JPS60198276A - Transfer-type thermal recorder - Google Patents

Abstract

PURPOSE:To prevent an ink doner film from being damaged when being fitted or detached, by setting the ink doner film into a sagless state by an ink doner film sag-removing mechanism when releasing a base part inclusive of a thermal head. CONSTITUTION:When the base part 5 is released and the thermal head 6 and a driving roller 7 are separated respectively from a back-up roller 2 and a pinch roller 3 with a predetermined spacing therebetween, a take-up knob 12 for the ink doner film 1 is rotated in the direction of an arrow C to take up the film 1. After the sag of the ink doner film 1 is removed, the film can be detached or fitted easily and safely together with a cassette 11.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a transfer-type thermal recording device having a recording section having an ink donor film interposed between a thermal head and a pack roller, and particularly relates to The present invention relates to an improvement for preventing damage caused by attaching and detaching a donor film and increasing operability for attaching and detaching the donor film.

[Prior art]

Generally, recording paper is superimposed on an ink donor film (hereinafter referred to as single IDF) and is transported between a fixedly arranged pack roller and a thermal head that is pressed against the pack roller with a predetermined pressure. By selectively causing the heating element of the thermal head to generate heat according to the image information, and transferring the ink of the IDF to the recording paper at the heat generating location, it is possible to generate a new image. 4;
--Mu 14''-Shimafu Blood Nikuokoro I, #4
As described above, the thermal head is pressed into contact with the pack roller, and a sufficient amount of water is removed from the pack roller in order to attach and detach the IDF interposed between the pack roller and the thermal head. A release mechanism is provided for the pack roller and the thermal head, which can maintain the pack roller and the thermal head in a separated state with a gap between them.

1 and 2 are side views showing a schematic configuration of a conventional transfer type thermal recording device having the above configuration. In particular, FIG. 1 shows the former state of the release mechanism described above, and FIG. The latter state is shown respectively. That is, in FIG. 1, the IDF 1, which is wound around a supply roller and a take-up roller (not shown), is attached to a pace section 5 along with guide rollers 4a and 4b with respect to a pack roller 2 and a pinch roller 3, which are fixedly disposed on the main body of the apparatus. The thermal head 6 and drive roller 7, which are integrally arranged in the apparatus, are brought into pressure contact with each other by rotation in the direction of arrow A about the release shaft 8 of the pace part 5, and the apparatus is brought into a state in which recording is possible. It is installed. Further, in FIG. 2, contrary to FIG. 1, the pace section 5 is moved 171J in the direction of arrow B, and the thermal head 6 and drive roller 7 are moved from the pack roller 2 and pinch roller 4 to the IDF 1. This figure shows the state when the IDF is removed so that there is sufficient clearance for replacement.
1 is attached and detached.

In addition, 4Q and 4d in FIGS. 1 and 2 are the above-mentioned I
DF 1 is an idler roller, which is installed in the main body of the apparatus. According to such a conventional transfer type thermal recording device, when the pace unit 5 is released as shown in FIG. pace board 5
As the guide rollers 4c to 4d are released, the guide rollers 4c to 4d become slack as shown by the solid line in the figure, and when the IDF 1 is removed, it is easy to scratch surrounding parts, resulting in damage. In order to avoid this, which is highly dangerous, it is necessary to tension the IDF 1 without any slack as shown by the dotted line in the figure, resulting in operational inconvenience.

[Purpose of the invention]

The present invention has been made in view of the above-mentioned circumstances.
It is an object of the present invention to provide a transfer type thermosensitive recording device that is equipped with an IJ-space mechanism that can prevent damage to the IDF when attaching and detaching the IDF, and can improve the operability of the attaching and detaching mechanism.

[Structure of the invention]

Therefore, in the present invention, an IDF slack-removal mechanism is provided which automatically brings the IDF into a state without slack when the pace section including the thermal head is released, either manually or automatically according to the release of the pace section. Sometimes, the above-mentioned purpose is achieved by keeping the IDF always in a tensioned state so that it can be attached and detached.

〔Example〕

Embodiments of the present invention will be described in detail below based on the accompanying drawings. FIG. 3 and FIG. 4 are conceptual diagrams showing an example of the structure of a transfer type thermal recording device according to the present invention, respectively, distinguishing between non-IJ, IJ-succeeding and release times. A symbol is attached. First, in FIG. 3 showing the non-release state, the IDF 1 used in the device of the present invention is an IDF cassette 11 in which the supply roller 9, take-up roller 10, and guide rollers 4e and 4d of the IDF 1 are integrally formed and arranged. is housed in. Then, the IDF take-up roller 10 in the IDF cassette 11 is manually inserted.
An IDF winding knob 12 is connected thereto, which can be rotated in multiple directions. Because of this configuration, when the pace section 5 is released and the thermal head 6 and drive roller 7 are separated from the pack roller 2 and pinch roller 3 with a predetermined gap as shown in FIG.
By manually winding up the IDF 1 by turning the F winding knob 12 in the direction of arrow C, the slack of the IDF 1 can be taken up, and in this state the IDF 1 can be easily and It can be safely taken out or put on. FIG. 5 is a perspective view of another embodiment of the present invention, showing an example in which the IDF 1 is dynamically rolled up by -1 at the same time as the pace part 5 is released.

