JPH04305639A - Photograph printing processor - Google Patents

Abstract

PURPOSE:To prevent a trouble that a photosensitive material such as a photographic paper is stuck to the guiding member of a carrying device. CONSTITUTION:In a photograph printing processor provided with the guiding member 20 which guides to carry the photosensitive material to a carrying path for the photosensitive material 1 such as the photographic paper, the surface of the guiding member 20 on which the photosensitive surface 1a of the photosensitive material slides has plural non-contact parts 30 which do not contact with the photosensitive material and which are uniformly distributed symmetrically in the advancing direction of the photosensitive material.

Description

[Detailed description of the invention]

0001

[Field of Industrial Application] The present invention relates to a photographic printing processing device such as an exposure/developing device for silver halide photography and a color copying device.
The present invention relates to a photographic printing processing apparatus that is equipped with a guide member that guides a photoreceptor such as photographic paper that is supplied to various parts for exposure, cutting, etc.

0002

[Prior Art] The above-mentioned photographic printing apparatus has an exposure section that exposes an image of a negative film onto photographic paper, a cutting section that cuts the photographic paper into a predetermined size, etc., arranged in a dark box-like case. . A magazine for storing and continuously supplying a roll of photographic paper is attached to the inlet of the case, and a delivery section for delivering the photographic paper to a fixing device or the like is provided at the outlet of the case. Photographic paper is sequentially supplied from inside the magazine to the exposure section, cutting section, and delivery section for predetermined processing.In order to supply the photographic paper to each of these sections, a guide is installed between these sections to guide the photographic paper. The members are arranged. The guide member is made of a mirror-polished stainless steel plate or the like, and is designed to prevent scratches on the photosensitive surface of the photographic paper even if it comes into contact with it.

By the way, a photosensitive emulsion is coated on the photosensitive surface of photographic paper, and when the photographic paper is supplied to each section, the photosensitive surface comes into sliding contact with a guide member. On the other hand, since a developing solution and an exposure solution are arranged inside the case, and the temperature is high due to heat generated by the light source during exposure, etc., the inside tends to become highly humid. Such high humidity conditions (for example, around 90% humidity)
In this case, the emulsion in the photographic paper softens and creates adhesive strength, so the photosensitive surface sticks to the guide member (especially noticeable on mirror-polished stainless steel plates), which can cause uneven feeding, jamming, or unevenness of the photographic paper. This may cause problems with smooth supply. For this reason, conventionally, electrostatic flocking, in which fibers are attached using static electricity, is applied to the surface of the guide member on the side in contact with the photosensitive surface to prevent the photographic paper from adhering to the guide member.

0004

However, in electrostatic flocking, the fibers are worn out or peeled off due to friction and resistance when the photographic paper runs, resulting in a lack of durability. Moreover, there is a problem in that the peeled fibers adhere to the photosensitive paper.

The present invention has been made in consideration of the above circumstances, and it is an object of the present invention to provide a photographic printing apparatus which has a simple structure and prevents a photoreceptor from sticking to a guide member.

[0006]

[Means for Solving the Problems] In order to achieve the above object, the present invention provides a photographic printing processing apparatus equipped with a guide member for guiding the conveyance of the photoreceptor in the conveyance path of the photoreceptor. The guide member is characterized in that the surface of the guide member in contact has a plurality of non-contact portions that do not come into contact with the photoreceptor and are uniformly distributed symmetrically in the traveling direction of the photoreceptor.

In this case, it is preferable that the non-contact portion is a through hole or that the non-contact portion is a recess.

[0008]

[Operation] The surface of the guide member on the side where the photoreceptor surface of the photoreceptor slides has a plurality of non-contact parts that do not contact the photoreceptor, so that the surface of the guide member and the photoreceptor surface of the photoreceptor come into contact with each other. Since the area is reduced, it becomes difficult for the photoreceptor to stick to the guide member even if the emulsion on the photoreceptor surface is sticky. Further, since the non-contact portions are distributed symmetrically and uniformly in the traveling direction of the photoreceptor, the conveyance resistance of the photoreceptor is applied uniformly in the transverse direction, thereby preventing deviation.

