JPS6032692A - Printing apparatus - Google Patents

Abstract

PURPOSE:To make a number of printable characters per one page constant regardless of a character size, by storing a margin and a page end as a number of characters per one line (in a traverse direction) and a number of lines per one page (in a vertical direction). CONSTITUTION:A control circuit 3 writes a number (m) of printable characters per one line and a number (n) of line renewable lines per one page in memory 16 corresponding to inputs due to the figure key of a keyboard part 1 and the MRGNSET, PEND SET key of a function keyboard part 2. When a type unit changes from 1/10 inch to 1/15 inch, a column feed amount changes from 12g to 8g (wherein g is a min. unit of a column feed amount) while a line feed amount changes from 12f to 8f (wherein f is a min. unit of a minute feed amount in a line direction at a pitch of 1/10 inch). When a printable amount per one line and a line renewable amount per one page are respectively set in a number (m) of characters (a number of columns) and a number (n) of lines, the number of characters is constant and does not change even if a printing region changes.

Description

[Detailed Description of the Invention] (Technical Field) The present invention provides a printing area enlargement/reduction function of a printing device.
In addition, especially when the number of characters changes when using typeface, the line pitch and digit pitch can be adjusted, and the values for margins and page ends can be memorized as the number of digits and lines, regardless of the length dimension. The present invention relates to a printing device in which the number of characters that can be printed per page is constant.

(Prior art) In conventional printing devices, such as electronic typewriters, the line feed amount is controlled by operating levers or switches labeled "L", "1", "2", etc. Previously, the options were 1 line, 1 line, 2 lines, etc., but the conventional 1 line was selected.
The line is the absolute amount of leading, and leading 1 is 1/10,
Even if the font size was changed to I/12 or 1/15 inch, the line feed t did not change. For this reason, there is a drawback that even if the character height changes, the line spacing does not change, resulting in a relative imbalance in the spacing between characters and lines. However, since the printable leaves per line (horizontal margin) and the amount of line breaks per page (vertical page end) were set in length dimensions, when the font size changes, The disadvantage is that as the font size increases, the number of characters that can be printed per page decreases, and conversely, as the font size decreases, the number of characters that can be printed increases.

(Purpose) This invention was made in order to improve the conventional scale change as described above, and it provides a printing device with a minute line direction feeding function, and the cumulative number of minute line direction feeds allows one line to be printed. If the character size of the type unit changes, the feed pitch corresponding to the character size is 1/1, 0.1/12 t or 1/15 inch, etc. Corresponding to both, the cumulative value of the minute line direction feed is changed so that the line feed amount is proportional to the column feed, so that the balance between characters and the space between lines does not change relatively. In addition, the number of characters that can be printed per line and the number of lines that can be printed per page are stored as the number of characters and lines, so that the number of characters that can be printed per page remains constant even if the font size changes. The purpose is to make it happen.

(Example) Hereinafter, this invention will be explained based on the drawings.

FIG. 1 is a block diagram of a line feed system, a shift system, and a control system in an electronic typewriter according to an embodiment of the present invention. 1 is a keyboard section for inputting all information related to printing operations such as characters and symbols into the typewriter;
O~9. Various symbol keys etc. are arranged, line 1. The signal is input to the control circuit 3 via. This is a function keyboard section for inputting information regarding function operations such as space, carriage return, and paper feed, and mode settings such as margin set, tab set, and reset.Similar to keyboard section 1, line 12 is The signal is input to the control circuit 3 via the control circuit 3. This control circuit 3 includes a read-only memory that converts microinstruction information for sequential control into digital signals, stores them, converts them, and discriminates the information, and an arithmetic unit that performs operational processing according to information from the read-only memory. 1. It consists of a group of registers that hold numerical data, an adder for executing calculations, and a control section for performing other controls. 4 is a memory for storing data regarding the amount of line feed and column feed, and 3-a line feed number instruction signal (1, ,
2 lines) and the shift amount instruction signal (1/10°L/l 2 or L/15 inches), data indicating the optimum value of the line advance amount (length) can be stored via the Li/13. It is output to the control circuit 3.

