JP2994765B2 - Data imprinting device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a data imprinting apparatus for imprinting data such as date on a film surface,
The present invention relates to an improvement in a data imprinting device for imprinting data on a film surface in synchronization with running of the film.

[0002]

2. Description of the Related Art Conventionally, a plurality of light emitting elements arranged in a direction orthogonal to a film running direction are driven in synchronization with running of a film, and data characters in a so-called dot matrix configuration are printed on the film surface. Various types of data imprinting devices have been proposed.

FIGS. 6 and 7 show a conventional example, FIG. 6 is a perspective view of a main part thereof, and FIG. 7 is a top view thereof. Figure 6
In FIG. 7, 1 is a film cartridge, 2 is a film, 2a
Is an aperture, 3 is a film feed detecting roller fixed to a pulse plate 5 for detecting a film feed amount by a photocoupler via a shaft 4, and 6 is disposed at a position facing the film feed detecting roller 3. A film pressing roller 7 urged in the direction of the arrow by a spring (not shown) to press the film 2 toward the film feed detecting roller 3; and a film pressing roller 7 is disposed on the spool 9 side separated from the aperture 2a. Pulse plate 5 during the winding run for each frame
An LED array, which is driven in synchronization with a signal from the camera and prints dot matrix data onto the film 2 via the imaging lens 8, is arranged inside the camera body 10. I have.

[0004]

However, in the above-mentioned prior art, the portion of the film feed detecting roller 3 and L
Since the imprinting portion including the ED array 7 and the imaging lens 8 and the like is disposed at different places, the film feed detection roller 3, the LED array 7, the imaging lens 8 and the LED array 7 An optical path space or the like through which light passes is required, space efficiency is low, and this has been an obstacle to downsizing the camera.

[0005]

According to the present invention, there is provided a data imprinting apparatus for imprinting data in a dot matrix on a film surface in conjunction with running of a film. The roller that rotates in conjunction with the shape of a hollow, the light from the light-emitting member is passed through this hollow part, and finally reflected on the film side to print the data, so the space for the printing optical path Is overlapped with the space where the film feed detection roller exists, and the space efficiency can be improved.

[0006]

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

FIG. 1 is an enlarged view of a portion A of FIG. 4 which best describes the features of the embodiment, FIG. 2 is a front view of a camera provided with a data imprinting device according to the embodiment, and FIG. FIG. 4 is a left side view of FIG. 2.

In these figures, reference numeral 11 denotes a camera body,
D is a data projection device, 12 is an AF unit, 13 is an AF light receiving unit, 14 is a finder unit, 15 is a strobe unit, 16 is a shutter release button,
7 is a spool for winding a film drawn from a patrone (not shown), 18 is a motor housed in the spool 17 for feeding the film, 19 is a fork which engages with a shaft of the patrone (not shown), G Is motor 1
Gear train for transmitting the rotation of 8 to the fork 19, 11
Reference numeral a denotes a lens barrel in which a photographic optical system (not shown) is stored, and reference numeral 20 denotes a pressure plate for pressing the film against the aperture.

Next, the detailed structure of the data imprinting device D will be described with reference to FIG. In the figure, 2
Reference numeral 3 denotes a roller holding base plate fixed to the camera body 11;
Reference numeral 1 denotes a substrate on which an LED array 22 is fixed on its lower surface. A substrate 21 is attached to a roller holding base plate 23. A reference numeral 24 denotes a hollow cylindrical member made of a synthetic resin such as PC (polycarbonate) which comes into contact with the film F. Laura,
It is rotatably mounted between a roller receiver 27 (described later) and a roller holding base plate 23. Reference numeral 25 denotes a pulse plate integrally fixed to the roller 24. The amount of movement of the film F is detected by detecting the rotation amount of the pulse plate 25 by a photocoupler 26 (FIG. 2). Reference numeral 27 denotes a roller receiver fixed to the camera main body 11, and reference numeral 28 denotes a roller holder which is attached between a lower portion of the roller receiver 27 and a prism lens 29 (described later) to remove a final flare of light from the LED array 22. A dot mylar 29 is attached to the lowermost end and is a prism lens for bending the light from the LED array 22 emitted downward to the camera body toward the emulsion surface side of the film F by approximately 90 °.
The dot mylar 28 and the prism lens 29 are fixed by being sandwiched between the camera body 11 and a roller receiver 27 fixed to the camera body 11. The prism lens 29 is provided integrally with lens surfaces 29a and 29b and a reflection surface 29c. As shown in the figure, a light-shielding line 24a having, for example, irregularities having a triangular cross section is formed on the inner peripheral surface of the roller 24, and serves as a flare cut of light passing through the hollow portion of the roller 24. I have. Further, the roller receiver 27 serves to fix the prism lens 29 and the dot mylar 28, and
Similarly to the above, a flange portion 27a having a hollow shape and having a substantially triangular cross section protruding inward is provided, and serves as a stop for preventing flare of light passing through the inside. 3 is a leaf spring having an arcuate abutting portion at its tip. The tip of the leaf spring 30 is pressed and urged toward the roller 24, and a film is placed between the leaf spring 30 and the roller 24. F is inserted.

