JP3182622B2 - Manufacturing method of film unit with lens - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is provided with a function of exposing and winding a film so that a photograph can be taken immediately on a pre-loaded film, and a non-exposed film is loaded again by a maker after use. The present invention relates to a method for manufacturing a film unit with a lens.

[0002]

2. Description of the Related Art In recent years, a so-called lens-equipped film unit (hereinafter also referred to as the present camera), which is sold with a simple plastic camera loaded with a silver halide color photosensitive material, has become widespread. This frees the trouble of loading a film into an ordinary camera and the failure due to a loading error, and also increases the chance of taking a picture due to its simplicity. Also, with a strobe, telephoto,
Ultra wide angle type etc. have been developed and put into practical use.

Heretofore, as is well known, a film unit with a lens is a simple camera in which a photosensitive material is previously loaded by a maker, and a user uses the film unit only for photographing one loaded photosensitive material. Since a film unit with a lens is sent to a developing laboratory with the photosensitive material stored therein, the camera is made with a very simple structure and the cost is reduced.

Therefore, the lens-fitted film unit body and some parts are made of lightweight plastic, and have the advantage of being portable, but are designed to withstand only one use. Was.

[0005] Therefore, the film unit with the lens is usually sent to a photofinishing lab with the exposed film remaining after the user shoots the film, where the film is separated from the camera body, developed and printed, and provided to the user. Passed. On the other hand, the camera body had been collected from the lab and discarded. Or, one step further, some or all were crushed for recycling.

However, to increase the effective use of resources,
The most effective recycling method (reuse) is to reload the unexposed film as it is into the recovered camera body and supply it to the user again as a lens-equipped film unit as proposed by the present applicant. It is rare.

[0007]

However, the collected cameras often have scratches and dirt on their appearance, and in terms of functions, they often consume batteries and malfunction the mechanism. Therefore, before loading and providing the unexposed film again, the quality, cleanliness, and beauty of a new product must be guaranteed in advance.

The present invention has been made with attention paid to this point, and as a result of examination, the appearance and function of the collected camera have been systematically inspected and maintained to realize a practical quality assurance method for a film unit with a lens. Is provided.

[0009]

Above object In order to achieve the above, after the notated Irumu is removed prior to use camera loaded with unexposed film in a state of photographable advance is used, with recovered the lens film A method for manufacturing a film unit with a lens in which another unexposed film is loaded into a unit in a photographable state, after removing static electricity from the collected film unit with a lens, checking a strobe unit, Thereafter, an unexposed film is loaded in a photographable state, thereby achieving a method of manufacturing a film unit with a lens. In addition, a film unit with a lens which has been loaded with an unexposed film
After notated Irumu is removed, a recovery process for the preparation of a lens-fitted film unit for loading different unexposed film in a state of capable of shooting in the lens-fitted film unit, recovered the lens-fitted film unit After the cleaning and static elimination are performed, the strobe unit is checked, and then the unexposed film is loaded in a photographable state. You. Additionally, previously unexposed film photographable after state lens-fitted film unit loaded in the was taken out before being used notated Irumu, it recovered the photographable another unexposed film to the lens-fitted film unit A method for manufacturing a film unit with a lens to be loaded in a state, wherein the appearance of the collected film unit with a lens is checked and the film unit with a lens is excluded if the level is below a predetermined level. After cleaning and removing static electricity from the lens-equipped film unit, check the strobe unit, optical system, and shutter, and then load the unexposed film in a state ready for shooting. This is achieved by a method of manufacturing a film unit with a lens.

[0010]

FIG. 1 shows the appearance of a film unit with a lens according to the present invention (hereinafter also referred to as the present camera), that is, a film-integrated camera. The camera is loaded with 35 mm film (J135) in advance and sold. After the shooting, the film is sent to the lab without being rewound and is stored in the camera and developed and printed.

