JPS5964369A - Thermal transfer recording apparatus - Google Patents

Abstract

PURPOSE:To facilitate the separation and contact of a thermal head and a platen to facilitate the exchange of an ink sheet, by mounting the thermal head, the platen, an ink sheet transfer system and a recording paper transfer system to a fixed side plate and a movable side plate in an plate and a movable side plate in an optimumly distributed state. CONSTITUTION:A support lever 50 is provided between a pair of fixed side plates 70 ans a pair of movable side plates 80 are provided to said support lever 50 as a fulcrum in a freely revolvable manner. A thermal head 1 and a thermal transfer ink sheet transfer systems 3-8 are provided between a pair of the fixed side plates 70 while recording paper tranfer system 10, 30, 40, a platen 2 and a paper feed cassette 31 are mounted between a pair of movable side plates 80. A press plate 32 for pressing a recording paper stack to the stacking direction thereof is provided to the paper feed cassette 31 and press means 34, 38 each for applying pressing force to the press plate 32 when the paper feed cassette 31 is mounted to a mounting body 30 and pressing force release means 60-61 are provided to the movable side plates 80.

Description

[Detailed Description of the Invention] Technical Field> The present invention involves inserting an ink sheet for thermal transfer and a recording paper in a superimposed manner between a thermal head and a platen that face each other, and adjusting the temperature according to the heating pattern of the thermal head. The present invention relates to a thermal transfer recording device that transfers and records ink from an ink sheet onto recording paper in a pattern.

<Background Art> In this type of apparatus, an ink sheet for thermal transfer is drawn from a roll-shaped sheet supply source, sent between a thermal head and a platen, and then wound onto a sheet winding body. When the remaining amount of the sheet supply source runs out, remove the remaining ink sheets from the ink sheet transport system, replace the sheet supply source with a new one, and then install the ink sheet transport system in the drawer. need to be set to .

In the 10,000-inch printer, the recording sheets are taken out one by one from a paper feed cassette containing stacks of recording sheets, and then transported through a gap between a thermal head and a platen. Usually, the paper feed cassette is equipped with a pressing plate 11 that presses the recording paper stack in the stacking direction to help pull out the recording paper from the paper feed cassette. A second pressing means is installed to press the pressing plate, and a mechanism for releasing the pressure of the pressing means when the paper feed cassette is attached or removed is also essential.

<Disclosure of the Invention> The present invention is intended to make it easy to replace the thermal transfer ink sheet in such a complicated configuration, and basically it is possible to separate it from the thermal head platen. So, is it possible to replace the thermal transfer ink sheet in a separated state? It is easy to provide a concrete structure.

Embodiment FIG. 1 shows a state in which a thermal head (1) and a platen (2) are in contact with each other. A constant ink sheet (6a) pulled out from the ink sheet roll (3) which is a supply source of the thermal transfer ink sheet, and a contact area between the r1 guide roller 1415 and the thermal head (1) and the rotatable platen (2). [After passing through the contact space between the first drive roller (6) and the suppression roller (7), the first guide roller (7)
The drive roller (6) is rotationally driven by a motor (9) via a transmission gear 7 (not shown), and is also rotated by a winding If crawl (8).
The number of windings is also received from the motor (9) via a belt (not shown). Therefore, when the motor (9) rotates, the ink sheet (3a) is drawn out from the vc equine sheet roll (3) by the feeding action of the first drive roller (6), and the number of turns is finally transferred to the take-up roll (8). It will be done.

A single sheet of recording paper inserted above the recording paper insertion path +101 is guided between the platen (2) and the ink sheet F (6a) in cooperation with the auxiliary guide plate (10b).

The guided recording paper passes between the platen 12) and the thermal head (1) as the ink sheet (3a) moves, and is then discharged upward via the discharge guide U.

The thermal head il+ is centered around the shaft (121), and the spring body
31 to rotate clockwise, and the platen (
2). Second, the ink sheet (6a) located between the platen (2) and the thermal head (1) is arranged in a pattern according to the heat generation pattern of the thermal head (11).
The ink is transferred and recorded onto the recording paper.

