CN214646855U - Printer nozzle with exhaust port and ink-jet printer - Google Patents

Abstract

The utility model provides a take print head and inkjet printer of gas vent, including shower nozzle body subassembly and shower nozzle lid subassembly, shower nozzle lid subassembly detachably installs on shower nozzle body subassembly, and shower nozzle body subassembly and shower nozzle lid subassembly surround and form first appearance chamber, and first appearance chamber is used for holding the ink, and the shower nozzle lid subassembly is including going into china ink mouth and gas vent, goes into china ink mouth and gas vent and first appearance chamber intercommunication. Through setting up the gas vent, when the first appearance intracavity accumulated gas was too much, the printer shower nozzle of taking the gas vent can pass through the gas vent exhaust gas, makes the pressure in first appearance chamber resume to normal level.

Description

Printer nozzle with exhaust port and ink-jet printer

Technical Field

The utility model relates to an ink jet printer research field, especially a take printer nozzle and ink jet printer of gas vent.

Background

The inkjet printer head has a chamber for containing ink, and the inside of the chamber is continuously accumulated with the use of the inkjet printer due to the fact that the ink entering the chamber contains gas, external air enters the chamber from a nozzle of the head during printing, bubbles are generated by a heater of the head, and the like. The gas inside the chamber may restrict the flow of ink on the one hand and may also cause a change in pressure inside the chamber, which may lead to a decrease in print quality and may even cause problems such as failure of the nozzles to discharge ink, ink leakage from the nozzles, and the like.

SUMMERY OF THE UTILITY MODEL

The utility model discloses aim at solving one of the technical problem that exists among the prior art at least. Therefore, the utility model provides a take print head and inkjet printer of gas vent, take print head of gas vent can the inside gas of discharge nozzle.

According to the utility model provides a take printer nozzle of gas vent, including shower nozzle body subassembly and shower nozzle lid subassembly, shower nozzle lid subassembly detachably installs on the shower nozzle body subassembly, shower nozzle body subassembly with the shower nozzle lid subassembly surrounds to form first appearance chamber, first appearance chamber is used for holding the ink, shower nozzle lid subassembly is including going into china ink mouth and gas vent, go into china ink mouth with the gas vent with first appearance chamber intercommunication.

According to the utility model provides a take printer nozzle of gas vent has following technological effect at least: through setting up the gas vent, when the first appearance intracavity accumulated gas was too much, take the printer shower nozzle of gas vent exhaust gas from the gas vent, made the pressure in first appearance chamber resume to normal level.

According to some embodiments of the invention, the printer head with the vent comprises at least one liquid level probe for detecting the level of the ink.

According to some embodiments of the invention, the printer head with the exhaust port comprises at least two liquid level probes located at different heights.

According to some embodiments of the invention, the printer head with vent comprises at least two liquid level probes for forming a loop, the loop being connected or disconnected by ink.

According to some embodiments of the present invention, the shower head cover assembly includes a waterproof breathable membrane covering one side of the gas vent close to the first chamber.

According to the utility model discloses a some embodiments, take printer nozzle of gas vent includes that the ink shelters from the structure, the ink shelters from the structure and is located waterproof ventilated membrane is close to one side in first appearance chamber, the ink shelters from the structure and is used for hiding waterproof ventilated membrane.

According to some embodiments of the utility model, the shape that the ink sheltered from the structure is uplift all around, the sunken shape in centre, the ink shelters from the structural cover waterproof ventilated membrane.

According to some embodiments of the utility model, the shape that the ink sheltered from the structure is the dull and stereotyped shape of extension, the ink shelters from the structure and hides waterproof ventilated membrane.

According to some embodiments of the utility model, the shower nozzle lid subassembly shaping has the second to hold the chamber, the second hold the one end in chamber with go into black mouth intercommunication, the second hold the one end in chamber with first appearance chamber intercommunication, the second holds the chamber and is used for the buffer memory ink, the second holds the ink in the intracavity and gets into through the overflow mode first appearance chamber.

According to the utility model provides an ink jet printer, include the utility model provides a take printer nozzle of gas vent.