[0009]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows the overall structure of a photographic printing processing apparatus according to an embodiment of the present invention. As shown in the figure, the photographic printing processing apparatus includes a magazine 2 in which a roll of photographic paper 1, which is a photoreceptor coated with a photosensitive emulsion on one side, is stored;
It includes a main body case 3 to which photographic paper 1 is continuously supplied from a magazine 2. The magazine 2 and main case 3 have a dark box structure that blocks external light.
Inside, there are a paper feed roller 4 for drawing out the photographic paper 1 in the vertical direction, and a turn roller 5 for changing the direction of the photographic paper 1 so that the photosensitive surface 1a coated with emulsion is located on the lower side. A main conveyance roller 6 for applying running force to the photographic paper 1 and a feed roller 7 for conveying the photographic paper 1 diagonally downward are disposed in this order.Furthermore, on the downstream side of the feed roller 7, a sub conveyance roller 8 and a feed roller 7 are arranged in order. 9 are arranged at predetermined intervals.

[0010] The photographic paper 1 is subjected to a predetermined process while moving along a conveyance path formed by the plurality of rollers, and is then transferred into a fixing device (not shown). Upstream of the main conveyance roller 6 in the main body case 3 is an exposure section 10 that exposes the image of the negative film F onto the photographic paper 1. (omitted) is photosensitive surface 1 of photographic paper 1
It is provided on the a side. Reference numeral 11 denotes a mask frame to which the drawn end of this easel mask is attached, and the area between these mask frames 11 and 11 becomes the exposure range. That is, the easel mask has an end attached to each mask frame 11,
By moving the pair of mask frames 11, 11 toward and away from each other, the light shielding range by the easel mask is determined. Note that reference numeral 12 is a light source device for exposing the photographic paper 1 to light.

A hole punch 13 for punching a hole in the photographic paper 1 for alignment with a cutter 14, which will be described later, is provided downstream of the exposure section 10, and further downstream of the hole punch 13, the photographic paper A cutter 14 for cutting 1 into a predetermined size is provided. And this cutter 1
4, a back printer 15 and a greeting unit 16 are arranged in this order. The back printer 15 prints information such as the number of exposures, customer number, date, etc. on the base material surface of the photographic paper 1 opposite to the photosensitive surface 1a. Further, the greeting unit 16 is used to print and edit text and the like on the photosensitive surface 1a of the photographic paper 1.

In addition to the above configuration, this apparatus is provided with a guide member for smoothly running the photographic paper 1 within the main body case 3. 21 is photographic paper 1 from magazine 2
a first guide member for introducing the into the main body case 3;
22 is a second guide member that assists in changing the direction of the photographic paper 1 below the turn roller 5; 23 is a third guide member that holds and guides the photographic paper 1 during perforation by the hole punch 13; and 24 is a main conveyance member. Cutting paper 1 from roller 6
4, a fifth guide member 25 holds the photographic paper 1 during printing by the back printer 15, and a sixth guide member 26 guides the photographic paper 1 to the editing position by the greeting unit 16. , 27 is a seventh guide member formed in a "U" shape for guiding the photographic paper 1 to the sub-conveyance roller 8, and 28 is an eighth guide member provided between the sub-conveyance rollers 8 and 9. .

The surfaces of these guide members 21 to 28 located on the photosensitive surface 1a side of the photographic paper 1 and the mask frame 11 of the easel mask are in contact with the photosensitive surface of the photographic paper 1 coated with emulsion. These are generally formed into a flat or curved plate shape.

[0014] Hereinafter, these guide members will be collectively referred to as the "guide member 20", and their structure will be explained in more detail. 2 and 3 show a first embodiment, in which photographic paper 1 is conveyed while its photosensitive surface (lower surface) 1a is in contact with the upper surface of guide member 20. FIG. In this case, among the guide members 20, the guide members 21, 23, 24, 25, 2
6 and 28 correspond to the first example. This guide member 2
The upper surface of 0 is a flat surface, and a plurality of through holes 30 are non-contact portions that do not contact the photosensitive surface 1a of the photographic paper 1.
is formed. The through holes 30 are circular, symmetrical with respect to the traveling direction of the photographic paper 1, and uniformly distributed. By forming such a large number of through holes 30, the surface area of the upper surface of the guide member 20 is reduced, and thereby the area in contact with the photosensitive surface 1a of the photographic paper 1 is reduced. Therefore, even if the emulsion applied to the photosensitive surface 1a becomes sticky due to a high humidity environment, it will hardly stick to the guide member 20, and smooth guidance without uneven feeding, jamming, etc. can be performed. Further, since the through holes 30 are formed symmetrically and uniformly with respect to the traveling direction of the photographic paper 1, the conveyance resistance applied to the photographic paper 1 is uniform, and misalignment, meandering, etc. are prevented.

