JPS597581B2 - How to create text on a phototypesetting machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for creating blank letters in a phototypesetting machine.

In newspapers, magazines, and other printed materials, envelope characters such as the one shown in Figure 3e are often used as heading characters.

Conventionally, in order to create such bag letters, after obtaining a positive image of the desired character using a phototypesetting machine, a thick negative image was created using equipment known from Japanese Patent Publication No. 36-13014, etc.
The letters on the bag were created by overlapping the two and printing them onto a photosensitive material.

Not only did this method require many work steps, but it also required a very high level of skill and skill to make the outlines forming the letters uniform in thickness.

On the other hand, in order to solve this problem, it is possible to prepare a dial that accommodates the envelope characters created in advance, but considering the types of fonts and the number of Japanese characters, it is difficult to prepare a dial that accommodates a wide variety of envelope characters. This had the opposite effect as it made the unit price extremely expensive.

The present invention was developed in view of these points, and it is possible to easily operate the phototypesetting machine in the same way as normal printing without preparing a special dial for the phototypesetting machine or using any other equipment. This allows for the creation of envelope characters.

FIG. 1 is a schematic diagram of the optical system of a phototypesetting machine for explaining the method of the present invention, in which 1 is a light source, 2 is a condensing lens, 3 is a dial, 4 is a character housed in the dial 3, and 5 is an imaging lens.

Reference numeral 6 denotes a diffuser plate, and 7 a filter, which can be attached to and detached from the optical system as shown by the arrows in the figure.

Incidentally, the positional relationship between the diffuser plate 6 and the filter 7 is not limited to that shown in the figure and may be replaced.

Further, the two do not need to be in an integrated state, and it is sufficient that they are constructed and arranged so that the light beam for exposing the photosensitive material 8 passes through the diffuser plate 6 and the filter 7 before reaching the photosensitive material.

The structure of the photosensitive material 8 will be explained based on FIG.

The arrow indicates the direction of movement of the photographing optical system.

10 is an emulsion support, 9 is a positive-positive type (hereinafter P-P
11 is a negative/positive type (hereinafter referred to as N-P) emulsion layer.
The emulsion layers 9 and 11 are coated with emulsions having different color sensitivities.

The structure of the photosensitive material 8 is not limited to that shown in FIG. 2, and the positions of the emulsion layers 9 and 11 and the emulsion support 10 may be replaced with each other.

Alternatively, two emulsion supports may be prepared, each coated with each emulsion, and used in layers.

Next, the method for creating envelope characters according to the present invention will be explained based on FIGS. 1, 2, and 3.

It is assumed that the character 4 shown in FIG. 1 contains a negative character as shown in FIG. 3a, and the magnification of the photographing optical system is 1.

The color sensitivity of the P-P emulsion layer 9 is ortho, the color sensitivity of the N-P emulsion layer 11 is regular, and the filter 7 is green.

First, the first exposure is performed with the diffuser plate 6 and the green filter 7 inserted into the optical path.

When a suitable exposure is given by a light source 1, the light beam passes through a condensing lens 2 and illuminates characters 4 on a dial 3.

Since the character rAJ is in a negative state, the light beam passes only through the image line portion of the image, passes through the imaging lens 5, the diffuser plate 6, and the green filter 7, and reaches the photosensitive material 8.

Since the character image formed on the photosensitive material 8 passes through the green filter 7, only the PP emulsion layer 9 having orthochromatic sensitivity is exposed.

At the same time, the light flux also passes through the diffuser plate 6, so it is spread by a certain width, and the dial 3 is placed on the P-P emulsion layer 9.
Thickness Wa of the drawing part of the image of the letter "A" (Fig. 3 a)
A negative image of the character rAJ as shown in FIG. 3b having image line portions wbi and Wb2 thicker than those of 1 and Wa 2 is formed as a latent image.

Next, the diffuser plate 6 and the green filter 7 are extracted from the optical path and a second exposure is performed.

