JPS59146867A - Color recorder - Google Patents

Abstract

PURPOSE:To obtain the titled device which causes little shear of color and can be manufactured inexpensively, by a construction in which a retaining means for making a drum retain the end of image-receiving paper is opened and closed in linkage to an operation of moving a thermal head. CONSTITUTION:When a thermal head 13 is separated from a drum 16 by driving a sliding member 21', a projection 22 of the head is made to engage with a lever 25, and thereby a holder 19 is put in the open state through the intermediary of a lever 25. When image-receiving paper 15 is inserted and the sliding member 21' is moved to the left to disengage the projection 22 from the lever 25, a lever 24 is made to touch a projection 29 by a spring 28, the holder 19 is actuated in the direction of the center of the drum 16 by the actuating force of a spring 20, and thereby the end of the image-receiving paper 15 is made to contact closely with the drum 16.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a color recording apparatus that performs color recording by thermally transferring dyes on a thermal transfer paper onto a receiving paper using heat from a thermal head.

Conventional column configuration and its problems In recent years, the use of nice play devices such as CRTs (cathode ray tubes) that display color images has been increasing, and along with this, there is a demand for devices that can hard copy these color images. . In particular, there is a need for a device using color transfer paper that is easy to use and does not require troublesome maintenance.

A conventional color recording apparatus will be explained below. FIG.
is pressed against. Two auxiliary rollers 3 are pressed against the platen 2.

The transfer paper 6 is supplied from the supply reel to the take-up reel 6.
It is wound up. The transfer paper 5 has cyan, magenta, and yellow pigments sequentially applied to different sections.

The operation will be described below.

Transfer the first color transfer paper (for example, cyan) to the thermal head 1.
and the platen 2, the platen 2 is rotated in the direction of the arrow, and a recording signal is applied to the thermal head 1.

The heat generated by this thermal head 10 causes the dye on the transfer paper 6 to be transferred onto the image receiving paper 4. - When recording of one screen of colors is completed, the thermal head 1 leaves the platen 2 as shown in FIG. This situation is a lie, platen 2 is reversed,
Rotate in the direction of arrow B. At this time, the auxiliary roller 3 is in pressure contact with the platen 2. However, the receiver 1 image paper 4 is pressed against the platen 2, the receiver paper 4 also moves in the opposite direction, and the recording start position of the first color is set to the thermal head 20. During this time, the transfer paper 5 is transferred to the take-up reel. 6.
The second color stops at the heat generating position of the thermal head 1. When the above two stops are completed, the thermal head 1 is pressed against the platen 2 and enters the state shown in FIG. 1, and recording of the second color is performed.

Thereafter, when the recording of the third color is completed in the same manner, a color copy is obtained.

However, in the above configuration, 2
The image receiving paper 4 between the auxiliary rollers 3 of 11i1 tends to have walnuts. In this case, the recording start positions of the second and third colors become inaccurate on the image receiving paper 4, and color misregistration is likely to occur.
There were often defects that made it difficult to obtain clear color copies.

In order to improve this problem, there is a device, as shown in FIG. 3, in which image-receiving paper is cut to a predetermined length and recorded by winding it around a drum. In this arrangement f4, the thermal head 1 is held under pressure by the drum 10 via the transfer paper 5 and the image receiving paper 9. The drum 1Q is large enough to wrap the image receiving paper 9 in a single layer. The image-receiving paper 9 is held firmly against the surface of the drum 10 by a holder 11 provided on the drum 10-.
I'm stunned. The holder 11 is attached to the spring 12 on the drum 1.

The roller 13 is lightly pressed against the drum 10.

During recording, the holder 11 starts recording the first color at a point slightly past the heat generating position of the thermal head 1. The mechanism of transcription is similar to that shown in FIG. 1
When the recording of the color is completed, the thermal head 1 transfers to the drum 10.
The drum 10 rotates in the same direction, makes one revolution, and stops at the recording start position of the first color, and the transfer paper 5 rotates in the same direction.
The paper is wound up by the take-up reel 6 until "Color 1" appears. When the following operations are completed, the thermal head 1 is again pressed against the drum 1o and starts recording the second color. When the third color is recorded in the same manner, color copying is completed.

According to this method, the drum 1o rotates as shown by arrow C, and after the holder 11 has passed through all the rollers 130, the roller 13 brings the image receiving paper 9 into close contact with the drum 1o, so that the image receiving paper 9 It does not float off the surface of the drum 100.

Therefore, the position of the image receiving paper 9 can be accurately controlled, and color misregistration will not occur.

However, in this device, it is necessary to open and close the holder 11 each time the image receiving paper 9 is wound around the drum 1o or peeled off, and this requires active parts such as a solenoid and a motor, which increases the cost. have.

OBJECTS OF THE INVENTION The present invention solves the above-mentioned conventional drawbacks, and aims to provide an apparatus with less color shift and which can be manufactured at low cost.

Structure of the Invention The present invention attempts to achieve the above object by opening and closing a holding means for holding the leading edge of the image receiving paper on the drum in conjunction with the movement of the thermal head.

DESCRIPTION OF THE EMBODIMENTS FIGS. 4, 6, 7 and 8 show the main parts of a color recording apparatus in one embodiment of the present invention. In FIGS. 4, 6, 7, and 8, the thermal head 13 is the thermal transfer paper 14.

It is pressed against the drum 16 via the image receiving paper 15.

