JPH05265141A - Film unit with lens and its production - Google Patents

Abstract

PURPOSE:To obtain a film unit with a lens and its manufacture, so as to save the handling time of checking work and efficiently recycle the whole of a unit main body at low cost. CONSTITUTION:The unit main body 2 is mainly and plastically molded, and the whole of the main body 2 is covered with an outside case 3, and further, a waterproof transparent shrink film 4. A lens aperture 10 and an aperture for winding 11 are formed at positions corresponding to the lens holder 5 of the shrink film 4 and a fork 7a, provided projectingly on the lower part of a winding knob 7, respectively. The lens aperture 10 has a small diameter than the outer periphery of a lens fitting seat holder 5, and the lens holder 5 is restrained so as to hold the shrink film 4 between the lens holder 5 and the inside wall of a lens fitting seat 12.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a structure suitable for recycling a lens-fitted film unit and a method for manufacturing the film unit.

[0002]

2. Description of the Related Art A film unit with a lens, "Shakenrun Hi" (trade name), which has a built-in film in advance in a unit body with a simple photographing mechanism so that a photograph can be taken easily at any time, is from the applicant. Manufactured and sold,
Widely used. This lens-fitted photo film unit has a very simple structure as known from Japanese Patent Publication No. 2-332615, and after photography, the DPE can be requested for each film unit as in the case of the conventional photo film. ing.

In these film units with lenses,
An unexposed film pulled out from the cartridge between the main body for accommodating the film and the back cover is spread to the exposure position between the film roll chamber and the cartridge chamber. When the unexposed film that has been pulled out in advance in the film unit and stored in a roll is exposed, it is taken up in the patrone every time it is taken, and when it is finished shooting all frames, it is completely stored in the patrone. Can be stored in.

On the other hand, the reuse of the lens-fitted film unit is being actively promoted at present. When the user takes the film unit with the lens containing the film already taken to the developing shop, these are further collected at the developing place, where the lid for taking out the film is opened and only the film is taken out, and the film is developed. Print processing is performed. After the film is taken out, the lens-fitted film unit is collected again by the manufacturer, and for reuse, the paper box covering the unit body is once peeled off and disassembled into individual parts. The peeled paper box is reused as recycled paper.

Various proposals have been made regarding the reuse of the unit body. For example, the unit body proposed in Japanese Patent Application No. 3-167741 is an exposure mechanism such as a photographing lens, a film winding mechanism, and a shutter mechanism. The main body part in which the is incorporated is sandwiched between the front cover and the rear cover, and the exposure mechanism having a high added value has a structure that can be easily removed for reuse. Also, regarding the lens-fitted film unit in which the strobe device is incorporated, a pair of metal pieces forming the X-contact for strobe emission are held by the lens holder so that the strobe device can be easily removed, and the terminal of this section is attached. The printed board is extended to the printed board holding means side so that the printed board is inserted and fixed.

[0006]

However, the above-mentioned Japanese Patent Application No. 3-167741 does not mention the reuse of the front cover and the rear cover, and the above-mentioned proposal regarding the reuse is merely a lens. The reuse of parts of the attached film unit is stopped. From the viewpoint of recycling, it is preferable to reuse the entire lens-fitted film unit as it is. However, in order to recycle the entire device in a defect-free state, it is inevitable to re-inspect each part, and in particular, careful inspection of the lens, which is an important part of the imaging mechanism, is required. Such inspection requires a great deal of time and money, and there is a problem that efficient recycling becomes difficult to put to practical use.

Further, in consideration of recycling, keeping the collected parts of the lens-fitted photo film unit clean is an effective means because it reduces the burden of inspection work after the collection. For waterproofing, the technology to cover the entire film unit with lens with a waterproof cover is
-16150. However, there was no description of a structure suitable for recycling. After all, in order to recycle the entire unit body, it is necessary to inspect the shooting lens, but in order to perform this lens inspection,
The front cover must be removed and the taking lens must be removed, which makes inspection work troublesome.

The present invention has been made in consideration of the above problems of the prior art. Regarding recycling of a lens-fitted photo film unit, laborious inspection work is reduced, and recycling of the entire unit body is put into practical use efficiently and at low cost. An object of the present invention is to provide a lens-fitted film unit that can be manufactured and to propose an effective manufacturing method thereof.

