JPS62255172A - Paper guide apparatus in printer - Google Patents

Abstract

PURPOSE:To eliminate a troublesome operation when the paper is set to a printer and to enable a paper to be ensurely carried along a platen, by providing a rotatable second paper guide in the back of a first paper guide coaxially to the platen. CONSTITUTION:A paper 17 is inserted until reaching a contact portion of a platen 1 with a pressure roller 7 on a first paper guide 8. With the input of a paper set command, a second paper guide 10 rotates through a belt 15 and a gear 11 up to the position shown in the figure (b). Thereafter, the platen 1 rotates in a direction of an arrow C to feed the paper 17. Then, the paper 17 is continuously guided to the second paper guide 10 and through a roller 9 on the paper guide 10 further carried until reaching the home position of the paper guide 10 at the leading edge thereof. At this time, a paper guide motor rotates reverse to return the second paper guide 10 to its home position, whereby the paper 17 is completely set.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a paper guide device for setting paper in a printing machine.

[Prior art] Conventionally, 4-
The mother guide device has a platen that feeds the paper, and a pressure roller that can be pressed against and released from the platen. - Consists of a guide and a (-i'?-pail) movable between a position in contact with the platen and a position away from the platen.

Therefore, to set paper in the printing machine using this configuration,
First, manually release the pressure roller from the platen, insert the paper between the platen and the first paper guide, then press the pressure roller against the platen, manually rotate the platen, and finally (-) Setting is completed by bringing the paper into pressure contact with the platen.

[Problems to be Solved by the Invention] In this conventional e/IP guide device, when setting paper, the paper is inserted between the platen and the 4th or 1st guide, and the platen is rotated, so that the platen and this platen are aligned. The paper is fed by the friction between the pressure roller and the pressure roller. However, once the leading edge of the paper passes the paper guide, there is no longer a member to feed the paper along the platen, so the paper is sent away from the platen and is no longer guided between the platen and the platen. .

Normally, the paper is moved between the platen and the platen by hand, and the paper is moved by pressing the (-/4'-pail against the platen), which is a very troublesome task.

SUMMARY OF THE INVENTION Therefore, the present invention aims to eliminate such troublesome work when setting paper and provide a printing machine that can set paper.

[Means for Solving the Problems] The present invention includes a platen for feeding paper, a first arc-shaped easer guide provided below the platen and having a rotatable pressure roller, and a movable carrier. In the paper guide device of a printing machine having a print head attached to The second square/flat guide is located at least approximately in the middle of the platen.

[Function] According to the present invention having such a configuration, the paper is
- Insert between the platen and the first guide along the guide, then move the second 4-part guide to near the first guide, and then rotate the platen fully. By doing this, the paper is fed by the friction between the platen and the pressure roller, and when the leading edge of the paper passes the first par guide, the 20th and par guides that have been moved move to near the first par guide. Because of this, the paper is guided along the second guide as it is. Finally, when the leading edge of the paper reaches the original position of the second paper guide, the second <-A- guide is returned to its original position, and the paper setting is completed.

[Example] The details of the invention will now be described with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 denotes a platen for feeding paper, and this platen 1 is rotatably attached to frames 2 on both sides. The platen 1 is driven by a platen motor 3 via gears A and B. Further, a carrier 5 to which a print head 4 is attached is provided parallel to the platen 1 and is slidably held by a carrier shaft 6. Below the platen 1, a first 4-9 guide 8 having a freely rotatable pressure roller 7 is attached in an arc shape by a platen motor, and the pressure roller 7 is manually pressed against the platen 1. It is possible to release the pressure welding.

Further, above the platen 1, as shown in FIG. 3, there is a second guide 10 having a shape along the outer periphery of the platen 1 and equipped with a roller 9 that rotates when it comes into contact with the platen 1. As shown in FIG. 4, it is rotatably provided coaxially with the rotating shaft 1a of the platen 10. - A gear 11 is provided at one end of the guide 10 for this second paper, and this gear 11 is connected to the second paper guide 1.
The rotation of the gear 11 causes the second
The d-no-j- of the id 10 is also rotated. Also, a second (-) 9- is provided with a notch 12 at the other end of the id 10.
This notch 12 is located at the home position of the print head 4), the second (-) or - guide 10.
This is so that when the paper rotates, it can rotate to the vicinity of the first paper guide without being hindered by the print head 4 in the home position.

