JPH115339A - Printer having cutter mechanism - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain a printer provided with a mechanism for partially cutting a recording paper in which paper jam is suppressed by making an opening within the working range of a movable cutter and providing a guide member forming a carrying path with a regulating part adjacent to the opening and abutting against the connecting part being left. SOLUTION: A recording paper 10 being fed from a paper feeding/printing mechanism 31 is passed through a paper passing port 11 made in a cutter frame 14 and the gap between a movable cutter 2 and a fixed cutter 3 before being discharged through a carrying path 18 between a cutter cover 13 and a printer cover 16. The movable cutter 2 turns horizontally about the shaft thereof at a desired position to cut the recording paper 10 in conjunction with the fixed cutter 3 while leaving the connecting part at the end thereof in the breadthwise direction. In such a printer, guide faces 13c, 16a are formed in the carrying path 18 facing the connecting part of the recording paper 10. According to the structure, movement of the recording paper 10 is regulated in the paper folding direction and since the recording paper 10 can be pushed upward, paper jam 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 printing apparatus such as a printer having a cutter mechanism for cutting recording paper.

[0002]

2. Description of the Related Art As a cutting mechanism of an auto-cutter provided in this type of printer, Japanese Utility Model Application Laid-Open No. 62-106792 has been proposed.
JP-A No. H10-214, the type of cutting a pair of blades in a scissor-type manner from one end to the other while cross-pressing the cutting edges, or a scissor-type movable blade as described above for recording paper. Japanese Patent Application Laid-Open No. 5-104, which is arranged on both sides and starts cutting from both ends
A conventional technique described in Japanese Patent Application Laid-Open No. 1-289697 is a sliding type in which the movable blade has a V-shaped cutting edge, either of the type described in Japanese Patent No. 484 or the type cut from the same both sides.

In a printer that cuts recording paper by these cutting mechanisms, an opening is provided on the side of the recording paper conveyance path facing the movable blade over the entire width of the recording paper because the movable blade moves. . This opening is also provided in the case where the recording paper is cut off at one of the two ends or at a part of the central portion, leaving a connection portion that is not cut.

[0006] FIG. 6 is a side view of a recording paper conveyance path around a cut section. More specifically, referring to FIG. 6, the recording paper 10 printed by the paper feeding and printing mechanism 31 passes through the path between the fixed blade 3 and the movable blade 2 from the paper passage port 11 of the cutter frame 14, Then, the paper is sent through the paper discharge port 18 between the cutter cover 13 and the printer cover 16 and cut into a desired length.

[0005] The cutting of the recording paper 10 is performed by moving the movable blade 2 to the fixed blade 3 side across the transport path. Therefore, an opening 19 is formed in the printer cover 16 as an opening of the movable blade 2. There is an opening 20 in the cutter cover 13,
These are provided over the entire width of the recording paper 10.

[0006]

However, printers having an auto cutter that leaves a part to be cut have the following problems.

The recording paper 10, which is partially cut off after printing on the recording paper and is cut off, is pulled by an operator and completely cut off. However, when the recording paper is being picked up, the next paper feed is performed. If the recording paper 10 has been cut, or if the recording paper 10 that has been partially cut in the absence of the operator has accumulated on the printer, a paper jam has occurred.

That is, in the case where a force is applied to the unremoved paper to prevent the paper from being ejected in the next paper feed, the paper breaks at the connection immediately after the paper feed starts, and the recording paper 10
As shown in FIG. 6, paper enters the outside of the transport path from the openings 20 and 19 on the movable blade side or the fixed blade side, and reaches the paper jam as shown at 10a and 10b in FIG.

SUMMARY OF THE INVENTION It is an object of the present invention to provide a printer with an auto cutter for partial cutting, in which paper jam is unlikely to occur irrespective of handling of discharged recording paper.

[0010]

In order to achieve the above object, a printer with a cutter mechanism for partially cutting a recording sheet according to the present invention has an opening in an operating range of a movable blade and forms a transport path. At least one of the fixed blade side and the movable blade side of the guide member is provided with a regulating portion which is adjacent to the opening, and which comes into contact with the uncut connection portion or the closest portion of the connection portion in the transport direction.

According to the above construction, the movement of the vicinity of the connection portion of the recording paper is regulated by the regulating portion. Therefore, even if the connection portion having low rigidity is broken, the connecting portion is moved along the regulation portion along the paper discharge port. The leading end of the cut recording paper on the upstream side is guided to the connecting portion and moved to the paper discharge port, so that paper jam does not occur.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a printer according to the present invention will be described in detail with reference to FIGS.

The printer according to the present invention is configured as shown in FIG. That is, the roll-shaped recording paper 10 placed in the recording paper storage unit 30 is fed by the paper feeding and printing mechanism unit 31.
And enters the cutter mechanism 32. Then, the recording paper is cut off while leaving a part thereof, and is discharged from the printer.

FIG. 4 is an explanatory view when the cutter mechanism 32 is viewed in a planar state. The movable blade 2 and the fixed blade 3 form a pair of scissors, and the rotation of the motor 6 rotates the worm 7 and the gear 8. The movable blade 2 reciprocates around the support shaft 4 as a fulcrum. At this time, the cutting edge of the movable blade 2 and the fixed blade 3 intersect and slide, so that the paper passing port 1 provided in the cutter frame 14 is provided.
1 through the recording paper 10 between the movable blade 2 and the fixed blade 3.
Is disconnected. The movable blade 2 is set to be shorter than the length that cuts the entire width of the recording paper 10, and the recording paper 10 is connected at the connection portion 12 left uncut.

FIG. 1 is a perspective view of the paper cutting section of the cutter mechanism section 32 of the printer according to the present embodiment as viewed from the fixed blade 3 side. The movable blade 2 is supported by the cutter frame 14 via the support shaft 4 and the fixed blade 3 is directly held by the cutter frame 14. The upper part of the movable blade 2 is covered with a cutter cover 13, and the upper part of the fixed blade 3 is covered with a printer cover 16 (see FIG. 5). Cutter cover-13
The fixed blade 3 side of the recording paper 10 guide surface 13a, 13b of the recording paper
13c, and an entrance 15 of the movable blade 2 is provided beside the guide surface 13c. These guide surfaces form one side of a conveyance path of the recording paper 10 that has passed through the paper passage opening 11. The guide surface 13c is set so as to be a conveyance path for guiding the connection portion 12 above the paper passage port 11 without blocking the trajectory of the movable blade 2.

FIG. 2 is a perspective view of the paper cutting section of the cutter mechanism 32 of the printer according to the present embodiment as viewed from the movable blade 2 side. The printer cover 16 covering the upper portion of the fixed blade 3 is provided with an entrance 17 of an opening so that the movable blade 2 does not collide with the printer cover 16, and the recording paper 10 abuts on the leading end side of the movable blade 2. Guide surfaces 16a, 16b for restricting the movement of the recording paper 10 toward the printer cover 16 are provided downstream of the entrance 17.
Are formed.

These guide surfaces form one side of a conveyance path of the recording paper 10 that has passed through the paper passage opening 11. Guide surface 1
6a forms a transport path for guiding the connecting portion 12 above the paper passage port 11 without blocking the trajectory of the movable blade 2.

Next, the function of the guide surface 13c and the guide surface 16a will be described with reference to FIG. 5, which is a side view of the paper cutting section of the cutter mechanism section 22.

The recording paper 10 sent from the paper feed and printing mechanism 31 passes through the paper feed port 11 provided in the cutter frame 14, between the movable blade 2 and the fixed blade 3, and between the movable cover 2 and the cutter cover 13. The paper is discharged to the outside of the printer through a transport path 18 formed by the printer cover 16, the movable blade 2 is rotated at a desired position, and the recording paper 10 is cut while leaving the connection portion 12.

Usually, the cut recording paper is taken out by cutting the connecting portion 12 by an operator, or is pushed out by the next printing.