A drive circuit for the 5-digit single line feed motor 6 converts the line feed motor drive signal pulse outputted from the control circuit 3 via the line 14 into a signal for driving the motor and amplifies the power. 6 is a stepping motor for line feeding, which rotates an integral multiple of the minimum feed amount in response to the number of pulses output from the drive circuit 5 via line 1, and causes the gear system 7 to rotate. , and applies rotational force to the planer/9 that feeds the paper 8. A carriage 10 consisting of a type unit, a hammer, an ink ribbon, etc. moves in the row direction (
1), and printing is executed.

The driving force necessary for printing operations such as rotation of the type unit, hammer operation, and ink ribbon feeding is controlled by the control circuit 4. Various control signals from the control circuit 3 are input to the drive circuit 11 via the line 16, and the drive circuit 11 , the control signal is amplified in power to a driveable level and is supplied to the carriage 10 via line 17 as a drive signal.

Regarding the feed in the digit direction, the control circuit 3 reads the feed amount data from the memory 4 via the line ls, and sends a control pulse to the digit feed motor 13 via the line l, as in the row direction feed operation described above. and output it to the drive circuit 12, line l.
, and is supplied as a drive signal to the shift motor 13. The shift motor 13 rotates an integral multiple of the minimum shift amount in accordance with the number of pulses of the drive signal, transmits the rotation to the gear system 14, and moves the carriage 10 in the digit direction via the belt 15. will be moved.

- As an example, if VL2, which is the feed amount for one line when the digit pitch is t and zto inches, is the minimum unit amount of the minute line direction feed amount, then the line feed amount required for one line is 12 amounts. When the digit pitch changes from 1/12 inch to L/15 inch, the respective line feed amounts become smaller in proportion to the change in digit pitch, such as 1of and sf. In other words, the cumulative amount of the minimum unit f of the line feed amount, 12f, lOf, and 8f, corresponds in proportion to the change in the digit pitch. Also, the line feed amount instruction signal from the function keyboard section 2 is not one line, but
In the case of a line or two lines, the values of r2f, tof, and sf, which are the cumulative amounts of the minimum unit f, which is the feed amount for one line, are multiplied by lλ and 2, respectively, and in the case of l\ line, 18f, 1
5f, L2f, 24f for 2 lines.

Line spacing amounts of 20f and 16f are obtained.

Similarly, if the minimum unit of digit feed time is 120 inches = q, a digit pitch of VLO inch requires a feed meter of 12 (J), and 1/12 inch and 715 inches require a feed meter of LOQ and 8 g, respectively. quantity is required.

Here, input signals from the keyboard section 1 to decoy numeric keys are input (via the control keys ``+ + 12 f'') and line in 11..* which allows a line feed per page.
The data is written as data to the merge/begeft memory 16 via the merge/bageft memory 16.

If the digit pitch is 1/10 inch and the line feed is set to 1 line, the feed amount is 12q9 and the line feed amount is i2f.
becomes.

The second comparison is based on printing when replacing a 110 inch type unit with a 1/15 inch type type unit.
As shown in the figure.

Figure 2a shows a conventional example, from l/10 inch to I/[5
When the type unit is changed to inches, the number of digits changes from 12 (J to 89), but the line number remains unchanged at 12f.For this reason, the space between the lines occupies a large proportion. .

FIG. 2b is an example of printing according to the present invention, when the type unit is changed from VLO 1/1 to 1/15 inch,
The digit feed meter changes from L2q to 89, and the line feed amount changes from 12f to 8f, and the changes occur at the same ratio in both the digit and line directions, which means that the printing has been reduced by 7-. . On the other hand, the type unit is 1/
When changing from 15 inch to 1/10 inch, printing can be enlarged in the same way.

