JPH04177230A - Film unit with lens - Google Patents

Abstract

PURPOSE:To enable the frequency of re-use of a film unit with a lens to be easily identified without any substantial change of film unit structure by providing the film unit with the second counter capable of advancing by one frame with one rotation of a film frame number counter. CONSTITUTION:A film frame number counter 10 is rotated once by a user or in a laboratory, when a film preliminarily built into a film unit with a lens is consumed and the one-time use of the unit is finished. As a result, the second counter 11 advances by one frame, and even when the film unit with a lens is loaded with a new film roll for re-use, the frequency of the repeated use of the unit can be immediately identified, according to the advanced position of the second counter 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a lens-equipped film unit in which a film is preliminarily housed in a film container incorporating a photographing mechanism such as a photographing lens and a shutter.

[Conventional technology]

The product name is R-Sharun, which is a film unit with a lens that is equipped with a simple photographic mechanism in a container containing film1.
It is sold by the applicant as r-sharun desu・Hil etc. This lens-equipped film unit is equipped with a simple shutter, a winding mechanism, a strobe mechanism, etc., and winds the exposed film into a cartridge each time a photograph is taken. After use, if you submit the entire unit to a processing shop, part of the unit will be released, the film bartrone will be removed, development and printing will be done, and the negatives and prints will be returned to the user. ing.

Recently, in order to use resources more effectively, it has been considered that the unit body after the film has been removed is returned to the manufacturer's factory, and if there is little damage, it can be reused.

[Problem to be solved by the invention]

However, lens-equipped film units are manufactured at low cost due to the nature of the product, and when compared with ordinary cameras, it cannot be said that the internal mechanisms such as the shutter and film winding section have sufficient durability. Therefore, if it is intended to be reused, it is necessary to accurately know the number of times it is recycled. To deal with this, it would be possible to take measures such as marking the required parts of the lens-equipped film unit each time it is collected, but manual work is not only cumbersome but also prone to mistakes. .

In order to eliminate the above-mentioned drawbacks, the present applicant has proposed
No. 6825 proposed a method for recording the number of times film is refilled in conjunction with the loading and unloading of the cartridge, but this requires a counter to be installed in the film chamber, which increases the size of the film chamber, and when using a 35m/m cartridge. Because of the problem of light shielding, a simpler method was desired.

[Object of the Invention] The present invention has been made in view of the above-mentioned background, and the present invention has been made to provide a lens-equipped film unit that makes it possible to easily identify the number of reuses without significantly changing the structure of the lens-equipped film unit. The purpose is to provide film units.

[Means to solve the problem]

In order to achieve the above object, the present invention provides a lens-equipped film unit that is intended to be returned to a photo lab after use, in which the number of film frames is rotated at a fixed angle in conjunction with the winding of one frame of film. A second counter is provided in conjunction with the rotation of the counter so that each revolution of the film frame number counter advances one section, and the number of times of recycling can be determined based on the progress of the second counter. It is. It is also effective to provide the second counter with a recording section for storing date data, etc.

C Effect] The film frame number counter is rotated once by the user or the laboratory when the film pre-installed in the lens-equipped film unit is consumed and one use of the lens-equipped film unit is completed. This advances the second counter by one section, so even if the lens-equipped film unit is reused with a new film built-in,
It becomes possible to immediately identify the number of times the lens-equipped film unit is repeatedly used from the advanced position of the second counter. Therefore, it becomes possible to easily identify reuse or the center of reuse according to the position of the second counter.

Furthermore, by writing data such as the date of reuse in a recording section provided in the second counter, the date of the previous reuse can be known at the time of next reuse.

〔Example〕

Embodiments of the present invention will be described with reference to the drawings.

In FIG. 1 showing the main parts of a lens-equipped film unit using the present invention, a main body part 2 is provided with a cartridge storage chamber 3 and a film roll chamber 4 for storing the film pulled out from the cartridge in the form of a roll. There is. The main body 2 is further formed with a film passing surface 5, and when a winding knob 6 is rotated after photographing, the exposed film is wound into the cartridge by the rotation of the cartridge shaft.

A sprocket 8 is exposed above the film passing surface 5 so as to engage with the film perforation, and rotates once when the film is wound up by one frame. A shaft 9 is integrated into the sprocket 8, and the rotation of the sprocket 8 via this shaft 9 is controlled by a frame counter 10. Second counter 11
It is transmitted to the counter mechanism section consisting of etc.

Further, when the sprocket 8 rotates once, a winding stopping mechanism is activated as is well known, and the rotation of the winding knob 6 is locked, and when a photograph is taken, the lock on the winding knob 6 is released. In addition, if the main body part 2 has a front cover 13. A back cover (not shown) is covered to maintain a light-tight film passage area inside the cartridge chamber 3 and the film roll chamber 4, and between the cartridge chamber and the film roll chamber.

