JPH0692182B2 - Printer - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial field of application] The present invention prints on fanfold paper in which a plurality of sheets are bound by gathering and folded in a zigzag pattern, and some sheets are for recording, for example. The present invention relates to a printer which is wound on a take-up reel, and the other part is led out to the outside and is broken at perforations to be delivered to a customer.

[Problems to be solved by conventional technology and invention]

For example, when issuing receipts and journals with a cash register printer, use fanfold paper in which multiple sheets are bound together by gathering and folded in a zigzag pattern, and after printing, print and deliver Since the printing can be performed only once, the number of print heads required is one, which simplifies the structure of the printer and also makes the printer small. In this case, the recording sheet is taken up on the take-up reel, and the sheet for customer delivery is pulled out to the outside and is torn at the perforations, but the fanfold paper has creases. There is a risk that the parts for delivery to the customer and those for delivery to the customer will not be smoothly separated, and the portion for the customer to be delivered will also be drawn in the direction of the take-up reel.

The present invention has been made to solve such a problem, and an object of the present invention is to prevent a sheet led out from an outlet of an opening / closing cover from being drawn to a take-up reel side, and to prevent a gap between a platen and a print head. It is an object of the present invention to provide a printer capable of smoothly separating a fanfold sheet that has passed through a sheet into a sheet on the discharge side and a sheet on the winding side.

[Means for solving problems]

To achieve the above object, a printer of the present invention includes a housing having a top cover portion, a platen provided in the housing, a print head provided in the housing facing the platen, A paper feed mechanism that feeds fanfold paper consisting of two sheets, which are bound together at their both side edges by gathering, between the print head and the platen from below, and is rotatably attached to the top cover part of the housing. An opening / closing cover having a separating portion that separates the sheet of fanfold paper that has passed between the platen and the print head, and an outlet that guides one sheet separated by the separating portion to the outside; A take-up reel that winds the other sheet that is provided and separated by the separation section at a position behind the platen, and a guide reel that is attached to the opening / closing cover and is guided from the outlet. And a cutter for cutting the one of the sheets that has been cut, the separation section is provided close to the upper edge of the platen, and the sheet wound on the take-up reel is placed on the platen side. An inclined portion to be bent is provided on the upper edge of the platen.

〔Example〕

 An example of the present invention will be described below.

Figure 1 shows a cash register (EC
The schematic configuration of R) is shown with a partial cross section, and
A print head 2 and a platen 3 are disposed inside the printer in a substantially horizontal direction. A stocker 5 for accommodating the fanfold paper 4 is provided behind the platen 3, and a take-up reel 6 is provided above the stocker 5.
As shown in FIG. 2, the fanfold paper 4 includes two sheets (receipt paper 8a for customer delivery, journal paper 8b for recording) having sprocket holes 7 at both edges, and gathers both edges 9 The perforations 10 are provided at regular intervals and are folded in a zigzag shape at the perforations 10 and stored in the stocker 5.

A sprocket wheel 11 as a paper feeding mechanism is provided below the platen 3, and the wheel 11 is rotationally driven by a motor (not shown).

Reference numeral 12 in the figure denotes an opening / closing cover that closes the opening provided in the top cover portion 1a of the housing 1. By opening the opening / closing cover 12, the fanfold paper 4 is replenished or wound up through the opening. The reel 6 can be handled. Further, the edge portion of the opening of the top cover 1a is brought close to the upper surface of the print head 2, and that portion is used as the paper guide 13. The lower surface of the paper guide 13 is located below the upper end 3a of the platen 3.

FIG. 3 is an enlarged view showing the periphery of the print head 2 and the platen 3. The opening / closing cover 12 is provided with an outlet 14 at a position above the print head 2 and the platen 3. An edge portion 15 of the outlet 14 on the print head 2 side is close to the upper surface of the paper guide 13, and a cutter 16 is provided on the inner surface. Further, the edge portion of the outlet 14 on the platen 3 side is a separating portion 17 which is close to the upper end 3 a of the platen 3.

