TWI625246B - Ink-jet cartrige structure - Google Patents

Abstract

The present invention is a liquid jet structure for performing ink jet printing of at least one liquid, comprising a printing die and a heating resistor disposed on the liquid crystal film and extending in the longitudinal direction of at least one axis array, the printing chip The length of the printing film is between 5.8 mm and 6.2 mm, and the width of the printing chip is 2,400. The heating resistance is 24.6 to 27.4 per square millimeter. The density is set on it.

Description

Liquid helium structure

This case relates to a liquid helium structure, especially a liquid helium structure suitable for three-dimensional printing.

Rapid Prototyping (RP technology) is developed based on the concept of constructing pyramid-like layer stacking. The main technical feature is the rapid molding, which can be used without any tools, molds and fixtures. Automatically and quickly convert any complex shape design into a 3D solid model, which greatly shortens the development cycle of new products and reduces R&D costs. It can ensure the time-to-market of new products and the success rate of new product development. Technology provides a more complete and convenient product design communication tool between technicians and non-technical personnel such as technicians and corporate decision makers, product users, etc., thus significantly improving the competitiveness of products in the market and enterprises. Rapid response to the market.

At present, RP technology has developed a 3D solid model by using jet printing technology combined with the precise positioning technology of the carrier. The production method is to first lay a layer of powder on top of the carrier and print on part of the powder by using the liquid jet printing technology. The high-viscosity binder allows the binder to adhere to the powder and solidify. The 3D solid model can be completed by repeating the above process layer stacking.

Conventionally, the printing module used in the general liquid jet printing technology is generally applied to the RP technology. For example, as shown in FIG. 1, the printing module 1 used in the general liquid jet printing technology is used. Set on a main body (not shown) for printing. The printing module 1 includes a printing platform 10, a carrier 11 and at least one liquid jet 12, the printing platform 10 includes a frame body 101 and a transmission shaft 102 spanning the frame body 101. The at least one liquid jet 12 is usually provided with two sprays on the drive shaft 102. 匣, that is, as shown in Fig. 1, the first liquid ejecting liquid 121 for accommodating the black liquid ejecting liquid and the first color liquid ejecting liquid (for example, cyan (C), yellow (Y), magenta (M)) The liquid discharge cartridge 122 is disposed on the carrier 11 so that the carrier 11 and the liquid discharge cartridge 12 disposed thereon can be opposite to the transmission shaft 102 of the printing platform 10. Reciprocating actuation of the X-axis.

When the printing module 1 performs the printing operation of the RP technology, the printing platform 10 carries the carrier 11 and the liquid jet 12 disposed thereon to perform a reciprocating operation in the Y-axis direction, and then Through the liquid jet 12, the reciprocating action of the X-axis direction of the left and right movements along the transmission shaft 102 can be performed on the bearing base 11, so that the reciprocating operation is performed through the X-axis and the Y-axis direction, and the spray can be performed. The liquid sprays of the liquids contained in the liquid helium 12 are sprayed on the construction material (not shown) laid by the construction vehicle (not shown), and the above process is repeated to carry out the layer stacking operation, thereby completing the 3D object. Solid model (not shown).

However, in the implementation of the rapid prototyping operation of the 3D object, in addition to the black and color spray liquid, the liquid spray cartridge 12 needs to additionally contain a high-viscosity adhesive to bond the construction material, and then The layers are stacked to form a 3D object, so the conventional rapid prototyping device needs to be provided with an additional carrier and a liquid jet for accommodating a high-viscosity adhesive, which results in the overall volume of the printing module 1. Increase, while increasing the cost of the carrier and the liquid helium.

The conventional liquid ejecting structure may include a printing chip, a heating resistor, and a perforated plate, wherein the liquid ejecting structure is assembled on a body of a liquid storage device, and the heating resistance is controlled by the printing chip, and the liquid storage device is Providing a liquid spray to the heating resistor, so that the heating resistor heats the liquid spray according to the trigger of the printing wafer, so that the liquid stored in the liquid storage chamber is heated and sprayed onto the three-dimensional object through the corresponding orifice of the orifice plate. As for the control of the droplet discharge time, it corresponds to the pixel point of the pattern to be printed.

Usually, the liquid storage system is disposed inside the liquid discharge device, and is laterally moved over the three-dimensional object by the driving of a carrying system, so that the liquid discharge liquid of the liquid storage can be moved to the correct according to the pattern to be printed. The position is sprayed, that is, the carrying system causes relative motion between the liquid jet and the three-dimensional object along a scanning axis, wherein the scanning axis refers to a width direction parallel to the three-dimensional object, and the driving component A single scan means that the carrier system drives the spray to move over approximately the entire width of the three-dimensional object, however, between each single scan, the three-dimensional object will be along a feed axis perpendicular to the scan axis. Advance, that is, the direction along the length of the three-dimensional object.

When the spray cymbal moves along the scan axis, a line of intermittent lines will be generated, and all the intermittent lines will be combined to form the text or image of the printed pattern, as for the printing along the feed axis of the three-dimensional object. The rate is referred to as the density of the discontinuous lines along the axis of the three-dimensional object, so the greater the density of the discontinuous lines on the inkjet media feed axis, the higher the print resolution along that axis.

The prior art improves the density of the discontinuous lines along the advancing axis of the three-dimensional object by increasing the number of heating resistors of the liquid helium to improve the printing resolution and increase the printing speed, although the heating resistance of the liquid jet is increased. The number can be increased to speed up the printing speed, but a large number of heating resistors generate a large amount of heat energy, which causes the temperature of the liquid helium to rise rapidly, which not only affects the printing quality but is more likely to damage the entire liquid helium.

One of the solutions developed by the industry is to avoid the rapid increase of the temperature of the liquid helium by increasing the size of the liquid helium, but the price of the liquid spray device is reduced in the highly competitive liquid jet printing market. It is very fast, increasing the size of the spray sputum will increase the cost of producing the liquid spray device and reduce the market competitiveness.

Moreover, when the number of orifices of the liquid jet is large, the liquid jet is designed to be serially transported to save the number of printed wafer input/output (I/O), but because of the need to drive the heating resistor for printing the wafer The control method still needs to combine address control and print data signals, but the design of the address control in the conventional print wafer is such that when the number of addresses for controlling the liquid jet heating is n, the position decoder needs Correspondingly, n lines are arranged for connection to the corresponding inkjet driving circuit. For example, when the number of addresses for controlling the liquid jet heating is 20, the position decoder needs to set 20 lines correspondingly, but with With the increase in the number of heating resistors, the conventional design will increase the area of the wafer and increase the size of the wafer to be printed, so how to reduce the address control is an important issue to save the area of the printed wafer.

Therefore, how to develop a liquid helium structure that can improve the above-mentioned conventional technology is also There is an urgent need to solve the problem.

The main purpose of this case is to provide a liquid helium structure capable of high-resolution high-speed printing, and at the same time reduce costs by effectively utilizing the space of the liquid jet, providing high-performance printing with lightweight and inexpensive components.

In order to achieve the above object, a broader aspect of the present invention is to provide a liquid jet structure for performing ink jet printing of at least one liquid, comprising a print wafer, and being disposed on the liquid crystal film and extending in the longitudinal direction. At least one axial array of heating resistors having a length of between 15.1 mm and 15.7 mm, a width of the printed wafer of between 5.8 mm and 6.2 mm, and a total of 2,400 heating resistors for the printed wafer. The heating resistor is disposed thereon at a density of 24.6 to 27.4 per square millimeter.

Another object of the present invention is to provide a liquid jet structure which solves the conventional problem of increasing the number of heating resistors of the liquid jet and increasing the size of the printing wafer, which will increase the cost of the production of the liquid discharging device, and the conventional address control. The method will increase the disadvantages such as the area of the printed wafer.

In order to achieve the above object, the present invention further provides a liquid jet structure comprising an inkjet control circuit for receiving a plurality of strobe signals, a plurality of clock signals, a data signal, an address signal, a heating control signal, and a pre-preparation. The thermal control signal and the power signal comprise: a data signal converter, receiving a serial data signal, and converting into a plurality of parallel data signal outputs; and an address signal converter receiving a serial address signal and converting the data into a number a first parallel address signal and a plurality of second parallel address signal outputs; a primary address decoder coupled to the address signal converter for decoding the plurality of the first parallel address signals into a plurality of a three-parallel address signal; a primary address decoder coupled to the address signal converter for decoding a plurality of the second parallel address signals into a plurality of fourth parallel address signals; a buffer for receiving a heating a signal and a preheating signal for removing the heating signal and the noise processing stable output of the preheating signal; and a plurality of inkjet driving circuits, each of the inkjet driving circuits comprising: a main warming control Road; a gate print data, the main address decoder receiving the address signal wherein a third one in parallel, the sub-address Solutions One of the fourth parallel address signal of the code device and one of the parallel data signals of the data signal converter to perform a logic operation to output a printed data signal for connection and input to the main warm-up control circuit; a preheating data gate, receiving one of the third parallel address signals of the primary address decoder, and one of the fourth parallel address signals of the secondary address decoder to perform a logic operation to output a preheating data a signal is connected to the main preheating control circuit; a heating control reverse circuit receives the input of the heating control signal to output a heating control signal or a reverse heating control signal to the main preheating control circuit; a preheating control reverse circuit, receiving the input of the preheating control signal to output a preheating control signal or a reverse warming control signal to the main preheating control circuit; a driving transistor switch having a control end Connected to the main warm-up control circuit, and has an input end and an output end, and the output end is connected to the ground; and a heating resistor receives a power signal and the drive One input connected transistor switch.

Another object of the present invention is to provide a liquid jet structure suitable for a printing module of a rapid prototyping device, which has a modular liquid jet, and each liquid jet has three liquid storage chambers, and two of them The liquid storage chamber is used for accommodating different colors of the liquid spray, and the liquid storage chamber is for accommodating the adhesive agent, thereby performing the rapid-molding printing operation of the 3D object.

