JPS59152879A - Printer - Google Patents

Abstract

PURPOSE:To enable to selectively use an apparatus as a word processor and as a terminal of a communicating system by replacing a memory, by providing a printer with a replaceable memory storing combination sequence data of character data required for compound characters, space data and line field data. CONSTITUTION:A compounding sequence format table required for a character- type printer used as a terminal for international telecommunication is stored in an ROM 53. When a character designated by printing data DT is not provided in a type wheel, a printer-driving circuit 50 reads data of the compounding sequence format table for the designated character stored in the ROM 53, and transfers the data to a printer-controlling circuit 52. Accordingly, even those characters which are not provided in the type wheel can be printed.

Description

DETAILED DESCRIPTION OF THE INVENTION This invention relates to a type printer that prints characters that do not exist as type by combining a plurality of type characters.

January 4 Document creation machines such as word processors or document creation communication terminal devices capable of international communication must be able to use not only single characters such as alphabets and numbers, but also characters with distinctive phonetic properties. is desirable.

However, when the output section of such a document production machine is configured with a type printer, for example, a DC wheel type printer, it is difficult to provide all necessary characters as type.

For example, a document production communication terminal capable of international communication is required to use 309 types of characters, whereas a normal DC wheel type printer is required to use at most 125 types of characters. I can only set it.

Therefore, characters that cannot be prepared as printed characters are formed by composite printing of a plurality of printed characters.For example, the characters with distinguishing phonetic character, Umlau 1 ~ the character with ``°'', are printed with Umlau 1 ~ ``°
The printed characters ``'' and the basic character "A" are combined and printed by half-line feeding or the like.

Therefore, in conventional type printers, information necessary for composite printing is stored in an internal memory depending on the purpose of use of the printer.

However, if this is done, it cannot be adapted to different purposes of use, resulting in a disadvantage of poor versatility.

This invention has been made in view of the above-mentioned points, and an object thereof is to make the above-mentioned type printer compatible with different purposes of use, thereby providing versatility.

composition Hereinafter, the configuration of the present invention will be explained based on one embodiment.

FIG. 1 is a schematic perspective view showing the appearance of a document creation communication terminal device capable of international communication and equipped with a printer embodying the present invention.

This document creation communication terminal device includes a keyboard 1 for inputting characters, format, and control information necessary for document creation and editing.
, a character display 2 for displaying created documents and documents received from the destination terminal, etc., a DC wheel printer 3 for printing created documents and received documents, two floppy disk devices 4 for storing documents, and document information. The main body 5 includes a communication control section that controls transmission and reception of the keyboard, and a system control section that controls the entire system. The character display 2 and DC wheel printer 6 are movably connected to the main body 5 by a curl cord (not shown).

The keyboard 1 includes character keys for inputting character information such as symbols, numbers, alphabets, kana diacritics, etc., and a shift key for selecting one of multiple types of characters to be input with the character keys. - Graphics consisting of keys etc.
Character key and inserter 1 to insert new characters
The edit key consists of an insert key for inputting information for selecting a mode and other keys for inputting information such as deletion, movement, correction, tab, etc., and information for moving the cursor on the screen of the character display 2. It is equipped with cursor keys etc. for input.

FIGS. 2 and 3 are a plan view and an enlarged sectional view taken along the line m-nr of the printing mechanism of this printer.

In both figures, a main body case 10 is rotatably attached to a platen 11 that wraps and feeds paper to be printed.

This platen 11 is driven by a paper feed motor (line feed motor) 12 fixed to the main body case 10 via a gear train 13 to automatically feed paper.

Further, the second platen 11 has knobs 14 and 15 fixed to both ends, and can be manually rotated by turning the knobs 14 and 1s when loading or removing paper.

Incidentally, rotatable rollers 16 and 17 are brought into pressure contact with this platen 11 in order to push the paper onto the surface thereof.

There are two rods 18 fixed to the main body case 10.
A carriage 21 is mounted on the platen 19 so as to be movable parallel to the platen 11 in its axial direction.

This carriage 21 has a pulley 22 mounted below it.
(Fig. 3), the pulleys 2, 24, 25, and 26 attached to both sides of the main body case 10, and the shaft 2 of the drive motor (space motor) 27 attached to the main body case 10.
Via the pulley 28 fixed to the tip of 7a and the wires 22 to 26 and 28 stretched,
It is moved by a space motor 27.

