JPH106570A - Printer for long recording medium - Google Patents

Abstract

PROBLEM TO BE SOLVED: To prevent the floating of a recording medium at a printing position to ensure printing quality by providing a floating preventing means of a long recording medium at a printing position on the upstream side of the upper and lower guides provided on the upstream side of the printing head of a long recording medium feed passage. SOLUTION: A recording medium 2 is energized in the downward direction of a feed passage by the floating preventing means such as the elastomer or solenoid on the feed passage 8 permitting the recording medium 2 to pass and printing is applied to the recording medium 2 held to a horizontal state by a printing head. An elastomer 12 composed of a spring plate is fixed to a lower guide 7 by a screw 13 and has a curved surface 12a formed thereon. The curved surface 12a is positioned outside the upstream guide surface of the feed passage starting from the printing head 1 and formed so as not to protrude to the outside from a printer main body and energizes the recording medium 2 upwardly centering around the upper guide surface and keeps the position of the printing surface of the recording medium 2 horizontal.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printer for a tape-shaped long recording medium such as a terminal board nameplate or a label tape, and more particularly, to an improvement in technology for preventing a long recording medium from floating at a printing position. About.

[0002]

2. Description of the Related Art The prior art will be described in detail with reference to FIGS. 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 roller-shaped platen, and 4 is a ribbon guide. , 5
2 (shown in FIG. 2) is a recording medium conveying roller (hereinafter, referred to as a conveying roller), 6 is an idle roller, and the idle roller 6 is configured as a pair with the conveying roller 5. Constitute the transporting means of the recording medium 2. Reference numeral 7 denotes a lower guide that forms a lower portion of the conveyance path of the recording medium 2.
, An upstream guide surface 7a on the upstream side of the transport path 8 and a downstream guide surface 7b on the downstream side are formed. Also,
Above the upstream guide surface 7a, an upper guide 9 is provided so as to be urged downward, and an upper guide surface 9a is formed.

In order to reduce the size of the printer, the length B of the upstream guide surface 7a and the length C of the upper guide surface 9a are reduced, and the recording medium 2 is inserted between the upstream guide surface 7a and the upper guide surface 9a. Then, when the recording medium 2 is moved between the print head 1 and the platen 3 by the rotation of the conveying roller 5 and the recording medium 2 is moved between the conveying roller 5 and the idle roller 6, as shown in FIG. Due to the weight in the direction, the printing portion 2a of the recording medium 2 floats upward with the upstream guide surface 7a as a fulcrum,
Since printing is performed at this position, the printing is inclined with respect to the recording medium 2 as shown in FIG.

As shown in FIG. 5, an upstream guide surface 7a
If the length B and the length C of the upper guide surface 9a are increased, the recording medium 2 can be prevented from floating at the position of the print head 1, but there is a problem that the printer becomes large. Even if a member for guiding the lower surface of the recording medium 2 is provided outside the recording medium insertion opening 11 of the printer body 10 (shown in FIG. 2), the size of the printer is similarly increased. In the vicinity of the print head 1, it is difficult to press the recording medium 2 due to the presence of the ribbon guide 3 and the transport roller 5.

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

[0006]

SUMMARY OF THE INVENTION It is an object of the present invention to prevent floating of a recording medium at a printing position while keeping the size of a printer small, and to secure printing quality.

[0007]

SUMMARY OF THE INVENTION In a printer for a long recording medium which vertically conveys a recording medium and conveys the recording medium in a horizontal direction, a floating head for preventing the recording medium from floating at a printing position is provided with a print head in a conveyance path. The lower guide and the upper guide provided on the more upstream side are provided on the further upstream side.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A recording medium 2 is urged downward by a lifting means such as an elastic body or a solenoid on a conveying path 8 through which the recording medium 2 passes to maintain the horizontal state. Print with the print head.

[0009]

1 and 2 show an embodiment of the present invention.
FIG. 2 is a front view when preventing the floating of the recording medium 2;
Is a plan view. Hereinafter, the same components as those of the conventional example are denoted by the same reference numerals and have the same configuration.

In FIG. 1, reference numeral 12 denotes an elastic body made of a spring plate. The elastic body 12 is fixed to the lower guide 7 by a screw 13, and has a curved surface 12a.
The curved surface 12 a is located outside the upstream guide surface 7 a of the conveyance path starting from the print head 1, and is formed so as not to protrude outside the printer main body 10.
Is urged upward with the upper guide surface 9a as a fulcrum so that the position of the printing surface 2a of the recording medium 2 is held horizontally.

The elastic member 12 can be embodied in the same manner by biasing the elastic member 12 with rubber, a solenoid, or the like instead of a spring plate.

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

[0014]

As described above, in a printer for a long recording medium which vertically conveys a recording medium and conveys the recording medium in a horizontal direction, a lifting prevention means for preventing the recording medium from floating at a printing position is provided on the conveyance path. Since the lower guide and the upper guide, which are provided on the upstream side of the print head, are provided further upstream, the floating of the recording medium at the printing position is prevented while keeping the printer compact, and the printing is performed on the recording medium. The printing quality can be ensured without tilting.

[Brief description of the drawings]

FIG. 1 is a front view of a recording medium 2 according to the present invention when it is prevented from floating.

FIG. 2 is a plan view of the present invention.

FIG. 3 is a front view for explaining a conventional technique.

FIG. 4 shows an example of printing on a recording medium according to the related art.

FIG. 5 is a front view for explaining a conventional technique.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Print head 2 Recording medium 3 Platen 4 Ribbon guide 5 Conveyance roller 6 Idle roller 7 Lower guide 8 which forms the lower part of a conveyance path 8 Conveyance path 9 Upper guide 10 Printer main body 11 Recording medium insertion port 12 Means for preventing floating of recording medium ( Elastic body) 13 screw

Claims (1)

[Claims] In a printer for a long recording medium which vertically conveys a long recording medium and conveys the recording medium in a horizontal direction, a floating preventing means for preventing the long recording medium from floating at a printing position is provided. A printer for a long recording medium, wherein the printer is provided further upstream of a lower guide and an upper guide provided upstream of a print head on a road.