A continuous ink-jet cartridge for thermal foaming

Abstract

This invention relates to the field of inkjet printing technology, specifically to a one-inch industrial ink cartridge for continuous inkjet printing using thermal foaming. The cartridge includes: an inner frame; a protective component, within which the inner frame is housed; an auxiliary block mounted on the front wall of the inner frame, the upper end of which is recessed downwards to form a control cavity; a first composite film, enlarged in area through a stretching process and then mounted on the upper end of the inner frame; a second composite film, enlarged in area through a stretching process and then mounted on the lower end of the inner frame; a control component disposed within the control cavity; an ink replenishment component mounted on the auxiliary block, communicating with the control cavity; and a filter component mounted on the auxiliary block. This design enables adaptive replenishment of ink in the replenishment tank, ensuring a constant negative pressure within the control cavity and other spaces. Its use in conjunction with the ink storage cavity, control cavity, control cavity orifice, replenishment tank, second printing tank, and grooves greatly increases ink capacity and reduces production costs.

Description

Technical Field

[0001] This invention relates to a one-inch industrial ink cartridge for continuous inkjet printing using thermal foaming, belonging to the field of inkjet printing technology. Background Technology

[0002] Food production date coding is a crucial step that is widely valued in countries around the world. It directly relates to consumers' judgment of product freshness and shelf life, as well as their need for quality traceability, and is a core support for protecting consumer rights. With the advancement of globalization in trade, the market demand for packaging labeling is increasing daily. Coding technology has gradually expanded from the food industry to multiple fields such as pharmaceuticals, packaging, and customized production. Traditional printing technology can only print fixed information, making it difficult to meet the dynamic information printing needs of modern society, such as "one item, one code." Furthermore, variable code printing is inefficient and has been gradually replaced by new equipment such as thermal inkjet printers. Among these, thermal inkjet printers, due to their advantages of low price and maintenance-free operation, occupy a mainstream position in the market, and thermal inkjet cartridges are their core components.

[0003] The printhead height of a one-inch thermal ink cartridge is 25.4 mm. Its printing principle is based on precise thermal control technology: the ink is heated by an array of resistors on a COT circuit board, rapidly heating a tiny amount of ink (≤5 picoliters) to over 300°C within a designated nozzle area. This process instantly generates a large number of tiny bubbles, which converge and rapidly expand within 10 microseconds. The resulting pressure forces the ink droplets through the nozzle, completing the printing process. Subsequently, the bubbles dissipate within a few microseconds and flow back to the resistor area, while the ink at the nozzle retracts and resets under surface tension, preparing for the next printing.

[0004] Despite the mature technology, the current market for one-inch thermal ink cartridges still has shortcomings: Firstly, one-inch thermal ink cartridges adopt a single storage space design, relying on aluminum sheets and their elasticity to maintain stable internal negative pressure. This structure limits the amount of ink filled. Overfilling can cause the aluminum sheet to lose its elasticity, disrupting the negative pressure balance and causing ink leakage from the nozzles, directly resulting in a low effective capacity of the ink cartridge. Secondly, when a one-inch thermal ink cartridge is nearing the end of its lifespan and needs replacement, the internal negative pressure system is prone to premature failure, leaving 15%-20% of ink unusable in a single storage chamber, resulting in low ink utilization and significantly increasing user costs. Thirdly, the printhead height of a one-inch thermal ink cartridge is 25.4mm, more than double the 12.7mm of a half-inch thermal ink cartridge. Due to the printing height issue, when all nozzles are simultaneously printing ink, the ink is concentrated in the aluminum sheet control area, and the driving force provided by the aluminum sheet's elasticity is insufficient to achieve simultaneous ink supply to all nozzles. This can easily lead to problems such as ink not coming out at the top of the printhead but coming out normally at the bottom, ink supply interruption at high printing speeds, and distorted printing results. Summary of the Invention

[0005] To address the problems in the prior art, this invention provides a one-inch industrial ink cartridge for continuous inkjet printing using thermal foaming.

[0006] The technical solution adopted by this invention to solve its technical problem is: A one-inch industrial ink cartridge for continuous inkjet printing in thermal foaming, comprising: Inner frame; The protective component has an inner frame inside it; An auxiliary block is installed on the front wall inside the inner frame. The upper and lower end faces of the auxiliary block coincide with the upper and lower end faces of the inner frame, and the auxiliary block and the inner frame are integrated. The upper end face of the auxiliary block is recessed downward to form a control cavity. The first composite membrane is enlarged in area through a stretching process and then set on the upper end of the inner frame. The lower end of the first composite membrane is connected to the upper end of the auxiliary block. The second composite membrane is enlarged in area through a stretching process and then installed at the lower end of the inner frame. The upper end of the second composite membrane is connected to the lower end of the auxiliary block. The control components are located inside the control cavity; A refilling component is mounted on an auxiliary block, and the refilling component is arranged in communication with the control cavity; The filter element is installed on the auxiliary block; The upper half of the COT circuit board is located at the front end of the protective component; Furthermore, the upper half of the COT circuit board has a wafer and multiple thermistors at its front end, and the multiple thermistors are all located on the outside of the wafer. Furthermore, the wafer contains a nozzle structure and multiple heating resistors; The lower half of the COT circuit board is installed on the left end of the protective component; Furthermore, the nozzle structure is composed of multiple nozzles, and the cross-section of the nozzles is a cone shape with a narrow front and a wide rear. Multiple heating resistors are respectively disposed in multiple nozzles. Multiple thermistors are electrically connected to the heating resistors in the wafer. The heating resistors and thermistors are all electrically connected to the lower half of the COT circuit board.

