JPS62227769A - Recorder - Google Patents

Abstract

PURPOSE:To enable parallel processing for each color to be performed while mechanically synchronizing each color, by a construction wherein an intermediate transfer body is provided corresponding to each color ink and each recording head, and the distance along the intermediate transfer body from a position for recording by the head to a position for transferring onto a transfer recording paper is set to be different for different colors so that images in individual colors are transferred to the paper in register with each other. CONSTITUTION:A heat-fusible type ink sheet 1 on which three color inks 1y (yellow), 1m (magenta), 1c (cyan) are arranged is fed from a payout drum 2 to a take-up drum 3, between while thermal heads 4c, 4m, 4y are arranged with spacings corresponding to the pitch of color ink parts of the ink sheet 1, and intermediate transfer bodies 5c, 5m, 5y are opposed respectively to the heads. Recording parts, each of which is constituted of the head and the intermediate transfer body, are provided on the intermediate transfer bodies so that adjacent ones of transferring parts (each of which is constituted of the intermediate transfer body and a heated roller 8c, 8m, 8y for transfer) are spaced from each other by the difference in the distance from the recording part (head position) to the transferring part. Namely, the difference in said distance is x=x2-x1 for the intermediate transfer bodies 5y and 5m, and this difference is equal to the spacing (y) between the transferring parts (a) and (b).

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a digital color recording device, and can also be used in color video printers and digital color copying machines.

[Prior Art] Recently, various methods for recording color images on recording paper using digital image signals have been proposed and are used in Nasital color copying machines, video printers, and the like. Currently, these devices record on the recording paper L multiple times for each color, so it takes 23 to 4 times longer than IL color recording, and it takes 23 to 4 times longer than IL color recording.

As a countermeasure, attempts have been made to record each color in parallel, but since it is not possible to write multiple colors at the same position on the recording paper at 111, the signals of each color are output by shifting the signals in time. Then, synchronization is performed with "Record" 2. But in this case.

It is necessary to read out the image information of a different part of the image for each color, which increases the amount of memory information and causes a problem in terms of cost. In other words, the conventional method of outputting a signal with a time lag for each color requires at least a large-capacity memory to store images of areas corresponding to the time lag of each color.

OBJECTIVE OF THE INVENTION The present invention aims to improve the conventional drawbacks as described above and to provide a recording device that is capable of printing in multiple colors at high speed and at low cost.

[Structure] The present invention provides a color printer having an ink sheet coated with the number of colors to be recorded and a recording head corresponding to the color, in which an intermediate transfer body is provided corresponding to each color of ink and recording head. , by making the distance between the recording position of the recording head on the intermediate transfer body and the transfer position on the transfer paper different for each color so that each color is transferred to the same position on the transfer paper, the colors are mechanically synchronized. While taking
This is intended to solve the problems of conventional devices by allowing parallel processing of each color.

Example The present invention will be explained according to the embodiments shown on pages 1 and 11.

1'4 shows an embodiment of the recording apparatus according to the present invention, in which FIG. 1 is a schematic side view showing the overall configuration, FIG.
FIG. 3 is an explanatory diagram showing a part of FIG. 1, respectively.

The recording device shown in Fig. 1 has three colors (yellow, macenta,
First of all, it shows a thermal transfer type digital copying machine that uses Cyanra's heat-melting type Inksee 1-1.

Image information from an image reading device such as a COD passes through a signal processing circuit to become a color signal for each color, is stored in a line memory for each color, and is used for recording.

That is, a heat-melting ink sheet (see FIG. 3) in which three color inks LY (yellow), 1M (macenta), and LC (cyan) are arranged side by side is transferred from the delivery tram 2 to the take-up tram 3. In between, thermal heads 4c, 4m, and 4y are arranged at intervals corresponding to the intervals between the respective colors of ink sheet 1-1, and intermediate transfer bodies 5c, 4y are arranged to face each thermal head. Of these intermediate transfer bodies, the intermediate transfer body 5C is hung between the rolls 6 and 6', and the intermediate transfer body 5111 is stretched between the rolls 7 and 7'. 5y itself is a roll.Furthermore, transfer heat rollers 8e, 8m, and 8y are provided, respectively, facing the rolls 6', 7'-5y located away from each heat head. The transfer paper 9 is conveyed between the roller and the intermediate transfer body.