In order to achieve the above object, a broader aspect of the present invention is to provide a liquid jet structure, which is implemented in a printing module of a rapid prototyping device, the printing module comprising: a printing platform having a frame body and a drive shaft. The driving shaft is spanned on the frame body; the bearing seat is disposed on the transmission shaft; and at least two identically modular liquid jets are correspondingly disposed on the carrier, wherein the liquid jet has a body and a body There are three liquid storage chambers for respectively accommodating different printing liquids, and at least two bodies of the same modularized liquid jet accommodating at least one same printing liquid are used for performing rapid prototyping printing. operation.

A further object of the present invention is to provide a liquid jet structure which will print the timing signal of the address signal An corresponding to the data signal PD, and the preheating data signal PFD is designed as a timing signal corresponding to the address signal An-1, such that All the heating resistors will not be kept warm for a long time, so that the entire liquid crystal film will accumulate a relatively high temperature, which will affect the efficiency of the operation of the liquid crystal film or more serious. The heating resistor R of the spray-emitting liquid crystal sheet does not work.

In order to achieve the above object, a broader aspect of the present invention provides a liquid raft structure in which a switch for receiving a printed data signal in the main warm-up control circuit requires a corresponding address signal to be an An timing. The switch for receiving a preheating data signal has a timing corresponding to the address signal of An-1.

1, 2‧‧‧Printing Module

10, 20‧‧‧Printing platform

101, 201‧‧ ‧ frame

102, 202‧‧‧ drive shaft

11, 21‧‧‧ bearing seat

12, 22, 22X, 22Y‧‧‧ spray 匣

121‧‧‧First spray 匣

122‧‧‧Second spray gun

220‧‧‧Upper cover

221, 221x, 221y‧‧‧ body

221a‧‧‧ wall

222‧‧‧Flexible circuit board

222a‧‧‧Electrical contact points

223, 223x, 223y, 42‧‧‧ spray LCD

223a‧‧‧ orifice film

224, 224x, 224ax, 224bx, 224cx, 224dx, 224y, 224ay, 224by, 224cy, 224dy‧‧‧ liquid supply tank

225, 226, 227, 225x, 226x, 227x, 225y, 226y, 227y‧ ‧ liquid storage room

228‧‧‧ Droplet generator

228a‧‧‧spray hole

228b, R‧‧‧heating resistor

229‧‧‧ Identification wafer

Distance between two adjacent heating resistors in P‧‧‧1 axis group

P/2‧‧‧Vertical distance between adjacent heating resistors of different axis groups

Wd2‧‧‧ spray LCD width

Length of Ld2‧‧‧ spray LCD

Ls2‧‧‧ Length of each supply tank

Lr2‧‧‧ the total length of each row of heating resistors

Sd2‧‧‧width of each supply tank

Cd‧‧‧ spacing between two adjacent liquid supply tanks

41‧‧‧Inkjet control circuit

Clock‧‧‧clock signal

Data_odd‧‧‧odd address data signal

Data_even‧‧‧ even address data signal

Address, An, An-1‧‧‧ address signal

Strobe‧‧‧ strobe signal

HV‧‧‧ power signal

MF‧‧‧heat control signal

PF‧‧‧Preheat control signal

MF-N‧‧‧reverse heating control signal

PF-N‧‧‧reverse warm-up control signal

PD‧‧‧Printing information signal

PFD‧‧‧Preheating data signal

Bank‧‧‧ Circuit Block

H, H1, H2‧‧‧ control endpoints

COM‧‧‧Combined endpoint

4211, 4212‧‧‧ data signal converter

4221, 4222‧‧‧ Address Signal Converter

4231, 4232‧‧‧ main address decoder

4241, 4242‧‧‧ address decoder

4251, 4252‧‧‧ buffer

Od0~od14, m0~m2, S0~S1, MA0~MA4, SA0~SA3‧‧‧

426‧‧‧Inkjet drive circuit

4260‧‧‧Preheating data gate

4261‧‧‧Printing data gate

MA_X, SA_Y, Data_Z‧‧‧ pins

4262‧‧‧Main warm-up control circuit

4263‧‧‧Drive transistor switch

4264‧‧‧heat control reverse circuit

4265‧‧‧Preheat control reverse circuit

M1‧‧‧ first switch

M2‧‧‧ second switch

M3‧‧‧ third switch

M4‧‧‧fourth switch

M5‧‧‧ fifth switch

M6‧‧‧ sixth switch

M7‧‧‧ seventh switch

M8‧‧‧ eighth switch

M9‧‧‧ninth switch

M10‧‧‧ tenth switch

Figure 1 is a schematic view showing the structure of a rapid prototyping printing module using a general printing technique.

FIG. 2 is a schematic structural view of a printing module of the rapid prototyping apparatus according to the first preferred embodiment of the present invention.

FIG. 3A is a schematic view showing the appearance of a liquid jet structure of a printing module of the rapid prototyping apparatus according to the first preferred embodiment of the present invention.

