JPS5850867B2 - Shashinshiyokujiki - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a phototypesetting machine using a reflected light typesetting method, and an object of the present invention is to provide a phototypesetting machine that is extremely easy to typeface and has good workability compared to the conventional typesetting machine.

Conventional phototypesetting machines generally perform typesetting using transmitted light.

FIG. 1 is a schematic diagram of such a phototypesetting machine using the transmitted light typesetting method.

The dial iVc has a large number of character symbols in a negative form, that is, the character lines are transparent and the non-character lines are black and opaque.
When the operator brings a desired character symbol to the printing position 3 and performs the necessary operations, the light from the photographing light source 4 is projected.

The character luminous flux generated by this light projection passes through the base 5, is magnified by an arbitrary main lens 7 in the main lens turret 6, which has an optical system with different magnification, and is further magnified by a shutter 8.
A desired character image is formed on the photoreceptor 10 wrapped around the magazine drum 9 by opening and closing.

Father, apart from the light source 4 for photography, a light source 11 for marking that emits soft light and a reflective plate 12 are installed below the dial 1. The symbol is illuminated from below.

Due to this irradiation, the operator saw the light passing through the character print area of the dial 1, identified the characters, and typed the characters.

However, such a writing system using transmitted light has the following drawbacks.

In other words, the contrast between the text line area through which the light passes and the black non-text line area is dazzling, causing flickering when the dial moves, and the irradiation distribution of the light source for marking varies depending on the distance from the light source. This depends on the reflectance of the reflector and is not uniform, which causes fatigue to the operator's eyes and degrades work efficiency, and is said to be unhealthy.

The present invention has been developed in view of these points, and is intended to perform character writing using reflected light from above the dial, rather than transmitted light as in the conventional case.

The feature is that the character film surface for photographing, in which multiple character image areas are transparent and non-character image areas are opaque, is placed on one side of a transparent substrate; A dial with a character marking film surface formed on the other side of the substrate and a common character print area is installed in the optical system, and an arbitrary image of the character print area for photographing is formed into an optical system image. In a phototypesetting machine that is attached to a photoreceptor set on a surface, the dial is irradiated from the photographic dial surface side, and an arbitrary image of the character image line is formed on the photoreceptor using the transmitted light. Two types of light sources are installed: a photographing light source that illuminates the dial, and a reflected light writing light source that illuminates the dial from the writing surface side and generates diffusely reflected light in the non-character printing line area. It is.

Figure 2 shows one example of this, and in this example, the dial 1 for reflective light writing as described in Japanese Utility Model Publication No. 1983-8335 related to the application filed by the applicant is used as the dial. It is being

This dial 13 is provided on the upper surface of the dial by arranging the character marking surface 15 on which the non-character printing lines are printed by silk screen printing or the like in the same arrangement as the character symbols on the character film surface 14 for photographing. It is something that

On the other hand, a reflected light writing light source 17 is installed on a lower cover 16 fixed to the lower part of the main lens turret 6, and illuminates the dial 13 from above.

If the above-mentioned device is used, the reflected light marking light source 17
The light from above the dial 13 is reflected and diffused by the buttons on the character marking film surface 15, so that the character symbols appearing on the character marking film surface 15 can be identified and written.

In other words, the light is reflected and diffused only in areas where there is a film surface such as silk screen printing, and almost no light is reflected and diffused in areas where there is no film surface, so non-text lines are bright and text lines are bright. The area looks dark.

In this way, even though the actual dial is negative, the characters can be viewed as positive when writing, making writing extremely easy.

Furthermore, the marking film surface 15 formed by screen printing or the like has fine irregularities on its surface, so that the reflected light is appropriately diffused and enters the operator's eyes with an appropriate contrast, thereby reducing glare.

Furthermore, this light source 17 for reflected light marking prevents uneven illumination on the top surface of the dial due to the shadow of the main lens turret, etc., and together with the lighting in the work room, it provides illuminance suitable for reflected light marking. By writing it on the top of the dial and trying to obtain as average information as possible, it is possible to distinguish only the characters near the printing position, as is the case with conventional transmitted light type marking.
A wide range of character symbols on the dial 13 are always distinguishable.

In this way, character marking performance is significantly improved compared to the conventional method.

Furthermore, the upper surface of the dial is brighter than before and has an appropriate illuminance, allowing operators to perform phototypesetting work with ideal brightness for their eyes, which also provides very favorable results in terms of the working environment.

Furthermore, the present invention is not limited to the above embodiments.

In short, the dial used in the present invention only needs to have a non-character print line area that has a much greater diffusivity to light from above the dial than the character print line area.

Further, as a light source for collecting reflected light, an annular fluorescent lamp may be installed below the main lens turret, or a tungsten lamp or an electroluminescent plate may be used.

Furthermore, by attaching a cloudy plastic cover or various filters to the light source and diffusing the light, it is possible to make the illuminance distribution on the upper surface of the dial uniform.

Furthermore, the installation position of the light source for marking is not limited to the position shown in FIG. 2.

For example, in FIG.
In the example with 9, similarly, Figures 4 and 5 show dial 2.
Light source for marking 21.23 on the upper rear and upper front of 0.22
This is an example where .

It is also possible to install a light source for marking above the main lens turret and use the main lens not used for photography to provide illumination, or use a reflector, so that the light source for marking and the dial can be used for illumination. When the distance is large, the light source may be directional.