According to the utility model provides an ink jet printer has following technological effect at least: through using the utility model provides a take printer nozzle of gas vent, ink jet printer can discharge the interior accumulative air of printer nozzle of taking the gas vent to improve ink jet printer's printing quality.

Drawings

The above and/or additional aspects and advantages of the present invention will become apparent and readily appreciated from the following description of the embodiments, taken in conjunction with the accompanying drawings of which:

FIG. 1 is an overall view of a printer head with an exhaust port according to the present invention;

FIG. 2 is an exploded view of a printer head with an exhaust port according to the present invention;

FIG. 3 is an exploded view of a printer head with vent openings according to the present invention in an inverted orientation;

FIG. 4 is a cross-sectional view of a printer head with an exhaust port according to the present invention;

FIG. 5 is a cross-sectional view of a printer head with an exhaust port according to the present invention;

FIG. 6 is a cross-sectional view of a printer head with an exhaust port according to the present invention;

FIG. 7 is an exploded view of a portion of the structure of a showerhead assembly according to the present invention;

FIG. 8 is an overall view of a printer head with an exhaust port according to the present invention;

FIG. 9 is a cross-sectional view of a printer head with an exhaust port according to the present invention;

FIG. 10 is a cross-sectional view of a printer head with an exhaust port according to the present invention;

fig. 11 is an overall view of a reversed showerhead assembly according to the present invention.

Reference numerals:

the liquid level probe comprises a nozzle body assembly 1, a nozzle cover assembly 2, a liquid level probe 9, an ink inlet 11, an exhaust port 12, a waterproof breathable film 13, an ink shielding structure 14, an ink filter screen 16, a liquid level probe sealing cover 20, a liquid level probe sealing ring 40, a liquid level probe spring 41, a liquid level probe circuit board 42, a first accommodating cavity 100 and a second accommodating cavity 200.

Detailed Description

Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are exemplary only for the purpose of explaining the present invention, and should not be construed as limiting the present invention.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated with respect to the orientation description, such as up, down, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.

In the description of the present invention, a plurality of means are one or more, a plurality of means are two or more, and the terms greater than, less than, exceeding, etc. are understood as not including the number, and the terms greater than, less than, within, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present invention, unless there is an explicit limitation, the words such as setting, installation, connection, etc. should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above words in combination with the specific contents of the technical solution.

According to the utility model provides a take printer nozzle of gas vent, including shower nozzle body subassembly 1 and shower nozzle lid subassembly 2, shower nozzle lid subassembly 2 detachably installs on shower nozzle body subassembly 1, and shower nozzle body subassembly 1 and shower nozzle lid subassembly 2 surround and form first appearance chamber 100, and first appearance chamber 100 is used for holding the ink, and shower nozzle lid subassembly 2 is including going into china ink mouth 11 and gas vent 12, goes into china ink mouth 11 and gas vent 12 and first appearance chamber 100 intercommunication.

In normal use, ink enters the head from the ink inlet 11, and some air is taken in from the outside when the ink enters the head. During printing, ink is ejected from a nozzle of a printer head with an exhaust port, and gas carried by the ink may remain in the first cavity 100, and some gas may enter the first cavity 100 from the nozzle. Bubble jet printers also generate bubbles in the head during printing. These gases accumulate in the first chamber 100, so that the pressure in the first chamber 100 changes, which may cause a decrease in printing quality, and may even cause problems such as failure of the nozzle to discharge ink, and ink leakage from the nozzle.

According to the utility model provides a take print head of gas vent, through setting up gas vent 12, when first appearance intracavity 100 accumulated gas was too much, take print head of gas vent can pass through gas vent 12 discharge gas, make the pressure recovery of first appearance chamber 100 to normal level. Specifically, the printer head with an exhaust port may connect the exhaust port 12 to an external air extractor, and extract the air in the first cavity 100 by air extraction.

The printer head with the vent may have different specific shapes and specifications depending on the inkjet printer using the printer head with the vent. For example, as shown in fig. 2, the head body assembly 1 may be substantially in a square box shape, an opening is formed above the head body assembly 1, a flange extends outward from the upper side of the head body assembly 1, when the printer head with the vent is in an assembled state, the head cover assembly 2 covers the opening of the head body assembly 1, the head cover assembly 2 contacts the flange, and the head cover assembly 2 closes the opening of the head body assembly 1, thereby forming the first receiving chamber 100.

