JPH0365362A - Front side and rear side printing device for roll paper - Google Patents

Abstract

PURPOSE:To permit the front side and rear side printing of a roll paper with simple set operation by a method wherein the terminal end of the roll paper, reeled around a first reeling core after the front side thereof is printed, is pulled out and the rear side of the same is printed by a printing mechanism while reeling the same around a second reeling core provided at a different position. CONSTITUTION:When printing on the rear side of a roll paper, reeled around a first reeling core 8, is desired, the terminal end of the roll paper 2, reeled around the reeling core 8, is pulled out and is reeled around a second reeling core 10 through a route same as the front side printing of the same, which is started from a guide roller 3. In this case, the turning direction of the reeling core 8 becomes the direction of an arrow sign B in a diagram, which is reverse to a reeling direction A, and the printing direction of the paper becomes the direction of printing the rear side of the same paper in a printing mechanism 5. The reeling direction of the second reeling core 10 becomes the direction of an arrow sign C. According to this method, the finish of the printing on the front side of the roll paper 2 can be known by the output of a paper sensor 9 whereby printing on the rear side of the same paper may be switched by the same setting manner as so far without effecting any attaching and detaching operations of the first reeling core 8.

Description

[Detailed Description of the Invention] [Summary] This invention relates to a device for setting roll paper such as journal paper built into a printing device, and in particular to a device for printing both sides of a roll paper, enabling printing on both sides of a roll paper with a simple setting operation. The purpose is to provide a roll paper front and back printing device that prints the roll paper loaded on the loading core by a guide roller, a printing mechanism, a guide roller,
In a device that prints via a path consisting of a discharge roller and winds the roll paper onto a first winding core, the roll paper discharged from the discharge roller is placed at a position different from the first winding core. A second winding core capable of winding is provided, a terminal end of the roll paper wound on the first winding core is pulled out, and the paper is wound on the second winding core via the path. However, by printing with the printing mechanism, front and back printing is possible.

[Industrial application field]

The present invention relates to a roll paper setting device such as a journal paper built into a printing device, and more particularly to a roll paper front and back printing device.

[Conventional technology]

FIG. 2 shows a block diagram of the main parts of a conventional roll paper winding device. In the figure, reference numeral 1 denotes a loading core made of synthetic resin or the like, into which unprinted roll paper (for example, journal paper, etc.) 2 is wound and loaded. 3 is a part of a paper feeding mechanism that guides the roll paper 2 in the direction of the printing mechanism 5. A guide roller 1.4 is a paper sensor for detecting the end of the roller paper, and for example, a photo interrupter or a photo sensor is used. It will be done. 6 is a guide roller that guides the printed roll paper, 7 is a discharge roller that discharges the roll paper in the direction of the first winding core 8, and 8 is a first winding roller that winds the discharged roll paper in the direction of arrow A. The winding core 9 is composed of a paper sensor for detecting the end of the roller paper.If the roll paper sent out from the printing mechanism 5 is copying type journal paper, etc., it is used as a copy journal paper. The rolled paper is wound onto the first winding core 8 via the guide roller 6 and the discharge roller 7, and the roll paper other than the copy is discharged out of the apparatus by a paper feeding mechanism (not shown).

The roll paper 2 loaded on the loading core 1 is passed through a guide roller 3, a printing mechanism 5. When the printed roll paper 2 is wound onto the first winding core 8 via the path consisting of the guide roller 6 and the discharge roller 7, the leading end of the roll paper 2 is brought into contact with the guide roller 3. Later, a technique has been devised in which the paper is automatically fed to the first winding core 8 by an automatic safety +- operation, but the explanation is omitted since it is not directly related to the present invention. When the paper sensor 4 detects the end of the paper, the detection signal drives a winding drive unit (not shown) at high speed to quickly wind the paper onto the first winding core 8. Once the terminal end is detected, the detection signal is used to display the completion of winding of the roller paper on a display section (not shown).

[Problem to be solved by the invention]

In such a roll paper winding and setting device, when it is desired to print the back side of the roll paper wound on the first winding core 8, the first winding core 8 and the empty loading core are used. It is necessary to replace the position of the first winding core 8 and to reverse the axial direction of the first winding core 8. This operation of setting the roll paper for backside printing has the disadvantage of being time-consuming.

The present invention has been made in view of the above-mentioned drawbacks of the conventional art, and aims to provide a 0-rule front and back printing device that enables front and back printing of roll paper with a simple setting operation.