[0009]

In order to achieve the above object, in claim 1, a lens-fitted film unit having an unexposed film previously built therein and having a unit body having a photographing mechanism such as a photographing lens and a shutter is provided. A lens holder for holding the taking lens is detachably attached to a lens mounting seat provided on the front surface of the unit body, and the unit body is covered with a transparent cover having an opening at the mounting seat portion. Further claim 2
Then, the inner diameter of the opening of the transparent cover is made smaller than the outer diameter of the outer periphery of the lens holder so that the opening edge portion of the transparent cover is covered when the lens holder is mounted on the mounting seat.

According to a third aspect of the present invention, the transparent cover is recorded with information on the manufacturing date or the expiration date of the film incorporated in the unit body. In Claims 4 and 5, the inside of the transparent cover that covers the unit main body is further covered with a wrapping body having an opening at a required portion necessary for photographing, and the film take-out opening portion of the wrapping body is provided. It is provided with an opening or a lid for taking out the film. Then, in claim 6 and claim 7, as a method for manufacturing a lens-fitted film unit according to the present invention,
After covering the unit body with a transparent cover in which the mounting seat portion is open (or after covering the unit body with a packaging body having an opening in a predetermined portion necessary for photographing, and further covering with a transparent cover). The lens holder is fixed to a mounting seat on the front surface of the unit body.

In still another aspect of the present invention, as another manufacturing method,
A necessary part of the unit body necessary for photographing is covered with a peelable sheet, a transparent cover is formed by spraying, and after the peelable sheet is removed, the lens holder is fixed to a mounting seat on the front surface of the unit body. It was done like this. Further, in claim 9, as a manufacturing method by recycling, after removing the lens and lens holder of the used lens-fitted film unit and peeling off the transparent cover, the unit body is loaded with an unexposed film and covered with a new transparent cover. After that, the lens holder is fixed to the mounting seat on the front surface of the unit body.

[0012]

Embodiments of the present invention will be described below with reference to the drawings. 1 and 2 showing a lens-fitted film unit according to the present invention, a unit main body 2 is mainly made of plastic and is entirely covered with a wrapping body 3 and is further covered with a waterproof transparent shrink film 4. .. Therefore, the packaging body 3 does not need to be subjected to a treatment such as gluing. The wrapping body 3 is for making the outer appearance of the lens-fitted film unit clean, and a paper box or the like having an outer surface printed with operational instructions is used. The package 3 is provided with holes for exposing the lens holder 5, the shutter button 6, the winding knob 7, the finder window 8, and the display window 9 for confirming the number of remaining films. It can be done.

A 135 film with a cartridge is preloaded in the unit main body 2, and a shutter mechanism for exposing the film, a simple film winding mechanism and a counter mechanism are built in, and the photographic film cartridge 2 is used.
The unexposed film pulled out from No. 1 is exposed, and the exposed film is wound up in the photographic film cartridge 21. After shooting all frames, the photographer takes the film unit with lens to the development store and requests a DPE.

The shrink film 4 has the property of shrinking due to heat, and it can be shrunk and covered tightly by covering it with heat and applying heat.
Moreover, since it has a certain degree of flexibility, the shutter button 6 can be operated through the shrink film 4. Shrink film 4 lens holder 5
A lens opening 10 and a hoisting opening 11 are provided at a position corresponding to (1) and a position corresponding to the fork 7a formed on the lower portion of the hoisting knob 7, respectively. Further, as shown in FIG. 2, the film manufacturing date 20 is set at a position where the side surface of the unit main body 2 of the shrink film 4 is covered.
Is printed.

In the state where the entire lens-fitted film unit is tightly covered with heat, the lens opening 10 of the shrink film 4 is opened to have a diameter smaller than the outer diameter of the lens holder 5 as shown in FIG. , Its open end 10
a projects into the lens mounting seat 12. Lens holder 5
A ridge 5a is formed on the outer periphery of the opening end 10
While sandwiching a with the inner wall of the lens mounting seat 12,
It engages with a circumferential groove 12a formed in the lens mounting seat 12. Since the opening end 10a of the shrink film 4 is sandwiched between the lens holder 5 and the lens mounting seat 12, the waterproof property of the lens opening 10 portion is enhanced. An exposure opening 14 is formed in the lens mounting seat 12 on the optical axis 13 of the taking lens 5b integrally formed with the lens holder 5, and the taking light flux passing through the exposure opening 14 is exposed to the film by the shutter mechanism. It