When a suitable exposure is given by the light source 1, the light flux passes through the condensing lens 2 and through the same image area of the letter rAJ (Fig. 3a) on the dial 3 as in the first exposure, resulting in a The photosensitive material 8 is directed through the image lens 5.

As a result, the N--P emulsion layer 11 having regular color sensitivity is exposed.

At this time, only the exposed areas of the P--P emulsion layer 9 are re-exposed, and there is no effect on the latent image or the like that has already been formed.

In the second exposure, the diffuser plate 6 and filter 7 are removed from the photographic optical system, so the image of the letter "A" housed in the dial (Fig. 3a) appears on the N-P emulsion layer 11. Figure 3 C, which has the same stroke thickness Wa 1 and Wa 2 as
A positive image of the character rAJ as shown in is formed as a latent image.

However, in this case, the magnification of the photographic optical system is set to 1 as described above, and in reality, the magnification of the characters on the dial is usually changed by the imaging lens 5, so in that case Wa 1 , the thickness is proportional to Wa 2.

When the printing operation is completed in this manner, the photosensitive material 8 is subjected to a development process to obtain a negative image of the envelope characters as shown in FIG. 3d, that is, a normal size image and a thicker image at the same time.

If this is printed on a photosensitive material, the desired bag letter "
A" is obtained.

The composition of the photosensitive material 8 used is 2 for each emulsion layer 9, 11.
When using a layered product coated on two sheets of emulsion support 10, the two sheets may be peeled off and developed separately.

In the above explanation, it goes without saying that the first and second exposure times of the light source 1 or the release time of the shutter (not shown) depend on the type of photosensitive material used and do not have any limited value. Nor.

In the above embodiment, the case where a dial 3 containing characters in a negative state is used is used as an example, but a photograph can also be used when using a dial containing characters in a positive state as shown in FIG. 4a. The typesetting machine and photosensitive material are the same as those shown in FIGS. 1 and 2 and described above, and the cover letters can be obtained by the same method and operation.

The differences in this case from the previous example will be explained based on FIG. 4.

The latent image formed on the P-P emulsion layer 9 in the first exposure is an image thinner than the image area thicknesses Wa 1 and Wa 2 of the letter "A" (FIG. 4a) on the irradiated dial. Line thickness Wb
3, Wb4, resulting in a positive image as shown in FIG. 4b.

(However, the magnification of the imaging lens 5 in FIG. 1 is 1.

) This means that the light beam irradiating the letter "A" (Fig. 4 a) passes through an area other than the image, passes through the imaging lens 5, and is then directed to the diffuser plate 6.
This is because the light beam passes through the green filter 7 and reaches the photosensitive material 8 in a state where it is spread by a certain width due to the effect of the diffuser plate 6, and the light enters the image line area of the letters rAJ (non-light transmitting area) by a certain width. The line part will be that much thinner.

Needless to say, the latent image formed on the N--P emulsion layer 11 during the second exposure becomes a normal-sized negative image as shown in FIG. 4C.

After printing is completed in this manner, the negative image of the envelope letters obtained by developing the photosensitive material 8 becomes as shown in FIG. 4d.

The negative image of the envelope character obtained in the previous example (FIG. 3 d) shows that the outline forming the envelope character is formed on the outline of the drawing area of the original character rAJ in FIG. In the negative image of the envelope character according to the embodiment (FIG. 4d), the outer line forming the envelope character is formed inside the drawing line portion of the original character "A" (FIG. 4a).

On the other hand, in the above two embodiments, in order to change the thickness of the outline line forming the envelope character, by changing the degree of diffusion of the diffusion plate 6, the outline character formed by the outline line of various thicknesses can be obtained. be able to.

Furthermore, in the latter embodiment, if a background pattern, such as the one shown in FIG. 5a, is inserted into the photographing optical system during the second exposure, and exposure is performed, a printed matter as shown in FIG. 5b is obtained. can be obtained.

