JPH04126242U - photo printing equipment - Google Patents

Abstract

(57) [Summary] [Purpose] To increase the yield of photographic paper in a photoprinting device that pulls out a predetermined amount of photographic paper from a long scroll of photographic paper and exposes and prints on the photographic paper that has been cut to measure. The purpose is to eliminate the cause of jams caused by strips clogging in the conveyance path. [Structure] A sensor 15 as a trailing edge detection means, a cutter 21, and a pair of conveying rollers 22, 23, 24 are located between the outlet 14 of the magazine 11 containing the photographic paper scroll 13a and the exposure position 27a.
A suction belt 27 is placed between the roller pair 24 and another roller pair 25 via a tension roller 26.
The driving of the belt 27 is controlled to feed the photographic paper 13, which has been previously cut to a length, to the correct exposure position 27a. The distance Y between each pair of rollers 22, 23, 24 is configured to be shorter than the length a of the minimum size, and the distance X between the rear edge detection sensor 15 and the cutter 21 is set to the length a of the minimum size. When the sensor 15 detects a terminal, the cutter 21 is not operated and the photographic paper is fed.

Description

[Detailed explanation of the idea]

0001

[Industrial application field]

This invention is based on a photographic printer that has a predetermined length of photographic paper at the rear end of the long roll. Store the photographic paper by making sure to use it securely and not using anything shorter than the specified length. This paper relates to a technology that increases the printing rate and enables trouble-free printing.

0002

[Conventional technology]

A photo printing device that prints on longer roll color photographic paper than the conventional 135 type negative. In this case, a sensor detects the winding diameter close to the final winding diameter at the trailing end of the long photographic paper. Or, place the sensor far away from the measuring scale cutter position so that the rear edge of the photographic paper The sensor detects that Reloading the roll and restarting it.

0003

[Problem that the idea aims to solve]

The detection means of the terminal part of such photographic paper scrolls can still be used normally. Several sheets of expensive photographic paper are inevitably wasted. In order to avoid this, you can use photographic paper as much as possible without wasting it. There is a risk of handing over printed prints to customers, or If the end strip of the paper is cut and enters the conveyance path, it becomes impossible to feed it and the conveyance path becomes clogged. Sometimes.

0004 This invention solves these conventional problems and allows the terminal end of the photographic paper scroll to be It uses up to To provide a photo printing device which eliminates the obstruction of conveyance path by strips smaller than Make it the objective of the assignment.

[0005]

[Means to solve the problem]

This objective is achieved by the following technical means:

[0006] Printing is now done by loading a long scroll of photographic paper of a specified width. In a photographic printer, the trailing edge of photographic paper pulled out from the scroll loading section A detecting means, a measuring means for cutting the photographic paper into a predetermined length, and a cutter. and a distance between the detection means and the cutter is the minimum value of the measuring length cutting length. , and the feeding means is provided with the measuring cutter on the conveyance path. Consisting of means including at least a pair of conveyor rollers provided at an interval smaller than the minimum length and the cutter is not operated when the detection means detects the trailing edge. A photo printing device characterized in that the photograph is sent in this manner.

[0007]

【Example】

One embodiment of the present invention will be described with reference to the schematic front sectional view of FIG.

[0008] The scroll 13a of the photographic paper 13 wound around the core 12 is stored in the magazine 11 and the photographic paper is 13 is fed out from the outlet 14 with its tip held between the pair of conveyor rollers 22 and 23, and is delivered to the desired location. The length of the required size is sent and the cutter 21 cuts it to the length of each set size. It will be done. Each photographic paper 13, which has been measured to the required length in this way, is placed on a suction belt. It is carried to the exposure position 27a on 27, and is exposed by the exposure lamp 32 and the reflective shade 33. The negative screen of the negative mounting table 31 that is uniformly illuminated is exposed on the photographic paper 13 at the exposure position 27a. It is designed to illuminate and form an image. The suction belt 27 is connected to roller pairs 24 and 25 at both ends. and is wound around an intermediate tension roller 26, and a large number of suctions are provided on the belt surface. A hole is drilled and suction is applied to the vacuum chamber inside the belt to measure the measurement. The flatness of the photographic paper 13 that has been cut is maintained, and the inside of the photographic paper 13 is aligned with the exposure optical axis. Positioned with their hearts aligned.

[0009] In this way, after the exposure is completed in the photo printing device 20, the conveyor roller pairs 41, 42, 43, 44, 45 and then transported to the development processing section 50, where it is subjected to immersion processing with processing liquid and drying. After drying, the prints are finished and collected.

