JPS6134518Y2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a film pack ejecting mechanism for a self-processing camera.

Conventionally, a film pack loading chamber is provided with a vertically elongated film pack into which a film pack containing a film unit can be inserted (loaded) from the longitudinal direction, and a pair of pressure rollers are built into the film pack loading opening of the loading chamber.
Furthermore, a self-processing type camera is well known in which a pressurizing unit having a film unit outlet is attached so as to be openable and closable.

By the way, this type of self-processing camera requires an ejector to slightly lift the empty film pack from the film pack loading slot to make it easier to grab it with your fingers. Furthermore, when using a film pack that has an identification mark on the back that indicates the type of film unit stored, it is a good idea to open a mark display window in the film pack loading chamber to confirm the presence or absence of the film unit and its type. However, in conventional cameras, a member is attached to the mark display window to block harmful rays from entering the film unit through the mark display window, and an ejector is separately provided. The problem was that the manufacturing and assembly processes were increased, leading to higher costs.

This idea was made in view of the above-mentioned conventional problems.The ejector is integrally molded with a transparent synthetic resin that has the function of blocking or absorbing light rays harmful to the film unit, and the ejector function and mark are displayed. To provide a film pack ejecting mechanism which also has a window light shielding function.

Hereinafter, one embodiment of this invention will be described in detail with reference to the accompanying drawings.

As shown in FIG. 1, the self-processing camera has a rectangular tube-shaped lens barrel 3 that supports a photographic lens 1, an exposure meter 2, a shutter mechanism (not shown), etc. on the front side.
The camera body 4 is provided with a relatively flat, approximately rectangular box-shaped camera body 4 that follows the camera body 4, and a vertically long sealed shape that is dug into the camera body 4 from the upper surface of the upper surface portion 5 is provided on the upper surface portion 5 of the camera body 4. Film pack loading chamber 6
A long film pack loading opening 7 is provided in the lateral direction of the camera body 4 so that the film pack P can be inserted from above.

Above the top surface 5 of the camera body 4, there are a pair of pressure rollers 8, 8, and a viewfinder 9 on the right side in the figure.
A pressurizing unit 11 having a generally rectangular parallelepiped shape and having a slit-like film unit outlet 10 formed on the upper surface is disposed.
The short side, ie, the lower end of the right side, is hinged at a hinge portion 12, so that the film pack loading opening 7 can be opened and closed by a pressure unit 11.

As is clear from FIG. 3, the hinge structure between the camera body 4 and the pressure unit 11 includes a pair of rising edges 1 on the left side of the top surface 5 of the camera body 4 in the figure.
3 and 13, and the pressure unit 11
is provided with a hinge portion 14 that fits between the rising edges 13, 13, and the hinge portion 14 is provided between the rising edges 13, 13.
4 are fitted together, the hinge shaft 12 is inserted from the rising edges 13, 13 side, and the pressurizing unit 11 is integrated into the camera body 4.

As shown in Figures 1 and 2, the above film pack P can be processed by diffusion transfer photography with the orientation aligned within a relatively flat square box-shaped pack body Pb with an exposure frame opening Pa on the front side. A large number of film units U are stacked and housed, and the drive motor of the film unit feed mechanism (not shown) starts rotating in conjunction with the shutter release, and the pack body Pb is driven by the drive motor.
A feeding claw (not shown) that fits into the notch Pc moves the exposed film unit U to the unit feeding port Pd.
The film is fed out from the film unit, and is fed out from the film unit outlet 10 of the pressure unit 11 while being pressed by the pressure rollers 8, 8. At the center of the back of the film pack P, there are provided an arrow indicating the insertion direction of the film pack P and an identification mark M indicating, for example, color or monochrome, ASA sensitivity, number of sheets, etc.

On the other hand, on the rear wall 4a of the film pack loading chamber 6 of the camera body 4, a mark display window 15 corresponding to the identification mark M of the loaded film pack P is provided.
By opening the identification mark M and observing the identification mark M through the mark display window 15, the presence of the film pack P can be determined.
It is possible to check for absence and type.

Next, as shown in FIGS. 4 and 5, on the inner surface of the rear wall 4a of the film pack loading chamber 6, guide rails extending in the insertion direction of the film pack P are provided on both sides of the mark display window 15. An ejector 16 is provided for taking out the film pack P, which is guided vertically and slidably on both shoulders 16a (not shown). The ejector 16 is
The film unit U is molded from a transparent (semi-transparent) synthetic resin that has the function of blocking or absorbing harmful light rays, such as an ND filter function, and the lower end has a film pack P loaded in the film pack loading chamber 6. an inwardly directed hook portion 17 that engages with the
and a knob 18 projecting outward from the mark display window 15 is integrally molded on the upper outer surface, so that the ejector 16 can be slid up and down by external operation of the knob 18.