In the above configuration, in order to print on the fanfold paper 4, the opening / closing cover 12 is opened, and one end of the fanfold paper 40 is first pulled out and wound around the sprocket wheel 11. Then, through the space between the print head 2 and the platen 3,
The receipt paper 8a is advanced straight as it is and led out to the outside through the outlet 14, and the journal paper 8b is set to the platen 3
It extends to the rear of the platen 3 through the space between the upper end 3a and the separating portion 17 and is fixed to the take-up reel 6.

When the opening / closing cover 12 is closed and the printing operation is started in this manner, the fanfold paper 4 between the print head 2 and the platen 3 is fed upward by the feeding force of the sprocket wheel 11. At this time, when the bent portion of the perforations 10 of the fanfold paper 4 is located on the print head 2 side, the print head 2 and the paper guide 13 are located at the perforations 10.
Tries to be drawn in between. However, since the journal paper 8b is pulled by the rotational force of the take-up reel 6 and the receipt paper 8a and the journal paper 8b are still connected by the gathering 9, the pulling force acting on the journal paper 8b is applied to the receipt paper 8a. Print head 2
It is not drawn into the space between the paper guide 13 and the paper guide 13.
On the contrary, when the perforation of the perforation 10 is located on the platen 3 side, the perforation 10 tends to be drawn into the gap between the upper end 3a of the platen 3 and the separating portion 17. However, since the lower end of the separating portion 17 approaches the upper end 3a of the platen 3 and the gap therebetween is extremely small, the receipt paper 8a and the journal paper 8b are not drawn into the above gap.

Therefore, the fanfold paper after printing is perforated.
Even if there is a curl in 10 places, the gathering 9 is peeled off in the separating portion 16 and divided into the receipt paper 8a and the journal paper 8b, the receipt paper 8a is smoothly drawn out from the outlet 14, and the journal paper 8b is It will be wound up on the take-up reel 6. Further, in the above-described embodiment of the present invention, since the upper edge 3a of the platen 3 is an inclined surface, the journal paper 8b wound on the take-up reel 6 is bent at the upper edge 3a of the platen 3 toward the platen side. The fanfold paper 4 that has passed between the print head 2 and the platen 3 can be smoothly separated by the separating unit 17 into the receipt paper 8a for customer delivery and the journal paper 8b for recording.

〔The invention's effect〕

As described above in detail, according to the present invention, the sheet led out from the outlet of the opening / closing cover is not drawn to the take-up reel side, and the fanfold sheet passing between the platen and the print head is discharged. It is possible to smoothly separate the sheet on the side and the sheet on the winding side.

[Brief description of drawings]

FIG. 1 is a schematic cross-sectional view of a printer showing an embodiment of the present invention, FIG. 2 is a perspective view of fanfold paper, and FIG. 3 is a partially enlarged view of FIG. 1 ... Housing, 1a ... Top cover part, 2 ... Print head, 3 ... Platen, 4 ... Fanfold paper, 6 ...
... Take-up reel, 8a ... Receipt paper, 8b ... Journal paper, 10 ... Perforation, 11 ... Sprocket wheel (paper feed mechanism), 12 ... Open / close cover, 14 ... Outlet, 17
...... Separation part.

Claims (1)

[Claims] 1. A housing having a top cover portion, a platen provided in the housing, a print head provided in the housing facing the platen, and between the print head and the platen. A paper feed mechanism for feeding a fanfold paper composed of two sheets whose both edges are bound together by gathering from below, and a platen and a print head rotatably attached to a top cover portion of the casing. An opening / closing cover having a separating portion for separating the sheet of fanfold paper that has passed through the space and an outlet for leading out one of the sheets separated by the separating portion to the outside, and a cover provided in the housing and separated by the separating portion. And a take-up reel for winding the other sheet at the rear position of the platen, and cutting the one sheet attached to the opening / closing cover and led out from the outlet. A cutter for cutting the sheet, wherein the separating section is provided close to the upper edge of the platen, and an inclined section for bending the sheet wound on the take-up reel toward the platen is provided at the upper edge of the platen. A printer characterized by being provided at the edge.