JPS60120066A - Charge control type color inkjet printer - Google Patents

Abstract

PURPOSE:To make joint between lines less visible by differentiating the layout of heads in various colors in the direction of deflection. CONSTITUTION:An inkjet head 21, a charging electrode 22, a deflection electrodes 23 and 24, a gutter 25 and the like are arranged on a carriage 10 respectively for colors of black B, cyane C, magenta M and yellow Y and the heads 21 are arranged at an interval l equivalent to 8 dots. Data is transferred to the charging electrodes 22 of the heads 21 corresponding to printing information signal for each head, the presence of deflection at 32 stages is controlled accordingly. At this point, as the heads 21 of the respective colors varies by 8 dots, joints in one scan are shifted by 8 dots. Thus, joint parts can be less visible even when an image is printed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a charge-controlled color inkjet printer.

Conventionally, when a charge-controlled inkjet printer of the Kasami limb serial scanning type is used for color recording, the paper is fed by performing 32 steps of deflection for each color and printing 32 lines in one scan. However, at this time, since each color was printing in the same area, the connection between each scan of each color occurred on the same line, and this line-to-line connection was conspicuous.

Purpose The present invention has been made in order to solve the above-mentioned drawbacks of the conventional technology. In particular, in a charge control type color inkjet printer, the arrangement of the heads of each color is devised, thereby making the line-to-line connections inconspicuous. This is what I did.

1-One Piece The configuration of the present invention will be described below based on one embodiment.

FIG. 1 is a perspective view of essential parts for explaining an embodiment of an inkjet printer according to the present invention, in which lO is a carriage, 11 and 12 are Cali-Rad guide rods,
0 is a filter, 21 is an inkjet head, 22 is a charging electrode, 23.24 is a deflection electrode, 25 is a gutter, B
indicates a head for black, C for cyan, M for magenta, and Y for yellow. On the carriage 10, as shown in the figure, for each color there are Infusiera 1-heads, charging electrodes,
Deflection electrodes, gutters, etc. are arranged, and each head is arranged at an interval of 8 dots Ω. Data corresponding to the printing information signal is transferred to the charging electrode of each head for each head, and the presence or absence of the 32 stages of deflection is controlled accordingly. At this time, in the present invention, since the heights of the heads differ by 8 dots, the l-scan connections are shifted by 8 dots, and therefore,
Seams are not noticeable when printing images.

Figure 2 shows the deviation (8 dots) of the nozzle surfaces of black B, cyan C, magenta M, and yellow Y, and
Each deflection area (32 dots) B^, C^2M
^, This shows the state of YΔ.

Effects As is clear from the above explanation, according to the present invention, the connections between each color are shifted, so that the connections become less noticeable as a whole. Furthermore, since the connections between each color are shifted, there are advantages such as less occurrence of ink flow.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of essential parts for explaining an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between the nozzle surface and deflection area of each head. 10... Carriage, 20... Filter, 21.
...Head, 22...Charging electrode, 23.24...Deflection electrode, 25...Gutter.

Claims (1)

[Claims] A charge-controlled color inkjet printer characterized in that the heads of each color are mounted at different positions in the direction of deflection.