In this way, the printable amount per line (horizontal direction: margin) and the allowable line feed amount per page (vertical direction: page end) are set by the number of characters (number of digits) m and the number of lines n, respectively. If this is done, even if the character size changes and the printing area is reduced or expanded, the number of characters remains constant and does not change, as shown in FIG. 2b. That is, there is no excess or deficiency in the number of characters as in the part Ll "1 "1 shown in FIG. 2a.

In the figure, M indicates the margin length and N indicates the page end length.

FIG. 3 is a flowchart of the operation according to this embodiment. First, the user sets the paper 8 on the platen 9 (step 1), then presses the carriage return or paper feed key on the function keyboard section 2 to set the number of digits m and the number of lines n (step 3).
. These number of digits m and number of lines n are stored as data from the control circuit 3 into the margin page eft memory 16 (
Step 4). Furthermore, the digit pitch (1/10, 1./1
2 and 1/15 inch) and feed pitch per line feed (
t, tH and 2 lines) are input from the function keyboard section 2 to the control circuit 3 (step 5), and stored as data in the digit pitch and line pitch memory 4 (step 6). If the digit pitch and row pitch signals change during the process, the data in the digit pitch and row pitch memory 4 are rewritten (step 7). In this way, the setting before printing of the electronic typewriter is completed and the electronic typewriter enters the standby state A. 1 normal molar character becomes 1 by input from keyboard part 1
Each time a character is executed (step 8), the print margin (
It is checked whether the printable character count (m) has been exceeded (step 9), and when this margin is reached, it is then checked whether the page end (the number of lines that can be broken (n)) has been exceeded (step 1.0). If the end of the page has not been reached, a C line feed is performed using the carriage return or paper feed key of the function keyboard section 2 (step 11), and the process returns to the standby state AK where normal printing is possible. If the end of the page is reached, input from the keyboard section 1 is prohibited to prevent printing from occurring, and printing is interrupted (step 12).Then, the user replaces the paper 8 and presses C. (Step 13), and the next new paper is set (Step 1).

(Other Embodiments) As an application example of the above embodiment, if an electronic typewriter is equipped with a skewer for measuring the paper size in terms of width and length, when the printing area is enlarged or reduced, It is also possible to provide a function that issues a warning and prevents printing in the event that the printing area exceeds the paper size, which may occur by mistake.

(Effects) As explained above, the present invention expands the printing area,
In a printing device that has a reduction function, the margin and page end are defined as the conventional margin length (paper width) and length to the page end (paper length) per line (horizontal direction). Since the configuration is configured to store the number of characters and the number of lines per page (in the vertical direction), the number of characters that can be printed per page and the number of characters that can be printed per line are constant, making it easy to expand or reduce the print area. sometimes,
Printing with a constant number of characters per page can be realized, and the effect that there will be no excess or deficiency of characters on each page can be achieved.

[Brief explanation of the drawing]

Fig. 1 is a block diagram showing the line feed thread, shift system, and control system in an electronic typewriter that is an embodiment of the present invention, and Fig. 2a is an example of printing when replacing the type unit with a conventional electronic typewriter. , FIG. 2b shows an example of printing equivalent to the previous time (enlarged, reduced) by the electronic typewriter of the present invention, and the third
The figure is an operation flowchart of this embodiment. 1...Keyboard section 2...Function keyboard section 11
- 3...... Control circuit 4... Line feed lance 1 digit feed amount data memory 5... Line feed motor drive circuit 6...・・・
・・・・・・Feeding remoter 7・・・・・・Transmission gear system 8・・・・・・Paper 9・・・・・・Platen 10・・・・・・Carriage 11... Carriage drive circuit 12... Digit feed motor drive circuit 13...
・Digit feed motor 14...Gear system 15...Belt 16...Margin/page end memory 12-

Claims (1)

[Claims] ■Equipped with a means to store the number of printable digits per line and the number of printable lines per page, and even if the font size changes, the digit pitch and line pitch can be adjusted in response to the change in font size. By changing the printable length per line (horizontal direction) and printable length per page (vertical direction), the printable length per page can be changed without changing the number of digits and lines. A printing device characterized by being configured so that the number of characters that can be printed is constant.