JP2002040570A - Photo processing machine - Google Patents

Abstract

(57) [Summary] [Problem] To provide a photographic processing machine capable of transporting a photographic paper without applying an excessive transport force, preventing damage to the photographic paper, and improving quality. In a photographic processing machine provided with a transport mechanism for transporting photographic paper P of a predetermined size, the transport mechanism includes a plurality of rotationally driven transport roller pairs and separates each transport roller pair from each other. The pressing and releasing of the conveying roller pair 8 is controlled so that the photographic printing paper P is conveyed while being nipped by only one conveying roller pair 8.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a photographic processor provided with a transport mechanism for transporting photographic paper of a predetermined size.

[0002]

2. Description of the Related Art Generally, a paper magazine containing, for example, long photographic paper in a roll form is mounted on an airframe, and photographic paper is drawn out of the paper magazine and cut into a predetermined print size. 2. Description of the Related Art There is known a photographic processor that prints an image on photographic paper.

In this type of photographic processing machine, a cutter for cutting a long photographic paper drawn from a paper magazine into a predetermined size, and a plurality of transport roller pairs for transporting the photographic paper are provided in the machine. And a light exposure unit.

[0004] The transport roller pair is composed of a drive roller that is driven to rotate by a motor, and a driven roller that presses against the roller surface of the drive roller and rotates.

In the type of exposing while transporting the photographic paper in the exposure section, the photographic paper is transported to the exposure section while meandering by a plurality of transport roller pairs disposed between the paper magazine and the exposure section. In such a case, the photographic paper may not be exposed at a correct position in the exposure unit. Therefore, generally, a width regulating guide that regulates the movement of the photographic paper in the width direction in the transport path is provided in the transport path between the paper magazine and the exposure unit.

Accordingly, when a photographic paper cut to a predetermined size is transported to the exposure unit by a plurality of transport roller pairs disposed between the paper magazine and the exposure unit, FIG. 5 and FIG. As shown, the cut photographic paper P is conveyed to the exposure unit B while the movement in the conveyance direction width direction is regulated by the width regulation guide A.

Further, in the transport path from the paper magazine to the exposing section B, the photographic paper P of a predetermined size is transported to the exposing section B while all of the plurality of driven transport roller pairs C are pressed. ing.

[0008]

Normally, the interval between each pair of transport rollers C is two pairs of transport rollers C
Are set so that both ends of the general-purpose photographic paper P can be pinched. When the general-purpose size is conveyed, one photographic paper P is conveyed by a pair of conveying rollers C substantially.

However, in the case of a photographic paper P having a size larger than a general-purpose size, as shown in FIGS. Therefore, when the photographic paper P is meandered during the conveyance while the force for pressing the photographic paper P is increased and the conveyance force is increased as compared with the case where the photographic paper P is conveyed while being nipped by only the pair of conveyance rollers C, 6, the force in the meandering direction is also increased, and as shown in FIG. 6, printing is performed by hitting the width regulating guide A more strongly than the effect of restricting the movement in the width direction of the conveyance direction by the width regulating guide A. Paper P
The problem of damage is greater.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned problems, and enables the photographic paper to be conveyed without applying an excessive conveying force, thereby preventing damage to the photographic paper and improving the quality. It is an object of the present invention to provide a photographic processor that can be designed.

[0011]

Means for Solving the Problems Claim 1 of the present invention
According to the invention described in (1), in a photographic processing machine provided with a transport mechanism for transporting photographic paper of a predetermined size, the transport mechanism includes a plurality of rotationally driven transport roller pairs and a widthwise movement of the photographic paper in a transport path. And a width regulating guide that regulates the pressure, and each transport roller pair can be individually pressed or released, so that the photographic paper can be transported while being pinched by only one transport roller pair. The release is controlled.

According to a second aspect of the present invention, there is provided the photographic processing machine according to the first aspect, wherein the photographic printing paper is held between the pair of conveying rollers on the upstream side in the pressed state, and the photographic paper is provided on the next downstream side. The configuration is such that when the leading end of the photographic paper in the transport direction reaches the transport roller pair, the pressure contact of the upstream transport roller pair is released.