According to some embodiments of the present invention, the printer head with the vent comprises at least one liquid level probe 9, the liquid level probe 9 being used for detecting the liquid level of the ink. The timing of the air suction from the exhaust port 12 can be controlled by the liquid level probe 9. In some embodiments, the vented printer head includes at least two level probes 9 at different heights. The level probes 9 are used to maintain the ink level between the level probes 9 at different heights. In some embodiments, the vented printer head includes at least two level probes 9 for forming a circuit that is connected or disconnected by ink.

For example, in some embodiments, as shown in FIG. 9, the vented printer head includes 3 level probes 9 at different heights. The liquid level probe 9 is arranged on the side surface of the printer nozzle with the exhaust port, the liquid level probe 9 at the lowest part is set as a zero line, the two liquid level probes 9 at the upper part are set as a live line, the liquid level probe 9 at the uppermost part and the liquid level probe 9 at the lowest part form a first loop respectively, and the liquid level probe 9 at the middle part and the liquid level probe 9 at the lowest part form a second loop. When the gas is accumulated in the first chamber and the liquid level of the ink drops below the middle liquid level probe 9, the second loop is disconnected, the printer nozzle with the exhaust port sucks air from the exhaust port 12, and when the liquid level contacts the uppermost liquid level probe 9, the first loop is communicated and the air suction is stopped, so that the liquid level of the ink is kept between the uppermost liquid level probe 9 and the middle liquid level probe 9. In some embodiments, as shown in fig. 1 and 3, the printer head with the vent comprises two liquid level probes 9, the two liquid level probes 9 are positioned at the same height, a loop is formed between the two liquid level probes 9, and as shown in fig. 4, the liquid level probes 9 extend into the first cavity 100. In actual use, gas is gradually accumulated in the first accommodating cavity 100, the liquid level of the ink in the first accommodating cavity 100 slowly drops, when the liquid level is lowered to the position below the liquid level probe 9, the loop is disconnected, and the printer pumps out the redundant gas in the first accommodating cavity 100 at the exhaust port 12 through the air pumping device, so that the liquid level probe 9 is submerged by the ink again, the pressure of the first accommodating cavity 100 is recovered to be normal, and the printer can continue printing.

Of course, the liquid level probe 9 does not necessarily need to detect the liquid level through a loop, and the liquid level probe may also be a non-contact liquid level probe, for example, in some embodiments, the liquid level probe 9 is an electro-optical liquid level probe, the liquid level probe 9 is disposed on the head cover assembly 2, the probe of the liquid level probe 9 faces downward to the liquid level, and the liquid level probe 9 detects the position of the liquid level by emitting light and receiving the reflected light of the liquid level.

According to some embodiments of the present invention, the cap assembly 2 includes a waterproof membrane 13, and the waterproof membrane 13 covers the side of the gas outlet 12 near the first chamber 100. As shown in fig. 3, 9 and 11, the waterproof and breathable film 13 separates the first cavity 100 from the external environment, so that the ink leakage from the exhaust port 12 can be avoided when the printer head with the exhaust port is used or when the printer head with the exhaust port is evacuated, and the normal discharge of the gas from the exhaust port 12 cannot be influenced. The waterproof breathable film 13 can be a microporous polytetrafluoroethylene film and the like.

According to some embodiments of the utility model, the printer nozzle of taking the gas vent includes that the ink shelters from structure 14, and the ink shelters from structure 14 and is located waterproof ventilated membrane 13 and is close to one side that first appearance chamber 100, and ink shelters from structure 14 and is used for hiding waterproof ventilated membrane 13. The life of waterproof ventilated membrane 13 has the negative correlation with the time of contact ink, shelters from structure 14 through setting up the ink, can reduce the probability of ink and waterproof ventilated membrane 13 contact to the life-span of extension waterproof ventilated membrane 13. The ink shielding structure 14 may be provided on the head cap assembly 2 or on the head body assembly 1.

