JPS602933A - Conveying method of long-sized photographic sensitive material - Google Patents

Abstract

PURPOSE:To eliminate the loss of a long-sized photographic sensitive material and to eliminate the need for a coarse adjustment after conveyance by sending the photographic sensitive material after exposure printing not immediately, but after size alteration. CONSTITUTION:The paper part A' of length (a) of an opening part 3' between paper masks 2' of long-sized print paper 1 is already exposed and printed, and not sent immediately after the exposure, but not moved until an exposure switch is turned on for the next time. When an exposure switch input showing that the printing side is unchanged is generated, the paper is sent to the left by D= (L-a/2) to form a punch hole at the front edge of the paper part A', and then sent by the remaining amount (a-D) to move to an unexposed part B'. When the size is varied, the masks 2' are moved without moving the paper 1'. In this case, they are moved symmetrically about the opening part 3' as shown by (b). When an exposure switch input is generated, the paper is sent to the left by (L-a/2) to form a punch hole at the front end part of the paper part B', and then sent by (a+b/2-L) to expose and print the paper part c' of the unexposed part.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an improvement in the method of transporting a long photographic material, particularly for exposing and printing a long print paper.

In general, it is possible to carry out quick exposure printing by transporting the print paper only when the print paper is exposed (in the case of exposure printing odor), but it is necessary to change the printing size according to the customer's request. In relation to this, the following problem arises, which will be explained in detail with reference to FIGS. 1 to 3.

First, as shown in Fig. 1, a long print paper 1 is
A punch hole for indicating the cutting position is automatically punched using the punch 4 equipped with unexposed paper of a length corresponding to the length a of the opening 3 of the paper mask 2.2, and further as described above. The unexposed paper part B is automatically conveyed to the left in FIG. 1 by a length a or a slightly longer distance, and as shown in FIG.
It reaches the position of the opening 3 at .degree. 2 and stops in this state until the next exposure/printing. And the printing is from size a to b (a
> When changing to b), first punch a punch hole for indicating the cut position in the rear end 5 of the paper part A in Fig. 3, and then move the paper mask 2゜2 to the state shown in Fig. 3. When printing, the size is changed, but in this case, the punch hole for indicating the exposure/cut position is set up in the part marked 100, and the paper is automatically conveyed by length b and then stopped. For this reason, there was a drawback that print paper was lost.

In addition, when changing the printing size from 'tb to 2 (a, > b), in order to avoid the exposure printing problem,
Manual fine-tuning was necessary.

In view of the current situation, the present invention has been developed to change the size of a long photosensitive material during exposure printing, without immediately transporting the long photosensitive material after exposure and printing before changing the size. By carrying out printing according to the size before and after the size change, and performing exposure printing, there is no loss of long photographic material, and there is no need to make fine adjustments after transport, and printing can be carried out according to the size. By making it possible to provide a method for conveying a long photographic material that can be changed, the present invention will be described in detail below with reference to FIG. 4 and subsequent embodiments. 4 to 7 showing an embodiment, 1' is a long print paper, 2', 2'U paper mask, 4' is paper mask 2', opening 3' of 2' The punch is fixed at a distance L from the center of the paper mask 2' so that its position does not change due to movement of the paper masks 2', 2'.

First, in FIG. 4, in the long print paper 1', the opening 3' between the paper masks 2', 2/:
A portion of paper A' having a length a located at the VC is a paper that has already been exposed and printed, and after the exposure and printing is completed, it is immediately conveyed and kept at a standstill at the exposure and printing position until the next exposure switch is turned on. be. In this state, the paper is conveyed for printing, stopped at that position, and the punch 4' punches seven punch holes at the tip of a part of the paper, and then the remaining paper (a-DI is conveyed to the left, It is stopped at that position, and the unexposed part B' of the paper is exposed and printed to complete the series of operations.

If you want to change the printing size from the state shown in Figure 5, move the paper mask 2', 2't: at that position without transporting the print paper 1'. 27 and 2' are moved symmetrically with the same length around the exposure optical axis (the center of the aperture 3'), and the sixth
As shown in the figure, the length of the mask opening 3' is b. Next, when the exposure switch is turned on, the print paper is first conveyed to the left (La), and part of the paper B
Since a punch hole is drilled at the tip of ' and the total conveyance amount is 2 + 2, (: 10 - (L - 1) = (a 0 - L l only needs to be conveyed), 2 Mask opening 3 Exposure printing is performed on the unexposed paper part C' which has reached the size C', and the series of operations is completed. In this way, printing is carried out by conveying a predetermined amount and exposing and printing after changing the size, so that the printing paper is No loss occurs, and the necessary factors are measured as necessary for fine adjustment after conveyance, and the above-mentioned conveyance amount is calculated using a computer etc. based on the stiffness of the bar. If you control the pulse motor 4I, it will automatically move to the desired position.
It becomes possible to transport IC mainly accurately.

Next, in FIGS. 8 to 11 showing other embodiments of the present invention, 1" is a long print paper, 2", 2"
4" is a paper mask, 4" is a printed sheet. First, in FIG. , as well as in Figure 4, after exposure and printing,
In this state, if you turn on the exposure switch without changing the printing size, a punch hole will be created at the rear end of part A' of the paper in Fig. 9. The paper mask 2" is automatically punched and automatically conveyed roughly to the left by a length a.
The unexposed part of the paper that has reached the position of the opening 3 of 2" n//vc is exposed and printed, and the series of operations is completed.

When changing the printing size from the state shown in Figure 9,
Without transporting the print paper 1, a punch hole is first punched in the rear end of the paper part A'' at that position, and the paper masks 2'' and 2''i are moved to open the mask as shown in FIG. Change the lengths ia to b&c of part 3. Next, when the exposure switch is turned on, the punch hole is not punched (-L+-!2-+) and the paper is conveyed in the left direction, and the paper mask 2τ2" is Opening fl
The unexposed paper portion C'' that has reached the position s3'' is exposed and printed, and the series of operations is completed. In this case, it is possible to obtain the same effect as in the above-mentioned embodiment with only one conveyance.

In each of the above-mentioned embodiments, a borderless case was described in which the exposed and printed screen and both ends of the screen were in close contact with each other, but it is also possible to transport the screen by a slightly longer distance to form a quiz border. As is clear from the above description, according to the present invention, the long photographic material is not transported immediately after exposure and printing, and the printing is changed after the size is changed. The pieces were transported according to the size of the front and back, and were exposed and printed.
There is no loss of long photosensitive materials, and the printing size can be changed without the need for fine adjustments after transportation.
In particular, if you measure factors such as the amount of change when changing the size, use this to calculate the amount to be conveyed using a computer, etc., and control the conveyance drive unit, it will be conveyed accurately to a predetermined position. It has excellent practical effects, such as being able to perform various functions.

[Brief explanation of the drawing]

FIGS. 1 to 3 are explanatory diagrams showing a conventional transport method for exposure and printing, and FIGS. 4 to 7 are explanatory diagrams showing an embodiment of the transport method for exposure and printing in the present invention. 8 to 11 are explanatory diagrams showing other embodiments of the present invention. 1, 1', 1" Niblint paper 2, 2', 2": Paper mask 3, 3', 3": Opening 4.4', 4": Bonchi No. 8 Drawing rate 10 Nikka La figure

Claims (1)

[Claims] During exposure printing on long photosensitive materials, the printing is done when changing the size, and the exposure printing before changing the size is used after the exposure printing.
A method for conveying a long photographic material 0, characterized in that printing is carried out according to the size before and after the size change, without immediately conveying the long photographic material, and exposure printing is carried out.