JPH0317303Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] This invention relates to an opening/closing device for a strip insertion hole in a photographic material processing machine.

[Conventional technology]

In the photosensitive material processing machine, as shown in FIG. 4, a color paper P exposed in a printing section 20 is conveyed to a paper developing section 21 for development processing, and then conveyed from the paper developing section 21 to a drying section 22. The color paper P that has been dried is conveyed to a paper cutter section 23 and cut into a predetermined size.

Generally, when developing color paper, it is necessary to strictly control the processing liquid stored in the developing section 21, and if the temperature is inappropriate or the processing liquid is not sufficiently stirred, color development will be insufficient. Become complete.

For this reason, when developing color paper that has been exposed to light, normally a flexible strip reader L is inserted into the strip insertion hole 24 formed in the upper part of the developing section 21, as shown in FIG. The holder 25 is connected to the reader L in advance.
The control strip S supported by the control strip S is conveyed to the developing section 21 and subjected to developing processing. At this time, the control strip S
Immediately before the strip is transported, the holder 25 is inserted into the strip insertion hole 24 to keep the developing section 21 in a light-shielded state.

After developing the control strip S, the colored portion of the strip S is measured with a densitometer, and the density is compared with the color density of a reference strip that has been subjected to standard processing by the photosensitive material manufacturer. We are trying to determine whether the processing solution is appropriate.

The control strip S is a piece of color paper that has been exposed in advance and is undeveloped.

As mentioned above, the photographic light-sensitive material processing machine has a developing section 2.
Since the insertion hole 24 is provided in the upper part of the developing section 1, when developing the color paper P, it is necessary to close the insertion hole 24 and keep the inside of the developing section 21 in a light-shielded state.

For this reason, as shown in FIG. 5, the insertion hole 24 is provided with a lid 26 that can be opened and closed, so that the strip insertion hole 24 is kept fully open by the lid 26 when performing the developing process. I have to.

[Problem that the invention attempts to solve]

By the way, conventionally, an engaging pawl 28 is formed on each of the rotatably supported lid body 26 and the frame body 27 having the strip insertion hole 24, and the engaging pawl 28
Since the lid body 26 is held in the closed state by engagement of In some cases, the insertion hole 24 is open, and development errors often occur.

Therefore, it is an object of this invention to provide an opening/closing device which eliminates the above-mentioned inconvenience and makes it possible to easily determine whether the lid for opening and closing the strip insertion hole is completely locked.

[Means for solving problems]

In order to achieve the above object, this invention provides a spring that biases the lid in the opening direction below the rotatable lid that is held in a fully closed state by the engagement mechanism. The lower surface of the body is provided with a spring retainer that presses down the center of the spring when the lid is closed.

〔Example〕

Embodiments of this invention will be described below with reference to FIGS. 1 to 3.

As shown in the figure, a support frame 2 is attached to the upper part of the developing box 1, and a strip insertion hole 3 is formed inside the support frame 2.

A projection 4 rising from the inner periphery of the strip insertion hole 3 is formed on the upper surface of the support frame 2, and a bearing 5 is provided on the outside of the projection 4.

A lid 6 disposed on the upper part of the support frame 2 is provided with a protrusion 7 facing the bearing 5, and a support shaft 8 provided on the protrusion 7 is rotatably supported by the bearing 5. . Therefore, the lid 6 can be rotated around the bearing 5, and when the lid 6 is rotated toward the strip insertion hole 3, the rectangular closing tube 9 provided on the lower surface of the lid 6 will protrude. Fits on the outside of part 4,
The strip insertion hole 3 is completely closed. At this time, the lid 6 is held in a locked state by the action of the engagement mechanism 10 and the spring 15.

Although any mechanism can be adopted as the engagement mechanism 10, here, engagement claws 11 and 12 are provided on the lower surface of the lid body 6 and the upper surface of the support frame 2, and the engagement claws 11 and 12 are The engagement locks the lid 6 in the fully closed position.

A pin 13 is provided on the protrusion 7 of the lid 6 at an eccentric position with respect to the support shaft 8, and a spring 15 is passed between the pin 13 and a pin 14 provided on the outer peripheral side of the support frame 2. There is. For this reason, the lid body 6
The pin 13 provided on the cover 6 is pulled by a spring 15, and if the pair of engagement claws 11 and 12 are not fully engaged, the lid 6 will rotate upward. Therefore, by checking the condition of the lid 6,
It is possible to judge whether the lid 6 is locked or not, and it is possible to prevent development mistakes due to mistakes in locking the lid 6.

As in the embodiment, the spring 15 on the lower surface of the lid body 6
A spring presser 16 is provided at a position facing the center, and when the lid body 6 is closed, the spring presser 1
6 presses the center of the spring 15, the restoring force due to the deformation of the spring 15 is
Since it acts to push the lid 6 in the opening direction, the lid 6 can be given elasticity due to the tension of the spring 15 and elasticity due to deformation. Therefore, even if the lid 6 is incompletely locked, the lid 6 can be reliably opened.

In the case of the embodiment, the spring 15 is pulled at a position eccentric from the center of rotation of the lid 6, but when the lid 6 is provided with a spring retainer 16 for spring deformation, the rotation of the lid 6 is A spring 15 may be connected to the center. Also, spring 15
is not limited to a tension spring, but may also be a tight spring.

〔effect〕

As described above, according to this invention, when the lid is rotated in the closing direction, the spring is expanded and deformed by the pressure of the spring presser, and the two restoring forces of the spring due to the expansion and deformation are Since it acts in the direction of opening, the lid can be reliably opened even if the engagement mechanism is incompletely engaged. Therefore, it can be easily checked whether the strip insertion hole is completely closed, and development errors can be prevented from occurring.

[Brief explanation of the drawing]

FIG. 1 is a partially cutaway front view showing an embodiment of the opening/closing device according to the invention, FIG. 2 is a front view showing the lid in an open state, and FIG. 3 is a perspective view of a portion of the same. FIG. 4 is a schematic diagram of a photographic material processing machine, and FIG. 5 is a perspective view showing a conventional opening/closing device. DESCRIPTION OF SYMBOLS 1...Development box, 3...Strip insertion hole, 6...Lid, 10...Engagement mechanism, 15...Spring, 16...Spring retainer.

Claims (1)

[Scope of utility model registration request] A photographic photosensitive material having a rotatable lid for opening and closing a strip insertion hole formed in the upper part of a developing box, and an engagement mechanism for holding the lid in a fully closed state between the lid and the developing box. In the processing machine,
A spring for deflecting the lid in the opening direction is provided below the lid, and a spring presser is provided on the lower surface of the lid to press down the center portion of the spring when the lid is closed. An opening/closing device for a strip insertion hole in a photosensitive material processing machine.