Fig. 3B is a bottom view showing the structure of the liquid helium structure shown in Fig. 3A.

Fig. 3C is a schematic cross-sectional structural view of the liquid helium structure shown in Fig. 3A.

4A is a schematic cross-sectional structural view of the liquid jet structure of the printing module of the rapid prototyping apparatus of the first preferred embodiment of the present invention.

Fig. 4B is a schematic cross-sectional view showing the structure of A-A' of the liquid helium structure shown in Fig. 4A.

FIG. 5A is a schematic cross-sectional structural view of the liquid jet structure of the printing module of the rapid prototyping apparatus of the first preferred embodiment of the present invention.

Fig. 5B is a schematic cross-sectional view showing the structure of B-B' of the liquid helium structure shown in Fig. 5A.

Figure 6 is a schematic view showing the ink arrangement of the liquid jet structure of the printing module of the rapid prototyping apparatus of the first preferred embodiment of the present invention.

FIG. 7A is a perspective view showing the three-dimensional structure of the liquid crystal film of the liquid jet structure of the printing module of the rapid prototyping apparatus of the first preferred embodiment of the present invention.

FIG. 7B is a structural schematic view of the liquid crystal film removing orifice plate of the liquid jet structure of the printing module of the rapid prototyping device according to the first preferred embodiment of the present invention.

Figure 8 is a schematic view showing the structure of the ink jet control circuit and the liquid crystal film of the liquid jet structure.

Fig. 9A is a schematic view showing the circuit structure of the liquid crystal cell of the liquid jet structure shown in Fig. 8.

Figure 9B: It is a schematic diagram of the enlarged structure of the circuit of part C of Figure 9A.

Fig. 10 is a schematic view showing the structure of a main preheating control circuit of a liquid crystal film of a liquid jet structure.

Some exemplary embodiments embodying the features and advantages of the present invention are described in detail in the following description. It is to be understood that the present invention is capable of various modifications in various aspects, and is not to be construed as a limitation.

Referring to FIG. 2, the printing module 2 is suitable for use in a rapid prototyping device (not shown), and includes a printing platform 20, a carrier 21 and a plurality of modular liquid jets 22, and a printing platform 20 includes a frame 201 and a drive shaft 202, and the drive shaft 202 is disposed on the frame 201. The carrier 21 is disposed on the drive shaft 202. In this embodiment, the plurality of modular sprays are disposed. The 22 series are two identical liquid jets 22X, 22Y, and the two spray liquids 22X, 22Y are correspondingly disposed on the bearing seat 21, so the carrier 21 and the two liquid discharge ports 22X, 22Y disposed thereon can be opposite to The drive shaft 202 of the printing platform 20 is reciprocally displaced in a single direction (for example, the direction of the X-axis), and the printing liquid is introduced into the plurality of modular liquid jets 22 to perform rapid prototyping. .

When the printing module 2 performs the printing operation of the RP technology, the reciprocating operation in the Y-axis direction is performed through the printing platform 20 with the carrier 21 and the two liquid jets 22X and 22Y disposed thereon. And reciprocating through the two spray nozzles 22X, 22Y on the bearing seat 21 along the transmission shaft 202 in the X-axis direction for moving left and right, so that the reciprocating interaction is performed through the X-axis and the Y-axis direction. Actuation, the printing liquid contained in the two liquid jets 22X, 22Y can be sprayed on the construction material (not shown) laid on the construction carrier (not shown), and the above process is repeated to implement the layer. Stacking work, and then Complete the solid model of the 3D object (not shown).

In some embodiments, the printing liquid may be a binder and a color ink, and the color ink may be a pigment ink or a dye ink, etc., and is not limited thereto. In still other embodiments, the printing liquid may be a colorless or monochromatic printing liquid, such as a transparent bonding agent (T) printing liquid, a cyan (C) printing liquid, a yellow (Y) printing liquid, Magenta (M) printing liquid or other printing liquids such as light cyan, light magenta, grayscale, etc., and not limited to this.

Please also refer to FIG. 3A, the liquid discharge port 22 of the printing module 2 is composed of an upper cover 220, a body 221, a flexible circuit board 222 and a liquid crystal film 223, wherein the upper cover 220 covers the body 221 Above, the liquid crystal film 223 is disposed below the body 221, and has a liquid storage space inside the body 221 to store the liquid. The body 221 has a wall surface 221a, and when the liquid discharge port 22 is mounted on a rapid prototyping device (not shown), the wall surface 221a can be disposed corresponding to the carrier 21 (shown in Fig. 2). The flexible circuit board 222 is disposed on the wall surface 221a and has a plurality of electrical contact points 222a. When the liquid discharge cartridge 22 is disposed on the carrier 21 of the rapid prototyping device, the flexible circuit board passes through the liquid discharge port 22. The electrical contact 222a on the 222 is electrically connected to a conductive portion (not shown) on the carrier 21. Further, the liquid discharge port 22 is further provided with an identification wafer 229 for performing identification/control and/or monitoring communication of electrical signals between the rapid prototyping device and the liquid crystal film 223 of the liquid discharge port 22.

