JPH03111931A - Document processor - Google Patents

Abstract

PURPOSE:To prevent the generation of print slur by fixing a switching means to the 2nd mode when an inputted character string is the size to be printed out on plural lines. CONSTITUTION:Information indicating which mode out of a direct printing mode and a delay printing mode is selected is stored in a printing mode flag(MODFLG) 8, and when an input is entered from a keyboard 3 and the input is decided as em character printing e.g., the contents of the MODELG 8 is checked to decide the direct printing mode or the delay printing mode. At the time of deciding the delay printing mode, the processing of the delay printing mode is executed, and when the direct printing mode is decide, the processing of the mode is executed. At the time of selecting vertical em characters are selected, the delay printing mode is selected independently of the past printing mode.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a document processing device, and particularly to a document processing device, in particular, a mode in which printing is performed immediately in response to an input key, and a character string inputted for the first time is printed after a printing instruction is issued. The present invention relates to a document processing device having a mode for performing processing.

[Prior Art] There are roughly two types of printing methods for typewriters.

One is to select the typeface that corresponds to the input key from the group of typefaces located on the outer periphery of the daisy wheel, and print the selected typeface on recording paper through a ribbon or the like. This is a printing method.

The other method is to store the dot patterns that make up characters in non-volatile memory, read out the dot patterns that correspond to input character keys, and print them using a dot matrix type printing unit such as a thermal head. be.

The advantage of the former is that each printed character is of high quality, but the disadvantage is that the types of printed characters are limited.

On the other hand, in the latter case, although a wide variety of printing character types and sizes can be used, the disadvantage is that the printing quality is poor.

However, in recent years, print heads have been improved and printing resolution has become higher. Along with this, it has become possible to increase the number of dots that make up character patterns, and the quality of printing has come to rival that of printed characters.

[Problems to be Solved by the Invention] By the way, in the latter case, that is, in electronic typewriters that employ a printing method using a dot pattern, the scanning movement of the recording head can print characters that span multiple lines (for example, enlarged characters such as double-height characters, etc.). When printing large characters such as 24-point or 36-point characters each time a key is input, it is necessary to print while moving the recording paper up and down. Therefore, it takes a lot of time to print the - character (and depending on the number of times the paper is moved up and down, it gradually becomes "
There is a risk that "print misalignment" may occur.

The present invention has been made in view of this problem, and an object thereof is to provide a document processing device that can suppress the occurrence of printing misalignment by reducing the vertical movement of paper.

[Means for Solving the Problem] A document processing device of the first invention that solves this problem has the configuration shown below. That is, the document processing apparatus has both a first mode in which characters inputted by a key are immediately printed and a second mode in which printing is performed on a group of keys that have already been inputted only after a predetermined printing start instruction is given, a switching means for switching between a first mode and the second mode; an input means for inputting characters of different sizes at least in the vertical direction; and a size at which the characters input by the input means need to be printed over multiple lines. and fixing means for fixing the switching means to the second mode.

Further, the document processing device according to the second invention has the configuration shown below.

A document processing device having both a first mode in which characters inputted by a key are immediately printed and a second mode in which printing is performed on a group of keys that have already been input only after a predetermined printing start instruction is given, the document processing device comprising: a switching means for switching between the above mode and the second mode, an input means for inputting characters of different sizes at least in the vertical direction, and input from the input means while printing in the first mode by the switching means. and fixing means for fixing the range of character sizes within a size that can be printed only within one line.

[Operation] In the configuration of the first invention, if it is determined that the size of the input characters spans multiple lines, the print mode is fixed to the second mode.

Furthermore, in the configuration of the second invention, the character size that can be specified in the first mode is fixed within a range that allows one line printing.

[Embodiments] Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

In the embodiment, there are two types of printing: a direct print mode in which characters are printed as soon as a key is input, and a delayed print mode in which the character string input so far is printed only when a print instruction is received. An example of an electronic typewriter with modes will be explained.

<Description of Apparatus Configuration (FIGS. 1 to 3)> FIG. 1 shows a block diagram of the electronic typewriter in this embodiment.

In the figure, 1 is a CPU that controls the entire device, and a ROM
2 (flowcharts shown in FIGS. 4 to 8). Reference numeral 3 denotes a keyboard, which, in addition to keys corresponding to printed characters, includes various function keys including a direct print mode/delay print mode switching key, and a double-height character designation/cancellation key. Reference numeral 4 denotes a character font ROM that stores dot patterns constituting various characters, and is 40 dots vertically (=5 bytes) and 30 horizontally as shown in Figure 2.
A dot full-width character font pattern and a vertical double-width character font pattern of 80 dots (=10 bytes) and 30 dots horizontally shown in FIG. 3 are stored. Incidentally, since double height characters can be obtained by making each dot in the character font pattern of FIG. 2 correspond to two dots in the vertical direction, it is not necessarily necessary to store these two types of character font patterns.

Returning to FIG. 1, a RAM 5 is used as a work area for the CPU 1, and is provided with the following areas.