The unexposed film used in the present camera is loaded in a state in which the film is inserted into the patrone, and after the camera is brought into a light-tight state, the winding shaft on the side of the film winding chamber is driven to drive the film inside the patrone. The entire film is wound into a film winding chamber.
The user winds up the film that has been shot in the patrone by winding the film each time shooting is performed.
Therefore, in the lab, the photographed film can be taken out of the camera as a patrone in a bright room.

[0012] In addition, take out the photographed film,
This can be easily performed by bending a part of the outer shell member. Therefore, if the manufacturer replaces the back cover, a new unexposed film can be loaded and reused, that is, used as a reuse camera.

As the patrone to be loaded into the camera, a patrone having an outer diameter of φ20.6 mm different from a commonly used patrone (JIS K7528) is used. The following description will be made using this small patrone, but the present invention is not limited to this and can be applied to a normal patrone.

As a result, the thickness of the camera can be suppressed to about 24 mm except for the lens barrel having the photographing lens, thereby realizing an ultra-thin compact camera.

The camera is provided with a cardboard carton on which a product name, a simple usage method, and the like are displayed on a part of its outer surface.

FIG. 2 is a developed view showing the structure of the camera.

Reference numerals 10, 20, and 30 denote a camera main body, a front cover, and a back cover, respectively, which are main components of the camera. Reference numeral 40 denotes a built-in flash unit.
Numerals 70 and 70 denote film winding, sector charge and film counter mechanisms, respectively.

When the camera body 10 is used alone, the film winding mechanism 50, the sector charging mechanism 60, and the members constituting the film counter mechanism 70 are mounted, and a shutter case 11 for accommodating a sector is mounted.

The shutter case 11 is fixed by engaging claws 11A protruding from both sides with a locking portion 10A on the front surface of the camera body 10, and connects the sector to the sector charging mechanism 60.

Further, on the front surface of the shutter case 11, a photographing lens 12 with a focal length f = 30 mm and a stop of F9.5 which is a single lens having a focal length f = 30 mm is provided, and a slide 13A which engages with a guide pin 11B is provided. Covered by the lens holder 13.

The camera body 10 and the shutter case 11 described above.
Is made of a black matte plastic material having some elasticity, including the front cover 20 and the back cover 30 described above.

On the other hand, the strobe unit 40 is mounted and supported on the basis of holes 40A and 40B on the board which engage with guide pins 10B and 10C on the front of the camera body 10, respectively.

In the strobe unit 40, upper and lower battery sections 41, which are integrated, are inserted into upper and lower slit holes 10D of the camera body 10 and protrude into the battery chamber on the back side of the camera body 10, so that an AA battery E as a strobe charging power source is provided. Sandwich.

The integrated capacitor C is stored in a capacitor chamber formed below the shutter case 11.

The lens holder 13 and the strobe unit 40
Is fixedly integrated with the camera body 10 by mounting the front cover 20 on the camera body 10.

Prior to mounting the front cover 20 on the camera body 10, the objective lens 21 of the finder is dropped on the front surface thereof in advance and fixed by the engagement of the decorative cover 22. The makeup cover 22 has a guide pin 22A and four claws 22B on the back.
With holes 20A and 4 on the front of the front cover 20, respectively.
It is engaged with the locking portion 20B at the location and is attached.

The front cover 20 is further mounted on the front surface of the camera body 10 after engaging and mounting an eyepiece 23 of a finder on the rear surface.

The front cover 20 has a hole 20C, a claw 20D, and three locking portions 20E on the rear surface, and a guide pin 10E and a claw 10F on the front surface of the camera body 10 and a locking portion 10G on the side surface. Engage and attach.

By engaging the front cover 20 with the camera body 10, the lens holder 13 and the flash unit 40 are fixed to the camera body 10.

The camera body 10 with the front cover 20 attached
The cartridge P15 and the spool S2 with the leading end of the unexposed film F are respectively loaded in a cartridge chamber 15A and a scroll chamber (film winding chamber) 15B formed on the back surface.

The other end of the film F is locked on a spool S1 in the cartridge P1, and even if the film in the cartridge is once wound up by the spool S2 after the film is loaded, the other end is locked on the spool S1. Therefore, it can be wound into the patrone P1 every time the photographing is completed.

