CN201151238Y - Ink box - Google Patents

Abstract

The utility mode discloses an ink box that is used for an ink-jet printer, which comprises a box body with an ink storage cavity, an ink-supply port that is used for supplying ink, and a communication cavity that is used for communicating the ink storage cavity and the ink-supply port; the communication cavity is separated from the ink storage cavity through a separation plate that is welded and fixed on the box body; the separation plate is provided with a communication port and an ink nozzle that is communicated with the communication port; a retaining valve is sleeved on the ink nozzle; both the ink nozzle and the retaining valve are arranged inside the communication cavity, wherein, a retaining-valve fixed device that is used for fixing the retaining valve when welding the separation plate is arranged inside the communication cavity. The retaining valve is fixed by the fixed device, so that the retaining valve is effectively prevented from being dropped off when welding the separation plate, thereby improving the quality of the ink box.

Description

Print cartridge

Technical field

The utility model relates to the print cartridge that a kind of ink-jet printer is used, particularly a kind of print cartridge that adopts check valve control ink to flow.

Background technology

With the matching used print cartridge of ink-jet printer, its primary structure comprises the ink storage chamber that is used to store ink, keeps the pore of air pressure balance with external environment condition, to the ink outlet port of the printhead ink supply of printer.In print procedure, in order to keep the sealed storage requirement of normal black liquid supply and ink, must make the ink in the print cartridge be in suitable negative pressure state, for realizing that this kind state adopts the technical measures of dual mode usually, in ink storage chamber, insert porous class material first, for example cavernous body keeps the ink sealing by capillary effect; Second utilize self frame for movement of print cartridge, be aided with suitable seal part or check valve.

In the ink-jet printer running, the print cartridge supporting with it, utilize print cartridge self frame for movement and do not use the print cartridge of sponge kind porous class thing especially merely, one of inking mode that it is common, insert in the print cartridge ink outlet port by the ink supply pin that will have black fluid through-hole exactly, the ink supply needle-penetration the ink outlet port end along or the inner chamber diaphragm seal or the diaphragm seal that are provided with, make black liquid flow into from ink outlet port that the mode of the black fluid through-hole the ink supply pin realizes.Usually the ink supply pin adopts hardness or the very large metal material preparation of intensity, and print cartridge then adopts hardness or the bigger plastics preparation of intensity.Therefore, ink supply pin and print cartridge all have bigger rigidity, and plasticity is relatively poor.Under this state, between ink supply pin and print cartridge, realize the transmission of black liquid, can also prevent that black liquid from leaking, and also must be equipped with necessary seal means simultaneously between ink supply pin and print cartridge ink outlet port.Common seal means normally is provided with sealing ring in ink supply port.Early stage ink-cases of printers often uses its middle part to have the sealing ring of through hole.But this sealing ring banding ink supply pin shank outer surface provides black liquid sealing function between shank and print cartridge ink outlet port, and the black liquid in the print cartridge can only be flowed out by the black fluid through-hole from the ink supply pin.This print cartridge frame mode, because sealing ring itself has through hole, cause in the print cartridge process is installed, can produce a spot of black liquid when removing the ink outlet port diaphragm seal reveals, and when the dismounting print cartridge, residual China ink in the print cartridge is sealing ring through hole outflow in vain also, forms working environment easily and pollutes, and stains recording mediums such as paper.Simultaneously since the ink supply pin inserting or extracting out in the print cartridge ink outlet port in a flash, can in ink outlet port, form bigger moment supercharging or the negative pressure of numerical value, cause ink excessive along the slit between the print cartridge member, perhaps return and scurry in the black chamber of storage along print cartridge inner chamber pipeline, perhaps be pressed into nozzle along ink supply pin internal ink road, reduce print quality, or damage printhead.