In some embodiments, the ink shielding structure 14 is shaped as a protrusion and a depression, and the ink shielding structure 14 covers the waterproof and breathable film 13. For example, as shown in fig. 4 and 7, the ink shielding structure 14 is in a square box shape with an open top, the ink shielding structure 14 is disposed on the nozzle cover assembly 2, a notch is formed on a side wall of the ink shielding structure 14, and a bottom surface of the ink shielding structure 14 is close to but not in contact with the waterproof breathable film 13, so as to form a narrow fluid channel, on one hand, the ink shielding structure 14 can prevent ink below from splashing on the waterproof breathable film 13, on the other hand, gas and ink need to enter the exhaust port 12 from the notch along the fluid channel, the entering route is tortuous and narrow, and the ink is difficult to pass through than the gas, so as to reduce the probability of contact between the ink and the waterproof breathable film 13. The notch can also be designed into a narrow gap shape, so that the difficulty of ink passing through the notch is improved, and the contact probability of the ink and the waterproof breathable film 13 is further reduced. In some embodiments, the ink blocking structure 14 is shaped as an extended flat plate, and the ink blocking structure 14 blocks the waterproof breathable film 13. For example, as shown in fig. 9, the side of the head cap assembly 2 extends towards the inner side wall of the head body assembly 1 to form a flat-plate-shaped ink shielding structure 14, a gap is left between the ink shielding structure 14 and the inner side wall, a notch is formed in the ink shielding structure 14, and ink and air can pass through the gap or the notch. On the one hand, the ink shielding structure 14 can prevent ink below from splashing to the waterproof breathable film 13, and on the other hand, because the width of the gap and the notch is narrow, ink is not easy to pass through the gap and the notch, thereby reducing the contact probability of the ink and the waterproof breathable film 13.

According to some embodiments of the utility model, shower nozzle lid subassembly 2 shaping has the second to hold chamber 200, and the second holds the one end of chamber 200 and goes into china ink mouth 11 intercommunication, and the second holds the one end and the first chamber 100 intercommunication that hold chamber 200, and the second holds chamber 200 and is used for the buffer memory ink, and the second holds the ink in the chamber 200 and gets into first chamber 100 through the overflow. Generally, the printer head with the vent may be provided with an ink filter 16, the ink filter 16 is used for filtering the ink entering the first cavity 100 from the ink inlet 11, the liquid level change of the first cavity 100 may affect the penetration resistance of the ink filter 16, and the gas staying on the ink filter 16 may block the ink from passing through the ink filter 16, possibly interfering with the normal ink feeding of the printer head with the vent. Through setting up second chamber 200, can guarantee that ink filter screen 16 submerges all the time in the china ink, reduce gaseous printer shower nozzle that takes the gas vent and advance black interference, even because the ink in the first chamber 100 of holding of some reasons is consumed, second chamber 200 still has the ink, can not influence the normal ink that advances of printer shower nozzle that takes the gas vent. For example, fig. 5 and 6 show schematic flow paths of ink in an embodiment of a vented printer head, where an ink filter 16 is disposed in the second cavity 200, the ink first enters from the ink inlet 11 and is buffered in the second cavity 200, and when the second cavity 200 is full of ink, the ink overflows from the second cavity 200 into the first cavity 100.

According to the utility model provides an ink jet printer, include the utility model provides a take printer nozzle of gas vent.

According to the utility model provides an ink jet printer, through using the utility model provides a take printer head of gas vent, ink jet printer can discharge the interior accumulative air of printer head of taking the gas vent to improve ink jet printer's printing quality. The ink jet printer may further comprise a suction device for sucking air, the suction device being in communication with the vent 12, and when suction is required, the suction device is activated to generate a negative pressure, thereby drawing air from the vent 12 in the first chamber 100.

The printer head with an exhaust port according to the present invention will be described in detail in two specific embodiments with reference to fig. 1, fig. 2, fig. 3, fig. 4, fig. 5, fig. 6, fig. 7, fig. 8, fig. 9, and fig. 10. It is to be understood that the following description is illustrative only and is not intended as a specific limitation on the invention.

The first embodiment:

the first embodiment is shown in fig. 1, 2, 3, 4, 5, 6, and 7, and includes a head body assembly 1 and a head cover assembly 2.