The winding opening 11 corresponding to the fork 7a provided at the lower portion of the winding knob 7 has a fork 7a.
Since it has an inner diameter slightly larger than the outer diameter of a, it does not hinder the turning operation of the winding knob 7. The fork 7a is adapted to engage with one end of a spool that is rotatably provided in the photographic film cartridge 21, and an O-ring is provided at a contact portion with the unit main body 2 so as to be light-tight and waterproof. It has a well-known structure that does not easily slip out while maintaining

On the rear surface of the unit main body 2, as shown in FIG. 3, a photographic film cartridge 21 is installed.
A back cover 23 is provided for taking out from 2. Therefore, a take-out lid 24 for opening the back lid 23 is provided on the bottom surface of the package 3 so as to be openable and closable. Since the take-out lid 24 portion is also covered with the shrink film 4 during photographing, it is not necessary to fix it by gluing or the like.
If a film string or the like is provided at a portion of the shrink film 4 corresponding to the take-out lid 24, for example, at a take-out port of a transparent vinyl film that covers a cigarette box,
The shrink film can be easily removed.

A method for manufacturing the lens-fitted film unit configured as described above will be described. The unit body 2 manufactured by the same manufacturing process as the conventional technique is first covered with the package 3, and then the shrink film 4 is covered and heated to tightly cover the whole. The lens holder 5 is inserted into the lens mounting seat 12 so as to sandwich the opening end 10a of the lens opening 10 formed in the shrink film 4.
The protrusion 5a formed on the outer periphery of the lens holder 5 and the circumferential groove 12a formed on the inner wall of the lens mounting seat 12 are pushed in until they are completely engaged. Further, the winding knob 7 is provided in the winding opening 11 formed in the shrink film 4.
The fork 7a is inserted and engaged with one end of the spool housed in the cartridge.

When the photographer who has taken a picture using the lens-fitted film unit manufactured in this manner observes the display window 8 to confirm that the shooting of all frames has been completed, the winding knob 7 is turned on. By operating until it stops rotating, all the exposed film is wound up in the cartridge. When the photographer requests the DPE from the photofinishing shop together with the lens-fitted photo film unit, these are further collected at the photo lab. Here, the bottom portion of the shrink film 4 is peeled off, the take-out lid 24 provided at the bottom portion of the package 3 is opened, and the back lid 23 for taking out the photo film cartridge 21 provided in the unit main body 2 is removed.
Can be opened.

Further, instead of the take-out lid 24 on the bottom surface of the package 3, an opening for exposing the photo film cartridge 21 take-out back lid 23 provided on the unit main body is provided, and a photograph is taken through the opening. It is also possible to take out the film cartridge 21. Since the exposed film is completely stored in the photographic film cartridge 21, if the back cover 23 is opened, it is easy to take out only the photographic film cartridge 21 in the bright room from the cartridge room 22 provided in the unit main body 2. be able to.

The photographic film cartridge 21 taken out at the developing station is subjected to print development and printing processing in the same manner as a photographic film cartridge photographed by an ordinary camera.
The resulting print picture is handed to the photographer through a photo shop. On the other hand, photo film Patrone 2
The film unit with a lens after taking out 1 is collected from the developing place by the manufacturer and sent to the process for reuse. Since the collected film unit with lens was tightly covered with the shrink film 4,
Since the unit body 2 and the packaging body 3 are less dirty or damaged, they can be used as they are. However, since the lens holder 5 is a component directly related to photographing, it needs to be replaced with a new one. The winding knob 7 is a portion that comes into direct contact with the photographer's hand at the time of photographing, and is frequently used, so that the winding knob 7 is replaced with a new one.

In the process of reuse, first, the lens holder 5 and the winding knob 7 are removed, then the shrink film 4 covering the whole is peeled off, and then a new film is once packed for loading into the unit main body 2. Peel off body 3. At this time, the package body 3 is wrapped and pressed by the shrink film 4 in the completed lens-fitted film unit, so that it can be easily peeled off because it is a fitting type without gluing. Depending on the degree of damage, it is determined whether the package 3 should be reused or replaced with a new package 3.

When a photographic film cartridge containing a new unexposed film is loaded in the unit body 2, the unit body 2 is covered again, and the shrink film 4 is covered again by heating and the whole is tightly covered by heating. Then, install the new lens holder 5 into the lens mount 12 as described above.
Insert and engage new winding knob 7 in place. However, since the winding knob 7 does not directly contribute to photographing, it can be reused even if it is slightly dirty or scratched, so it can be used as it is. According to this recycling process, most of the parts of the lens-fitted film unit can be recycled.