[0013]

Embodiments of the present invention will be described below with reference to the drawings. The photographic processing machine of the present embodiment shown in FIG. 1 shows a printing processing unit 2 for printing image information on photographic paper P, which is a photosensitive material, and includes two paper magazines 3, 3, Image forming apparatus 4 using laser light, five transport units 51 to 51 constituting a transport mechanism
55, a main controller 6 for controlling the operation of the entire photographic processor, and an image forming controller 7 for controlling the driving of the image forming apparatus 4.

Each of the paper magazines 3 and 3 of the printing unit 2
Contains a roll of photographic paper P, which is a photosensitive material.

Although not shown, the image forming apparatus 4 scans the laser beam continuously in one direction with a laser irradiating section for irradiating the laser beam, a mirror section for reflecting the light radiated from the laser irradiating section, and a laser beam. The unit is equipped with a polygon mirror and a light control filter.

The image forming apparatus 4 scans and exposes photographic paper P by reflecting image light emitted from a laser irradiating unit on a polygon mirror based on digital image data acquired by a scanner (not shown), thereby conveying the image. The photographic paper P inside is line-exposed.

The image forming apparatus 4 is not limited to the laser beam system, but may be another digital exposure system such as a PLZT shutter system, a fluorescent beam system, and a liquid crystal shutter system. You can choose.

Each of the transport units 51 to 55 constituting the transport mechanism is, for example, a first transport unit 51 shown in FIG.
And a driving roller 81 that is driven to rotate via a roller driving motor (not shown).
And a driven roller 82 that is pressed against and rotates around the roller surface.

Although not shown, between the paper magazines 3 and 3 and the first transport unit 51, a cutter for cutting the photographic paper P drawn from each paper magazine 3 or 3 into a predetermined size. And transports the photographic paper P cut to a predetermined size in each of the transport units 51, 52, 53, 54, 55.

Further, of the five transport units, the first
The transport unit 51 is disposed near the exit of each of the paper magazines 3, 3, and transfers the photographic paper P drawn out of each of the paper magazines 3, 3 and cut into a predetermined size to the image forming apparatus 4 and the second paper magazine. The transport unit 52 is transported to the exposure unit 21 provided therein.

Further, in the first transport unit 51, as shown in FIG. 3, there is provided a width regulating guide 10 for regulating the widthwise movement of the photographic paper P to be transported in the transport path. Reference numeral 10 allows the photographic paper P to be transported to a predetermined position of the second transport unit 52 in the exposure section 21.

The second transport unit 52 is disposed downstream of the first transport unit 51 and has a
The transfer path is located on the optical axis 41 of the laser light emitted from the photographic paper P, and the photographic paper P is line-exposed to the image while the photographic paper P is being transferred.

The third transport unit 53 is disposed on the outlet side of the second transport unit 52, the fourth transport unit 54 is disposed downstream of the third transport unit 53 in the transport direction, and the fifth transport unit 55 is The photographic paper P is disposed downstream of the fourth transport unit 54 in the transport direction, and transports the photographic paper P to a developing unit (not shown).

In the printing unit 2, image information read from each frame of the developed film by a scanner (not shown) is recorded in the main control unit 6, and the main control unit 6 transmits the image information to the image forming control unit 7. Is scanned by the laser beam of the image forming apparatus 4 under the control of the image forming control apparatus 7, and the image data is printed on the printing paper P.

A main controller 6 mounted on the photographic processor
Is constituted by a computer, and the image forming control device 7 is constituted by a unit in which a large number of control boards are provided. As a control board of the image forming control device 7, for example, a power supply board, a laser control board,
A laser driver board for moving the dimming filter, a polygon driver board for moving the polygon mirror, and a laser signal processor board for adjusting the intensity of the laser light are installed.

