JP2508311Y2 - Ink ribbon feeding device for drawing machine - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Application Field] The present invention relates to an ink ribbon feeding device in a thermal transfer type image drawing machine such as a printer or a plotter for printing or drawing.

[Conventional technology]

As shown in FIG. 5, an ink ribbon feeding device of a conventional thermal transfer printer / plotter includes a roll-shaped ink ribbon 4 wound around an ink ribbon supply roller 2 and held between a line head 6 and a platen roller 8. While feeding, the paper 10 is fed between the line head 6 and the platen roller 8 together with the ink ribbon 4 by the rotation of the feed roller 12,
Predetermined printing or drawing is performed on the paper 10.

[Problems to be solved by the invention]

As described above, when the ink ribbon 4 having a particularly wide width is used for the line head 6, when the ink ribbon 4 is fed from the supply roller 2 to the line head 6, the ink ribbon 4 is likely to be wrinkled. There was a defect that caused printing and uneven printing.

The present invention aims to eliminate the above defects.

[Means for solving problems]

In order to achieve the above object, the present invention provides a roll-shaped ink ribbon 28 wound around an ink ribbon supply roller 18.
Is supplied to the line head 16 while the paper is fed between the line head 16 and the platen roller 34 to perform predetermined printing or the like.
A flat guide surface made of a sheet-like member is movably disposed between the ink ribbon supply roller 18 and the ink ribbon supply roller 18, and one end of the guide surface is near the line head 16. It is made to be close to this at approximately the same height.

[Action]

The ink ribbon 28 fed from the ink ribbon supply roller 18 is supported by the guide surface up to the front of the line head 16 in a state of being developed in a plane shape.
The formation of wrinkles is prevented by the guide surface.

〔Example〕

Hereinafter, the configuration of the present invention will be described in detail with reference to the embodiments shown in the accompanying drawings.

In FIG. 1 and FIG. 2, 14 is a large-scale thermal transfer type plotter (printer), which has a line head on the machine body.
16 are arranged. An ink ribbon supply roller 18 is rotatably supported on one side of the line head 16, and an ink ribbon take-up roller 20 is rotatably supported on the other side of the line head 16 in association with a rotary drive system. ing. The line head 16 is located on one side of the line head 16 and
A peeling roller 22 is rotatably supported near the peeling roller, and a guide roller 24 is rotatably supported below the peeling roller 22.

Below the ink ribbon supply roller 18, a guide paper take-up roller 26 is rotatably supported in association with a rotary drive system.

The ink ribbon supply roller 18 holds a composite roll 32 in which a wide strip-shaped ink ribbon 28 is overlaid with a guide sheet 30 having the same lateral width and wound in a roll shape. A platen roller 34 is associated with the rotation driving device, and one of these is a paper feed roller 36 associated with the driving device.
And a guide roller 38 elastically contacting with the sheet feed means, and on the other side of the platen roller 34, sheet guide means composed of rotatable guide rollers 40 and 42 is provided.

 Next, the operation of this embodiment will be described.

When printing or drawing is performed, the composite roll 32 is fed from the ink ribbon supply roller 18 onto the peeling roller 22, and the composite roll 32 is developed between the rollers 18 and 22 in a planar shape. This unfolding portion of the composite roll 32 includes an ink ribbon 28 and rollers 18,2.
This ink ribbon 28 overlaps the lower surface of the ribbon 28 between the two.
Guide paper 30 that supports the
Is taken up by the guide paper take-up roller 26 via the guide roller 24. The ink ribbon 28 is taken up by the ink ribbon take-up roller 20 at a predetermined speed via the line head 16. The guide paper 30 between the rollers 18 and 22 constitutes a flat guide surface. On the other hand, the paper 44 inserted in the paper insertion guide (not shown) passes between the feed roller 36 and the guide roller 38, and then the line head 16 and the platen roller 34.
The printing paper and the drawing data that are inserted in the space and supplied to the line head 16 are thermally transferred to the paper 44 through the ink ribbon 38, and the paper 44 passes between the guide rollers 40 and 42 at a predetermined speed, and then the upper side of the machine body. Is sent to the paper discharge port.

The guide surface made of the guide paper 30 overlaps with the ink ribbon 28 until just before it reaches the line head 16.
28 is less likely to wrinkle on line head 16. Therefore, the ink ribbon 28 is supplied onto the line head 16 in a state of being developed in a plane.

Next, another embodiment for preventing wrinkles of the ink ribbon will be described with reference to FIG.

