CN201597251U

CN201597251U - Ink box

Info

Publication number: CN201597251U
Application number: CN2010201220684U
Authority: CN
Inventors: 徐长江; 吴泽
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Print Rite Technology Development Co Ltd of Zhuhai
Priority date: 2010-03-03
Filing date: 2010-03-03
Publication date: 2010-10-06
Anticipated expiration: 2020-03-03

Abstract

An ink box comprises a box body, an ink chamber, an ink supplying port, a detection chamber and a float, wherein the ink chamber is positioned inside the box body and containing ink; the ink supplying port is used for supplying the ink inside the ink chamber for the outside; the detection chamber is communicated with the ink chamber in open mode; and the float is positioned inside the ink chamber and provided with a shading part which is positioned inside the detection chamber. The float of the ink box has large volume and weight, and can accurately indicate information of ink in the ink box without being affected by surface tension and bubbles of the ink.

Description

Print cartridge

Technical field

The utility model relates to a kind of print cartridge, especially a kind of print cartridge that is used for ink-jet printer.

Background technology

During ink-jet printer work, utilize nozzle on print media, to spray ink and form image.One all removably is equipped with print cartridge in this kind printer, and print cartridge provides ink for printer, and after the ink printed in the print cartridge was intact, the print cartridge that more renews was proceeded print job.After preventing that ink printed is intact, air enters printhead from print cartridge, influences print quality and printhead is damaged, and one printer and print cartridge are provided with the surplus that ink in the print cartridge detects in testing agency.

Patent documentation CN200410083213 discloses a kind of print cartridge with light detecting mechanism, and the detection light that printer sends be blocked or do not blocked in its testing agency can along with the consumption of ink.The printer of using this kind print cartridge has optical sender structure and optical receiver, the detection light that the optical sender structure sends is through after the testing agency of print cartridge, if the testing agency of print cartridge shelters from detection light fully, then the optical receiver of printer does not receive detection light, thereby produces the signal that is full of ink in the print cartridge; If testing agency's partial occlusion of print cartridge firmly detects light, then the optical receiver of printer can only detect light by receiving unit, thereby produces the signal that ink reduces in the print cartridge; When the testing agency of print cartridge occlusion detection light time not fully, the optical receiver of printer receives detection light fully, thereby produces the signal that does not have ink in the print cartridge.This kind print cartridge has ink chamber, is provided with testing agency in the ink chamber, and testing agency comprises the tilting member that can pivot, and the one end is provided with light-blocking part, and the other end is provided with float.When the print cartridge that is full of ink is mounted to printer, its light-blocking part blocks the detection light of printer fully, when the consumption of ink in the print cartridge to float from ink level behind the emersion, float is descending along with the consumption of ink, the drive tilting member rotates, and the light-blocking part of the tilting member other end then correspondingly moves upward, thereby reduces detecting blocking of light, light-blocking part is by producing corresponding signal to printing blocking of machine testing light, and printer is judged the surplus of ink in the ink chamber in view of the above.This kind print cartridge can detect the quantity of ink in the ink chamber exactly, but structure is too complicated, makes that the manufacturing cost of print cartridge is higher.

For simplifying technology and reducing cost, a kind of print cartridge is disclosed among the patent documentation CN200610124020, as shown in Figure 1, ink chamber 11 in print cartridge 1 is separated out a sensing chamber 13, a buoy 12 of making of light-proof material is set in the sensing chamber 13, is used for when ink is arranged, blocking the detection light that printer sends.This kind print cartridge technology is simple, and production cost is low.But, because the restriction in sensing chamber space makes buoy 12 too small; buoy 12 is subjected to the influence of other factorses such as the interference of ink surface tension or liquid viscous force easily; make buoy 12 be adsorbed on sensing chamber's inner wall surface; not descend with liquid level; in addition; when print cartridge is squeezed in transportation; after vibration or other reason make sensing chamber enter gas; forming bubble 4 hangs on sensing chamber's inwall, as shown in Figure 2, when installation is used; wall built-up bubble 4 can stop buoy 12 come-ups or whereabouts; thus buoy 12 can't correctly provide the time of day of ink water level in the ink chamber, sends rub-out signal, and then influence PRN device work.

Summary of the invention

The purpose of this utility model be to provide a kind of simple in structure, production cost is low, is not subjected to the surface tension of ink and the print cartridge of aeration during detection.