In the above-described embodiment, the wrapping body 3 is covered under the shrink film 4, but the wrapping body 3 can be formed by color printing except the visible portion without making the entire shrink film 4 transparent. Is unnecessary. By reducing the number of parts without covering the package 3, the manufacturing cost of the lens-fitted film unit is reduced, and the manufacturing process is also reduced. Therefore, the present invention can more effectively supply a large amount of inexpensive lens-fitted film units. Further, in the above-described embodiment, the winding knob 7 is inserted into the upper surface of the lens-fitted photo film unit, but it may be incorporated into the unit main body 2 so that the shrink film can be operated via 4. Although the lens holder 5 is also integrally molded in this embodiment, the holder portion and the photographing lens portion may be manufactured separately.

FIG. 5 shows a lens holder 30 and a lens mounting seat 31 which are different from those of the above-described embodiment. A holder portion 30c is integrally formed so as to surround the taking lens 30b of the lens holder 30. Holder part 3
0c includes a locking portion 3 provided on the lens mounting seat 31.
Locking claw 3 that engages with 1a and positions in the optical axis 32 direction
0a is provided. Optical axis 3 between the locking portions 31a
An exposure opening 33 is provided on the surface 2. The unit body 2 provided with the lens mounting seat 31 is covered with the packaging body 3 and the shrink film 4 as in the above-described embodiment. An opening having an inner diameter smaller than the outer diameter of the lens holder 30 is formed in the shrink film 4 so as to surround the lens mounting seat 31, and the opening edge portion 4a is covered by the holder portion 30c.

According to the lens holder 30 and the lens mounting seat 31, the lens holder 30 and the lens mounting seat 31 are engaged so as to be positioned in the direction of the optical axis 32. Therefore, it is possible to prevent an optical deviation each time the lens holder 30 is attached or detached. Further, the wrinkles of the opening edge portion 4a formed when the shrink film 4 is thermally contracted are covered with the holder portion 30 and do not appear in the appearance, so that the appearance does not deteriorate. Although the lens holder 30 is integrally formed as in the above-described embodiment, the holder portion and the photographing lens portion may be separately manufactured. Furthermore, the lens holder 5 of the above-described embodiment and the lens holder 3 of the present embodiment.
Even in the case of 0, the types of the taking lenses 5b and 30b of the lens holders 5 and 30 to be replaced can be replaced with another type of lens (for example, a wide-angle lens or a telephoto lens) at the time of recycling.

In the above two embodiments, the heat shrinkable shrink film 4 is coated on the unit main body 2 as a transparent cover, but the transparent cover can be formed by spraying by the process shown in FIG. A lens-fitted film unit in a manufacturing process, in which a unit body 2 assembled by a conventional process is covered with a packaging body 3 such as a paper box, and a peelable sheet is first used in a photographing operation of the unit body 2 in a first step 41. Attach it to the required parts (eg lens mount, shutter button, winding knob, etc.). Next, in a second step 42, a transparent film having a substantially uniform thickness is sprayed and formed on the package 3 by a transparent cover forming spray. Third
In step 43, the peelable sheet attached in the first step 41 is peeled off together with the unnecessary transparent cover. In the final fourth step 44, the lens holder is attached to the mounting seat of the unit body 2.

If the transparent cover is formed by spraying as described above, many products can be manufactured in a shorter time than the case of covering the unit main body with the shrink film. As described above, the transparent cover covers the unit body (or the package that covers it).
By covering the film, it is possible to prevent the unit body and the package from being damaged or soiled, and it is easy to reuse many parts of the lens-fitted film unit. In addition, as shown in FIG. 2 illustrating the first embodiment, the manufacturing date and expiration date of the film, or the number of times of recycling are printed on the transparent cover to effectively use the lens-fitted film unit manufactured by reuse. can do.

[0029]

As described above, according to the lens-fitted film unit of the present invention, in the lens-fitted film unit in which the unit body is covered with the transparent cover, the lens holder for holding the photographing lens is provided in the unit body. It is detachable from the mounting seat, and an opening having a diameter smaller than the outer diameter of the lens holder is formed in a part of the transparent cover corresponding to the lens mounting seat so that the lens holder covers the opening edge of the transparent cover. Therefore, the film and the taking lens (and the winding knob if necessary) can be recycled simply by exchanging them, and most parts of the lens-fitted film unit can be effectively reused.