[0007] Furthermore, the filter element includes a filter screen, the upper end of the auxiliary block is recessed downward to form a placement groove, the bottom end of the placement groove is recessed downward to form a recess, the upper end of the auxiliary block forms a second printing groove downward, and the second printing groove is located in front of the control cavity. The front end of the second printing groove is connected to the rear end of the placement groove. The bottom end of the second printing groove is recessed downward to form a second connecting hole. The bottom end of the placement groove is installed with a filter screen. The front wall of the recess is recessed forward to form a first printing groove. A buffer column is provided inside the first printing groove. The front end of the first printing groove passes through the protective member and is connected to the nozzle structure.

[0008] Furthermore, the ink replenishment component includes a first flow channel and a second flow channel. The upper end of the auxiliary block is recessed downward to form the first flow channel and the second flow channel, and the cross-section of the second flow channel is L-shaped. The first flow channel is connected to the right end of the control cavity, and the second flow channel is connected to the left end of the control cavity. The auxiliary block has a third connecting hole formed by a recessed rear end facing forward, and the front end of the third connecting hole is connected to the rear end of the second flow channel. The auxiliary block has a first connecting hole formed by a recessed right end facing left, and the left end of the first connecting hole is connected to the right end of the first flow channel.

[0009] Furthermore, the control component includes a first end cap, which is installed inside the control cavity, and the upper surface of the first end cap coincides with the upper surface of the auxiliary block. A first elastic element is provided at the lower end of the first end cap, and a T-shaped movable valve is installed at the lower end of the first elastic element. A sealing gasket is fitted on the outer end of the vertical cylindrical part of the T-shaped movable valve, and the sealing gasket is attached to the bottom of the inside of the control cavity. The bottom surface of the inside of the control cavity is recessed downward to form a control cavity hole, and the control cavity hole is located at the lower end of the sealing gasket. The control cavity hole has a cross-shaped structure and is located behind the second connecting hole. The lower end of the auxiliary block is recessed upward to form a supplementary groove, and the upper end of the supplementary groove is connected to the lower end of the control cavity hole and the lower end of the second connecting hole respectively. The second end cover is movably installed in the supplementary groove. The upper end of the second end cover is provided with a second elastic element. The upper end of the second elastic element is connected to the top of the inside of the supplementary groove. The lower end of the vertical cylindrical part of the T-shaped movable valve passes through the control cavity hole and is connected to the second end cover. The vertical cylindrical part of the T-shaped movable valve is located inside the second elastic element.

[0010] Furthermore, the protective component includes an outer frame, an inner frame installed inside the outer frame, a first protective cover at the upper end of the outer frame, a second protective cover at the lower end of the outer frame, an ink injection hole formed by a rearward recess at the front end of the outer frame, and the ink injection hole extending to the inner wall of the inner frame, the ink injection hole being located on the right side of the auxiliary block, the upper half of the COT circuit board being installed at the front end of the outer frame, the lower half of the COT circuit board being installed at the left end of the outer frame, and the front end of the first inkjet printing groove passing through the outer frame and communicating with the wafer.

[0011] Furthermore, multiple hollow rods are equidistantly installed at the lower end of the filter screen, and the hollow rods extend to the upper end of the filter screen. Fixed rods are provided at both the front and rear ends of the hollow rods, and the two fixed rods are respectively connected to the front and rear walls of the groove at their outward ends. The fixed rods are located on the lower side of the filter screen. A round rod is slidably connected to the upper end of the hollow rod, and the lower end of the round rod passes through the hollow rod. A float is installed at the lower end of the round rod and is attached to the lower end of the hollow rod. Multiple fan blades are equidistantly arranged at the upper end of the round rod and are located below the first composite membrane. The inner wall of the hollow rod is recessed outward to form a spiral groove. A rolling member is installed at the outer end of the round rod and the rolling part of the rolling member is in rolling connection with the spiral groove.

[0012] The beneficial effects of this invention are: The first and second composite films are installed at the upper and lower ends of the inner frame, respectively. This forms an ink storage cavity within the inner frame, at the lower end of the first composite film, at the upper end of the second composite film, and at the outer end of the auxiliary block. Ink is then filled into the first flow channel, the second flow channel, the control cavity, the control cavity orifice, and the replenishment groove through the first and third connecting holes. When the ink pressure in the control cavity is greater than the ink pressure in the replenishment groove, the sealing gasket blocks the control cavity orifice. When the ink pressure in the control cavity is less than the ink pressure in the replenishment groove, the second composite film located at the lower end of the replenishment groove, due to the negative pressure inside the replenishment groove, causes the second end cap, the T-shaped movable valve, and the sealing gasket to move upwards. At this point, the ink in the control cavity enters the replenishment groove through the control cavity orifice, and re-fills the replenishment groove, the second printing groove, and the groove. The ink is refilled, enabling adaptive replenishment of the ink in the replenishment tank. This ensures that the space inside the control cavity and other spaces is always under constant negative pressure, effectively reducing the probability of ink leakage. It also ensures that the replenishment tank, the second printing tank, and the recessed space are kept at a constant ink capacity, thus effectively ensuring a sufficient and smooth ink supply and improving printing speed and efficiency. At the same time, under constant negative pressure, its use in conjunction with the ink storage cavity, control cavity, control cavity orifice, replenishment tank, second printing tank, and recessed space greatly increases the ink usage capacity and reduces production costs. In addition, in conjunction with the first flow channel, first connecting hole, second flow channel, and third connecting hole, it effectively reduces the amount of ink residue in the ink storage cavity and other spaces. Furthermore, under the action of the buffer column, it makes it easier to supply ink to the wafer. Attached Figure Description