FIGS. 2 and 3 show the structure of the top side and bottom side of the counter mechanism, respectively. A notch 9a is formed at the upper end of the shaft 9, which is integral with the sprocket 8, and is adapted to mesh with a gear 10a formed on the outer periphery of the frame counter 10. When the winding dial 6 is operated to transport the film 15 after shooting, the sprocket 8 rotates in response to this, and when the resprocket 8 rotates once to transport one frame of the film 15, the frame number counter 10 is set. be advanced. The number of frames is displayed on the surface of the frame number counter 10, and a counter window 1 formed on the top surface of the front cover 13
6 (see Figure 4), the number of remaining films is displayed.

As shown in FIG. 3, a pin 17 and an arcuate plate 18 are provided on the bottom surface of the frame number counter 10. The pin 17 is adapted to engage with the groove 20a of the Geneva gear 20, and the arc plate 18 is adapted to engage with the arc portion 20a of the Geneva gear 20.
It is designed to come into sliding contact with b. Then, when the frame number counter 10 rotates once, the Geneva gear 20 rotates 1/4.

Four display plates 21 are integrally formed on the Geneva gear 20, and an opening 22 formed on the upper surface of the front cover 13 is located on the surface of the display plate 21.
It is located directly below (Figure 4). Then, the Pi 1 F 2
Arc plate 18. The Geneva gear 20° display plate 21 constitutes a second counter 11 that advances one step when the frame number counter 10 rotates once.

The display board 21 is provided with numbers from ■ to ■ as shown in the figure to indicate the number of times it has been used. Good too. Further, a recording space is provided on the surface of the display board 21,
In order to reuse the lens-equipped film unit, it is possible to record data such as the date and time when the film was refilled. Of course, this recording space may be omitted if it is only used to identify the number of reuses.

As shown in FIG. 4, the unit body is covered with a packaging paper box 23, and an opening is provided at a location corresponding to the counter window 16, so that the display of the frame number counter 10 can be seen. However, since the opening 22 is covered with a paper box 23, the user cannot see the display on the display board 21.

Next, the operation of the above embodiment will be explained with reference to the flowchart shown in FIG. After shooting, the unit itself is sent to a photo lab for processing with the film still loaded. At the developing laboratory, the cartridge containing the photographed film is taken out and developed.

After removing the cartridge, the film unit with lens is returned to the factory, the paper box 23 is peeled off and the unit body is inspected, and the frame counter 10 from the shooting end position is rotated to the start position. As a result, the frame counter 10 has made exactly one rotation from the starting position, and the Geneva gear 20 has rotated 1/4 to move to the next display plate 2.
1 moves directly below the opening 22. As a result of the inspection, if the display board 21 is not severely damaged and can be reused, the display board 21 is further observed through the opening 22 to determine the number of times it has been recycled. If it is confirmed by the display board 21 that the product has been reused a specified number of times, the product is discarded as is, even if there is no noticeable external damage. Of course, even when discarded, most of the resin unit body can be remelted into pellet material and used as a material for new products.

If the unit can be reused and the number of times of recycling is less than the specified number of times, a film is loaded and new data on the date of reuse is recorded in the recording space of the unused display board 21. Known methods such as laser marking or inkjet can be used to print the data. In this case, since the recording space of the new display board 21 is always located directly below the opening 22, it is only necessary to record data such as date at a constant position, without changing the recording position each time. It will be done.

A new paper box 23 is placed on the unit body in which a new film has been loaded in this way, and the product is shipped.

Although the embodiment in which the number of times of recycling is four has been described above, the number of times of recycling may be set to a value other than four times in consideration of the degree of damage and the continuous recycling life. Also, regarding the method of driving the second counter, various methods such as a ratchet wheel, a well-known gear mechanism, etc. can be used in addition to the intermittent feeding mechanism using Geneva gears.

[Effects of the Invention] As explained above, the present invention provides the following advantages:
Since the second counter is configured to advance one section, it becomes possible to immediately identify the number of times of recycling. and,
While repeatedly using the film unit with lens,
By discontinuing the reuse of lenses whose repetition frequency has increased, it is possible to maintain high reliability of the lens-fitted film unit when reusing the film unit.

[Brief explanation of drawings]

FIG. 1 is a rear perspective view of the lens-fitted film unit of the present invention with the back cover removed. FIG. 2 is a top view of the counter mechanism used in the present invention. FIG. 3 is a bottom view of the counter mechanism shown in FIG. 2. FIG. 4 is an external view of the rear side of the lens-equipped film unit. FIG. 5 is a flowchart showing the procedure for reusing the lens-fitted film unit of the present invention. 8... Sprocket 10... Frame number counter 11... Second counter 16... Counter window 20... Geneva gear 21... Display board 22... Opening 23... Paper box.

Claims (2)

[Claims] (1) In a film unit with a lens, which is intended to be returned to a processing laboratory after use and then reused with new film inside, the number of film frames that rotate at a certain angle in conjunction with the winding of one frame of film. A second counter is provided which is linked to the rotation of the counter and advances by one section per rotation of the film frame number counter, so that the number of times of recycling can be determined based on the advance of the second counter. A film unit with a lens that is characterized by: (2) The lens-equipped film unit according to claim 1, wherein the second counter is provided with a recording section for recording data such as date.