photographic paper 14 is Cut at the trailing edge of the image (step 21
2).

Here, in step 214, it is determined whether or not X seconds have elapsed after the photographic printing paper 14 that was sent out previously last time has passed the sensor 502. At the start of the printing operation, the printing paper which has been printed previously is already sent to the developing section 20, so it means that more than X seconds have passed.

After this Xsec has elapsed, at step 216 the opening / closing motor 6
6 is operated, the moving frame 42 approaches the fixed frame 40, and the roller 56 is brought into contact with the roller 46. At the same time, the raising motor 52 operates and the rollers 46 and 56 rotate (step 218). Further in step 220 the solenoid 88
Is operated to separate the open / close roller 82 from the roller 80.

In step 222, if the sensor 530 does not detect the leading end of the printing paper 14 within a predetermined time, error processing is performed in steps 223 and 225. If the leading end of the printing paper is detected within a predetermined time, the solenoid 88 is sent in step 224. And the opening / closing roller 82 is brought into contact with the roller 82. At the same time, the opening / closing motor 66 rotates in step 226, the moving frame 42 is separated from the fixed frame 40, and the step 228
At, the ascending motor 52 is stopped. Therefore, the printing paper is taken into the developing unit 20 in the direction of arrow B at the same speed as the developing unit 20 by the rollers 80 and 82 and the conveying rollers 134 and 136 which are rotated at the conveying speed of the developing unit 20. In this case, the rear end of the printing paper is held between the rollers 46 and 56, so that an unreasonable external force does not act on the printing paper.

Here, when a transport stop button (not shown) is pressed in step 230, the operation of the photographic paper accommodating section 12, the printing section 16, and the transport device 18 except the developing section 20 is stopped, but if the transport stop button is not pressed, the step is stopped. It waits for Zsec at 232 and then reaches step 201.

The Xsec shown in the above step 214 will be described.

This Xsec is the time from when the trailing edge of the preceding photographic paper passes the sensor 502 to when the conveyance of the succeeding photographic paper 14 is started. If it is conveyed within 20, the time t ₁ for the preceding photographic paper 14 to cross the sensor 502 and reach dmm ahead of the sensor 503 is Is. Here, l ₁ is the length from the cutter 38 to the sensor 503, l ₂ is the length from the cutter 38 to the sensor 502, and p is the transport speed of the printing paper 14 in the developing section 20. If the length of the photographic paper is L, the time t ₂ for sending the next photographic paper through the transport device 18 to reach the sensor 503 is: Is. Here, a is a moving speed when the moving frame 42 is moved toward and away from the fixed frame 40, and V is a linear speed of the rollers 46 and 56 by the lifting motor 52. Therefore Xsec is Becomes If X is determined in this way, the preceding photographic paper and the following photographic paper will be conveyed in the developing section 20 at an interval of d.

Next, Zsec shown in step 232 is the time until the trailing photographic paper is sent out by the motor 31 after the leading edge of the preceding photographic paper has passed the sensor 503. This means that if the trailing photographic paper (length L ₂ ) enters the transport device 18 immediately after the preceding photographic paper (length L ₁ ) passes through the sensor 503, the overlap amount S of the preceding photographic paper and the trailing photographic paper will be S. Is S = L ₁ + L ₂ −l ₁ (4) Now time delay to the ZSEC, the conveying speed of the developing unit 20 and the P mm / sec, Obaratsupu amount S becomes _{S = L 1 + L 2 -l} 1 -P · Z ...... (5). If S = 0, then Z is Becomes Therefore, if the trailing photographic papers are sent out after Zsec calculated by the equation (6), they will be sent to the developing unit 20 without overlapping each other.

Next, in the above formula, l ₁ = 768 mm, l ₂ = 726 mm, and the linear velocity V of the transfer device 18 is 157 mm / sec at 50 Hz and 188.5 mm / s at 60 Hz.
ec, a is 0.3Hz at 50Hz, 0.25sec at 60Hz, d is 30mm, p
Is 9.5 mm / sec, X and Z are as follows.

Therefore, without increasing the interval between the preceding printing paper and the following printing paper by Xsec and Zsec shown in Table 1,
In addition, they can be transported without overlapping. The above Zsec is
If it is less than 384 mm, it will be a negative value and will be practically 0 sec.

Fixed frame 40 and moving frame shown in the above embodiment
Various combinations other than the combination of the motor and the cam shown in FIGS. 1 and 2 can be applied to the structure for connecting and disconnecting 42.

〔The invention's effect〕

Since the present invention has the above-mentioned configuration, it has an excellent effect that the printing paper can be delivered to the developing device without requiring a special driving force.

[Brief description of drawings]

FIG. 1 is a sectional view showing a photographic processing apparatus to which the present invention is applied, FIG. 2 is a partially cutaway side view showing a carrying device, FIG. 3 is a right side view of FIG. 2, and FIG. 4 is a carrying device. And FIG. 5 is a side view showing the connecting structure of the conveying device and the developing portion, and FIG. 6 is an exploded perspective view showing mainly roller-related parts of the conveying device. FIG. 7 is an exploded perspective view showing mainly frame-related parts of the carrying device, and FIGS. 8A and 8B are flow charts showing the operation. 14 …… photographic paper, 16 …… printing section, 18 …… conveying device, 20 …… developing section, 80 …… roller (opening / closing rotary feeding means), 82 …… opening / closing roller (opening / closing rotary feeding means), 88 …… Solenoid (opening / closing rotary feeding means), 102 ... endless belt (transmission means), 110 ... large gear (transmission means), 112 ... rotary arm (transmission means), 114 ... spindle (transmission means), 121 ... … Gears (transmission means).

Claims (4)

(57) [Claims] 1. A transporting device for transporting photographic printing paper after printing from a photographic printing section to a developing apparatus, which is opened before feeding photographic printing paper from the printing section and closed after feeding. Opening / closing rotary feeding means for nipping and conveying the printing paper by receiving the driving force transmitted, and driving force for conveying the printing paper of the developing device to the opening / closing rotary feeding means to convey the printing paper to the developing device at the same speed. A photographic printing paper conveying device for a photographic printing apparatus, comprising: a state of driving the opening / closing rotary feeding means at a speed; and a transmitting means capable of cutting off the driving force transmission. 2. The opening / closing rotary feeding means is fixedly arranged on one side of the photographic paper conveyance path, and is arranged on the opposite side of the fixed arrangement roller and the photographic paper conveyance path to the fixed arrangement roller. The photographic printing paper conveying device for a photographic printing apparatus according to claim 1, further comprising: an opening / closing roller that can be brought into contact with and separated from the fixed arrangement roller, and the driving force of the developing device is transmitted to the fixedly arranged roller by the transmission means. 3. A sensor for detecting printing paper is provided on the downstream side closer to the developing device than between the fixed arrangement roller and the opening / closing roller, and the opening / closing roller is fixedly arranged after the sensor detects the printing paper. The photographic printing paper conveying device for a photographic printing apparatus according to claim 2, which is brought close to a roller. 4. The transmission means selects a state in which the driving force of the developing device is transmitted to the opening / closing rotary feeding device and a state in which the driving force of the developing device is cut off by contact and separation of a connecting gear with a transmission gear provided in the developing device. 4. A photographic printing paper conveying device for a photographic printing device according to claim 1.