JPS5946793B2 - Type setting method - Google Patents

Description

[Detailed description of the invention]

The present invention relates to an automatic type setting method in a small printing machine such as a label printing machine. More specifically, the type section of a printing machine consists of a superposition of several type rings depending on the number of digits required, each type ring being rotatable independently of the others, and a photoelectric element as a means. and a type selection key, an electronic circuit that operates these as switches, and a servo mechanism that rotates the type ring by a necessary angle in accordance with the output of the electronic circuit. DESCRIPTION OF THE PREFERRED EMBODIMENTS The following description will be made based on the illustrated embodiment structure for carrying out the method of the present invention. Figure 1 shows the basic structure, where 1 is a type ring, 2
is a mask plate, 3 is a light source, and 4 is a sensor. The type ring 1 has type letters corresponding to symbols necessary for printing arranged at equal intervals on its circumferential surface. Here, for convenience of explanation, it is used as a symbol.

[0] ~

Set the integer [9]. Further, as shown in FIG. 2, the type ring 1 has one reference hole 6 near its circumferential surface that penetrates in a direction parallel to the axis 5, and a gear 14 in the center for rotating it in one direction. It is engraved. Note that the reference hole 6 is located between the printed characters arranged at equal intervals as shown in FIG.
The mask plate 2 is made of a hard material that is opaque to light, and has the same number of through holes 7 as the number of printed characters on a circumference whose radius is the dimension from the axis of the shaft 5 of the reference hole 6 near the peripheral surface. are arranged at regular intervals and extending parallel to the axis 5. The mask plate 2 is fixed and does not rotate. The light source 3 and the sensor 4 are arranged with a type ring 1 and a mask plate 2 interposed therebetween, and are arranged in correspondence with the through holes 7, in the same number as the number of type characters, and at equal intervals and facing each other. That is, the light source 3 and the sensor 4 are arranged on the circumference of a circle whose radius is the above-mentioned dimension r, and these circles, the type ring 1, and the mask plate 2 are coaxial 5, and the light source 3, the reference hole 6, The distances of the through hole 7 and the sensor 4 from the axis 5 are all equal. Therefore, only when the type ring 1 rotates and the reference hole 6 coincides with the through hole 7, the sensor 4 corresponding to that through hole senses the light source 3. Note that the position of the reference hole 6 does not need to correspond to a specific type character. In FIG. 3, each sensor 4 is connected to an encoder 8, which transmits a digital signal corresponding to the sensor 4 sensing the light source 3 to a computer 9. Here, each sensor 4 is arranged corresponding to the through hole 8 of the mask plate 2, so each sensor 4 has a corresponding one as shown in FIG.

[0] ~

Since it is possible to match the printed characters in [9], sensor 4 (hereinafter referred to as sensor [1]) that corresponds to [1] now
When the light source 3 (displayed as ) senses the light source 3, the encoder 8 emits a digital signal corresponding to [1]. Below [0
]～

The same is true for each of [9], and in the end, the type ring is determined by the digital signal received by the computer 19]
It is possible to know the position of the reference hole 6, that is, the initial phase of the type ring 1 from the reference position. computer 9
In addition, there are also instructions for selecting the desired typeface to be set.

[0]
~

The signal from the selection button 10 in [9] is the encoder 1
1. For example, if you want [8] to be printed now,
Select and press the button [8] (hereinafter referred to as button [8]). This will act as a switch and the encoder 11 will change to [8].
] is used to transmit a digital signal corresponding to

