JPH06166230A - Printer - Google Patents

Abstract

PURPOSE:To prevent the paper clogging in a paper taking-off guide generated by the rolled-in paper with curling in the case where continuous paper is set to pass through an outer rolling guide passage wound in the roll shape or in the case where the same is set to pass through the inner rolling guide passage. CONSTITUTION:A paper taking-off guide 14 with a paper taking-off opening 13 of slip shape inclining to the extension line of a guide passage 9 is formed, and the paper taking-off guide 14 is installed on a paper taking-off opening 10 of a cutter case 5 storing a cutter 4 in a turning-over and removable manner. The end of the paper 1 is moved forward almost straight along the paper taking-off opening 13 by changing the direction of the paper taking-off guide 14 in a manner the inclined direction of the paper taking-off opening 13 conforms to the rolling-in direction of the paper 1 correspondingly to the setting condition of the paper 1 to prevent the paper clogging in the paper taking-off opening 13.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer having a structure for performing predetermined printing on a long sheet wound in a roll.

[0002]

2. Description of the Related Art FIG. 7 shows an example of a receipt printer as a conventional example of this type of printer. First, a housing-shaped main body case 51 is provided, and a long paper 52 is rolled and held in the main body case 51. FIG. 7 shows a state in which the paper 52 is held so that printing is performed on the outside, but the paper 52 is also configured to be held so that printing is performed on the inside. A guide passage 53 for guiding the paper 52 to a predetermined path is formed in the main body case 51, and a printing portion 54 is arranged in the guide passage 53.

A cutter case 55 is attached to the front of the main body case 51, and a guide passage 53 is formed to extend in the cutter case 55. And
A rotary type cutter 56 is provided in the guide passage 53.
Is provided. Further, a discharge port 57 is formed in the cutter case 55 at the end of the guide passage 53,
A paper ejection guide 59 having a paper ejection hole 58 at the paper ejection port 57.
Is attached. Here, in order to prevent accidents due to the cutter 56, the paper discharge hole 58 of the paper discharge guide 59 is formed in a slit shape having a width that does not allow the operator to insert a finger from the outside.

With such a structure, when the printing unit 54 performs predetermined printing on the paper 52, the paper 52 after printing is cut by the cutter 56 and is issued as a receipt from the paper ejection guide 59.

[0005]

Since the paper 52 wound in a roll has a curl, the curl passes through the cutter 56 without being corrected. Therefore, the sheet 5 that has passed through the cutter 56 and entered the sheet ejection guide 59
There is a problem that the sheet 2 may be caught by itself and cause a paper jam in the discharge guide 59. In particular, in recent years, for example, a paper 5 for receipt printing has been adopted in accordance with the downsizing of the apparatus.
In the case of 2 and the like, the one having a minimum winding diameter portion of about 1 inch is often used. However, since the paper 52 having such a small diameter has a strong curl, it is more inconvenient to cause paper jam in the paper discharge guide 59.

Incidentally, as shown in FIG.
Conventionally, there is a paper discharge guide 61 having a shape slightly inclined with respect to the extension line of the guide passage 53. In the discharge guide 61 having such a shape, when the inclination direction of the discharge hole 60 matches the winding direction of the paper 52, the paper 52 is discharged into the discharge hole 6
It goes straight through 0 and paper jams are less likely to occur. However, in the printer as illustrated in FIG. 7, the paper 52 is selectively set to be printed on the outside and printed on the inside. The winding direction of 52 is opposite. Specifically, the leading end of the paper 52 set to be printed on the outside is wound downward, and the leading end of the paper 52 set to be printed on the inside is wound upward. Therefore, in the paper ejection guide 61 having the inclined paper ejection hole 60, if the inclination direction is opposite to the winding direction of the paper 52, paper jam in the paper ejection hole 60 is more likely to occur. It has the drawback of being lost.

[0007]

SUMMARY OF THE INVENTION According to the present invention, there is provided a paper holding portion for holding a long paper wound in a roll shape, and a predetermined outer winding guide passage and an inner winding guide for the paper from the paper holding portion. A guide passage that selectively guides the passage, a print portion provided in the guide passage, a cutter arranged on the downstream side of the guide passage from the print portion, a cutter case that houses the cutter, and A paper ejection guide having a slit-shaped paper ejection hole that is reversibly attached to the paper ejection port formed in the cutter case with the extension line of the guide passage as a center line and is detachably attached. Provided. here,
The "outer winding guide passage" is a passage that guides the paper held in the paper holding portion so that the outer portion is printed, and the "inner winding guide passage" is a passage that is printed on the inner portion. Is a passage for guiding the paper held in the paper holding unit.

