JPS6237736A - Printer - Google Patents

Abstract

PURPOSE:To print inputs different in code by a single printer by converting the input data different from a specific code into this specific code. CONSTITUTION:When an external printing code supplied from an input register 4 is equal to a specific code like an ASCII, etc. of the USA standard, this code is supplied directly to a switching part 2. While the print code is converted into the ASCII standard by a code conversion table 1 and supplied to the part 2 via an output register 5 in case said print code is equal to a PC code of the personal computer standard and is not equal to a specific standard. The part 2 is controlled by a code system designating part 3 and outputs the external print code converted into a code ASCII, etc. Thus it is possible to print the inputs different in code by a single printer.

Description

[Detailed description of the invention] [Table of contents] Overview Industrial field of application Conventional technology Problems to be solved by the invention Means for solving the problems (Fig. 1) Example of operation (1) First embodiment (Figure 2) (2) Operation of the first embodiment (Figure 2) (3) Other embodiments (Figures 3 and 4) Effects of the invention [Summary] The printer can be used not only in ASCII but also in In order to enable printing using input signals of other code systems, this printing device is equipped with a code conversion table and a code system instruction means, and is capable of printing even with a plurality of code systems.

[Industrial application field]

The present invention relates to a printing device, and more particularly to a typeface serial printer that allows input of a plurality of code systems.

[Conventional technology]

When printing with a typeface serial printer, the characters to be printed as typeface codes are uniquely determined for each code system. The code system for this printer is ASC as the American standard.
II, and the Japanese domestic standard is JIS. Therefore, products exported to the United States are configured to operate using the American standard ASCII code.

[Problem that the invention seeks to solve]

By the way, in recent years, as the popularity of personal computers has increased, a personal computer-specific code (hereinafter referred to as PC), which is a code unique to the manufacturer, has been developed as a print code for personal computers, and printers are operated using this code. Therefore, if there is a requirement to print with a unique code system such as PC code, it is necessary to create a special model for that purpose, that is, a model different from ASCII code.

Therefore, there has been a strong demand for a printer that can be used with both ASCII code and PC code, for example.

SUMMARY OF THE INVENTION An object of the present invention is to provide a single printer that can be used with both PC code and ASCIT code, in order to solve these problems.

[Means for solving problems]

For this reason, in the printing device of the present invention, as shown in FIG. 1, in the case of a printing device that can be used for both ASCII code and PC code,
A code conversion table 1 for converting into II code and a switching section 2 are provided. And ASC as the external printing code
When using the II code, the external printing code is controlled to be output as the output of the switching unit 2, and conversely, when the PC code is used as the external printing code, the output of the switching unit 2 is controlled so that the external printing code is output. Make the code output.

[Effect]

Therefore, if the print code input from the outside is a PC code, it is converted to ASC according to code conversion table 1.
If the print code input from the outside is an ASCII code, it is output as is from the switching unit 2, so everything inside the printer is controlled by the ASCII code. can do.

〔Example〕

(1) Structure of the first embodiment In FIG. 2, 1 is a code conversion table, 2 is a switching section, 3 is a code system specification section, 4 is an input register, 5 is an output register, 6 is a type position table, and 7 is a Printing pressure/ribbon feed amount table, 8 is a register in which the target print position is set, 9 is a calculation unit, 10 is a switch unit, 1) is a register in which the current print position is set, 12 is a print selection control unit, 13 1 is a driver for a type selection motor; 14 is a type selection motor; 15 is a print wheel; 16 is a register in which printing pressure data is set; 17 is a hammer control unit;
8 is a driver for a hammer, 19 is a hammer, 20 is a register in which ribbon feed amount data is set, 21 is a ribbon feed control section, 22 is a driver for a ribbon feed motor, and 23 is a ribbon feed motor.

Code conversion table 1 is for converting PC codes into ASCII codes.

The switching unit 2 selects and outputs either the output of the code conversion table 1 stored in the output register 5 or the external print code set in the input register 4, and outputs either the output of the code conversion table 1 set in the output register 5 or the external print code set in the input register 4. The selection is controlled by the control signal.

The code system specification section 3 is configured to indicate what the external printing code is (for example, ASCII code or PC code), and outputs, for example, "1" when it is an ASCII code. There is. This code system specification part 3
The control unit may be configured by a switch provided on the panel portion, or may be configured to decode and store a command indicating the code to be used and output a predetermined control signal.

