CN201109238Y

CN201109238Y - Cartridge

Info

Publication number: CN201109238Y
Application number: CNU2007200588875U
Authority: CN
Inventors: 黄振超; 陈达飞
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Print Rite Technology Development Co Ltd of Zhuhai
Priority date: 2007-10-23
Filing date: 2007-10-23
Publication date: 2008-09-03
Anticipated expiration: 2017-10-23

Abstract

The utility model relates to an ink-jet recording device such as an ink box for an ink-jet printer, in particular to the ink box which monitors the inside ink remained amount through a pressure sensor arranged internally. The ink box comprises an ink storing cavity enclosed by the ink box outside wall for containing and storing ink, an air inlet port for charging air in the ink storing cavity, an ink outlet port for supplying the ink to a printer, and the pressure sensor which is connected with an ink box chip, wherein, the sensor is positioned at the bottom part of the ink storing cavity, a floating mark which floats on the ink surface is perpendicularly arranged above the sensor, and an opening port which can contain the sensor is arranged at the lower part of the floating mark. The cost of the ink box is saved owing to the removal of an ink bag, and the structure is simultaneously simplified.

Description

Print cartridge

Technical field

The utility model relates to for example print cartridge of ink-jet printer use of ink jet recording device, particularly passes through the print cartridge of the inner pressure sensor monitoring internal ink surplus that is provided with.

Background technology

A kind of print cartridge of existing band China ink bag as shown in Figure 1.Be provided with pressure sensor 3 in this print cartridge, the exit portion of China ink bag 2 is placed in outside the rigidity original paper, and pressure sensor 3 is placed in this rigidity original paper, in order to detect the pressure of ink, and will be from the ink that China ink bag 2 flows out through pressure sensor 3.When printer began to print, printer inflation between print cartridge outer wall 1 and China ink bag 2 shown in filled arrows among the figure, increased the print cartridge pressure inside.China ink bag 2 is because the effects of air pressure are crushed out of shape, and ink is subjected to very big pressure and flows to the ink outlet port 5 of print cartridge from the outlet of China ink bag 2, is depicted as the ink flow direction as figure hollow core arrow.When sensor 3 detected ink pressure, print cartridge can normally be printed.Otherwise when the ink in the China ink bag 2 is depleted, the pressure in the China ink bag 2 will be reduced to minimum or be disappeared, and pressure sensor 3 detects less than pressure.And sending this information to printer, printer can judge that just the ink in the print cartridge has been printed, thereby requires to change print cartridge.

Summary of the invention

The purpose of this utility model provides a kind of low cost, print cartridge simple in structure.

For achieving the above object, the utility model provides following technical scheme: print cartridge comprises

The ink storage chamber that is used to hold and lay in ink that surrounds by the print cartridge outer wall;

The air inlet that is used in ink storage chamber, inflating;

Ink outlet port to printer ink-providing;

Be connected in the pressure sensor on the ink box chip;

Wherein,

Described sensor is positioned at the ink storage chamber bottom, is provided with the buoy that floats on ink surface in the sensor vertical direction, and the buoy bottom has can hold the uncovered of described sensor.

The utility model print cartridge has compared with prior art been removed black bag, and ink is loaded in the airtight ink storage chamber.Correspondingly, pressure sensor is changed into from the ink exit of China ink bag be arranged on the ink storage chamber bottom.When ink is finished using in the ink storage chamber, buoy fall along with the decline of ink ink storage chamber bottom and the most at last pressure sensor block, pressure sensor does not have pressure signal to import ink box chip into.Chip sends this information to printer, and printer can judge that just the ink in the print cartridge has been printed, thereby requires to change print cartridge.This Ink cartridge with structure provides cost savings owing to having removed black bag, also simplifies the structure simultaneously.

Further technical scheme is:

Two baffle plates surround the buoy spacing zone, this spacing zone bottom and ink storage chamber conducting.

Described pressure sensor is arranged on the support, and the buoy bottom has can hold the uncovered of described support.And on described support, be with sealing ring.