Further, as shown in FIG. 3B, the liquid crystal film 223 is provided at the bottom of the body 221 of the liquid discharge cartridge 22, and has a plurality of liquid supply grooves 224. In this embodiment, the number of the plurality of liquid supply tanks is 4, but not limited thereto. In other embodiments, the number of the plurality of liquid supply tanks may also be three, and the number of the liquid supply tanks may be varied according to actual application conditions, and is not limited thereto. Further, in the present embodiment, as shown in Fig. 3C, the inside of the body 221 of the liquid discharge cartridge 22 has three liquid storage chambers 225, 226, and 227. In other words, the liquid storage space inside the body 221 is divided into three liquid storage chambers 225, 226, and 227 for respectively accommodating the printing liquids of different colors or the same color. For example, in the present embodiment, the liquid storage chamber 225 is for accommodating the transparent adhesive (T), the liquid storage chamber 226 is for accommodating the cyan (C) color ink, and the liquid storage chamber 227 is for The magenta (M) color ink is accommodated, but not limited thereto, and the three liquid storage chambers 225, Each of 226 and 227 is in communication with a plurality of liquid supply grooves 224 of the liquid crystal film 223 disposed at the bottom of the body 221, respectively. Taking the embodiment as an example, the liquid storage chamber 225 is connected to the two central liquid supply tanks 224b and 224c for conveying the adhesive agent (T) to the central two supply liquid supply tanks 224b and 224c, and the liquid storage chamber 226 Then, it is connected to the liquid supply tank 224a on one side for conveying the cyan (C) color ink contained therein to the liquid supply tank 224a, and the liquid storage chamber 227 is connected to the liquid supply tank 224d on the other side. The utility model is configured to deliver the magenta (M) color ink contained therein to the liquid supply tank 224d.

Referring to FIGS. 4A and 4B, it can be seen that the three liquid storage chambers 225, 226, and 227 inside the body 221 of the liquid discharge cartridge 22 are respectively plural to the liquid crystal liquid crystal sheets 223 disposed at the bottom of the body 221, respectively. The liquid supply tank 224 is connected to each other, and the structure of the inside of the liquid storage chamber 225 can be seen from the sectional structure diagram shown in FIG. 4B. With the cross-sectional structure diagram shown in FIG. 4A, it can be seen that the liquid storage chamber 225 is internally housed and stored in a transparent adhesive bond. The agent (T) flows from the inside to the bottom of the liquid storage chamber 225 to flow to the liquid crystal sheet 223 at the bottom of the body 221, and flows to the middle two liquid supply tanks 224b, 224c which are in communication with each other. To carry out the liquid supply operation of the transparent adhesive (T).

Please refer to FIG. 5A and FIG. 5B for further description. The structure of the inside of the liquid storage chambers 225 and 226 can be seen in the cross-sectional structure diagram shown in FIG. 5A, and the cyan (C) color stored in the liquid storage chamber 226 can be seen. The ink flows from the liquid storage chamber 226 to the bottom portion to flow to the liquid crystal film 223 at the bottom of the body 221, and flows to the liquid supply tank 224a communicating therewith to perform cyan (C) color ink. Liquid supply operation.

As for the internal structure of the liquid storage chamber 227 in the present embodiment, which is similar to the liquid storage chamber 226 and symmetrically disposed, the internal structure and the manner of ink flow are similar to those of the liquid storage chamber 226, and therefore will not be described again.

However, it can be understood from the above-mentioned 3C, 4A, 4B, 5A, and 5B that the liquid droplets having the three liquid storage chambers 225, 226, and 227 are provided in the present embodiment. The liquid crystal film 223 of the liquid supply tank 224 can simultaneously output the two-color color ink and the transparent adhesive (T), thereby facilitating the rapid printing of the 3D object.