For this reason, the utility model provides following technical solution: print cartridge comprises: box body; Ink chamber is positioned at box body inside, holds ink in it; Ink supply port is used for the ink in the ink chamber is outwards provided; Sensing chamber is with ink chamber's open communication; Buoy is positioned at ink chamber and has the light shielding part that is positioned at sensing chamber.

The restriction of subject printer detection position, sensing chamber is less relatively, and the space of ink chamber is much bigger, after ink chamber and the sensing chamber's open communication; the buoy major part is positioned at ink chamber, its light shielding part that is used for ink detection is positioned at sensing chamber, and compares in buoy is limited in sensing chamber; the volume and the quality of buoy increase greatly, thereby can overcome the surface tension and the influence of air bubbles of ink.

More concrete scheme is, buoy comprises the buoyancy tank that is positioned at the middle part, and to the overhanging anti-dazzling screen in both sides, wherein light shielding part is the part of anti-dazzling screen by buoyancy tank, and the thickness of buoyancy tank is greater than the thickness of anti-dazzling screen.Because sensing chamber is arranged between PRN device light radiating portion and the light receiving part, its thickness is very limited, the thickness that is arranged on buoy light shielding part wherein must be less than the thickness of sensing chamber, and the buoy middle part is positioned at ink chamber, the thickness of ink chamber is greater than the thickness of sensing chamber, thereby the thickness of buoyancy tank can be greater than the thickness of buoy anti-dazzling screen.This kind setting further strengthens the volume of buoy and quality, thereby is subjected to ink surface tension and influence of air bubbles littler.

Scheme is the thin-walled chamber that buoyancy tank is arranged to have opening more specifically, and opening part can be used diaphragm seal, thereby the buoyancy of buoy is further strengthened.

Another more specifically scheme be that buoyancy tank outside arris is provided with vertical outer fin, when so setting can make buoyancy tank contact with the ink locular wall for linearity contacts, thereby be subjected to the influence of ink viscous force little.

Another more concrete scheme is to be provided with the restriction portion of restriction buoy moving range in ink chamber and the sensing chamber.In order to detect quantity of ink accurately, buoy is restricted to and can moves in certain scope.Be stuck in ink chamber or the sensing chamber for preventing that buoy from spending greatly because of skew angle, restriction portion also comprises the chamfered portion at restriction buoy angle of inclination.

Print cartridge of the present utility model, because all increases greatly of the volume of buoy and quality, thereby buoyancy also increases greatly, can overcome the resistance that ink surface tension and bubble produce, thus detect quantity of ink in the print cartridge exactly.The utility model is simple in structure in addition, and technology is controlled easily, and production cost is low.

Description of drawings

Fig. 1 is the schematic diagram of existing print cartridge; Fig. 2 is that the A of Fig. 1 is to partial enlarged view; Fig. 3 is the stereogram of print cartridge of the present utility model; Fig. 4 is the cutaway view of print cartridge of the present utility model; Fig. 5 is the rearview of Fig. 4; Fig. 6 is the stereogram of buoy of the present utility model; Fig. 7 is the structural representation of buoy of the present utility model; Fig. 8 is the upward view of Fig. 7.

The specific embodiment

Below in conjunction with accompanying drawing embodiment of the present utility model is elaborated.