Make the buoy spacing zone with baffle plate and can prevent that buoy from laterally moving, avoid buoy when dropping to the ink storage chamber bottom along with liquid level, can't cover pressure sensor.With the pressure sensor setting with have on the support of sealing ring, and on buoy, make corresponding with supporting structure, can guarantee like this can be effectively more isolated with pressure sensor and ink when buoy falls, and is that pressure sensor does not receive pressure, thereby improves the accuracy of inkless warning.

Description of drawings

Fig. 1 is a kind of structure diagram of prior art print cartridge;

Fig. 2 is the structure diagram of the utility model print cartridge embodiment.

The utility model is described in further detail below in conjunction with drawings and Examples.

The specific embodiment

Referring to Fig. 2, Fig. 2 is the structure diagram of present embodiment print cartridge.This print cartridge comprises the ink storage chamber 10 that is used to hold and lay in ink that is surrounded by print cartridge outer wall 11; The air inlet 15 that is used for inflation in ink storage chamber 10; Ink outlet port 16 to printer ink-providing; And, be connected in the pressure sensor 12 on the ink box chip (figure does not show).Between print cartridge outer wall 11 and ink storage chamber 10, constitute the inlet channel 20 that connects air inlet 15 and ink storage chamber 10, lead to ink storage chamber 10 places at inlet channel 20 and be provided with check valve 17.This check valve 17 allows gas to enter ink storage chamber 10 from described air inlet 15, and prevents that gas and ink in the ink storage chamber 10 from flowing out to inlet channel 20.Ink storage chamber 10 also is connected with an end that goes out ink passage 21, and this other end that goes out ink passage 21 connects ink outlet port 16.Pressure sensor 12 is contained in the top of a conical stent 19, is with sealing ring 18 at the middle part of support 19.Buoy 13 is arranged directly over pressure sensor 12, and this buoy 13 can keep floating on ink surface, can descend with liquid level.These buoy 13 bottoms have with support 19 shapes corresponding uncovered 131, guarantee can accommodate support 19 in uncovered 131 when buoy 13 falls to ink storage chamber 10 bottoms.For preventing that buoy 13 from laterally moving, and is provided with 14, two baffle plates 14 of two baffle plates and surrounds a buoy spacing zone, the bottom of this buoy spacing zone and ink storage chamber 10 conductings in ink storage chamber 10.In print procedure, along with the consumption of ink, ink storage chamber 10 China and Mexico's water levels reduce gradually, and buoy 13 is along with reduction.When ink exhausts substantially, buoy 13 sink to ink storage chamber 10 bottoms and with support 19 be housed in buoy 13 uncovered 131 in and by sealing ring 18 sealing, pressure sensor 12 completely cut off substantially with ink and detected less than pressure this moment.The ink box chip that is connected with pressure sensor 12 can be passed to printer with this information, thereby it is inkless to discern this print cartridge, and prompting more renews print cartridge.

Certainly, the structure of the utility model print cartridge composition is not limited to above-mentioned embodiment.For example, above-mentioned support is not limited to taper shape, and other are all passable such as shapes such as cylindrical, cuboid, squares, as long as the uncovered shape of buoy is corresponding with it.In a word, do conspicuous change according to the prompting of the foregoing description and other every changes that does not break away from essence of the present invention all should be included within the described scope of claim.

Claims

1, print cartridge comprises

The air inlet that is used in ink storage chamber, inflating;

Ink outlet port to printer ink-providing;

Be connected in the pressure sensor on the ink box chip;

It is characterized in that,

2, according to the print cartridge of claim 1,

It is characterized in that:

3, according to the print cartridge of claim 1,

It is characterized in that:

Described pressure sensor is arranged on the support, and described buoy bottom uncovered holds described support.

4, according to the print cartridge of claim 3,

It is characterized in that:

Described support is conical.

5, according to the print cartridge of claim 3 or 4,

It is characterized in that:

On described support, be with sealing ring.

6, print cartridge according to claim 1,

It is characterized in that:

One inlet channel connects described air inlet and passes through a check valve and ink storage chamber conducting.

7, according to the print cartridge of claim 1,

It is characterized in that:

One goes out ink passage connects described ink outlet port and ink storage chamber.