Please refer to Figure 6 and with Figure 2, at least one of the sprays 22 in this case can be but not It is limited to two spray ports 22X, 22Y, and the spray ports 22X, 22Y respectively have three liquid storage chambers 225x, 226x, 227x and 225y, 226y, 227y. In this embodiment, the liquid storage chamber 225x of the liquid discharge cartridge 22X is for accommodating the transparent adhesive (T), and the liquid storage chamber 226x is for accommodating the cyan (C) color ink and the liquid storage chamber 227x. The liquid storage chamber 225y is used for accommodating the transparent adhesive (T), and the liquid storage chamber 226y is for accommodating the yellow (Y) color material. The ink and liquid storage chamber 227y is used for accommodating black (K) color ink, but is not limited thereto. And the plurality of liquid supply tanks 224x and 224y on the liquid crystal liquid crystal sheets 223x and 223y at the bottom of the liquid crystal lumps 221x and 221y of the liquid crystals 22X and 22Y are respectively corresponding to the liquid storage chambers 225x, 226x, 227x and 225y, 226y, 227y. Connected. Taking the embodiment as an example, the liquid supply tank 224ax of the liquid crystal film 223x of the liquid jet 22X is connected to the liquid storage chamber 226x for outputting the cyan (C) color ink contained therein and being disposed on the spray. The two liquid supply tanks 224bx and 224cx of the liquid crystal panel 223x are connected to the liquid storage chamber 225x for outputting the transparent adhesive (T) and the liquid supply tank 224dx of the liquid crystal sheet 223x. The liquid chamber 227x is connected to output the magenta (M) color ink contained therein. The liquid supply tank 224ay of the liquid crystal film 223y of the liquid jet port 22Y is connected to the liquid storage chamber 226y for outputting the yellow (Y) color ink contained therein and disposed at the center of the liquid crystal film 223y. The liquid supply tanks 224by and 224cy are connected to the liquid storage chamber 225y, and are also connected to the liquid storage chamber 227y for outputting the transparent adhesive (T) and the liquid supply tank 224dy for spraying the liquid crystal sheet 223y. For corresponding output of the black (K) color ink that it accommodates.

In this way, through the two liquidized sprays 22X, 22Y in the present case, different colors of color, black (K) color ink and transparent adhesive (T) printing liquid can be used for rapid prototyping. The device implements a multi-color printing operation for rapid prototyping of 3D objects.

Referring to FIGS. 7A and 7B, the liquid crystal film 223 is provided with a plurality of liquid supply grooves 224. In the present embodiment, the number of the plurality of liquid supply tanks 224 is four, that is, they have liquid supply tanks 224a, 224b, 224c, and 224d, and on both sides of the long axis edge of each liquid supply tank 224. A row of droplet generators 228 are respectively disposed, but not limited thereto. Each row of droplet generators 228 is disposed on both sides of the liquid supply tanks 224a, 224b, 224c, and 224d in a staggered manner, so that the liquid crystal of this embodiment is sprayed. The sheet 223 has two rows × 4 = 8 rows of droplet generators 228, and each droplet generator 228 is composed of a heating resistor 228b and a corresponding liquid discharging hole 228a, wherein the droplet generator The heating resistor 228b of 228 is disposed on the liquid crystal film 223 for supplying the printing liquid communication provided by the liquid storage chambers 225, 226, 227 which communicate with the liquid supply tank 224, and the heating resistor 228b is covered by a orifice plate 223a. And the liquid discharge hole 228a is provided on the orifice plate 223a for corresponding to the heating resistor 228b. When the printing liquid is supplied and heated by the heating resistor 228b, hot bubbles are formed and sprayed by the liquid injection hole 228a. The droplets are ejected to complete the printing of the droplet generator 228.

Further, as shown in Fig. 7B, the heating resistor 228b of the present invention is disposed on the liquid crystal cell 223 and is arranged in an array of at least one axis extending in the longitudinal direction. In the present embodiment, the liquid crystal cell 223 has four liquid supply grooves 224 having an array of four axes (four parallel to the direction of the reference axis L), and are spaced apart from each other with respect to the vertical direction of the reference axis L, each axis. The array is arranged in a heating resistor 228b of at least two axial groups, and is disposed on both sides of the liquid supply tank 224, and two heating resistors 228b of one axis group are arranged in a staggered manner on the two corresponding liquid supply tanks 224. On the side, the liquid crystal cell 223 of the present embodiment has a heating group 228b of eight axis groups.

The heating resistor 228b may include 300 or more heating resistors 228b per one axis group, and the total number of the heating resistors 228b may be up to 2400, but not limited thereto.

The distance between two adjacent heating resistors 228b in each of the axis group heating resistors 228b is P, and the vertical distance between adjacent heating resistors 228b of different axis groups is P/2. In some embodiments, the distance between P can range from 1/600 to 1/1200 inches, and P/2 ranges from 1/1200 to 1/2400 inches. In the present embodiment, the distance of P is 1/600 inch, and P/2 is 1/1200 inch, but not limited thereto.

The liquid crystal film 223 of the liquid jet 22 of the present embodiment may have a rectangular structure. The width Wd2 of the liquid crystal film 223 is about 5.8 mm (mm) to 6.2 mm (mm), and the length Ld2 of the liquid crystal film 223 is about 15.1. Mm (mm) to 15.7 mm (mm), so the total area is 92.4 mm (mm), the aspect ratio is Ld2 / Wd2 = 15.1 / 6.2 = 2.4 ~ Ld2 / Wd2 = 15.7 / 5.8 = 2.7, so the aspect ratio interval It is 2.4~2.7 times.

The width Wd2 of the liquid crystal film 223 is preferably 6 mm (mm), and the length Ld2 is preferably 15.4. Millimeter (mm), so the total area is 92.4 mm (mm), and the aspect ratio is Ld2/Wd2 = 15.4/6 = 2.5 times.

Further, the total number of the heating resistors 228b is 2,400. Therefore, the density of the heating resistor 228b per square millimeter (mm2) on the liquid crystal cell 223 of the present invention is about 2400 / (15.4 × 6) = 25.9.