A slit disk 31 having a position detection slit and an origin detection slit is fixed to the rear end of the space motor 27.
A space sensor 32 consisting of a photosensor including a light-emitting element and a light-receiving element facing each other is arranged.

The rotation amount detection signal from the space sensor 32 is used to control the drive of the space motor 27, that is, to control the drive of the carriage 21, and is also used to detect the operating state of the carriage 21.

In addition, the carriage 21, as shown in detail in FIG.
A drive motor (selection motor) 36 having a type wheel 35 formed with a large number of type characters 34 attached to the tip of a shaft 36a, a hammer 37 that hits the type 34 of the type wheel 35, and a hammer assembly 38 including a hammer magnet (not shown). A drive motor (ribbon feed motor) 3 is interposed between the platen 11 and the type wheel 35.
B (FIG. 2) includes a ribbon carriage 41 loaded with an ink ribbon 40 that is run.

As shown in FIG. 4, the type wheel Otsu 5 carries type characters 34 at the tips of a number of spokes 43 of approximately the same shape extending radially from a central hub 42, and a selection motor is mounted on the central hub 42. A reinforcing ring 44 made of rubber or the like is fixedly attached to the shaft 36a of 36.

A slit disk 46 having a position detection slit and an origin detection slit is also located at the rear end of the selection motor Otsu 6 equipped with this type wheel 35.
A selection sensor 47 consisting of a photosensor equipped with a light emitting element and a light receiving element facing each other with this slit disk in between is arranged.

The rotation amount detection signal from this selection sensor 47 is
It is used to control the drive of the selection motor 66, that is, to control the selection of desired characters on the type wheel 35.

FIG. 5 is a block diagram showing an example of a control section of this printer.

In the figure, a printer driver circuit 50 prints type data based on print data DT of a created document, a received document, etc. transferred from the system control unit.

Space data, line feed data, etc. are sent to a printer control circuit 52 that controls each part of the printer via a printer interface circuit 51 consisting of a programmable communication interface, etc.
Transfer to.

This printer driver circuit 50 has print data DT.
It is determined whether or not the characters are in the printed characters 34 of the printed character wheel 65, and if the characters are not in the printed characters 4, the composite sequence format table stored in the replaceable non-volatile memory (ROM) 53 is referred to. , type data, space data, and line feet data corresponding to the print data DT are transferred.

The composition sequence formats 1 to 1 tables stored in the ROM 5!1 will be described later.

Then, the printer control circuit 52 first uses input data and a position path from the space sensor 62 to designate a print position based on the processing results of each input data. 8, drive signal DSP to driver 5
4 to drive and control the space motor 27 to move the carriage 21 in a predetermined direction by a required amount.

Further, the printer control circuit 52 outputs a drive signal DSL to the driver 56 to drive and control the selection motor 36 based on the input data and the position pulse PB from the selection sensor 47 in order to select the type character wheel 35. Rotate the required amount in a given direction.

Further, the printer control circuit 52 outputs a drive signal DH to the driver 57 for printing, controls driving of the hammer magnet 58, and causes the hammer 37 to hit the type 64 of the type wheel 35.

Furthermore, a drive signal DL is output to the driver 5 for line feed to drive and control the line feed motor 12, and a drive signal D is output for moving the ink ribbon 40.
R is output to the driver 60 to drive and control the ribbon feed motor 3.

The printer control circuit 52 also transfers data such as paper end and ribbon end detected by a sensor (not shown) to the printer driver circuit 50 via the printer interface circuit 51.

Next, the creation of the composite sequence format I-table stored in the ROM 5 will be explained.

First, in order to print a plurality of printed characters in a composite manner to form one character, the used printed character data CD, and at least one of space (horizontal movement) data SD and line feed (vertical movement) data LD are required.

Therefore, the order in which the printer operates is determined for the characters to be formed, and the order in which the data is combined is determined.

For example, if you want to form the character "÷" using composite printing,
The printer's operating order is, for example, printing a minus F- symbol → printing a period "," → return line feed (RLF)
4/48″ → period “,” printing → line feet (L
F) When determining 4/48″, the data combination order is
r-+, 10RLF4/48″+, 10LF4
/48″J (it is the same, “+” is meaningless).

Note that as the number of operations increases, the printing speed for one character becomes slower, so it is preferable to limit the number of operations to a maximum of 7 to 8 operations. In this embodiment, the number of operations is limited to seven at most.

Each piece of data necessary for such composite printing is stored in, for example, one byte (8 bits) according to the combination order to form a 7-byte combination order format.

At this time, the type data CD is stored as is as character coat data, and the space data SD and line feed data LD are stored in the following format.

During this format, bits b7. In b6, space, backspace, which is the direction of movement.

Stores data indicating either line feed or return line feed, and in movement amount bins l-b 5 to bo, data of space amount or line feed amount, which is the movement amount, is stored corresponding to the data of the classification. Store.

Note that in this embodiment, bits b7. In the order of b6, the space is roof, the backspace is roll, the line feed is rlo", and the return line feed is "11".
It is said that

Further, the space amount n is r n /120"J, and the line feed amount n' is rn'748"J.

Next, sequence format data for distinguishing whether the data of each date one byte in the combination order format is type data CD, space data SD, or line feed data LD is stored in one byte (8 bits). Store.

In this embodiment, the sequence format data limits the composite printing operation to a maximum of 7 operations, so bit b7
Bit b7 in ~bo is not used (0), bit b6
~bo is set to ``1'' when each data in the corresponding combination order format 1~ is print data CD, and is set to ``0'' when it is space data SD or line feed data LD.

Then, each data of these combination order formats 1 to 1 and the sequence format data form an 8-byte composite sequence format as shown below for composite printing of one character.

During this formatting, sequence format data is stored in byte 1'B0, and each data CD, SD, and LD of operations necessary for composite printing is stored in bytes 81 to B7 in the order of combination.

Next, an example of this composite sequence format will be described using the above-mentioned character "÷" as an example.

First, the above-mentioned data required to print the character "÷" are expressed in hexadecimal format as minus "=", "2DH",
Period ","...r2EHJ, 4RL F4/4
8″J...rC4HJ, r L F4/48″J
...r84HJ.

The order of combination of each data is r
-+, +RLF4/48″
+ , + LF4/48″J, so the sequence format data is bits b7~
bo is roll, 01000J, that is, r in hexadecimal expression.
It becomes 68HJ.

Therefore, the composite sequence format is:

Create composite sequence formats for each character created in this way for the number of characters to be formed by composite printing, create a composite sequence format table, and store this composite sequence format table in a replaceable non-volatile memory. .

The ROM 53 in FIG. 5 stores a composite sequence format table necessary for the type printer used in the document creation terminal device capable of international communication created in this manner.

Therefore, in the document production communication terminal device of this embodiment, when the character specified by the print data DT is a type character that is not in the type wheel 35, the printer driver circuit 50 uses the specified character stored in the ROM 53 as described above. The data of the composite sequence format table is read and transferred to the printer control circuit 52.

Thereby, even characters that are not printed on the type wheel 65 can be printed.

In this way, the type data required for composite printing is stored in the printer.
Equipped with a replaceable memory that stores the combination order data of space data and line feed data, depending on the purpose of the printer, it can be used, for example, as an output part of a document creation terminal capable of international communication or as an output part of a normal word processor. Depending on whether you are using it as a part, you can simply replace the memory.

As described above, according to the present invention, a type printer can print various characters simply by replacing the memory and can be used for different purposes, thereby improving its versatility.

[Brief explanation of the drawing]

FIG. 1 is an external view of a document creation terminal device equipped with a type printer embodying the present invention and capable of international communication. FIGS. 2 and 6 show the printing mechanism of the printer of FIG. 1. A plan view and an enlarged sectional view taken along the line ■-■, FIG. 4 is a plan view showing an example of the type wheel, and FIG.
2 is a block diagram showing an example of a control section of the printer shown in FIG. 2. FIG. 12... Line feed motor 21... Carriage 27... Space motor 35... Type wheel 36... Selection motor 50... Printer driver circuit 52... Printer control circuit 53... Memory (ROM) (and other 1) Figure 3 Figure 4

Claims (1)

[Claims] 1. A type printer that prints characters that do not exist as type by composite printing of multiple types, which is equipped with a replaceable memory that stores combination order information of type information, line feed information, and space information necessary for composite printing. A printer characterized by: