JPH01114471A - Set guide device for roll paper in recorder - Google Patents

Abstract

PURPOSE:To prevent a guide plate from coming in contact with a recording paper liable to occur with the decrease in the amount of the recording paper, and perform stabilized paper feeding, by enabling a set guide member to be turned to a point not coming in contact with a recording paper to be fed at the time when the diameter of the roll of said paper becomes the minimum from the set position of said paper. CONSTITUTION:The main body 3a of a guide plate 3 is fixed freely turnable with one axis of rotation of a pair of paper feed rollers 8 as a fulcrum, and is made freely movable between a set position II and a refuge bay I against the resiliency of a spring 4, with a cam 5 in contact on its rear side. The refuge bay is positioned at a point where the main body does not come in contact with a recording paper drawn from the roll 1 at the time when the diameter reaches its minimum value after a continued consumption of the paper. The roll paper 1 is aligned in position by the main body 3a, and the running of the paper is detected by a sensor 7, the roller is rotated and the paper is paid out. When the paper is detected by a sensor 10 located at the outlet port side of the roller 8, the rotation of the roller 8 is stopped, causing the turning of the cam 5, and the main body 3a is retracted to the refuge bay I.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a set guide device for positioning a roll of recording paper in the width direction with respect to a printed portion in a printer such as an inkjet printer or a recording device such as a facsimile machine. It is something.

[Background of the Invention] Generally, in printers such as inkjet printers that use roll-form recording paper (hereinafter referred to as roll paper), a set guide plate for positioning the roll paper in the width direction with respect to the printing part is attached to the printing part. It is installed on the front side.

This set guide plate is provided with a reference mark or reference abutment plate for aligning one side of the roll paper, and while aligning the roll paper with the reference mark or reference abutment plate, the leading end is sandwiched between the paper feed rollers. By setting the recording paper, the recording paper is set.

However, in the above conventional example, the diameter of the roll paper is different when the roll paper is new and when there is little remaining, and the pull-out position with respect to the set guide plate is therefore greatly different. The rollers gradually come into contact with the edges and the resulting load gradually increases, causing the rollers to slip, resulting in a difference in the amount of feed each time, which has the disadvantage of affecting images such as characters to be recorded.

[Purpose of the Invention] The present invention has been made in order to eliminate such conventional drawbacks, and is capable of preventing an increase in paper feeding load due to contact with the set guide plate even if the pull-out position of the roll paper changes. hand,
It is an object of the present invention to provide a set guide device for rolled recording paper that can reliably feed the rolled paper.

[Summary of the Invention] The gist for achieving the object of the present invention is to provide a method for recording on the recording means during a paper feeding path that feeds the roll-shaped recording paper stored in the main body of the recording apparatus to the recording means. In a roll paper set guide device of a recording apparatus that is provided with a set guide member that aligns the position of paper in the width direction, recording paper is fed when the recording paper has a minimum diameter from a set position where the set guide member aligns the paper. A roll paper set kite device for a recording device is characterized in that it is configured to be rotatable to a position where it does not come into contact with paper.

[Embodiments of the Invention] The present invention will be described in detail below based on embodiments shown in the drawings.

Embodiment 1 FIG. 1 shows a schematic side view of Embodiment 1 of a printer that can effectively implement the present invention.

In the figure, 1 is a roll paper, 2 is a rotating shaft non-rotatably inserted into the inner diameter part 1a of the roll paper 1, and the width of the roll paper housing 18 attached to the bottom of the printer main body 20 via an Accuride rail 17. Both ends of the rotating shaft 2 are rotatably supported at both ends in the direction, respectively, so that the roll paper 1 is accommodated in the roll paper housing 18. Roll paper 1
To store the paper into the roll paper housing 18, first open the exterior cover 19, then pull the roll paper housing 18 out of the printer main body 20 via the Accuride rail 17, and then insert the roll paper housing 18 into the printer main body 20. When the printer is pushed into the set position, the power switch 15 is turned on and the printer is ready for operation.

Reference numeral 8 designates a pair of paper feed rollers that are in contact with each other, and the hook portions 3b, which are respectively extended from the parts so as to be rotationally driven via a drive means (not shown), are attached to a bearing shaft 8a of one of the paper feed rollers 8. 16, and the guide plate main body 3a can rotate about the rotation @8a as a fulcrum irrespective of the rotation of the paper feed roller 8. The guide plate main body 3a is biased toward the inner diameter side of the roll paper 1 via a spring 4. Further, on the back side of the guide plate main body 3a, a cam 5 is rotatably driven by a drive shaft 6 of a drive means (not shown).
contacts, and in a half turn, the guide plate main body 3a is rotated against the spring 4 to the set position I shown by the two-dot chain line in the figure, and in the next half turn, it is moved to the retracted position I! shown in the solid line in the figure. It is designed to be retracted by the spring force of spring 4, and this retracted position! I is the paper feed entrance side of the pair of paper feed rollers 8 and the inner diameter portion 1 of the roll paper 1
It is positioned inside the line that connects the outer surface of a. Then, when setting the roll paper 1, the cam 5 is driven so as to position the guide plate main body 3a at the setting position II.