The control board and each device of the image forming apparatus 4 are connected by wiring.

In the photographic processor described above, the printing paper P is pulled out of the paper magazines 3 and 3 in the printing processing unit 2 and cut into a predetermined size.
The image is printed on the photographic paper P by the laser beam of the image forming apparatus 4 while the photographic paper P is transported by the transport roller pair 8 of 1, 52, 53, 54, 55, and then sent to a developing unit (not shown). Then, it is subjected to a development process, further dried in a drying processing section, and discharged from a print discharge section.

In the above configuration, in the present embodiment,
In the first transport unit 51 which is one of the transport mechanisms,
The plurality of rotationally driven transport roller pairs 8 can be individually pressed or released from each other, and the transport roller pairs 8 are transported while nipping and holding one sheet of photographic paper P by only one transport roller pair 8. Is controlled to be pressed or released.

To be more specific, referring to FIGS. 2 to 4, FIG. 4 shows four of the seven transport roller pairs 8 in the first transport unit 51, and the driving roller of the transport roller pair 8 Are the first drive roller 81a, the second drive roller 81b, the third drive roller 81c, and the fourth drive roller 81d from the upstream in the transport direction, and the driven rollers are the first driven roller 82a and the second driven roller 82b from the upstream in the transport direction. , A third driven roller 82c and a fourth driven roller 82d.

The four driving rollers are controlled so as to be rotationally driven by a roller driving motor (not shown) while the photographic printing paper P is being conveyed. When they are pressed, they rotate together. Note that the other transport roller pairs 8 (8e, 8f, 8g) in the first transport unit 51 have the same configuration, and a description thereof will be omitted.

A pressing / releasing mechanism 9 is provided in correspondence with each driven roller 82 for individually separating or pressing each driven roller 82 against each driving roller 81.

The pressing / releasing mechanism 9 includes bearings 91 provided at both ends of the rotation support shaft 83 of each driven roller 82, an L-shaped pressing / releasing arm 92 for pressing the bearing 91 in one direction, and a pressing / releasing mechanism. Move the arm 92 to the swing shaft 93
And a cam 94 for canceling the pressure contact, which swings around the center. The cams 94 for canceling the pressure contact are individually provided corresponding to the respective bearings 91.

The bearing 91 has a diameter smaller than the diameter of the driven roller 82 and is attached to the rotation support shaft 83 of the driven roller 82 with a predetermined gap between the bearing 91 and the driven roller 82.

Further, a pair of long guide members 95 for guiding the driven roller 82 in the direction of separating or pressing against the driving roller 81 are provided on both sides in the width direction of each driven roller 82. The member 95 has 7
A plurality of guide grooves 96 are provided so that the rotation support shafts 83 of the two driven rollers 82 can move in the pressing and separating directions, and the guide grooves 96 are open on the drive roller 81 side.

The rotation support shaft 83 is fitted into the guide groove 96 such that the guide member 95 is sandwiched between the driven roller 82 and the bearing 91.

Further, each bearing 91 and guide member 9
5, a coil spring 97 is provided to press the bearing 91 toward the drive roller 81, that is, in a direction in which the driven roller 82 is pressed against the drive roller 81.

The L-shaped pressure releasing arm 92 is pivotally supported at the center by a pivot shaft 93, one end of which is in contact with the bearing 91, and the other end of which is provided with a roller member 98. A spring 99 is provided between the pivot shaft 93 and the pressure release arm 92 so as to bias the pressure release arm 92 toward the drive roller 81, that is, in a direction in which the pressure release arm 92 pivots away from the bearing 91. are doing.

The pressure-releasing cam 94 is connected to the pressure-releasing arm 9.
The cam 94 is provided so as to be in contact with a roller member 98 attached to the driven roller 2, and is connected by a single drive shaft 90 to a press-contact release cam 94 that operates two bearings 91 provided on both sides in the width direction of the driven roller 82. , Each driven roller 82
Drive motors M1, M2, M3 provided corresponding to
By M4, each driven roller 82 is individually driven.

