JP2520535Y2 - Pin belt tractor - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Outline] Regarding the structure of a pin belt tractor used in a printer, a plurality of pins arranged at predetermined intervals are provided for the purpose of easily and correctly setting a continuous form on the printer. In a pair of left and right pin belt tractors, each of the pin belts or guides is composed of an endless belt-shaped pin belt provided with the frame, and a frame provided on the side of the pin belt and having a guide surface facing the lower surface of the continuous form transferred by the pin belt. The surface is provided with a plurality of indicator parts arranged at a predetermined interval along the pin belt transfer direction, and the indicator parts arranged opposite to each other on the left and right sides are the front edge parts of the continuous forms when the continuous forms are set on the pin belt tractor. The structure is such that a part is covered by.

[Field of Industrial Application] The present invention relates to a configuration of a continuous form used in a printer.

The sheets used in the printer are mainly cut sheets and continuous forms.

Above all, the contact form is long, and if the initial setting is not done correctly, skewing or jamming will occur, so it is necessary to set it carefully.

[Conventional technology]

As shown in FIG. 5, the continuous form 1 is provided with a plurality of sprocket holes 3 which are continuous at a predetermined pitch (for example, 12.7 mm when the paper width is 15 inches) on both sides thereof, as shown in the perspective view of FIG. It is transferred by the pin belt tractor 2.

The pin belt tractor 2 is an endless belt (hereinafter referred to as a pin belt) 4 in which a plurality of pins 4a that engage with the sprocket holes 3 of the continuous form 1 are provided around the surface at predetermined intervals.
And a pulley 5 for rotating the pin belt 4, and a pin belt 4
A frame 8 having a guide surface 8a which is provided on the side of the continuous belt 1 and which is opposed to the lower surface of the continuous sheet 1 transported by the pin belt 4, and an arrow A for preventing the continuous sheet 1 set on the pin belt 4 from coming off. -B is provided with a cover 6 that can be opened and closed.

Therefore, in order to set the continuous form 1, the cover 6 is opened in the direction of arrow A, and the sprocket hole 3 of the continuous form 1 is inserted into the pin belt 4
After engaging with the pin 4a, the cover 6 is closed in the direction of arrow B.

As shown in the plan view of FIG. 7, the pin belt tractor 2 is provided at the left and right symmetrical positions of the conveying path, and the continuous form 1 has the sprocket holes 3 at the left and right symmetrical positions symmetrically in order to prevent skewing. The pin belt tractor 2 at the position is set so as to engage with the pin 4a.

[Problems to be solved by the device]

As mentioned above, in the continuous form, the left and right sprocket holes must be correctly engaged with the predetermined pins at the symmetrical positions of the left and right pin belt tractors, but this work is difficult, especially when the form is wide. There are many.

In the continuous form illustrated above, the pitch of the sprocket holes is 12.7 mm with respect to the width of 15 inches, and even if one sprocket hole is shifted and set, the inclination is about 1.9 degrees, which is almost discernible to the naked eye. Have difficulty.

Therefore, there is a problem that the skew is noticed only after the printing is started.

An object of the present invention is to make it possible to set a continuous form on a printer easily and correctly.

[Means for solving the problem]

In order to achieve the above object, the present invention provides an endless belt pin belt 4 having a plurality of pins 4a arranged at a predetermined interval, as shown in FIG. In a pair of left and right pin belt tractors consisting of a frame 8 having a guide surface 8a opposed to the lower surface of the continuous form 1 transferred by the pin belt 4, in each pin belt 4 or guide surface 8a, along the transfer direction of the pin belt 4. And a plurality of indicating portions 7 arranged at predetermined intervals. The indicator portions 7 arranged so as to face each other on the left and right are partially covered by the front edge of the continuous form 1 when the continuous form 1 is set on the pin belt tractor.

[Action]

If the sprocket holes of the continuous form are set with a shift of, for example, 1 pitch, the front edge of the continuous form changes the state of covering the left and right pin belts or the indicator provided opposite the guide surface, and the continuous form is inclined. It is easy to check the status.

〔Example〕

 2 to 4 show an embodiment of the present invention.

 The same portions are denoted by the same reference numerals throughout the drawings.

In the present invention, as shown in the perspective view of FIG. 2, the leading edge portion 1a of the continuous form is arranged so as to face the pin belts 4 of the pin belt tractors 2 provided at symmetrical positions on both sides at a predetermined pitch.
An instruction section 7 for instructing the positional relationship with the is provided.

That is, the indicating portion 7 is a triangular protrusion provided on the inner edge surface of the pin belt 4 at intervals of one pitch with the middle portion between the pins 4a as the center, as shown in the figure, and the length of the bottom side is It is about one pitch.

Therefore, the instruction unit 7 moves as the pin belt 4 rotates.

Alternatively, as shown in the perspective view of FIG. 3, the indicating portion 7 is provided on the guide surface 8a of the frame 8 inside the pin belt tractor 4 as shown.

By coloring the indicator 7 in a color that is easy to see, it is easy to visually recognize the inclination when setting the continuous forms.

With such a configuration, when the continuous form 1 is correctly set as shown in the plan view of FIG. 4 (a),
When the leading edge portion 1a of the continuous form 1 covers the indicating portion 7 evenly on the left and right sides and is set diagonally as shown in FIG. 7B, the covering state of the indicating portion 7 is different between the left and right.

The shape of the indicating portion 7 is not limited to the triangular shape, and may be a semicircular protrusion, for example.

Although the discriminability is slightly inferior, it may be provided on the inner edge of the cover 6 of the pin belt tractor 2.

[Effect of device]

By applying the pin belt tractor of the present invention to a printer, it is possible to easily determine whether a set of continuous forms is good or bad, and to prevent skewing or jamming of continuous forms.
It has a great economic and industrial effect.

[Brief description of drawings]

1 is a principle view of the pin belt tractor of the present invention, FIG. 2 is a perspective view of the pin belt tractor of the present invention, FIG. 3 is another embodiment, and FIG. 4 (a) is the pin belt tractor of the present invention. Fig. 4 (b) is a plan view of the main parts when the continuous form is set diagonally on the pin belt tractor of the present invention, and Fig. 5 is a plan view of the continuous form. FIG. 6 is a perspective view of a conventional pin belt tractor, and FIG. 7 is a plan view in which a continuous form is set on the pin belt tractor. In the figure, 1 is a continuous form, 2 is a pin belt tractor, 3 is a sprocket hole, 4 is a pin belt, 4a is a pin, 5 is a pulley, 6 is a cover, 7 is an indicator, 8 is a frame, and 8a is a guide surface. Is.

Claims (1)

(57) [Scope of utility model registration request] 1. A plurality of pins (4a) arranged at predetermined intervals.
An endless pin belt (4) provided with and a guide surface (8a) provided on the side of the pin belt (4) and facing the lower surface of the continuous form (1) transferred by the pin belt (4). In a pair of left and right pin belt tractors consisting of a frame (8), each of the pin belt (4) or the guide surface (8a)
And a plurality of indicator portions (7) arranged at a predetermined interval along the transfer direction of the pin belt (4). The indicator portions (7) arranged opposite to each other on the left and right are continuous with the pin belt tractor. A pin belt tractor, characterized in that when the form (1) is set, a part of the continuous form (1) is covered by the front edge of the form.