[0013] Other features, objects, and advantages of the invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings: Figure 1 This is a structural schematic diagram of a one-inch industrial ink cartridge for continuous inkjet printing for thermal foaming according to the present invention. Figure 2 This is a perspective view of a one-inch industrial ink cartridge for continuous inkjet printing for thermal foaming according to the present invention. Figure 3 An exploded view of a one-inch industrial ink cartridge for continuous printing with thermal foaming according to the present invention. Figure 4 This is a cross-sectional view of a one-inch industrial ink cartridge for continuous printing in thermal foaming according to the present invention. Figure 5 for Figure 4 Enlarged view of section A in the middle; Figure 6 This is a frontal perspective view of the outer frame of a one-inch industrial ink cartridge for continuous printing with thermal foaming according to the present invention. Figure 7 This is a rear perspective view of the outer frame of a one-inch industrial ink cartridge for continuous printing with thermal foaming according to the present invention. Figure 8 This is a perspective view of a T-shaped movable valve in a one-inch industrial ink cartridge for thermal foaming according to the present invention. Figure 9 This is a perspective view of the first end cap of a one-inch industrial ink cartridge for continuous printing with thermal foaming according to the present invention. Figure 10 This is a perspective view of a sealing gasket in a one-inch industrial ink cartridge for thermal foaming according to the present invention. Figure 11 This is a perspective view of the second end cap of a one-inch industrial ink cartridge for continuous printing in thermal foaming according to the present invention. Figure 12 This is a cross-sectional view of the first printing groove in a one-inch industrial ink cartridge for continuous printing of thermal foaming according to the present invention. Figure 13 This is a schematic diagram of another embodiment of the present invention: a one-inch industrial ink cartridge for continuous printing with thermal foaming. Figure 14 for Figure 13 Enlarged view of section B in the middle; Figure 15 This is a three-dimensional view of the float ball in a one-inch industrial ink cartridge for thermal foaming according to the present invention.

[0014] In the picture: 1. Outer frame; 11. Ink filling hole; 12. Lower half of COT circuit board; 2. First protective cover; 3. Upper half of the COT circuit board; 31. Wafer; 4. First composite membrane; 5. Control chamber; 51. T-shaped movable valve; 52. First elastic element; 53. First end cap; 54. Sealing gasket; 55. Second end cap; 56. Second elastic element; 57. Control chamber hole. 6. Auxiliary block; 61. Supplementing groove; 62. Groove; 63. First printing groove; 631. Buffer column; 64. Filter screen; 641. Float ball; 642. Fan blade; 643. Round rod; 644. Hollow rod; 645. Fixing rod; 646. Spiral groove; 647. Universal ball bearing; 65. Placement groove; 66. First flow channel; 661. First connecting hole; 67. Second printing groove; 671. Second connecting hole; 68. Second flow channel; 681. Third connecting hole; 7. Second composite membrane; 8. Second protective cover; 9. Inner frame. Detailed Implementation

[0015] To make the technical means, creative features, objectives and effects of this invention easier to understand, the invention will be further described below in conjunction with specific embodiments.