A back cover 30 is attached to the back of the camera body 10 loaded with the film F, so that the light shielding of the film F and the restriction on the focus surface position are maintained.

The back cover 30 has claws 30A and 30B on its front surface and locking holes 30C and 30D on its side surface.
The claw 30A and 30B are the locking parts of the camera body 10
Holes 30C and 30D on the other hand are 10H and 10J,
K and 10L are engaged and fixed.

After the back cover 30 is mounted, a predetermined film winding operation is performed to set a photographable screen, and the screen is completed by mounting the carton shown in FIG.

Next, the details of the film winding mechanism 50, the sector charging mechanism 60, and the film counter mechanism 70 will be described.

FIG. 3 shows the above-mentioned respective mechanisms at angles viewed from the back side of the camera.

The camera body 10 has two cartridge chambers for film winding and film loading in the same plane on both sides of a screen frame 16 as an exposure unit.
A and a scroll chamber 15B are provided, and a J135 film F wound around a patrone P as a storage container shown in FIG. 4 is loaded.

The film F used in the camera of the embodiment is a roll film J135 or a slightly thin roll film of 130 to 140 μm like a general camera, and a spool of the cartridge P1 is previously stored in a dark room or the like using the cartridge as a storage container. The end portion is fixed to S1, and a predetermined number of frames are wrapped in a length that can be photographed, and a film of a certain length comes out from the film drawer of the cartridge P1. The film in this state is loaded into the camera. The loading method will be described below.

The patrone P1 is loaded into the patrone chamber 15A such that the spool S1 of the patrone P1 engages with the fork of the hoisting fork 52. On the other hand, the spool S2 is also inserted into the scroll chamber 15B. Then, the tip of the film notch FN of the film F is positioned at the index 17 below the lower rail surface.
Pull out the film F until it matches A, insert the leading end of the entire film F (as long as the other end does not separate from the spool S1 of the cartridge P1) into the slit SL of the spool S2 and hook the perforation P of the film F on the nail H. .

Next, the back cover 30 is put on the cover to make the cover light-tight.
Then, the camera in this state is attached to the film winding device, and the film F is wound around the spool S2 of the scroll chamber 15B, and the loading of the film is completed. That is, by loading the film F in this manner, the film F is sequentially wound into the patrone P1 for each photographing operation. The photographed film is wrapped in the patrone P1, leaving the required length without the roll wrapped in the patrone. Therefore,
This patrone can be taken out of the camera in a bright room.

Next, the mechanism of the main body will be described.

In the camera body 10, a film winding mechanism 50 including a photographing lens 12, a sector charging mechanism 60,
The main mechanism of the film counter mechanism 70 is incorporated therein.

First, the film winding mechanism and the sector charging mechanism will be described.

Reference numeral 51 denotes a film winding knob. The film F loaded as described above is wound by turning the film winding knob 51 counterclockwise. A cam 55 coaxial with an eight-tooth sprocket gear 54 meshing with the perforation P of the film F and having a fan-shaped cam portion 55B at the bottom.
Is rotated exactly one turn in the counterclockwise direction by winding the film.

That is, the film is wound up with the length of eight perforations, which is the number of teeth of the sprocket gear, as one frame, and the frame size is a so-called full size frame size of 24 × 36 mm.

The rotation of the cam 55 in the counterclockwise direction naturally rotates the sector cam portion 55B in the counterclockwise direction as described above. In the process, the charge lever 61 is moved by the sector cam portion 55B to the charge lever shaft 63. Is rotated clockwise against the spring force of the charge lever spring 64 that urges in the counterclockwise direction with the rotation axis as a rotation axis, and the rising portion 65B of the sector lever 65 is rotated by the triangular ketobashi 61C provided on the charge lever 61.
Is pressed, and eventually the vehicle gets over the rising portion 65B to charge the sector charging mechanism as shown in the figure.

