JPH0257794B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION Field of Industrial Application The present invention relates to an electric Japanese typewriter equipped with a ruling device.

Conventional Structure and Problems In recent years, Japanese typewriters have been motorized and are being used as output printers for word processors. Along with this, marking devices for printing front matter, underlining, etc. are also becoming automated. In electric typewriters that are equipped with this automatic ruling device and attempt to print a mixture of front and text items at the same time, it is difficult to install a ruling device for printing ruled lines on the type bar for character printing. It is.
Therefore, the two are installed with a certain dimensional difference between them, but in this case, it is necessary to strictly correlate the printing positions of the two.

A printing position using a combination of a conventional type bar and a marking device will be described below.

Figures 1 and 2 show the type bar and the marking device part of an electric Japanese typewriter equipped with a marking device, in which 1 is a constant dimension b from the origin a in the circumferential direction of the cylindrical platen 2, A type bar is installed so as to print at a position e separated by a constant distance d from the origin c in the length direction. This is a marking device attached at a position h separated by a certain distance g from the line. Further, the marking device 3 is attached so as to rotate around a fulcrum 5 attached to a fixed base 4. 6 is a type storage board, 7 is a type pusher, and 8 is a type stored in the storage board.

The operation of printing a document containing characters and ruled lines by the electric Japanese typewriter equipped with the ruling device configured as described above will be described below.

First, like a conventional electric Japanese typewriter, the type storage board 6 is driven and set at the desired character position. Then, the pushing 7 is driven to cause the type bar 1 to engage the type bar 1, and the type bar 1 is rotated to print on the paper on the platen 2. Thereafter, text is printed by repeating the same process, and after the text is printed, a ruled line is drawn at a position spaced by a specified dimension from the position of the printed character.
In this case, as is clear from the figure, the printing position of the type bar and the printing position of the marking device are different, so the relative dimensional difference between the two printing positions (relative dimensional difference f in the platen circumferential direction, relative dimensional difference g in the platen length direction) is calculated. The platen 2 must be rotated about the platen shaft 9 as a fulcrum to eliminate errors, and must also be driven in the longitudinal direction of the platen so as to eliminate errors.

By driving the platen in consideration of the above-mentioned relative dimensional difference, the type bar and the printing position coordinates of the marking device are associated with each other, and a mixed document including characters and lines is printed.

Regarding the printing position alignment between the type bar and the marking device in the above content, conventionally, the platen circumferential offset dimension f and the platen lengthwise offset dimension g are defined based on the printing position e of the type bar 1. The marking device 3 was attached to the fixed base 4 while adjusting the printing position h of the marking device 3 to a specified size.

However, in the above configuration, the marking device is adjusted and fixed so as to simultaneously satisfy the offset dimension from the printing position of the type bar 1 and the contact of the marking device 3 against the platen 2, which has a large effect on the quality of ruled lines. It is extremely difficult to do so. In addition, when making multiple machines, there will be slight differences in offset dimensions depending on the machine, so control must be performed that includes offset dimension correction for each machine, making it unsuitable for mass production. It had some problems.

Purpose of the invention The present invention solves the above-mentioned conventional problems.
We provide a Japanese typewriter that can be easily mass-produced because it is simple and accurate in aligning the print position between the type bar and the marking device of the electric Japanese typewriter mentioned above, and also absorbs differences in control due to differences in offset dimensions of individual machines. The purpose is to

Composition of the Invention The present invention provides an automatic ruling device that is equipped with guide type within the surface of the type storage board, an input device that can set the offset dimension difference between the printing position of the type bar and the ruling device, and an offset dimension adjustment confirmation switch. This is related to a Japanese typewriter that comes with a typewriter, and by setting and inputting the offset dimension difference, the relationship between the above two printing positions is completed, and it is possible to create a document with a mixture of characters and ruled lines with excellent printing quality. It is something.

DESCRIPTION OF EMBODIMENTS FIG. 3 shows the principle of a print positioning system between a type bar and a marking device in an embodiment of the present invention.