[0016] Example 1: As Figures 1-12 As shown, a one-inch industrial ink cartridge for continuous inkjet printing for thermal foaming is provided, including: an inner frame 9, which is installed inside an outer frame 1, and provides a mounting carrier for an auxiliary block 6 through the inner frame 9; a first protective cover 2 is set on the upper end of the outer frame 1, and a second protective cover 8 is installed on the lower end of the outer frame 1. The first protective cover 2 and the second protective cover 8 work together to achieve a protective function; an ink injection hole 11 is formed by a rearward recess at the front end of the outer frame 1, extending to the inner wall of the inner frame 9, and the ink injection hole 11 is located on the right side of the auxiliary block 6; ink is injected into the inner frame 9 through the ink injection hole 11. An auxiliary block 6, which is integral with the inner frame 9, is installed on the inner front wall of the inner frame 9. The upper and lower end faces of the auxiliary block 6 coincide with the upper and lower end faces of the inner frame 9. The auxiliary block 6 provides a processing carrier for components such as the control cavity 5. The first composite film 4 is placed on the upper end of the inner frame 9, and the lower end of the first composite film 4 is connected to the upper end of the auxiliary block 6. The second composite film 7 is installed on the lower end of the inner frame 9, and the upper end of the second composite film 7 is connected to the lower end of the auxiliary block 6. The first composite film 4 and the second composite film 7 are used together after the area is increased by the stretching process. After shrinking, they coincide with the contour of the inner frame 9, which effectively reduces the amount of ink residue. A control cavity 5 is formed by recessing the upper surface of the auxiliary block 6 downwards. The control cavity 5 provides installation space for components such as the first end cover 53. The first end cover 53 is installed in the control cavity 5, and the upper surface of the first end cover 53 coincides with the upper surface of the auxiliary block 6. The first end cover 53 provides an installation carrier for the first elastic element 52, and the first elastic element 52 is set on the lower end of the first end cover 53. The T-shaped movable valve 51 is returned to its original position by the first elastic element 52. The first elastic element 52 can be a spring. A cross-shaped control cavity hole 57 is formed by a downward recess at the bottom of the control cavity 5. The control cavity hole 57 is located at the lower end of the sealing gasket 54 and behind the second connecting hole 671. The control cavity 5 and the replenishment groove 61 are connected through the control cavity hole 57. A replenishment groove 61 is formed by an upward recess at the lower end of the auxiliary block 6. The upper end of the replenishment groove 61 is connected to the lower end of the control cavity hole 57 and the lower end of the second connecting hole 671. Ink is supplied into the second connecting hole 671 through the replenishment groove 61. The second end cap 55 is movably installed inside the replenishment groove 61. The second end cap 55 provides an installation carrier for components such as the second elastic element 56. The second elastic element 56 is set on the upper end of the second end cap 55, and the upper end of the second elastic element 56 is connected to the top of the inside of the replenishment groove 61. The second end cap 55 is returned to its original position through the second elastic element 56. The second elastic element 56 can be a spring. The T-shaped movable valve 51 is installed at the lower end of the first elastic element 52. The lower end of the vertical cylindrical part of the T-shaped movable valve 51 passes through the control cavity hole 57 and is connected to the second end cap 55. The vertical cylindrical part of the T-shaped movable valve 51 is located inside the second elastic element 56. The T-shaped movable valve 51 provides an installation carrier for components such as the sealing gasket 54. The sealing gasket 54 is then fitted onto the outer end of the vertical cylindrical part of the T-shaped movable valve 51. The sealing gasket 54 is attached to the bottom of the inside of the control cavity 5. The sealing gasket 54 seals the control cavity hole 57. A first flow channel 66 and a second flow channel 68 are formed by a downward recess on the upper surface of the auxiliary block 6. The cross-section of the second flow channel 68 is L-shaped. The first flow channel 66 is connected to the right end of the control cavity 5, and the second flow channel 68 is connected to the left end of the control cavity 5. The first flow channel 66 and the second flow channel 68 work together to deliver ink into the control cavity 5. A third connecting hole 681 is formed by a forward recess on the rear end of the auxiliary block 6. The front end of the third connecting hole 681 is connected to the rear end of the second flow channel 68. Ink is delivered into the second flow channel 68 through the third connecting hole 681. A first connecting hole 661 is formed by a left recess on the right end of the auxiliary block 6. The left end of the first connecting hole 661 is connected to the right end of the first flow channel 66. Ink is delivered into the first flow channel 66 through the first connecting hole 661. A placement groove 65 is formed by a downward-facing recess on the upper end of the auxiliary block 6, providing installation space for the filter 64. A groove 62 is formed by a downward-facing recess inside the placement groove 65, and a first printing groove 63 is formed by a forward-facing recess on the front wall inside the groove 62. The groove 62 and the first printing groove 63 work together to deliver ink outward. A buffer column 631 is provided inside the first printing groove 63 to facilitate ink supply to the wafer 31. A second printing groove 67 is formed on the upper end of the auxiliary block 6, located in front of the control cavity 5, and the front end of the second printing groove 67 is connected to the rear end of the placement groove 65. Ink is delivered into the placement groove 65 through the second printing groove 67. A second connecting hole 671 is formed by a downward-facing recess inside the second printing groove 67, connecting the second printing groove 67 to the replenishment groove 61. The filter 64 is installed on the bottom inside the placement groove 65 to filter the ink.

[0017] During assembly, the filter screen 64 is first installed onto the placement groove 65, and then the T-shaped movable valve 51 and the first elastic element 52 and other components are installed onto the channel structure formed by the control cavity 5, the control cavity hole 57 and the supplementary groove 61. Since the first composite membrane 4 and the second composite membrane 7 have high toughness and strength, the membrane area of ​​the first composite membrane 4 and the second composite membrane 7 can be increased by stretching (the area is increased by 2 / 5 compared to the area before stretching). Then, the first composite membrane 4 and the second composite membrane 7 are installed onto the upper and lower ends of the inner frame 9 respectively by hot pressing and sealing process. At this time, the inner frame 9, the lower end of the first composite membrane 4, the upper end of the second composite membrane 7 and the outer end of the auxiliary block 6 form an ink storage cavity. By using stretching and hot-pressing sealing technology, the conformity between the first composite film 4 and the second composite film 7 and the inner frame 9 is improved. Then, the first protective cover 2 and the second protective cover 8 are respectively installed on the upper and lower ends of the outer frame 1, thereby completing the assembly of the ink cartridge. All processes related to this assembly are existing technologies, which can effectively reduce the manufacturing cost of the ink cartridge.