In the middle of the recording paper insertion path, the second driving roller circle is disposed opposite to a downward spring plate (10a) that forms part of the insertion path, and the ejection guide unVC is also placed in that spring plate portion. Sixth driving roller rollers are disposed facing each other, and the recording paper passes through the recording paper insertion path 101.
Retraction inward and ejection to the outside of the ejection guide [111] are forced, respectively. As shown in FIG. 6, the driving forces of these second and sixth drive rollers U9 are provided at the ends of each roller with pulleys U51 (F17) and bells).
19i, and is further applied to the motor (9) via the belt (4) and pulley (c).

The attached body (to) has an upper holding plate (50a) and a lower holding plate (60b).
), and holds a rectangular plate-shaped paper feed cassette t3j) inserted between them. The suppression plate (9) arranged in the cassette is swingable around the rear edge (62a) fixed to the bottom (61a) of the cassette, and is attached to the suppression plate (9). A stack of recording paper (c) is placed.

The roller arm (which supports the suppression roller (b) so as to rotate freely) and the contact arm (to) rotate together through a joint shaft @, and the free end of the contact arm Elli is drawn to the spring position. One press roller (to) is urged to rotate clockwise around the coupling shaft ■, and the press roller (to) is pressed against the lower holding plate (30b) and the bottom surface of the paper feed cassette (
31a) enters the open Roeri KK cassette circle and suppresses the plate □
Press □□.

- 10,000, the paper feed roller (a) is rotated at the normal position above the paper feed cassette C11) attached to the upper mounting body, and is therefore pressed against the suppression plate @. The outermost surface of the recording paper stack (c) is constantly in pressure contact with the paper feed roller (7),
As the roller rotates, the outermost recording paper is produced one by one, passed through the auxiliary guide plate (10b), and then transferred to the platen (
2) and the ink sheet (6a). The recording paper transferred in this manner is then inserted into the recording paper insertion path u1 and fL7j as described above, and is finally inserted into the ejection guide aI1. ct+ discharged.

A gross boolean IJ (49) shown in Fig. 6 is fed to the shaft end of the rotation @θυ of the paper feed roller (6), and the boo IJ is interlocked with an electromagnetic clutch (■) via a belt (c) 7. ing.

- As mentioned above, the rotation of the pulley (19) connected to the motor (9) through the Pel N201w directly reaches the support ring.
The rotation of the support rod is transmitted to the electromagnetic clutch (b). Is there any paper in the paper cassette etc.? When recording using the electromagnetic clutch (b), the electromagnetic clutch (b) is energized for a certain period of time.
At this time, the rotation of the motor (9) rotates the belt (431VC transmission wheel 81) and the paper feed roller via the support rod ω.

The release lever (60) (Fig. 1) is rotatable around the lever (61), and when it is manually rotated in the Z counterclockwise direction,
One end (60a) comes into contact with a contact roller (36a) K which is pivotally supported in the middle of the contact arm (1). When the release lever (60) Yli still moves once against the action of the spring body ■, the abutment arm SQ, and thus the roller arm (7), rotates counterclockwise about the coupling shaft @ heat center, and then Suppression roller C14
) escapes to the outside of the paper feed cassette c31) The paper feed cassette C3]> can be attached and detached from the mounting body (1) when the pressure roller (b) is in the ejected state. It is attached to a fixed side plate (70) and a fixed pair of movable side plates (80) arranged slightly inside and parallel to these fixed side plates. Incidentally, one of the pair of fixed side plates (70) and the movable side plate adjacent thereto are both located in the front and therefore do not appear in FIG.

Although they are supported by a pair of fixed side plates (70), the ink sheet roll (3), guide roller +41151, first drive roller (6), guide roller (71), and take-up roller (
81 and the rotational shafts of the thermal head 11+, [i motor (9) and the motor and the first! This is a transmission system between the fl moving roller (6) and the take-up roll (8).

The ink sheet roll (3) has bearings (71) attached to a pair of fixed side plates (70) to enable its conversion.
The zero-crook winding roll (8), which is simply equipped with a rotating shaft that can protrude from both ends of the VC ink sheet roll, is equipped with a winding roll shaft (8a), as shown in FIG. ) is pressed and clamped together with a hollow knife by the left and right reel plates (90) and (91) on both sides. The left reel plate (90) is rotatably attached to the shaft (75) fixed to the fixed 1 μm plate (70) iC together with the Boo ++ (76), and the right lJ-le Enoki (91) is It is fixed to the other fixed side plate (70) and is attached to the pi axis (77) so that it can move forward and backward in the direction of the cough axis and rotate automatically, and is further biased to the left by a spring (78). There is. Then, install the right IJ-le plate (91
) By retreating against the action of the spring (78), the edge-wound U-roll (8) can be attached and retracted easily.

