JPS60129284A - Transfer-type thermal recorder - Google Patents

Abstract

PURPOSE:To maintain a uniform recorded density, by a method wherein a recording paper condition restricting member for maintaining a recording paper in a flat condition and maintaining a constant releasing angle is provided in proximity to a releasing position of an ink doner film and the recording paper. CONSTITUTION:A stabilizing plate 7a is fixed in proximity to the releasing position on the back side of the recording paper 6, while pressing plates 7b, 7c are provided on the face side of the paper 6 substantially in parallel to the plate 7a, and are supported respectively by both ends of a spring 70 having a rotary shaft 40 as a fulcrum wherey the pressing force of the plates 7b, 7c is restricted. Accordingly, the releasing angle in releasing the paper 6 from the ink doner film 1 and the flatness of the paper 6 after releasing can be stabilized.

Description

[Detailed description of the invention]

[Industrial Application Field] The present invention relates to a transfer type thermal recording device, and particularly to a transfer type thermal recording device that improves printing quality by stabilizing separation between an ink donor film and a recording paper. [Prior Art] Fig. 1 is a side view showing a typical configuration example of an ink donor film and a recording paper conveyance system in a conventional transfer type thermal recording device. An ink donor film coated with a specific ink (
(hereinafter abbreviated as IDF) 1 is inserted into pressure contact between the thermal head 2 and the back roller 3, and between the drive roller 4 and the pinch roller 5, respectively, and is stretched between a supply roller and a take-up roller (not shown). . In such an apparatus, the recording paper 6 fed from the left side of the figure is placed on the thermal head 2 at the IDFI, ! : When supplied between the back rollers 3, rotational driving of the drive roller 4 is started, and conveyance of IDFI number n11 is started by this rotational driving. Then, on the thermal head 2, the recording paper 6 is also conveyed by the pressure contact force of the pack roller 3, following the conveyance of the IDFI, and at this time, the recording paper 6 is melted at a predetermined heat generating portion of the thermal head 2. 10 FI of ink is transferred and predetermined image information is recorded. Thereafter, the IDFI and the recording paper 6 are conveyed in a superimposed state to a peeling position on the circumferential surface of the drive roller 40 shown by arrow A, and from the peeling position, one is moved by a winding roller (not shown). The sheet is rolled up and conveyed in the direction of the arrow L, and the sheet is peeled off by being conveyed in the direction of the arrow P along a sheet discharge guide (not shown), and the sheet is discharged onto a sheet discharge tray (not shown). However, according to the above-mentioned conventional transfer type thermal recording device, the IDFI and the recording paper 6 are separated only by conveying them in different directions. The peeling angle and the state of the paper surface after peeling easily vary depending on the stiffness of the recording paper 6 or the adhesion strength of the molten ink of the IDFI, etc., making the peeling unstable, resulting in a decrease in recording density or unevenness. This has the disadvantage that printing quality is extremely degraded. [Object of the Invention] The present invention has been made in view of the above-mentioned circumstances, and it is possible to prevent a decrease in recording density by stabilizing the peeling angle of the recording paper from the IDF and the flatness of the recording paper after peeling. It is an object of the present invention to provide a transfer type thermal recording device that is free from unevenness and can obtain images with good print quality. [Structure of the Invention] Therefore, in the present invention, a flat plate is provided on the back side of the recording paper in the vicinity of the peeling position and is fixed to the extent that it lightly touches the recording paper, and a surface of the recording paper is arranged opposite to the flat plate. At least two discs disposed on the side and slidably sandwich the recording paper between the recording paper and the flat plate before and after the peeling position.
a presser plate, and a spring that applies an appropriate force to the presser plate to press the recording paper,
In the vicinity of the peeling position, the recording paper is conveyed while being kept in a flat state, and 61

[The printing quality is improved as described above by performing peeling Ii+h while maintaining a constant peeling angle from the IDF. 〔Example〕