[0018] Before use, fill the ink storage chamber with an appropriate amount of ink through the ink filling hole 11. The ink will then fill the first connecting hole 661, the third connecting hole 681, the first flow channel 66, the second flow channel 68, the control chamber 5, the control chamber hole 57, the replenishment groove 61, the second connecting hole 671, the second printing groove 67, the placement groove 65, the groove 62, and the first printing groove 63 in sequence. Then, insert the steel ball or other sealing device into the ink filling hole 11 to prevent ink leakage. Finally, install the structure assembled from the outer frame 1, the first protective cover 2, and the second protective cover 8 into the thermal inkjet printer.

[0019] In use, the ink in the ink storage chamber enters the first flow channel 66 and the second flow channel 68 through the first connection hole 661 and the third connection hole 681, respectively. Then, the ink in the first flow channel 66 and the second flow channel 68 both enter the control chamber 5, realizing bidirectional ink replenishment in the control chamber 5. Then, the ink in the control chamber 5 enters the replenishment tank 61 through the control chamber hole 57. The ink in the replenishment tank 61 enters the second printing tank 67 through the second connection hole 671. Then, the ink in the second printing tank 67 enters the placement tank 65 and passes through the filter screen 64 and enters the groove 62. At this time, the filter screen 64 filters the ink. Then, the ink in the groove 62 enters the first printing tank 63, so that the ink is transported outward through the first printing tank 63 and the printing operation is performed.

[0020] The buffer column 631 inside the first inkjet printing tank 63 has the function of buffering and adjusting ink distribution. After the ink reaches the first inkjet printing tank 63, it passes through the buffer column 631. The buffer column 631 changes the ink flow channel, so that the ink flows into the wafer 31 through the notch above the buffer column 631. When side printing, the ink can more easily reach the upper part of the nozzle of the wafer 31, realizing synchronous ink supply to all nozzles. (Because the printhead height of the one-inch thermal inkjet cartridge is 25.4 mm, which is more than twice the height of the 12.7 mm printhead of the half-inch thermal inkjet cartridge, it is easy to be affected by the gravity of the ink, which leads to the current problem that the upper part of the wafer cannot be supplied with ink when the one-inch thermal inkjet cartridge is side printing.)

[0021] Before the ink in the replenishment tank 61, the second printing tank 67, and the groove 62 is gradually consumed and reaches the equilibrium point, the ink pressure in the control cavity 5 is greater than the ink pressure in the replenishment tank 61. At this time, the sealing gasket 54 is tightly attached to the bottom of the control cavity 5, thereby sealing the control cavity hole 57. After the ink in the replenishment tank 61, the second printing tank 67, and the groove 62 is gradually consumed and reaches the equilibrium point, the ink pressure in the control cavity 5 is less than the ink pressure in the replenishment tank 61. At this time, the second composite membrane 7 located at the lower end of the replenishment tank 61 will exert an upward pushing force on the second end cap 55 due to the negative pressure inside the replenishment tank 61. Simultaneously, the T-shaped movable valve 51 moves upward, thereby causing the sealing gasket 54 to move upward and separate from the bottom of the control cavity 5. At this time, the ink in the control cavity 5 enters the replenishment groove 61 through the control cavity hole 57, and refills the spaces such as the replenishment groove 61, the second printing groove 67, and the groove 62 with ink. After filling, the ink pressure in the control cavity 5 is greater than the ink pressure in the replenishment groove 61. At this time, with the assistance of the first elastic element 52 and the second elastic element 56, the sealing gasket 54 is pressed tightly against the bottom of the control cavity 5 again, thereby resealing the control cavity hole 57. The ink in the replenishment slot 61 is adaptively replenished, thereby ensuring that the spaces such as the replenishment slot 61, the second printing slot 67, the groove 62 and the first printing slot 63 are in a constant ink capacity state for a long time, thus effectively ensuring sufficient and smooth ink supply and improving printing speed and efficiency. The replenishment tank 61, the second printing tank 67, the placement tank 65, the groove 62, and the first printing tank 63 form an independent negative pressure constant sealed area. Because this area has a low ink content, it is isolated from the ink in the ink storage chamber by opening and closing the control components. It is not affected by the gravity or pressure of the ink in the ink storage chamber, thereby effectively reducing the probability of ink leakage and other problems (currently, the use of spring contact method in thermal ink cartridges is prone to ink leakage).

[0022] After the ink filling hole 11 is sealed with steel balls, the ink storage chamber, the first flow channel 66, the second flow channel 68, and the control chamber 5 become another independent negative pressure constant sealed area, which is isolated from the ink in the replenishment tank 61, the second printing tank 67, the placement tank 65, the groove 62, and the first printing tank 63 by the opening and closing of the control component.

[0023] At the same time, under constant negative pressure, and in conjunction with the ink storage chamber, control chamber 5, control chamber hole 57, replenishment slot 61, second printing slot 67 and groove 62, the ink capacity is greatly increased and the production cost is reduced (it can hold up to 150 ml of ink and has a capacity 3.19 times higher than the current thermal ink cartridges, which are prone to ink leakage when the ink cartridge storage exceeds 45 ml under the current spring-loaded ink cartridge method). Simultaneously, under constant negative pressure, and in conjunction with the first flow channel 66, the first connecting hole 661, the second flow channel 68, and the third connecting hole 681, the ink in the ink storage cavity can effectively enter the replenishment tank 61 and other spaces. The replenishment tank 61 and other spaces have a small volume, which can ensure sufficient and smooth ink supply, and also concentrate residual ink in the replenishment tank 61 and other spaces. At the same time, the first composite film 4 and the second composite film 7 are used to increase the area through stretching process. After shrinking, they overlap with the contour of the inner frame 9, which effectively reduces the amount of residual ink in the ink storage cavity and other spaces (making the amount of residual ink account for 5%-10% of the total, while the amount of residual ink in the current thermally oxidized ink cartridges accounts for 15%-20% of the total).