18 is an ink ribbon supply roller rotatably supported on the machine body, 20 is an ink ribbon take-up roller linked to a rotation drive system, and 46 is a stacking roller rotatably supported on the machine body. The feed rollers 48 that are linked to each other are arranged to face each other. A peeling roller 50 is rotatably supported near one side of the line head 16. Guide paper
52 is a supply roller 54, a stacking roller 46 and a peeling roller.
It is configured so as to be supplied to 50 and be wound up by a winding roller 56. The guide sheet 52 forms a flat guide surface having a width substantially the same as that of the ink ribbon 28 between the stacking roller 46 and the peeling roller 50. The guide surface side of the guide paper 52 is configured to have some adhesiveness. The roll portion of the ink ribbon 28 is held by the ink ribbon supply roller 18, and the ribbon 28 has a guide surface and a line head.
It is configured to be wound around the ink ribbon winding roller 20 via the upper part 16. In the figure, 34 is a platen and 44 is a sheet.

In the above configuration, the wide ribbon-shaped ink ribbon 28 fed from the ink ribbon supply roller 18 is in the vicinity of the line head 16 in a state of being overlapped with the guide surface of the guide sheet 52 between the stacking roller 46 and the peeling roller 50. The ink ribbon 28 is separated from the guide surface of the guide paper 52 by the peeling roller 50, and the ink ribbon 28 is
It is supplied onto the line head 16 and wound up by the ink ribbon winding roller 20. The ink ribbon 28 supplied onto the line head 16 is prevented from forming wrinkles by the flat guide surface made of the guide paper 52. When the ink ribbon 28 is fed over the guide surface, the guide surface moves together with the ink ribbon 28 due to friction with the ink ribbon 28.

Next, another embodiment will be described with reference to FIG.

Reference numerals 58 and 60 denote belt pulleys rotatably supported on the machine body, around which an endless guide seat belt 62 having a certain degree of adhesiveness is hung, and the belt 62 is provided between the line head 16 and the ink ribbon supply roller 18. In addition, a planar guide surface having adhesiveness and a width substantially the same as the width of the ink ribbon 28 is formed. One end of this guide surface is close to the line head 16 at the same height as it. The other structure is the same as that of the embodiment shown in FIG. In the above-described configuration, the ink ribbon 28 supplied from the ink ribbon supply roller 18 onto the line head 16 overlaps on the guide surface up to the front of the line head 16 and moves together with the guide surface in cooperation with the guide surface. This prevents the formation of wrinkles.
The ink ribbon 28 that has passed through the line head 16 is wound around the ink ribbon winding roller 20.

〔effect〕

According to the present invention, as described above, the ink ribbon is guided to the front side of the line head by the sheet-shaped flat guide, so that there is an effect that the formation of wrinkles of the ink ribbon supplied to the line head can be prevented.

[Brief description of drawings]

1 is an external view, FIG. 2 is a side view, FIG. 3 is a side view showing another embodiment, FIG. 4 is a side view showing another embodiment, and FIG. FIG. 2 ... Ink ribbon supply roller, 4 ... Ink ribbon,
6 ... Line head, 8 ... Platen roller, 10 ... Paper, 12 ... Feed roller, 14 ... Plotter, 16 ... Line head, 18 ... Ink ribbon supply roller, 20 ... Ink ribbon take-up roller , 22 …… Peeling roller, 24 …… Guide roller, 26 …… Guide paper take-up roller, 28 …… Ink ribbon, 30 …… Guide paper, 32 …… Composite roll, 34 …… Platen, 36 …… Paper feed roller , 38 …… Guide roller,
40, 42 …… Guide roller, 44 …… Paper, 46 …… Stacking roller, 48 …… Feed roller, 50 …… Peeling roller, 52 …… Guide paper, 54 …… Supply roller, 56 …… Take-up roller, 58,6
0 …… Belt pulley, 62 …… Seat belt.

Claims (1)

(57) [Scope of utility model registration request] 1. A roll-shaped ink ribbon 28 wound and held by an ink ribbon supply roller 18 is supplied to a line head 16, while paper is fed to the line head 16 and a platen roller 34.
The line head 16 and the ink ribbon supply roller are used in an image-forming machine that is fed between the two to perform predetermined printing.
A flat guide surface formed of a sheet-shaped member having substantially the same width as that of the ink ribbon 28 is movably disposed along the feed direction of the ink ribbon 28 so as to interlock with the ink ribbon 18, Connect one end of the guide surface to the line head 16
An ink ribbon feeding device characterized in that the ink ribbon feeding device is made to be close to and near the same height.