A 10th paper detection sensor 7 detects the presence or absence of the roll paper 1 in a contact or non-contact manner, and is attached to the back side of the guide plate main body 3a. When the main body 3a positions the roll paper 1 and pulls it out toward the paper feed roller 8, the roll paper 1
is detected and turned on, the other paper feed roller 8 covered by the cover 9 is driven to rotate, and the leading end of the roll paper 1 is inserted therein, thereby feeding the roll paper 1. 10
The 20th sensor has the same structure as the 10th paper detection sensor 7 described above.
- A roll paper detection sensor is provided on the exit side of the paper feed roller 8, and turns on when it detects the leading edge of the roll paper 1 fed from the paper feed roller 8 toward the cutter 11, and starts driving the paper feed roller 8. make it stop. In addition, this 20th-rule paper detection sensor 1
0 is turned on, cam iF1. I16 rotates half a turn to rotate the guide plate main body 3a from the set position I to the retracted position 11.

12 is a transport roller, 13 is a recording head, 14 is a high-precision roller, and 10' is a 30th roll paper detection sensor. After inserting the leading edge of the roll paper 1 into the paper feed roller 8, turn on a switch (not shown). The paper feed roller 8, conveyance roller 12, and high-precision roller 14 are driven to move the roll paper 1 to the recording head 13.
The paper is ejected from the high-precision roller 14 through the
When the zero-roll paper detection sensor 10' detects it, it turns on and temporarily stops the drive of the paper feed roller 8, conveyance roller 12, and high-precision roller 14, and drives the cutter 11 to cut the beginning of winding of the roll paper 1. disconnect. When the roll paper 1 is cut at the beginning of winding, the paper feed roller 8
The transport roller 12 and the high-precision roller 14 are driven to discharge the cut roll paper at the beginning of the roll out of the printer, and the exterior cover 19 is closed, thereby completing the setting of the roll paper.

Then, after setting the roll paper, turn on a copy start button (not shown), and the roll paper 1 will be transferred to the paper feed roller 8,
When the paper is fed by the transport roller 12 and the high-precision roller 14 and the leading edge of the roll paper is detected by the 30th-rule paper detection sensor 10°, the drive of the paper feed roller 8, the transport roller 12, and the high-precision roller 14 is stopped. Characters and the like are recorded on roll paper by a recording head 13 having the width of the head, and after recording, the roll paper 1 is fed by a high-precision roller 14 at a rate of 2 l.

That is, according to this embodiment, when the setting of the roll paper 1 is completed, the loading guide plate 3 is moved to the setting position 1 by the drive of the cam 5! Since the roll paper 1 is retracted to the retraction position I by the spring force of the spring 4 to prevent the roll paper 1 from coming into contact with the set guide plate 3 between the maximum and minimum winding diameter of the roll paper 1, the paper feed of the roll paper 1 is prevented. There is no increase in load, and the amount of feed of the roll paper 1 by the high-precision roller 14 each time during recording can be stabilized.

Example 2 FIG. 2 shows a schematic diagram of the second embodiment.

In this embodiment, the set guide plate 3 is configured to rotate according to the change in the winding diameter of the roll paper 1, and has a driven roller 34 at one end that contacts the outer surface of the roll paper 1.
A driven arm 33 having a long hole 35 on the other end side is attached to the printer body via the driven arm shaft 31, and a slide bin 32 provided on the guide plate main body 3a of the set guide plate 3 is engaged with the long hole 35. ing.

That is, since the rotational force in the direction of arrow a is applied to the driven arm 33 by the guide plate main body 3a which receives the spring force of the spring 4, as the winding diameter of the roll paper 1 becomes smaller, the driven arm 33 comes into contact with the outer surface of the roll paper 1. The driven roller 34 moves in the direction of arrow a, the driven arm 33 rotates in the direction of arrow a, and the slide pin 32 moves in the elongated hole 35, so that the guide plate main body 3a
moves in the direction of the arrow, and the roll paper 1 and guide plate main body 3
This will prevent contact with a.

Example 3 FIG. 3 shows a schematic diagram of the third embodiment.

In this embodiment, when the exterior cover 19 is closed, the guide plate main body 3a is set only five times! The guide plate main body 3a is urged toward the exterior cover 19 side by a spring 41, and the inverted ■-shaped rotating lever 43 is rotated around the lever shaft 45 as a fulcrum for the printer. The roller 44 attached to the main body and provided at the tip of one end of the rotating lever 43 is brought into contact with the guide plate main body 3a, and the outer cover 1
By the suppression piece 40 provided inside the exterior cover 19
When the guide plate body 3a is closed, the other end of the rotating lever 43 can be pressed, and the setting position 77I+ of the guide plate main body 3a is determined by the rotating lever 43 coming into contact with the stopper 46. .

That is, when the exterior cover 19 is closed, the pressing piece 40 pushes the rotating lever 43 and rotates it in the counterclockwise direction in the figure, so that the guide plate main body 3a is affected by the spring force of the spring 41 due to the rotation of the rotating lever 43. It will be rotated from the set position fa II to the retracted position ■.

[Effects of the Invention] As explained above, according to the present invention, the roll paper can be stably fed by preventing contact between the set guide member and the fed roll paper during recording. , it is possible to stabilize and improve the image quality of recorded images.

[Brief explanation of the drawing]

1 shows a schematic side view of the first embodiment, FIG. 2 shows a schematic side view of the second embodiment, and FIG. 3 shows a schematic side view of the third embodiment. 1: Roll paper 2: Rotating shaft 3: Set guide member 5: Cam 8: Paper feed roller Figure 1

Claims (1)

[Claims] A roll paper set guide for a recording device, which is provided with a set guide member that aligns the widthwise position of the recording paper with respect to the recording means in a paper feed path that feeds the roll-shaped recording paper stored in the recording device main body to the recording means. In the recording apparatus, the set guide member is configured to be rotatable from a set position where the recording paper is aligned to a position where it does not come into contact with the recording paper fed when the recording paper is at its minimum diameter. Roll paper set guide device.