JPS63202559A - Thermal transfer printer - Google Patents

Abstract

PURPOSE:To prevent a paper jam by bending both ends of paper release side end part of the lower chute of a paper release upper and lower chutes ins the opposite direction to the rolling direction of paper so as to prevent rolling of the released paper. CONSTITUTION:Paper 25 rolled around a paper holder is released with guided between the upper chute 33 and the lower chute 34 after printing. Both ends of the paper release sides 34a and 34b of the lower chute 34 are bended by an angle alpha in the opposite direction to the rolling direction of the paper holder. Accordingly, rolling property of the paper 25 by the holder is corrected at the bended part, and even if the paper 25 is not released in order, the previously released paper does not prevent advance of the next released paper, and paper jam does not occur.

Description

[Detailed description of the invention] Industrial applications The present invention relates to thermal transfer printers.

BACKGROUND OF THE INVENTION FIG. 3 is an overall perspective view of a thermal transfer color printer. In the figure, 1 is a lower cabinet, 2 is a circuit section, and 3 is a power supply panel. A pinch roller 4 contacts the capstan roller 5 and applies a driving force. Reference numeral 6 denotes a platen roller, which together with the pinch roller 4 and capstan roller 6 constitutes a paper feeding mechanism. Here, the pinch roller 4 and the platen roller e are driven by the main motor 7. , 8 is a pinch roller lever that brings the pinch row 24 into contact with the capstan roller 6 or releases it from contact by interlocking with the operation of the cam. 9 is a peeling roller that separates the ink film from the paper, 1o is a paper feed roller that brings the paper into contact with the platen roller 6, and 11 is a paper guide that guides the paper. Reference numeral 12 denotes a paper support that stores the paper wound into a roll. Reference numeral 13 denotes a cover frame, which is opened and closed when the lock lever 14 and the lock lever shaft 15 are engaged or not engaged.

On the cover frame 13, a ribbon feed gear 16 for positioning one end of the ribbon feed, in which an ink film is wound into a roll, and a ribbon feed presser 17 for applying a pressing force to the other end of the ribbon feed are arranged. A head holder 18 has a fixed head 19, and is fixed to a head arm 20 that is linked to the movement of a cam. 21 is a cooling fan that radiates heat from the main motor 7, circuit section 2, etc., and 22 is an operation panel. 23 is a top cover, and 24 is an upper cabinet.

By the way, in a conventional thermal transfer color printer, paper feeding and printing were carried out as shown in FIG.

First, when feeding the paper, as shown in the same figure (IL), the paper 25 is fed by one screen in the input direction from the paper holder 26 by the counterclockwise rotational driving force of the pinch roller 4 and the platen roller 6. It will be done.

At this time, the head 19 is located away from the platen row 26, the ink film 27 is in a stopped state, and no printing is performed. In addition, in e) of the same figure, 2
8 is an ink film holder, and 29 is an ink film winding holder.

Next, when printing, as shown in ) in the same figure.

The platen roller 6 and the pinch roller 4 rotate clockwise, and the paper 26 is rewound in the B direction by one screen. At this time, the head 19 is in contact with the platen roller 6, the ink film holder 28 and the ink film take-up holder 29 are rotating counterclockwise, and the ink film 2
7 is rewound in the B direction in conjunction with the paper 26. In this manner, heat is applied by the head 19 to the ink film 27, and a predetermined print is made on the paper 26.

Incidentally, c, yellow, magenta, and cyan are sequentially arranged on each screen on the ink film 27, and color printing is performed by repeating the above operation three times.

The printed portion is configured as described above. On the other hand, the paper on which printing has been completed is discharged to the outside by a paper discharge device.

FIG. 6 is a partial perspective view of a conventional paper ejection device.

In the figure, 30 and 31 are upper rollers, respectively.

The lower roller is rotationally driven by a drive motor 32. 3
01L and 311L are the upper roller shafts respectively.

This is the lower roller shaft. 33 and 34 are an upper chute and a lower chute, respectively, through which the paper is guided and ejected.

Problems to be Solved by the Invention However, the paper 26 is wound around the paper holder 26, and even if the paper 26 is discharged from the upper and lower chutes 33 and 34, it ends up in a roll on the stacking device 43. . If the paper 25 is rolled on the stacking device 43, the next paper 25 to be discharged will be prevented from advancing, resulting in a paper jam.

The present invention aims to provide a thermal transfer printer that can solve the above problems.

Means for Solving the Problems The thermal transfer printer of the present invention includes a paper holder on which paper is wound, and upper and lower chutes for guiding the paper ejected from the paper holder. Both ends on the paper side are bent in the opposite direction to the winding direction of the paper.

For operational reasons, both ends of the lower chute on the paper ejection side are bent.
The paper is bent at both ends in a direction opposite to the winding direction of the paper holder to prevent the paper from becoming rolled.