As shown in fig. 1, 2, and 3, the head body assembly 1 is in a square box shape, an opening is formed above the head body assembly 1, a flange extends outwards from the upper side of the head body assembly 1, the head body assembly 1 includes a liquid level probe cover 20, two liquid level probes 9 located at the same height are arranged on the liquid level probe cover 20, and the liquid level probe cover 20 is detachably inserted into the side wall of the head body assembly 1. As shown in fig. 4, the liquid level probe cover 20 and the spray head body assembly 1 are formed with a groove and a protrusion structure, which are configured and arranged for positioning and sealing the liquid level probe 9.

The nozzle cover component 2 covers the opening of the nozzle body component 1, the nozzle cover component 2 is in contact with the flange, the nozzle cover component 2 seals the opening of the nozzle body component 1, and the nozzle cover component 2 and the nozzle body component 1 surround to form a first accommodating cavity 100. As shown in fig. 4, 5 and 6, the nozzle cap assembly 2 includes an exhaust port 12, the exhaust port 12 is communicated with the first chamber 100, one side of the exhaust port 12 close to the first chamber 100 is detachably covered with a waterproof breathable film 13, the nozzle cap assembly 2 is further formed with an ink shielding structure 14, as shown in fig. 7, the ink shielding structure 14 is in a shape of being raised all around, the middle of the ink shielding structure is in a recessed shape, a notch is formed in the raised side wall of the ink shielding structure 14, and the ink shielding structure 14 covers the exhaust port 12. The head cap assembly 2 includes an ink inlet 11, the head cap assembly 2 is formed with a second cavity 200, the ink inlet 11 is communicated with the second cavity 200, and the second cavity 200 is communicated with the first cavity 100. Specifically, as shown in fig. 5 and 6, the second cavity 200 communicates with the first cavity 100 through an overflow structure, and an ink screen 16 for filtering ink is disposed in the second cavity 200.

According to the utility model discloses take printer nozzle of gas vent through adopting above design, can realize such some functions at least: through setting up gas vent 12, can take out the gas in first appearance chamber 100, make the pressure in first appearance chamber 100 restore to normal level, reduce the printer shower nozzle that takes the gas vent because the internal pressure unusual the possibility that breaks down.

Through setting up waterproof ventilated membrane 13, can block that the ink gets into gas vent 12, reduce the interference of ink to the process of bleeding, reduce the emergence of trouble. Through setting up ink shielding structure 14, can hinder ink and waterproof ventilated membrane 13 contact to improve waterproof ventilated membrane 13's life. When the waterproof breathable membrane 13 is damaged or reaches the service life, the nozzle cover assembly 2 can be detached and replaced with a new waterproof breathable membrane 13, so that the service life of the printer nozzle with the air outlet is prolonged.

Through setting up liquid level probe 9, two liquid level probes 9 form the return circuit, can send a signal when the ink liquid level is less than liquid level probe 9 to remind in time to bleed, avoid appearing the liquid level situation that the liquid level is low excessively.

Through setting up second chamber 200, the ink at first gets into and the buffer memory is held in second chamber 200 from going into china ink mouth 11, after second chamber 200 is filled up with the ink, the ink overflows from second chamber 200 and gets into first chamber 100, can guarantee that ink filter screen 16 submerges in the ink all the time, reduce the inside gas volume change in first chamber 100 and take the printer shower nozzle of gas vent to advance black interference, even if because some reasons the ink in first chamber 100 is consumed, second chamber 200 still has the ink, can not influence the normal ink of advancing of the printer shower nozzle of taking the gas vent.

Second embodiment:

the second embodiment is shown in fig. 8, 9 and 10, and the differences between the second embodiment and the first embodiment at least include:

the second embodiment includes two ink inlets 11 and two air outlets 12, and the second embodiment further includes two second cavities 200 and one first cavity 100, and the two ink inlets 11 are communicated with the different second cavities 200. The side of shower nozzle lid subassembly 2 extends the ink that the shaping goes out dull and stereotyped shape towards the inside wall of shower nozzle body subassembly 1 and shelters from structure 14, and the ink shelters from and leaves the gap between structure 14 and the inside wall, and the ink shelters from and has seted up the notch on the structure 14, because the width of gap and notch is narrower, and the ink is difficult to pass through from gap and notch to reduce the probability of ink and waterproof ventilated membrane 13 contact.

