JPS6113253B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention enables the contents of a plurality of different display devices to be hard-copied onto a single recording sheet, thereby greatly increasing the amount of information on a single recording sheet. At the same time, the efficiency of recording paper usage is improved.

Traditionally, displays with poor resolution, e.g.
For CRT displays (320 x 240 dots), etc., the diameter of the ink droplets printed on the recording paper is
It is much smaller than the diameter of the dots on the display surface of a CRT display, so the dots are not visible and the resolution is poor. To improve this, the area where the dots are printed is multiplied by 1/n and copied onto a single sheet of recording paper.
If you double the number of copies, the dots will appear and the resolution will improve, but since one sheet of recording paper is used per screen, for example, if 1/n = 1/4, one sheet of recording paper will Only /4 area is used, remaining
3/4 of the area remained blank, resulting in extremely poor usage efficiency of recording paper.

The present invention has been made to overcome the drawbacks of the prior art as described above, and one embodiment thereof will be described in detail below with reference to FIG. In Figure 1, 10 is a CRT display,
11 is a printing pulse generation circuit, 12 is a printing control circuit, and the portion surrounded by these dotted lines represents, for example, a part of a cylindrical scanning type ink jet printer, the structure and operation of which are already well known. Therefore, detailed explanation thereof will be omitted. In FIG. 1, 13 to 16 are amplifiers, 17 to 20 are division point position detection circuits, 21 is a printing position designation circuit, and 22 is a printing position designation switch.

FIG. 2 is a diagram for explaining the recording paper dividing method according to the present invention, and shows an example in which an A4 size recording paper 1 is divided into four recording areas represented by A, B, C, and D. . There are various ways to divide the recording paper into four areas, but for example, as shown in Figure 2, four position sensors X ₁ , X ₂ , Y ₁ , Y ₂ are placed, and these positions are The printing start points a, b, c, and d of each recording area are determined by the sensor. That is, area A detects point a at X ₁ and Y ₁ , area B detects point b at X ₂ and Y ₁ , and area C detects point c at X ₁ and Y ₂ . D is determined by detecting point d at X ₂ and Y ₂ .

Next, we will explain the case where 320 x 240 dots are copied onto the recording paper shown in Fig. 2 using the CRT display device shown in Fig. 1.
If you print in mm, the CRT screen is 80 x 60 mm.
(Refer to area A in FIG. 2, shaded area). Prior to starting copying, the printing position is designated by the printing position designation switch 22.
Now, if we specify area A, detectors X ₁ and Y ₁
Accordingly, point a is detected and printing pulses x ₁ and y ₁ are output. After printing pulses x ₁ and y ₁ are output,
Until the recording paper 1 is moved, for example, 20 mm in the main scanning Y direction and the inkjet ejection head is moved, for example, 30 mm in the sub-scanning X direction, the point a position detection circuit 1
The signal No. 7 is blocked by the printing position designation circuit 21, but when the recording paper is moved by 20 mm in the main scanning direction and the inkjet ejection head is moved by 30 mm in the sub-scanning direction, the printing position designation circuit 21 blocks the printing position designation circuit 21. A printing start signal is generated, then a printing pulse is generated at 4l/mm.
240 pulses are output, and the CRT
The contents of the display 10 are printed on the recording paper 1 in the main scanning direction. That is, the first, second,
3. 240 printing pulses are generated for each line of n..., and the lines of each line are printed one after another in parallel at a certain interval, and the inkjet jet head is scanned 320 times in the sub-scanning direction. Then, printing to area A is completed. Printing on areas B, C, and D can be performed in the same manner. In addition, when the CRT display device is a display device for an electronic computer,
The areas A to D can be specified from the computer side.

As is clear from the above description, according to the present invention, information that was conventionally printed on four sheets of recording paper can be printed on one sheet of recording paper, so the storage space for recording sheets can be reduced. It is possible, and
Since a large amount of information is printed on the same sheet of paper, the information density is high, and there are advantages such as ease of comparison, especially in the case of comparative information.

[Brief explanation of drawings]

FIG. 1 is an electrical circuit diagram for explaining an embodiment of a hard copy apparatus according to the present invention, and FIG. 2 is a diagram for explaining an example of a recording paper dividing method according to the present invention. 10...CRT display, 11...Printing pulse generation circuit, 12...Printing control circuit, 13-1
6...Amplifier, 17...Point a position detection circuit, 18
...B point position detection circuit, 19...C point position detection circuit, 20...D point position detection circuit, 21...Printing position designation circuit, 22...Printing position designation switch.

Claims (1)

[Claims] 1. Equipped with means for dividing the recording area of the recording sheet into several areas, means for specifying a specific area within the divided area, and means for printing the contents of the display device in the specified area. A hard copy device for a display device, characterized in that: