JPH02304538A - Camera with data imprinting function - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention (Field of Application of the Invention) The present invention utilizes a plurality of light emitters such as LEDs arranged in a vertical line in a direction perpendicular to the film feeding direction to generate a dot matrix pattern during film feeding. This invention relates to the improvement of a camera with a data imprinting function for imprinting characters.

(Background of the Invention) Conventionally, a plurality of adhesives and EDs are arranged in a vertical line to constitute an imprinting optical system using an imaging lens, and data imprinting is performed by driving the LEDs during film feeding. Various cameras have been implemented for this purpose. Most of them use a method in which an LED is installed on the back cover side and images are printed from the base surface of the film. In addition, some proposals have been made to imprint data from the emulsion side of the film, but in order to make the camera more compact, there is no flexibility in the positioning of the LED, and data imprinting must be done outside the photographic optical path. In order to do this, it is necessary to layout it in a narrow space between the aperture and the spool chamber or the aperture and the cartridge chamber.

Therefore, in the latter type of system, it is not possible to increase the size of the hard board on which the LED is attached, and a small board separate from the main board on which the camera control IC, etc. is mounted must be created. , LEDs are mounted on the board and used as a dedicated LED board, which is connected to the main board using a flexible board, which complicates mounting and assembly, increases the number of parts to be mounted, and increases costs. It had some problems.

In addition, in the latter method, if the data imprinting optical system is installed near the spool chamber, the tension of the film when it is wound onto the spool and the sudden rise in the direction of the spool from the end of the inner rail of the camera body will be reduced. Combined with this bending, a phenomenon occurs in which the film curves toward the front of the camera as it travels, causing the film surface to shift from the predetermined imaging position and shift toward the front, causing the captured data to become out of focus. There was a problem with this.

This is shown in Figures 5 to 7, and Figure 5 is the 7th figure.
The figure shows a vertical cross section (A-A cross section) of the data imprinting section 104 shown in the figure, and as can be seen from the figure, the camera body 1
Imaging lens 10 for imprinting attached to 00
Although the image formation position of 1 is at point A, the inner rail 100
Since the film 103 running in the space between the step a and the outer rail 100b is curved to the front, a phenomenon occurs in which the focusing accuracy deteriorates accordingly.

That is, in the space (tunnel interval) between the inner rail 100a and the outer rail 100b of the camera body 100, the film 1.3 is kept flat within the photographing screen by the pressure plate 102; As shown in FIG. 5, the film 103 becomes more curved as it moves outside the screen, that is, at a position farther away from the aperture in the film feeding direction, particularly closer to the spool chamber. Further details will be explained with reference to FIG.

This amount of curvature is larger for the first frame of the film and smaller for the last frame of the film. In other words, when the film 103 is first wound onto the spool 200, the film winding diameter is 203.
Since the angle θ1 at which the film 103 is pulled from the end of the inner rail toward the spool 200 is small, the amount of curvature increases as the film 103 moves further away from the inner rail contact portion (see Fig. 5). However, near the final frame of the film, the film winding diameter 204 becomes large, and therefore the angle θ2 at which the film 103 is pulled toward the spool 200 becomes small, and the amount of curvature also becomes small.

Note that 102 represents a pressure plate, and 202 represents a spool chamber.

(Object of the Invention) An object of the present invention is to provide a camera with a data imprinting function that solves the above-mentioned problems, makes mounting the camera extremely simple, reduces the number of mounted parts, and reduces costs. That's true.

Another object of the present invention is to provide a camera with a data imprinting function that can eliminate out-of-focus imprinted data due to fluctuations in the optical axis direction of the film during film feeding.

(Characteristics of the Invention) In order to achieve the above object, the present invention provides a plurality of light emitters and driving means on a substrate disposed on the outer periphery of the spool chamber or cartridge chamber of the camera, or on various types of the camera. Arrangement on a board on which electric circuit elements are mounted, and connection work with a dedicated board for arranging the plurality of light emitting bodies and driving means, or a board on which various electric circuit elements of a camera are mounted, for example. , is characterized by eliminating the need for connecting parts for this purpose.

In addition, a film guide member having the same function as the guide rail on the camera body side is provided on the inside surface of the film winding opening of the spool chamber, so that the guide rail on the camera body side is configured as if it were extended, and the film It is characterized by reducing the fluctuation of the film in the optical axis direction during feeding.

(Embodiments of the Invention) Hereinafter, the present invention will be described in detail based on illustrated embodiments.

FIG. 1 is a simplified sectional view showing an embodiment of the data imprinting camera of the present invention, and FIG. 2 is a perspective view of the main parts thereof.

