CN2850922Y

CN2850922Y - Continuous ink-supply device for ink-jet printer

Info

Publication number: CN2850922Y
Application number: CN 200520120347
Authority: CN
Inventors: 刘兴相; 吴泽; 曾玉祥
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Print Rite Technology Development Co Ltd of Zhuhai
Priority date: 2005-12-08
Filing date: 2005-12-08
Publication date: 2006-12-27
Anticipated expiration: 2015-12-08

Abstract

The utility model relates to a continuous ink supply device for an ink jet printer, which comprises a first ink box, an ink transfusion pipe, a porous and loose medium and a second ink box, wherein the porous and loose medium is positioned in an inner ink storing cavity arranged on the first ink box; the inner ink storing cavity is communicated with the second ink box through the ink transfusion pipe. The outer surface of the porous and loose medium and the cavity wall of the inner ink storing cavity keep a natural contacting state or an interstice contacting state. The horizontal position of an ink outlet connected with the first ink box and a printing head is higher than an ink working liquid level in an ink supply opening connected with the second ink box and the ink transfusion pipe. The ink supply device has the characteristic that ink can be continuously supplied. The pressure state between the printing head and the first ink box is stable.

Description

The ink-jet printer continuous ink supply device

Technical field

The utility model relates to the ink-jet printer continuous ink supply device.

Background technology

Ink-jet printer is to bow and pick up promptly existing common indispensable office equipment in the modern handle official bussiness field, and supporting ink supply unit---print cartridge had become the important branch department that has than high technology content already.The early stage common structure of print cartridge is not considered the recycling problem of print cartridge itself usually, thereby promptly becomes the raw material recycle object after ink exhausts.This not only causes the print cartridge use cost high, has also strengthened the labour intensity in the follow-up waste and old raw material recovery process, is unfavorable for raising labour efficiency and saving limited physical resources.For this reason, the ink supply unit that much can recycle arises at the historic moment.

For example, domestic utility model patent CN03237829.7 discloses a kind of ink-cases of printers continuous ink supply device.It comprises ink storage chamber, printhead, ink-feeding tube and ink-feeding container.The ink storage chamber that is connected with printhead is provided with the ink feeder that is tightly connected through ink-feeding tube and ink-feeding container.Ink-feeding container is a bag shape or box-like.This continuous ink supply device can be continuously for printhead provides ink, and the design effect that helps prolonging the service life of printhead and make full use of each parts of printhead economizes on resources.But it is perfect that this continuous ink supply device is still owed aspect technical construction, so that its serviceability performance is not good enough.For example, printhead ink supply mechanism requires print cartridge inside should possess appropriate ink confinement capabilities, and perhaps the ink storage chamber of print cartridge inside has suitable negative pressure, leaks to prevent ink droplet.But this continuous ink supply device lacks the technology solution at this type of problem.Therefore, though it helps to solve print cartridge problem in service life, but still ink leakage can appear.

The utility model content

The utility model purpose is to provide a kind of and can uninterruptedly supplies ink and not have the ink-jet printer continuous ink supply device that ink leakage is polluted.

According to above-mentioned purpose, the ink-jet printer continuous ink supply device comprises first print cartridge that is used for to the printhead of ink-jet printer supply ink, ink-feeding tube, porosity and looseness medium and to second print cartridge of first print cartridge supply ink.The porosity and looseness medium is positioned in the inside ink storage chamber of first print cartridge.Be communicated with by ink-feeding tube between the inner ink storage chamber of first print cartridge and second print cartridge.The chamber wall of the inner ink storage chamber of the porosity and looseness medium outer surface and first print cartridge keeps nature contact condition or gap contact condition.

Above-mentioned porosity and looseness medium can adopt sponge.

Preferably, the ink outlet port horizontal level that is connected with printhead of first print cartridge is higher than the ink operating fluid level in the ink supply port that second print cartridge is connected with ink-feeding tube.

Further, the cross section that flows to perpendicular to ink in first print cartridge and the ink outlet port that printhead is connected is provided with filter screen.This filter screen to porous porous medium has a predefined distance in the face of between the surface of ink outlet port.

In the technique scheme, the nature contact condition is meant, the porosity and looseness medium is not subjected to the extruding of the chamber wall of the inner ink storage chamber of first print cartridge, therefore between the chamber wall of porosity and looseness medium outer surface and the inner ink storage chamber of first print cartridge, does not have the active force that causes because of both mutual extruding.The porosity and looseness medium only places the inside ink storage chamber of first print cartridge under self gravitation and adsorbed ink gravity effect.

Gap contact condition, definite statement are that porosity and looseness medium face shaping is corresponding with the face shaping of the inner ink storage chamber of first print cartridge, but its volume is less than the inner ink storage chamber volume of first print cartridge.The porosity and looseness medium places the inside ink storage chamber of first print cartridge under self gravitation and adsorbed ink gravity effect.

The ink operating fluid level is the operating fluid level that is arranged at the ink on second print cartridge and the ink supply port that ink-feeding tube is connected; Or by continuous fluid pressure transfer function, and then the equivalent operating fluid level of the ink that in this ink supply port, obtains.Ink level in other black chamber that the form of expression of this equivalent operating fluid level can be with this ink supply port fluid is communicated with.