[0024] Example 2: Figure 1 , Figure 2 , Figure 3 as well as Figure 4 As shown, the upper half 3 of the COT circuit board is mounted on the front end of the outer frame 1. A protection diode can be added to the driving circuit of the wafer 31 to effectively prevent the nozzles from burning out due to static electricity or insertion / removal operations, thus improving service life. A nozzle structure is provided at the front end of the wafer 31, and the nozzle structure consists of multiple nozzles. The cross-section of the nozzles is tapered with a narrow front and wide back. The front end of the first printing groove 63 passes through the outer frame 1 and is connected to the wafer 31. Ink is ejected outward through the nozzles. The number of nozzles in the nozzle structure can be 330, arranged in 22 columns with 15 rows per column (30 more than the 300 printheads of a traditional one-inch thermal ink cartridge, increasing the printing height by 10%). Multiple heating resistors are respectively placed in multiple nozzles, and the heating resistors are electrically connected to the driving circuit of wafer 31. The ink in the nozzle is thermally foamed through the heating resistors. Multiple thermistors are then installed on the upper half 3 of the COT circuit board, and all the thermistors are located on the outside of wafer 31. The multiple thermistors work together to detect the temperature on the nozzle structure.

[0025] The lower half 12 of the COT circuit board is placed on the left end of the outer frame 1, and the lower half 12 of the COT circuit board is electrically connected to the upper half 3 of the COT circuit board. The lower half 12 of the COT circuit board is equipped with a storage chip (1KB), a thermistor calibration resistor, and a control interface (52 contacts). The heating resistor is controlled to work through the lower half 12 of the COT circuit board. The storage chip is used to store ink cartridge factory information, customer unique encrypted ID information, optimal printing parameter information, ink cartridge remaining capacity information, etc., to improve the ink cartridge's own functions, reduce interaction difficulties, and adapt to the needs of modern development.

[0026] The thermistor calibration resistor in the lower half 12 of the COT circuit board has a resistance of 335Ω at 32°C and provides a reference value when calculating the temperature of the thermistor in wafer 31.

[0027] The control interface in the lower half 12 of the COT circuit board consists of 52 contacts used to control the addressing and ignition of the nozzles, and also leads out the communication interface between the thermistor and the memory chip. The control interface is the interface required by the thermal inkjet printer to select a nozzle to eject ink when printing images.

[0028] During assembly, the upper half 3 of the COT circuit board, including the wafer 31, is mounted to the front end of the outer frame 1 using high-temperature resistant and corrosion-resistant adhesive, so that the nozzle structure and the first printing groove 63 are interconnected and sealed. Then, the lower half 12 of the COT circuit board is set on the outer end of the outer frame 1 using high-temperature resistant and corrosion-resistant adhesive. At this time, the lower half 12 of the COT circuit board and the upper half 3 of the COT circuit board are electrically connected. Then, the ink injection hole 11 is used to fill the ink storage cavity and control cavity 5 formed by the inner frame 9, the lower end of the first composite film 4, the upper end of the second composite film 7, and the outer end of the auxiliary block 6 with appropriate ink. At this time, the ink enters the nozzle structure of the wafer 31. Then, the outer frame 1 and other components are installed on the thermal inkjet printer. At this time, the control part of the thermal inkjet printer is connected to the multiple control interfaces on the lower half 12 of the COT circuit board. When in use, the operator edits the images, numbers, text, etc. to be printed on the thermal inkjet printer. The thermal inkjet printer converts the image into an image format, cuts the image into the required dot matrix rectangles, analyzes the printing coordinates of each column, and transmits the signal to the control interface 12 on the lower half of the COT circuit board. The control interface performs addressing circuitry, finds the corresponding heating resistor, and the corresponding heating resistor works to quickly heat to a high temperature of over 300°C, generating countless tiny bubbles. Finally, large bubbles are formed, forcing ink droplets to be ejected from the corresponding nozzles, thus completing the printing operation. This process is repeated to print different types of images, numbers, text, and other markings required by the operator. During each printing process, the thermistor can adaptively adjust the voltage to reduce heat accumulation in the nozzle. After each printing, it can promptly eliminate air bubbles, causing the ink in the nozzle to shrink back. The surface tension generates suction to refill the ink in the first printing groove 63 into the nozzle structure of the wafer 31 that was consumed by printing. This ensures that external air does not easily enter through the nozzle, and that the negative pressure balance value inside the ink cartridge will not fail under long-term unsealed conditions. This is used to solve the problem that external air can easily enter through the nozzle of the current thermally induced ink cartridge, and that the negative pressure balance value inside the ink cartridge will fail under long-term unsealed conditions, resulting in ink leakage in the ink cartridge nozzle. Furthermore, the conical design of the nozzle cross-section, which is narrower at the front and wider at the back, allows the ink to be more concentrated during the vaporization and ejection process within the nozzle, resulting in a longer ejection distance, better ejection quality, and effectively increased ejection energy. This, in turn, increases the printing distance and effectively reduces the probability of accidental contact between the thermal inkjet printer and the printed item (currently, the nozzles in thermal inkjet cartridges use a cylindrical design, limiting the printing distance to 1-2mm, while the conical nozzle design, with the assistance of a constant negative pressure, allows the printing distance to reach 5-6mm).

