JPH0273354A - Method for cutting splice part of photosensitive material - Google Patents

Abstract

PURPOSE:To prevent the occurrence of jamming in a conveying system by cutting the splice part of a photosensitive material within the range of the conveying allowable length of the conveying system on and after a cutter and simultaneously cutting it in a cut sheet shaped rectangular without cutting it at a punching hole due to a margin width. CONSTITUTION:When the photosensitive material 11 is set at an exposure position, a distance L1 between the tip of a punched hole H for detecting the splice part W and the cutter 23 and the length L2 of the hole H are detected by a detecting means 30. Based on the detected result, it is decided whether the cut expected length (L1-A) and (L2-A+B) obtained by considering the cut margin width A and B are longer than conveying allowable minimum length (Lmin) or not. When they are longer, only the length as long as the cut expected length is conveyed and cut. When they are shorter, the length (L1+L2+B) obtained by adding the cut expected length is regarded as the cut expected length and it is decided whether the cut expected length is longer than the conveying allowable minimum length (Lmin) or not. Then, when it is longer, it is regarded as the cut expected length, and the length (L1+L2+B+C) obtained by adding the cut margin width C of the slice part W is regarded as the cut margin width when it is shorter. Then, the length as long as the length (L1+L2+B+C) is conveyed and cut. Thus, the jamming in the conveying system can be prevented from occurring.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for cutting a splice portion used in a printer processor, and more particularly, to a method for cutting a splice portion of a photosensitive material for removing a joint portion of the photosensitive material. Regarding cutting method.

[Conventional technology]

A printer processor pulls out a roll of photosensitive material one frame at a time, prints and exposes a photographic image thereon, and sends the exposed photosensitive material to a processor for development. In these types of printer processors, there are two types that perform printing exposure and development processing continuously, dry processing after the development processing, and then cut each frame with a cutter, and another type that performs printing exposure and then cuts each frame one by one before transporting the sheet. There is also a type that requires development processing.

Conventional printer processors use a photosensitive material wound into a roll, but this photosensitive material is formed into a longer band by joining together a plurality of strips. In a photosensitive material made of a plurality of strips joined together, the upstream portion of the joint is located at the exposure position so that photographic images, etc., are not printed onto the joint. A punched hole for detecting a bonded portion is formed for detecting the bonded portion when the bonded portion is located at the position of the bonded portion.

FIG. 3 shows the shape and dimensions of this punched hole H and the specifications of the dimensions of the joint portion. The length X in the color paper feeding direction of the joint W of the photosensitive material, for example, the color paper 11, is 7 or 8.5 fins, joining tape, etc. when the edges of the color papers 11 to be joined are overlapped and ultrasonically welded. The standard is 38±0.3 mm when butt-jointed. Further, the distance Y from the center of the joint W to the rear end of the punched hole H is set to a standard of 25 to 104@plow. Also, the length Z of the punched hole H in the color paper feeding direction
The standard is 75±20 fins.

In addition, the two-dot chain line in the figure indicates, as will be explained in detail later,
The planned cutting line Sl, 32.33 in the present invention is shown.

[Problem to be solved by the invention]

As described above, when a photosensitive material with a punched hole for detecting the bonding is formed in the bonded portion and is subjected to photoprinting processing with a printer processor having the sheet conveyance type processor, the punched hole is detected. Unless some means is taken to control the cutter based on this, there is a risk that the cutter will be cut at the punched hole for detecting the joint. In this case, the punched hole causes the tip of the cut photosensitive material to split into two at the punched hole, which may cause the photosensitive material to become clogged inside the processor, or so-called jamming. There is a problem. Additionally, if the joint is cut, the joint may come undone depending on the position of the cut, and in this case, there is also the problem that jamming may occur within the processor. .

On the other hand, when the joint is located at the exposure position of the printer, it may be possible to cut off only the joint, take it out of the photosensitive material transport path, and dispose of it.
In this case, in addition to means for detecting and cutting out the joined portion, a means for discarding it is also required, which poses a problem in that the structure becomes complicated.

