JPH058469A - Paper feed tractor - Google Patents

Abstract

(57) [Summary] [Purpose] By making the tractor cover transparent and providing a mark to align the leading edge of continuous form paper on the tractor frame that guides the tractor belt, the continuous form paper can be fed without opening and closing the tractor cover. It can be attached to and improves operability. In addition, the space required for opening and closing the tractor cover is not required, making the printer slim and
Downsize. [Structure] In a paper feed tractor for feeding continuous form paper to a printer by fitting feed holes 1a on both side edges of the continuous form paper 1 to tractor feed pins arranged on the outer circumference of the tractor belt at equal intervals, A transparent tractor cover 2 for holding the continuous form sheet against the tractor feed pin is provided, and a mark 3 for aligning the leading end of the continuous form sheet is provided on the tractor frame 6 for guiding the tractor belt.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention feeds continuous form paper into a printer by fitting feed holes at both side edges of the continuous form paper into tractor feed pins arranged at equal intervals on the outer circumference of a tractor belt. It concerns tractors.

[0002]

2. Description of the Related Art A printer, which is a computer output terminal device, is required to support a plurality of different continuous form sheets due to diversification of business use. Therefore, the conventional printer is equipped with a paper feed tractor at each of the front part and the rear part of the printer to support a plurality of different kinds of paper. In the conventional paper feed tractor in this case, open the tractor cover, fit the feed holes on both side edges of the continuous form paper to the tractor feed pins arranged at equal intervals on the outer circumference of the tractor belt, and then open the tractor cover. I was wearing it closed.

The prior art will be described below with reference to FIG. FIG. 4 is a schematic view of a printer using a conventional tractor,
FIG. 3 is a diagram in which the paper feed tractors 101 and 102 are attached to mounting portions (not shown) at the front portion and rear portion of the printer.
In order to mount the continuous form paper 104 on the paper feed tractor 101, the tractor cover 103 is opened as shown by imaginary lines 103a, and the feed holes on both side edges of the continuous form paper 104 are arranged at equal intervals on the outer circumference of the tractor belt. After fitting with the tractor pin, the tractor cover 103 is closed and mounted. The tractor 101 is drivingly connected to a paper feed motor (not shown) through a drive train (not shown), and feeds continuous form paper in the direction of arrow 105. The continuous form paper includes a paper feed roller 109 and an idler 1 that sandwich the form paper.
After being sent to the print position portion constituted by the platen 106 and the print head 107 by the 08 and printed, the arrow 1
The sheet is discharged in 10 directions and is sent out of the printer by the discharge roller 111 and the discharge idler 112.

[0004]

As can be seen from the above description, when the front part of the printer is equipped with the tractor 101, the tractor cover 103 is opened and the feed holes on both side edges of the continuous form sheet are connected to the tractor belt. After fitting the tractor feed pins arranged at equal intervals on the outer periphery and then mounting the tractor cover 103 by closing, the printer must secure the space S1 necessary for opening and closing the tractor cover 103. Had the problem of becoming larger. Further, since it is necessary to open and close the cover in the minimum necessary space and attach the continuous form paper, there is a problem that it is difficult to attach.

According to the present invention, continuous form sheets can be mounted on the paper feed tractor without opening and closing the tractor cover, and it is not necessary to provide the printer with a space necessary for opening and closing the tractor cover, and the size of the printer can be prevented. ,
The purpose is to improve operability.

[0006]

The structure of the present invention that achieves this object is as follows.

In a paper feed tractor for feeding continuous form paper to a printer by fitting feed holes on both side edges of the continuous form paper to tractor feed pins arranged on the outer circumference of the tractor belt at equal intervals, the paper feed tractor is held against the tractor feed pin. Then, a transparent tractor cover for pressing the continuous form sheet against the tractor feed pin is provided, and a mark for aligning the leading end of the continuous form sheet is provided on the tractor frame for guiding the tractor belt.