[0008]

In the paper holding portion, the paper held in the paper holding portion so as to be printed on the outer side portion is guided through the outer winding guide passage, and the paper held in the paper holding portion so as to be printed on the inner side portion is You will be guided through the inner winding guide passage. Then, the sheet guided by the guide passage and passed through the cutter is wound in the winding direction due to its own curl. The paper winding direction is opposite between the paper guided in the outer winding guide passage and the paper guided in the inner winding guide passage. Therefore, if the paper ejection guide is attached to the paper ejection port so that the inclination direction of the paper ejection hole matches the direction in which the paper is guided, the leading edge of the paper will be almost straight along the paper ejection hole. Proceeds straight and prevents paper jams in the paper exit holes. Therefore, whether the paper is set to be guided in the outer guide passage or the inner guide passage,
Smooth printing is performed without paper jams in the paper ejection guide.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be described with reference to FIGS. This embodiment is an example applied to a receipt printer. A case-shaped main body case 3 for accommodating the long sheet 1 and the printing portion 2 and the like is provided, and a cutter case 5 for accommodating a cutter 4 is detachably attached to the front surface of the main body case 3.

In the body case 3, the paper 1
Is rotatably held by the paper holding unit 6 in a rolled state. The sheet holding portion 6 is formed so as to hold the sheet 1 in the state illustrated in FIG. 1A and the state illustrated in FIG. 1B. The printing unit 2 is formed by a roller-shaped platen 7 that is driven by a driving unit (not shown) and is rotatable, and a print head 8 that comes into contact with and separates from the platen 7. Then, in the main body case 3, the paper 1 is provided on a predetermined path passing between the platen 7 and the print head 8.
Is formed, and the guide passage 9 communicates with the cutter case 5. Here, as the guide passage 9, an outer winding guide passage 9a for guiding the sheet 1 held in a state illustrated in FIG.
An inner winding guide passage 9b for guiding the sheet 1 held in the state illustrated in (b) is formed, and any one of the guide passages depending on the orientation of the sheet 1 in the sheet holding portion 6 is formed. 9 is configured to be selected. The state in which the sheet 1 is guided in the outer winding guide passage 9a is shown in FIG. 1 (a), and the state in which the sheet 1 is guided in the inner winding guide passage 9b is shown in FIG. 1 (b). To illustrate.

The cutter case 5 is formed with the guide passage 9 extending from the main body case 3, and a discharge port 10 that is open at the end thereof. The cutter 4 housed in the cutter case 5 is a rotary type cutter formed by a fixed blade 11 and a rotary blade 12 that face each other across the guide passage 9. Further, a discharge guide 14 having a slit-shaped discharge hole 13 located at the discharge port 10 is attached to the cutter case 5 so as to be reversibly removable.

Here, the shape of the paper discharge guide 14 and the mounting structure for the cutter case 5 will be described.

First, the shape of the discharge guide 14 will be described. The paper discharge guide 14 is formed by providing a horizontally long tubular member 16 that forms the paper discharge hole 13 at the center of a flat plate-shaped mounting surface 15 for the cutter case 5. The tubular member 16 is provided so as to be inclined with respect to the attachment surface 15 with respect to the orthogonal direction, and therefore, the paper discharge hole 13 is arranged in a state of being inclined with respect to the extension line of the guide passage 9. Then, one end of the mounting surface 15 in the up-down direction is positioned at the center portion in the left-right direction, and the fool hole 17 is formed.
Is formed, and a protrusion 18 is formed at one end in the up-down direction of the tubular member 16 on the side opposite to the fool hole 17 at both ends in the left-right direction. Further, the tubular member 16
A plurality of paper feed ribs 19 oriented in the opening direction are formed on the inner wall of the.

Next, the mounting structure of the paper discharge guide 14 with respect to the cutter case 5 will be described. The discharge port 10 formed in the cutter case 5 is formed to have a width in the left-right direction that is substantially the same as the width in the horizontal direction of the mounting surface 15 of the discharge guide 14, and the vertical direction is the vertical direction of the mounting surface 15. It is formed slightly wider than the width. A pair of paper ejection guides for receiving the upper and lower ends of the mounting surface 15 at a position where the front surface of the cutter case 5 and the mounting surface 15 are flush with each other near the center of the upper and lower ends of the paper ejection port 10. The receivers 20 are formed, and the discharge guide receivers 20 are formed with screw holes 21. The positions where the screw holes 21 are formed are positions where the screw holes 21 overlap the fool holes 17 of the paper discharge guide 14 attached to the paper discharge port 10.
Further, in the vicinity of both ends of the upper and lower ends of the paper discharge port 10,
A pair of ribs 23 having a recess 22 into which the protrusion 18 formed on the paper ejection guide 14 is fitted are formed. Therefore, the paper ejection guide 14 has the protrusion 18
The fixing screw 24, which is inserted through the fool hole 17 in a state in which is fitted into the concave portion 22, is screwed into the screw hole 21 to be fixedly attached to the cutter case 5.

In such a structure, the sheet 1 guided from the sheet holding section 6 to the guide passage 9 is conveyed by the platen 7 and a conveying section (not shown). Then, in the process, predetermined printing is performed by the print head 8, and the cutter 4
The sheet is cut by the above-mentioned method, discharged from the sheet discharge guide 14, and issued as a receipt.

