JPH03158262A - Platen structure - Google Patents

Abstract

PURPOSE:To smoothly convey a sheet, even if the sheet is thin or folded in its front end, by providing a flat member for covering both a surface of platen as a printing table and upper surfaces of sheet guide members. CONSTITUTION:A flat member 6 consisting of rubber or film is bonded onto a combination of sheet guide members 2 and 3 and platen 1 bolted each other. A double-faced tape, a bond or vulcanization is used for bonding the flat mem ber 6 onto the sheet guide members 2 and 3 and the platen 1. Therefore, the sheet guide face formed by the platen 1 and the sheet guide members 2 and 3 becomes continuous structure. Even if the paper is thin or folded in its front end, the sheet is smoothly conveyed without troubles.

Description

[Detailed description of the invention] [Industrial application field] The present invention relates to a platen structure for a printing device.

[Conventional technology]

Generally, the platen structure of a printing device with a flat platen surface has a print head (not shown) as shown in FIG.
The structure includes a platen 1 having a flat surface (platen surface) 1a, which is opposite to the platen 1, and which is a printing platform, and a paper guide member 23, which is provided adjacent to the surface 1a, which is a printing platform. The conventional platen structure includes a platen 1, a paper guide 2.
3 and were only fastened together with screws 4.

[Problem to be solved by the invention]

However, with such a conventional structure, even if it is made with high precision, the platen surface may
A gap or a step is created between C and the paper guide surfaces 2a and 3a. For this reason, there has been a problem in that particularly thin paper or paper with a bent leading edge gets caught when passing through, causing the paper feeding pitch to shift or, in the worst case, not being able to feed the paper.

Therefore, in order to solve these conventional problems, the present invention has the following features:
The purpose is to obtain a platen structure that allows paper to pass through smoothly even if the paper is thin or has a bent edge.

[Means to solve the problem]

In order to solve the above problems, the platen structure of the present invention includes a platen that faces the print head and has a flat surface that serves as a printing base;
In this platen structure including a paper guide member provided adjacent to a surface of the platen that serves as a print base, a flat member is provided between the surface of the platen that serves as a print base and the upper surface of the paper guide member. It is characterized by

〔Example〕

Embodiments of the present invention will be described below based on the drawings. 1st
In the structure shown in the figure, the paper guide members 2, 3 and the platen 1 are fastened together, and a metal flat member 5 is attached by welding. The mounting method may be by gluing instead of welding.

In the structure shown in FIG. 2, a paper guide member 2.3 and a platen 1 are fastened together, and a flat support member 6 made of rubber or film is attached by adhesive.

As the adhesion method, adhesion with double-sided tape, adhesion with adhesive, vulcanization adhesion, etc. are used.

The structure shown in FIG. 3 is an embodiment in which the paper guide members 2, 3 and the platen 1 are fastened together, and then a rubber or metal layer 7 is formed on the surface as a flat member by extrusion.

The surfaces of the 51' supporting members in these embodiments are flat and smooth.

To explain in detail about the platen surface and paper guide surface in the above embodiments, in the conventional technology, the platen and paper guide surface are Cutting or grinding was required before or after installing the guide member, but
In this embodiment, since it is only necessary to process the members to be attached to the surface in advance, the process can be easily performed.

〔Effect of the invention〕

The platen structure of the present invention described above has a flat member on the paper passing surface of the platen and the paper guide member, so the platen and the paper passing surface of the paper guide are continuously connected, and it is possible to prevent thin paper or folded edges. This has the effect that paper can be selected normally without getting caught even if the paper is stained.

[Brief explanation of the drawing]

1 to 3 are views showing respective embodiments of the present invention. FIG. 4 is a partial perspective view showing a conventional platen structure. 1...Platen 2...Paper guide 3...Paper guide 4...Screw 5...Metal member (flat member) 6...Rubber, film (flat member) 7...Rubber , Metal parts (flat parts)

Claims (1)

[Claims] In a platen structure comprising: a flat platen facing the print head and having a flat surface serving as a printing base; and a paper guide member provided adjacent to the surface of the platen serving as a printing base; A platen structure characterized in that a flat member is provided over the surface of the paper guide member and the upper surface of the paper guide member.