The slack-taking mechanism of the IDF 1 shown in FIG. The drive gear 15 is connected to a rotation shaft 17 of a winding row 210 rotated by the pace section 5 and the motor 16 shown in FIGS. 3 and 4, respectively. According to the IDF slack-removal mechanism having such a configuration, when the pace section 5 is not released, for example, when recording, the arm 13 is not engaged with the pinion gear 14 (above the pinion gear 14'), and therefore recording is not possible. The rotation of the rotating shaft 17 of the take-up roller 10 for winding up or conveying the IDF 1 is performed in accordance with the rotation of the motor 16. Next, when this recording is completed and the pace unit 5 is released, for example to replace the IDF 1, the arm 13 is rotated in the direction of the arrow.

During this rotation, the tooth groove of the arm 13 is engaged with the pinion gear 14, so that, as the arm 130 rotates, the pinion gear 14, the drive gear 15 fitted to the pinion gear 14, and the drive gear The rotating shaft of the take-up sheet roller 10 connected to the winding roller 15 is rotated. Therefore, if the positions and gear ratios of these gears are appropriately selected, the arm can be hoisted to take up the slack of the IDF 1 at the same time as the pace part 5 is released, without requiring any special work by the operator. This can be done automatically in accordance with the 130 rotation, and it is possible to improve not only the safety when attaching and detaching the IDF 1 as described above but also the operability. Similarly, such an IDF slack-taking mechanism may be configured to take up the slack of the IDF 1 by, for example, moving the guide roller 4c in an appropriate direction in conjunction with the release of the pace section 5. - Also, the ID is automatically set at the same time as the pace unit 5 is released.
As another embodiment for winding up and tensioning the IDF 1, a switch is provided which operates simultaneously with the release of the pace section 5. When the switch is activated, the motor 16 is driven to prevent the IDF 1 from being attached or detached. There is also a method of winding up a predetermined amount to adjust the tension so that it is not taut. Furthermore, the IDFI has a mechanism for taking up slack in various IDFIs as described above.
The ICF 1 is damaged by interlocking with the holding mechanism of the IDF 1 or the IDF cassette 11 so that the IDF 1 or the IDF cassette 11 cannot be removed unless the slack removal of the IDF 1 is completed. Danger can be avoided with certainty.

〔Effect of the invention〕

As explained above, according to the transfer type thermal recording device of the present invention, when the pace section including the thermal head is released, the IDF is brought into a state without slack, either manually or in conjunction with the release operation of the pace section. Since the IDF slack removal mechanism is provided, the IDF when the pace section is released is
The slack removal process can be simplified or automated, and the operation of attaching and detaching the IDF can be simplified or automated. 2 ffl 7 >
I-J,? n! ? +-L J lz -1 to the song 'rrtt;'+M This has the excellent effect of avoiding the risk of damage, etc., and dramatically improving safety.

[Brief explanation of drawings]

1 and 2 are conceptual side views showing the configuration of a conventional transfer-type thermal recording device when the thermal head is in a non-IJ 17 state and when it is released. FIGS. A conceptual side view showing the configuration of such a transfer type thermal recording device when the thermal head is not released and when the thermal head is released, FIG. 5 is an IDF in another embodiment of the present invention.
It is a perspective view showing a part of composition of a winding mechanism. DESCRIPTION OF SYMBOLS 1... Ink donor film (IDF), 2... Pack roller, 3... Pinch roller, 4... Guide roller, 5... Pace part, 6... Thermal head, 7
...Drive roller, 8...Release shaft, 9
PA IDF supply i-roller, 10...IDF winding take-up roller 1...IDF cassette, 12...IDF-8 raising knob, 13...arm, 14...pinion gear,
15... Drive gear, 16... Motor, 17...
・IDF Winding roller rotating shaft. Figure 1 A Figure 2 Figure 3 Figure 4

Claims (3)

[Claims] (1) In a transfer-type thermal recording device that uses an ink donor film and a thermal head and performs recording by pressing the ink donor film onto the thermal head with a pack roller, the roller and the thermal head are separated. 1. A transfer type thermal recording apparatus comprising: a detachment mechanism for causing the ink donor film to loosen when the pack roller and the thermal head are detached from each other; (2) The transfer type thermal recording apparatus according to claim (1), wherein the slack removing mechanism comprises a manual winding ship disposed on a winding roller for the ink donor film. (3) The slack-taking mechanism has a tooth groove formed in a circumferential arm fixed to the detachment mechanism and a gear fixed to the detachment mechanism, which are fitted together in accordance with the detachment operation of the detachment mechanism. A transfer type thermal recording device according to claim (1), which is arranged at a position.