The image receiving paper 15 is cut in advance to be slightly shorter than the outer circumference of the drum 16. The thermal transfer paper 14 is supplied from a supply reel 17 and wound onto a take-up reel 18 . Receiving paper 15
The holder 19, which is a holding means, slides along the radial direction 416' provided on the drum 16, and one end 19'
extends along the surface of the drum 16. One end 19'
is pressed against the drum 16 via the image receiving paper 15, and the image receiving paper 15
The leading end of the drum is firmly held on the surface of the drum 16 to prevent slippage. The holder 19 is urged toward the center of the drum 16 by a spring 20. The thermal head 13 holds the thermal transfer paper 14° on the drum 16 via the spring 23 by the movement of the sliding member 21' which moves left and right by the rotation of the screw 21 which is a driving means. Pressed. Note that the sliding member 21' slides smoothly along the fixed base 21''.

The lever 24.25 is pivotally oriented in place of a pin 26.27 implanted on the yarn (not shown). The lever 24 is biased counterclockwise about a pin 26 by a spring 28 with respect to the chassis (not shown), and comes into contact with a stopper 29 on the shear. One end of the lever 24 has a protrusion 24', which can come into contact with a protrusion 19'' provided on the holder 19, but normally faces away from it with a slight interval.Lever 24 The lever 25 and the protrusion 25' provided on the thermal head 13 are in contact with each other.The lever 25 and the protrusion 22 provided on the thermal head 13 are in contact with each other.

The roller 30 presses the drum 16 lightly.

The thermal transfer paper 14 is cyan (Q) as shown in FIG.
, magenta (goods), yellow (power is applied sequentially in separate areas that become light.

I: The operation of the described embodiment will be explained next.

FIG. 6 shows the point in time when the receiving paper 16 is attached to the holder 19. The thermal head 13 is attached to the 21st part of the sliding part 1.
．． When the holder 19 is moved far away from the drum 16 by driving, the protrusion 22 and the lever 25 are engaged, and the levers 25 and 24 are rotated in conjunction with each other to bring the holder 19 into the open state as shown in the figure. Insert the image receiving paper 16 here, and in this state slide member 21
' to the left and bring the thermal head 13 closer to the position shown in FIG.
2 and the lever 25 are disengaged, the lever 24 comes into contact with the protrusion 29 by the spring 28, and the holder 19, which is no longer engaged with the protrusion 19'', is moved against the drum 16 by the force of the spring 20. The leading edge of the image-receiving paper 15 is brought into close contact with the drum 16 by being biased toward the center. Next, as shown in FIG. 19' and presses the image-receiving paper 16 sequentially from its tip, so that the image-receiving paper 15 is tightly wound onto the surface of the drum 160.The holder 19 is placed between the thermal head 13 and the drum 16. passing by,
When reaching the recording start point, as shown in FIG. 8, the thermal head 13 is brought into contact with the drum 16 by the leftward movement of the sliding member 21', and the spring 23 applies a full predetermined pressing force. From here, recording of the first color begins, and continues through the state shown in FIG. 4 until the end of recording. During this time, heat transfer paper 1
4 is lightly wound up by the take-up reel 18, and the receiving paper 1
Moves at a speed of 5. When the recording of the first color is completed in this way, the thermal head 13 retreats again to the position shown in FIG. The thermal head 13 is wound on the take-up reel 18 until the next color appears, and the thermal head 13 is moved onto the drum 16 at the recording start point of the drum 16.
It is pressed onto the surface and recording of the second color begins. Thereafter, the third color is recorded in the same manner to complete one color copy.

10. When copying is completed, the state shown in Figure 6 will appear, and holder 1 will be
9 separates from the drum 16, and in this state the receiving paper 15
Take out.

In this embodiment, a method using a screw was used to drive the thermal head, but it is not limited to a screw, and it goes without saying that a method using a single collar or the like may also be used. Further, in this embodiment, the thermal head and the holder are interlocked using two levers, but it goes without saying that this can also be done using other methods such as a cam.

Effects of the Invention As is clear from the above two examples, according to the present invention, since the image receiving paper is brought into close contact with the drum, it is possible to realize color copying without color shift, and the operation of holding and releasing the image receiving paper can be realized. Since the thermal head is moved using a power source, a dedicated power source is not required, and a low-cost color recording device can be provided.

[Brief explanation of drawings]

FIG. 1 is a side view of the main parts of a conventional color recording device, FIG. 2 is a side view of the main parts of another color recording device, FIG. 3 is a side view of the same main parts, and FIG. 4 is a side view of the main parts of another color recording device. FIG. 6 is a side view of essential parts of a color recording device in one embodiment, and FIG. 6 is a plan view of thermal transfer paper.
7 and 8 are side views of the same essential parts in different states, respectively. 13-・Thermal Henode, 14-Thermal transfer paper, 15...
・Receiving paper, 16-- Drum, 19 ・Holder, 24
．． 25 - Lever. Name of agent: Patent attorney Toshio Nakao and 1 other person No. 1
Figure 3 Figure 4 Figure 5 Figure 4 Figure 6

Claims (1)

[Claims] A drum on which image-receiving paper is wound, a thermal head that presses the image-receiving paper on the drum through a thermal transfer paper to sequentially thermally transfer the dye on the thermal transfer paper onto the image-receiving paper, and a thermal head provided on the drum. , a paper holding means for holding the leading end of the receiving paper, a thermal head moving means for moving the thermal head toward and away from the drum, and a driving force of the thermal head moving means is applied to the paper holding means. A color recording device equipped with a transmission means for guiding.