Embodiment FIG. 1 is a schematic diagram of a paper ejecting device portion of a thermal transfer color printer according to an embodiment of the present invention. FIG. 1 (IL) is a plan view, FIG. C) is a side view in the B direction. In the figure, 33 is an upper chute, 34 is a lower chute, and 341L and 34b are bent portions.

36 is a paper ejection motor bracket, 37 is a paper ejection motor, 38
is the paper ejection gear, 39 is the intermediate gear, 4o is the paper ejection lever, 41
is a paper ejection pulley, and 42 is an idle roller.

During printing, the paper 25 is reciprocated between upper and lower shoes (33, 34). At this time, the paper ejection pulley 41 of the paper ejection device attached to the lower chute 34 is located at a position below the lower chute 34 and is in a position where it does not interfere with the reciprocating movement of the paper 26.

When the paper is to be ejected after the immediate multi-color printing, the paper 25 is first cut into a standard length by the cutter, and the paper ejection motor 37 is rotated counterclockwise. Therefore, the intermediate gear 39 in contact with the paper ejection gear 38 rotates clockwise. Then, the paper ejection pulley 41 rotates counterclockwise and at the same time moves planetarily around the intermediate gear 39, and the ejection lever 4o raises the paper ejection pulley 41 until it comes into contact with the idling roller 42.

In this manner, the paper 26 is sandwiched between the idling roller 42 and the paper discharge pulley 41 and is discharged to the stacking device 43.

Here, when the paper 26 is ejected, the bent portions 341L and 3ab at the end of the lower chute 34 on the paper ejection side.

Both ends of the paper 250 will be bent by an angle α. This angle α is in the opposite direction to the winding direction of the paper 25 on the paper holder 26, so when the paper 26 is ejected via the upper and lower chutes 33 and 34, the rollability of the paper 25 is Corrected.

Therefore, even if the sheets 26 are sequentially ejected, the previously ejected sheet does not prevent the next ejected sheet from advancing.
A thermal transfer color printer without paper jam can be provided.

FIG. 2 is a diagram showing a specific example of a paper ejecting device used in the thermal transfer color printer of the present invention, in which FIG. 2 (IL) is an exploded perspective view, and FIG. (C) is a schematic side view of (in the same figure). In the same figure.

44 is a shaft, 46 is a compression spring that presses the paper ejection lever 40, 46 is a shaft, 47 is a pulley shaft, and 48 is an O-ring. That is, the paper ejection gear 38 is connected to the shaft 4
4 as an axis by a paper discharge motor 37. When the paper discharge gear 38 rotates counterclockwise, the intermediate gear 39 rotates clockwise.

At this time, the spring 46 pushes the paper ejection lever 4o and the intermediate gear 3.
9 is brought into contact with the lever 40, and the paper ejection lever 40 rotates clockwise around the shaft 46. A paper ejection pulley 41 is provided at the tip of the paper ejection lever 40 via a pulley shaft 47. Then, the paper ejection pulley 41 rotates counterclockwise, and the paper ejection pulley 41 is positioned on the lower chute 34 to eject the paper 26.

On the other hand, when the motor 37 is not rotating, the paper ejection lever 40
The counterclockwise rotational force due to its own weight overcomes the holding force of the paper ejection lever 40 by the spring 45, and the paper ejection pulley 41 is positioned below the lower chute 34.

Effects of the Invention According to the present invention, it is possible to prevent paper from rolling by providing a bent portion in the paper ejection chute, and to provide a thermal transfer color printer that can operate stably without paper jams.

[Brief explanation of the drawing]

Figures 1 (2L), (b), and (Q) are schematic diagrams of the operation of the paper discharge device of the thermal transfer color printer according to the embodiment of the present invention, and Figures 2 (&) to (0) are details of the paper discharge device. An explanatory diagram, FIG. 3 is an exploded perspective view of a thermal transfer color printer, and FIG.
) and ■) are schematic diagrams showing paper feeding and printing conditions, and FIG. 6 is a partial perspective view of a conventional paper ejecting device. 33... Upper chute, 34... Lower chute, 36... Paper ejection motor bracket, 37...
... Paper ejection motor, 38... Paper ejection gear, 3
9...Intermediate gear. 40... Paper ejection lever + 141... Paper ejection pulley, 42... Idle roller. Name of agent: Patent attorney Toshio Nakao and one other person Z5
- Paper (↓ Figure 2 and b)
(C) Figure 4 and a) q (b)

Claims (1)

[Claims] It is equipped with a paper holder on which paper is wound, and upper and lower chutes that guide the paper ejected from the paper holder, and both ends of the paper ejection side of the lower chute are connected in the opposite direction to the winding direction of the paper. A thermal transfer printer that bends in the direction.