JPS6374675A - Printer paper take-up mechanism - Google Patents

Abstract

PURPOSE:To provide a non-power supply type roll paper take-up mechanism of simple structure by providing a take-up roller which permits vertically movable roll paper printed under its own weight or by spring to move under close contact with a rotational transmission roller and takes up said roller paper. CONSTITUTION:A take-up roller 6 turns in an arrow D direction with a winding force by rotation of a feeder roller 3 following the feed-out action of a platen 12 and the subsequent rotation of a rotational transmission roller 5 contacting under pressure roll paper 4a wound around the feeder roller 3 in an arrow C direction, with a rotational force transmitted to the take-up roller 6 contacting the rotational transmission roller 5 under pressure. The pressure contacting force inflicted to these two points is generated under the own weight of the rotational transmission roller 5 and take-up roller 6 which are movable in a vertical direction. If the force is insufficient, a spring 6a is energized to increase the force.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a right-hand picking mechanism for a printer using roll paper.

[Prior Art] Recently, portable data terminals have been developed that manually transmit data to 11 destinations using telephone lines or the like. In this case, the human data is processed by a central processing unit, but a roll paper printer is attached to the terminal device to print out the data for evidence.

[Problems to be solved] Conventionally, in roll paper printers, a motor-driven mechanism has been installed to wind up the roll paper, but this not only makes the mechanism complicated, but also makes it difficult to use for portable devices. The disadvantage of printers is that they are battery-powered, and their power consumption is quite large. Therefore, an effective winding force that does not use a motor is desirable.

[Objective 1 of the Invention] [Objective 1] The present invention provides a simple and easy-to-use power-free roll paper winding mechanism in a printer using roll paper.

[L stage for solving the problem] In this invention, a rotation transmission roller that is vertically movable and rotates while being pressed against the roll paper is provided as a part of the feeding mechanism for the roll paper for printing. Further, the printed roll paper is moved by pressing the roll paper against the rotation transmission roller in six perpendicular directions by its own weight or a spring, and the roll paper is wound up. It is equipped with rollers.

[Operation] In a printer that uses roll paper, every time one line of data is printed, the platen rotates to feed the line feed and pulls out the roll paper, and the roller for feeding out the roll paper for printing rotates. The rotation transmission roller installed at the top of this roller is in pressure contact with the roll paper of the feeding roller due to the force applied by the take-up roller described in section 1 and π, so it rotates due to friction. . Further, above the feed roller, a take-up roller L presses against the printed roll paper using its own weight or the force of a spring, and rotates due to friction, thereby winding up the roll paper. It is.

In the following 1-, the feeding and winding of the roll paper are both dependent on the rotational force of the platen, that is, they are operated without a power source.

Embodiment FIGS. 1(a) and 1(b) are eastward sectional views of an embodiment of a printer paper winding mechanism according to the present invention. In Figure (a), a frame 2 is fixedly provided in a part of a printer 1, and a notch 2a is provided in a side plate of the frame 2, and a feed roller 3 is inserted into the notch 2a and supported in a freely rotatable manner. In addition, the frame 2 is provided with a notch 2b above the superposition of the feed roller 3, and a rotation transmission roller 5 and a winding roller 6 are inserted therein and onto the rotation transmission roller 5, respectively. Support in a free and vertically movable state. That is, the delivery roller 3 and the rotation transmission roller 5, and the rotation transmission roller 5 and the storage roller 6, are supported so as to contact and rotate, respectively. However, if necessary, the right-handling roller 6 is urged in the opposite direction by a spring 6a, as shown in FIG. 6(b).

Next, at the top of the printer 1, the feed roller 3 is
In addition, the roll paper 4a wound around the feed roller 3
A guide plate 8 is provided to press and guide the roller at both ends, and a roller support 7 is attached to the guide plate 8 at a certain angle. Furthermore, three idle rollers 9 are attached to the support 7.
10 and 11 are rotatably supported on one mountain of 1'. The mounting positions of the three guide rollers 9, 10 and 11 are such that the roll paper 4b fed out from the feeding roller 3 first passes through the dry side of the guide roller 9 and descends almost vertically.
It contacts the side surface of the guide roller 10 and descends.

The rolled paper 4b that has fallen down passes through the printing surface of the platen 12 of the printer 1, contacts the do side thereof, rotates, contacts the do side of the guide roller 11, and is arranged so as to be oriented in the I direction. There is.

(2) The operation of feeding out and winding up the roll paper 4 in the described mechanism will be explained with reference to FIGS. 2(a) and (b).

Figure (a) shows the state of the roll paper 4 at the beginning of use.

The roll paper 4a wound around the feed roller 3 is sequentially pulled out by the rotation of the platen 12 as the printer 1 rotates, is guided by guide rollers 9 and 10, and printed on the printing surface of the platen 12. Next, the roll paper 4b is guided by the guide roller it, moves toward 1° as shown by the arrow B, and is wound up by the take-up roller 6.

In this case, the rotation and winding force of the winding roller 6 is such that the feeding roller 3 rotates in the direction of arrow A due to the drawing by the platen 12 as shown in 1-, and is in pressure contact with the roll paper 4a wound thereon. The rotation transmission roller 5 rotates in the direction of arrow C due to frictional force, and the rotational force is further transmitted to the take-up roller 6 that is in pressure contact with the rotation transmission roller 5, causing it to rotate in the direction of arrow l). . Note that the pressure force at these two locations is generated by their own weight when the rotation transmission roller 5 and the take-up roller 6 are moved perpendicularly to each other, but if the force is insufficient, , is biased by a spring 6a shown in FIG. 1(b) to increase the force.

In addition, in the case of l- below, the roll paper 4a of the right-handling roller 3
and the roll paper 4b moving in the direction of arrow B come into contact at point p, but since both are moving in the same direction and at the same speed, )? No force loss occurs due to rubbing or the like.

FIG. 2(b) shows the state in which the roll paper 4 has reached the end, the roll paper 4C is fully wound around the take-up roller 6, and the rotation transmission roller 5 is driven to the lowest position. It's raining.

[Effects of the Invention] As is clear from the explanation in 1. below, the printer paper winding mechanism according to the present invention not only feeds out the roll paper from the feed roller, but also winds up the printed roll paper. Both are non-power-supply methods that utilize the feeding force of the printer's platen. Compared to motor-driven systems, this method has a significantly simpler mechanism and is applicable to portable printers powered by dry batteries. When doing so, power consumption can be significantly reduced, and the effect is significant.

[Brief explanation of the drawing]

FIGS. 1(a) and 1(b) are vertical sectional views of the structure of an embodiment of the printer paper winding mechanism according to the present invention;
Figures 2(a) and (b) are similar to Figures 1(a) and (b).
) is a vertical cross-sectional view illustrating the operation of feeding out the roll paper and removing it by filtration. ■...Printer 1.2...Frame, 2a, 2b.
...Notch, 3...Feeding roller, 4, 4a
, 4b, 4c... Roll paper, 5... Rotation transmission roller, 6... Winding roller, 7... Roller support, 8... Guide bar, 9. 10. 11... Guide roller, 12... Platen.

Claims (1)

[Claims] In a printer that uses roll paper, a rotation transmission roller that is vertically movable and rotates in pressure contact with the roll paper is provided above the roll paper feeding mechanism for printing, and a rotation transmission roller that is vertically movable and rotates in pressure contact with the roll paper. The printed roll paper is movable in the direction and moved by its own weight or a spring by pressing against the rotation transmission roller,
A printer paper winding mechanism comprising a winding roller that winds up the roll paper.