The drive motors M1, M2, M3, and M4 are composed of DC motors that can rotate forward and reverse, and the drive motors M1, M2, M3, and M4 each include a drive control circuit D1 that controls on / off of a switch. D2, D3, D4
And the drive control circuits D1, D2, D3, D4 are connected to the drive motors M1, M2 based on a control signal from the main controller 6.
2, M3 and M4 are controlled to be on / off.

Next, the drive control of the pressure-contact / pressure-release mechanism 9 will be described with reference to FIGS. When the photographic paper P pulled out from the paper magazines 3 and 3 and cut to a predetermined size is conveyed to the first conveyance unit 51, the photographic paper P is detected by an optical sensor (not shown). The input to the main controller 6 causes the main controller 6 to calculate a point in time at which each of the transport roller pairs 8 is reached, based on the number of rotations of a motor that drives each drive roller 81.

Then, the printing paper P is transferred to the first transport unit 51.
, The leading end of the photographic paper P is nipped by the first transport roller pair 8a on the most upstream side in the pressed state, and is transported to the second downstream transport roller pair 8b on the downstream side. At this time,
All of the transport roller pairs 8 of the first transport unit 51 are in a pressure contact state.

The state in which the pair of conveying rollers 8 is pressed against each other is, for example, the third driven roller 82c in FIG.
In the state of the driven roller 82d, the pressure-releasing cam 9
4 is a roller member 98 of the pressure-releasing arm 92 having a small diameter portion.
And the pressure release arm 92 is in contact with the spring 9.
At 9, the roller member 98 is in a state of being urged in a direction in which the roller member 98 comes into pressure contact with the pressure release cam 94.

The leading end of the photographic paper P in the transport direction is the first most upstream side.
The main control device 6 releases the press-contact of the upstream first convey roller pair 8a when it reaches the press-contact second convey roller pair 8b provided on the next downstream side from the convey roller pair 8a.
Outputs a signal to the first drive control circuit D1.
A signal is output from the drive control circuit D1 to the first drive motor M1 for driving the press-contact release cam 94 provided on the first transport roller pair 8a, and the drive of the first drive motor M1 causes the press-contact release cam 94 to rotate 90 degrees. Then, the first driven roller 82a is brought into the pressure release state.

Since the first conveying roller pair 8a is in the pressure release state, the printing paper P is conveyed only by the second conveying roller pair 8b.

The state in which the press-contact of the transport roller pair 8 is released is, for example, the first driven roller 82a in FIG.
In the state of the second driven roller 82 b, the press-contact release cam 94 has a large diameter portion in contact with the roller member 98 of the press-release arm 92, and the press-release arm 92 receives the urging force of the spring 99. On the contrary, it swings around the swing shaft 93 in the direction of pressing the bearing 91. Then, the bearing 91 moves in a direction away from the driving roller 81 along the guide groove 96 against the urging force of the coil spring 97, and the first driven roller 82a and the second driven roller 82b
Is in the pressure release state.

Further, when the leading end of the printing paper P reaches the third feeding roller pair 8c from the second feeding roller pair 8b, the printing paper P moves from the first feeding roller pair 8a to the second feeding roller pair 8b. Similarly to the case, the press-contact of the second transport roller pair 8b is released, and the photographic paper P is transported only by the third transport roller pair 8c.

In the present embodiment, the press-contact release cam 94 is used as the press-contact / press-contact release mechanism 9 of the transport roller pair 8, but the rotation support shaft 83 of the driven roller 82 is pressed or released in the direction of press release using a solenoid. You may make it movable.

In this embodiment, the first transport unit 51 has been described, but the configuration of the present invention is different from that of the second transport unit 51.
The present invention is also applicable to each pair of transport rollers from the transport unit 52 to the fifth transport unit 55.

