JPH0444871A - Printer - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed description of the invention] Industrial applications The present invention relates to an impact printer.

Conventional technology The following is a description of the Yokohama printer.

FIG. 4 is a cross-sectional view of a future technology printer.

In FIG. 4, 21 indicates a print head 22 or a platen 23.
24 is a front cover that is detachably attached to the top of the print head of the housing, 25 is set in a horizontal position when using a continuous sheet, and is fixed with respect to a horizontal plane when using a single sheet. The paper stand 26, which is locked at a position rotated by an angle θ, is a soundproof cover having a pair of side plates 26a that contact the left and right sides of the paper contacting portion of the paper stand 24.

Problems to be Solved by the Invention However, in the above-mentioned conventional configuration, since the supporting points of the paper stand and the soundproof cover are different, as shown in FIG. Even if it is designed so that there is no space between it and the paper stand to prevent printing sound from leaking between the side plate of the soundproof cover and the paper stand, the space shown in Figure 5 (b) for use on single sheets is When the position of the paper stand was changed in this way, a gap was created between the bar stand and the side plate of the soundproof cover, and noise leaked through this gap, making the noise louder.

Means for Solving the Problems In order to solve the above-mentioned conventional problems, the present invention provides soundproofing when the side plates of the soundproof cover are placed in contact with the left and right sides of the paper contacting part of the paper stand. A rib is formed that overlaps the side plate of the cover.

Function: Due to the above-described configuration, the present invention prevents printing sound from leaking to the outside from the left and right sides of the paper conveyance path when both single sheet and continuous sheets are used.

Embodiment FIG. 1 is a side view of a paper discharge section of a printer in an embodiment of the present invention. In FIG. 1, l is a housing, 2 is a front cover, 3 is a soundproof cover having a side plate 3a,
Since these are the same as conventional techniques, their explanation will be omitted. As shown in the cross-sectional view of FIG. 2, side plates 3a are provided on the left and right sides of the paper contact portion 4a of the paper separator 4.
A rib 4b is formed which overlaps the side plate 3a when it comes into contact with the left and right sides of the side plate 3a, and a guide groove 4 is formed at a position facing the side plate 3a.
C is formed.

In the printer configured as described above, when the paper stand 4 is set horizontally to use continuous paper, a gap is created between the left and right sides of the paper contact portion 4a and the side plate 3a, as in the conventional case. Therefore, printing sound does not leak outside from the left and right sides of the paper conveyance path. Next, when the paper stand 4 is locked at a position rotated by an angle e in order to use a cut sheet, the side plate 3a and the rib 4b overlap as shown in FIG. Sound does not leak outside from the left and right sides of the paper transport path.

Furthermore, as shown in this embodiment, if the guide groove 40 is formed at a position facing the side plate 3a of the paper stand 4,
Since the overlapping area between the rib 4b and the side plate 3a is increased when using the cut sheet, the soundproofing effect can be further enhanced.

Effects of the Invention The present invention has ribs that overlap the soundproof cover when the side plates of the soundproof cover come into contact with the left and right sides of the paper contacting part of the paper stand. In order to prevent printing sound from leaking to the outside from the left and right sides of the paper conveyance path when continuous paper is used, the soundproofing effect when using single sheets can be enhanced without reducing the soundproofing effect when using continuous paper.

[Brief explanation of drawings]

FIG. 1 is a side view of the paper discharge section of the printer in one embodiment;
Figure 2 is a cross-sectional view of the printer cut through Al-A2, Figure 3
The figure is a side view of the same printer when using cut paper, Figure 4 is a cross-sectional view of the printer using the conventional technology, and Figures 5 (A), (
B) is a side view of the paper discharge section of a conventional printer when using a single sheet and when using a continuous sheet, respectively. 1... Housing, 2... Front cover,
3...Soundproof cover, 3a...Side plate of soundproof cover 3, 4...Paper stand, 4b.
...Rib, 4c...Guide groove Figure 1-=Az No. 1 Front force JC- Soundproof panel-7 Position classification position 21-11 Body condition-Front cover 25-Page J ( -Stand 26-・With soundproofing power J-

Claims (1)

[Claims] A print head that prints by applying impact force to the paper, a platen that supports the paper from the back side of the print head, and a paper stand that can be switched between the position when using single sheets and the position when using continuous sheets. and a soundproof cover having a pair of side plates in contact with the paper contacting portion of the paper stand on the left and right sides, the side plates of the soundproofing cover on the left and right of the paper contacting portion of the paper stand are in contact with the paper contacting portion of the paper stand. A printer characterized in that ribs are formed that overlap the side plates of the soundproof cover when the ribs come into contact with the left and right sides of the soundproof cover.