The present invention has been made to solve the above problems, and even when photosensitive materials bonded in the longitudinal direction are used in a printer processor having a sheet conveying type processor, it is possible to efficiently cut the photosensitive materials and transfer them to the processor. It is an object of the present invention to provide a method for cutting a splice portion of a photosensitive material in which jamming or the like does not occur inside the photosensitive material.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a cutter and a tip of a punched hole for joint detection formed in an upstream portion adjacent to a joint of the photosensitive material when the photosensitive material is placed at an exposure position. When Ll is the distance from
When n≦(Ll-A) and L1n≦(L2+A+B) (A and B indicate cutting margins provided at the front and rear ends of the punched hole), the photosensitive material is fed fi (Ll-A).
, and perform the first cutting with the cutter,
Next, feed the photosensitive material by the feed amount (L2+A+B) and
Cut the photosensitive material for the second time, and then cut the photosensitive material at the joint portion C
Then, the third cutting is performed by feeding Lmin≦(Ll−
A), and in the case of Lmin > (L2+A+B),
Feed the photosensitive material @ (L 1-A) and make the first cut with the cutter, then feed the photosensitive material by I (L
2 + A, + B + C) and perform the second cutting.
Lmin>(L1-A), and Lmin≦(L1
+L2+B), the feed amount of the photosensitive material is (L1+L2
+B) and make the first cut with the cutter.
Next, the second cutting is performed by feeding the photosensitive material by the joint cutting allowance C, and when Ln+in > (L 1-A) and L+win > (Ll+L2+B), the photosensitive material is fed by the amount of fit (LL+L2+B+c). It is designed so that the cutting can be carried out by sending the paper.

[Effect]

When the photosensitive material is set at the exposure position, the detection means detects the distance L1 between the cutter and the tip of the punched hole for joint detection, and the length L2 of the punched hole in the photosensitive material feeding direction. Based on this detection result, the control means controls the distance L
L and length L2, the planned cutting length (L1-
A).

It is determined whether (L2-A+B) is larger than the minimum allowable transport length I, min of the transport system after the cutter.

If it is determined that the cutting length is too large, these scheduled cutting lengths are adopted, and the photosensitive material is fed and cut by this scheduled cutting length. Furthermore, if it is determined that the two planned cutting lengths (Ll-A), (L2+
A+B) is added (L1+L2+B) as the planned cutting length, and it is determined whether this is larger than the processor's allowable minimum transport length Lmin. If it is determined that the cut length is large, these planned cutting lengths are adopted. Furthermore, if this planned cutting length (L1+L2+8) is determined to be smaller than Lmin, a joint cutting allowance C (however, C<(Lmax - Lmin)) is added to this (L1+L2+B+C). is adopted as the new cutting allowance. In this way, the bonded portion of the photosensitive material is adjusted to the allowable conveyance length of the conveyance system after the cutter (Lmin5L≦Lmax
) and is cut into a rectangular cut sheet that is not cut at the punched hole due to allowances A and B, resulting in jamming in the conveyance system after the cutter. can be prevented.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

As shown in FIG. 1, a roll of photosensitive material, such as color paper 11, stored in a magazine 10 is
The guide roller 12 and the pair of conveyor rollers 13 and 14 pull out the length of one frame at a time and place it at the exposure position. At the exposure position, a pressure plate 16 for holding the color paper 11 flat and a photographic paper mask 17 are provided, and an exposure station 18 is formed by these.

An exposure section 20 for printing and exposing a photographic image to the color paper 11 is attached opposite to the color paper 11 of the exposure station 18.

The exposure section 20 is composed of a white light source, a film carrier, a printing lens, a shutter, a color filter for adjusting the light quality of the printing light, etc., which are well known and are omitted in the drawings. Note that an exposure device such as a CRT for exposure can also be used as the exposure section 20.

The pair of transport rollers 13 and 14 are connected to the exposure station 18.
They are arranged at the color paper input side and output side positions of the color paper, respectively. These exit and entry conveyor roller pairs 13.1
4 are linked by synchronizing means such as a timing belt, and are rotationally driven by a pulse motor 21.

At the output side position of the color paper 11 of the output side conveyance roller pair 14, a cutter 23 is installed adjacent to this conveyance roller pair 14.
is located. This cutter 23 has a cutter drive unit 24
The color paper 11 exposed by the exposure section 20 is cut frame by frame. The color paper 11 cut into l frames is sent to the processor 25 side by a pair of transport rollers 26 and 27, and drawn into the processor 25 by a pair of transport rollers 28 of the processor 25. Thereafter, the sheet is fed a within the processor 25 and subjected to development processing.

Distance MP1 between the cutter 23 and the pair of conveyance rollers 26, distance P2 between each conveyance roller 26, 27, 28. P3 is set larger than the minimum allowable conveyance length L min of the conveyance system after the cutter 23. In addition, the cutter 23 and the processor 25
The distance 411 P 4 from the pair of conveyance rollers 28 on the side is set smaller than the maximum allowable conveyance length Lmax of the conveyance system after the cutter 23 .

Further, a hole detection sensor 30 for detecting a punched hole H for detecting a joint portion of the color paper 11 is installed between the guide roller 12 and the input side conveyance roller pair 13 in the vicinity of the color paper conveyance path. It is being As the hole detection sensor 30, an optical detection sensor that does not have as much influence as exposing the color paper or a mechanical sensor such as a microswitch that mechanically detects the hole is used. The detection signal of this hole detection sensor 30 is transmitted to an L1 detection section 31 that detects the distance L1 from the cutter 23 to the tip of the punched hole H.
Then, it is sent to the L2 detection section 32 which detects the length L2 of the punched hole H in the color paper feeding direction.