Extremely shown in Figure 5 as Fig. 3, print cartridge 2 has the box body of being made up of roof 211, diapire 212, the first side wall 213, second sidewall 214, the 3rd sidewall 215 and the 4th sidewall 216 21, be respectively arranged with print cartridge 2 on roof 211 and the diapire 212 and be mounted to leader 211a, the 212a of printer, second sidewall 214 is provided with print cartridge 2 when installing grip portions 214a and 214b.Ink supply port 3 is positioned at the bottom of the first side wall 213, and sensing chamber 26 is positioned on the first side wall 213 and above ink supply port 3, wherein Fig. 4 for print cartridge 2 along the central shaft by ink supply port 3 and be parallel to the cutaway view of the 3rd sidewall 215 and the 4th sidewall 216.Have a plurality of partition walls 23 in the box body 21 box body is divided into a plurality of ink chamber 22,22 closed-loop layouts of a plurality of ink chamber are communicated with in twos by the siphon pipe 24 that is provided with on the 4th sidewall 216 therebetween.Being configured to of siphon pipe 24: the outside at the 4th sidewall 216 has stria, two ends are communicated with two ink chamber in a plurality of ink chamber 22 by aperture 24a, at the outside of stria welding film, thereby form the interface channel between these two ink chamber, a plurality of ink chamber 22 are cascaded by a plurality of siphon pipes 24, and the capillarity that makes full use of siphon pipe 24 makes the ink in the ink chamber consume successively from the ink chamber that flows to the upstream of ink supply port 3 by the order of series connection.Air inlet 32 is arranged on the 3rd sidewall 215 with ink filling port 31, the 22b of ink chamber that is connected with air inlet 32 is provided with the labyrinth type inlet channel, gas can be entered at an easy rate and ink be difficult for to reflux because of being subjected to capillary the influence, the 22b of ink chamber is positioned at the upstream of above-mentioned series sequence.The 22a of ink chamber is communicated with ink supply port 3, and in print procedure, the ink in other ink chamber enters in the 22a of ink chamber that is in downstream successively by siphon pipe 24, thereby the ink in the 22a of ink chamber is run out of at last.

Sensing chamber 26 and the 22a of ink chamber open communication, buoy 25 is positioned at sensing chamber 26 and the 22a of ink chamber, is made up of anti-dazzling screen 251 and buoyancy tank 252, and wherein anti-dazzling screen 251 is made by light-proof material.The restriction portion that in 22a of ink chamber and sensing chamber 26, all has restriction buoy 25 range of movement, wherein in sensing chamber 26, be provided with restriction portion 261 and following restriction portion 262, in the 22a of ink chamber, be provided with the restriction face 233 at restriction portion 231, following restriction portion 232 and restriction buoy 25 angles of inclination, in addition, the side 263 in the sensing chamber 26 and the mobile restriction that plays of 234 pairs of buoy 25 left and right directions in side in the 22a of ink chamber make the light shielding part of anti-dazzling screen 251 (see figure 7)s be positioned at the detection position of sensing chamber 26.In the present embodiment, the last restriction portion 261 in the sensing chamber 26 is the wall from the sidewall projection of sensing chamber 26, and following restriction portion 262 and restriction face 233 directly form for sensing chamber's 26 inside surface of side wall; Last restriction portion 231 in the 22a of ink chamber be the wall from sidewall 215 upper process, and following restriction portion 232, restriction face 233 and 234 are the surfaces of partition wall 23 in the 22a of ink chamber of the formation 22a of ink chamber.The detection position that can make the light shielding part of anti-dazzling screen 251 be arranged in sensing chamber 26 is understandable that these restriction portions also have the set-up mode of other form, as long as also can prevent effectively that buoy 25 is in the undesirable inclination of the unlikely generation of dynamic process or stuck.When being full of ink in the print cartridge 2; buoy 25 is at the buoyancy float downward; be subjected to restriction portion 261 and 231 restrictions of last restriction portion and be positioned at these two restriction subordinate sides; thus the light shielding part of anti-dazzling screen 251 in sensing chamber 26 stops the detection light that printer sends fully, and printer is shown as the state that is full of ink in the print cartridge 2; After being consumed to buoy 25 and exposing and swim on the liquid level in the 22a of ink chamber, buoy 25 beginnings descend along with the decline of liquid level, and anti-dazzling screen 251 can only partly stop the detection light time that printer sends, and printer will send the few information of quantity of ink in the print cartridge 2; When ink water level in the print cartridge 2 arrives theoretic using up, anti-dazzling screen 251 falls in the following restriction portion 262 of sensing chamber, and/or buoyancy tank 252 falls in the following restriction portion 232 of the 22a of ink chamber, thereby can not stop the detection light that printer sends, printer will demonstrate the signal that ink is used up, and print cartridge 2 is changed in prompting.Print cartridge 2 is squeezed in transportation, when tilting, inclined-plane 233 in the 22a of ink chamber can prevent effectively that buoy 25 is excessive and stuck in the 22a of ink chamber because of the angle of inclination, thereby when being mounted to printer, print cartridge 2 can return to the detection position, to carry out the detection of ink water level.In addition, the end of light shielding part 251 in ink chamber can be provided with fillet, also can prevent the generation of buoy 25 stuck phenomena.

