JPH0743709Y2 - Film unit with lens - Google Patents

Description

[Detailed Description of the Invention] [Industrial field of application] The present invention is pre-loaded with a film cartridge and has a lens-equipped film unit equipped with a photographing mechanism for exposing the film cartridge. The present invention relates to a film unit with a lens that can be imprinted on.

[Conventional technology]

A film unit with a lens that has a built-in photo film and has a simple shooting function so that you can easily take pictures even when you are not carrying a camera (for example, the product name "Sharan-run Hi" ) Is commercially available. This lens-fitted film unit (hereinafter abbreviated as a film unit) achieves an extremely low cost by omitting a film rewinding mechanism and a reloading mechanism, and by using the minimum necessary parts and materials.

There is known such a low-cost film unit in which, for example, characters (a logo mark or the like) such as a product name and illustrations can be imprinted on the screen. This film unit has a triangular sheet member made of a transparent plastic sheet, and bends its two sides at a right angle by a predetermined width to form a glue margin, and affixes it to the corners of the inner wall of the aperture with double-sided tape. Characters, illustrations, etc. are printed on the part protruding inside.

[Problems to be solved by the device]

By the way, the mounting position of the sheet member needs to be a position as close as possible to the film surface so that characters and illustrations can be clearly printed and not to interfere with the film feeding. However, the above film unit has a drawback that it is difficult to position the sheet member when it is fixed, and the mounting position is easily displaced. Further, when the temperature of the environment of use is high, the pressure-sensitive adhesive of the double-sided tape fixing the sheet member becomes sticky, so that there is a possibility that the pressure-sensitive adhesive may adhere to the film surface and stain the film.

[Purpose of device]

The present invention has been made to solve such a problem, and a sheet member for imprinting characters and illustrations can be accurately and easily attached at a predetermined position, and by providing the sheet member, the film is provided. It is an object of the present invention to provide a film unit with a lens that does not stain the film.

[Means for Solving the Problems]

In order to achieve the above object, the film cartridge of the present invention comprises a film roll chamber for storing unexposed film in a roll shape and a cartridge for rotatably storing a spool having one end of the film fixed. The exposure chamber which is formed between the film cassette chamber and the film roll chamber and the exposure chamber which defines the exposure range of the film, and which is attached to the corner of this exposure frame, and which is projected in the exposure screen to the triangular portion. A transparent sheet member on which characters and marks are written and a protrusion for attaching the transparent sheet member to the exposure frame by heat caulking are formed, and the distance between the attached transparent sheet member and the film surface is within a predetermined range. And a recess formed so as to be maintained.

[Action]

According to the configuration of the lens-fitted film unit described above, the transparent sheet member on which characters and marks are written is thermally caulked in the recess formed in the corner of the exposure frame, so that the mounting position of the transparent sheet member is the formation of the recess. It is uniformly determined by the position, there is no room for indefinite elements such as manual adjustment, and the work of attaching the transparent sheet member can be performed accurately and easily.
In addition, since no adhesive is used, it does not become sticky and stain the film.

Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

〔Example〕

Referring to FIG. 2 showing the outer appearance of a film unit according to an embodiment of the present invention, the film unit has an exterior body in which the unit main body 2 is made of paper or the like in the shape of a box, or is wound in a paste-like shape (hereinafter, for simplicity). It is used in the state of being wrapped in "paper box" 3. The paper box 3 has a release button 4, a winding knob 5, an object side viewfinder window 6, and an eyepiece side viewfinder window 7.
(See FIG. 1), holes for exposing the taking lens 8 and the film counter 9 are provided so that the photographing operation can be performed through these holes.

In FIG. 1 showing an exploded perspective view of the unit main body 2, the unit main body 2 is assembled by fixing a front cover 11 and a rear cover 12 to a main body 10 by an automatic assembling machine or the like. The main body 10, the front cover 11, and the back cover 12 are each made of plastic. The main body part 10 includes a cartridge chamber 15 for loading the cartridge body 14 of the film cartridge 13 and a film chamber 18 for storing a film roll 17 obtained by winding the film 16 drawn from the cartridge body 14 in a roll shape. Is arranged at the end of.

An exposure frame 19 for exposing the film 16 is formed between the cartridge chamber 15 and the film chamber 18. Film rails 21 and 22 are formed on both sides of the exposure frame 19, and a part of the film rail 22 is cut as shown in the figure. Hook-shaped recesses 23 are formed in the corners of the exposure frame 19 including the cut portions, and thermal caulking projections 24 and 25 are formed in both corners of the recesses 23.

The sheet member 26 is heat-crimped to the protrusions 24 and 25 through the holes 26a and 26b corresponding thereto. The sheet member 26 is formed of a transparent plastic sheet, and characters, illustrations, etc. are printed on the substantially central portion thereof. Therefore,
Recess the sheet member 26 so that the protrusions 24 and 25 enter the holes 26a and 26b.
When the sheet member 26 is placed on the table 23 and the projections 24 and 25 are deformed by heat, the sheet member 26 is fixed in the recess 23 and characters and illustrations are projected into the photographing area as shown in FIG.

