JPH04147867A - Method of controlling thermal transfer type recording apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention [Field of Industrial Application] The present invention relates to a method for controlling a thermal transfer recording device that transfers ink (dye) from an ink sheet to an image receiving sheet using heat from a thermal head, and particularly relates to a method for controlling a thermal transfer recording device that transfers ink (dye) from an ink sheet to an image receiving sheet using heat from a thermal head. This invention relates to a control method that is characteristic for removing slack.

[Conventional technology]

FIG. 2 shows the configuration of a general thermal transfer recording device.

In the figure, 1 is an ink sheet supply roll, 2 is an ink sheet, 3 is an ink sheet take-up roll, 4 is a drum-shaped platen, 5 is an image receiving sheet, 6 is a thermal head, and 7 is a pressure spring.

The image receiving sheet 5 is held between the ink sheet 2 and the platen 4, and is held on the platen 4 by the tension between the ink sheet supply roll 1 and the ink sheet take-up roll 3 without the need for a holding mechanism. Image data from the thermal head 6 is transferred to the image receiving sheet 6 via the ink sheet 2 by driving the ink sheet supply roll 1, the ink sheet take-up roll 3, and the platen 4.

[Problem to be solved by the invention]

In such an apparatus, after the recording (printing) operation, only the platen 4 is driven to print on the image receiving sheet 5 in order to record other colors.
If you try to put it back, the ink sheet 2 will become loose. When the ink sheet 2 becomes loose, the holding function of the image receiving sheet 5 by the platen 4 and the ink sheet 2 deteriorates, and the loosening of the ink sheet 2 causes wrinkles in the image. .

SUMMARY OF THE INVENTION An object of the present invention is to provide a method of controlling a thermal transfer type recording apparatus that can suppress loosening of an ink sheet during movement other than the original recording operation, such as an operation of returning the image receiving sheet.

[Means to solve the problem]

The above purpose is to transfer the ink sheet and the image receiving sheet to the image receiving sheet in accordance with the image information pattern from the thermal head by pressing the ink sheet and the image receiving sheet between the thermal head and the platen while conveying them in relatively opposite directions. In a method of controlling a thermal transfer recording apparatus that performs image recording, the present invention is achieved by a first means in which an ink sheet take-up roll is rotated in the forward direction when the image receiving sheet moves in a manner other than a recording operation.

In addition, the above purpose is to convey the ink sheet and the image-receiving sheet in relatively opposite directions while sandwiching them between the thermal head and the platen and applying pressure, thereby transferring the ink to the image-receiving sheet in accordance with the image information pattern from the thermal head. In a method for controlling a thermal transfer recording apparatus that performs image recording, this is achieved by a second means in which the ink sheet supply roll is rotated in the opposite direction when the image receiving sheet is moved in a manner other than the recording operation.

Furthermore, the above purpose is to transport the ink sheet and the image-receiving sheet in relatively opposite directions while sandwiching them between the thermal head and the platen and applying pressure, thereby transferring the ink to the image-receiving sheet in accordance with the image information pattern from the thermal head. In a method for controlling a thermal transfer recording device that records an image using a recording medium, the ink sheet take-up roll is rotated in the forward direction and the ink sheet supply roll is rotated in the reverse direction when the image receiving sheet moves in a manner other than recording operation. This is achieved by the third means.

[Effect]

According to the first means, the ink sheet take-up roll is rotated in the forward direction, that is, in the same direction as the image-receiving sheet moves during the recording operation, and according to the second means, the ink sheet supply roll is rotated when the image-receiving sheet is moved. According to the third means, one recording operation is performed by rotating both the ink sheet take-up roll and the ink sheet supply roll in the above-mentioned direction. This eliminates the slack in the ink sheet that occurs when the platen is reversed to return the image-receiving sheet when printing is completed and the next printing is performed in another color.

〔Example〕

Embodiments of the present invention will be described below based on the drawings.

FIG. 1 is a flowchart showing the details of a control method according to an embodiment of the present invention.

First, the image receiving sheet 5 is fed (Sl), and by driving the ink sheet supply roll 1, ink sheet take-up roll 3, and platen 4, the image pattern from the thermal head 6 is received via the ink sheet 2. The image is printed on the sheet 5 (S2). Here, if another color (next color) is not to be recorded (N in S3), the image receiving sheet 5 is ejected (S
4).

However, if recording in another color is to be performed (Y in S3), the platen 4 is reversed to return the image-receiving sheet 5, and the leading edge of the image-receiving sheet 5 is returned to the recording start position (S5). Next, the pressure is released by the thermal head 6 (S6), the ink sheet take-up roll 3 is rotated in the forward direction, and the ink sheet 2 is
At the same time, the ink sheet supply roll 1 is rotated in the opposite direction to wind up the ink sheet 2 to take up the slack (S8). Then, the process returns to before step S2 and the next color is recorded.

In this way, after the pressure on the thermal head 6 is released, the ink sheet supply roll 1 and the ink sheet take-up roll 3 are simultaneously wound up to shorten the operation time and take up the slack in the ink sheet 2. Of course, it is also possible to take up the slack in the ink sheet 2 by rotating either the ink sheet supply roll I or the ink sheet take-up roll 3.

〔Effect of the invention〕

As described above, according to the invention set forth in claim 1, the ink sheet take-up roll is rotated in the forward direction, that is, in the same direction as the movement of the image-receiving sheet during the recording operation;
According to the invention described above, the ink sheet supply roll is rotated in a direction opposite to the movement of the image receiving sheet during the recording operation, and further according to the invention described in claim 3, the ink sheet take-up roll and the ink sheet supply roll are rotated. By rotating both in the above-mentioned direction, it is possible to eliminate the slack in the ink sheet that occurs when the platen is reversed to return the image-receiving sheet when one recording operation is completed and the next recording of a different color is to be performed. can.

[Brief explanation of the drawing]

FIG. 1 is a control flowchart according to an embodiment of the present invention;
FIG. 2 is a configuration diagram of a thermal transfer type recording apparatus to which the present invention is applied. DESCRIPTION OF SYMBOLS 1... Ink sheet supply roll, 2... Ink sheet, 3... Ink sheet take-up roll, 4... Platen, 5... Image receiving sheet, 6... Thermal head. Figure Figure

Claims (3)

[Claims] (1) While conveying the ink sheet and the image-receiving sheet in relatively opposite directions, they are sandwiched between the thermal head and the platen and pressurized, and the ink is transferred to the image-receiving sheet in accordance with the image information pattern from the thermal head to form an image. A method for controlling a thermal transfer recording apparatus that performs recording, wherein an ink sheet take-up roll is rotated in a forward direction when an image receiving sheet moves in a manner other than a recording operation. (2) While conveying the ink sheet and the image-receiving sheet in relatively opposite directions, they are sandwiched between the thermal head and the platen and pressurized, and the ink is transferred to the image-receiving sheet in accordance with the image information pattern from the thermal head to form an image. A method for controlling a thermal transfer recording apparatus that performs recording, wherein an ink sheet supply roll is rotated in the opposite direction when an image receiving sheet moves in a manner other than a recording operation. (3) While conveying the ink sheet and the image receiving sheet in relatively opposite directions, they are sandwiched between the thermal head and the platen and pressurized, and the ink is transferred to the image receiving sheet in accordance with the image information pattern from the thermal head to form an image. In a method for controlling a thermal transfer recording device that performs recording, an ink sheet take-up roll is rotated in a forward direction and an ink sheet supply roll is rotated in a reverse direction when an image receiving sheet is moved in a manner other than a recording operation. A method of controlling a thermal transfer recording device.