JPS609762A - Recording system - Google Patents

Abstract

PURPOSE:To permit the recording of characters by varying their styles without the need for excessive memory capacity by a method in which the print starting positions of each character are set up in such a manner that they are biased by preset numbers of dots for each from a reference position to the downstream side. CONSTITUTION:In printing the italic style of characters, memorized content stored in a character generator 7 is used as such, but when the print starting position of the upstream side of scanning direction is greatly biased by as much as dot numbers W0 for the initial scanning line l0.0 and also by as much as dot numbers W1 for the following line l0.1. For the following scanning line l0.2, the print starting position is biased by dot numbers W2. These dot numbers W0, W1, and W2 to be biased are set up to be in the order of W0>W1>W2. In this way, the italic style of characters are printed by using the content stored in the generator 7 as it is.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a recording system in which dots are used for printing. In the prior art, the dot printing positions of characters to be printed are stored in a so-called character generator for each character. A character generator requires a large storage capacity because it stores information regarding different dot printing positions for each font of the character, such as Gothic and Italic.

An object of the present invention is to provide a recording method that does not require excessive storage capacity and allows printing and recording with different fonts.

FIG. 1 is a block diagram of an embodiment of the present invention. The @ sign from the computer 1 is transmitted via the data node 2, address bus 3, and control bus 4 to the text bar).
The text buffer 5 input to sofa 5 is input to bus 6.
A character control signal is provided from the text buffer 5 to the character generator 7 via line 8. This text buffer 5 is also provided to the control circuit 12 via line 11. The dot clock signal from the control circuit 12 via the line 13 is applied to the dot counter 14, and the carry signal from the dot counter 14 is counted. Dot counter 14 and column counter 16 are cleared by a signal from line 30. This signal from line 80 is counted by line counter 19, and its carry signal is counted by row counter 21 from line 20. The column counter 19 and row counter 21 are cleared by the recording start signal.The column address signal from the column counter 16 is sent via the bus 24, and the row address signal from the row counter 21 is sent via the text bus 25. The character code is input into the buffer 5, the character code in the text buffer 5 is specified, and its contents are input into the character generator 7.

Dot data corresponding to the character code specified in the text buffer 5 from the character generator 7 is given to the data selector 27 from the bus 26, and the video signal for each scanning line is sent from the line 28 to the output means 22.
The count value of the dot counter 14 is supplied to the data selector 27 via a bus 29. The control circuit 12 is supplied with a reference clock signal of a constant frequency from the reference clock circuit 31 .

FIG. 2 is a perspective view of a portion of the output means 22. FIG.

Laser light from a laser source 33 is applied to a modulator 35 through a lens 34, and is applied to a rotating polygon mirror 37 through a lens 36. The rotating polygon mirror 37 is rotated by an arrow 39 by a motor 38.
rotated in the direction of The laser beam from the rotating polygon mirror 87 scans the right cylindrical photoreceptor 41 in the axial direction of the photoreceptor 41 through the lens 40 as shown by the arrow 42 . This photoreceptor 41 is rotationally driven as indicated by an arrow mark 43. On the 1111 side upstream of the photoreceptor 41 in the scanning direction 42, there are four sensors 44 for detecting beam light.
A signal from the control circuit 12 is provided to the control circuit 12 via line 45. A signal for each dot is applied to the modulator 35 from the data selector 27 via the line 28, and the light beam is modulated by this signal. The modulated light is transmitted to the photoreceptor 4
1, an electrostatic latent image is formed over an area 41& for one page.

FIG. 8 is a block diagram showing a specific configuration of the control circuit 12. The reference clock signal from reference clock circuit 31 is frequency-divided by frequency divider circuit 47 and a dot clock signal is derived from line 18. This reference clock signal is counted by counter 48. counter 48
is cleared every scan line by a signal from sensor 44 via line 4-5. The counter 48 is a counter that determines the printing start end. The reference clock signal is also counted by a counter 49, and the count value is given to a comparator 50. The counter 49 is a counter that determines the number of dots in the scanning direction.

A carry signal from line counter 19 via line 20 is applied to address control circuit 51, and the output of address control circuit 51 is input to memory 52. As will be described later, the memory 52 stores contents corresponding to the number of dots shifted from the printing start position for each scanning line for italic type. Comparator 50
compares the counted value of the counter 49 with the contents of the memory 52, and when they match, gives a high level signal to the line 80.