0010 And between each of the adjacent conveying roller pairs 22, 23, 24 and 25, 41, 42, 43, 44, 45 The distance Y between them is set smaller than the minimum photographic paper length a.

[0011] In addition, a sensor for detecting the rear edge of photographic paper is installed at or near the photographic paper drawer opening 14. 15, and the distance between the sensor 15 and the cutter 21 is equal to the photographic paper measuring length. The length X is slightly longer than the minimum length a (minimum size length).

0012 We will discuss how each function arranged in this way operates.

[0013] The photographic paper scroll 13a of the magazine 11 is fed out by a pair of transport rollers 22, 23, and 24. The photographic paper 13 is repeatedly cut to a predetermined length from the cutter 21, which is the normal leading edge standby position. The paper is ejected and stopped, and the cutter 21 is activated to move one sheet of photographic paper toward the exposure position. A print that is cut, the process is repeated sequentially, and the print is positioned by stopping at the exposure position. Image exposure is made on the paper at any time. Position of optical axis center and photographic paper center at image exposure position For alignment, change the conveyance amount of the suction belt 27 according to the measuring amount for each size. It is adjustable.

[0014] The distance Y between the conveying rollers is smaller than the length a of the minimum size photographic paper. Because of this, the photographic paper that has been cut to the measurement must always be cut correctly, no matter what size it is. It will be transported properly.

[0015] Also, the rear end of the photographic paper scroll 13a is unwound from the core 12 and placed near the outlet 14. It passes through the sensor 15 provided as a trailing edge detection means and reaches the sensor 15. When detected, the cutter 21 is kept inoperative and transported. .

[0016] At that time, the last photographic paper size is longer than the length a of the minimum size, and It is almost shorter than the intended size. Therefore, the last photographic paper size is This eliminates the possibility of stagnation and blockages in the conveyance path due to insufficient feed in the middle of the conveyance path. Ru. If a blockage occurs during this process, it will become impossible for the photographic paper that has been reloaded to pass through, resulting in a jam. This will cause phenomena to occur.

[0017] Also, since the photographic paper at the end of the minimum size a will not be a small size, the minimum size Normal prints are always obtained when printing prints according to the size. . However, the length of the photographic paper at the end is the length of the measuring tape length a plus +α. Therefore, all you have to do is cut off the excess part after collecting it.

[0018] Next, the case of a size larger than the minimum size a will be described. In this case the last The length of the photographic paper at the tail is a+α, but the size of α is in the relationship 0<α<a, and the required size is It may be shorter than is. Therefore, no exposure corresponding to this is given, and It is then sent to the developing department and developed, but since no image is obtained, it is not delivered to the customer. In this case, the corresponding negative remains at the exposure position and is moved to the next new photographic paper screen. To deal with this problem, the measuring paper at the beginning of the roll is printed and exposed. be.

[0019] In this way, half-stripe strips of photographic paper are left in the transport path and the subsequent photographic paper is jammed. This eliminates the possibility of causing scratches or scratches, and furthermore, the last photographic paper is free from defects. It will be possible to process the image without resulting in a half-finished print.

[0020]

[Effect of the idea]

With this invention, printed products printed in irregular sizes become good quality products. This will prevent the product from falling into the hands of customers, etc., and will also reduce the chance of being cut to less than the minimum size. Eliminates jams and scratches by eliminating the trailing strip of photographic paper that gets caught. This eliminates the occurrence of color printing, and eliminates the wasteful consumption of expensive color photographic paper, resulting in improved yields. can now be used highly effectively.

[Brief explanation of drawings]

FIG. 1 is a front sectional view schematically showing an embodiment of the present invention.

[Explanation of symbols]

11... Magazine 12... Core 13... Photographic paper 13a... Photographic paper scroll 14... Outlet 15... Trailing edge detection means 20... Photo printing device 21... Cutter 22, 23, 24, 25, 41, 42, 43, 44 ,45...Transport roller pair 27...Suction belt

Claims (1)

[Scope of utility model registration request] 1. A photographic printing apparatus configured to print by loading a long scroll of photographic paper of a predetermined width, comprising means for detecting the trailing edge of the photographic paper pulled out from the scroll loading section; A cutter and a measuring paper feeding means for cutting the paper into a predetermined length are provided, and the distance between the detecting means and the cutter is set to be larger than the minimum value of the measuring length. and the feeding means includes means including at least a pair of conveying rollers provided on the conveying path at an interval smaller than the minimum value of the meter cutting length, and the detecting means detects the trailing edge. A photo printing device characterized in that the cutter is fed without being operated.