The L1 detection section 31 and the L2 detection section 32 are connected to the pulse motor 2.
It consists of a pulse counter that counts the number of drive pulses. The L1 detection unit 31 detects the color paper 11
The color paper 11 is reset by a cut signal to cut the color paper 11 by counting the number of driving pulses of the pulse motor 21 from immediately after the cut signal is input until the light incident end detection signal of the hole detection sensor 30 is input. ! This is to detect the distance LL from the cutter 23 to the tip of the punched hole H when it is inserted into the optical station 18.

In addition, the L2 detector 32 is reset by a cut signal like the L1 detector 31, and pulses from the time when the light incident end detection signal of the hole detection sensor 30 is input until the time when the human rear end detection signal is input. By counting the number of driving pulses of the motor 21, the length L2 of the punched hole H in the color paper feeding direction can be determined.
The purpose is to detect

The distance data Ll and L2 from these Ll and L2 detection units 31 and 32 are input to the controller 35. The controller 35 is composed of a microcomputer, and based on the distance data from these detection units 31 and 32, it rotates the motor 21 via the driver 36 and operates the cutter 23 via the cutter drive unit 24. In addition to controlling the exposure section 20 and the processor 25, the exposure section 20 and the processor 25 are also controlled.

Specifically, according to the processing procedure shown in Figure 2,
The motor 21 and cutter 23 are controlled based on the distance data from the L1 detection section 31 and the L2 detection section 32. First of all,
The motor 21 is rotated to pull out one frame of the color paper 11 by the pair of transport rollers 13 and 14, and set it on the exposure station 18. At the time of this setting, in step 100, the hole detection sensor 30 and the Ll and L2 detection parts 31, 32 are activated, and the cutter 23 punches the hole H.
, and the length L2 of the punched hole H in the color paper feeding direction.

Next, the process proceeds to step 102, in which it is determined whether or not the distances 2 and 1 from the cutter 23 to the tip of the punched hole H are smaller than the frame feed length of one frame. If Ll is greater than or equal to L (in fact, Ll is the same as L), it is determined that no bonding portion is located in the exposure station 18, and the process returns to step 100, which is followed by step 100.10.
Repeat step 2.

Further, if it is determined in step 102 that Ll is smaller than L, that is, if it is determined that the bonding portion is located at the exposure station 18, step 104
Next, the joint portion is cut. Step 1
In 04, the first scheduled cutting length Ml (-Ll-
It is determined whether A) is greater than or equal to the minimum allowable length Lmin for processor acceptance.

If it is determined in step 104 that Ml is greater than or equal to L lllin, the process proceeds to step 106, where it is determined whether or not the next scheduled second cutting length M2 (=L2+A+B) is greater than or equal to Lmin. Note that A and B are cutting allowances provided at the front and rear ends of the punched hole H, and in this embodiment, A=10+m and B=3 mm.

In addition, if the determination in step 104 is negative, that is, the first
If it is determined that the scheduled cutting length Ml is smaller than the processor acceptable minimum length Lmin, step 1
Proceed to step 08 and calculate the new planned cutting length M3 (=M1+M2
=Ll+L2+B) is greater than or equal to Lmin.

Based on the determination results of steps 104, 106, and 108, the following 4B-like scheduled cutting lengths (11 to (4)) are adopted, and the joint portion is cut based on this.

(1) When Lmin 5M1 and ■, min≦M2 In step 110, as shown in FIG. I do. Next, in step 112, the color paper 11 is fed M2 and is cut a second time at the second cutting line S2. next,
In step 114, the color paper 11 is fed a predetermined cutting length C and then cut for the third time. Predetermined cutting length C
can be determined by the following equation so that the third cutting line S3 does not overlap the joint W of the color paper 11.

In this example, a margin of 18 mm is taken, and C is 13 mm.
It has eight fins. Steps 110, 112 and 114 above
By this process, the joint portion of the color paper 11 can be cut into three cut sheets.

(When 21Lmin≦M1 and Lmin>M2, in step 120, the color paper 11 is fed Ml and the cutter 23 cuts the color paper 11 for the first time at the first cutting line S1.Next, in step 122, the color paper 11 is cut for the first time at the first cutting line S1. 11 by M2+C, and a second cut is made at the third cutting line S3.

Through the processing in steps 120 and 122, the joined portion of the color paper 11 can be cut into two cut sheets.