The changeover switch 53 responds to a signal applied to line 11 from the text buffer 5, and outputs the counted value from the counter 48 from a common contact 54 to an individual contact 55 during so-called normal printing, such as a blank font, to line 30. When printing in italics, the signal is applied to the counter 49 via the individual contact 56 to clear the counter 49.

FIG. 4 is a front view showing the recording state of the recording paper 57 printed by the output means 22. ■Characters set in advance are printed on the recording paper 57 for each page.") Lid area A0.0.A0.1.A0゜2, Ao, 8...
・;A1.0. A1.1. A1.2. . . . can be printed in 22 columns in the horizontal direction, and such columns can be printed in 20 rows in the vertical direction. Character area A0.0. A0.1. . . , the AO 121 can be scanned with 82 horizontal scanning lines that scan horizontally, and each scanning line can record 32 dots in one character area.

FIG. 5 is a front view of the recording paper 57 showing the recording state near the character area A0.0. The character A is normally printed in dots in a Gothic font as shown in FIG. 5(1). Character area A0. The lines to be scanned are referenced 10.
0.7?0.1. . . , 1O, 81, there are a total of 82 lines, and each line has dots do, 0 .
A total of 82 dots, dO,1, dO,2, . . . , dO,81, can be recorded. In the character area A1.0 that vertically follows the character area A0.0, scanning lines #1.0. n1.1. ..., 11°81 is scanned. In addition, in the character area A0.1 that is horizontally adjacent to the character area A0.0, the dot position is indicated by the reference mark d1.
．． 0. d1.1. ..., dl,81.

Referring to FIG. 6, assume that normal printing is performed in Gothic fonts as shown in FIG. 5(1).

In order to print one page, as shown in FIG. 6 (1), a signal that is low repeat V is derived from the line 23 over a period during which one page is printed, and this causes the line counter to 19, the row counter 21 is cleared and counting begins.

The changeover switch 53 provided in the control circuit 12 is
In response to a switching signal from the text buffer 5, the common contact 54 remains electrically connected to the fixed contact 55. The counter 48 counts the reference clock signal that determines the printing start position, and derives a high-level signal as indicated by 6th LN(2) every time 22 columns of the recording paper 57 are scanned.

The dot clock signal derived from frequency divider circuit 47 to line 18 causes dot counter 14 and column counter 16 to be cleared by a signal from line 80, which may be shown in FIG. 6(3). At this time, the 0th line 10.0 in the first character area A0.0 is scanned. Based on the outputs of the column counter 16 and row counter 21, the text buffer 5 specifies the character to be output to the character area A0.0. Therefore, the text buffer 5 provides the character generator 7 with a character code signal corresponding to the character to be printed in the character area A0.0.The output of the up-line counter 19 is provided to the character generator 7. As a result, the character generator 7 supplies dot signals from the bus 26 in parallel to the data selector 27 for printing the 0th line 1000 of the corresponding character. The data selector 27 serially outputs image signals for printing dots ao, o, ao, i, . to line 28 to modulator 3.
Give to 5. In this way, in the character area A, 0.0, dots dO00 to dO00 to dO00 during scanning of the 0th line 10.0.
Q.

31 printing is performed. As a result, the dot counter 14 automatically returns the first count to zero, and also
5 to derive the carry signal. Thus column counter 1
6 increments the count value by 1 from "0" to "1", and the character to be printed in the adjacent character area A O,1 will be indicated to the text buffer 5. This will cause the text buffer 5 to gives the character generator 7 a signal corresponding to the character to be printed in the character area A0.1. In response, the character generator 7 sends a signal corresponding to the dots of only the O-th line specified by the line counter 19 to the bus 2.
6. In this way, when the 0th line 10.0 scans the character area A O, 11,
, 0 to d1.81, and at this time the dot counter 14 counts up for each dot. The counter contents of the line counter 19 are incremented by +1, and the same goes for each line #0.2. #0.8. ... is scanned, and when the last scan line #0.81 in the 0th row is scanned, the count value of the line counter 19 becomes roJK.
Return D, this Tokirou counter 21 is incremented by 1 from the count value "0" to "1", and the tenth placed character area A1.0 and the horizontally adjacent character area are designated. Become. In this way, up to the last 190th item is printed.

