JPH08252924A - Ink tank of ink jet printer - Google Patents

Abstract

PURPOSE: To prevent the clogging of a filter by ink or impurities to enhance the durability of the filter by arranging the filter to the bottom surface of a tank almost vertically so as to cross the moving direction of a carriage. CONSTITUTION: In the ink tank of a serial scanning type ink jet printer moving a carriage left and right to perform printing, a filter 2 is vertically arranged to the bottom surface of the ink tank 1 so as to cross the moving direction of the carriage at a right angle or at an angle of 30-90 deg.. By this constitution, impurities in ink can be removed and the ink or impurities causing the clogging of the filter can be shaken off by the flow of the ink generated by the left-and- right movement of the carriage to prevent the clogging of the filter and the durability of the filter 2 can be enhanced.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an ink tank of a serial scan type ink jet printer which prints by moving a carriage left and right.

[0002]

2. Description of the Related Art In a conventional ink tank, a cylindrical filter 12 is installed in an ink tank 11 as shown in FIG. 5, and ink collected in an ink reservoir 14 is sucked up by an ink supply pipe 13 in the filter 12. And was supplied to a print head (not shown). In this case, since the filter 12 does not have a cleaning function, ink and impurities are clogged, and the durability of the filter is poor.

[0003]

In the conventional ink tank, the filter for filtering the ink is clogged with the ink and impurities, and the durability of the filter is poor.

An object of the present invention is to provide an ink tank in which clogging of the filter due to ink or impurities is prevented and the durability of the filter is improved.

[0005]

In order to achieve the above object, a filter in an ink tank is installed perpendicularly to the bottom surface of the tank, and is tilted at a right angle or 30 ° to 90 ° with respect to a moving direction of a carriage in a horizontal plane. It is achieved by placing them.

[0006]

According to the ink tank configured as described above, it is possible to remove impurities in the ink like the conventional ink tank, and the ink clogged in the filter and the impurities are caused by the flow of the ink caused by the movement of the carriage. By being shaken off, clogging of the filter can be prevented, and the durability of the filter can be improved.

[0007]

Embodiments of the present invention will be described below with reference to the drawings.

In FIGS. 1 and 2, reference numeral 1 is an ink tank for reserving ink. Reference numeral 2 is a filter for filtering impurities in the ink, which is installed vertically to the bottom surface of the tank and orthogonal to the carriage movement direction. Reference numeral 3 is an ink supply pipe for supplying the ink filtered by the filter 2 to a head (not shown). Reference numeral 1a is a reservoir for storing the ink before being filtered by the filter 2, and 1b is a reservoir for storing the ink filtered by the filter 2.

The arrows in FIG. 2 indicate the flow of ink.
The ink accumulated in the ink reservoir 1a is filtered through the filter 2 to remove impurities, and then enters the ink reservoir 1b, and is supplied to the head through the ink supply pipe 3.

In FIG. 3, 5 is a guide shaft. The carriage 4 reciprocates in the direction of the arrow for printing.

According to the ink tank having the above structure,
When the ink that has accumulated in the ink reservoir 1b is returned to the ink reservoir 1a by inertia due to the lateral movement of the carriage, the ink and impurities that have adhered or clogged to the surface of the filter 2 on the reservoir 1a side are shaken off. Filter clogging is prevented.

FIG. 4 shows another embodiment of the ink tank according to the present invention, in which the mounting angle of the filter with respect to the carriage movement direction is different from that of FIG.

In FIG. 4, the filter is arranged vertically on the bottom surface of the tank, and is arranged with an inclination of θ with respect to the moving direction of the carriage. 30 for this θ
Even if the angle range of 90 ° to 90 ° is provided, the same effect as in the case of FIG. 1 can be obtained.

[0014]

According to the ink tank of the present invention, it is possible to prevent clogging of the filter due to the flow of ink when the carriage is moved, so that it is possible to provide an ink tank having excellent filter durability.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of an ink tank according to the present invention.

FIG. 2 is a plan view of the ink tank of FIG. 1 viewed from the direction of arrow A.

FIG. 3 is a perspective view showing a moving direction of a carriage.

FIG. 4 is a plan view showing another embodiment of the ink tank according to the present invention.

FIG. 5 is a partial schematic perspective view showing an ink tank using a conventional technique.

[Explanation of symbols]

Reference numeral 1 is an ink tank, 2 is a filter, and 3 is an ink supply pipe.

Claims (2)

[Claims] 1. An ink jet printer for printing by moving a carriage equipped with an ink tank having a filter for filtering impurities in the ink to the left and right to print the filter on the bottom surface of the tank so as to intersect the carriage movement direction. An ink tank for an inkjet printer, which is arranged almost vertically. 2. The ink tank of an ink jet printer according to claim 1, wherein the filter is arranged in a horizontal direction at an angle of 30 ° to 90 ° with respect to a carriage movement direction.