JPS5931170A - Thermal transfer multi-color recording apparatus - Google Patents

Abstract

PURPOSE:To make it possible to shorten a printing time, by a method wherein each color inks on a transfer ribbon are successively transferred to a transfer medium part having a peripheral length corresponding to the length of the printing area of paper to form a multicolor latent image which is, in turn, transferred to the paper in a batch. CONSTITUTION:When printing is started, a transfer roll 8 is upwardly moved to be contacted with a thermal head 1 under pressure through a transfer ribbon 2 and each heat generating element thereof is selectively heated by the supply of a current while a roll 8 is driven to successively transfer a magenta image due to magenta ink, a cyan image and an yellow image on the peripheral surface thereof in a superimposed state. In the next step, the transfer roll 8 is downwardly moved to be contacted with a heat generator 9 under pressure through paper 6 and the color latent image is transferred to the paper 6 in a batch by the heat generation over the entire surface thereof and the drivings of the paper and the roll 8. By this method, color printing can be performed without reversely returning the paper and a printing time can be shortened and inconvenience of color shift or the like can be removed.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a transfer 1 coated with a plurality of heat-melting inks.
The present invention relates to a thermal transfer multicolor recording device that performs color printing using Novon.

As is well known, a color CRT is a multicolor recording device that prints images on a screen, and prints by transferring each color ink on a transfer ribbon coated with multiple color inks onto paper using a thermal head. There is a thermal transfer multicolor recording device that performs this. FIG. 1 is a perspective view showing an example of such a thermal transfer multicolor recording device. In this figure, 1 is a thermal head, and a transfer ribbon 2 is stretched over this thermal head 1 in the following manner. That is, this transfer ribbon 2 is divided into sections in the length direction (this section length is the same as the printing length of the paper), and magenta ink, cyan ink, yellow ink, and magenta print are applied to each area obtained by this. --- are applied sequentially, and are supplied from the transfer ribbon roll 3, and transferred to the transfer ribbon winding roll 4.
It is designed to be wound up by. Further, a platen roller 5 is provided below the thermal head 1.
A paper 6 supplied from a paper roll 7 is stretched over the platen roller 5 . This paper 6 is printed with each ink on the transfer ribbon 2. In a thermal transfer multicolor recording device having such a configuration, during printing, the transfer ribbon 2 and the paper 6 are brought into close contact with each other by the thermal head 1 and the platen roller 5, and in this state, the thermal head 1 is heated with electricity, and the transfer The ribbon 2 and the paper 6 are driven, and the first color, for example, magenta, is transferred onto the paper 6. Next, the thermal head 1 and the platen 5 are separated, and only the paper 6 is returned to the position P-+i.Then, the thermal head 1 and the platen roller 5 bring the transfer ribbon 2 and the paper 6 into close contact again. At the same time, the next color ink, for example, cyan ink, is transferred onto the magenta image (transferred image of the magenta ink) on the paper 6,
At the fifth and third time when the second transfer is performed, the next color ink, yellow ink, is transferred onto the magenta/cyan mixed image on the paper 6, and color printing is completed. In this way, this thermal transfer multicolor recording device prints three colors overlappingly to obtain each color as shown in Fig. 2, whereas conventional thermal transfer of this type With multicolor recording devices, when printing, the paper is reversed to perform overlapping printing, so the printing time increases as the paper is moved back, and it is difficult to return the paper to the starting position accurately. There were inconveniences such as the occurrence of sharp color shifts.

In view of the above-mentioned points, the present invention provides a thermal transfer multicolor recording device that can perform overlapping printing by reversing long sheets of paper such as continuous paper. A transfer medium FjI (all of which has a PC) is provided, and each color ink on the transfer ribbon is sequentially transferred to this transfer medium to form a multicolor latent image, and then this multicolor latent image is transferred all at once to the paper. It is characterized by the fact that

An embodiment of the present invention will be explained below with reference to the drawings.

FIG. 3 is a perspective view showing an embodiment of the thermal transfer multicolor recording apparatus according to the present invention. In this figure, parts corresponding to those in FIG. 1 are given the same reference numerals. In this figure, 8 is a transfer roll (the length of the printing area of paper 6, which is the length of one page) and a circumference of the same length.
This transfer roll 8 is provided below the thermal head 1 so as to be vertically movable.