The substrate 21 to which the LED array 22 is fixed
The roller 24 needs to be located at a position closer to the rear (film side) with respect to the camera body 11 as shown in FIG. 3 due to its configuration. Since it is the spigot portion E between the lid 40 and the camera body structure 41, the back lid 40 must be formed in a protruding shape to the rear of the camera as it is, and the camera becomes large. Therefore, in the present embodiment, as shown in FIG. 5, the ribs 31 on the camera body side are made thicker as shown by G, so that the substrate 21 is accommodated therein and the back lid 32 is prevented from protruding. . In addition, the interval between the ribs 32 and 33 of the spigot portion of the back lid 32 is changed depending on the location. In FIG. 7, reference numeral 34 denotes a camera body cover, and reference numeral 35 denotes another base plate. In FIG. 8, reference numeral 42 denotes a camera body cover.

Next, the operation of the apparatus of the present invention having the above configuration will be described. When the shutter release button 16 is pressed, a known exposure control circuit operates to operate the shutter, thereby exposing the subject to the film surface. When this operation is completed, the motor 18 is energized to start winding the film F, the roller 24 and the pulse plate 25 rotate, and the photocoupler 26 generates a signal. The LED drive circuit (not shown) operates in synchronization with this signal, and the LED array 2
2 is driven, and data such as year, month, and date by the dot matrix are transferred onto the running film F by a known method. At this time, the LED array 22 shown in FIG.
The light emitted vertically downward passes through the hollow portions of the roller 24 and the roller receiver 27 and enters the prism lens 29 through the opening of the dot mylar 28. The light thus incident is bent by the reflection surface 29c and finally condensed on the emulsion surface side (left side in FIG. 1) of the film F, and the data is printed.

In the above embodiment, the reflecting surface of the prism is used to bend the light emitted from the LED array toward the film surface. However, a mirror may be used.

In the above embodiment, a data imprinting apparatus for imprinting data by a dot matrix in synchronization with the running of a film is shown. However, the present invention can be applied to any type of data imprinting apparatus. Needless to say.

[0014]

According to the present invention as described above, the following effects can be obtained. 1. The rotation axis of the roller for detecting the film feeding is hollow, and the light emitted from the LED array is passed through the hollow part, thereby eliminating the volume of the optical path and improving the space efficiency in the camera. In other words, the most significant feature is that the space where the rollers exist and the space required for the optical path for imprinting the LED to pass are overlapped. 2. The light from the LED array does not simply pass through the space inside the camera as in the past, but passes through the hollow part of the roller, so it is possible to form a light shielding line on the inner peripheral surface of the roller and perform flare cutting. it can.

[Brief description of the drawings]

FIG. 1 is an enlarged view of a part A of FIG. 4 showing a data imprinting apparatus according to an embodiment of the present invention.

FIG. 2 is a front view of a camera provided with a data imprinting device according to the embodiment of the present invention.

FIG. 3 is a top view of FIG. 2;

FIG. 4 is a left side view of FIG. 2;

5 is a left side sectional view of the camera of FIG. 2;

FIG. 6 is a schematic perspective view of a conventional example.

FIG. 7 is a plan view showing the arrangement in the camera of the conventional example.

FIG. 8 is a left side sectional view of the conventional camera.

[Explanation of symbols]

 22 LED array 24 Roller 27 Roller receiver 29 Prism lens D Data imprinting device F Film

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G03B 17/24

Claims (5)

(57) [Claims] 1. A data imprinting apparatus which imprints data in a dot matrix form on a film surface in conjunction with the running of a film, wherein a roller which abuts on the film surface and rotates in conjunction with the running of the film is hollow. A data imprinting device having a shape, wherein light from a light emitting member is passed through the hollow portion, and the data is finally reflected on the film side to imprint data. 2. The data imprinting device according to claim 1, wherein a pulse plate for detecting film feeding is integrally provided on said roller. 3. The data imprinting device according to claim 1, wherein an uneven portion for shielding light is formed on the inner peripheral surface of the hollow portion of the roller. 4. A prism lens having a lens for forming an image of light from the light emitting member and a prism having a reflecting surface for reflecting light from the light emitting member to a film finally. The data imprinting device according to claim 1. 5. The data imprinting device according to claim 1, wherein the substrate on which the light-emitting member is mounted is cut into a light-shielding inlay portion composed of a lid and a main body for loading a film. .