To explain further, each recording section formed by the thermal heads 4c, 4m, 4y and the intermediate transfer bodies 5e, 5m, 5y is
As shown in FIG. 2, the transfer area for each color is formed by the intermediate transfer bodies 5c, 501.5y and the transfer heat rollers 8c, 8m, 8y, and the recording area and the transfer area are each thermal head position. The intermediate transfer members 5y and 5m are provided on the intermediate transfer member 1') so that there is a distance of χ, which is the difference between χ2 and χ1, and this is the distance between the intermediate transfer members 5y and 5m. It is set equal to the distance y between the transfer portions a and 13 onto paper.

The same setting is made between the intermediate transfer bodies 5I[1 and 5c. Therefore, image information regarding the same line is recorded in synchronization on the transfer paper 91.

In addition, the ink sheet 1 is the normal yellow + Y), macenta (M), and cyan (C):
It's often a simple book with just one mechanism.

In this case, the distance between each head is set to the width necessary for printing each color, but of course, by creating a speed difference between the ink sheet and the transfer paper (feeding the ink sheet slowly), the actual 111 You can make it smaller than medium.

In addition, as shown in Fig. 3, by providing a screen to switch the relationship between each color signal and the head before or after the line memory, the first sheet is printed on the thermal head 4y in yellow ( Y), macenter (M) to the thermal head 4m, cyan tC) to the thermal head 4C, and the next first sheet is macenter.

Cyan, then yellow, then cyan, then yellow.

For macenter printing, the same ink sheet can be used three times and the printing can be carried out continuously to print 1. .

The present invention is applicable not only to the thermal transfer process using the thermal head shown here, but also to a method using the ink sheet 1, such as a process using a known current-carrying head and an ink sheet for current-carrying transfer.

As the intermediate transfer body in the actual row, a fluorine-based resin film, a polyester film, etc. can be used, and a silicon roller with a built-in heater can be used as the heat roller for transfer. It is good to be able to heat the ink to a temperature higher than its melting temperature.

[Effects] According to the present invention, three thermal heads can be used with one ink sheet, and the apparatus can be downsized and simplified to a size of 111 as a high-speed printer.

In addition, since the signals can be processed in parallel, they can be processed using only the line memory for each color, reducing cost.Furthermore, the signals to each color thermal head can be switched in the order in which each color is arranged on the ink sheet. By switching to , it is possible to print continuously without having to move Inksey I~ again.

[Brief explanation of drawings]

The drawings show an embodiment of a recording apparatus according to the present invention, and FIG. 1 is a schematic side view showing the overall configuration. Figures 2 and 3 are explanatory diagrams showing a part of Figure 1, respectively;
It is. l... Ink sheet, 2... Delivery tram, :3
... Winding drum, 4e, 4m, 4 y... Thermal head, 5c, 5
11.5y''' intermediate transfer body. [4,6', 7.7''...Roll, 8c, 8111.8y...Heat roller for transfer. 9...Transfer paper.

Claims (3)

[Claims] (1) In a color printer that has an ink sheet coated with the number of colors to be recorded and a recording head corresponding to the color, an intermediate transfer body corresponding to each color of ink and recording head is provided, and the intermediate transfer 1. A recording device characterized in that the distance between the recording position of a recording head on a body and the transfer position on transfer paper is made different for each color so that each color is transferred to the same position on the transfer paper. (2) The recording apparatus according to claim 1, wherein the feeding speed of the ink sheet is lower than the feeding speed of the transfer paper. (3) The recording apparatus according to claim 1, further comprising a switch for switching the color signal for each print head for each printing in accordance with the arrangement order of each color on the ink sheet.