JPS59187861A - Recording system - Google Patents

Abstract

PURPOSE:To elevate the quantity of color recording such as black or the like, by making the dot diameter in recording dot on paper with No.1 and No.2 dot recording elements be the same as the dot diameter with No.3 dot element. CONSTITUTION:For example, the ink of cyan, magenta and yellow are fed to No.1 to No.3 color recording nozzles 1-3 and recording is carried out by discharging liquid drops by the drive of piezoelectric element or the like. At that time, the nozzles 1-3 on carriage 5 are, in a horizontal straight line state, arranged. Then, in recording special color, for example, printing in black color, it is generated by making the liquid drops discharged from nozzles 1-3, while being mixed, reach the same point and the black dot B1 is formed. Further, the black dot B2 is formed from black color nozzle 4. Therefore, the black color recording time by nozzle 4 only can be reduced by half and the recording speed can be raised 2 times. Because the dot B1 is formed by mixing 3 colors, its dot diameter becomes larger than that of dot B2. Therefore, by making the diameter of nozzle 4 larger than those of nozzles 1-3, the diameters of dots B1 and B2 are equalized.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field) The present invention relates to a dot recording system, and more particularly to a recording system that improves the quality of 2-recording.

(Conventional) In conventional recording devices, it is common to form other colors by mixing or coexisting two or more colors.
In that case, there is a tendency for the υ area to become wider than the dot formation area due to a single color.

This is undesirable as it causes deterioration in recording quality.

(Objective) In view of the above-mentioned points, an object of the present invention is to provide a recording method that improves the recording quality by making the dot diameters substantially the same.

(Example) FIG. 1 is a diagram showing a recording means according to an example of the present invention, and shows, for example, an arrangement example of inkjet nozzles. In the figure 1.2
,! 1 is a color recording nozzle to which, for example, cyan, magenta, and yellow ink is supplied, and recording is performed by ejecting droplets by driving a piezoelectric element or the like. 4 is a nozzle for discharging black ink. A carriage 5 carries the nozzles 1 to 4 and runs along the width direction of the recording paper.

The nozzles 1.2.3 on the carriage 5 are arranged horizontally and linearly, and the intervals are m from each other, assuming the minimum recording resolution is 4.
@71 or Le l away.

However, m and n are integers and may be 77L m n. The black nozzles 4 are arranged on a line perpendicular to the line connecting the three nozzles 1, 2, and 6, and the interval between them is also mJ.

Arranged as above, when recording a specific color, for example black, 1.2
, the droplets ejected from the nozzles B are caused to reach the same point to generate black color due to color mixture, thereby forming a black color Bl on the paper. Further, black dots B2 are formed by the black nozzle 4.

As a result, the black recording time using only the black nostle 4 can be halved at least, and the recording speed can be doubled.

When forming the black dots B1 and B2, since B1 is formed by mixing six colors, its dot diameter is larger than that of the single color dot B2.

FIG. 2 shows an example of solving this problem, in which the diameter of the black nozzle 4' is made larger than the diameter of the nozzles 1, 2, and 6. Also, a well-known gradation control method such as increasing the driving voltage or the like may be applied.

With this configuration, the diameters of the black dots B1 and B2 can be made almost the same, and the recording quality can be improved.

In FIG. 2, p is also an integer and may be p-m-le.

FIG. 6.4 shows yet another example of nozzle arrangement.

On each side above, replace black nozzle 4 with other nozzles 1.2.5
Since the nozzle is arranged lower than the nozzle, even if ink accidentally falls from above, it will not be noticeable since it is a black nozzle, which is particularly preferable in the case of the example shown in FIG.

Furthermore, the present invention is applicable to all cases where other colors are generated by mixing two or more colors.

The present invention can also be applied to the case where dots of two or more colors are mixed to generate other colors.

Figure 5 is a control block diagram, CG is a character generator, T
C is a timing control circuit that controls the driving of each nozzle 1 to 4.

For example, in the case of the nozzle arrangement shown in FIG. 1, if recording is performed while moving the carriage 5 to the right, the carriage 5 reads the scale 6 for confirming its position and informs the control circuit TO. For this) First of all, an anime game)
AI is opened and the nozzle 1 is driven by the output of CG, and after the gear ridge 5 has moved by Le no, the ant game) A2
open and drive the nozzle 2, then move the carriage 5 to m
After moving by 71, open A5 and drive nozzle 6. By kneading, the black drum in Figure 1) Bl
is formed. At this time, the AND gate A4 is also opened and the nozzle 4 is also driven, so that a drum B2 is formed. Similar results can be achieved with other nozzle arrangements.

(Effects) As described above, the present invention is extremely preferable because it can improve the recording quality.

Further, the present invention is not limited to inkjet recording, and can be applied to other recording methods such as thermal transfer recording using a sirl head and a color ink ribbon, and other color recording methods.

It is a control block diagram.

1...0φ yellow nozzle, 2#♂・1111 magenta nozzle, ri 111+111111 cyan nozzle, 4
#ψ...-black nozzle 5 mm1-carriage

Claims (1)

[Claims] comprising first, second and sixth dot recording elements, the first, second and sixth dot recording elements;
A recording method characterized in that the diameter of dots when dots are recorded on paper by the second dot recording element and the diameter of the dots produced by the sixth dot recording element are made substantially the same.