A pattern buffer (hereinafter referred to as PTBUF) 6 is a buffer for developing a character font pattern (40×30 dots), and has a capacity of enough bits to print 40 vertical dots (=5 bytes) and 1 horizontal line. Note that the character pattern of double-height characters will be developed separately into the upper and lower parts.

The key buffer (hereinafter referred to as KYBUF) 7 is a buffer for storing codes corresponding to characters input from the keyboard 3, and especially in the delay print mode, character codes input before a print instruction is issued. The group will be temporarily stored.

The print mode flub (hereinafter referred to as MODFLG) 8 is
Information indicating whether direct printing mode or delay printing mode is selected is stored, and data of "O"' is stored when direct printing mode is selected, and "1" is stored when delay printing mode is selected. There is.

Character size flub (hereinafter referred to as 5IZFLG) 9 is,
Information indicating whether the character font pattern is full-width characters or double-height characters is stored, and is "0" for full-width characters and "1" for double-height characters.
data is stored.

Now, regarding the printing unit 10, in the embodiment, a thermal printer equipped with a thermal head in which 40 heating elements are arranged vertically will be described as an example. Therefore, full-width characters can be recorded with one scan. Reference numeral 11 denotes a carriage drive unit that moves the carriage carrying the thermal head in the lateral direction and winds up the thermal transfer ribbon as the carriage moves. Further, 12 is a paper feed drive unit for vertically moving the printing paper, and 13 is a thermal head drive unit that causes each heating element of the thermal head to generate heat according to a pattern sent from the PTBUF 6.

<Description of Processing Procedure (FIGS. 4 to 8)> The processing procedure of the electronic typewriter in this embodiment having the above-described configuration will be explained using a flowchart.

i) Description of key processing task (FIG. 4) First, the flow of the key processing task will be explained with reference to the flowchart shown in FIG.

First, in step S1, it is determined whether or not there is an input from the keyboard 3, and the process loops until there is an input. When a key input is detected, the following step S2. S4. S
The key is determined in step S3.6, and processing according to the determination result is performed in step S3. S5゜S7. Execute at S8.

In step S2, it is determined whether the input key is a print mode switching key. If it is determined that it is the switching key, the process proceeds to step S3, and the MODF
If LG8 is "0", it is inverted to "1", and if it is "1", it is inverted to "0".

If it is determined in step S4 that it is a character size switching key, in step S5, S I ZFLG9 is inverted from 0'' to 1'', and from 1'' to "o".

If it is determined in step S6 that the key is a character key or a print instruction key, a character key processing task (see the flowchart in FIG. 5) is executed in step s7. If it is determined that the key is another key, a process corresponding to each key is executed in step S8.

ii) Description of Character Processing Task (FIG. 5) Next, the flow of the character processing task in step S7 will be explained using FIG.

First, if it is determined in step S9 that SIZFLG9 is 1 (double height character), the process directly proceeds to step S12 without performing the determination process in step S10.

If it is determined in step S9 that full-width character printing is to be performed, the process proceeds to step SIO, where the contents of MODFLG8 are checked to determine whether the mode is direct printing mode or delay printing mode.

If it is determined that the mode is the delay print mode, the process proceeds to step S12, and the process of the delay print mode (
If not, proceed to step Sll and execute the direct print mode process (flowchart in FIG. 6).

As described above, in this embodiment, when a double-height character is selected, the delay print mode is selected regardless of the previous print mode. As a result, when double-height characters are designated, unlike the direct print mode in which characters are printed one by one, the recording paper does not have to be moved up and down frequently, making it possible to prevent printing misalignment.

1ii) Description of Direct Printing Process (FIG. 6) FIG. 6 is a flowchart showing the direct printing process of step Sll.

First, in step S13, the full-width character dot pattern of the input character is read from the character font ROM 4,
Expand it to PTBUF6.

Next, in step S14, the data of the PTBUF6 is sent to the printing unit 10 to print the sent characters.

The reason why only full-width character patterns are read in step S13 is because it is impossible to read double-height character patterns in this mode.

iv) Description of Delay Print Processing (FIG. 7) FIG. 7 is a flowchart showing the details of the delay print process in step S12.

First, in step S15, it is determined whether the print instruction key (in this embodiment, the return key) is pressed. Otherwise (if it is a character key), the code and character size information of the character key is stored in KYBUF7 in step S16.

Further, if it is determined in step S15 that the key is a print instruction key, the process proceeds to step S17, and it is determined whether all the codes stored in KYBUF7 are full-width characters.

If all the characters are full-width characters, the process advances to step S21; if it is determined that at least one double-height character exists, the process advances to step S18.

In step S18, among the codes stored in KYBUF7, a blank 40x30 dot pattern is developed for full-width characters into PTBUF6, and for double-height characters,
The dot pattern in the upper half of double-height characters is font R.
Read from OM4 and expand to PTBUF6. After completing the development of dot patterns for all codes of KYBUF7, the process proceeds to step S19.
The data of PTBUF6 is sent to the printing unit 10 and printing is performed. After printing, one line of paper (
(width of the printing thermal head) and return the carriage to the printing start position. This makes it possible to print the upper part of double-height characters.

