JPH0631462Y2 - Photo printing equipment - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) This invention simplifies the movement, replacement, and contact of a paper mask with respect to a photographic light-sensitive material in a printing-exposure unit of a photographic printing apparatus in which a long photographic light-sensitive material is loaded. The mechanism for doing.

(Prior Art) In this type of photographic printing apparatus, a paper mask is loaded on the surface of a long photographic light-sensitive material (printing paper) which is sequentially guided to the printing exposure section and conveyed by a light source through a negative film. When changing the printing size during printing exposure, the moving frame is slid in the auto mask, and in the manual method, the paper mask of each size is replaced from the outside. The photographic paper in the section interfered and the sliding frame slid smoothly, and it was not possible to replace the paper mask, which sometimes damaged the emulsion surface of the photographic paper with the paper mask.

In addition, in the printing device of the auto loading mechanism,
When sending the printing paper to the printing exposure unit, the exposure unit does not have a device to support the leading end of the printing paper, so the leading end of the printing paper is hooked on the roller (see the transport drive roller (14) in Fig. 5) provided in front of it. It was possible to print and expose for the first time in a held state where it was crimped, and the photographic paper from the exposure section to the roller was unnecessarily discarded without being exposed.

(Problems to be solved by the invention) Therefore, in the invention, in the printing exposure unit of the photographic printing apparatus, the photographic light-sensitive materials supported in close contact with each other are fixedly supported at appropriate time and further separated from the paper mask. The purpose of the present invention is to prevent the loss of the photographic light-sensitive material in the printing exposure operation and to simplify the change of the paper mask.

(Means for Solving the Problems) In order to achieve the above-mentioned object, the present invention sequentially feeds a long photographic light-sensitive material loaded in a photographic printing apparatus to a printing exposure unit, and loads a paper mask loaded on the surface of the photographic light-sensitive material. In a device equipped with a paper retainer so that the photographic photosensitive material can be detachably supported from the opposite side (back side) to the paper mask side, the paper retainer is synchronized with the backward movement of the paper retainer when replacing the paper mask. The photographic light-sensitive material is sucked through the through hole formed in the holding surface of the device, and the photographic light-sensitive material is sucked flat on the holding surface of the paper holding tool that retracts when the paper mask is replaced, fixedly held, and inserted and removed. It is characterized in that the photographic light-sensitive material is moved far away from the paper mask so as not to come into contact with it.

(Function) When changing (moving) the paper mask along the emulsion surface of the photographic light-sensitive material in the print-exposure section by changing the print size, hold the photographic light-sensitive material by suction and fix it to the holder surface By operating the presser tool to retract, the photographic photosensitive material is separated from the paper mask portion, and the paper mask can be easily inserted and removed.

In addition, when the photographic light-sensitive material is started, when the tip of the photographic light-sensitive material touches the printing and exposure area, the suction device is raised to hold the photographic light-sensitive material by suction on the surface of the pressure-sensitive material, so that the paper pressure tool is supported forward. By the operation, the tip of the photographic light-sensitive material cannot be escaped by being pressed by the paper mask in a state of being flatly held on the surface of the retainer, so that the exposure can be immediately performed from the tip.

(Embodiment) Next, a concrete embodiment of the photographic printing apparatus according to the present invention will be described with reference to the drawings.

FIG. 1 is a perspective view of a main portion of a printing exposure unit of a photographic printing apparatus embodying the present invention, FIG. 2 is a side view of the same, FIG. 3 is a perspective view of only a paper pressing tool, and FIG. FIG. 5 is a perspective view of only the mask, and FIG. 5 is a schematic vertical cross-sectional view showing the transport mechanism of the long photographic light-sensitive material in the printing exposure section of the photographic printing apparatus.

In the figure, (1) is a printing exposure section of a photographic printing apparatus, (2) is a photographic printing paper, and the long section is loaded in the original winding section (2a) and loaded in the exposure section (1) that is sequentially fed. Paper mask (3) with this photographic paper
(2) Exposure along the surface.

(4) is a paper retainer, which is photographic paper (2) in the exposure unit (1).
Presser holder attached to the support (7a) on the back side of the
Attach the back of this paper retainer (4) to (7) so that it can slide back and forth with pins (8) and (8), and attach the solenoid to the holder (7).
(9) By the action of (9), the printing paper (2) should be moved forward during exposure to press the printing paper (2) against the paper mask (3), and should also be moved backward during transportation and when the paper mask is replaced (changed).
(2) or paper mask (3) should be installed so that the passage is good. (3a) shows an exposure square hole formed in the center of the paper mask (3).

