JPH10157897A - Paper guide mechanism for printer - Google Patents

Abstract

PROBLEM TO BE SOLVED: To facilitate guiding operation, in which a paper guide is slid in the lateral direction of a continuos paper sheet so as to guide lateral directional side parts of the continuos paper sheet, and prevent a skew of the continuous paper sheet. SOLUTION: An integrated paper guide 14, which guides the lateral directional side parts of a continuous paper sheet in a range from a paper feeding unit 4 to a printing unit 5, is arranged freely slidably in the lateral direction of the continuous paper sheet 3. Only a single paper guide 14 is operated to be slid when the paper guide 14 is slid to the position according to a lateral width size of the continuous paper sheet 3 so as to guide the side parts in the lateral direction of the continuous paper sheet 3, so that this operation can be facilitated. As the paper guide 14 is integrally constructed, the whole of the side parts in the lateral direction of the continuous paper sheet 3 can be smoothly guided by means of the paper guide 14, and a skew, which is caused when a gap is generated on the guiding face in the paper guide 14 guiding the side parts of the conveyed continuous paper sheet 3, in the continuous paper sheet 3 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a paper guide mechanism for a printer using continuous paper.

[0002]

2. Description of the Related Art Conventionally, in a printer using continuous paper wound in a roll shape or continuous paper folded in a zigzag shape, a paper feeding section for setting the continuous paper in a paper feeding state is provided in a width direction of the continuous paper. The paper feeding unit guide for guiding the side of the paper feeding unit is provided. Further, a conveyance guide is provided for guiding a side portion of the continuous paper conveyed from the paper feeding unit to the printing unit in the lateral width direction. These paper feed unit guides and transport guides are provided so as to be slidable in the width direction of the continuous paper and freely fixed at arbitrary positions, and are slid and adjusted according to the width of the continuous paper. When the continuous paper is transported by a pinch roller method, the transport guide is divided into two portions before and after the pinch roller, and the two transport guides are separately slid and adjusted.

[0003]

When the continuous paper to be used is replaced with a continuous paper having a different width, the paper feed unit guide and the conveyance guide are slid in accordance with the width of the continuous paper. For this reason, there are two guides for adjusting the slide.
It takes three or three pieces, which is troublesome.

When the slide is adjusted, if there is a step in the width direction of the continuous paper between the paper feeding unit guide and the conveyance guide or between the two divided conveyance guides, the conveyance is stopped. The continuous paper is skewed. When the continuous paper being transported is skewed, printing on the continuous paper is performed diagonally,
Further, when the degree of skew becomes remarkable, a jam occurs.

[0005] In particular, when the printing position is determined on the basis of the center of the continuous paper, since the conveyance guides on both sides are adjusted, it takes time and it is difficult to position the conveyance guides.

Accordingly, the present invention provides a printer which can easily adjust the slide of a paper guide that guides the side portion of the continuous paper in the lateral width direction without any trouble, and can surely prevent skew of the continuous paper. It is an object to provide a paper guide mechanism.

[0007]

According to the first aspect of the present invention,
In a printer having a paper feeding unit for storing continuous paper and setting the paper in a paper feeding state, and a printing unit for printing on the continuous paper, in a width direction of the continuous paper in a range from the paper feeding unit to the printing unit. A paper guide having an integral structure for guiding a side portion is provided, and the paper guide is slidably provided in the width direction of the continuous paper. Therefore, when replenishing the continuous paper or changing the continuous paper to be used to a paper having a different width, the paper guide is temporarily expanded in the width direction of the continuous paper, and the paper guide is set after the continuous paper is set in the paper feeding unit. The paper is slid to a position corresponding to the width of the continuous paper, and the side in the width direction of the continuous paper is guided by a paper guide. In this operation, since there is only one paper guide to be slid, the operation is facilitated. In addition, since the paper guide has an integral structure, the side portion in the width direction of the continuous paper can be smoothly guided in the entire range from the paper feeding section to the printing section, and the side portion of the continuous paper being conveyed is guided. The skew of the continuous paper caused by the occurrence of a step on the guide surface of the paper guide is prevented.

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS One embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a side view showing a schematic structure of a printer according to the present invention, and FIG. 2 is a side view showing a part of the printer in an enlarged manner. The printer includes a label roll 3 which is a continuous paper which is formed by attaching a label 2 to a mount 1 and winding the roll into a roll.
Roll holder 4, which is a paper feeding unit for setting the paper in a paper feeding state, an edge-type thermal head 5, which is a printing unit for printing on the label 2 of the label roll 3, which is pulled out from the roll state, and is pulled out from the roll state. A capstan roller 6 and a pinch roller 7 for transporting the printed label roll 3 to a printing position by the thermal head 5, a platen 8 facing the thermal head 1, a peeling table 9 for peeling the printed label 2 from the mount 1, A mount winding shaft 10 for winding the mount 1 from which the label 2 has been peeled off, a ribbon mounting shaft 12 for mounting the ribbon 11, and a ribbon winding shaft 13 for winding the ribbon 11.
Etc. are provided.