After the printing of the upper part of the double-height character is completed in this way, or if it is determined that all the characters to be printed are full-width characters, the process from step S21 onward is performed.

In step S21, the dot pattern of the full-width character stored in the KYBUF7 and the dot pattern of the lower half of the double-height character (if any) are read from the character font ROM4, and expanded into the PTBUF6.

In step S22, as in step S19, PTBUF
6 data is printed. Then, in step S23, a change operation (moves the carriage to the print start position and conveys the recording paper by one line) is performed, and then in step S24
Then, clear KYBUF6.

<Description of other embodiments (Fig. 8)> In the above embodiments, the case where direct printing of double-height characters is prohibited in the character processing task has been described.
Similar effects can also be achieved in key processing tasks. The details will be explained using the flowchart shown in FIG.

First, a key input from the keyboard 3 is waited for in step S25. If there is a key input, the process proceeds to step 826, where it is determined whether it is a print mode switching key. If it is determined that it is the print mode switching key, the MODF key is pressed in step S27.
If LG8 is "0", it is inverted to "1", and if it is "1", it is inverted to "O". Then, in step S28, 5IZFLG9 becomes “1”.
(double-height characters)”, and S I ZFLG9 determines “
1", MODFLG8 is reset to "°1" (step 529). As a result, when double height characters are selected (when SIZFLG9 is "1"), direct printing mode cannot be selected. .

Further, if it is determined in step S30 that it is a font size switching key, 5IZFLG9 is set to "0" in step S31.
”, it is inverted to “1”, and if it is “1”, it is inverted to “0”. Then, in step S32, it is determined whether MODFLG8 is “0 (direct printing mode)”, and MODFLG8 is “0”.
If so, reset 5IZFLG to “O” (step 53).
3). As a result, when the direct print mode is selected (when MODFLG is °'0''), double-height characters cannot be selected.Hereafter, steps 834 to
Step 336 is similar to steps 86 to S8 in FIG.

As explained above, according to this embodiment, when characters spanning multiple lines are input, the print head is not immediately printed, so it is possible to minimize the vertical movement of the recording medium. Become. Therefore, it is possible to perform high-speed printing and to suppress occurrence of printing misalignment.

In the embodiment, two types of full-width characters and double-height characters have been described as examples, but the present invention is not limited to these. In other words, it is possible to adapt to devices having even more font sizes.

In addition, in the embodiment, only full-width characters are used in the direct printing mode, but the gist of the present invention is that any character that can be printed by the print head in one scanning movement is sufficient.
If the device is capable of specifying, for example, 1/2 characters in the vertical direction (for example, 1/4 double-width characters), switching between full-width characters and reduced characters is free in the direct print mode.

[Effects of the Invention] As explained above, according to the first invention, character input of a size spanning multiple lines is effective only in a mode in which printing is executed for a group of revenue keys only after a predetermined print start instruction is issued. Therefore, the vertical movement of the recording medium is minimized, making it possible to suppress printing misalignment.

Further, according to the second invention, in the mode in which characters inputted by the key are immediately printed, it is possible to select a character type within the size that can be printed in one scan. is minimized, making it possible to suppress printing misalignment.

[Brief explanation of drawings]

Fig. 1 is a conceptual diagram of the configuration of an electronic typewriter in the embodiment; Fig. 2 is a diagram showing the dot structure of a full-width character pattern in the embodiment; Fig. 3 is a diagram showing the dot structure of a double-height character pattern in the embodiment; FIG. 4 is a flowchart of key processing of the embodiment, FIG. 5 is a flowchart of character processing of the embodiment, FIG. 6 is a flowchart of direct print mode of the embodiment, FIG. 7 is a flowchart of delay print mode of the embodiment, FIG. 8 is a flowchart of a key processing task in another embodiment. In the figure, ■...CPU, 2...ROM, 3...Keyboard, 4...Character font ROM, 5...RAM
, 6... pattern buffer (PTBUF), 7...
・Key buffer (KYBUF), 8...Print mode club (MODFLG), 9...Character size club (SIZBUF) 10...Printing section, 11...
Carriage drive section, 12... vapor feed drive section, 13... thermal head drive section.

Claims (2)

[Claims] (1) A document processing device that has both a first mode in which characters input by a key are immediately printed and a second mode in which printing is performed on a group of keys that have already been input only after a predetermined print start instruction is given, a switching means for switching between the first mode and the second mode; an input means for inputting characters of different sizes at least in the vertical direction; and characters input by the input means need to be printed over multiple lines. and fixing means for fixing the switching means to the second mode when the document processing apparatus has a certain size. (2) A document processing device that has both a first mode in which characters inputted by a key are immediately printed and a second mode in which printing is performed on a group of keys that have already been input only after a predetermined printing start instruction is given, switching means for switching between the first mode and the second mode; input means for inputting characters of different sizes at least in the vertical direction; A document processing device comprising: fixing means for fixing a range of character sizes input by the means to a size that can be printed only within one line.