Embodiments of the present invention will be described in detail below with reference to the accompanying drawings. FIG. 2 is a top view showing the components near the peeling position in the transfer type thermal recording device of the present invention.
After recording is made in a thermal transfer recording section (not shown) at a position t indicated by arrow A on the circumferential surface of the live roller 4,
IDFI and recording paper 6 supplied in an overlapping state
There is a separation level of 1 Ft. Then, the back side f1 of the recording paper 6 near this peeling position
, the peeling position A on the circumferential surface of the drive roller 40
A stabilizer (gray) 7a made of a flat plate fixed to the recording paper 6 so as to be in light contact with the recording paper 6 is disposed substantially parallel to the tangent line. Further, on the surface side of the recording paper 60 facing the stabilizer grate 7a,
611 Before and after the peeling position A, presser feet (gray) 7b and 7C that slidably clamp the recording paper 6 between the stabilizer plate (gray) 7a and the stabilizer plate (gray 1)
The stabilizer grating 7a is arranged substantially parallel to and close to the stabilizer grating 7a. As the presser plates 7b and 7C, flat plates are used similarly to the stabilizer plate 7, and furthermore, these presser plates 7b and 7C have rings forming the center fitted into the rotating shaft 40 of the drive roller 4, and It is supported at both ends of a spring 70 that has the rotating shaft 40 as a fulcrum. Here, the spring 70 is the presser gray) 7
This is provided to regulate the pressing force of the stabilizer plates 7a and 7c on the stabilizer plate 7a, and when the presser plates 7b and 7C are pressed against the stabilizer plate 7aLI with more pressure than necessary, both of them are It is necessary to apply an appropriate force to the stabilizer plate 7a to press down the holding plates 1-7b and 7C in advance so as not to interfere with the conveyance of the IDFI and the recording paper 6 being conveyed between the stabilizer plate 7a. be. Furthermore, the fitting of the center ring of the spring 70 into the rotating shaft 40 of the drive roller 4 and the connection of the presser grates 7b and 7c to the spring 70 are not in a completely solid state. It is arranged with a degree of freedom for rotational movement around the connection position. Recording paper condition regulating member 7 having such a configuration
According to the transfer type thermal recording device 16' equipped with the above, the recording paper 6, which is conveyed between the stabilizer plate 7a and the presser plate 7b in a superimposed state on the IDF after thermal transfer recording, is shown by arrow A. Immediately after being peeled off from the IDFI, which is conveyed in the direction of the arrow along the circumferential surface of the drive roller 4 from the peeling position, the IDFI is supplied between the stabilizer gray 7a and the presser root 7c, and the IDFI
Following the conveyance of the FI, the vortex is conveyed along the stabilizer plate 7a, and the paper is discharged to a paper discharge tray (not shown). In this way, the recording paper 6 is conveyed in a substantially flat state in the vicinity of the peeling position, and is peeled off from the IDFI while the peeling angle is also kept constant, so that the peeling is stable and the recording density is increased. It is possible to minimize the decrease in color and unevenness, and to obtain recorded images of good quality. Further, FIG. 3 shows another embodiment of the present invention, in which a recording paper condition regulator 1b constructed as shown in FIG.
Further, a paper ejecting roller 8 consisting of a pair of rollers 8A and 8B which are rotatably pressed against each other is added on the path through which the recording paper 60 after peeling of the transfer type thermal recording device equipped with the side 7 of the transfer type 4'i is provided.
l! It was completed. Therefore, the recording paper condition standard f
The recording paper 6 that has been peeled off by passing through the TFL1 member 7 is pulled out from the peeling position with a certain amount of tension applied to the paper ejection roller 8, and is ejected. The conveyance state and peeling angle of the recording paper can be further stabilized, and thereby a significant improvement in printing quality can be expected. [Effects of the Invention] As explained above, the transfer type thermal recording device (ε-
According to
Since the recording paper condition regulation jjll f5L paulownia is provided to keep the recording paper in a flat state and maintain its peeling angle constant, the recording paper is always peeled off while keeping it flat and with a constant peeling angle. As a result, it is possible to prevent a decrease in recording density, unevenness, etc. caused by unstable peeling as in the past, and it has the excellent effect of contributing to improving print quality.

[Brief explanation of the drawing]

FIG. 1 is a side view showing a general configuration example of an IDF and a recording paper conveyance system in a conventional transfer type thermal recording device, and FIG. 2 shows a configuration near the peeling position in a transfer type thermal recording device according to the present invention. 3 is a side view showing an example of the configuration of a conveyance system in an apparatus according to another embodiment of the present invention. ]... Ink donor film (IDF), 2... Thermal head, 3... Back roller, 4... Drive roller, 5... Pinch roller, 6... Recording paper,
7... Recording paper condition regulating member, 7a... Stabilizer play), 7b, 7c... Presser plate, 70...
・Spring, 8... Paper ejection roller.

Claims (1)

[Claims] a flat plate disposed on the back side of the recording paper in the vicinity of the peeling position and fixed to such an extent that it lightly contacts the recording paper; at least two presser plates that slidably sandwich the recording paper between the front and rear of the plate and the flat plate, and a suspension ring that applies an appropriate force to the presser plate to press the recording paper. . A transfer type thermal recording apparatus, characterized in that the recording paper near the peeling position is kept in a flat state and the peeling angle is maintained at a constant value.