The pin 65C of the sector lever 65 and the camera body 10
A sector spring 67 is stretched between the pins 18C provided on the sector lever 67.
The left end of the long hole is brought into contact with a pin 18B provided on the camera body 10 that guides the long hole slidably and rotatably, and the sector lever
The arm plate 65D provided on the camera body 10 is provided with a pin 18 provided on the camera body 10.
It comes into contact with E. A sector drive pin 65A for operating a sector 66 pivotally supported by a sector pin 18D provided on the camera body 10 is inserted into the fork of the sector 66.

As will be described later, the cam stopper after photographing is completed
The protrusion 62D of 62 is pulled out from the groove 55A of the cam 55,
The arm portion 57A of the hoisting stopper 57 changes from the state shown in the figure to change the arm portion 61A of the charge lever 61 and the arm portion of the cam stopper 62.
It comes off from each edge of 62A, and is in contact with the end face of the arm 61A by the spring force of the hoisting stopper spring 58 that urges clockwise. When the cam 55 rotates just once by the film winding as described above and the groove 55A of the cam 55 returns to the initial position, the spring force for urging the cam stopper 62 by the horizontal end of the charge lever spring 64 in the clockwise direction. As a result, the projection 62D of the cam stopper 62 jumps into the groove 55A. By this jumping operation, the locking of the arm portion 57A of the hoisting stopper 57, which has been locked on the end surface of the arm portion 62A of the cam stopper 62 at this time, is released.

The outer peripheral cylindrical surface of the film winding knob 51 is a ratchet gear. The film winding knob 51 jumps into the tooth space of the gear 51A, thereby preventing the film winding knob 51 from rotating in the counterclockwise direction. That is, when the film winding is completed, the film winding knob 51 is prevented from rotating further.

In the camera body 10, the tip of a reverse rotation preventing claw 53 utilizing the elasticity of a resin material is pressed against the ratchet gear 51A so as to prevent the film winding knob 51 from rotating in the opposite direction of winding. It has become.

By pressing the release button 25 of the front cover 20, a release button pin 25A implanted on the back of the release button 25
Operates in the direction of arrow A. That is, the front cover 20
When the camera is attached to the camera body 10,
By the operation of the tip of the release button pin 25A in the direction of arrow A described above, the hoisting stopper 57 rotates counterclockwise against the spring force of the hoisting stopper spring 58. Then, the arm portion of the charge lever 61 is moved from the end surface of the arm portion 57A of the hoisting stopper 57.
The edge of 61A is disengaged and the charge lever 61, and thus the cam stopper 62, is rotated counterclockwise by the spring force of the charge lever spring 64.

Then, the counterclockwise rotation of the charge lever 61 causes the ketobashi 61C of the charge lever 61 to rotate.
The rising portion 65B of the sector lever 65 is hit and comes off from the rising portion 65B. Therefore, the sector lever 65 rotates clockwise around the pin 18B in the long groove of the sector lever against the tensile force of the sector spring 67, and returns to the original position due to the tensile force of the sector spring 67. Therefore, the sector drive pin 65A rotates the sector 66 about the sector pin 18D to expose the film and close it.

On the other hand, the cam stopper 62 also rotates in the counterclockwise direction together with the charge lever 61 as described above.
The projection 62D of 62 comes out of the groove 55A of the cam 55. Therefore, even if you stop pressing the release button,
The arm portion 57A of the charge lever 61 is urged clockwise by the spring force of the hoisting stopper spring 58.
Is stopped by the end face of
The projection does not lock the ratchet gear 51A of the hoisting knob 51. Therefore, the next film winding can be performed.

Next, the film counter mechanism will be described.

As described above, 72 engages with the V groove 56A provided at the upper end of the cam shaft 56 implanted in the cam 55 which rotates integrally with the sprocket gear 54, so that the film is wound up by one frame and the cam shaft is rotated. Reference numeral 56 denotes an index gear that rotates clockwise by one tooth for each rotation.

On the upper surface of the index plate gear 72, an index plate 71 is printed as an integrally formed product, and the remaining number of shootable films is displayed from the film counter window 26 on the upper surface of the front cover 20.

