CN2918067Y

CN2918067Y - Ink box

Info

Publication number: CN2918067Y
Application number: CN 200620060238
Authority: CN
Inventors: 李贵清
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Print Rite Technology Development Co Ltd of Zhuhai
Priority date: 2006-06-09
Filing date: 2006-06-09
Publication date: 2007-07-04
Anticipated expiration: 2016-06-09

Abstract

The utility model relates to an ink box, comprising a box body with an ink storage cavity, an ink supply cavity and a gas-guide hole connected the ink storage cavity and the outside, the bottom wall of the box body is provided with an ink supply port connected with the ink storage cavity and has an internal seal ring. An ink channel and a refluxing channel are positioned between the ink storage cavity and the ink supply cavity, the air in the ink supply cavity is discharged to the ink storage cavity through the refluxing channel. The exchange of gas and liquid between the ink storage cavity and the ink supply cavity are processed respectively on different channels, therefore the ink supply and gas discharge in the ink supply cavity are smoother, and the ink box maintains continuance and stabilization.

Description

Print cartridge

Technical field

The utility model relates to the ink supply apparatus that ink-jet printer is used, the particularly a kind of print cartridge that can get rid of the ink supply intracavity gas.

Background technology

Settle the print cartridge of porous body with the absorption ink in ink storage chamber, because of porous body takies the certain volume of ink storage chamber, print cartridge storage quantity of ink is little; In addition, print cartridge uses when last, and always some ink is adsorbed in the porous body and can not be printed head and effectively utilizes.This kind print cartridge owing to there is above-mentioned shortcoming, is just progressively replaced by no porous body print cartridge.Owing to cancelled porous body, regulate the interior pressure of ink storage chamber with a pressure regulating mechanism usually in the no porous body print cartridge, to realize the constant voltage ink supply.

In existing no porous body print cartridge, a kind of structure is to open the channel cross-section that is communicated with ink storage chamber and ink supply chamber bigger.Ink supply was smooth and easy when this print cartridge can guarantee to print, and can get rid of the air in the ink supply chamber preferably, but shortcoming is, printhead drives print cartridge back and forth during fast moving, ink in the ink storage chamber is interfered the work generation of printhead with the vibration of the mobile generation of print cartridge, thereby influences print quality.Another kind of structure is the cross section that reduces to be communicated with ink storage chamber and ink supply chamber passage, and what have also opens passage very long, and the centre also has a plurality of complications.Though the print cartridge of this structure can be avoided the generation of above-mentioned situation, once there is gas to enter the ink supply chamber, just is difficult to or even can't gets rid of, printhead sucks the gas in the ink supply chamber, print quality problems such as broken string, a China ink will occur printing.

Summary of the invention

Main purpose of the present utility model provide a kind of simple in structure, can effectively get rid of the ink supply intracavity gas, give the print cartridge of the continual and steady ink supply of printhead.

For achieving the above object, the technical solution adopted in the utility model is: print cartridge comprises the box body with ink storage chamber and ink supply chamber, box portion bottom wall is provided with and is communicated with the ink supply chamber and the ink supply port of built-in sealing ring, box body is provided with and is communicated with ink storage chamber and extraneous gas port, and ink storage chamber is introduced air by gas port from the external world.Be provided with Mo Dao and return flow line between ink storage chamber and the ink supply chamber, the ink in the ink storage chamber enters the ink supply chamber by black road, and provides to printer by ink supply port, because a variety of causes appears at the ink supply intracavity gas and then can be discharged to ink storage chamber by the return flow line.

By above scheme as seen, set return flow line can be effectively be discharged to ink storage chamber with gas or the foam that contains gas from the ink supply chamber, rather than row has improved print quality greatly, and prevented the damage of printhead to printhead.

Further scheme is, with the outlet of return flow line in the ink supply chamber be provided with than the inlet height of black road in the ink supply chamber, like this, the gas in the ink supply chamber can successfully be arranged to ink storage chamber, the while can not stopped up black road again.

Further scheme can also be provided with a position of splitter between ink storage chamber and ink supply chamber, and the return flow line that Mo Dao and position are higher than black road all is located on the position of splitter.Because Mo Dao and return flow line exist difference in height in vertical direction, past high position owing to gas rises and the past physical characteristic of hanging down bit flow of liquid again, ink in the ink storage chamber enters the ink supply chamber by lower black road, position, and the gas in the ink supply chamber then is discharged to ink storage chamber by higher return flow line, position.

The utility model is provided with black road and return flow line between ink storage chamber and ink supply chamber, the exchange of gas liquid between ink storage chamber and the ink supply chamber is separated, make ink replenishing and air scavenge in the ink supply chamber more smooth and easy, all the time be full of ink in the ink supply chamber and do not have the gas existence, thereby print cartridge keeps continual and steady ink supply.

Description of drawings

Fig. 1 is the vertical cut-away view of the utility model embodiment;

Fig. 2 is the partial enlarged drawing of Fig. 1;

Fig. 3 is a position of splitter vertical view among Fig. 1;

Fig. 4 is another embodiment partial enlarged drawing of the utility model;

Fig. 5 is a position of splitter vertical view among Fig. 4.

The utility model is described in further detail below in conjunction with two embodiment.