Also, the rotating tip 16 of the second (-par guide 10)
The paper 17 fed from the (-/4'-guide 8) is bent slightly outward so as to guide the paper 17 sent out from the (-/4'-) guide 8 between the platen 1 and the second d-/4'-guide 10. The paper guide has approximately the same length as the platen 1.

A paper drive motor 13 for driving the second guide 10 is attached to the frame 2;
The 6-output shaft 14 of the vane 9-guide motor 13 and the gear 11 of the second paper guide 10 are connected by a belt 15.

FIG. 5 is a block diagram showing the internal configuration of the printer, in which signals from an external computer (not shown) are taken into the CPU 19 via the interface 18, and each signal from the CPU J 9 is processed. Each driver is controlled to drive the carrier motor 20. Platen motor 2
1. It rotates the paper guide motor 22, etc.

In this embodiment with such a configuration, when setting the paper 17 in the printer, the paper 17 is inserted up to the contact point between the ZOLATE:/J and the pressure roller 7 of the first paper guide 8. When a paper setting command is input from an external computer, the carrier 5 with the print head 4 attached moves to the home position and prepares for printing. After that, the paper is transferred to the second A-guide 10 via the output shaft 14, belt 15, and gear 11.
is rotated and moved to the position shown in FIG. 2(b).

At this time, since a notch 12 is provided in the part of the second paper guide 10 corresponding to the home position (left end) of the print head 4, the rotating tip 16 of the second paper guide 10 is connected to the print head. 4, it rotates to the vicinity of the first Eno mother guide 8. Next, the platen 1 is moved by the platen driving motor 3 as shown in FIG. 2(b).
The paper 17 is rotated in the direction of arrow C, and the paper 17 is conveyed by friction with the pressure roller 7.

The paper 17 is then guided by the rotation of the platen 1 to the second E/'P-guide 10 and then to the second E/'P-guide 10. −
is further conveyed through the rollers 9 of the paper 10, and the paper 1
When the tip of the paper 17 reaches the original position of the second paper guide 10, the d-yf-guide motor 13 rotates in the opposite direction, moves the second paper guide 10 to the original position, and moves the paper 17 to the original position.
The set is completed. The above operation is shown in a flowchart as shown in FIG.

As described above, since the second paper having a shape along the outer circumference of the platen 1 is rotatably provided on the same axis as the platen 1, the paper 17 is moved to the second paper guide 1.
The paper is fed to the inside of the platen 1, and is conveyed to the upper part of the platen 1 in a state where it is wrapped around the platen 1, thereby completing the ceratracing of the paper.

In this embodiment, the platen 1 and the second paper 9-guide 10 are rotated or moved by the motors 3 and 13, respectively.
It is also possible to perform each step manually without using .

[Effects of the Invention] As detailed above and as follows, according to the present invention, a rotatable second arm guide is provided coaxially with the platen after the first four-part guide. This has the effect of guiding the paper along a platen and reliably transporting the paper without any troublesome work when setting the paper in a printing machine.

[Brief explanation of drawings]

The figures show an embodiment of the present invention, in which Fig. 1 is a perspective view showing the external appearance, Figs. 2(a) and (b) are side views showing the relationship between the platen and the platen, and Fig. 3 is a FIG. 4 is a partial cross-sectional view showing the vicinity of the gear of the second paper guide, FIG. 5 is a control block diagram, and FIG.
The figure is a flowchart showing the process when setting paper in a printing machine. DESCRIPTION OF SYMBOLS 1...Platen, 4...Print head, 5...Carrier, 7...Pressure roller, 8...First paper guide 17...Paper. Applicant's agent Patent attorney Takehiko Suzue = 10-

Claims (1)

[Claims] A platen for feeding paper, a pressure roller that presses against the lower part of the platen, a first arc-shaped paper guide disposed along the lower surface of the platen, and a print head attached to a movable carrier. In the paper guide device for a printing machine, a second paper guide rotatably supported on the shaft of the platen is disposed above the platen, and when paper is set, the second paper guide is moved to the upper side of the platen. A paper guide device for a printing machine, characterized in that it is arranged close to a first paper guide.