[Means to solve the problem]

FIG. 1 shows a block diagram of essential parts of the present invention. The roll paper 2 loaded on the loading core 1 is moved to the guide roller 3. Printing mechanism 5. Information gate/
-La 6. Printing is performed via a path consisting of a discharge roller 7,
In the device for winding the printed roll paper onto a first winding core 8, the roll paper 2 discharged from the discharge roller 7 can be wound at a position different from the first winding core 8. A second winding core 10 is provided, and the terminal end of the raw paper 2 wound around the first winding core 8 is pulled out and passed through the path to the second winding core 10. The printing mechanism 5 prints while winding up, thereby enabling 14 front and back printing.

[For production]

When the roll paper loaded on the loading core 1 is wound onto the first winding core via the path of the guide roller 3, the printing mechanism 5, the guide [1-roller 6, and the discharge roller 7], the front side of the roll paper is When you rub something that can be printed, it will appear at a different position from the first winding core 8.
and a second winding core 10 is provided at a position where the raw paper 2 discharged from the discharge port - rough can be wound up;
The terminal end of the raw paper 2 wound on the winding core 8 is pulled out and printed by the printing mechanism 5 while being wound around the second winding core 10 via the same route as the above-mentioned route. This makes it possible to print on the back side of the roll paper, and in this case 1. There is an advantage that it is not necessary to attach or detach the first winding core 8 for printing on the back side.

〔Example〕

Embodiments of the present invention will be described in detail below with reference to the drawings.

Note that, in order to make the explanation of the configuration and operation easier to understand, the same parts are given the same reference numerals throughout all the figures, and repeated explanation thereof will be omitted.

FIG. 1 shows a block diagram of essential parts of the present invention. In the figure, 10
is a second winding core, which is provided at a position different from the first winding core 8 and at a position where the roll paper 2 discharged from the discharge roller 7 can be wound. Reference numeral 11 denotes a paper sensor for detecting the end of the roll paper 2, and its function is the same as that of the paper sensor 9 corresponding to the first winding core 8.

The roll paper 2 loaded on the loading core l is fed to the printing mechanism 5 via the guide roller 3, and after being printed on the front side of the roll paper 2 by the printing mechanism 5, it is sent to the discharge roller via the guide roller 6. 7 to the first winding core 8 direction. The discharged roll paper 2 is moved by the arrow A by the first winding core 8.
It is wound in the direction.

If you want to print the back side of the roll paper wound on the first winding core 8, pull out the end of the roll paper 2 wound on the first winding core 8 and follow the same path as described above starting from the guide roller 3. It is wound onto the second winding core 10 via the route. In this case, the rotation direction of the first winding core 8 is in the direction of arrow B, which is opposite to the winding direction A, and is in the direction of printing on the back side of the printing m core 5. The winding direction of the second winding core 10 is the direction of arrow C. As a result, the completion of printing on the front side of the roll paper 2 can be known from the output of the paper sensor 9, and when printing is subsequently performed on the back side of the roll paper 2, it is not necessary to attach or detach the first winding core 8, which is conventional. You can switch to printing on the back side in roughly the same way as a cent.

In the above explanation, the roll paper 2 relative to the guide roller 3
It goes without saying that if a paper guide mechanism is required in response to a difference in the insertion angle of the roll paper 2 or a difference in the ejection angle of the roll paper 2 ejected from the ejection roller, a paper guide mechanism will be provided as appropriate.

〔Effect of the invention〕

As is clear from the above description, according to the present invention, it is possible to easily switch printing between the front and back sides of a roll paper, and there is an economical effect by using both sides of the roll paper.

[Brief explanation of drawings]

FIG. 1 is a block diagram of the main parts of the present invention, and FIG. 2 is a block diagram of the main parts of a conventional roll paper winding device. In FIG. 1, 1 is a loading core, 2 is a roll paper, 3 and 6 are guide rollers, 5 is a printing mechanism, 7 is a discharge roller, and 8 is a first
and 10 indicate a second winding core. Hand rate 9g＾Mochi so end A゛Leap figure 1! s 2 diagram

Claims (1)

[Claims] The roll paper (2) loaded on the loading core (1) is passed through a path consisting of a guide roller (3), a printing mechanism (5), a guide roller (6), and an ejection roller (7). In the apparatus for printing the roll paper and winding the roll paper onto a first winding core (8), the roll paper discharged from the discharge roller is
A second winding core (10) that can be wound at a position different from the winding core is provided, and the terminal end of the roll paper wound on the first winding core is pulled out and passed through the path. 1. A device for printing both sides of a roll paper, characterized in that printing is performed by the printing mechanism while winding the paper onto the second winding core, thereby making it possible to print on both sides.