In FIG. 3, 10 is a platen, 11 is a motor for driving the platen in the circumferential direction, 12 is a motor for driving the platen in the longitudinal direction, 13 is a type bar, 14 is a motor for driving the type bar, and 15 is the type after printing by the type bar 13. 16 is a detector for detecting the end of printing by detecting a fall into the type storage board 17; 18 is a print head of a marking device that is driven up and down by a solenoid; 19 is a switch for confirming offset dimension adjustment; 20 is a type bar. A drive motor control block, 21 is a driver circuit for the type bar drive motor, and 22 and 23 are dip switches for inputting settings for the relative dimensional difference between the printing position of the type bar and the marking device in the circumferential direction and length direction of the platen, respectively. ,
24 and 25 are down counters that can be preset (LD is a load terminal, CNT is a count pulse input terminal, OUT is an output terminal that becomes "O" when the counter content reaches zero, and PR is a preset input terminal). 26 and 27 are oscillators, 28 is a flip-flop that is set at the rising edge of the output of the print cycle end detector 15, 29 and 30 are three-input AND circuits, 31 and 32 are pulse distribution circuits, 33,
34 is a pulse motor driver circuit, 35 is a NOR circuit, and 36 is a time TD1 triggered by the rising edge of the NOR circuit 35 until the printing head 18 descends onto the platen 10 and prints a dot on the platen 10.
37 is a solenoid driver circuit, 38 is a monostable multivibrator set with
is the marking device fixing base.

The operation of the electric Japanese typewriter of this embodiment constructed as described above will be briefly described below.

First, the marking device is adjusted so that the quality of the printed lines is the best, and the marking device is fixed to a fixed base.

If you press the offset dimension adjustment confirmation switch here, the load terminals of counters 24 and 25 will be “0”→
The values of the dip switches 22 and 23, which are set to "1" and the relative dimensional difference between the printing position of the type bar 13 in the circumferential direction and length direction of the platen 10 and the printing head 18 for marking, are set to the counter 2.
It is preset to 4,25. At this time, the OUT terminals of the counters 24 and 25 are at "1".
At this time, the type bar print control block is also triggered and operates to print the guide type shown in FIG. 4 on the stationary platen 10. When the printing operation is completed and the guide type passes through the detector 15, the output of the detector 15 changes from "0" to "1".
Flip-flop 28 is set. here 3
The output 29 of the input AND circuit becomes the same output as the oscillators 26 and 27, and oscillates a pulse signal. By this oscillation output, the distribution circuits 31 and 32 and the driver circuit 3
The platen 10 is driven by drive motors 11 and 12 through the drive motors 3 and 34. Then, by applying this oscillation output to the CNT terminal of the counter, the value preset in the counter earlier is counted down, and when it reaches zero, the OUT terminal becomes "0", so the output of the 3-input AND gate is "0". ” and the oscillation stops. That is, the platen 10 is driven by the amount set in the dip switches 22 and 23 and then stopped. counter 2
When the outputs of the OUT terminals 4 and 25 both become "0", the output of the NOR gate 35 changes from "0" to "1", the monostable multivibrator 36 is set, and the solenoid driver 37 turns the marking head 18 on. It descends onto the platen 10 and prints dots on the platen 10.

After the set time TD ₁ of the monostable multivibrator 36, the output of the monostable multivibrator 36 is reset so that the print head 1
8 also rises.

At this time, the guide type printed by the type bar 13 and the dots printed by the ruling device are as shown in FIG. The directional dimensional difference λ is measured, and the previously set depth switches 22 and 23 are adjusted and reset in consideration of the directionality.

Thereafter, similar operations are repeated until the dots printed by the ruling device are centered on the guide type prints, as shown in FIG.

As a result, the type bar and the marking device printing position are correctly associated, so when printing a document containing text and ruled lines, the date switch 22,
By driving the platen in consideration of the numerical value set in 23, it is possible to create a document containing characters and ruled lines of excellent quality.

Effects of the Invention As described above, according to the present invention, it is possible to easily and accurately align the print position between the type bar and the ruling device while maintaining good ruled line quality, and once the settings are made, Thereafter, no settings are necessary.
Further, when mass-produced, it is possible to absorb differences in control due to differences in mounting dimensions of individual machines, and it is possible to obtain excellent effects such as ease of mass-production.

[Brief explanation of drawings]

FIG. 1 is a side view of the printing section of an electric Japanese typewriter equipped with a conventional automatic ruling device, FIG. 2 is a plan view of the same, and FIG. 3 is an automatic ruling device and type bar according to an embodiment of the present invention. FIG. 4 is a plan view showing the guide type, and FIGS. 5 and 6 are diagrams showing dot printing using the guide type and the ruling head printed according to this embodiment. be. 10...Platen, 13...Type bar, 15
...detector, 16 ... type after printing, 17 ... type storage board, 18 ... print head, 19 ... offset dimension adjustment confirmation switch, 22, 23 ... deep switch, 24, 25 ... down counter,
31, 32... Pulse distribution circuit, 36... Monostable multivibrator, 38... Creasing device fixing base.

Claims (1)

[Claims] 1. An automatic ruling device that drives the ruling device by an electric drive mechanism, an input device for setting and inputting a relative dimensional difference between the printing position of the type bar and the printing position of the ruling device, and input data of the input device An electric Japanese typewriter characterized in that the relative position of the ruling device and the type bar is changed according to the following.