JPH01205143A - Photograph printing device - Google Patents

Abstract

PURPOSE:To improve the utilization factor of a space for forming a loop and to increase the number of degrees of freedom in operating by making a part of the space for forming 1st and 2nd accumulative loops in common. CONSTITUTION:A 1st ACL (accumulative loop) lA is formed with difference between an ejecting speed to a development processing device and the conveying speed of photographic paper in a printing process. When the amount of the 1st ACL lA reaches an upper limited value, the printing process is temporarily inhibited. On the contrary, when the amount of the 1st ACL lA decreases and reaches a lower limited value because the conveying speed of the photographic paper in the printing process is low, the photographic paper is cut by a cutter 67 and the photographic paper related to the 1st ACL lA formed till then is quickly ejected at a conveying speed several times as high as usual by a conveying roller 77, then a 2nd ACL lB is formed by opening a 2nd ACL guide plate 78. Thus, the space for forming a loop can be utilized without wastefulness and the number of degrees of freedom in operating can be increased.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a photographic printing device.

[Background of the invention]

Generally, when forming a photograph, it is necessary to print the image on photographic paper using a photographed and developed negative film, and a photographic printing apparatus is used for this purpose. The photographic paper from this photographic printing device is then developed by a photographic processing device to form a photograph.

FIG. 3 is an explanatory diagram showing the outline of an automatic photo processing system, in which 1 is a photo printing device, 2 is a developing processing section, 3 is a drying section, and 4 is a part of a cutter. A lamp L and a reflecting mirror R are provided, and the optical image of the negative film N formed by the light source lamp L is reflected by the reflecting mirror R, thereby conveying the photographic paper roll from the photographic paper roll storage section 5 and positioning it in the print area. The image of the negative film N is exposed onto the photographic paper P and printed.

This printed photographic paper P is then conveyed to pass through a development processing tank 6, a bleach-fixing processing tank 7, and a stabilization processing tank 8 consisting of three types in this order, which constitute the development processing section 2 of the photographic processing apparatus. A developing process is performed. The photographic paper P that has been developed in this way is then sent to the drying section 3 and dried by, for example, hot air.
is cut to form a photograph.

[Problem to be solved by the invention]

In the photo printing device of the automatic photo processing system as described above, the transport speed of the photographic paper P is set at the photo printing device 1.
and the development processing section 2 do not normally match, and even during a period when the printing process is suspended in the photographic printing apparatus 1 for exchanging photographic paper rolls, the development processing section 2 does not develop the photographic paper P that has already been printed. The printing process is carried out for several reasons, including the need to continue the process without interruption and the fact that it is desirable to be able to continue the print process even when conveyance of the photographic paper is interrupted in the development processing section 2. Form an accumulation loop on the completed photographic paper P,
It is necessary to separate the photographic printing device 1 and the processing section 2 from each other with respect to the flow of photographic paper.

The purpose of forming such an accumulation loop is to
The larger the size (loop length) is, the more preferable it is, but at the same time it requires a large space for forming the loop.

On the other hand, when forming a large accumulation loop, the following problems occur. In other words, when the paper cutter is operated in one part of the printer, conveyance of photographic paper in the next loft cannot be started until all of the photographic paper related to the accumulation loop that has already been formed at that point has been discharged. Therefore, the print processing operation cannot be resumed. In order to minimize such inconveniences, a second accumulation section is usually provided downstream of the first accumulation section, and the photographic paper accumulated in the first accumulation section is removed after the paper cutter is operated. is fed into the second accumulator at a speed several times the normal discharge speed. However, in this case, there is a problem in that a second accumulator section having approximately the same volume as the first accumulator section is required, which inevitably increases the size of the device.

[Purpose of the invention]

The present invention has been made based on the above circumstances, and by making a part of the first accumulation loop formation space and the second accumulation loop formation space common, the loop formation space can be improved. The efficiency of space utilization is high, and as a result, it does not require a large space, is therefore compact, and has virtually the same operational freedom as if the two accumulation loop formation spaces were formed independently. The object of the present invention is to provide a photographic printing device with a large size.

[Means for solving problems]

The photographic printing apparatus of the present invention includes: a conveyance roller that pinches and conveys photographic paper; a first accumulation loop forming guide mechanism that forms a first accumulation loop in the photographic paper on the upstream side of the conveyance roller; a second accumulating loop in the photographic paper downstream of the roller;
and a guide mechanism for forming an accumulation loop,
At least a part of the space occupied when the first accumulation loop is formed at its maximum is shared with the space occupied when the second accumulation loop is formed.

