JP3002863B2 - Printer for long recording media - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a tape-shaped long recording medium printer such as a terminal board nameplate or a label tape, and more particularly to a floating prevention for preventing a long recording medium from floating at a printing position. The present invention relates to a technique for preventing buckling of a recording medium caused by means during conveyance of a recording medium.

[0002]

2. Description of the Related Art As a conventional technique, a configuration shown in FIGS. 4 and 5 (a part of which is shown in FIG. 1) is known, and the details thereof will be described. 1 is a thermal print head (hereinafter, referred to as a print head), 2 is a tape-shaped long recording medium (hereinafter, referred to as a recording medium) such as a terminal board nameplate or a label tape, 3 is a platen, 4 is a guide , 5 is a recording medium. The transport roller 5 is a medium transport roller (hereinafter, referred to as a transport roller), and is driven by a motor (not shown). Reference numeral 6 denotes an idle roller, and the idle roller 6 is configured as a pair with the transport roller 5, and the transport roller 5 and the idle roller 6 constitute transport means for the recording medium 2. The thermal print head 1 and the platen 3
The feed roller 5 and the idle roller 6 are provided vertically, respectively.
The plane of the recording medium 2 along with the conveyance path 8 that regulates the width direction
And printing is carried horizontally in the longitudinal direction.

[0005] Reference numeral 7 (shown in FIG. 1) denotes a lower guide which forms a lower portion of the conveyance path of the recording medium 2. The lower guide 7 has an upstream guide surface on the upstream side of the conveyance path 8 with the print head 1 as a starting point. 7a and a downstream guide surface 7b (shown in FIG. 1) on the downstream side are formed. An upper guide 9 (shown in FIG. 1) is located above the upstream guide surface 7a, and has an upper guide surface 9a and a support shaft 9b (shown in FIG. 1). An upper guide holder 10 (shown in FIG. 1) is formed in a substantially U-shape, and a hole 10a pivotally connected to the support shaft 9b is formed in the center of the upper guide holder 10.
The upper guide 9 swings about the support shaft 9b with respect to the upper guide holder 10, and the upper guide holder 10 itself also includes a pair of shafts 11a provided on the printer body 11. , 11b as a fulcrum, and a spring receiving portion 11d is provided at the distal end portion 11c. Numeral 12 denotes a coil spring.
1d, which is located below the upper guide 9 due to its elasticity.
To the recording medium 2 to prevent the recording medium 2 from floating at the printing position.

If a member for guiding the upper surface of the recording medium 2 is provided downstream of the print head 1 in the recording medium conveying path 8, it becomes difficult to remove the recording medium 2 when the recording medium 2 is jammed. Therefore, a member for guiding the upper surface of the recording medium 2 is not provided downstream of the print head 1.

When the recording medium 2 is inserted between the upstream guide surface 7a and the upper guide surface 9a, the upper guide surface 9a is urged by the coil spring 12.
4A to 6C, the recording medium 2 buckles due to the pressing force on the recording medium 2, and a part of the recording medium 2 overlaps between the transport roller 5 and the idle roller 6 to cause a transport failure. In this state, since the paper is moved between the print head 1 and the platen 3 by the rotation of the transport roller 5, there is a problem in that the print quality is excessive.

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to ensure that the recording medium 2 does not buckle even when a pressing force for preventing the upper guide surface 9a from lifting against the recording medium 2 acts, and that the print quality is ensured.

[0007]

The plane of the elongated recording medium [SUMMARY OF] to the vertical, a conveyance path for conveying in a horizontal direction, a print head,
Of the long recording medium provided upstream of this print head.
Transport means, and a long record provided upstream of the transport means
Press the recording medium from above to prevent lifting at the print position
Printer for long recording medium having floating preventing means
In the above, a long recording medium is
A bending means for bending in the thickness direction is provided,
The configuration is such that the position of the step is above or upstream of the bending means .

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The recording medium 2 is pressed in its width direction by an upper guide 9 which is a lifting prevention means located on a transport path 8 through which the recording medium 2 passes. The recording medium 2 is deformed in the thickness direction by a bending means for bending the recording medium 2 in a state where the cross section is flat, so that the second moment of area in the width direction is large, and the conveying roller 5 is flat.
And normal conveyance is carried out between the idle rollers 6.

[0009]

1 and 2 show an embodiment of the present invention, in which the same components as those of the prior art are denoted by the same reference numerals and have the same configuration.

[0010] 13 in the projections, in the transport path 8 of the projection 13 is a recording medium 2, further provided on the upstream side of the conveying roller 5 and the idle roller 6 positioned upstream from the print head, the transport path 8 Is formed as a bending means for bending the recording medium 2 passing therethrough by bending the recording medium 2 in the thickness direction . Note that the width of the transport path 8 at this location is formed to be substantially the same as the other locations.

The upper guide 9 serving as the lifting prevention means is partially located above the conveyance path 8a where the projection 13 serving as the bending means is formed.
Although the recording medium 2 does not buckle as in the above, the upper guide 9 may be positioned on the transport path 8 further upstream of the transport path 8a, avoiding the transport path 8a where the protrusion 13 is formed. With this configuration, the recording medium 2 is once buckled by the pressing force of the upper guide 9, but the recording medium 2 is forcibly bent in the thickness direction by the protrusion 13 , and at this time, the recording medium 2
It is touched and straightened. Therefore, as shown in FIG. 3, the space between the transport roller 5 and the idle roller 6 becomes flat, and the paper is normally transported.

Reference numeral 14 denotes an ink ribbon, and reference numeral 15 denotes a ribbon cassette.

[0013]

As described above, in a printer for a long recording medium in which the plane of the recording medium is made vertical and the recording medium is conveyed in the horizontal direction, the conveying means of the recording medium on the upstream side of the print head is used.
Further, the recording medium is lifted up by the floating prevention means on the upstream side.
Even if pressed further, by the bending means that bends the transport path
The recording medium does not buckle or buckles
Because the paper is straightened, normal conveyance is performed and good printing is performed.
can get.

[Brief description of the drawings]

FIG. 1 is a plan view of the present invention.

FIG. 2 is a perspective view of a main part of the present invention.

FIG. 3 is a cross-sectional view when the recording medium 2 of the present invention does not buckle or buckling is corrected.

FIG. 4 is a perspective view for explaining a conventional technique.

FIG. 5 is a cross-sectional view when the recording medium 2 buckles for explaining a conventional technique.

FIG. 6 is a front view for explaining a conventional technique.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 print head 2 recording medium 3 platen 4 ribbon guide 5 transport roller 6 idle roller 7 lower guide 8 transport path 9 upper guide 10 upper guide holder 11 printer body 11 12 coil spring 13 bending means 14 ink ribbon 15 ribbon cassette

──────────────────────────────────────────────────続 き Continued on the front page (58) Field surveyed (Int. Cl. ⁷ , DB name) B65H 23/00-23/34 B41J 15/00-15/24 B41J 3/36

Claims (1)

(57) [Claims] 1. A is vertical to the plane of the long recording medium, a conveying path for conveying in a horizontal direction, and the print head, the print head
A means for transporting a long recording medium provided at a more upstream side;
The long recording medium provided on the upstream side of the
Lifting to prevent lifting at printing position
Means for printing on a long recording medium,
The long recording medium is bent in the thickness direction on the upstream side of the conveyance means.
Bending means for bending the position of the floating prevention means.
A printer for a long recording medium, wherein the printer is located above or upstream of the means .