JPS6152456B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a self-processing camera film pack presence indicator.

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, in this type of self-processing type camera, in order to check whether or not a film pack is loaded in the film pack loading chamber, it is common to know indirectly from the camera's number of sheets counter, but if the film pack is not loaded, It is not accurate as it may sometimes turn off an empty shutter, and there are other problems such as opening the pressurizing unit and inspecting it directly may cause the film unit to be exposed to light unnecessarily.

Furthermore, what is even more difficult than checking the presence of a film pack is to recheck the type of film unit (color, black and white, sensitivity, etc.) contained in the loaded film pack.

The present invention has focused on the fact that film packs have been put into practical use that have an identification mark on the back side of the film pack that indicates the type of film unit stored in the film pack, and a mark display window is provided in the film pack loading chamber. An opening/closing member is provided which moves forward to open the mark display window in conjunction with the insertion of the film pack and back to close the mark display window in conjunction with the removal of the film pack. When the display window is opened, the identification mark of the film pack can be displayed externally from the mark display window, making it easy to check the presence/absence of the film pack and the type of film pack, such as sensitivity, number of sheets, dimensions, etc. This is what I did.

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

As shown in FIG. 1, the self-processing camera has a rectangular 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 hole is provided on the top surface 5 of the camera body 4, which is dug into the camera body 4 from the front side of the top surface 5. 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, that is, the lower end of the right side is hinged to the camera body 4 with a hinge shaft 12, and the pressurizing unit 11
The pressurizing unit 1 can be rotated upward.
1 allows the film pack loading opening 7 to be opened and closed.

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 of
The exposed film unit U is at the unit outlet.
The film is sent out from Pd, and is sent out from the film unit outlet 10 of the pressure unit 11 while being subjected to pressure processing by the pressure rollers 8, 8. At the center of the back of the film pack P, an arrow indicating the insertion direction of the film pack P and an identification mark M indicating the type of the stored film unit U, such as color, black and white, ASA sensitivity, etc., are provided. There is.

On the other hand, a mark display window 15 corresponding to the identification mark M of the loaded film pack P is provided on the rear wall 4a of the film pack loading chamber of the camera body 4, and the identification mark M can be observed through the mark display window 15. By doing so, it is possible to check the presence/absence of the film pack P and its type.

Next, as shown in FIGS. 5a and 5b, on the inner surface of the rear wall 4a of the film pack loading chamber 6, there are guides extending in the insertion direction of the film pack P on both sides of the mark display window 15. Rail part 1
6, 16, and a presser plate 17 fixed to the rear wall 4a.
An opening/closing lever 18, which also serves as an ejector for taking out the film pack P, is provided which is slidably guided up and down by the opening/closing lever 17, and a window 19 having substantially the same shape as the mark display window 15 is provided in the center stage of the opening/closing lever 18. At the same time, a photosensitive (light-shielding) filter 20 covering the window 19 is attached to the stepped portion.

The lower end of the opening/closing lever 18 is provided with an inward hook portion 21 which engages with the lower end of the film pack P loaded in the film pack loading chamber 6, and which protrudes outward from the long groove 22 at the top of the back portion 4a. A knob 23 is attached to the outwardly bent portion of the upper end, and the opening/closing lever 18 can be slid up and down by external operation of the knob 23.

Therefore, when inserting the film pack P, the opening/closing lever 18 is moved downward by the hook portion 21.
Since the window 19 coincides with the mark display window 15, the mark display window 15 is displayed through the photosensitive filter 20.
The identification mark M of the film pack P is displayed on the screen.Conversely, when removing the film pack P, the opening/closing lever 18 is moved back upwards by the knob 23, and the "EMP" mark on the opening/closing lever 18 is displayed as a mark. By being closed in accordance with window 15,
The mark display window 15 now displays that no film pack P is present.

In the self-processing camera configured as described above, the pressure unit 11 is now centered around the hinge shaft 12.
When the film unit loading port 7 is opened by rotating the camera around the hour hand and the film pack P is inserted (loaded) into the film unit loading chamber 6 through the loading port 7, at the end of the insertion, the film pack P is opened. The end portion engages with the hook portion 21 of the opening/closing lever 18, the opening/closing lever 18 is moved forward, and the window 19 opens into the mark display window 1.
5.