Further, in the manufacturing method, since the unit body is covered with the transparent cover or the packaging body and the new photographing lens is mounted together with the lens holder, the photographing lens inspection which is the most important optical system inspection is unnecessary. become. Further, according to the manufacturing method, in which a necessary portion of the unit body necessary for photographing is covered with a peelable sheet, a transparent cover is formed by spraying, and the lens holder is attached after removing the sheet, the lens can be more efficiently and cost-effectively. The attached film unit can be recycled.

[Brief description of drawings]

FIG. 1 is a perspective view in which a lens-fitted film unit embodying the present invention is partially disassembled and peeled off.

2 is an external perspective view of the lens-fitted film unit shown in FIG. 1. FIG.

FIG. 3 is a perspective view from the bottom of the lens-fitted film unit shown in FIG.

FIG. 4 is a cross-sectional view of essential parts of the lens-fitted film unit shown in FIG.

FIG. 5 is a cross-sectional view of essential parts of another embodiment of the lens-fitted film unit according to the present invention.

FIG. 6 is an explanatory view of a part of the method for manufacturing the lens-fitted film unit according to the present invention.

[Explanation of symbols]

 2 unit body 3 package 4 shrink film 5,30 lens holder 5a ridges 5b, 30b shooting lens 7 winding knob 10 lens opening 11 winding opening 12 lens mounting seat 12a circumferential groove 24 extraction lid 30a locking claws 41-44 1st to 4th steps

Claims (9)

[Claims] 1. A lens-fitted film unit having an unexposed film built-in in advance and comprising a unit body having a photographing mechanism such as a photographing lens and a shutter, and a lens holder for holding the photographing lens is provided on the front surface of the unit body. A lens-fitted film unit characterized in that it is detachably attached to a provided lens mounting seat, and that the unit body is covered with a transparent cover having an opening exposing the mounting seat portion. 2. The inside diameter of the opening of the transparent cover is smaller than the outside diameter of the outer circumference of the lens holder, and covers the opening edge portion of the transparent cover when the lens holder is mounted on the mounting seat. The film unit with a lens according to 1. 3. The lens-fitted film unit according to claim 1, wherein the transparent cover has recorded therein information about a manufacturing date or an expiration date of a film contained in the unit body. 4. The transparent cover is covered on a wrapping body covering the unit main body, and the wrapping body has an opening for exposing a required part necessary for a photographing operation and a taken-out part of a photographed film. The film unit with lens according to claim 1, wherein the film unit with lens is formed. 5. The transparent cover is covered on a wrapping body covering the unit main body, and the wrapping body includes:
2. The lens-fitted film unit according to claim 1, further comprising: an opening for exposing a required portion required for a shooting operation and a lid for opening and closing a taken-out portion of the film that has been shot. 6. A method of manufacturing a film unit with a lens, which comprises a unit main body having a photographing mechanism such as a photographing lens and a shutter, in which an unexposed film is built in advance, and a lens holder for holding the photographing lens is provided in the unit main body. The lens mounting seat provided on the front surface of the unit is detachable, and the unit body is covered with a transparent cover having an opening at the mounting seat portion, and then the lens holder is fixed to the mounting seat on the front surface of the unit body. A method for manufacturing a film unit with a lens, characterized by: 7. The method of manufacturing a lens-fitted film unit according to claim 6, wherein the unit main body is covered with a packaging body having an opening at a predetermined portion necessary for photographing before being covered with the transparent cover. 8. A method of manufacturing a film unit with a lens, which comprises a unit main body having a photographing mechanism such as a photographing lens and a shutter in which an unexposed film is built in advance, wherein a lens holder for holding the photographing lens is provided in the unit main body. After detaching the lens mount seat provided on the front of the unit, covering the necessary parts of the unit body necessary for shooting with a peelable sheet, forming a transparent cover by spraying, and removing the peelable sheet. A method for manufacturing a film unit with a lens, comprising fixing a lens holder to a mounting seat on the front surface of the unit body. 9. The lens and lens holder of a used film unit with a lens are removed, the transparent cover is peeled off, an unexposed film is loaded on the unit main body and covered with a new transparent cover, and then the lens holder is attached to the unit. A method for manufacturing a lens-fitted film unit, characterized in that it is fixed to a mounting seat on the front surface of the main body.