On the other hand, in the printer of this embodiment, the paper 1 can be selectively set on the paper holding unit 6 so as to be printed on the outside or the inside.
Then, as illustrated in FIG. 1A, the sheet 1 set so as to be printed on the outside is guided through the outer winding guide passage 9a, and is printed on the inside as illustrated in FIG. 1B. The sheet 1 thus set is guided through the inner winding guide passage 9b. At this time, since the curl remains on the paper 1, the cutter 4
Focusing on the leading edge of the sheet 1 after passing through the sheet, the sheet 1 guided through the outer winding guide passage 9a tries to be wound downward, and the sheet 1 guided through the inner winding guide passage 9b is directed upward. Try to get involved. Therefore, the paper discharge guide 14 is attached and detached according to the holding direction of the paper 1 in the paper holding unit 6, and the winding direction of the paper 1 and the inclination direction of the paper discharge hole 13 are matched. As a result, the paper 1 advances almost straight along the paper discharge hole 13, and the paper jam of the paper 1 in the paper discharge hole 13 is prevented.

Here, the work of attaching / detaching the paper discharge guide 14 to / from the cutter case 5 will be described. First, the paper ejection guide 14
To attach the sheet to the cutter case 5, the mounting surface 15 of the sheet ejection guide 14 is fitted into the sheet ejection hole 10 and the mounting surface 15
Is brought into contact with the paper ejection guide receiver 20. In this state, slide the paper ejection guide 14 upward or downward to move the paper ejection guide 1
The fool hole 17 on the 4 side is aligned with the screw hole 21 on the cutter case 5 side. At this time, when the paper discharge hole 13 is tilted downward in the traveling direction and the paper discharge guide 14 is attached, the paper discharge guide 14 is slid upward and the paper discharge hole 13 is inclined upward in the moving direction. When attaching the guide 14, the discharge guide 14 is slid downward.
Then, at this time, the projection 18 on the side of the paper ejection guide 14 is in a state of being fitted into the recess 22 on the side of the cutter case 5. Therefore, the fixing screw 24 is inserted into the fool hole 17 and screwed into the screw hole 21 to be tightened.
4 is fixedly attached to the cutter case 5. On the other hand, in order to remove the paper ejection guide 14 from the cutter case 5, the work opposite to the attachment may be performed.

Although the present embodiment shows an example applied to a receipt printer, the present invention is not limited to this, and a long roll wound like a journal printer or a label printer can be used. As long as the printer has a structure for performing a predetermined printing on a lengthy sheet, it can be applied regardless of its format.

[0019]

According to the present invention, a sheet holding portion for holding a long sheet wound in a roll shape and a sheet selected from the sheet holding portion into a predetermined outer winding guide passage and inner winding guide passage. A guide passage that guides the guide path, a print portion provided in the guide passage, a cutter arranged on the downstream side of the guide passage with respect to the print portion, and a cutter case that stores the cutter,
A paper ejection guide having a slit-shaped paper ejection hole that is reversibly attached to the paper ejection port formed in the cutter case with the extension line of the guide passage as a center line Since the paper ejection guide is attached to the paper ejection port in the direction corresponding to the path in which the paper is guided, the inclination of the paper ejection hole is aligned with the paper winding direction to eject paper that has passed through the cutter. It can be advanced almost straight along the paper hole, thereby preventing paper jam in the paper discharge hole, and therefore, even if the path for guiding the paper is the outer winding guide path. Even in the inner winding guide passage, there is an effect that it is possible to issue a smooth print without causing a paper jam in the paper discharge guide.

[Brief description of drawings]

FIG. 1 is an overall vertical cross-sectional side view showing an embodiment of the present invention, in which (a) is a vertical cross-sectional side view showing a state where a sheet is guided in an outer winding guide passage, and (b) is an inner winding sheet. It is a vertical side view showing the state where it is being guided to a guide passage.

FIG. 2 is a vertical cross-sectional side view showing an attachment structure of a cutter case and a paper discharge guide when guiding a paper to an outer winding guide passage.

FIG. 3 is a vertical sectional side view showing a mounting structure of a cutter case and a paper discharge guide when guiding a paper to an inner winding guide passage.

FIG. 4 is a front view of a paper discharge guide.

FIG. 5 is a rear view of the paper discharge guide.

FIG. 6 is a front view of a discharge guide attachment portion of a cutter case.

FIG. 7 is a vertical cross-sectional side view of an entire conventional example.

FIG. 8 is a vertical sectional side view showing an example of a conventional paper ejection guide.

[Explanation of symbols]

 1 Paper 2 Printing Section 4 Cutter 5 Cutter Case 6 Paper Holding Section 9 Guide Passage 9a Outer Roll Guide Passage 9b Inner Roll Guide Passage 10 Paper Ejection Port 13 Ejection Hole 14 Ejection Guide

Claims (1)

[Claims] 1. A paper holding portion for holding a long paper wound in a roll shape, and the paper holding portion selectively guiding the paper to a predetermined outer winding guide passage and inner winding guide passage. A guide passage, a print portion provided in the guide passage, a cutter arranged downstream of the print portion in the guide passage, a cutter case for accommodating the cutter, and a cutter case formed in the cutter case. A discharge guide is provided at the discharge port, which is reversibly attached with the extension line of the guide passage as a center line and is detachably attached, and has a slit-shaped discharge hole that is inclined with respect to the extension line of the guide passage. Characteristic printer.