Ink-jet printer of the present utility model mainly comprises three parts with continuous ink supply device, and what be connected with printhead is built in first print cartridge, ink-feeding tube on the printer carriage and second print cartridge that places the printer outside that is connected with first print cartridge by ink-feeding tube.Adopt the chamber wall maintenance nature contact condition of the inner ink storage chamber of the sponge outer surface and first print cartridge or the technical measures of gap contact condition, can guarantee that sponge does not produce crimp and compression, weaken ink the rocking in the inner ink storage chamber of first print cartridge because of sledge movements formation, reduce the surge that causes thus, avoid rocking the stability that forms aeration printhead suction force because of ink to printhead.The horizontal level of the ink outlet port that first print cartridge is connected with printhead, be set to be higher than the horizontal level of the ink supply port that second print cartridge is connected with ink-feeding tube, make the ink in the inner ink storage chamber of first print cartridge obtain a stable negative pressure state, help keeping the pressure balance of ink, avoid causing printing bad because of the ink pressure variation in the inner ink storage chamber of first print cartridge to printhead.

The drawing explanation

Fig. 1 the utility model ink-jet printer continuous ink supply device first print cartridge STRUCTURE DECOMPOSITION schematic diagram.

Fig. 2 the utility model ink-jet printer continuous ink supply device first print cartridge cutaway view.

Fig. 3 the utility model ink-jet printer continuous ink supply device structural representation.

The specific embodiment

Fig. 1,2, the utility model ink-jet printer are placed in first print cartridge on the printer carriage with what continuous ink supply device adopted.It comprises loam cake 1, sponge 2 and cartridge body 6.

Loam cake 1 is used to seal the upper opening 61 of cartridge body 6, offers on it to irritate black hole 21 and ink entrance 22.Irritating black hole 21 and ink entrance 22 all communicates with the inside ink storage chamber of cartridge body 6.Irritate black hole 21 and stopped up by plug usually, only when first can ink, just be unlocked.

Sponge 2 roughly is cuboid, and it is provided with some pores.

Cartridge body 6 outward appearances roughly are cuboid.One of the sidewall that it is vertical outer surface is provided with chip accommodation section 7.Offer the ink outlet port 5 that communicates with ink storage chamber on its diapire.In ink outlet port 5 inner chambers filter screen 3 is set, this filter screen 3 has certain distance to porous porous medium sponge 2 in the face of between the surface of ink outlet port 5, and the ink in the cartridge body 6 inner ink storage chambers flows into ink outlet port 5 by filter screen 3.In ink outlet port 5 port position sealing ring 4 is set, to keep ink outlet port 5 when printing and the connected state between the printhead, the perhaps closed condition during the print cartridge accumulating.

The chamber wall of sponge 2 outer surfaces and cartridge body 6 inner ink storage chambers keeps the nature contact condition, also can be the gap contact condition.

Under the installment state, the horizontal level of ink entrance 22 is higher than the horizontal level of ink outlet port 5.

Referring to Fig. 3, cartridge body 6 is communicated with second print cartridge 8 by ink-feeding tube 9 via ink entrance 22.Installing and using state, the horizontal level of the ink outlet port 5 that is connected with printhead is higher than the interior ink operating fluid level of ink supply port that second print cartridge 8 is connected with ink-feeding tube 9.Here second print cartridge 8 can use the constant voltage continuous ink feeding device of CN200420067639 patent disclosure, is higher than the design effect of ink operating fluid level in second print cartridge, 8 ink supply ports with the horizontal level that obtains above-mentioned ink outlet port 5.The inner chamber of second print cartridge 8 stores up black volume and has bigger storage area than the inside ink storage chamber of cartridge body 6, and perhaps second print cartridge 8 is provided with the pouring ink hole that can replenish ink.Can be by this pouring ink hole in working order down to the additional ink of the inner chamber of second print cartridge 8.Like this, can under the situation of the cartridge body 6 that need not to dismantle first print cartridge, finish the ink perfusion, thereby make full use of the design service life of first print cartridge and corresponding printhead component parts.

Claims

1. ink-jet printer continuous ink supply device, comprise first print cartridge that is used for to the printhead of described ink-jet printer supply ink, ink-feeding tube, porosity and looseness medium and to second print cartridge of described first print cartridge supply ink, described porosity and looseness medium is positioned in the inside ink storage chamber of described first print cartridge, be communicated with by described ink-feeding tube between inner ink storage chamber of described first print cartridge and described second print cartridge, it is characterized in that the chamber wall of the inner ink storage chamber of described porosity and looseness medium outer surface and described first print cartridge keeps nature contact condition or gap contact condition.

2. ink-jet printer continuous ink supply device according to claim 1 is characterized in that described porosity and looseness medium is a sponge.

3. ink-jet printer continuous ink supply device according to claim 2 is characterized in that the ink outlet port horizontal level that described first print cartridge is connected with described printhead is higher than the interior ink operating fluid level of ink supply port that described second print cartridge is connected with described ink-feeding tube.

4. ink-jet printer continuous ink supply device according to claim 3, it is characterized in that the cross section that flows to perpendicular to ink in described first print cartridge and the ink outlet port that described printhead is connected is provided with filter screen, described filter screen to described porosity and looseness medium has a predefined distance in the face of between the surface of described ink outlet port.