(3) I, min > M 1 and L 1w1n
When ≦M3, in step 130, the color paper 11 is fed by M3 and the cutter 23 performs the first cutting at the second cutting line S2. Next, in step 132, the color paper 11 is fed a predetermined cutting length C, and the third
A second cut is made at the cutting line S3. Through the processing in steps 130 and 132, the joined portion of the color paper 11 can be cut into two cut sheets.

(When 41Lmin > M1% and LIIIin > M2, in step 140, the color paper 11 is
After feeding 10 G, the cutter 23 makes the first cut at the third cutting line S3. Through the processing in step 140, the joint portion of the color paper 11 can be cut into one cut sheet.

In addition, in the above embodiment, the detection of Ll and L2 is as follows:
Pulse motor 2 that rotationally drives the transport roller pair 13 and 14
Although this was carried out by detecting the number of drive pulses of 1 with each detection unit 31 and 32, the present invention is not limited to this.
Ll and L2 may be detected by other detection means.

〔Effect of the invention〕

As explained above, according to the present invention, when the photosensitive material is set at the exposure position, the distance L1 between the tip of the punched hole for joint detection and the cutter, and the length of the punched hole in the photosensitive material feeding direction. Detect L2 and based on this detection result,
It is determined whether the scheduled cutting lengths Ml and M2, which take into account the cutting allowances A and B for the distance L1 and lengths I and 2, are larger than the minimum allowable conveyance length Lsin after the cutter, and based on this, L If the planned cutting lengths Ml and M2 are larger than lll1n, these planned cutting lengths Ml and M2 are adopted, and if they are smaller, the lengths of M1+M2 and LIIIin are compared and the allowable conveyance of the processor is always determined. Minimum length
The bonded portion of the photosensitive material can be cut so that the length is longer than 1n.

Therefore, the cut sheet whose joint portion is cut in the processor does not fall off, and jamming in the ζ processor can be prevented. In addition, considering the distance L1 between the punched hole for detecting the joint and the cutter, and the length 2 of the punched hole in the photosensitive material feeding direction, the cutting allowances A and B are calculated.
Since l-A and L20B are the planned cutting lengths Ml and M2, the cutting line is deviated from the punched hole by these cutting margins A and B, so the cutting will not occur at the punched hole. Furthermore, since the joint portion cutting allowance C is provided so that the cutting line is not located at the joint portion, there is no chance of cutting at the joint portion. Therefore, since a bifurcated cut sheet or a plurality of small cut sheets are not formed when cutting with a punched hole, it is possible to prevent jamming within the processor.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing a printer processor embodying the present invention. FIG. 2 is a flowchart showing the disconnection processing procedure of the controller in the same embodiment. Figures 3(a) and (bl are a side view and a plan view showing the shape, dimensions, and positional relationship with the cutter of the punched hole formed in the joint part of the color paper. H... joint part Detection punching hole 31, S2.S3... Cutting line W... Joint parts A, B... Cutting margin C of punched hole... Cutting margin Ll, L2 of joint part... Detection Length Ml, M2.M3...Planned cutting length 11...Color paper 13.14.26-28...23...Cutter 30...Hole detection sensor 31...L1 detection section 32. ...L2 detection unit 35...controller. - Conveyance roller pair

Claims (1)

[Claims] (1) The cutter transfers the photosensitive material that has been printed and exposed by the printer to the allowable transport length range (Lm) of the transport system after the cutter.
At the splice part of the printer processor, which cuts each frame one by one so that in < L < L max) and sends it to the processor, when the photosensitive material is set at the exposure position, the upstream side adjacent to the joint of the photosensitive material When the distance between the tip of a punched hole for detecting a joint formed in the part and the cutter is L1, and the length of the punched hole in the photosensitive material feeding direction is L2, Lmin≦(L1-A), And Lmin≦(L2+A+
In the case of B) (A and B indicate cutting margins provided at the leading and trailing ends of the punched hole), the photosensitive material is fed by the feed amount (L1-A) and the cutter performs the first cutting. , then feed the photosensitive material by the amount (L
2+A+B) to perform the second cutting, then feed the photosensitive material by the joint cutting margin C and perform the third cutting, so that Lmin≦(L1-A) and Lmin>(L2+A+
In the case of B), the photosensitive material is fed by the feed amount (L1-A) and the cutter performs the first cut, and then the photosensitive material is fed by the feed amount (L2 +
A+B+C) is sent for the second cutting, and Lmin>(L1-A) and Lmin≦(L1+L2
+B), the photosensitive material is fed by the feed amount (L1+L2+B) and the first cut is made by the cutter, then the photosensitive material is fed by the joint cutting margin C and the second cut is made, Lmin. >(L1-A), and Lmin>(L1+L2
+B), a method for cutting a splice portion of a photosensitive material, characterized in that the photosensitive material is fed by a feed amount (L1+L2+B+C) to perform the cutting.