Further, a heating element 9 is provided below the transfer roll 8, and the paper 6 is stretched around the heating element 9.

Next, the operation of this embodiment based on the above tl will be explained. First, when printing is started, only the transfer roll 8 is moved upward, and this transfer roll 8 comes into pressure contact with the thermal head 1 via the transfer ribbon 2. Next, each heating element of the thermal head 1 is selectively energized and heated, and the transfer ribbon 2 and transfer roll 8 are driven, and the first color ink, for example, magenta ink, is transferred directly around the transfer roll 8. Next, these images are superimposed and transferred, and then a yellow image is superimposed and transferred on top of these magenta and cyan images.
A color latent image is formed on the transfer roll 8.

In this case, the color latent image formed on the transfer roll 8 can have different gradations by changing the printing pulses applied to the thermal head 1. Next, this transfer roll 8 is moved downward, and this transfer roll 8 is pressed against the heating element 9 with the paper 6 interposed therebetween. Thereafter, the heating element 9 generates heat over the entire surface, and the paper 6 and the transfer roll 8 are driven, and the color latent image on the transfer roll 8 is transferred to the paper 6 all at once.

In this way, in this thermal transfer multicolor recording device, transfer 1
The transfer roller 8t is driven in one direction, and during this driving period, the one-symbol head 1 is set to Sgi/4 to sequentially transfer each ink onto the transfer roller 8, thereby transferring the ink to the transfer roller 8. Since the colored latent image is transferred all at once to paper 6, paper 6
Color printing can be performed on the paper 6 without having to reverse the process.

FIG. 4 is a side view showing another embodiment of the thermal transfer multicolor recording apparatus according to the present invention. The apparatus shown in this figure differs from the apparatus shown in FIG. That's true. This difference will be further explained below. First, a transfer device (8a) has a whistle platen roller 5, a heating roller 11, and a long bag that is the same length as the printing area of the paper, and is stretched between the platen roller 5 and the heating roller 11. The endless film 12 is provided between the thermal head 1 and the second platen roller 10 so as to be movable up and down. Similarly, '!l: -)') Rasosuf 7-Strong structure 8a is moved upward.

After that, as soon as the thermal head 1 is driven, the transfer 1
1 bond 2〉 and entres film 12 are moved, and each color image is placed on this end 1 nos film 12:/
ri・h=Sequential overlapping transfer is performed. Next, the transfer mechanism 8a is moved downward and the heat generating roller 11 generates heat so that the color latent image on the endless film 12 is transferred to the paper 6.
The images are transferred all at once and printed on paper 6. In this way, the same effect as the embodiment shown in FIG. 13 can be obtained even if the first row of this embodiment is used.

As explained above, in the thermal transfer multicolor recording apparatus according to the present invention, the transfer medium f? has a circumferential length corresponding to the printing area length of the paper. [S is provided, and each color ink 'f (-) on the transfer medium is sequentially transferred to form a multicolor latent image, and then this multicolor latent image is transferred all at once to the paper. This allows overprinting to be performed without reversing the paper, thereby shortening the printing time, as well as ensuring accurate overprinting and reducing color misalignment. In addition, since continuous paper can be used, operability during printing can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing an example of a conventional thermal transfer multicolor recording device flit, FIG. 2 is a diagram for explaining the same as FIG. FIG. 4 is a perspective view showing an embodiment, and FIG. 4 is a side view showing another embodiment of the thermal transfer multicolor recording apparatus according to the present invention. 1...Thermal head, 2...Transfer ribbon, 6...Paper, 8...Transfer roll (transfer medium), 8a...・Transfer mechanism (transfer mediating part), 9...Heating element, 1
1... Heat generating roll.

Claims (1)

[Claims] In a thermal transfer multicolor recording device that performs printing by transferring the color ink on a transfer 11 formed by successively applying color inks of different colors to a paper using a thermal head, the printing process 11 of the paper is performed. A transfer medium 7f having a circumferential length corresponding to the transfer medium is used to sequentially transfer each color ink on the transfer ribbon to the transfer medium to form a multicolor latent image, and then transfer this multicolor latent image to the transfer medium. A thermal transfer multicolor recording device characterized in that it transfers images to paper all at once.