In the prior art, buoy 12 is limited in the sensing chamber 13, and volume and quality are limited to spatial constraints and can not be too big, thereby are subjected to ink surface tension and influence of air bubbles easily.Compared with prior art, the utility model is owing to sensing chamber 26 and the 22a of ink chamber open communication, and buoy 25 extends in the 22a of ink chamber from sensing chamber 26, and this makes the relative increase with quality of buoy 25 volumes become possibility.After the volume of buoy 25 and quality increased, the weight of buoy 25 and buoyancy can overcome the surface tension and the influence of air bubbles of ink, thereby can detect the ink water level in the print cartridge 2 exactly.In addition, after the inversion in the transportation, vibration or other reason make sensing chamber 26 enter gas, because sensing chamber 26 and the 22a of ink chamber open communication, after print cartridge 2 is mounted to PRN device, gas in the sensing chamber 26 is more prone to enter in the 22a of ink chamber, and is difficult for resting on the inwall of sensing chamber 26.

For further increasing the volume and the quality of buoy 25, be provided with buoyancy tank 252 at the middle part of buoy 25, extremely shown in Figure 8 as Fig. 6.Because buoyancy tank 252 is positioned at the 22a of ink chamber, the thickness of the 22a of ink chamber is greater than the thickness of sensing chamber, thereby the thickness T 1 of buoyancy tank 252 makes buoy 25 easier balances greater than the thickness T 2 of anti-dazzling screen 251, is subjected to the interior liquid fluctuating of the 22a of ink chamber to influence little.Buoyancy tank 252 is set to the thin-walled chamber, and Open Side Down, and opening part can be welded with diaphragm seal 253, and this kind setting further strengthens buoy 25 suffered buoyancy, thereby guarantees the accuracy that buoy 25 detects.Four side ribs 254 in buoyancy tank 252 outsides are provided with vertical outer fin, thereby when buoyancy tank 252 contacts with the 3rd sidewall 215 or the 4th sidewall 216, be linear contact, and the side of buoyancy tank and sidewall are sticked together, thereby be subjected to the influence of ink viscous force less.The thickness T 1 of buoyancy tank 252 and the thickness T 2 of anti-dazzling screen 251 are set to when the 3rd sidewall 215 of the side 254 of buoyancy tank 252 and print cartridge 2 or the 4th sidewall 216 contact, the sidewall of the light shielding part of anti-dazzling screen 251 and sensing chamber 26 has certain interval, the light shielding part of anti-dazzling screen 251 is not contacted with the sidewall of sensing chamber 26, thereby be not subjected to the influence of ink viscous force.

More than be preferred embodiment of the present utility model, the utility model includes but not limited to this, and the technical scheme of modes such as all employing equivalent transformations all drops in the protection domain of the present utility model.

Claims

1. print cartridge comprises

Box body;

Ink chamber is positioned at described box body inside, holds ink in it;

Ink supply port is used for the ink in the described ink chamber is outwards provided;

It is characterized in that:

Sensing chamber, described sensing chamber and described ink chamber open communication;

Buoy, described buoy are positioned at described ink chamber and have the light shielding part that is positioned at described sensing chamber.

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

Described buoy comprises the buoyancy tank that is positioned at the middle part, reaches by buoyancy tank to the overhanging anti-dazzling screen in both sides;

Described light shielding part is the part of described anti-dazzling screen;

The thickness of described buoyancy tank is greater than the thickness of described anti-dazzling screen.

3. print cartridge according to claim 2 is characterized in that: described buoyancy tank has a thin-walled chamber, and described thin-walled chamber has an opening.

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

It is described that Open Side Down is provided with.

5. print cartridge according to claim 4 is characterized in that:

Described opening is by a diaphragm seal.

6. print cartridge according to claim 2 is characterized in that:

Described buoyancy tank outside arris is provided with vertical outer fin.

7. according to each described print cartridge of claim 1 to 6, it is characterized in that:

Be provided with the restriction portion of the described buoy moving range of restriction in described ink chamber and the described sensing chamber.

8. print cartridge according to claim 7 is characterized in that:

Described restriction portion comprises restriction portion and following restriction portion.

9. print cartridge according to claim 7 is characterized in that:

Described restriction portion comprises the chamfered portion at the described buoy of restriction angle of inclination.