However, if the next paper feed is performed while the operator is picking the recording paper, or if the partially cut recording paper 10 is accumulated on the printer when the operator is absent, the following operation is performed. When the paper is fed, the paper 12 is folded at the connection portion 12 of the recording paper 10, and the recording paper 10 to be sent tries to advance in the direction of the folding.

However, since the guide surface 13c and the guide surface 16a are provided in the paper transport path 18 facing the connecting portion 12, the movement of the recording paper 10 in the paper folding direction is restricted, and the recording paper 10 moves upward. Is pushed up. Recording paper 10 in the figure
c, the recording paper 10d shows the state.

Referring to the recess 16c provided in the vicinity of the paper exit of the printer cover 16, the recess 16c is a receiving portion for a fallen object such as a clip, and prevents the clip or the like from entering between the movable blade and the fixed blade. It is provided for the purpose of minimizing the lock of the cutter blade.

It should be noted that the present invention is not limited to the above-described embodiment, and various configurations are conceivable.

For example, in the auto cutter system, any of a scissors type, a slide type, a rotary type, and a guillotine type can be used for forming a connection portion, and the number and positions of the connection portions left uncut are limited. Not something.

For example, in the case where the center of the cutting edge of the movable blade for cutting the recording paper is concave and the connecting portion is at the center, the connecting portion comes into contact with the opening in which the movable blade is movably opened. The effect of the present invention can be achieved even if a guide portion for restricting the movement is arranged.

The guide surface facing the connecting portion is not limited to the cutter cover or the printer cover, but may be provided on a member for guiding the cutter frame or the recording paper. It is conceivable to use a dedicated part for the purpose of guiding the connection part only.

In this embodiment, the fixed blade is arranged over the entire width of the recording paper, and the guide surface 16a, which is a regulating portion, is provided on the fixed blade. The guide surface may be extended to the cutter frame 14 by setting a fixed blade, or the guide surface may be formed from the cutter frame 14 side.

[0029]

As described above, according to the present invention, since the movement of the vicinity of the connection portion of the recording paper is restricted by the restriction portion, the recording paper is conveyed even if the paper is bent at the connection portion having low rigidity. When the connection is made, the connecting part moves toward the paper discharge port along the regulating part, and the leading end of the cut recording paper on the upstream side is guided to the connection part, moved to the paper discharge port, and does not reach the paper jam. In addition, problems such as interruption of printing due to paper jam and removal of jammed paper could be prevented, and a highly reliable printer could be provided. Moreover, it is possible to incorporate the existing components into the existing component shapes without providing new components, and it is possible to improve the quality of the paper feed without increasing the cost.

Further, if the restricting portion is formed on both the fixed blade side and the movable blade side of the guide member, the effect is further enhanced.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a part of a cutter mechanism of a printer according to an embodiment of the present invention, showing a state of a paper transport path as viewed from a fixed blade side.

FIG. 2 is a perspective view showing another part of the cutter mechanism according to the embodiment, and shows a state of a paper conveying path viewed from a movable blade side.

FIG. 3 is an explanatory diagram showing a configuration of a main mechanism of the embodiment.

FIG. 4 is a plan view showing a cutter component according to the embodiment.

FIG. 5 is a side view of a paper transport path of the cutter mechanism according to the embodiment.

FIG. 6 is a side view of a paper transport path of a conventional cutter mechanism.

[Description of Signs] 2 Movable blade 3 Fixed blade 4 Support shaft 11 Paper passage port 12 Connection part 13 Cutter cover 13c Guide surface 14 Cutter frame 16 Printer cover 16a Guide surface

Claims (2)

[Claims] 1. A printer provided with a cutter mechanism for cutting a recording paper while leaving a part thereof by a movable blade and a fixed blade disposed so as to sandwich a recording paper conveyance path. At least one of the fixed blade side and the movable blade side of the guide member having the opening and forming the transfer path is adjacent to the opening, and is a connection portion left uncut or a portion immediately adjacent to the transfer direction of the connection portion. A printer with a cutter mechanism, characterized in that the printer has a restricting portion that comes into contact with the printer. 2. The printer with a cutter mechanism according to claim 1, wherein the restricting portion is formed on both the fixed blade side and the movable blade side of the guide member.