〔effect〕

According to such a configuration, a so-called double accumulation loop is formed on both the upstream and downstream sides of the conveyance roller, so that the processing section on the upstream side and the processing section on the downstream side are separated with respect to the flow of photographic paper. Since they can be completely and reliably separated and the space for these two accumulation loops is shared, the photographic paper associated with the accumulation loop in the first accumulation loop formation space can be immediately transferred to the second accumulation loop. It can be transferred to the space for forming an accumulation loop, so that printing processing can be restarted in a short time after cutting the photographic paper. Further, a new lot of photographic paper is gradually accumulated in the first accumulation loop forming space, while the photographic paper remaining in the second accumulation loop forming space is supplied to the developing processing device. As a result, the printing process can be continuously performed at least at a speed corresponding to the speed of the photographic paper relative to the developing processing device, and as a result, the utilization rate of the space for forming the loop can be increased. The degree of freedom in operating the device can be increased without increasing the size of the device.

〔Example〕

Examples of the present invention will be described below.

FIG. 1 is an explanatory diagram showing the configuration of a photographic printing apparatus according to an embodiment of the present invention, in which 10 is an outer box, L is a light source lamp, R is a reflector, 11 is a color filter, and 12 is a mirror tone novel. 13 is a negative carrier, 14 is a lens, and 15 is a dark shutter, in which the light image of the negative film N is projected onto the photographic paper P moving along the path shown by the chain line in the print area, as shown by the arrow A, and exposed. be exposed. T is an operation table.

In the photographic paper roll storage section 5 provided at the bottom of the device, 20 is a mounting cavity, 21 is a magazine table, and 22
denotes a photographic paper magazine, 23 denotes a photographic paper roll, and the magazine table 21 has a first
The magazine table 21 is supported so as to be freely movable in a direction perpendicular to the plane of the drawing, so that the magazine table 21 is received within the mounting cavity 20 so as to be horizontally removable. A photographic paper magazine 22 is removably supported on this magazine table 21, and inside this photographic paper magazine 22, a photographic paper roll 23 is arranged such that its rotation axis is in the running direction of the magazine table 21 (in the paper plane of FIG. 1). (direction perpendicular to).

Further, above the loading cavity 20, there is provided a photographic paper pull-out mechanism 28 having a pair of pull-out rollers 30, 31 for pulling out the photographic paper P from the photographic paper roll 23 loaded as described above. It is being Reference numeral 44 denotes a loop forming guide plate, and this loop forming guide plate 44 is arranged at a guide position indicated by a solid line located along a photographic paper path extending vertically, and at a loop β of the photographic paper P in a loop forming space 45. It is movable between an open position shown by a chain line in which it opens upward to allow the formation of a .

55 is a photographic paper drawer drive motor, which allows for
The shaft of the photographic paper roll 23 in the photographic paper magazine 22 and the feed roller 56 are driven, and one of the pull-out rollers 30, 31 connected to this feed roller 56 is driven.

60 is an upstream drive roller for driving photographic paper, and 61 is a downstream drive roller, which are driven by a common drive motor 6.
Timing bell) to be driven by 3) 70.
71 and pulleys 72 and 73.

A sub-exposure unit (character insertion mechanism) 65 is arranged at an upstream position of the print area, and a downstream drive roller 6
A back printer 66 is arranged at a downstream position of the back printer 66, and a cutter 67 is arranged at a downstream position of this back printer 66. Further, 81 to S4 are photographic paper detection sensors, Sl is a downstream position of the pull-out roller 30, 31, and S
2 and S3 are located upstream and downstream of the upstream drive roller 60, and S4 is located downstream of the cutter 67, respectively.

S5 is a sensor for detecting the loop 1 in the loop forming space 45, and 69 is a discharge roller.

FIG. 2 is an explanatory diagram of the transport system for photographic paper after passing through the print area, where 75 is a guide roller group, 1A is a first accumulation loop (referred to as 1st ACLJ), 7
6 is a guide plate for forming the first ACL (referred to as "first ACL guide plate"); 77 is a conveyance roller that pinches and conveys the photographic paper P; , is the second accumulation loop (“Second ACLJ
78 is a guide plate for forming the second ACL ("Second ACL
CL guide plate).