After loading the film pack P, the pressure unit 11
When the film unit loading port 7 is closed by rotating the camera counterclockwise, the pressure unit 11 is locked against the camera body 4 by a locking mechanism (not shown), and the gear 24 of the pressure roller 8 is locked. It meshes with the final gear 25 of the gear drive system connected to the drive motor.

In this state, from the mark display window 15,
The identification mark M of the loaded film pack P can be observed at any time, and the presence/absence of the film pack and the type can be easily checked.

Then, by grasping the grip 26 of the camera body 4 and pressing down the shutter button 27,
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 8.
While being pressurized, the film is sent out from 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 is rotated again around the hour hand to open the film unit loading slot 7, and the film unit loading slot 7 is opened using the knob 23. When the opening/closing lever 18 is moved back, the empty film pack P is lifted upward by the hook portion 21 and can be taken out smoothly.
5, a message indicating that no film pack P is present is displayed.

Note that the opening/closing lever 18 is designed to completely block light by pasting a photosensitive (light-shielding) film on the window 19, but in some cases, the window 19, photosensitive filter 20, and "EMP" mark may be attached to the window 19. It is also possible to provide only the ejector function for taking out the film pack P by bending the mark display window 15 so as to bypass the mark display window 15.

Further, as shown in FIG. 6, displacement parts 30, 30 are integrally provided on both sides of the lower part of the opening/closing lever 18, and are capable of contacting a pair of pressing springs 29, 29 for pressing the film pack P to the exposure position. Pressing spring 29,
29 is brought into contact with the opening/closing lever 18 so as to be displaced to a pressed position at the end of the forward movement, and to a non-pressed position at the end of the backward movement, so that loading and unloading of the film pack P can be carried out smoothly. You can also do it.

As is clear from the above explanation, the present invention
The mark display window provided in the film pack loading chamber is provided with an opening/closing member that opens the mark display window when the film pack is inserted and closes the mark display window when the film pack is removed.
The identification mark of the film pack loaded in the film pack loading chamber can be known from the mark display window, and the presence/absence of the film pack and the type can be easily and quickly checked.

Furthermore, it is possible to provide the opening/closing member with an ejector function for taking out the film pack and a function of displacing the pressure plate spring, which provides various advantages such as smooth loading and unloading of the film pack. It has 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. 4 is a perspective view of the opening/closing lever, FIG. 5 a is a longitudinal sectional view of the opening/closing lever, FIG. 5 b is a sectional view taken along line A--A in FIG. 5 a, and FIG. FIG. 7 is a perspective view showing another embodiment of the lever. 4...Camera body, 6...Filmpack loading chamber,
P... Film pack, 7... Film pack loading port, 8, 8... Pressure roller, 10... Film unit outlet, 11... Pressure unit, M... Identification mark, 15... Mark display window, 18... Opening/closing lever, 2
DESCRIPTION OF SYMBOLS 1... Hook part, 23... Knob, 29, 29... Pressing spring, 30, 30... Displacement part.

Claims (1)

[Scope of Claims] 1. A camera body is provided with a vertically elongated film pack loading chamber into which a film pack housing a film unit capable of diffusion transfer photographic processing can be inserted from the longitudinal direction, and the film pack in the film pack loading chamber is In a self-processing camera in which a pair of pressure rollers is built into the loading opening and a pressure unit with a film unit ejection opening is attached so as to be openable and closable, there is a mark display window on the rear wall of the film pack loading chamber. At the same time, the mark display window is moved forward to open the mark display window in conjunction with the insertion of the film pack, and to close the mark display window in conjunction with the removal of the film pack, on the inner surface of the rear wall. A reciprocating opening/closing member is provided, and when the mark display window is opened, an identification mark provided on the back of a loaded film pack and indicating the type of film unit to be stored is displayed externally from the mark display window. A self-processing type camera film package display device characterized in that it is capable of displaying a film package. 2. In the film pack presence display device for a self-processing camera as set forth in claim 1, the opening/closing member includes a hook part that can be engaged with an end of the film pack, and a knob part that can be operated from the outside. A self-processing camera characterized in that when inserting the film pack, the film pack is moved forward by the film pack engaging with the hook part, and when removing the film pack, the film pack is moved back by operating the knob part. A film package display device.