In addition, the width Sd2 of each liquid supply tank 224a, 224b, 224c, 224d may be 0.3 millimeters (mm), and the length Ls2 of each liquid supply tank 224a, 224b, 224c, 224d may be 12.8 millimeters (mm), and two The pitch Cd of the adjacent liquid supply tanks 224a, 224b, 224c, and 224d may be 1.27 millimeters (mm), so the total width of the four liquid supply tanks 224a, 224b, 224c, and 224d is proportional to the BB sectional area of the liquid crystal liquid crystal sheet 223. It is: (Sd2/Wd2) × 4 = (0.3 mm / 6 mm) × 4 = 20%.

In addition to reducing the cost and increasing the printing speed by using more heat-dissipating resistors on the wafer to effectively utilize the liquid helium space, the liquid jets of the present invention can also reduce the internal wafer of the liquid jet by reducing the liquid jet space. The address control method is used to reduce the wafer area, so that the size of the liquid jet is relatively reduced, thereby reducing the cost of producing an ink jet printer.

Please refer to FIG. 8 , which is a schematic diagram of the structure of the ink jet control circuit and the liquid crystal film of the liquid jet. As shown, the inkjet control circuit 41 operates to transmit a clock signal clock, an odd address data signal Data_odd, an even address data signal Data_even, an address signal address, a strobe signal strobe, a heating control signal MF, and a warm-up. The signal PF is controlled to the end of the liquid crystal cell 42 to control the operation of the entire liquid jet. Of course, the liquid crystal film 42 also requires a power signal to control the operation of the heating resistor to eject the droplets.

Further, Fig. 7B shows that the combined orifice resolution of the liquid crystal cell 42 is 1200 dots per inch (dpi). If the combined nozzle resolution of the inkjet wafer 42 is 600 dots per mile (dpi), the odd address data signal Data_odd and the even address data signal Data_even can be achieved as long as one of the address data signals exists. The ink jet control circuit 41 operates in conjunction with a control circuit connected to the liquid crystal film 42.

The clock signal clock is the basis for the control signal input to the liquid crystal film 42, the odd address data signal Data_odd and the even address data signal Data_even are the input to the liquid crystal film 42. The material data PD, the address signal address is a position signal input to the liquid crystal film 42, and is used to drive a heating circuit that needs to perform inkjet printing. The strobe signal strobe is used to control the liquid crystal film 42 to transfer the inkjet control circuit 41. The signal latch latches the signal, and the heating control signal MF is a signal for causing the heating circuit of the liquid jet to print the liquid droplets. The preheating control signal PF is a signal for preheating the liquid crystal film 42.

Referring to FIGS. 9A and 9B, the inkjet control circuit 41 can be divided into an odd address data signal Data_odd and an even address data signal Data_even to be transmitted to the print data signal PD transmitted to the liquid crystal film 42 to The liquid crystal film 42 is sprayed, so that the internal circuit of the liquid crystal film 42 is divided into two parts to respectively receive the odd address data signal Data_odd and the even address data signal Data_even and perform the ink jet operation together with other corresponding circuits, so that the configuration is The combined orifice resolution of the inkjet wafer 42 is 1200 dots per inch (dpi).

To achieve a combined nozzle resolution of the inkjet wafer 42 of 600 dots per mile (dpi), as long as the first portion is configured to receive the odd address data signal Data_odd (as in the left half of Figure 9A) or The second part is used to receive the even address data signal Data_even (such as one of the right half of Figure 9A).

Hereinafter, the combined orifice resolution of the ink jet wafer 42 applied in this embodiment will be described as 1200 dots per mile (dpi).

The second part is used to receive the even-numbered address data signal (such as the right half of Figure 9A). The first part is to receive the odd-numbered address data signal Data_odd (as in the left half of Figure 9A). And by the first data signal converter (ser 2 par_odd) 4211, the first address signal converter (ser 2 par_address) 4221, the first main address decoder (MA) 4231, the first address decoder (SA) 4241, a first buffer (FB) 4251, and an inkjet driving circuit 426 constituting a plurality of sets of circuit blocks.

And by the second data signal converter (ser 2 par_even) 4212, the second address signal converter (ser 2 par_address) 4222, the second main address decoder (MA) 4232, the second address decoder (SA 4242, a second buffer (FB) 4252, and an inkjet driving circuit constituting a plurality of groups of circuit blocks (Bank) The circuit 426 is substantially similar to the circuit structure of the first part, and the difference is that the first data signal converter 4211 and the second data signal converter 4212 respectively receive the printed data signal as an odd bit. Address or even address, so the following will only be explained in the first part, that is, the left half of the circuit receiving the odd address data signal Data_odd is taken as an example, and the right half of the even address data signal Data_even is no longer used. Circuit.