[0] ~

A signal corresponding to the selected button [9] is also transmitted to the computer 9. The computer 19 receives the signal from the sensor [1] and the signal from the button [8], processes the signals, and determines how far the type ring 1 can be rotated from the current initial phase position so that the desired type character [8] can be placed at the printing position ( A signal (digital signal) is issued to indicate whether the type that has reached this position is called the surface type.
Furthermore, this is pulse-processed, amplified, and transmitted to the instruction counter 12. The counter 12 is connected to a pulse motor 13, and starts and rotates the pulse motor 13 by a predetermined number of pulses (corresponding to the necessary rotation angle of the type ring 1) in response to a signal from the computer 19, and then stops the pulse motor 13. The pulse motor 13 is mechanically connected to the type ring 1 via a gear 14 and can rotate the type ring 1 by a predetermined angle. Attach equally spaced slit disks to the shaft of the motor,
It is also possible to accurately stop the rotation of the type ring 1 by attaching a photoelectric device or the like to this to obtain a pulse corresponding to the rotation of the shaft and transmitting this to the counter 12 as a subtraction pulse. In the above, the operation of the button 10 starts the rotation of the type ring 1, and the signal transmitted to the computer 9 via the encoder 8 corresponds to the sensor 4 that first detected the light source 3 after the type ring 1 rotated. Subsequent signals from other sensors are ignored until the next operation of the button 10. In addition, in the actual case, as shown in Figure 4, type rings A, B,
... is used as printing by polymerizing the required number of digits. In this case, as shown in the basic principle diagram in Figure 1, each type ring A,
If only the reference hole 6 is drilled in B..., even if one of the type rings is rotated to set the desired type position, the initial phases of the other type rings will most likely be different. In most cases, the light from the light source 3 does not reach the sensor 4. That is, simply by providing the reference hole 6 in each type ring, even if the type ring is rotated to set the type, the initial point sensing position x cannot be determined. This is true of any type ring. Therefore, in the above case, each type ring is provided with a through hole 7 in the mask plate 2 in FIG. 1 as well as a reference hole 6, as shown in FIG. The through holes 7 were arranged at equal intervals in the type ring soil.

[0] ~ [
9] directly below each type, and each type ring is π/5
Since each type ring is rotated in units of 1 to 2, when each type ring is stopped, its through holes can be aligned in agreement, and when one of type rings A, B, etc. rotates to set a type, this type All the through holes 7 are once closed by the ring, and then when the reference hole 6 matches one through hole 7, only the optical path between the light source 3 and the sensor 4 corresponding to that through hole is opened. That is, it is possible to know the starting point sensing position x regarding the type ring for which the type setting is to be performed.
The same applies to other type rings. In other words, the type ring having the reference hole 6 and the through hole 7 itself has the function of the mask plate 2 in FIG. 1. As described above, according to the method of the present invention, no matter what phase the type ring 1 is in, no matter where the exposed position of the type is, or no matter what type of type is desired to be set, the desired type can be set at the exposed position. The rotation angle (frame feed number c) of the type ring 1 for setting (setting) can be detected very easily, and the type setting mechanism of the type ring 1 and the type part of the printing machine where these are superimposed can be detected very easily. It can be made extremely simple compared to the conventional type, has extremely few breakdowns and malfunctions, and exhibits effects such as smooth rotation of the type ring. Further, it goes without saying that the reference hole 6 and the through hole 7 may be vertically elongated slits of the same shape facing toward the offshore center of the ring.

[Brief explanation of drawings]

Fig. 1 is a diagram schematically showing the basic principle, Fig. 2 is an example showing the position of the reference hole 6 in the type ring, Fig. 3 is a signal processing system diagram, and Fig. 4 is the type portion in an actual case. of-
Figure 5 is a plan view of the actual type ring. Explanation of the main symbols: 1: Type ring, 2: Mask plate, 3
: Light source, 4: Sensor 1, 6: Reference hole, 7: Through hole, 14
:gear.

Claims (1)

[Claims] 1. A disc-shaped type ring with type characters engraved at equal intervals on its circumferential surface and one reference hole bored between the type characters on the side surface is provided rotatably around an axis, and the type ring is Adjacent, near the circumferential surface, the same number of through holes as the number of printed characters are bored at equal intervals on a circumference whose radius is the dimension r from the axis of the reference hole drilled in the type ring, and A mask plate made of an opaque hard material is fixedly arranged, and on one side with the type ring and mask plate in between, light sources of the same number as the number of type letters are arranged with the dimension r.
In a printing machine, the sensors are arranged at equal intervals on a circumference with a radius of r, and on the opposite side, the same number of sensors are arranged at equal intervals on a circumference with a radius of dimension r, corresponding to the light source. When the type ring rotates during type setting operation, the current exposed position of the type ring is electrically detected by a sensor that detects light from the light source through the reference hole at the beginning immediately after the type ring rotates. Type setting that is grasped as a signal, generates an electric signal corresponding to the desired expressed type by manual operation, compares these two electric signals, and obtains the required rotation angle signal of the type ring from the difference. Method.