Such a through hole 30 may be formed on the entire surface of the guide member 20, but if the formation of the through hole 30 interferes with the function of the device, the through hole 30 may be formed at that location. Instead, the technology described in the fourth embodiment described later can be applied. FIG. 4 shows a fifth guide member 25 that guides photographic paper traveling through the back printer 15 portion. As shown in FIG. 5, the back printer 15 has an ink ribbon cassette 32 assembled to a main body 31, and the photographic paper 1 is attached to the back printer 15 and the fifth ink ribbon cassette 32.
By moving between the guide member 25 and the guide member 25, predetermined information is printed. 33 is ink ribbon cassette 3
This is a print head that performs printing by striking an ink ribbon 34 pulled out from the ink ribbon 2. Forming the through hole 30 in a portion facing the print head 33 causes printing defects. For this reason, the print head 33 in the guide member 15
As shown in FIG. 4, the corresponding portion is a portion 35 where the through hole 30 is not formed.

FIGS. 6 and 7 show a modification of the first embodiment. The through hole 30 in FIG. 6 has an oval shape,
Its longitudinal direction is located in the running direction of the photographic paper 1. With such a through hole 30, the number of through holes 30 can be reduced while maintaining the same contact area as in the first embodiment, and the tip of the photographic paper 1 can be prevented from getting caught in the through hole 30. Moreover, it is possible to guide the photosensitive surface 1a of the photographic paper 1 without damaging it. In this case, depending on the size of the photographic paper 1, the leading edge of the photographic paper 1 may be conveyed along the through hole 30, and the photographic paper 1 may be transported along the through hole 30.
It becomes easy to get caught in 0. Therefore, a modified example for solving this problem is shown in FIG.

A large number of through holes 30 in FIG. 7 are formed obliquely with respect to the running direction of the photographic paper 1, and each through hole 30 has an oval shape. Also in this Figure 7,
The same action as shown in FIG. 6 can be applied to the photographic paper 1. Furthermore, in this case, the left and right corners of the leading edge of the photographic paper 1 do not pass through the ends of the through hole 30, so the photographic paper 1 is more likely to be caught in the through hole 30 regardless of the size of the photographic paper 1. is prevented. In the figure, the through hole 30 has a "V" shape with respect to the running direction, but it goes without saying that it may also be formed in a "V" shape.

FIG. 8 shows a second embodiment of the guide member 20 used in the same location as the first embodiment, in which a receiving plate 36 is in contact with the lower surface of the guide member 20. As shown in FIG. The receiving plate 36 supports the guide member 20 and closes the through hole 30 formed in the guide member 20 at its lower part. By closing the through hole 30 in this manner, paper powder and dust generated from the photographic paper 1 are prevented from falling from the guide member 20. Therefore, even if functional parts (not shown) such as lamps, filters, gears, and belts are arranged below the guide member 20, paper dust and the like will not adhere to them, thereby preventing deterioration of optical characteristics and failure. be able to.

FIG. 9 shows the second embodiment applied to the greeting unit 16, in which a greeting lamp 37 and a filter 38 are arranged below the guide member 20. When greeting, a squirrel film and a glass plate (both not shown) are placed in place of the guide member 20 in place of the guide member 20 shown in the figure.
is configured so that it can move forward and backward. Therefore, when a greeting is not performed, the guide member 20 having the receiving plate 36 can prevent paper dust and the like from adhering to the filter 37 and the lamp 38.

FIG. 10 shows a third embodiment of the guide member 20, which is also used in the same location as the first embodiment. In this third embodiment, the guide member 20 is made of a so-called embossed material in which irregularities are formed on a plate material by pressing, casting, or the like. A large number of recesses 39 are formed on the upper surface of the guide member 20, which is formed flat. The recessed portion 39 has a depth that does not penetrate through the guide member 20. Therefore, the photographic paper 1 is isolated from the lower part of the guide member 20, and paper powder and dust generated when the photographic paper 1 runs does not fall to the lower part of the guide member 20, and the area below the guide member 20 can be dust-proofed. It has become.

FIG. 11 shows the shape of the recessed portion 39, which has a major axis located in the same direction as the running direction of the photographic paper 1, and is formed into a substantially elliptical shape with both ends tapered. By adopting such a shape, it is possible to effectively prevent the photographic paper 1 from getting caught and ensure its smooth running. Furthermore, since the long axis is in the same direction as the running direction of the photographic paper 1, the photographic paper 1 will not shift in a direction perpendicular to the running direction, so that accurate conveyance can be performed. Note that etching may be used as a means for forming the recessed portion 39.