[0029] During each print run, a protection diode is added to the drive circuit of wafer 31 to prevent the nozzles from burning out due to static electricity or cartridge insertion / removal. During each print run, the ambient temperature is measured using four thermistors on the upper half 3 of the COT circuit board and one thermistor calibration resistor on the lower half 12 of the COT circuit board to achieve a preheating function. The nozzles achieve ink ejection by heating the resistors; therefore, the ink ejection effect is affected by the ambient temperature, resulting in poor ink ejection in low-temperature environments. Thus, the ambient temperature can be measured using thermistors. When the ambient temperature is low, a short pulse is sent to the unselected column contacts during each print run to heat up the inactive nozzles without ejecting ink, thereby compensating for the influence of ambient temperature on the ejection energy.

[0030] During each inkjet printing process, four thermistors and one thermistor calibration resistor provide timely feedback on the nozzle area temperature, reducing the voltage to prevent heat buildup in the nozzle. If the thermal inkjet printer does not input accurate voltage and pulse width signals to the lower half 12 of the COT circuit board, the thermistors in the upper half 3 of the COT circuit board and the thermistor calibration resistor in the lower half 12 of the COT circuit board measure the nozzle temperature to automatically adjust the inkjet voltage and determine the optimal printing voltage for the current ink.

[0031] Example 3: Figures 13-15As shown, multiple hollow rods 644 extending to the upper end of the filter screen 64 are equidistantly installed on the lower end of the filter screen 64. The hollow rods 644 provide a mounting carrier for components such as the round rod 643. Two fixing rods 645 located on the lower side of the filter screen 64 are respectively set on the front and rear ends of the hollow rods 644, and the outward ends of the two fixing rods 645 are respectively connected to the front and rear walls of the groove 62. The two fixing rods 645 work together to increase the installation stability of the hollow rods 644. A round rod 643, with its lower end penetrating the hollow rod 644, is slidably connected to the upper end of the hollow rod 644. The round rod 643 provides a mounting carrier for components such as the float 641. The float 641, which is attached to the lower end of the hollow rod 644, is installed on the lower end of the round rod 643. The float 641 causes the round rod 643 to move up and down. Multiple fan blades 642 located on the lower side of the first composite membrane 4 are equidistantly arranged on the upper end of the round rod 643. The multiple fan blades 642 work together to achieve agitation. A spiral groove 646 is formed by an outward-facing indentation on the inner wall of the hollow rod 644. The fixed part of the rolling component is installed on the outer end of the round rod 643, and the rolling part of the rolling component is tumblingly connected to the spiral groove 646. The rolling component and the spiral groove 646 work together to make the round rod 643 rotate. The rolling component can be a universal ball bearing 647.

[0032] When the filter screen 64 becomes clogged due to ink clumping, the ink level in the groove 62 decreases due to ink consumption from the previous printing. This causes the float ball 641 to move downwards, which in turn causes the round rod 643 to move downwards along the hollow rod 644. This causes the universal ball bearing 647 to move along the spiral groove 646, which in turn causes the round rod 643 to move downwards and rotate. This causes multiple fan blades 642 to rotate and move downwards simultaneously, thereby agitating the ink in the placement groove 65 above the filter screen 64. This process breaks up the ink clumping, effectively ensuring a sufficient and smooth ink supply and improving printing speed and efficiency.