The type position table 6 stores position data indicating the position of the type in the print wheel 15 from the home position.

In the printing pressure/ribbon feed amount table 7, since the character width differs depending on the type, it is necessary to hit the print wheel 15 with the printing pressure applied to the type, or to feed the ribbon at a length according to the character width. For this purpose, the printing pressure and ribbon feed amount for each type are stored.

The calculation unit 9 determines the amount of movement of the print wheel 15 by calculating in which direction and how far away the type to be printed is from the type currently being printed.

The type selection control unit 12 performs the necessary control to move the print wheel 15 to the position calculated by the calculation unit 9, and selects the type by controlling the number of steps and direction corresponding to the amount of movement via the driver 13. This is given to the selection motor 14.

The print 1-wheel 15 has printed characters arranged in a circumferential manner, and the position of the printed characters from the home position is determined depending on the type of the printed characters. Then, the characters can be printed on the paper by striking them with the hammer 19.

The hammer control unit 17 performs control to strike the print wheel 15 with the hammer 19 so that the printing pressure set in the register 16 is achieved.

The ribbon feed control section 21 controls the amount of rotation of the ribbon feed motor 23 so that the amount of ribbon feed set in the register 20 is achieved.

(2) Operation of the first embodiment ■ When the apparatus shown in FIG. 2 is used in a PC code system, the code system specifying section 3 outputs a control signal "0" to the switching section 2. Separately, register 1) is cleared. Upon application of the control signal "0", the switching section 2 outputs the signal input from the output register 5. Therefore, for example, when an external print code based on the PC code system is input from an external host device, this PC code is converted into a corresponding ASCII code by the code conversion table 1 and set in the output register 5, and this is transferred to the switching unit 2. , and is transmitted to the character position table 6. As a result, the corresponding character position, for example A, is output from the character position table 6. Then, this print position data A is set in a register 8 indicating the print target position. At this time, register 1) has been cleared and no current position data has been written and has a zero value, so the arithmetic unit 9 subtracts the value of register 1), zero, from the print position data A set in register 8 (A- 0)
The calculation result A is applied to the type selection control section 12, and a control signal is output so that the print wheel 15 rotates by an amount corresponding to this, and in response, the type selection motor 14 is activated. The drive is controlled by a driver 13. In this way, the predetermined type comes to the printing position.

By the way, the type position data A outputted from the type position table 6 is also transmitted to the printing pressure/ribbon feed amount table 7, and the printing pressure and ribbon feed amount corresponding to the character are respectively output. Then, the printing pressure is set in the register 16, and the ribbon feed amount is set in the register 20. The hammer control unit 17 controls the driver 18 in accordance with the printing pressure applied to the register 16, and the hammer 19 strikes the type on the print wheel 15 with a predetermined printing pressure. Further, the ribbon feed control section 21 has a register 2.
Driver 2 according to the ribbon feed amount set to 0.
2 to adjust the amount of rotation of the ribbon feed motor 23. When printing is completed in this way, the type selection control section 12 turns on the switch section 10 and writes the data set in register 8 to register 1). Type position data A indicating the position of the type characters will be entered.

The second print code is input to the input register 4, and the ASCII code is output from the code conversion table in the same way.This is applied to the print position table 6 via the output register 5 and the switching unit 2, and the print position data is When B is sent to the register 8, the arithmetic unit 9 calculates the difference (B- A), that is, the amount of movement from the current position is calculated and transmitted to the type selection control section 12.

This moves the next type into position, and also increases the printing pressure.
Control of the ribbon feed amount and the like is performed in the same manner, so that correct printing can be performed. These steps are performed sequentially, and printing is performed by inputting the PC code.

(2) When the device shown in FIG. 2 is used in the ASCII code system, the code system specifying section 3 outputs the control signal rlJ to the switching section 2. Separately, clear register 1). Upon application of the control signal "1", the switching unit 2 outputs the signal input from the input register 4. Based on this, sequential printing can be performed in the same manner as in the case (2) above.

(3) Other embodiments■ In (1) and (2) above, the PC is used as the external printing code.
Two types of examples have been described: the code and the AscII code, but if there are multiple PC codes, the code conversion table 1' is enlarged by the number of PC codes to correspond to each one, as shown in Fig. 3. Configure it to output ASCII code.