The guide roller group 75 guides the photographic paper P rising after passing through the cutter 67 by inverting it over an angle exceeding approximately 90 degrees. A plurality of small rollers are arranged along a convex curve.

The first ACL guide plate 7 attached to the rotation shaft 81
6, a fixing plate 82 is inserted through a gap 80 that serves as a photographic paper path.
A and 82B are fixed, and a plurality of edge rollers 83A located on the front side of the photographic paper P and a plurality of small rollers 83B located on the back side of the photographic paper P are rotatably provided on these, respectively. And this first ACL guide plate 7
6 is a relay position (indicated by a solid line) in an inactive state, a gap 80 located in the extending direction of the exit portion of the guide roller group 75 forms a relay path leading to the conveyance roller 77; When the 1ACL guide plate 76 rotates and descends to the open position shown by the chain line, the hanging first
ACL, f! A discharge path guide is formed. 85.86
is a loop guide roller.

On the downstream side of the conveyance roller 77, there is a second ACL located on the back side of the photographic paper P along a path that descends with a large inclination.
A guide plate 78 is provided on the rotation shaft 90, and this second
A fixed plate 91 fixed to the ACL guide plate 78 has a second ACL forming roller 87.8 located on the front side of the photographic paper P.
7 is rotatably provided. and the first AC
a first ACL β formed by operating the L guide plate 76;
and the space occupied when the second AC is formed at its maximum.
The second ACL β8 is formed when the L guide plate 78 is operated.
The spaces occupied by the two are shared, with at least a portion of the space overlapping each other. That is, since the first ACL β is formed below the first ACL guide plate 76, the second ACL guide plate 78 has a configuration that opens to the side of the space located below the first ACL guide plate 76, and the first ACL guide plate 78
A partition wall or a partition wall is not provided between the space for CLβ and the space for the second ACLf.

Furthermore, although not shown in the figure, the first ACLβ and the second
Sensors are provided to respectively detect the amounts of A CL j' n, for example encoders to calculate their accumulation amounts, and to monitor the amount of paper feed for the formation of the first ACLβ and the second ACLIB.

In the above configuration, the photographic paper P is pulled out by the pull-out rollers 30, 31 from the photographic paper roll 23 in the photographic paper magazine 22 installed in the photographic paper roll storage section 5, and then transferred to the feed roller 56 and the feed roller. The photographic paper is transported along the photographic paper path by the pressure roller 57, and is transported by the upstream drive roller 60.
Further, by the action of the loop-forming guide plate 44, a loop L of the photographic paper is formed in the loop-forming space 45, and the leading end of the photographic paper P is pressed against the downstream drive roller 61.
The paper is conveyed and mounted until it is pressed by the paper, and the preparation for continuous printing is completed.

Then, by driving the drive motor 63 intermittently, the photographic paper P is conveyed by a length corresponding to the specified frame size, and the intended printing process is performed on the portion of the photographic paper located in the print area. When one print process is completed, the drive motor 63 is driven to further transport the photographic paper P by one frame, and the next print process is performed.

At the same time as this printing process, sub-exposure of, for example, commemorative letters, etc., to be displayed on the surface of the photograph to be printed in the printing area is applied to the photographic paper portion corresponding to the frame that follows the frame located in the printing area. The image is printed by the sub-exposure unit 65.

If necessary, appropriate numbers or letters are written by the back printer 66 on the back side of the photographic paper portion corresponding to the frame preceding the frame positioned in the print area at the same time as the printing process.

Further, the photographic paper P that has been printed is discharged in the following manner. In other words, the leading edge of the photographic paper P is
The first ACL guide plate 76 is a relay position until it is pinched by the guide roller group 75 and the first ACL guide plate 76. Therefore, the leading edge of the photographic paper P sent by the downstream drive roller 61 is connected to the guide roller group 75 and the first ACL guide plate 76. Guide plate 76 and gap 80
It is guided by the small roller 83B located below and is pinched by the conveyance roller 77.

When the leading edge of the photographic paper P is pressed between the conveyance rollers 77 in this way, the conveyance rollers 77 are stopped, and the first ACL guide plate 76 is lowered to remove the small part located above the gap 80. The first ACLIA is formed by pressing down the photographic paper P by the roller 83A. At this time, it is preferable that the first ACL guide plate 76 is rotated in steps, for example, so as to be lowered according to the margin in the length of the photographic paper P. Also, the first ACLRA of a certain size
After the printing paper P is formed, the conveying roller 77 is driven to convey the photographic paper P and supply it to the developing processing device.