[0033] Although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A continuous jet one-inch industrial cartridge for thermal foaming, characterized by, include: Inner frame (9); A protective component, wherein an inner frame (9) is provided inside the protective component; An auxiliary block (6) is installed on the front wall inside the inner frame (9). The upper and lower end faces of the auxiliary block (6) coincide with the upper and lower end faces of the inner frame (9), and the auxiliary block (6) and the inner frame (9) are integrated. The upper end face of the auxiliary block (6) is recessed downward to form a control cavity (5). The first composite membrane (4) is enlarged in area by stretching process and then set on the upper end of the inner frame (9). The lower end of the first composite membrane (4) is connected to the upper end of the auxiliary block (6). The second composite membrane (7) is enlarged in area by stretching process and then installed at the lower end of the inner frame (9). The upper end of the second composite membrane (7) is connected to the lower end of the auxiliary block (6). The control component is located inside the control cavity (5); The ink replenishing component is installed on the auxiliary block (6) and is arranged in communication with the control cavity (5); The filter element is installed on the auxiliary block (6); The upper half (3) of the COT circuit board is located at the front end of the protective component. The upper half (3) of the COT circuit board has a wafer (31) and multiple thermistors at the front end. The multiple thermistors are located outside the wafer (31). The wafer (31) has a nozzle structure and multiple heating resistors inside. The lower half (12) of the COT circuit board is installed on the left end of the protective component. The front end of the lower half (12) of the COT circuit board is provided with a control interface, a storage chip and a thermistor calibration resistor, and the control interface, the storage chip and the thermistor calibration resistor are electrically connected to each other. The lower half (12) of the COT circuit board is electrically connected to the upper half (3) of the COT circuit board. The filter element includes a filter screen (64). The upper end of the auxiliary block (6) is recessed downward to form a placement groove (65). The filter screen (64) is installed at the bottom inside the placement groove (65). The bottom end of the placement groove (65) is recessed downward to form a groove (62). Multiple hollow rods (644) are installed at equal intervals at the lower end of the filter screen (64). The hollow rods (644) extend to the upper end of the filter screen (64). Fixing rods (645) are provided at both the front and rear ends of the hollow rods (644). The two fixing rods (645) are connected to the front and rear walls of the groove (62) respectively at their outward ends. The fixing rods (645) are located on the lower side of the filter screen (64). The upper end of the hollow rod (644) is slidably connected to a round rod (643). The lower end of the round rod (643) passes through the hollow rod (644). A float (641) is installed at the lower end of the round rod (643), and the float (641) is attached to the lower end of the hollow rod (644). Multiple fan blades (642) are equidistantly arranged at the upper end of the round rod (643), and the fan blades (642) are located on the lower side of the first composite membrane (4). The inner wall of the hollow rod (644) is recessed outward to form a spiral groove (646). A rolling member is installed at the outer end of the round rod (643), and the rolling part of the rolling member is rolledly connected to the spiral groove (646). The ink replenishment component includes a first flow channel (66) and a second flow channel (68). The upper end of the auxiliary block (6) is recessed downward to form the first flow channel (66) and the second flow channel (68). The cross-section of the second flow channel (68) is L-shaped. The first flow channel (66) is connected to the right end of the control cavity (5), and the second flow channel (68) is connected to the left end of the control cavity (5). The auxiliary block (6) has a third connecting hole (681) formed by a recessed rear end facing forward, and the front end of the third connecting hole (681) is connected to the rear end of the second flow channel (68). The auxiliary block (6) has a first connecting hole (661) formed by a recessed right end facing left, and the left end of the first connecting hole (661) is connected to the right end of the first flow channel (66).

2. The continuous jet one-inch industrial cartridge for heat foaming according to claim 1, characterized in that: The nozzle structure consists of multiple nozzles, and the cross-section of the nozzles is a cone shape with a narrow front and a wide back. Multiple heating resistors are respectively disposed in multiple nozzles. Multiple thermistors are electrically connected to the heating resistors in the wafer (31). The heating resistors and thermistors are electrically connected to the lower half (12) of the COT circuit board.

3. The continuous jet one-inch industrial cartridge for heat foaming according to claim 1, wherein: The upper end of the auxiliary block (6) forms a second printing groove (67) facing downwards, and the second printing groove (67) is located in front of the control cavity (5). The front end of the second printing groove (67) is connected to the rear end of the placement groove (65). The bottom end of the second printing groove (67) is recessed downwards to form a second connecting hole (671). The front wall of the groove (62) is recessed forward to form a first printing groove (63). A buffer column (631) is provided inside the first printing groove (63). The front end of the first printing groove (63) passes through the protective member and is connected to the wafer (31).

4. The continuous jet one-inch industrial cartridge for heat foaming according to claim 1, wherein: The control component includes a first end cap (53), which is installed in the control cavity (5). The upper surface of the first end cap (53) coincides with the upper surface of the auxiliary block (6). A first elastic element (52) is provided at the lower end of the first end cap (53). A T-shaped movable valve (51) is installed at the lower end of the first elastic element (52). A sealing gasket (54) is fitted on the outer end of the vertical cylindrical part of the T-shaped movable valve (51). The sealing gasket (54) is attached to the bottom of the control cavity (5). The bottom surface of the control cavity (5) is recessed downward to form a control cavity hole (57). The control cavity hole (57) is located at the lower end of the sealing gasket (54). The control cavity hole (57) has a cross-shaped structure and is located behind the second connecting hole (671). The lower end of the auxiliary block (6) is recessed upward to form a supplementary groove (61), and the upper end of the supplementary groove (61) is connected to the lower end of the control cavity hole (57) and the lower end of the second connecting hole (671). The second end cap (55) is movably installed in the supplementary groove (61). The upper end of the second end cap (55) is provided with a second elastic element (56). The upper end of the second elastic element (56) is connected to the top of the inside of the supplementary groove (61). The lower end of the vertical cylindrical part of the T-shaped active valve (51) passes through the control cavity hole (57) and is connected to the second end cap (55). The vertical cylindrical part of the T-shaped active valve (51) is located inside the second elastic element (56).

5. The continuous jet one-inch industrial cartridge for heat foaming according to claim 3, wherein: The protective component includes an outer frame (1), an inner frame (9) is installed inside the outer frame (1), a first protective cover (2) is provided at the upper end of the outer frame (1), a second protective cover (8) is installed at the lower end of the outer frame (1), the front end of the outer frame (1) is recessed to form an ink injection hole (11), and the ink injection hole (11) extends to the inner wall of the inner frame (9). The ink injection hole (11) is located on the right side of the auxiliary block (6). The upper half (3) of the COT circuit board is installed at the front end of the outer frame (1), and the lower half (12) of the COT circuit board is provided at the left end of the outer frame (1). The front end of the first inkjet groove (63) passes through the outer frame (1) and is arranged in communication with the wafer (31).

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