A projection 72A is provided on the lower surface of the index platen gear 72, and when the film is wound next after a predetermined number of frames have been photographed, the projection 72A is brought into contact with the projection 61 of the charge lever 61.
E and another protrusion 62 </ b> E of the cam stopper 62, so as to break and enter. Then, the protruding portion 72 </ b> A is
The film is wound up by one frame by entering between E and 62E, and even when the cam 55 rotates once and the charging of the sector is completed, the two projecting portions 61E and 62E are brought into contact with the projecting portion 72A of the index wheel gear 72. The movement is blocked, the charge lever 61 cannot be operated, and the protrusion 62D of the cam stopper 62 is also in the groove of the cam 55.
You will not be able to jump into 55A. The arm portion 57A of the hoisting stopper 57 abuts on the end surface of the arm portion 62A of the cam stopper 62 by the spring force of the hoisting stopper spring 58, and the V-shaped protrusion at the tip of the hoisting stopper 57 locks the ratchet gear 51A. Also, it is impossible to operate the charge lever 61 to open and close the sector to expose the film.

When two frames of film are wound up in this manner, the index wheel 72 rotates by two teeth.
By this rotation, the projection 72A of the index plate gear 72 still holds the projection 61E to prevent the movement of the charge lever 61, but comes off the projection 62E of the cam stopper 62. Therefore, the protrusion 62D is formed in the groove 55A of the cam 55.
And the locking of the hoisting stopper 57 is released and the hoisting stopper
The winding knob 51 is locked by 57, and the film cannot be wound. Since the movement of the charge lever 61 is blocked as described above, the film cannot be exposed. In this way, the leading end of the film is prevented from being caught in the cartridge.

The camera that has completed the above-mentioned two-frame film empty winding is sent to the maker side, where a part of the back cover 30 is cut open in a bright room to take out the cartridge P1 containing the exposed film.

The camera from which the patrone P1 has been taken out is provided again as a camera capable of taking an image by performing the checking steps shown in FIG. 5 and the subsequent loading operation of a new unexposed film.

That is, the camera firstly removes the carton 100 in the process (1), receives a check for any scratches on the unit or dirt that cannot be removed, and allows the camera to be repaired or cleaned to be reused. And the impossible ones are discarded. (Even if it says disposal, it is a matter of course to reuse internal useful parts.) Then, in the process (2), the camera undergoes internal and external cleaning work. Prior to cleaning, the power supply battery E of the back cover 30 and the strobe unit 40 is removed, and the use of a neutralization brush removes dust and dust electrostatically attached to the plastic surface without damaging the plastic surface. Further, in the subsequent steps, it is necessary to prevent static electricity from remaining from the entire unit so that the charged dust and dust in the air do not adhere.

Subsequently, the function surface is checked, and the strobe unit 40, the photographic lens 12, the optical system such as the objective and the eyepiece, and the shutter unit are checked.

When the strobe unit 40 is checked in the process (3), a constant voltage power supply is used, and the charging time of the capacitor C and the amount of emitted light are measured, and those whose measured values are equal to or more than the specified value can be reused. Things are exchanged for new ones. Of course, the check in (3) is omitted in the lens-equipped film unit which does not include the strobe unit 40.

In the check of the optical system in the process (4), the focus of the photographing lens 12 and the quality of the finder visual field are determined. Good ones can be reused, and bad ones are replaced with new ones.

In the check of the shutter unit in the process (5), the reciprocating operation status of the sector 66 and the exposure time are measured, and if necessary, adjusted or replaced with a new one.

A battery is mounted on the camera determined to be reusable after each of the above check steps, and the unexposed film F in the state shown in FIG. 4 is loaded again in the process (6). New back cover in process 7)
After mounting the film 30, the film F is moved into the scroll chamber 15B by the film winding device described above in the process (8).
, And wound, so that shooting can be started immediately. At this stage, it is desirable to include a step of checking the strobe performance of the strobe. For example, it is preferable to check the light amount, the orientation, and the like.

Thereafter, the camera is again provided to the user by mounting the carton 100 again in the process (9).

