JPS58134760A - Transfer type heat-sensitive recorder - Google Patents

Abstract

PURPOSE:To obtain a transfer type heat-sensitive recorder capable of eliminating the waving deformation and crumpling of ink donor sheets by a method in which the thermal head is separated from a counter roll during the period from the ending of previous recording action to the beginning of the next recording action. CONSTITUTION:When recording to a recording paper 7 is ended, a motor 21 is actuated, a cam 19 is turned by a belt 20, and the opposite side end 12b of a rotary plate 12 is clockwise turned against the force of a spring 18 and pressed downwards. When the rotary plate 12 is pushed down, the thermal head 4 is also separated from a counter roll 6 and brought down, and an ink donor sheet 2 portion is also opened and extended or shrunk as in the other parts.

Description

DETAILED DESCRIPTION OF THE INVENTION The apparatus uses an ink donor sheet unwound from a supply roll to perform I! This is a transfer-thermal roller device that performs cram transfer recording on sickle paper, and is a transfer device that eliminates the occurrence of wrinkles on the ink donor sheet due to mechanical causes and prevents this from degrading the raw image quality. Death Note -
It is related to the device.

Outline of conventionally and commonly used transcription m-brass equipment -
The top view is shown in the fail.

In 11, 1 is a supply rack for the ink donor sheet 2, 3 is a take-up roll for the ink donor sheet 2, 4 is a counter roll 6 for holding the ink donor sheet and the roll paper 7; A thermal head that selectively heats the ink donor sheet 8 and rolls it onto the printing paper 7, and a drive unit that comes into contact with the inner roll of the ink donor sheet 8 and conveys the ink donor sheet 7 and the roll m7. It is le.

In the conventional device as described above, the thermal head 4
The ink donor sheet 2 and the opposing roll 6 are designed to sandwich the ink donor sheet 2 and release the pressure even after the row operation is completed. For this reason, the ink donor sheet 2 at that position can be expanded and contracted in a constant manner. The portion of the ink donor sheet 20 between the
When it is humid, it may absorb moisture and expand and contract.

Therefore, this part becomes wavy, and when the ink donor sheet 2 starts to roll and then begins to roll, the wavy part of the ink donor sheet 2 is suppressed by the mill head and the opposing roll 6 and wrinkled. This had the disadvantage that the recording of that part would be omitted, resulting in a noticeable deterioration of the image quality.

It is an object of the present invention to eliminate the disadvantages mentioned in item 1III and to eliminate the occurrence of wrinkles in the ink donor sheet due to mechanical causes.
It is an object of the present invention to provide a heat-sensitive recording device with nine transfers that prevents this from deteriorating the recorded image quality.
1 In order to achieve the above-mentioned purpose, the present invention provides a record of 1111 times from the end of the production to the start of the next year's production.

The main feature is that the thermal head and the opposing roll are connected to each other.

Embodiments of the present invention will now be described with reference to the attached drawing F1. FIG. 2 is a schematic side view of an embodiment of the present invention. In the figure, the same reference numerals as in FIG. 1 represent the same parts.

Reference numeral 12 denotes a rotating plate, a part of which is fixed to the thermal head 4, and rotates around the ultimate fulcrum 121; 18, the rotating plate 12 is rotated in the counter-hour direction to -9 of the fulcrum 12m; This is a spring provided so as to move the thermal head 4 into pressure contact with the opposing roll 6.

In addition, 1G is the opposite end 1 of the support point 1.2m of the board 12.
112m5 with a cam which is provided to engage with
.

When recording using the transfer certificate thermal recording device configured as described above, when recording on the recording paper 7 is completed, the motor 21 is started and the belt 20 moves the cam 1'1.
・; □, 19 is rotated to -" the opposite end 12b of the rotating plate 12.
, against the spring force of the spring 1'□f'8 in the hour hand direction ゛1□.

Rotate it and push it down.

When the rotary plate 12 is pushed down, a part of it is fixed thereto, separated from the nine-kal head 44h and the mare 6, and lowered downward.

Ther-v) I/Head 4 is separated from the opposing roll 6, so that the thermal head 4 causes the opposing roll 6 to
The portion of the ink donor sheet 20 that is pressed is also released.

When restarting recording, the motor 21 is started again to rotate the cam 19 so that the spring force of the spring 18 restores the thermal head 4 to its original state. fK, ink donor seam with thermal head 4)2. S? Then, the ink donor sheet 2 is selectively heated by the thermal head 4 to perform recording on the ink paper.

According to the present invention, when recording is finished,
The portion of the ink donor sheet 20 that was once pressed against the opposing roll 6 by the thermal head 4 is released. therefore,
Even at high temperatures, the above-mentioned portion expands and contracts like other portions, and as a result, the ink donor sheet 2 does not become wavy or wrinkled. Low-quality does not deteriorate.

Note that in the above case, the same effect can be obtained even if the thermal head 4 is moved among the thermal head 4 and the opposing roll 6, but the opposing roll 6 is moved. Of course it can be done.

It is also obvious that the rotation 1 [12] may be rotated using the cam 190 or 9K, for example, a solenoid, or that the thermal head 4 or 9 may directly rotate the opposing roll 6.

In the present invention, as described above, the thermal head and the opposing roll are brought into direct contact from the end of the previous recording operation to the start of the next low operation, so that the ink donor sheet is not undulated or wrinkled. There is an advantage in eliminating this occurrence and preventing it from deteriorating the recorded image quality.

[Brief explanation of the drawing]

1A is a schematic lateral view of a conventional transfer roller heat-sensitive row apparatus, and FIG. 2 is a schematic side view of an embodiment of the present invention. 2... Ink donor sheet, 4... Nermal head, 6... Opposing roll, 7... Recording paper, 12... Rotating plate, 18... Spring, 19... Cam, 20... ...Bell), 21...Motor Daihohito Bengakishi Michihito Hiraki 1 master 1 figure 2 figures Yozai

Claims (1)

[Claims] (1) A transfer heat-sensitive roller having an opposing roll and a thermal head that suppresses the ink donor sheet and the ink donor sheet on the opposing roll, selectively heats the ink donor sheet, and applies the ink donor sheet to the ink donor sheet. In the device, from the end of the previous -〇 row operation to the next 1! A transfer heat-sensitive recording device comprising a means for connecting the thermal head and the m-distributed meat torsion to one operation-to-tsumugi time, and having nine things to do.