The transfer type printer guides the side portions of the label roll 3 and the backing paper 1 in the width direction from the label roll holding part 4 to the thermal head 5 and the backing paper winding shaft 10. An integrated paper guide 14 is provided. The paper guides 14 are provided one by one on both sides in the width direction of the label roll 3 so as to be parallel to each other.
And the pinion 16, and are provided so as to be slidable and freely fixed at an arbitrary position in a direction in which they come into contact with and separate from each other, that is, in the width direction of the label roll 3. Paper guide 1
For example, the rack 15 or the pinion 16
The elastic member may be brought into contact with the member, and the force may be set to such a degree that the member can be moved by hand.

In such a configuration, the label roll 3
When replenishing the label roll 3 or changing the label roll 3 to be used to one having a different width, the paper guide 14 is temporarily expanded in the width direction of the label roll 3 and the label roll 3 is fed to the label roll holder 4. And the label roll 3 is pulled out along the guide portion 14a provided on the paper guide 14, and the capstan roller 6 and the pinch roller 7
Between the thermal head 5 and the platen 8,
Further, the ribbon 11 is set, and the leading end of the mount 1 is wound around the mount winding shaft 10. Thereafter, the paper guide 14 is slid to a position corresponding to the width of the label roll 3, and the two paper guides 14 guide the side portions of the label roll 3 and the mount 1 in the width direction. Two paper guides 14
Is connected by the rack 15 and the pinion 16,
The two paper guides 14 slide in the direction of approaching and separating from each other by the same dimension, and the label roll 3 is set on the basis of the center.

In a range from the label roll holding section 4 to the thermal head 5 and the mount winding shaft 10, only one sheet guide 14 is provided on one side thereof. Therefore, as an operation for guiding the side portions in the width direction of the label roll 3 and the mount 1, only the paper guide 14 may be slid, and the side guides of the label roll 3 and the mount 1 in the width direction may be guided. Operation becomes easier.

Further, since the paper guide 14 is integrally formed, the lateral sides of the label roll 3 and the backing paper 1 in the width direction are
The guide can be smoothly guided over the entire range from the label roll holding unit 4 to the thermal head 5 and the mount winding shaft 10. Therefore, the side of the label roll 3 to be conveyed or the side of the mount 1 wound on the mount winding shaft 10 does not contact the stepped guide surface, and the side of the label roll 3 or the mount 1 does not The skew of the label roll 3 and the backing paper 1 caused by contact with the guide surface having a gap can be prevented.

Therefore, it is possible to prevent the printing on the label 2 from being performed obliquely due to the skew of the label roll 3. Further, it is possible to prevent the label roll 3 and the backing paper 1 from becoming skewed so much that a jam occurs.

Further, in the present embodiment, the label roll 3 can be passed straight by using the edge type thermal head 5. Even when the label roll 3 is passed straight, the paper guide 14
Can be extended below the thermal head 5, and the skew of the label roll 3 can be more effectively prevented.

In the present embodiment, an example is described in which the integrated paper guide 14 is integrally formed, but two or more separately formed guides may be used as the label roll 3.
For example, it may be connected so as to slide integrally in the width direction of the continuous paper.

Further, in the present embodiment, the case where the label roll 3 wound in a roll shape is fed as continuous paper has been described as an example, but the continuous paper to which the present invention can be applied is zigzag. There is also folded computer paper.

[0017]

According to the first aspect of the present invention, when replenishing continuous paper or changing the continuous paper to be used to one having a different width, the paper guide is temporarily expanded in the width direction of the continuous paper. After the continuous paper is set in the paper feeding unit, the paper guide is slid to a position corresponding to the width of the continuous paper, and the lateral side of the continuous paper is guided by the paper guide. In the operation of sliding the paper guide, since there is only one paper guide to be slid, the operation can be easily performed. In addition, since the paper guide has an integral structure, the side of the continuous paper in the width direction can be smoothly guided over the entire range from the paper feeding unit to the printing unit, and the side of the continuous paper being conveyed is the paper guide. Skew of continuous paper caused by contact with a guide surface having a step can be prevented, whereby printing on continuous paper can be prevented from being skewed. Can be prevented from becoming excessively large and causing a jam.

[Brief description of the drawings]

FIG. 1 is a side view illustrating a schematic structure of a printer according to an embodiment of the present invention.

FIG. 2 is an enlarged side view showing a part thereof.

[Explanation of symbols]

 3 Continuous paper 4 Paper feed unit 5 Printing unit 14 Paper guide

Claims (1)

[Claims] 1. A printer having a paper feeding unit for storing continuous paper and setting the paper in a paper feeding state, and a printing unit for printing on the continuous paper, wherein a continuous area ranging from the paper feeding unit to the printing unit is provided. A paper guide mechanism for a printer, comprising: a paper guide having an integral structure for guiding a side portion of a paper in the width direction, and the paper guide slidably provided in the width direction of the continuous paper.