In FIGS. 1 and 2, 1 is a camera body, 2 is a camera cover, and 3 is a back cover having a hinge 6. 4 is a spool, 5 is a cartridge, and 7 is a lens barrel, which includes a front group optical system 8 and a rear group optical system 9 that constitute a zoom optical system. 10 is a pressure plate, 11 is a pressure plate spring, 12 is a roller for autoloading when loading a film, 13 is a pressure spring for urging the roller 12 toward the spool 4, 14
is a film. 17 is an LED for data imprinting, and a plurality of LEDs are arranged in a vertical line (perpendicular to the paper surface) on the board 15.
A mask member 16 having a diaphragm opening is provided on the front side of the LED I 7, and the mask member 16 has an aperture opening.
It serves to prevent the light distribution angle of the projection light from 17 from becoming wide and to prevent the occurrence of reflected light from the walls around the data imprinting optical path as much as possible.

19 is an IC for controlling the camera body 1, 18
is an imaging lens that directs the light from the LED 17 to the camera body 1.
An image is formed on the film 14 through the data imprinting optical path hole. Reference numeral 21 denotes a roller for detecting the amount of movement of the film 14, and by rotating without slipping in contact with the film 14, the amount of movement of the film 14 can be detected as the amount of rotation. A slitting machine 22 has a slit that rotates integrally with the roller 21, and is configured to detect the slit using a photointerrupter 23. A roller pressing spring 20 is provided at a position opposite the roller 21 with the film 14 in between, and serves to constantly press the film 14 against the roller 21 while the film is running. Note that the roller presser spring 20 is integrated with the above-mentioned suppressor spring 13. Reference numeral 24 denotes a film guide member (FIG. 3 shows a perspective view thereof), which is fixed to the side surface of the spool chamber 26 of the camera body l on the side of the aperture 25, and serves as a rail 24a for extending the inner rail la of the camera body 1. have. By extending the inner rail 1a, the flatness of the film at the data imprinting and imaging position is ensured, and out-of-focus can be prevented.

Next, FIG. 4 is a simplified cross-sectional view showing another embodiment of the present invention, in which the same parts as in FIG. 1 are designated by the same reference numerals, and only the different parts will be described.

35 is a plurality of LEs provided in a vertical row in the vertical direction of the camera.
D, it is provided on the substrate 31 together with its drive circuit (not shown). The substrate 31 is connected to the aperture 2 of the spool chamber 26.
LED 3
5 is bent by 90 degrees through a total reflection prism 30, and then passes through an imaging lens 18 to form a data projection optical path. Further, 33 is a light shielding member for positioning the total reflection prism 30 and for blocking light from the LED 35 from leaking from the data imprinting optical path to the aperture 26. Mask member 3 having a diaphragm aperture that has the same effect
4 are integrally formed.

Note that 32 is a camera control IC, which is also mounted on the board 31. By arranging the substrate 31 parallel to the optical axis in this manner, it is possible to make the thickness D of the camera thinner than that of the camera shown in FIG. 1.

According to this embodiment, the camera control I
An LED is provided on the main board on which C is placed, and the board is placed in front of the spool chamber parallel to the film surface as shown in Figure 1, or on the aperture side next to the spool chamber as shown in Figure 4. Since it is arranged parallel to the photographing optical axis, it is possible to have a relatively long data optical path length, and a so-called LED is equipped with a new dedicated board on which only the LED and its drive circuit are mounted. Board and camera control IC
This eliminates the need to connect the camera to the main board on which it is mounted using a flexible board, etc., and has the advantage that camera mounting is extremely simple and the number of mounted components is reduced.

This also reduces assembly man-hours.

In addition, by providing a film guide member on the inside of the spool chamber to extend the inner rail of the camera body toward the spool chamber, it is possible to reduce fluctuations in the optical axis direction of the film during film feeding, making it possible to It is possible to prevent the stored data from becoming out of focus.

(Modified example) In this embodiment, in order to reduce the number of mounted components and simplify the work, an example is shown in which a board 15° 31 on which LEDs etc. are mounted is placed on the outer periphery of the spool chamber 24. A similar effect can be obtained even on the cartridge chamber 5 side.

(Effects of the Invention) As explained above, according to the present invention, a plurality of light emitting bodies and driving means are mounted on a substrate disposed on the outer periphery of the spool chamber or cartridge chamber of the camera, or on various electric circuits of the camera. Arrangement on a board on which the elements are mounted, and connection work with a dedicated board for arranging the plurality of light emitting bodies and driving means, or a board on which various electric circuit elements of a camera are mounted, for example. Since the connecting parts are not required, camera mounting becomes extremely simple, the number of mounted parts can be reduced, and costs can be reduced.

In addition, a film guide member having the same function as the guide rail on the camera body side is provided on the inside surface of the film winding opening of the spool chamber, so that the guide rail on the camera body side is configured as if it were extended, and the film By reducing the fluctuation of the film in the optical axis direction during feeding,
It is possible to eliminate out-of-focus imprint data due to fluctuations in the optical axis direction of the film during film feeding.