In addition, the light intensity of the marking light source can be adjusted manually or automatically according to the brightness of the lighting in the work room, and a button on the dial can be pressed to ensure constant illuminance regardless of changes in brightness in the work room. It is also possible to do so.

In short, the light source for typesetting should be installed in such a way that it can illuminate from above the dial so that reflected diffused light can be obtained by writing on the non-character printing line part of the dial for reflected light typesetting. It is.

By attaching a light-shielding cover 24 or a filter as shown in FIG. 5, it is possible to prevent the light from the marking light source 23 from directly entering the operator's eyes.

Furthermore, Fig. 6 is a diagram showing an example of a preferable installation state of the light source for marking when using a dial for reflective light marking with a smooth upper surface, and Fig. 7 is a diagram showing an example of a preferable installation state of the light source for marking when using a dial with a smooth upper surface. FIG. 3 is a diagram illustrating illuminance distribution.

In Fig. 7, 25 indicates the position of the end of the dial near the operator, 26 indicates the position where the base mask is installed, and A indicates the dial is illuminated only by the lighting in the work room without using a light source for marking. This is the illuminance distribution curve that is shaded on the top surface of the dial when

According to this, it is slightly dark near the operator due to the influence of the operator's own upper body, is brightest at the center of the dial, and becomes darker as it moves toward the base mask position 26 due to the shadow of the main lens turret and the aircraft body.

Therefore, when installing the marking light source 27 above the front of the dial, it is better to place the marking light source 27 toward the machine body so that it can sufficiently illuminate the area with insufficient illumination near the base mask position, as shown in Figure 6. preferable.

However, in the case of a dial 28 with a smooth upper surface as shown in FIG. 6, the image of the light source 27 for marking is reflected on the upper surface of the dial 28 and may be seen by the operator.

That is, 29 is the path of light that is reflected at the limit position 30 and enters the operator's eyes when the dial 28 is moved closest to the operator. A situation arises.

In order to prevent this, the light shielding cover 32 is installed to cut off the light that forms a light source image that enters the operator's eyes, and at the same time prevents the direct light from the marking light source 27 from entering the operator's eyes. It also serves as a reflector for sufficiently irradiating the vicinity of the base mask 33 position.

By using the light source 27 for marking, the illuminance distribution on the upper surface of the dial 28 becomes as shown in FIG. Uphill and average.

In addition, when installing a light source for marking within the range of 35 in Fig. 6, there is no need to take any measures regarding the light source image on the top surface of the dial, but since the distance from the vicinity of the base mask position becomes large, it is necessary to reduce the light intensity. It is preferable to take measures such as increasing the directionality or increasing the directivity.

Although FIGS. 6 and 7 describe the case in which the writing light source is installed above the front of the dial, the case where it is installed above the rear of the dial can also be considered in the same way.

Furthermore, although the buttons of the present invention do not require a device for transmissive light marking as shown in Figure 1, by installing these devices and switching at will, it can be used to create a dial that is similar to a conventional dial. It is also possible to use it together with a dial for reflecting light.

In addition, it is possible to mount the marking light source removably or movably in order to use it in combination with the conventional dial as mentioned above, or to change the irradiation angle and position depending on the individual height of the operator. , is even more effective.

As described above, in the present invention, a dial is installed in an optical system, in which the character print line part is transparent and is placed on the lower side, and the non-character print line part is made light diffusive and is placed on the upper side. ,
In a phototypesetting machine, the image of the character image line is formed on a photoreceptor placed on the image forming surface of the optical system, the dial is irradiated from below, and the image of the character image line is formed on the photoreceptor. Two types of light sources are installed: a photographing light source that illuminates the dial from above, and a reflected light writing light source that illuminates the dial from above and generates diffusely reflected light in the upward direction of the dial by the non-character print line area. This is a characteristic feature.

This not only makes it possible to type the characters on the dial using reflected light, but also brightens the top surface of the dial and provides appropriate illuminance, which improves type writing and improves the operator's eyesight while marking. This has excellent effects on work efficiency and the working environment, such as reducing fatigue.

In addition, the characters on the negative dial can actually be viewed as positive, and the characters can be identified over a wide range.

[Brief explanation of drawings]

FIG. 1 is a schematic diagram of a conventional phototypesetting machine for transmissive light typesetting, and FIG. 2 shows an embodiment of the phototypesetting machine according to the present invention.
3.4 and 5.6 are explanatory diagrams showing the installation positions of the light sources for marking. FIG. 7 shows the illuminance distribution state on the upper surface of the dial. 13.18.20.22.28... Dial (for reflected light writing), 17.19, 21.27... Light source for writing.

Claims (1)

[Scope of Claims] 1. A character film surface for photographing in which a plurality of character image line areas are transparent and non-character image line areas are opaque is placed on one side of a transparent substrate, and the non-character image area is made light scattering. A dial with a character marking film surface formed on the other side of the substrate and a common character print area is installed in the optical system, and an arbitrary image of the character print area for photographing is formed into an optical system image. The dial is irradiated from the photographic dial surface side using a phototypesetting machine connected to a photosensitive material placed on the surface,
a photographic light source that forms an arbitrary image of the character image area on a photoreceptor using the transmitted light; and a photographic light source that irradiates the dial from the character recording surface side to produce diffusely reflected light in the non-character image area. A phototypesetting machine characterized by being equipped with two types of light sources: a light source for typesetting using reflected light;