The side of shower nozzle body subassembly 1 is provided with 3 liquid level probes 9 that are located co-altitude not, specifically, the side shaping of shower nozzle body subassembly 1 has the mounting hole that has the step face, the outside of first appearance chamber 100 of mounting hole intercommunication and the printer shower nozzle of taking the exhaust port, shower nozzle body subassembly 1 still includes liquid level probe sealing washer 40, liquid level probe spring 41, liquid level probe circuit board 42, probe sealing washer 40 overlaps in the mounting hole, liquid level probe 9 inserts probe sealing washer 40, liquid level probe circuit board 42 covers on the mounting hole and passes through the screw fastening, the one end and the contact of liquid level probe circuit board 42 of liquid level probe spring 41, the other end and the contact of liquid level probe 9 of liquid level probe spring 41, thereby compress tightly liquid level probe 9 in the mounting hole. When the liquid level of the ink drops below the intermediate liquid level probe 9, the printer head with the exhaust port draws air from the exhaust port 12, and when the liquid level contacts the uppermost liquid level probe 9, the air drawing is stopped, so that the liquid level of the ink is held between the uppermost liquid level probe 9 and the intermediate liquid level probe 9.

In the description herein, references to the description of the term "one embodiment," "some embodiments," "an illustrative embodiment," "an example," "a specific example," or "some examples" or the like mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

While embodiments of the present invention have been shown and described, it will be understood by those of ordinary skill in the art that: various changes, modifications, substitutions and alterations can be made to the embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the claims and their equivalents.

Claims (10)

1. A printer nozzle with an exhaust port, comprising:

a nozzle body assembly (1);

shower nozzle lid subassembly (2), shower nozzle lid subassembly (2) detachably install on shower nozzle body subassembly (1), shower nozzle body subassembly (1) with shower nozzle lid subassembly (2) surround and form first appearance chamber (100), first appearance chamber (100) are used for holding ink, shower nozzle lid subassembly (2) are including going into china ink mouth (11) and gas vent (12), go into china ink mouth (11) with gas vent (12) with first appearance chamber (100) intercommunication.

2. The vented printer head of claim 1, wherein: the printer nozzle with the exhaust port comprises at least one liquid level probe (9), and the liquid level probe (9) is used for detecting the liquid level of ink.

3. The vented printer head of claim 2, wherein: the printer nozzle with the exhaust port comprises at least two liquid level probes (9) which are positioned at different heights.

4. The vented printer head of claim 2 or 3, wherein: the printer nozzle with the vent comprises at least two liquid level probes (9) for forming a loop, and the loop is communicated or disconnected through ink.

5. The vented printer head of claim 1, wherein: the spray head cover assembly (2) comprises a waterproof breathable film (13), and the side, close to the first containing cavity (100), of the exhaust port (12) is covered by the waterproof breathable film (13).

6. The vented printer head of claim 5, wherein: the printer nozzle with the exhaust port comprises an ink shielding structure (14), wherein the ink shielding structure (14) is located on one side, close to the first accommodating cavity (100), of the waterproof breathable film (13), and the ink shielding structure (14) is used for covering the waterproof breathable film (13).

7. The vented printer head of claim 6, wherein: the ink shielding structure (14) is in a shape of being protruded at the periphery and sunken in the middle, and the waterproof breathable film (13) is covered by the ink shielding structure (14).

8. The vented printer head of claim 6, wherein: the ink shielding structure (14) is in an extended flat plate shape, and the waterproof breathable film (13) is shielded by the ink shielding structure (14).

9. The vented printer head of claim 1, wherein: the nozzle cover assembly (2) is formed with a second containing cavity (200), one end of the second containing cavity (200) is communicated with the ink inlet (11), one end of the second containing cavity (200) is communicated with the first containing cavity (100), the second containing cavity (200) is used for caching ink, and the ink in the second containing cavity (200) enters the first containing cavity (100) in an overflow mode.

10. An ink jet printer comprising a vented printer head according to any one of claims 1 to 9.

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