According to the present invention, even when photographic processing is performed on photographic paper P having a size larger than the general-purpose size, as shown in FIG. 2 and FIG. 8, the photographic paper P is conveyed while being nipped by only the pair of conveying rollers 8 without simultaneously nipping one sheet of photographic paper P, so that the photographic paper P can be properly conveyed without excessive force for pressing the photographic paper P. Photo paper P by force
Even if the photographic paper P meanders during the conveyance, the force increases in the meandering direction, and the photographic paper P does not strongly hit the width regulating guide 10 and is not damaged. In addition, the effect of restricting the movement in the width direction in the transport direction by the width regulating guide 10 is sufficiently exhibited to improve the quality.

When the photographic paper is conveyed while simultaneously nipping the photographic paper by a plurality of pairs of conveying rollers as in the prior art, in order to maintain the straight running performance of the photographic paper, the distance between each pair of conveying rollers is increased. Although the processing accuracy of the roller surface is required, according to the present invention, since the photographic paper P is controlled to be transported by the pair of transport roller pairs 8, the processing of the roller surface between all the transport roller pairs is performed. There is no need to consider accuracy.

[0051]

According to the first aspect of the present invention, there is provided a photographic processing machine provided with a transport mechanism for transporting a photographic paper of a predetermined size, wherein the transport mechanism comprises a plurality of rotationally driven transport roller pairs. And a width regulating guide for regulating the movement of the photographic paper in the width direction in the conveying path, and each conveying roller pair can be individually pressed or released, so that the photographic paper is pinched by only one conveying roller pair. Since the pressing and releasing of the pair of conveying rollers is controlled so as to convey the photographic paper, the photographic paper can be conveyed with an appropriate conveying force without excessive pressing force on the photographic paper. Even if the paper is meandering, the force in the meandering direction does not increase, and the photographic paper does not strongly hit the width regulating guide and is not damaged. The effect of restricting the movement was sufficiently exhibited can be improved quality.

According to a second aspect of the present invention, in the photographic processing machine according to the first aspect, the photographic printing paper is nipped by the pair of conveying rollers on the upstream side in the press-contact state, and is provided in the press-contact state provided on the next downstream side. When the leading end of the photographic paper in the transport direction reaches the transport roller pair, the configuration is such that the press-contact of the upstream transport roller pair is released, so that the photographic paper is reliably transferred to the next downstream transport roller pair. While the paper can be conveyed, the photographic paper can be conveyed with an appropriate conveying force without excessively pressing the photographic paper.

[Brief description of the drawings]

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

FIG. 2 is a schematic configuration diagram of a photographic processing machine according to the present invention as viewed from a side surface from a first transport unit to an exposure unit.

FIG. 3 is a schematic configuration diagram in plan view from a first transport unit to an exposure unit in the photographic processor according to the present invention.

FIG. 4 is an explanatory view of a main part showing a state in which a pair of conveying rollers is pressed and released in the first conveying unit.

FIG. 5 is a schematic configuration diagram of a transport mechanism up to an exposure unit in a conventional photographic processor, viewed from a side.

FIG. 6 is a schematic plan view of a transport mechanism up to an exposure unit in a conventional photographic processor, as viewed in plan.

[Explanation of symbols]

 P Photographic paper 51-55 Transport unit (transport mechanism) 8 Transport roller pair 10 Width control guide

Claims (2)

[Claims] In a photographic processor provided with a transport mechanism for transporting photographic paper of a predetermined size, the transport mechanism controls a plurality of rotationally driven transport roller pairs and a widthwise movement of the photographic paper in a transport path. In addition to a width regulation guide that regulates, each transport roller pair can be individually pressed or released, and the transport roller pair is pressed or released so that the photographic paper is transported while being pinched by only one transport roller pair. A photo processor. 2. The printing paper is nipped by the pair of conveying rollers on the upstream side in the pressed state, and when the leading end in the conveying direction of the printing paper reaches the pair of conveying rollers in the pressed state provided on the next downstream side, the upstream side. The photographic processor according to claim 1, wherein the pressing of the pair of conveying rollers is controlled to be released.