Existing sponge-free ink box is on being mounted to printer the time, and the ink supply pin pierces through the ink outlet port diaphragm seal and enters in the ink outlet port in the extremely short time.Because the volume in the ink outlet port is less relatively, the ink supply pin that inserts in it will cause the compression shock of big numerical value in short-term to the ink in the ink outlet port.The pressurized ink will follow that associated pipe discharges its increased pressure in the slit at ink outlet port position or the ink outlet port, promptly along the liquid road between ink storage chamber and ink outlet port, ink outlet port to the sealing off gap of box body outside and the ink flow line of printhead inside transmit.In the excessive situation of pressure, liquid road between ink storage chamber and ink outlet port and the ink outlet port sealing to the sealing off gap of box body outside will be destroyed, the lighter forms black liquid and reveals, and pollutes work top or printer, and the sealing property that weight person damages the ink interface channel causes print cartridge to scrap; Perhaps cause the ink flow duct of printhead inside excessive and impaired because of pressure.

Publication number be the Chinese utility model patent of CN2875810A at this problem, a kind of print cartridge that is applied to ink-jet printer with pressure relief function is provided, comprise at least one ink storage chamber, ink supply port and balance pipe.Ink storage chamber is used to hold and lay in ink; Ink supply port is positioned on the sidewall of print cartridge, is connected with ink storage chamber, is used for cooperating with the ink supply pin of ink-jet printer, to ink supply pin supply ink; Balance pipe is positioned on the sidewall of print cartridge, is communicated with ink storage chamber and atmosphere outside, under the state of ink storage chamber because of supply ink formation negative pressure gas is introduced ink storage chamber.Between described ink storage chamber and ink supply port, has an ink interface channel, be separated by by the dividing plate of a band connected entrance between this ink interface channel and the ink storage chamber, being formed with a China ink that communicates with described connected entrance on this dividing plate chews, this China ink is chewed and is arranged with a basketball valve, and described China ink is chewed with the basketball valve and all is positioned at this ink interface channel.Pressure in ink storage chamber is during greater than the pressure in the ink supply port, the basketball opening of valves ink interface channel in the ink interface channel; Pressure in ink storage chamber is during less than the pressure in the ink supply port, and the basketball valve in the ink interface channel cuts out the ink interface channel.Between ink supply port and ink storage chamber, also be provided with pressure regulator channel.In this pressure regulator channel, be provided with the basketball valve.Pressure in ink storage chamber is during greater than the pressure in the ink supply port, and the basketball valve closing presure in the pressure regulator channel is regulated passage; Pressure in ink storage chamber is during less than the pressure in the ink supply port, and the basketball valve opening pressure in the pressure regulator channel is regulated passage.By in above-mentioned print cartridge, being provided for the basketball valve that to adjust black road on off operating mode automatically of pressure release, the inherent ink supply pin of ink outlet port is inserted to be caused when ink pressure increases, can be along the pressure regulator channel at basketball valve place, the pressure augmenting portion is released in the ink storage chamber, and keeps balance with outside atmosphere.Thereby ink outlet port produces the phenomenon of ink leak when having avoided effectively changing ink-jet printer cartridge, has also avoided printhead because of bearing the generation of the excessive phenomenon that is damaged of ink pressure effectively.

At present when producing the print cartridge of said structure, it is that the mode of dividing plate by ultrasonic bonding is fastened on the box body of print cartridge that one procedure is arranged, because the basketball valve is the elasticity of dependence itself to be locked and to chew at the China ink of dividing plate, in the technical process of welding diaphragm, the surging that is sent by ultrasonic welding machine makes dividing plate produce double vibrations at a high speed in the horizontal direction, in this process, basketball valve on the dividing plate is also followed partition movement, and the movement velocity of basketball valve is less than the speed of dividing plate, relative motion appears, after welding is finished, the basketball valve tends to chew from the China ink of dividing plate and comes off, thereby make the basketball valve lose the effect of check valve, had a strong impact on the quality of print cartridge.And this type of print cartridge major part is black or grey, from also being difficult to judge whether the basketball valve comes off, and only just can test out after doing destructive test in appearance, to the work for inspection band great inconvenience.

Summary of the invention

The purpose of this utility model is to provide a kind of print cartridge that can prevent that its check valve from coming off.