Then, the code system specification section 3' limits the use of the code conversion table 1' according to the external printing code, and only when the external printing code is an ASCII code, the code system specification section 3'
If it is configured so that the control signal ' outputs a control signal "1", it can be used in exactly the same way as (1) and (2) above.

(2) A third embodiment of the present invention will be explained based on FIG.

PC codes are not completely different from ASCII codes, but use codes that are partially the same, such as numbers and alphabets. Also, it is necessary to change the PC code slightly depending on each language. This is because the housing position of the type is different depending on the wheels of each country. There are also special alphabets and symbols depending on the country, such as the German umrat. Therefore, if you want to be able to use it in common in multiple countries, you will need to have a different code table for each language, but this will result in RO
Since the M capacity becomes large, if the common parts are separated, the ROM capacity can be saved compared to having code tables for each language.

For this purpose, in FIG. 4, there is a code conversion table 30 in which common parts such as numbers and alpha vents are stored, and a non-common part determination table 3 which indicates that the common part is a non-common part.
1, a comparing section 32, a multiplexer 33, a national language specifying section 34 in which the national language to be used is specified, and a national language conversion table 35, 36, and 36 in which codes unique to each national language are stored.
etc. will be established.

For example, the national language conversion table 35 is for German, and the national language conversion table 36 is for French. The national language designation section 34 converts the signal from the comparison section 32 input to the multiplexer 33 into a specific national language conversion table 35.
36-, and is specified in advance by the user. For example, in the case of a user who speaks German, the comparison unit 32
so that the output of is transmitted to the national language conversion table 35,
The multiplexer 33 controls the national language designation section 34 in advance.
is set so that it outputs a predetermined control signal.

Therefore, in FIG. 4 fa), for example, if the external print code sent from the host device (not shown) is a PC code, the code conversion table 30 is
access. At this time, it is first input to the code conversion table, and if it is a common part like a number, the comparison unit 32 determines that it is a common part by comparing it with the output of the common part determination table 31 and switches it. Output to section 2. Therefore, this common ASCII
The code will be output.

Furthermore, if the character is not common, such as an umrat character, the comparison unit 32 outputs this to the multiplexer 33. This is transmitted from the multiplexer 33 to the national language conversion table 35, converted to ASCII, sent to the switching section 2 via the output register 5, and outputted from the switching section 2.

The output of the switching unit 2 is transmitted to the type position table 6,
Predetermined printing is performed in the same manner as in the case of FIG. 2.

In addition, in the above descriptions of each side, examples were explained in which ASCII code was used as the basic code in the printer, but the basic code is not limited to ASCII code, and JIS code or other codes may also be used. be able to.

Furthermore, although each of the above-mentioned tables is created using a ROM, it is not limited to this.

[Effects of the Invention] According to the present invention, one printer can handle both ASCII code and PC code, so there is no need to create printers for each code to be used.

Also, if code parts common to the basic code are detected separately, the code conversion table can be made smaller.

[Brief explanation of the drawing]

Figure 1 is a diagram of the principle of the invention, Figure 2 is a configuration diagram of one embodiment of the invention, Figure 3 is the main part of an embodiment that can be used for three or more code systems, and Figure 4 is another embodiment of the invention. This is an example. 1 - Code conversion table 2 - Switching section 3 - Code system specification section 4 - Manual register 5 - Output register 6 - Character position table 7 - Printing pressure/ribbon feed amount table 8 - Register 9 - Arithmetic unit 10 - Switch unit 1) - Register 12 - Type selection control unit 13 - Driver 14 - Type selection motor 15 - Print wheel 16 - Register 17 - Hammer control unit 18 - Driver 19 - Hammer 20 - Register 21 - Ribbon feed control section 22 - Driver 23 - Ribbon feed motor Figure 4

Claims (2)

[Claims] (1) code conversion means (1) for converting input data into a specific code system; switching means (2) for selecting whether to output the input data or output the converted data of the code conversion means (1); A printing device comprising a code system specifying means (3) for specifying an external printing code, and converting input data to a specific code system when the input data is not in a specific code system. (2) When the input data is not a specific code system, a common part indicating means (31) is provided to indicate a common part with the specific code system, which is a part thereof, and checks whether the input data is a common part or not. A printing device according to claim (1), characterized in that the printing device is configured to: