JP2534023Y2 - Printer - Google Patents

Description

[Detailed description of the invention] [Overview] The present invention relates to a printer that stabilizes the running of a continuous form formed by laminating a plurality of sheets of paper. For the purpose of preventing interlayer slippage, a continuous form formed by laminating a plurality of sheets is wound around the surface and rotated and transported, and a continuous form is formed on the continuous form discharge side of the platen roller. A pinch roller that presses against the platen roller, a print head that prints on a continuous form facing the platen roller, and a pin belt tractor that engages with the continuous form and transfers the continuous form in front of the continuous form introduction side of the platen roller. It is provided on the pin belt tractor so that it can be opened and closed freely, and when closed, presses the innermost layer paper of the continuous form and presses the outermost layer paper of the continuous form so that it can run on the frame surface. And a braking means which has a continuous form holder in contact with the outermost layer, applies braking to the outermost layer paper, and brings a plurality of layers of the continuous form into a pressed state.

[Industrial applications]

The present invention relates to a printer for stabilizing the running of a continuous form formed by laminating a plurality of sheets.

As a printing paper used for the printer, a continuous form other than the cut sheet is generally used. 1 for continuous report
There are a stack of about 5 sheets and a stack of about 5 sheets, and a stack of a plurality of sheets is a so-called paper stapler such as point glue, stick glue, or gather between each layer.
It is fixed so that it can be peeled off.

When printing on such a continuous form, it is important that peeling and delamination do not occur.

[Conventional technology]

As shown in the main part side view of FIG. 2, a conventional configuration includes a platen roller 2 that wraps a continuous form 1 as a printing sheet around a surface and transfers the continuous form 1 from below to above by rotating in the direction of an arrow, and a platen roller 2. A pinch roller 3 for pressing the continuous form 1 against the platen roller 2 on the continuous form discharge side above the roller 2, and a continuous form 2 facing the platen roller 2.
And a pin belt tractor 5 provided in front of the continuous form 1 introduction side of the platen roller 2 to engage and transfer the continuous form 1.

Printing is performed on the continuous form 1 by the print head 4,
The projections (sprockets) of the pin belt 5a of the pin belt tractor 5 provided on the left and right sides of the continuous form 1 engage with the sprocket holes on both sides in the width direction of the continuous form 1, and rotate the pin belt 5a counterclockwise. As a result, the continuous form 1 is conveyed in a tension state toward the platen roller 2.

[Problems to be solved by the invention]

When the continuous form is composed of one sheet, the continuous form 1 is sandwiched between the platen roller 2 and the pinch roller 3 and transported without any problem by the rotation of the platen roller 2. As shown in the partially enlarged view, a plurality of continuous form sheets indicated by sheets 1-1 to 1-5 are stacked, and each layer is stapled relatively easily so as to be peeled off. The innermost layer of paper 1 that is in close contact with the surface of the platen roller 2
In the case of -5, the radius is R1 and the outermost sheet 1-1 has a radius of R2 and is larger than R1. Therefore, a shift between sheets (interlayer) occurs depending on the sheet thickness.

The force causing such a shift is to remove a paper stapler or the like, and the situation due to this is extended to a portion engaged with the pin belt tractor 5, the sprocket hole of the continuous form 1 is shifted, and the sprocket of the pin belt 5a is disengaged. Is not performed, and the continuous form 1 comes off the pin belt tractor 5.

SUMMARY OF THE INVENTION The present invention has been made in view of the above-mentioned conventional problems, and has as its object to provide a printer that prevents the interlayer between continuous forms to be wound around a platen roller from causing a layer shift on the introduction side.

[Means for solving the problem]

In order to achieve the above object, the present invention provides a platen roller 2 that wraps a continuous form 1 formed by stacking a plurality of sheets around a surface and rotates and transfers the continuous form 1, and a continuous form on a continuous form discharge side of the platen roller 2. 1, a pinch roller 3 for pressing the platen roller 1 against the platen roller 2, a print head 4 for printing on a continuous form facing the platen roller 2, and engaging with the continuous form 1 in front of the continuous form introduction side of the platen roller 2; A pin belt tractor 5 for transferring the form 1;

Further, the pin belt tractor 5 is provided on the pin belt tractor 5 so as to be freely opened and closed. When the pin belt tractor 5 is closed, the pin belt tractor 5 presses the innermost layer paper of the continuous form 1 and the outermost layer paper of the continuous form 1 is moved to the frame surface 5b of the pin belt tractor 5. The frame surface 5b is provided with a braking member 6a for applying a brake to the outermost layer paper and bringing a plurality of layers of the continuous form into a pressed state.

[Action]

According to the present invention, by providing the braking means on the frame surface of the pin belt tractor, the braking member comes into contact with the outermost layer paper of the continuous form wound around the platen roller of the continuous form and brakes the outermost layer paper. And a plurality of layers of the continuous form are pressed into contact with each other, so that there is no displacement between the layers of the continuous form at the pin belt tractor portion.

〔Example〕

Hereinafter, the printer according to the present invention will be described in detail with reference to the drawings according to an embodiment based on the configuration summary. The same parts are denoted by the same reference numerals throughout the drawings.

In addition, in the present invention, when a continuous form in which a plurality of sheets are stacked is wound around a platen roller,
The sheet closer to the platen roller is called the innermost sheet of the continuous form, and the sheet outermost with respect to the platen roller is called the outermost sheet.

FIG. 1 shows an embodiment of the present invention. As shown in FIG. 1, the pin belt tractor 5 is provided with an openable and closable continuous form holder 5c that covers the upper part of the continuous form 1.
When closed, the continuous form holder 5c presses the innermost layer paper 1-5 side of the continuous form 1 and runs the outermost layer paper 1-1 on the frame surface 5b (the surface that slidably supports the continuous form 1). Pressing as possible.

The braking means is provided on the frame surface of the pin belt tractor 5.
Either a braking member 6a made of a relatively thin rubber plate is provided on 5b, or a braking member 6a which becomes a friction surface by roughening the frame surface 5b.
One of them is provided.

With the above configuration, continuous form hold 5c
Is closed, the inner surface of the continuous form holder 5c presses the innermost layer paper 1-5 side of the continuous form 1, so that the outermost layer paper 1-1 is formed.
Presses against the braking member 6a so as to be able to travel, applies braking to the outermost layer paper 1-1, and brings a plurality of layers of the continuous form into a pressed state, so that the occurrence of a displacement between the layers of the continuous form at the pin belt tractor portion. Disappears.

As described above, by applying the present embodiment, the occurrence of a situation where the paper stapling is released, the layers are separated, and the continuous form 1 is removed from the pin belt tractor 5 is reliably prevented.

[Effect of the invention]

As described in detail above, according to the printer of the present invention, a plurality of sheets are stacked, and a continuous business form that is relatively easily detachably fastened with a paper stapler between the respective layers is used. In addition, the fixing portion does not come off during printing, causing no interlayer displacement, thereby stabilizing the traveling transfer of the continuous form. Moreover, since the braking member is provided on the frame surface of the pin belt tractor, the structure is easy and the practical effect is extremely remarkable unless the size is increased.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a state in which a rubber plate is adhered to a pin belt tractor used in the printer of the present invention, FIG. 2 is a side view of a conventional printer, and FIG. 3 is a continuous form wound around a platen roller. It is a partial enlarged side view showing the state where it was hung. In the drawings, reference numeral 1 denotes a continuous form in which a plurality of sheets are stacked, 1-1 denotes an outermost sheet, 1-5 denotes an innermost sheet, 2 denotes a platen roller,
Represents a pinch roller, 4 represents a print head, 5 represents a pin belt tractor, 5a represents a pin belt, 5b represents a frame surface, 5c represents a continuous form holder, 6 represents a braking means, and 6a represents a braking member.

Claims (1)

(57) [Scope of request for utility model registration] 1. A platen roller for winding and rotating a continuous form formed by laminating a plurality of sheets on a surface thereof, and a pinch for pressing the continuous form against the platen roller on a continuous form discharge side of the platen roller. A roller, a print head that prints on the continuous form in opposition to the platen roller, a pin belt tractor that engages with the continuous form in front of the continuous form introduction side of the platen roller and transports the continuous form;
The pin belt tractor is provided on the pin belt tractor so as to be openable and closable, and when closed, presses the innermost layer paper of the continuous form, and puts the outermost layer paper of the continuous form on the frame surface of the pin belt tractor. A printer having a continuous form holder pressed in such a manner as to be capable of running, and a braking member for applying a brake to the outermost layer paper and for pressing a plurality of layers of the continuous form in a pressed state, on the frame surface. .