JP3331741B2 - Ink jet recording device - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink jet recording apparatus, and more particularly, to an ink jet recording apparatus having means for removing stains on a platen.

[0002]

2. Description of the Related Art Conventionally, in an ink jet recording apparatus using a platen for paper feeding, the printing paper does not arrive at the outer peripheral surface of the platen facing the ink jet recording head due to an erroneous operation by the user of the recording apparatus. As shown in FIG. 4, ink may be ejected from the ink jet head to the outer peripheral surface of the platen and adhered. Unless this ink is removed, when the printing paper contacts the outer peripheral surface of the platen when the recording apparatus is in a printing state. In this case, the attached ink is adsorbed on the printing paper and becomes stains, thereby impairing the printing quality.

[0003]

In order to remove the ink adhering to the printing surface on the outer periphery of the platen shown in FIG. 4, a printing paper is inserted into a recording apparatus, and the printing paper is fed to the printing paper. In this case, it is necessary to take a troublesome and troublesome method for the user of the ink jet recording apparatus, such as sucking ink or wiping ink adhered to the printing surface of the outer periphery of the platen while rotating the platen.

The present invention has been made in view of such a problem, and an object of the present invention is to provide a structure for removing ink attached to a printing surface on the outer periphery of a platen due to an erroneous operation by a user of an ink jet recording apparatus. To provide an ink jet recording apparatus.

[0005]

According to the present invention, there is provided an ink jet recording apparatus comprising: a platen for conveying a recording medium; an ink jet recording head for ejecting ink droplets onto the recording medium conveyed by the platen for recording; An ink jet recording apparatus comprising: a cleaning unit that removes ink stains on an outer peripheral surface of a platen on a lower side in a rotation direction of the platen from a position where a recording head is disposed, wherein the cleaning unit removes ink on the outer peripheral surface of the platen. A resin plate having flexibility to be scraped, and the resin plate
Absorbs scraped ink and guides it to thick absorber
The thin absorber and the scraped ink
It is characterized by being constituted by a thick absorber that accumulates through the gap, and a holder having a protrusion for holding them. Further, the resin plate is provided so as to press the platen with a constant pressure. Further, the thick absorber has a shape in which the platen side is inclined.

[0006]

[0007]

[0008]

DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below in detail based on embodiments.

FIG. 1 is a perspective view for explaining an ink jet printer, 1 is a cylindrical platen,
The printing paper 3 as a recording medium is conveyed while rotating in the direction A.
The recording head 2 is arranged so as to face the printing paper 3,
By causing the recording head 2 to eject ink droplets while scanning the area B, a recording image can be formed on the printing paper 3.

FIG. 2 shows an ink jet recording apparatus provided with an ink absorbing structure 5 for removing ink droplets adhering to the outer peripheral surface of the platen 1, and the direction of rotation of the platen relative to the position where the recording head 2 is disposed. Platen 1 on the lower side of A
The length of the ink absorbing structure 5 is substantially the same as the length of the ink absorbing structure 5. The ink absorbing structure 5 has a flexible synthetic resin plate 7 that comes into contact with the printing surface of the platen, a thin absorber 8 that absorbs ink, and a thick absorber 8 that absorbs ink with the ink absorbing side inclined. It comprises a body 9 and a holding body 6 having projections 10a and 10b for holding them. The ink absorbing structure 5 has holes 7a, 8a, 9a and 7b in which the protrusions 10a and 10b of the holder 6 are opposed to the synthetic resin plate 7, the thin absorber 8 and the thick absorber 9 for absorbing ink. , 8b, 9b
Positioning and fixing are performed by bending the tips of the protrusions 10a and 10b.

The synthetic resin plate 7 constituting the ink absorbing structure 5 is flexible and comes into contact with the outer peripheral surface of the platen at a constant pressure, and plays a role of scraping ink adhered to the outer peripheral surface. . Also, a thin absorber 8 for absorbing ink
Has a shape slightly narrower in the width direction than the synthetic resin plate 7,
It is fixed so as to be in close contact with the synthetic resin plate 7, absorbs the ink scraped off by the synthetic resin plate 7, and transfers it to the thick absorber 9.
Plays a role in leading to. Further, the thick absorber 9 for absorbing the ink has a shape in which the platen side is inclined to facilitate absorption of the ink, and plays a role of storing the absorbed ink.

According to the ink jet recording apparatus of the present invention, even when the ink droplet as shown in FIG. 4 adheres to the outer peripheral surface of the platen, the synthetic resin plate 7 which is always in contact with the outer peripheral surface of the platen 1 makes it possible. The ink is scraped off, and the ink is accumulated in the absorber 9 via the absorber 8, so that the outer peripheral surface of the platen in contact with the printing paper 3 can always be kept clean.

The ink absorbing structure 5 of the present invention may be selectively brought into contact with the outer peripheral surface of the platen 1 by a cleaning button or the like provided on the main body of the recording apparatus, for example, when ink droplets are erroneously adhered. It is possible. Thereby, the durability of the synthetic resin plate 7 can be improved. It goes without saying that the cleaning effect is improved by providing a plurality of the ink absorbing structures 5. Further, by making the ink absorbing structure 5 detachable, it is possible to clean the absorbers 8 and 9 or to replace the absorbers themselves.

[0014]

As described above, according to the ink jet recording apparatus of the present invention, it is possible to prevent the printing paper from being stained by ink droplets erroneously attached to the outer peripheral surface of the platen, and to use a troublesome method of wiping the platen by the user. It is possible to keep the platen surface in a clean state without having to remove the platen.

[Brief description of the drawings]

FIG. 1 is a perspective view for explaining an ink jet recording apparatus of the present invention.

FIG. 2 is a perspective view for explaining the ink jet recording apparatus of the present invention.

FIG. 3 is an exploded perspective view of the ink absorbing structure of the present invention.

FIG. 4 is a perspective view illustrating a case where an ink droplet is formed on a platen.

[Explanation of symbols]

 1 platen 2 ink jet head 3 printing paper 4 ink 5 ink absorbing structure 6 holder 7 synthetic resin plate 8 thin absorber 9 thick absorber

Claims (3)

(57) [Claims] A platen for conveying a recording medium;
An ink jet recording head for ejecting ink droplets onto a recording medium conveyed by the platen for recording, and removing ink stains on an outer peripheral surface of the platen from a position where the recording head is disposed to a lower side in a rotation direction of the platen. in the ink jet recording apparatus having a cleaning means, the cleaning means comprises a resin plate having a flexible scraping ink of the platen peripheral surface, preparative scraped by said resin plate
A thin absorber that absorbs absorbed ink and directs it to a thick absorber, a thick absorber that accumulates scraped ink through the thin absorber , and An ink jet recording apparatus comprising: a holding member having a protrusion for holding. 2. The ink jet recording apparatus according to claim 1, wherein the resin plate is disposed so as to press the platen at a constant pressure. 3. The ink jet recording apparatus according to claim 1, wherein the thick absorber has a shape in which the platen side is inclined.