The first ACLAA is formed by the difference between the ejection speed to the development processing device and the conveyance speed of the photographic paper during printing processing, and this first ΔCLβ.

When the amount of paper reaches a preset amount (upper limit value), printing processing is temporarily prohibited.On the contrary, when the transport speed of photographic paper during printing processing is slow, the first ACLβ,
The amount decreases, and when the remaining amount reaches a preset amount (lower limit), the cutter 67 cuts the photographic paper. Also, cutter 6 may be used depending on the operator's convenience.
7 may also be operated. When the cutter 67 is operated in this way, the first AC
The photographic paper related to LIA is immediately discharged at a transport speed several times the normal speed, and the second ACL guide plate 78 is opened to move to the second ACLj! a is formed.

According to the above configuration, it is possible to form a double accumulation loop on both the upstream side and the downstream side of the conveyance roller 77, and moreover, the double accumulation loop can be shared with the second ΔCLA in the loop formation space. Of the part that
Resume the printing process after cutting the photographic paper by fully utilizing the remaining space, that is, the available space, depending on the size actually occupied by LRa, and form a first ACLA using the photographic paper. In addition, the utilization rate of the space for forming the loop can be greatly improved.

When the size of one of the two accumulation loops is secured, or when the formation of one loop is unnecessary, the other loop is enlarged until the remaining space capacity is filled. As a result, the space for loop formation is utilized without wastage, and therefore, the required processing can be continued until the total amount of accumulated loops fills the space for loop formation, increasing operational freedom. It can be made larger.

As described above, according to the present invention, double accumulation loops are formed both on the downstream side and the downstream side of the conveyance roller, so that the processing section on the upstream side and the processing section on the downstream side with respect to the flow of photographic paper are formed. Since the two accumulation loops can be completely and reliably separated, and the space for these two accumulation loops is shared, the utilization rate of the space for loop formation is high, and as a result, it is possible to increase the size of the device. Without,
It is possible to provide a photographic printing device that has a greater degree of freedom in operating the device, similar to when substantially two accumulation loop forming spaces are formed independently.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing the configuration of a photographic printing apparatus according to an embodiment of the present invention, FIG. 2 is an explanatory diagram of a transport system for photographic paper after passing through a printing area, and FIG. 3 is an automatic photographic processing system. FIG. 1...Photo printing device 2...Development processing section 3...Drying section 4...Cutter part 5...Photographic paper roll storage section L...Light source lamp R...Reflector N. ...Negative film P...Photographic paper 6...Development processing tank
7...Bleach-fixing treatment tank 8...Stabilization treatment tank
10...Outer box 11...Color filter 12
...Mirror tunnel 13...Negative carrier 1
4... Lens 15... Dark shutter T...
Operation table 20... Mounting cavity 21...
Magazine table 22... Photographic paper magazine 23.
...Photographic paper roll 28...Photographic paper drawer mechanism 30.
31... Pull-out roller 44... Guide plate for loop formation 45... Space for loop formation! ...Loop 55...
- Photographic paper drawer drive motor 56... Feed roller 57... Feed pressure roller 60... Upstream drive roller 61... Downstream drive roller 61 A, 61 B... Roller 61C.
...Pinching part 63...Drive morph 65...Character loading mechanism 66...Back printer 67...
Cutter 69...Discharge roller S1-S5...
・Sensors 70, 74...Timing belt 72.73...Pulley 75...Guide roller group JA, A...Accumulation loop 76...First ACL formation guide plate 77...Conveyance roller 78 ...Second ACL formation guide plate 80...Gap 81, 90...Rotation shaft 82A, 82B, 91...Fixing plate 83A,
83 B... Small rollers 85, 86... Loop guide roller 87... Second ACL forming roller hl Figure + 2 Figure 1 + 3 Figure \

Claims (1)

[Scope of Claims] 1) A conveyance roller that pinches and conveys photographic paper, a first accumulation loop forming guide mechanism that forms a first accumulation loop on photographic paper on the upstream side of this conveyance roller, and a second accumulation loop forming guide mechanism for forming a second accumulation loop on the photographic paper on the downstream side of the conveyance roller; A photographic printing device characterized in that at least a portion of the device is shared with the space occupied when the second accumulation loop is formed.