[Brief explanation of drawings]

FIG. 1 is a simplified cross-sectional view of a camera with data imprinting function that is an embodiment of the present invention, FIGS. 2 and 3 are perspective views of its main parts, and FIG. 4 is another embodiment of the present invention. A simplified cross-sectional view of a certain camera with data imprinting function, Fig. 5 is a vertical cross-sectional view of a conventional camera with data imprinting function at the data imprinting position, and Fig. 6 similarly shows the film winding state in the spool chamber. The perspective view shown in FIG. 7 is also a perspective view of the spool chamber side. 1... Camera body, 5... Patrone chamber, 7... Lens barrel, 8... Front group optical system,
9... Rear group optical system, 10... Pressure plate, 1
5... Board, 17... LED. 18... Imaging lens, 19... Camera control IC524... Film guide member, 2
5... Aperture, 26... Spool chamber, 31... Board, 35... LED.

Claims (7)

[Claims] (1) A plurality of light emitters arranged in a vertical line in a direction perpendicular to the film feeding direction outside the photographing optical path and their driving means for imprinting data on the film surface, and a drive means for supplying light from the plurality of light emitters. In a camera with a data imprinting function that is equipped with an imprinting optical system for forming an image on the surface of the film being transported, the plurality of light emitters and driving means are disposed on the outer periphery of a spool chamber or a patrone chamber of the camera. A camera with a data imprinting function, characterized by being placed on a printed circuit board. (2) A plurality of light emitters arranged in a vertical line in a direction orthogonal to the film feeding direction outside the photographing optical path and their driving means for imprinting data on the film surface, and a drive means for supplying light from the plurality of light emitters. In a camera with a data imprinting function, which is equipped with an imprinting optical system for forming an image on the film surface during transport, the plurality of light emitters and driving means are placed on the film surface of the outer peripheral part of the spool chamber or cartridge chamber of the camera. A camera with a data imprinting function, characterized in that it is placed on a board parallel to the surface. (3) A plurality of light emitting bodies arranged in a vertical line in a direction orthogonal to the film feeding direction outside the photographing optical path and driving means for the light emitting bodies for imprinting data on the film surface, and supplying light from the plurality of light emitters. In a camera with a data imprinting function, which is equipped with an imprinting optical system for forming an image on the film surface during transport, the plurality of light emitters and driving means are connected to the photographing light of the outer periphery of the spool chamber or cartridge chamber of the camera. A camera with a data imprinting function characterized by being placed on a board that is placed on a plane parallel to the axis. (4) A plurality of light emitters arranged in a vertical line in a direction orthogonal to the film feeding direction outside the photographing optical path and a driving means for the light emitters for imprinting data onto the film surface, and supplying light from the plurality of light emitters. In a camera with a data imprinting function that is equipped with an imprinting optical system for forming an image on the surface of the film being transported, the plurality of light emitters and driving means are disposed on the outer periphery of a spool chamber or a patrone chamber of the camera. A camera with a data imprinting function, which is arranged on a board on which various electric circuit elements of the camera are mounted. (5) A plurality of light emitters arranged in a vertical line in a direction orthogonal to the film feeding direction outside the photographing optical path and a driving means for the light emitters for imprinting data onto the film surface, and supplying light from the plurality of light emitters. In a camera with a data imprinting function, which is equipped with an imprinting optical system for forming an image on the film surface during transport, the plurality of light emitters and driving means are placed on the film surface of the outer peripheral part of the spool chamber or cartridge chamber of the camera. A camera with a data imprinting function, which is arranged on a board on which various electric circuit elements of the camera are mounted, which is arranged on a plane parallel to the camera. (6) A plurality of light emitters arranged in a vertical line in a direction orthogonal to the film feeding direction outside the photographing optical path and a driving means for the light emitters for imprinting data on the film surface, and supplying light from the plurality of light emitters. In a camera with a data imprinting function, which is equipped with an imprinting optical system for forming an image on the film surface during transport, the plurality of light emitters and driving means are connected to the photographing light of the outer periphery of the spool chamber or cartridge chamber of the camera. A camera with a data imprinting function, which is arranged on a board on which various electric circuit elements of the camera are mounted, which is arranged on a plane parallel to the axis. (7) A plurality of light emitting bodies and their driving means arranged in a vertical line in a direction orthogonal to the film feeding direction between the spool chamber of the camera and the photographing optical system for imprinting data on the film surface; In a camera with a data imprinting function, the camera is equipped with an imprinting optical system for forming an image of light from a light emitter onto the film surface being fed, and a guide rail for guiding the film to a spool chamber. A camera with a data imprinting function, characterized in that a film guide member having the same function as the guide rail is provided on the inner surface of the film winding opening of the chamber.