For achieving the above object, the utility model provides a kind of print cartridge, comprises the box body with ink storage chamber; Be used for outwards supplying the ink supply port of ink; Be used to be communicated with the connected chamber of described ink storage chamber and ink supply port; Be separated by by a dividing plate that is fixedly welded on box body between described connected chamber and the ink storage chamber; The China ink that is formed with a connected entrance on the described dividing plate and communicates with this connected entrance is chewed, and this China ink is chewed and is arranged with a check valve; Described China ink is chewed with check valve and all is positioned at described connected chamber; Wherein, be provided with in the described connected chamber and be used for the check valve fixture of when welding diaphragm, described check valve being fixed.By this fixture check valve is fixed, thereby prevented that effectively check valve from coming off, and greatly improved the print cartridge quality when welding diaphragm.

Described check valve fixture can on the chamber wall that is fixed on described connected chamber, can laterally push two of described check valve card muscle, described two card muscle lay respectively at the both sides of check valve.Preferably, the rectangular triangle of described card muscle, its two right-angle sides are separately fixed on the sidewall and diapire of described connected chamber, and its hypotenuse contacts with the side extruding of described check valve, and the spacing of two card muscle hypotenuses narrows down from top to bottom gradually.During welding, ultrasonic welding machine presses down dividing plate, check valve on it contacts with the card muscle, continue to move downward and during horizontal vibration at dividing plate, the distance of card muscle and dividing plate shortens, two card muscle laterally push check valve, check valve is no longer vibrated with dividing plate, thereby play the effect that prevents that check valve from coming off.

In addition, described check valve fixture can also be for being formed on the collar flange that described China ink is chewed, and this collar flange is coated in the described check valve.Owing to be provided with above-mentioned collar flange, check valve frictional resistance is in the axial direction increased, come off thereby when vibration takes place dividing plate, be not easy to chew from China ink.

Description of drawings

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Fig. 1 is the box body front three-dimensional structure diagram of first kind of embodiment of the utility model;

Fig. 2 is the box body back side three-dimensional structure diagram of embodiment shown in Figure 1;

Fig. 3 is the box body vertical view of embodiment shown in Figure 1;

Fig. 4 is the A-A cutaway view of Fig. 3;

Box body schematic internal view when Fig. 5 is not shown dividing plate of embodiment shown in Figure 1 and check valve;

Fig. 6 is dividing plate and the check valve structural representation partly in the embodiment shown in Figure 1;

Fig. 7 is the structural representation of the partition part of second kind of embodiment of the utility model.

The specific embodiment

Fig. 1 and Fig. 2 illustrate the face shaping of first kind of embodiment of the utility model print cartridge respectively from front and back.This print cartridge is made ofbox body 1 and unshownedlid.Box body 1 and lid adopt the plastics preparation, and both are connected to an obturator by thermofussion welding or vibration melting welding, the inner corresponding chamber that forms.

As Fig. 1,box body 1 is flat cuboid, and an one lateral surface is provided withresilient handle 2 and chip installation area territory 3.Resilient handle 2 cooperates with corresponding construction on the cartridge carrier by the claw on it, provides the location to print cartridge.Near on the bottom surface of a side, be provided with theink supply port 11 that is communicated with box body inside atbox body 1;Box body 1 inside is separated intogas buffer chamber 12,ink buffer chamber 13 andink storage chamber 14 by two vertical dividing plates,ink storage chamber 14 belows also are separated out a connectedchamber 18 that is used to be communicated withink storage chamber 14 andink supply port 11 by as shown in Figure 3horizontal baffle 4, have a connectedentrance 41 that is used to be communicated withink storage chamber 14 and connectedchamber 18 on thishorizontal baffle 4.

As Fig. 2, the back side ofbox body 1 is provided with separate three grooves 15,16,17.The two ends of groove 15,16,17 are respectively by corresponding through hole and box body internal communication.After the open side with plastics glued membrane sealed groove 15,16,17, groove 15,16,17 and plastics glued membrane promptly constitute the inking pipeline to corresponding port or inner chamber.Wherein, groove 15 is used to be communicated withgas buffer chamber 12 andink buffer chamber 13, and groove 16 is used to be communicated withink buffer chamber 13 andink storage chamber 14, and groove 17 is used for being communicated with between connectedchamber 18 and theink supply port 11.