[0008]

An embodiment of the present invention will be described in detail with reference to the drawings. FIG. 1 is a perspective view of an embodiment showing the present invention, in which a continuous form sheet 1 is mounted on a paper feed tractor. The tractor cover 2 is made of a transparent material and has a tractor belt 11
A mark 3 for aligning the leading end 1b of the continuous form sheet 1 is provided on the tractor frame 6 for guiding the. Therefore,
With the tractor cover 2 made of a transparent material, the leading edge 1b of the continuous form sheet 1 can be easily visually recognized. The operation will be described in detail with reference to FIG. FIG. 2 is a sectional view of a main part of the tractor. The driven pulley 10 has a tractor belt 11 on its outer circumference, and the rotation of a paper feed motor (not shown) is transmitted to a drive pulley 10a via a shaft 4 shown in FIG. Tractor feed pins 12 are arranged on the tractor belt 11 at equal intervals and rotate along a locus 13. On the other hand, when the leading edge 1b of the continuous form sheet 1 is aligned with the mark 3 for aligning the leading end of the continuous form sheet on the tractor frame 6, the feed hole 1a and the tractor feed pin 1 located at a position about 1/2 inch from the edge of the sheet.
The locus 13 of 2 matches. That is, simply aligning the leading edge of the continuous form sheet 1 with the mark 3 for aligning the leading edge of the continuous form sheet on the transparent tractor cover 2 and then turning on the paper feed switch of the printer (not shown) and the continuous form sheet 1 The feed hole 1a is fitted to feed the paper.

FIG. 3 is a schematic view of a printer using the tractors 18 and 19 of this embodiment. Paper feed tractor 18, 1
FIG. 9 is a diagram in which 9 is attached to mounting portions (not shown) of a front portion and a rear portion of the printer. In order to mount the continuous form paper 1 on the paper feed tractor 18, the continuous form paper 1 is attached to the mark 3 for aligning the leading end of the continuous form paper on the tractor frame.
The paper feed switch of the printer is turned on, and the tractor feed pin and the feed hole of continuous form paper are fitted. The paper feed tractor 18 feeds the continuous form paper in the direction of arrow 23. The continuous form paper 1 includes a paper feed roller 21 and an idler 2 that sandwich the form paper.
The sheet is sent to a print position portion constituted by the platen 24 and the print head 25 by 2 and printed, then discharged in the direction of arrow 26 and sent out of the printer by a discharge roller 27 and a discharge idler 28. Since such a printer can reduce the space S1 for the paper feed tractor 18, the height H2 of 3a can be made significantly smaller than the height H1 of the conventional printer shown in FIG. ..

The mark for aligning the leading edge of the continuous form sheet in the embodiment of the present invention has a convex shape, but is not limited to this and includes all visible shapes such as a concave shape.

[0011]

According to the present invention, when the tractor is mounted on the front portion of the printer, it is not necessary to open and close the tractor cover when loading continuous form sheets, so the space required for opening and closing the tractor cover is provided in the printer. There is no need to provide it. Therefore, the printer can be made thin and small, and the cost can be reduced. Further, the continuous form paper can be mounted without opening / closing the tractor cover, and the tractor feed pin and the feed hole of the continuous form paper can be fitted only by turning on the paper feed switch of the printer. It has an excellent effect that the operability is greatly improved.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of the present invention.

FIG. 2 is a sectional view of an essential part showing the operation of the above embodiment.

FIG. 3 is a schematic diagram of a printer using the paper feed tractor of the present invention.

FIG. 4 is a schematic diagram of a printer using a conventional paper feed tractor.

[Explanation of symbols]

 1 continuous form paper 1a feed hole 2 transparent tractor cover 3 mark to align the ends of continuous form paper 6 tractor frame 11 tractor belt 12 tractor feed pin

Claims (1)

Claims: 1. Feeding a continuous form sheet into a printer by fitting feed holes at both side edges of the continuous form sheet to tractor feed pins arranged at equal intervals on the outer circumference of the tractor belt. In the tractor, a transparent tractor cover that faces the tractor feed pin and presses the continuous form sheet against the tractor feed pin is provided, and a mark for aligning the leading end of the continuous form sheet is provided on the tractor frame that guides the tractor belt. Paper feed tractor.