The specific embodiment

Referring to Fig. 1, print cartridge comprises by lower box body 1 and cover 2 and covers the box body that the outline that forms is substantially cuboid that the diapire of lower box body 1 is provided with the ink supply port 13 of built-in sealing ring 3.Ink storage chamber 11 and an ink supply chamber 12 of giving the printhead ink supply of a storage ink are arranged in the box body, and ink supply chamber 12 is communicated with ink supply port 13.Have the gas port 21 that is communicated with ink storage chamber 11 and atmosphere on the cover 2.Position of splitter 14 is arranged between ink storage chamber 11 and the ink supply chamber 12, and position of splitter 14 is a taper plate of just putting, and the vertex of a cone is in ink storage chamber 11 on the internal face of box portion bottom wall at the awl end.Position of splitter 14 can be one-body molded with lower box body 1, also is fixed on the lower box body 1 after the moulding separately.Have a return flow line 141 on the vertex of a cone, have a pair of black road 142 near the awl taper wall at the end, return flow line 141 and Mo Dao 142 are manhole.Ink in the ink storage chamber 11 enters ink supply chamber 12 by black road 142, as shown in Figure 2, arrow A; Gas in the ink supply chamber 12 then is discharged to ink storage chamber 11 by return flow line 141, shown in Fig. 2 arrow B.

Have a cylindrical pressure to regulate chamber 15 in the print cartridge, pressure regulating cavity 15 1 ends communicate with atmosphere by gas port 21, and the other end is communicated with ink storage chamber 11 by the intercommunicating pore on the pressure regulating cavity 15 chamber walls 16.The pressure adjusting part that is made of spring 41 and piston 42 is built in the pressure regulating cavity 15.Spring 41 1 ends are fixed on the diapire of lower box body 1, and the other end connects piston 42.The internal face of the circumferential profile of piston 42 and pressure regulating cavity 15 is complementary, and forms little matched in clearance.Ink in the pressure regulating cavity 15 infiltrates little gap, plays sealing and lubricated effect.Piston 32 can move up and down in pressure regulating cavity 15.During the print cartridge internal and external pressure balance, gas port 21 and intercommunicating pore 16 lay respectively at the both sides of piston 41.

When printer was worked, printhead is 12 absorption inks from the ink supply chamber, and the inks in the ink storage chamber 11 enter ink supply chamber 12 by the black road 142 on the position of splitter 14, replenish used up ink at any time.And the gas in the ink supply chamber 12 is discharged to ink storage chamber 11 by return flow line 141.Along with the ink in the print cartridge constantly is consumed, in ink storage chamber 11, form negative pressure, when negative pressure reached certain numerical value, piston 42 was under the atmospheric effect in the external world, and the thrust that overcomes spring 41 moves downward.When piston 42 moved to its upper wall surface and is lower than intercommunicating pore 16 upper marginal positions, atmosphere entered ink storage chamber 11 through gas port 21 and intercommunicating pore 16.Gas in the ink storage chamber 11 is replenished, pressure rises, and piston 42 up moves.The upper wall surface of piston 42 is crossed the top edge of intercommunicating pore 16, and on intercommunicating pore 16 was blocked, the passage that atmosphere enters ink storage chamber 11 was cut off.Ink in the ink storage chamber 11 continues to be consumed, and piston 32 repeats said process.So move in circles, the pressure in the ink storage chamber 11 is constantly adjusted, and print cartridge keeps the constant voltage ink supply.

In addition, the embodiment that other can also be arranged according to the utility model design, under the constant situation of other structures, the structure of position of splitter 14 can also be as shown in Figure 4 and Figure 5, position of splitter 14 is the flat board that an inclination is placed on

ink storage chamber

11 and 12 passwaies, ink supply chamber, have the return flow line 141 and the Mo Dao 142 of manhole shape on flat board, return flow line 141 and Mo Dao 142 are on different horizontal planes, and return flow line 141 is comparatively near ink storage chamber 11.Ink in the ink storage chamber 11 flows into ink supply chamber 12 by black road 142, shown in Fig. 4 arrow A; Gas then is discharged to ink storage chamber 11 by return flow line 141 in the ink supply chamber 12, shown in Fig. 4 arrow B.

Claims

1, print cartridge comprises

Box body with ink storage chamber and ink supply chamber, box portion bottom wall are provided with and are communicated with the ink supply chamber and the ink supply port of built-in sealing ring;

Be communicated with ink storage chamber and extraneous gas port;

Be communicated with by black road between ink storage chamber and the ink supply chamber;

It is characterized in that:

Mo Daonei is provided with one makes the ink supply intracavity gas be back to the return flow line of ink storage chamber.

2, print cartridge according to claim 1 is characterized in that:

The outlet of described return flow line in the ink supply chamber is higher than the inlet of black road in the ink supply chamber.

3, print cartridge according to claim 2 is characterized in that:

Be provided with a position of splitter between described ink storage chamber and the ink supply chamber, position of splitter is provided with Mo Dao and return flow line.

4, print cartridge according to claim 3 is characterized in that:

Described position of splitter is one and just putting the taper plate, and described return flow line is the through hole that is located at the vertex of a cone, and described black road is the through hole that is located on the awl wall.

5, print cartridge according to claim 3 is characterized in that:

Described position of splitter is an inclined planar, and described return flow line and black road are the not through holes on same horizontal plane of dull and stereotyped ' two of going up.