The above embodiment of the manufacturing method for reuse is merely an example, and these steps are described in (3) and (4), for example.
The step (5) can be achieved even if the order is changed. However, the order of the above embodiment is the most preferred order. It is necessary to perform the cleaning process at least before the strobe unit check, the finder check, and the shutter unit check, and it is necessary to perform each check process in advance in order to enhance reliability, as described above. It is also preferable to insert a cleaning step or a cleaning step between each checking step so that dust and dust in the air do not adhere during the checking step.

Further, regarding the order of the check steps, it is possible to eliminate unnecessary check steps by first performing a check step that can find a failure or defect that may not be reusable. . The strobe unit is the most severely degraded unit, which is why it was positioned immediately after the cleaning process. The strobe unit can be attached to and detached from the main unit.
It can be checked early, replaced, and sent to the next process. In addition, the camera determined to be defective in the check goes into a recycling process, and the single unit, for example, as a single unit of the strobe unit 40, is reused in the case of a good unit.

[0070]

According to the first aspect of the present invention, since the check is performed after static electricity is removed, dust and dirt generated in the process can be prevented from adhering, and accurate inspection can be performed. Become. According to the second and third aspects of the present invention, the check is performed after the cleaning and the removal of the static electricity, so that the dust and dirt generated in the process can be prevented from adhering, and the dust and dirt can be prevented. As a result, items that were mistakenly rejected and were checked out were judged properly. In addition, it is possible to systematically check and maintain the quality and performance of cameras collected after use from a practical point of view, and as a result, a method of manufacturing a film unit with a lens that can be reused as a new camera on the product Will be provided.

[Brief description of the drawings]

FIG. 1 is an external perspective view showing a film unit with a lens according to the present invention.

FIG. 2 is a developed perspective view showing a configuration of the unit.

FIG. 3 is an exploded perspective view showing a film winding mechanism and the like of the unit.

FIG. 4 is an explanatory view of a film loaded in the unit.

FIG. 5 is a table showing check items of the unit.

[Explanation of symbols]

 10 Camera body 12 Shooting lens 20 Front cover 21 Objective lens 23 Eyepiece 30 Back cover 40 Strobe unit 66 Sector 100 Carton E Battery F Film P1 Patrone

──────────────────────────────────────────────────続 き Continuation of the front page (51) Int.Cl. ⁷ Identification symbol FI G03B 17/04 G03B 17/04 (56) References JP-A-63-199350 (JP, A) US Patent 5021811 (US, A) (58) Field surveyed (Int. Cl. ⁷ , DB name) G03C 3/00 G03B 15/05 G03B 17/04

Claims (3)

(57) [Claims] 1. A previously unexposed film use camera loaded in the state of the photographable is using a pre Symbol
After the full Irumu is removed, a recovery process for the preparation of a lens-fitted film unit for loading different unexposed film in a state of capable of shooting in the lens-fitted film unit, from the recovered the lens-fitted film unit A method for manufacturing a film unit with a lens, comprising: after removing static electricity, checking a strobe unit, and then loading an unexposed film in a photographable state. 2. A pre unexposed film use camera loaded in the state of the photographable is using a pre Symbol
After the full Irumu is removed, a recovery process for the preparation of a lens-fitted film unit for loading different unexposed film in a state of capable of shooting in the lens-fitted film unit, the recovered the lens-fitted film unit A method of manufacturing a film unit with a lens, comprising: checking a strobe unit after cleaning and removing static electricity; and loading an unexposed film in a photographable state. 3. A pre unexposed film use camera loaded in the state of the photographable is using a pre Symbol
After the full Irumu is removed, a recovery process for the preparation of a lens-fitted film unit for loading different unexposed film in a state of capable of shooting in the lens-fitted film unit, recovered in the lens-fitted film unit When the appearance is checked and the level is lower than a predetermined level, the film unit with the lens is excluded, and the film unit with the lens which is not excluded is cleaned and static electricity is removed. A method of manufacturing a film unit with a lens, comprising checking a system and a shutter, and thereafter loading an unexposed film in a photographable state.