JP2837693B2 - Printer linked paper feeder - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Summary] A continuous paper feeder for a printer using a pin belt tractor for transporting continuous paper having a paper transport feed hole, which can be manufactured at low cost An annular belt having a pin engaged with a feed hole formed at a predetermined interval in a stretched paper, and a belt is rotated to drive the belt to feed the paper. And the drive shaft is directly engaged with the rear surface of the shaft, and the belt is directly rotated by the drive shaft.

[Industrial applications]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a continuous paper feeding device for a printer using a pin belt tractor that transports continuous paper in which a feed hole for paper transport is provided.

As a continuous paper feeding device of a printer, there are a sprocket type in which a pin is provided on the outer periphery of a rotating wheel, and a tractor type in which a pin belt in which a pin is provided on the outer periphery is driven to rotate. The present invention relates to a pin belt driving portion of the tractor.

[Conventional technology]

FIG. 3 shows a conventional tractor. Reference numeral 51 denotes a pin belt having a plurality of pins 52 projecting from the outer peripheral surface at regular intervals. Reference numeral 53 denotes a drive shaft rotated by a motor. The drive shaft 53 rotates the gear-shaped pulley 54 that engages with the unevenness on the back surface of the pin belt 51, thereby rotating the pin belt 51. That is, the pin belt 51 is rotationally driven by passing the pulley 54 between the drive shaft 53 and the pin belt 51.

[Problems to be solved by the invention]

In recent years, the cost of the printer has been reduced, and it has been desired to reduce the cost as much as possible in all parts such as parts and units.

However, as described above, the conventional continuous paper feeding device of the printer has a large number of parts and a high cost because the pulley is interposed between the drive shaft and the pin belt.

SUMMARY OF THE INVENTION An object of the present invention is to provide a continuous paper feeding device for a printer which can solve such a conventional disadvantage and can be manufactured at low cost.

[Means for solving the problem]

In order to achieve the above object, a continuous paper feeding device for a printer according to the present invention is, as shown in FIG. 1 for explaining an embodiment, related to a feed hole projecting at a predetermined interval in continuous paper. In a continuous paper feeder of a printer having an annular belt 2 having pins 1 and a drive shaft 3 for rotating the belt 2 to feed a paper, the drive shaft 3 is directly attached to the back surface of the belt 2. The belt 2 is directly driven to rotate by the drive shaft 3 when engaged.

[Action]

When the drive shaft 3 rotates, the belt 2 that directly engages with the drive shaft 3 is rotationally driven to feed the paper.

〔Example〕

 Embodiments will be described with reference to the drawings.

FIG. 2 shows a continuous paper feeding unit of the printer.
Reference numeral 30 denotes a continuous paper, 31 denotes feed holes protruding from both side edges of the paper at regular intervals, 10 denotes a pair of tractors provided on the left and right sides, and one tractor 10 is shown in FIG. Paper
30 is partially cut away.

11 is a frame of the tractor 10 and a stay shaft
It is provided slidably with respect to 12. However, the frame 11 is fixed to the stay shaft 12 by a fixing mechanism (not shown) at an appropriate position according to the width of the tension paper 30 to be used.
Can be fixed. Reference numeral 13 denotes a paper press plate hinged along the side edge of the frame 11. The right paper press plate 13 in FIG. 2 is closed to press the tension paper 30, and the left paper press plate 13 shows an opened state.

2 is a plurality of pins 1 that engage with the feed holes 31 of the tension paper 30.
Is an annular belt protruding from the front side, and is attached to the frame 11 so as to be rotatable in the sheet feeding direction. 3
Is a drive shaft for rotationally driving the belt 2 and is rotationally driven by a motor (not shown).
The drive shaft 3 is provided in parallel with the stay shaft 12, and has the same cross-sectional shape over the entire width of the moving range of the tractor 10.

FIG. 1 is a cross-sectional view of the tractor 10 cut along the center line of the belt 2.

The belt 2 is made of a flexible synthetic resin material,
The pins 1 are provided on the outer periphery at equal intervals in accordance with the intervals of the feed holes 31. The unevenness 5 at even intervals on the back of the belt 2
Are formed. The drive shaft 3 is formed in a sectional shape that engages with the unevenness 5 on the back surface of the belt 2. Therefore, the belt 2 is provided in the concave portion on the drive shaft 3 side.
When the convex portion on the back side is engaged and the drive shaft 3 rotates as shown by the arrow in FIG. 1, the belt 2 is directly driven to rotate by this, and the sheet is fed.

The shape of the engaging portion between the belt 2 and the drive shaft 3 is not limited to that of the above-described embodiment, but is a non-circular shape that can rotate the belt 2 by the rotation of the drive shaft 3. Any shape is acceptable.

〔The invention's effect〕

According to the continuous paper feeding device of the printer of the present invention, since the belt is directly driven by the drive shaft, the pulley that has conventionally been interposed is unnecessary, and the number of components of the drive transmission unit can be reduced, and the cost can be reduced Can be down.

In recent years, the cost has been drastically reduced in printers and the like, so there is little room for further cost reduction, and the effect of reliably reducing the number of parts in this way is extremely large in terms of cost reduction.

[Brief description of the drawings]

 1 is a sectional view of a tractor according to an embodiment, FIG. 2 is a perspective view of a printer according to the embodiment, and FIG. 3 is a partial sectional view of a conventional example. In the figure, 1 ... pin, 2 ... belt, 3 ... drive shaft.

Claims (1)

(57) [Claims] 1. A belt made of a flexible material, which is formed in an elliptical shape and has pins protruding from an outer surface thereof, the pins being engaged with feed holes formed at predetermined intervals in continuous paper. In a continuous paper feeder for a printer having a drive shaft for feeding a paper by moving the paper, an unevenness is formed on the back surface of the belt, and the drive shaft is removably engaged with the unevenness of the belt. A continuous paper feed device for a printer, wherein the continuous paper feed device has a cross-sectional shape and is directly engaged with the back surface of the belt, and the belt is directly driven to rotate by the drive shaft.