Note that 19 is a spring for pressing the film pack P provided on the inner surface of the rear wall 4a, and 20 is a light-shielding bellow that connects the pressing spring 19 and the rear wall 4a in a light-tight manner. Prevents incoming light rays from going around.

In the self-processing camera configured as described above, the pressure unit 11 is now rotated clockwise to open the film unit loading port 7.
When the film pack P is inserted (loaded) into the film unit loading chamber 6 from the beginning, at the end of the insertion,
The end of the film pack P engages with the hook portion 17 of the ejector 16, and the ejector 16 is lowered.

After loading the film pack P, the pressure unit 11
When the film unit loading opening 7 is closed by rotating the camera counterclockwise, the pressure unit 11 is locked onto the camera body 4 by a locking mechanism (not shown), and the gear 20 of the pressure roller 8 is locked. It comes to mesh with the final gear 21 of the gear drive system connected to the drive motor.

In this state, the identification mark M of the loaded film pack P can be observed at any time through the mark display window 15, and the presence, absence, and type of the film pack P can be easily checked. Further, harmful light rays entering the film pack loading chamber 6 from the mark display window 15 are blocked by the light shielding or absorbing function of the ejector 16, so that there is no fear that the film unit U will be covered by the light. Note that if the ejector 16 is molded from a synthetic resin that has an excellent function of cutting off harmful rays, the light-shielding bellows 20 is not particularly necessary.

Then, by grasping the grip 22 of the camera body 4 and pressing down the shutter button 23,
Imagewise exposure is applied to the film unit U in the film pack P loaded in the film pack loading chamber 6. With this shutter release, the film unit feeding mechanism operates as described above, and the exposed film unit U is moved between the pair of pressure rollers 8 and
While being pressurized at step 8, the film unit is sent to the outside through the film unit outlet 10.

After several shooting cycles, when the film unit U in the film pack P is used up, the locking mechanism is released and the pressure unit 11 is rotated around the hour hand again to open the film unit loading slot 7.
When the ejector 16 is raised with the knob 18,
The empty film pack P is inserted into the loading slot 7 by the hook part 17.
It will be lifted slightly from the top, making it easier to grasp with your fingers and allowing you to take it out smoothly.

As is clear from the above explanation, in this invention, the ejector is molded from a transparent synthetic resin that has the function of blocking light from the mark display window, so just by providing the ejector, it is possible to block light from entering the mark display window. At the same time, the effect of an ejector can also be achieved. In addition, since the ejector is molded from synthetic resin, it has an extremely simple structure, can be manufactured at low cost, and is easy to assemble.
It has various advantages and is of great practical value.

[Brief explanation of the drawing]

Figure 1 is a front perspective view of the self-processing camera with the pressure unit open, Figure 2 is a rear perspective view of the film pack, and Figure 3 is a rear perspective view of the self-processing camera with the pressure unit closed. FIG. 4 is a longitudinal sectional view of the ejector, and FIG. 5 is a perspective view of the ejector. 4...Camera body, 6...Film package loading chamber, P...Film package, 7...Film package loading port, 8, 8...Pressure roller, 10...Film unit outlet, 11...Pressure Unit, M
...Identification mark, 15...Mark display window, 16...
...Ejector, 17...Hook part, 18...Knob.

Claims (1)

[Scope of Claim for Utility Model Registration] The camera body is provided with a vertically elongated film pack loading chamber into which a film pack containing a film unit capable of diffusion transfer photographic processing can be inserted from the longitudinal direction. A pair of pressure rollers is built into the pack loading opening,
In a self-processing camera in which a pressurizing unit with a film unit ejection port is attached so as to be openable and closable, a mark display window is provided on the rear wall of the film pack loading chamber, and a mark display window is provided on the inner surface of the rear wall. A hook part that can be engaged with the end of the film pack and a knob part that protrudes from the mark display window are integrally molded using a transparent synthetic resin that has the function of blocking or absorbing light rays that are harmful to the film unit. The ejector is movably arranged, and when loading the film pack, it is installed on the back of the film pack.
An identification mark indicating the type of film unit to be stored is displayed externally through the transparent ejector and the mark display window, and when the film unit is taken out, the hook part of the ejector moves when the knob is operated. A film pack ejecting mechanism for a self-processing camera, characterized in that the film pack is lifted from the film pack loading port to the outside.