This paper retainer (4) has a large number of through holes (5) (5) for intake on the flat retainer surface (4a), and an exhaust window (4b) that can be equipped with an intake fan (6) on the back side. This suction mechanism is installed to replace the paper mask when changing (changing) the paper mask and exposing the leading edge (2b) of the photographic paper (2) at the start (auto loading mechanism). Operate in time with the pressing mechanism.

With this configuration, when replacing (changing) the paper mask, the suction mechanism of the paper retainer (4) is held up and the press mechanism is moved backward to move the photographic paper (2) to the paper retainer.
The holding surface (4a) of (4) penetrates and holds the through holes (5) and (5) and retracts and separates from the paper mask (3) part. The upper, lower, left and right frames (11), (12) of the mask (10) can be easily moved, and the surface of the photographic paper (2) is not damaged.

Also, when exposing the leading edge (2b) of the start (auto loading mechanism) of the photographic paper (2), press the paper holder.
By holding the suction mechanism of (4) and operating the pressing mechanism forward, with the tip (2b) of the photographic paper (2) attached to the pressing surface (4a) of the paper pressing tool (4) in a flat suction state. Paper mask
(3) Printing paper in an unstable state in which it does not rest on the transport drive roller (14) provided in front of the exposure unit (1) to support it on the surface
The tip (2b) of (2) can be supported flat and brought into close contact with the surface of the paper mask (3), so that the tip (2b) can be exposed by printing.

Further, during normal exposure, the paper pressing tool (4) is moved forward by pressing only the pressing mechanism, and the pressing surface (4a) presses the photographic paper (2) against the paper mask (3) surface for close contact. In addition, when the photographic paper (2) is being conveyed, only the pressing mechanism is retracted to release the pressure applied to the paper mask (3) surface of the photographic paper (2) by the paper retainer (4) to release the photographic paper (2). The paper presser is operated to lighten the feeding of the paper.
(4) has only a pressing action, and has no suction mechanism.

In the transport mechanism of the photo printing apparatus shown in FIG. 5, (13) is a feed drive roller, (13a) is the same pressure roller, (14a) is a pressure roller of the transport drive roller (14), and (15) is a support roller. , (16) indicates a cutter.

(Effect of the Invention) In the invention, in the printing exposure unit of the photographic printing apparatus, the present invention provides a suction mechanism for a paper holding tool that is detachably arranged on the back side of the photographic light-sensitive material so that the photographic light-sensitive material in contact with it can be used as a holding surface. By operating so that it can be adsorbed, the photosensitive material is adsorbed on the surface of the paper retainer and separated from the paper mask at a suitable time during the printing operation, and the paper mask part is opened widely, so mask replacement such as replacement of the paper mask and movement operation are possible. It is very easy to do and eliminates the risk of scratches on the surface of the photographic photosensitive material.

Also, the leading edge of the photographic photosensitive material at the start, such as the auto-loading mechanism, which had been thrown away because it could not be exposed because it was sent in an unstable state that could not be supported in the printing exposure section, has a suction action with this paper pressing tool. Thus, since it can be flatly adsorbed and fixed, printing and exposure can be immediately performed without waste from the tip of the photographic light-sensitive material.

In this way, the suction action of the paper retainer is appropriately timed so that the changing operation of the paper mask can be performed easily and safely, and the printing work efficiency can be improved. The effects such as eliminating the inability to print, eliminating the loss of the photographic light-sensitive material, and reducing the printing cost are achieved.

[Brief description of drawings]

FIG. 1 is a perspective view of a main portion of a printing exposure unit of a photographic printing apparatus for carrying out the present invention, FIG. 2 is a side view of the same, FIG. And FIG. 5 is a schematic vertical sectional view showing a conveying mechanism of the photographic light-sensitive material in the printing exposure section of the photographic printing apparatus. In the figure, (1) is a printing exposure part, (2) is printing paper, (3) is a paper mask, (4) is a paper holder, (4a) is a holding surface, (5) is a through hole, (6) Is an intake fan, and (9) is a solenoid.

Claims (3)

[Scope of utility model registration request] 1. A photographic light-sensitive material surface sent to a printing exposure section,
In a printing device equipped with a loaded paper mask and a paper retainer that supports the paper mask so that it can be detached from the back side of the paper mask, the paper retainer is pressed against the retainer surface in synchronization with the backward movement of the paper retainer when replacing the paper mask. A photographic printing apparatus which is designed to suck a photographic light-sensitive material through a through hole. 2. The utility model registration according to claim 1, wherein the paper retainer is box-shaped, and an exhaust window equipped with an intake fan is provided on the back of a large number of through holes formed on the retaining surface. Photo printing equipment. 3. The photographic printing apparatus according to claim 1 or 2, wherein the pressing support mechanism of the paper pressing member is retracted and released by a solenoid action.