FIG. 12 shows the third embodiment applied to the mask frame 11 of an easel mask. The edge of an easel mask (not shown) is connected to the mask frame 11 to hold the easel mask in a stretched state below the photographic paper 1, and the photographic paper 1 is in contact with the upper surface of the mask frame 11. drive in condition. For this purpose, a large number of depressions 39 similar to those shown in FIG. 10 are formed on the upper surface of the mask frame 11. The formation of the recessed portion 39 prevents the photographic paper 1 from sticking to the mask frame 11, allowing the photographic paper 1 to be guided without shifting its position, and also prevents paper powder and the like from falling downward from the mask frame 11. It disappears. However, in this case, if the recessed portion 39 is located at a corner of the mask frame 11, the photographic paper 1 will easily get caught in this portion. Therefore, in the mask frame 11, the fourth
The technique of the embodiment may also be applied.

FIG. 13 shows a fourth embodiment of the guide member 20. As shown in FIG. The guide member 20 of this example is applied to the case where the traveling photographic paper 1 is regulated in the vertical direction and the width direction, or when the photographic paper 1 is guided in a curved surface (guide members 22, 27). When regulating these directions of the photographic paper 1, forming the through hole 30 or the recessed portion 39 in the guide member 20 will cause the leading end of the photographic paper 1 to get caught and hinder its running. For this reason, the inner surface of the guide member 20 in contact with the photographic paper 1 is made flat and processed to have non-electrostatic properties and surface smoothness. Such processing can be performed by molding the guide member 20 from aluminum, forming a porous oxide film on its surface, and further impregnating the porous oxide film with a fluororesin such as tetrafluoroethylene. Photographic paper 1 due to processing
It is possible to ensure good sliding, ensure durability, and ensure vertical and widthwise regulation.

In addition to the above-described configuration, the present invention can also apply other means. For example, the surface of the guide member 20 in which the recessed portion is formed may be coated with a fluororesin, or the surface may be buffed. , a barrel, etc. may be used for polishing.

[0025]

Effects of the Invention In the present invention, since a plurality of non-contact parts that do not contact the photoreceptor are formed on the guide member with which the photoreceptor surface of the photoreceptor comes into contact, the contact area between the guide member and the photoreceptor is reduced.
The photoreceptor does not stick to the guide member, reducing uneven feeding and
The photoreceptor can run without jamming or deviation.

[Brief explanation of drawings]

FIG. 1 is a configuration diagram showing the entirety of an embodiment of the present invention.

FIG. 2 is a sectional view showing a first embodiment of the guide member.

FIG. 3 is a plan view of the first embodiment of the guide member.

FIG. 4 is a plan view of a guide member of the back printer portion.

FIG. 5 is a perspective view of the back printer portion.

FIG. 6 is a plan view of a modification of the first embodiment of the guide member.

FIG. 7 is a plan view of another modification of the first example of the guide member.

FIG. 8 is a sectional view of a second embodiment of the guide member.

FIG. 9 is a sectional view of the guide member of the greeting unit portion.

FIG. 10 is a sectional view of a third embodiment of the guide member.

FIG. 11 is a plan view of a third embodiment of the guide member.

FIG. 12 is a perspective view showing an example of application of the third embodiment to an easel mask.

FIG. 13 is a perspective view of a fourth example of the guide member.

[Explanation of symbols]

1...Photographic paper 1a...Photosensitive surface 20...Guide member 21...First guide member 22...Second guide member 23...Third guide member 24...Fourth guide member 25...Fifth guide member 26...Sixth guide member 27...Seventh guide member 28...Eighth guide member 30...Through hole 36...Socket plate 39... Recessed part

Claims (3)

[Claims] 1. A photographic printing processing apparatus comprising a guide member for guiding the conveyance of the photoreceptor in a conveyance path of the photoreceptor, wherein the surface of the guide member with which the photoreceptor surface of the photoreceptor comes into sliding contact is in contact with the photoreceptor. A photographic printing processing apparatus characterized by having a plurality of non-contact parts that do not come into contact with the photoreceptor and are uniformly distributed symmetrically in the direction of travel. 2. The photographic printing processing apparatus according to claim 1, wherein the non-contact portion is a through hole. 3. The photographic printing processing apparatus according to claim 1, wherein the non-contact portion is a recessed portion.