Even though it is supported by a pair of towns, Afilj & (80),
iii: recording paper insertion path α■, support plan disc (10b), second drive roller u41. Ejection guide ti11. ．． 6th drive roller (15), suppression roller 17), paper feed roller (g)
, mounting body mountain, roller arm (2), abutment arm (to), connection@assistant, release lever (60), etc. FIG. 5 shows partial details a of these. #gc1-Rotating axis of roller However, it rotates between a pair of movable side plates (80) (80); are arranged, and each roller arm (c) has an O-coupling shaft (c) which is connected to a coupling shaft (vC) which rotates freely between a pair of movable measuring plates (80) (80).
One end of 9) has a length of 1 m and a slant (80) protruding from it, and an abutting arm (7) is fixed to its tip. Release lever (
60) u, n shaft (6
1) is a rotatably supported arrangement.

Refer again to Figures 1 and 6.
A pair of movable side plates (80) pass through a pair of fixed side plates (70) 2 to a support rod that accommodates I and electromagnetic clutch levers, respectively.
A stop rod (i.e.,
o), and clockwise rotation of the pair of movable side plates (80) centered around the support rod ω is caused by the rear ends of the pair of movable side plates (80) reaching the stop rod (100). It is limited to contact. In such a restricted state, the pair of movable side plates (80) become stable, and this toxothermal head (1)
comes into elastic contact with the platen 121K, and the suppression roller (7
) is in contact with the first drive roller 6.The position of the platen 11) in this state will hereinafter be referred to as the predetermined position.Figure 2 shows the state in which the platen (2) is separated from the thermal head (1). show. This state U exposes most of the movable side plate (80) and the support rod (4) (5a) (5a), which is centered on the support rod (4) when it is lifted up. becomes easier.

- The thermal head 11) still rotates around the axis (121) due to the action of the spring body t131 due to the separation of the platen (2) that was in contact with the 7LVC, but the pair of fixed side plates (70 ) Interval 11'i: The length of the ink sheet transport system 13 corresponds to the fixed stopper shaft (101), and its movement length is limited at an appropriate point.
After converting the ink sheet into fr
81J) When it is lowered, the platen (2) automatically comes into elastic contact with the thermal head at the predetermined position as shown in FIG.

In order to ensure that such an elastic contact state does not occur, a manually releasable locking device is provided to lock the rear end of the movable side plate (80) in contact with the stop lever (100). <Effects> If the present invention is implemented, an ink sheet for thermal transfer and an ink sheet for thermal transfer can be provided between the thermal head and the platen. platen,
The ink sheet transport system and the recording system are optimally distributed and mounted on the fixed side plate and the movable side plate (Step 9) Despite this complicated configuration, the thermal head and platen can be separated from each other. ,0 which makes it easy to replace the ink sheet

[Brief explanation of the drawing]

The figures show an embodiment of the present invention, and FIGS. 1 and 2 are side sectional views showing different lying positions Z, FIG. 6 is a perspective view of the main parts, FIG. 4 is a sectional view of the main parts, and FIG. It is a plan view of the main part. (70)...Fixed side plate, (80)...Movable side plate, ■
...Support rod, +11...Passumal head, (2
)...Platen, (3a)...Ink sheet, (3
1)...Paper feed cassette, (9)...Press plate, (to)
□□□ - Suppression roller as pressing means, roller arm, spring E, (60)...Release release.

Claims (1)

[Claims] +11 A pair of fixed side plates, a pair of rotatable flexible plates set on the pair of fixed side plates as fixed support rods, and a thermal head and thermal transfer ink sheet transfer mounted on the fixed side plates, respectively. system, each mounted on the movable side plate 7'L, a fixed female paper transport system, a platen that can come into contact with the thermal head, and a mounting body for a paper feed cassette that stores the recording paper stack, and the paper feed The cassette has a suppressing plate capable of suppressing the recording paper stack in the stacking direction, and applies a pressing force to the suppressing plate when the paper feed cassette is attached to the mounting body 1c on the movable side plate K. A thermal transfer device characterized in that a pressing means and a release means for releasing the pressure of the pressing means are attached.