Assume that the printing paper 57 is printed in italics as shown in FIG. 5(2). Also in this case,
Although the recorded contents stored in the character generator 7 are used as they are, what should be noted is that each scanning line 10.0. #0.1. etc., the printing start position @ on the upstream side in the scanning direction is shifted downstream in the scanning direction from the reference position S by a predetermined number of dots for each scanning line. The number of dots to be shifted is sequentially set smaller in subsequent scanning lines. For example, as shown in FIG. 5(2), from the reference position S, the first scanning line 1O1
In 0, it is shifted by the number of dots WO, in the next succeeding 1O01, it is shifted by the number of dots W1, and in the subsequent scanning line eO12, it is shifted by the number of dots W2, and by the number of dots that are shifted. WO, W1.
W2 is set so that W □ >W i ) W 2 (1). In this way, printing in italics is performed using the stored contents of the character generator 7 as they are.

When printing in italics, a switch change signal from the text buffer 5 via line 11 switches the common A contact 54 of the changeover switch 58 to the individual contact 56. In the memory 52, the line l0°0, nO,1, lO,2, . . . during scanning specified by the line counter 19 is stored.
・W□, W by the number of dots that should be shifted in response to
1. W2. The counter 49 in which .
．． 0°60.1. #0.2. . . . Count the number of dots from the reference position S for each scan line lO,0.
, 10, 1, 10, 2, . . . by a predetermined number of dots from the printing start position S, WQ, Wl, W2 . The signal from the character generator 7 is applied from the line 28 to the modulator 35 via the data selector 27 from a position shifted by .

In operation, when the 0th line 10.0 is detected by the sensor 44, the counter 48 is cleared, and in response to the output of the counter 48, the counter 49 is also cleared. The address controller 9 circuit 51 of the control circuit 12 is controlled by the memory 52 by a signal from the line counter 19 via the line 20.
WO is given to the comparator 50 by a predetermined number of dots to be shifted corresponding to the 0th line 1O80 stored in . When the counter 49 counts a predetermined number of offsets WO from the reference position S, the comparator 50 outputs a signal to the line 30. As a result, the line counter 19 provides the data selector 27 from the bus 26 with dot information in the character area A0.0 specified by the first line IO, OK/OK counter 21 of the character generator 7.

The data selector 27 selects the bus 2 from the dot counter 14.
9, the signal of the character areas AO, O on the 0th line 10°0 is output from the line 28 to the means 2.
2 modulator 85. After the first character area A0.0/32 dots has been scanned in this manner, the column counter 16 is incremented by one. Character area A 0.1 0th line 7J0.0
Dot printing is performed during scanning. After printing is performed over 22 columns of the 0th line 1O10 in this way, the output of the counter 48 causes the counter 49 to
performs all counting operations for the first line IO,1 in the 0th row. When the counter 49 counts a predetermined number of dots W1 from the print start position @8, the comparator 50 outputs a signal to the line 30, thereby incrementing the line counter 19 by one. For this purpose, the line counter 19 causes the signal to be printed to be derived from the character generator 7 during the scanning of the first line 10.1. In this way, comparison scan line 10.0. #0.1.10.2.
... for a predetermined number of dots WO, W1 . W2
．． . . . The characters in italics are formed by printing shifted by one step.

In the above embodiment, W□, W1 . Although W2 was shifted downstream in the scanning direction and became an italic font shifted to the right in Figure 5 (2), as an embodiment of the pond of the present invention, it was changed to a font shifted to the left as shown in Figure 7. It is also possible to do so. In the embodiment shown in FIG. 7, wg, w1 . w2. . . . are sequentially set larger.

As described above, according to the present invention, it is possible to print characters in a Thf font based on common content related to characters stored in advance, so that the storage capacity can be reduced.

[Brief explanation of drawings]

FIG. 1 is a block diagram of an embodiment of the present invention, FIG. 2 is a perspective view of a part of the output means 22, FIG. 8 is a block diagram showing a specific configuration of the control circuit 12, and FIG. 4 is a recording A front view of the paper 57, FIG. 5 is a front view showing the state printed on the recording paper 57, FIG. 6 is a waveform diagram for explaining the operation, and FIG. 7 is a recording paper of an embodiment of the present invention. 51 is a front view showing a state in which characters are printed.

Claims (1)

[Claims] (multiple drivers) 1 scanning line for selective printing,
In a recording method that prints characters while shifting them in a direction perpendicular to the scanning line, what is the printing start position of each character on the upstream side in the scanning direction? The dots are shifted downstream in the scanning direction from the reference position by a predetermined number of dots for each scan line, and the shifted number of dots is set to be successively smaller or larger in subsequent scan lines. Recording method.