In the recess 23, the sheet member 26 is formed by the film rails 21 and 22.
Is formed slightly deeper than the thickness of the sheet member 26 so as not to project from the upper surface of the sheet member 26. Since the sheet member 26 is brought into close contact with the bottom surface of the recessed portion 23 when it is fixed, the distance from the film surface depends on the depth of the recessed portion 23 and does not depend on the working accuracy at the time of attachment. Therefore, the sheet member 26 is accurately fixed at a constant position at which the distance from the film surface is too short to damage the film surface, and conversely it is too far to blur the imprinted image of characters or illustrations. It

In the vicinity of the film rail 21, a sprocket 28 that engages with the perforations 16a of the film 16 and is rotated to drive the film counter 9 and charge the shutter 28.
Is provided. There is a hole at the top of the cartridge chamber 15.
A film winding shaft 31 integrally molded with the winding knob 5 is formed via 15a. When the film cartridge 13 is loaded in the cartridge chamber 15, the film take-up shaft 31 is fitted to the tip of the spool 32 rotatably incorporated in the cartridge body 14.

A film supporting portion 33 having a concave shape is integrally formed inside the back cover 12 as a holding portion of the film surface at the exposure position of the film 16. The main body 10 and the back cover 12 are fixed to each other by the claws 3 provided on the bottom portion 10b of the main body 10.
4, 35 and holes 36, 37 provided at the end of the back cover 12, holes 38, 39 provided near the finder window 10c of the main body 10, and claws 41, 42 provided inside the upper portion of the back cover 12. And are engaged with each other.

The operation of the film unit of the present invention constructed as above will be described. Sheet member with characters and illustrations
To attach 26 to the exposure frame 19, attach the protrusion 2 as described above.
The sheet member 26 is dropped in the recess 23 so that the holes 4, 25 enter the holes 26a, 26b. Then, the projections 24, which are projected from the holes 26a and 26b,
Heat the tip of 25 to deform it. As a result, the sheet member 26 is heat-crimped to the exposure frame 19, and the distance between the sheet member 26 and the film surface is defined by the depth of the recess 23, so that stable and good imprinting can be performed. Further, the positions of characters and illustrations on the shooting screen are determined by the positions of the protrusions 24, 25 and the holes 26a, 26b, so that they will not be varied by the assembly work.

As described above, the cartridge body 15 is loaded in the cartridge chamber 15 and the film roll 17 is loaded in the film chamber 18 of the main body 10 having the sheet member 26 attached thereto, and the back cover 12
After closing, the unit body 2 is wrapped in a paper box 3 to complete the film unit of the present invention.

When the release button 4 is pressed with the taking lens 8 facing the subject, the shutter mechanism is driven and the subject image is exposed to the exposure frame 19
An image is formed on the film surface set in, and at the same time, characters and illustrations such as the logo mark "Japan" are imprinted on the screen corner. The exposed film 16 is caught in the cartridge main body 14 every time one frame is photographed, and all the films 16 are stored in the cartridge main body 14 after the photographing is completed.

The user requests the developing unit to develop the film unit in this state. At the developing station, after the paper box 3 is peeled off from the unit main body 2, the back cover 12 is removed, the used film cartridge 13 is taken out, and a necessary developing process is performed. As a result, a photographic print 45 with a logo mark as shown in FIG. 4 can be obtained.

In the embodiment described above, the characters and illustrations were imprinted in the upper right corner of the photographic print, but if the formation position of the recess 23 is changed and the mounting position of the sheet member 26 is changed, the position where the characters and illustrations are imprinted Can be set arbitrarily. In addition, the characters and illustrations to be imprinted are not limited to monochrome, and it is of course possible to color them.

[Effect of device]

As described above, according to the film unit of the present invention, the transparent sheet member on which characters and illustrations are written is attached to the concave portion formed in the exposure frame by thermal caulking, so that the attaching position of the transparent sheet member becomes accurate. Installation work becomes easy. Further, since the transparent sheet member is attached by heat caulking without using an adhesive, there is an effect that there is no inconvenience such as stickiness at a high temperature and soiling of the film.

[Brief description of drawings]

FIG. 1 is an exploded perspective view showing a state in which a back cover is removed from a unit body according to an embodiment of the present invention. FIG. 2 is a perspective view showing the appearance of the embodiment shown in FIG. 1 with a part thereof cut away. FIG. 3 is a plan view of relevant parts showing the relationship between the exposure frame and the sheet member according to the embodiment shown in FIG. FIG. 4 is a plan view showing an example of a photographic print taken by the embodiment shown in FIG. 2 …… Unit main body 10 …… Main body 19 …… Exposure frame 23 …… Concave 26 …… Sheet member.

Claims (1)

[Scope of utility model registration request] 1. A film roll chamber for accommodating an unexposed film in a roll, a patrone chamber for loading a patrone rotatably accommodating a spool having one end of the film fixed, a film roll chamber and a patrone. An exposure frame that is formed between the chamber and defines the exposure range of the film,
A transparent sheet member attached to a corner of the exposure frame and having characters and marks written on a triangular portion protruding in the exposure screen, and a projection for attaching the transparent sheet member to the exposure frame by thermal caulking are formed. A lens-equipped film unit having a concave portion formed so that the distance from the attached transparent sheet member to the film surface is maintained within a predetermined range.