As Fig. 4 and Fig. 6, the below of dividingplate 4 is formed with a China ink that communicates with its connectedentrance 41 andchews 42, and this China ink is chewed and is arranged with acheck valve 5 on 42, Chinaink chew 42 andcheck valve 5 all be positioned at connected chamber 18.Thischeck valve 5 is roughly cylindrical elastomer, one end opening, other end sealing; It is near being formed with anotch slit 51 of running through sidewall on sidewall of blind end.By the opening or shrink of thisotch slit 51, can realize the unlatching ofcheck valve 5 or close.For the check valve fixture that prevents from thatcheck valve 5 from coming off when thewelding diaphragm 4, be provided with in the connectedchamber 18 to be used for when weldingdiaphragm 4, checkvalve 5 to be fixed.

Referring to Fig. 5, this check valve fixture is thecard muscle 6 that is fixed on two symmetrical distributions on the connectedchamber 18 chamber walls, and whenwelding diaphragm 4, twocard muscle 6 lay respectively atcheck valve 5 both sides with horizontal extruding check valve 5.Wherein, everycard muscle 6 rectangular triangles, its two right-angle sides are separately fixed on the sidewall and diapire of connectedchamber 18, and the spacing of twocard muscle 6 hypotenuses narrows down from top to bottom gradually, and they contact with the side extruding ofcheck valve 5 respectively.During welding, ultrasonic welding machine presses down dividingplate 4,check valve 5 on the dividingplate 4 contacts withcard muscle 6, when dividingplate 4 continues to move downward and during horizontal vibration,card muscle 6 shortens with the distance of dividingplate 4, and twocard muscle 6 laterally push andclamp check valve 5, andcheck valve 5 is no longer vibrated with dividingplate 4, thereby reach the purpose that prevents that checkvalve 5 from coming off, the print cartridge quality is guaranteed.

Figure 7 shows that second kind of embodiment of the utility model, its box portion and first kind of embodiment are basic identical, no longer are repeated in this description herein.Difference mainly is, the check valve fixture that present embodiment adopted is that the China ink that is formed on dividingplate 4 is chewed thecollar flange 43 on 42, and thiscollar flange 43 is coated in the check valve.Owing to be provided with above-mentionedcollar flange 43, check valve frictional resistance is in the axial direction increased, come off thereby when vibration takesplace dividing plate 4, be not easy to chew 42 from China ink.

Above-described only is preferred implementation of the present utility model, under the prerequisite that does not break away from the present utility model design, can also make some distortion and improvement, and such simple structure variation all belongs to protection domain of the present utility model.

Claims (5)

1, print cartridge comprises

Box body with ink storage chamber;

Be used for outwards supplying the ink supply port of ink;

Be used to be communicated with the connected chamber of described ink storage chamber and ink supply port;

Be separated by by a dividing plate that is fixedly welded on box body between described connected chamber and the ink storage chamber;

The China ink that is formed with a connected entrance on the described dividing plate and communicates with this connected entrance is chewed, and this China ink is chewed and is arranged with a check valve;

Described China ink is chewed with check valve and all is positioned at described connected chamber;

It is characterized in that:

Be provided with in the described connected chamber and be used for the check valve fixture of when welding diaphragm, described check valve being fixed.

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

Described check valve fixture is two card muscle that are fixed on the chamber wall of described connected chamber, can laterally push described check valve, and described two card muscle lay respectively at the both sides of check valve.

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

The rectangular triangle of described card muscle, its two right-angle sides are separately fixed on the sidewall and diapire of described connected chamber, and its hypotenuse contacts with the side extruding of described check valve;

The spacing of two card muscle hypotenuses narrows down from top to bottom gradually.

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

Described check valve fixture is to be formed on the collar flange that described China ink is chewed, and this collar flange is coated in the described check valve.

5, according to each described print cartridge of claim 1 to 4, it is characterized in that:

Described check valve is roughly cylindrical elastomer, one end opening, other end sealing; It is near being formed with an otch slit of running through sidewall on sidewall of blind end.

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