Therefore, by preparing various background patterns and selectively inserting them into the photographing optical system and performing the second exposure, it is possible to obtain cover letters with a wide variety of variations.

In the former embodiment as well, a background pattern (Fig. 5a) is created before printing.
) is brought into close contact with the photosensitive material 8 and exposed to green light, and then the first and second exposures are performed as in the former case, to create similar cover letters.

In the above example, the color sensitivity of the P-P emulsion layer 9 is ortho, N-P
Although the emulsion layer 11 has a regular color sensitivity and the filter 7 has a green color sensitivity, the emulsion layers 9 and 11 may have different color sensitivities, and various combinations are possible.

Further, the lower filter 7 may be selected in accordance with the combination of color sensitivities of the emulsion layers 9 and 11 to allow the light flux that sensitizes one emulsion layer to pass through and to cut off the light flux that sensitizes the other emulsion layer.

Of course, without using the filter 7, we prepared two light sources that each emit different colored light.
It may be possible to switch and use it during each exposure.

Therefore, in this application, the filter can be interpreted as a light source.

Next, an embodiment of the exposure, the diffusion plate 6, the filter 1 attachment/detachment device, and the circuit in the above description will be described.

In FIG. 6, 12 is a mask plate and a window 1 through which the light flux passes.
It has 2a.

A solid line with an arrow indicates the direction of movement of the photographing optical system.

Reference numeral 13 denotes a shutter blade, which is rotated to the right in the drawing by the urging of a drive source 14 such as a rotary solenoid or a motor, and when the urging of the driving source 14 is released, it is returned to its original position by the tension of a spring S (the position shown in the figure). ).

Reference numeral 15 denotes a freewheel type clutch which transmits rotation in only one direction to gears 17 and 18 by the action of a pawl 16.

In the illustrated example, the configuration is such that only clockwise rotation is transmitted.

The disk 19 consists of a semicircular transparent plate 20 and a part 21 in which a filter is laminated to a semicircular diffuser plate, and the gear 1
8 and is connected by a shaft.

All of these are supported by a pedestal (not shown), and a disc 19
are installed in the optical system corresponding to the positions of the diffuser plate 6 and filter 7 shown in FIG.

The role of the transparent plate 20 is to compensate for the difference between the optical path length when the diffuser plate and green filter are inserted into the optical system and the optical path length when they are removed.If the optical path length difference is not a problem, do not need.

When the drive source 14 is energized, the shutter blade 13 rotates out of the optical path to open the optical path, and at the same time the disc 19 rotates through the gears 17,
18 makes a half turn.

The time when the transparent plate 20 of the disk 19 is inserted into the optical path as shown in the figure is defined as the printing start point.

In order to perform the first exposure, the drive source 14 is energized to rotate the shutter blade 13 out of the optical path.

Then, the freewheel type clutch 15 also rotates clockwise, and the gear 1
The disc 19 is rotated clockwise through the lenses 7 and 18 to position the diffuser filter part 21 in the optical path of the optical system.

When the drive source 14 rotates by a predetermined angle and stops, the shutter blade 13 completely opens the optical path, and the disk 19 stops with the diffuser filter part 21 positioned in the optical system.

As a result, the character light flux passes through the diffuser plate filter portion 21 and is directed to a photosensitive material (not shown).

When the drive source 14 is released after exposure for a predetermined time, the shirt blade 13 rotates to the left in the drawing due to the tension of the spring S, returns to its original position, and closes the optical path.

On the other hand, since the freewheel type clutch 15 is in a free state when rotating to the left, the disc 19 is stopped.

Next, when the drive source 14 is energized to perform the second exposure, the shutter blade 13 and disk 19 are rotated clockwise to open the optical path as before, and at the same time, the transparent plate 20 of the disk 19 is positioned in the optical path. do.

Therefore, the character light flux passes through the transparent plate 20 and is directed to a photosensitive material (not shown).

After exposure for a predetermined time, the drive source 14 is released and the shutter blade 13 is returned to its original state by the tension of the spring S, thereby closing the optical path.

At this time, the disk 19 remains stationary.

This completes the one-cycle operation for creating cover letters and prepares for the next printing.

Next, the drive circuit of the device shown in FIG. 6 will be explained based on FIGS. 7 and 8.

FIG. 8 is a time chart of the drive circuit of FIG. 7.

21 is an input terminal for an exposure signal pulse 29 from an exposure command section (not shown); 22 is an input terminal for a command signal pulse 28 from a blank character creation command section (not shown); and 23 is a one-shot multi-by-break.

(hereinafter abbreviated as OSM) receives pulse 29 and pulse 30
occurs.

24 is a drive circuit for the drive source 14, 25 is an AND circuit, 26
The delay circuit delays the input pulse by a time sufficient for the shutter blade 13 to close the optical path from the optical path open position and return to the original position, and then outputs the delayed pulse.

27 is OSM. Next, the overall operation of the device shown in FIG. 6 and the drive circuit shown in FIG. 7 will be explained.

First, when you turn on the bag character creation command section (not shown),
The command signal pulse 28 is directed from the input terminal 22 to the AND circuit 25 .

Next, an exposure signal pulse 2 is sent from an exposure command unit (not shown).
9 is input to the OSM 23 via the input terminal 21.

The OSM 23 receives the exposure signal pulse 29 and generates a pulse 30, which is transferred to the drive circuit 24 and the AND circuit 25.

The drive circuit 24 energizes the drive source 14 and the shutter blade 13
, rotate the disc 19 clockwise to open the optical path and simultaneously insert the diffuser filter part 21 into the optical system.

In this way, the character light flux passes through the diffuser plate filter part 21 and forms an image on a sensitive material (not shown), and the first exposure is started and the exposure state is maintained for the pulse width of the pulse 30.

When the pulse 30 ends, the drive source 14 is deenergized, and the shutter blade 13 rotates to the left due to the tension of the spring S to close the optical path.

The disk 19 remains stationary.

This is as mentioned above. On the other hand, at this time, the AND circuit 25
The command signal pulse 28 and the pulse 30 are inputted, and the circuit becomes open, and outputs a pulse having the width of the pulse 30 to the delay circuit 26.

The delay circuit 26 generates a pulse 31 that is delayed by a time sufficient for the shutter blade 13 to return from the clockwise rotation position to its original position.
is transferred to OSM27.

At the rising edge of the pulse 31, the shutter blade 13 returns to its original position and stops after the first exposure is completed.

OSM 27 generates pulse 32 at the rising edge of pulse 31 and transfers it to drive circuit 24 .

The drive circuit 24 energizes the drive source 14 and the second exposure is started.

First, as before, the shutter blade 13 and the disk 19 are rotated clockwise to open the optical path of the optical system and simultaneously insert the transparent plate 20 into the optical path.

In this way, the character light flux passes through the transparent plate 20 and starts the second exposure to the sensitive material (not shown), and the exposure state is maintained for the pulse width of the pulse 32.

When the pulse 32 ends, the drive source 14 is deenergized, and the shutter blade 13 rotates to the left due to the tension of the spring S, closing the optical system.

At this time, the disk 19 remains stationary.

With the above steps, a latent image of the cover letter is formed on the printed image.

Note that the pulse width generated by the OSMs 23 and 27 must be changed depending on the appropriate pressure exposure time of the photosensitive material used.

Further, when performing normal printing with this apparatus, it is sufficient to turn off the not-illustrated blank character creation command section and do not input the pulse 28.

Of course, at this time it is necessary to remove the claw 16 shown in FIG.

Various means for this purpose can be implemented and will not be described in detail.

Further, if it is not desirable to install additional means for this purpose, the disk 19 may be removed.

Further, when a flash lamp is used as the light source, members such as the shutter blade 13 may be removed and the circuit configured such that the shutter drive command is used as the ignition command for the flash lamp.

As mentioned above, the explanation has been based on the embodiments shown in FIGS. 6 and 7, but if such a method is adopted, two exposures can be performed in one printing operation, which is different from the conventional method. You can create text on the envelope by using a phototypesetting machine similar to the above.

Of course, it goes without saying that the example shown in FIG. 7 may not be used and exposure may be performed twice in two printing operations.

On the other hand, various means other than the above-mentioned embodiments can be used for making the diffuser plate/filter detachable in the optical path, and depending on the case, it may be taken out and put in by hand.

Furthermore, the method for creating bag letters according to the present invention can be carried out not only in so-called phototypesetting machines but also in optical printers, enlargers, and the like.

As described above, the bag letter creation method according to the present invention is based on the dial 3
In a method for creating bag letters in a phototypesetting machine, in which a letter image stored in a photosensitive material 8 is printed on a photosensitive material 8 via a photographing optical system to create a bag letter, a diffuser plate 6 and a filter 7 are attached and removed in the photographing optical system. The light-sensitive material 8 is composed of a positive-positive type emulsion layer 9 and a negative-positive type emulsion layer 11, each having a different color sensitivity, and is installed on the imaging plane of the photographing optical system.
The diffuser plate 6 and filter 7 are inserted into the photographing optical system, arbitrary characters on the dial are printed on the positive-positive emulsion layer 9, and the first exposure is performed, and then the diffuser plate 6 is inserted from the photographing optical system.
and remove the filter 7, and perform a second exposure by printing the same character image as the character on the dial printed in the first exposure onto the negative-positive type emulsion layer 11 via the positive-positive type emulsion layer, Since normal size and thicker character images are formed on both emulsion layers 9 and 11, and these are developed and used to create bag letters directly, special dials are required to create bag letters. To easily obtain cover letters by operations similar to normal printing operations, without requiring any complicated steps using equipment other than a phototypesetting machine, and without requiring special skill.

[Brief explanation of drawings]

Fig. 1 is a schematic diagram of an embodiment of the phototypesetting machine according to the present invention, Fig. 2 is an explanatory diagram of the photosensitive material, and Figs. 3, 4, and 5 are explanations of the process of creating bag letters according to the present invention. Figure, Figure 6, Figure 7, Figure 8
The figure is a diagram of an embodiment showing a partial configuration of a phototypesetting machine for carrying out the present invention. 1...Light source, 2...Dial, 6...
...Diffusion plate, 7...Filter, 8...
...Sensitive material, 13...Shutter blade, 14...
...Drive source.

Claims (1)

[Claims] 1. In a method for creating envelope letters in a phototypesetting machine, in which an image of characters housed in a dial 3 is printed on a photosensitive material 8 via a photographing optical system to create envelope letters, a diffuser plate 6 and a diffuser plate 6 are provided in the photographing optical system. A filter 7 is installed as a removable filter, and the photosensitive material 8 is
consists of a positive-positive type emulsion layer 9 and a negative-positive type emulsion layer 11, each having a different color sensitivity, and is installed on the imaging plane of the photographing optical system, and the diffuser plate 6 and filter 7 are inserted into the photographing optical system. Arbitrary characters on the dial are printed on the positive type emulsion layer 9 and a first exposure is performed, then the diffuser plate 6 and filter 7 are removed from the photographing optical system, and the characters printed on the dial are printed in the first exposure. A character image identical to the character is printed on the negative-positive type emulsion layer 11 via the positive-positive type emulsion layer, and a second exposure is performed to form a normal-sized character image and a thicker character image on both emulsion layers 9 and 11. , a method for creating bag letters in a phototypesetting machine, characterized in that bag letters are directly created by developing and processing the same.