Referring to FIG. 9B again, the first data signal converter 4211 receives the clock signal clock, the odd address data signal Data_odd, and the strobe signal strobe output by the inkjet control circuit 41, and the original input string is odd. The digital address data signal Data_odd is converted into a parallel signal output of a total of 15 bits outputted through the wiring lines od0 to od14. The first address signal converter 4221 receives the clock signal clock, the address signal address and the strobe signal strobe output by the inkjet control circuit 41, and converts the address signal originally input into the serial port into m0 via m0. ~m2 and S0~S1 are outputted by a total of 5 bits of the second parallel address signal output, wherein the signal output by m0~m2 is transmitted to the first main address decoder 4231 and decoded by the line MA0 ~MA4 outputs a 5-bit third parallel address signal, and the signals outputted by the lines S0~S1 are transmitted to the first address decoder 4241 and decoded, and 4 bits are outputted by the lines SA0~SA3. The fourth parallel address signal.

The first buffer 4251 receives the heating control signal MF and the warm-up control signal PF output by the ink-jet control circuit 41, and is mainly used to remove the noise of the heating control signal and the warm-up control signal and enhance the signal driving capability to increase the signal. The stability is transmitted, and the processed heating control signal and the warm-up control signal are transmitted to the inkjet driving circuit 426.

Each of the inkjet driving circuits 426 mainly includes: a main preheating control circuit 4262, a preheating data gate 4260, a printing data gate 4261, a heating control reverse circuit 4264, a preheating control reverse circuit 4265, and a The transistor switch 4263 and a heating resistor R are driven.

The main warm-up control circuit 4262 receives one of the third parallel address signals output by the primary address decoder 4231, one of the fourth parallel address signals output by the secondary address decoder 4241, and the data signal conversion. One of the parallel data signals of the device 4211 to perform a logic operation outputting a column The printed data signal PD is connected to the main preheating control circuit 4262, that is, the printed data gate 4261 has three pins MA_X, SA_Y and Data_Z, and the pin MA_X is connected to one of the wires MA0~MA4. , SA_Y is connected to one of the cables SA0~SA3, and Data_Z is connected to one of the cables od0~od14, and the print data gate 4261 will receive the first primary address decoder 4231 and the first address decoder 4241. The output address signal address and the odd address data signal Data_odd transmitted by the first data signal converter 4211 are subjected to a multiplication logic operation to output an operation result, that is, a high and low potential signal.

The preheating data gate 4260 receives one of the third parallel address signals of the primary address decoder 4231 and one of the fourth parallel address signals of the secondary address decoder 4241 to perform a logical operation output. The thermal data signal PF is connected to the main preheating control circuit 4262, that is, the preheating data gate 4260 has two pins MA_X and SA_Y, and the pin MA_X is connected to one of the wires MA0 to MA4. The pin SA_Y is connected to one of the wires SA0~SA3, and the preheating data gate 4260 receives the address signal address output by the first main address decoder 4231 and the first address decoder 4241, and performs a multiplication logic. The operation is to output an operation result, that is, a high and low potential signal.

The heating control reverse circuit 4264 receives the input of the heating control signal MF to output a heating control signal MF or a reverse heating control signal MF-N to the main warm-up control circuit 4262.

The warm-up control reverse circuit 4265 receives the input of the warm-up control signal PF to output a warm-up control signal PF or a reverse warm-up control signal PF-N to the main warm-up control circuit 4262.

The driving transistor switch 4263 has a control terminal connected to the main preheating control circuit 4262, and has an input end and an output end, and the output end is connected to the ground.

The heating resistor R receives a power signal HV and is connected to one of the input terminals of the driving transistor switch 4263.

For example, the main warm-up control circuit 4262 can be a boost circuit (L→H circuit), which is a printed data gate 4261, a preheating data gate 4260, a heating control reverse circuit 4264, and a preheating control reverse circuit. 4265 connection, and heating control reverse circuit 4264, preheat control reverse circuit 4265 and first The buffer 4251 is connected to receive the operation result output by the print data gate 4261, and the heating control reverse circuit 4264 and the warm-up control reverse circuit 4265 respectively receive the heating control signal MF and the pre-output outputted by the first buffer 4251. Thermal control signal PF.

When the operation result output by the preheating data gate 4260 is a high potential signal (having a voltage signal), the main warm-up control circuit 4262 will select to receive the warm-up control signal PF and the warm-up control signal PF from the low-potential signal (none The voltage signal is converted into a high-potential signal (having a voltage signal), and is mainly used to trigger the driving of the transistor switch 4263 to be turned on, and a power signal HV is transmitted to the heating resistor R, so that the temperature of the heating resistor R will rise, so that Part of the spray and spray liquid crystal sheets are preheated to a specific temperature.

On the contrary, when the operation result output by the print data gate 4261 is a high potential signal (having a voltage signal), the main warm-up control circuit 4262 will select to receive the heating control signal MF and the heating control signal MF from the low-potential signal (none The voltage signal is converted into a high-potential signal (having a voltage signal), and is mainly used to trigger the driving of the transistor switch 4263 to be turned on, and a power signal HV is transmitted to the heating resistor R, so that the temperature of the heating resistor R will rise to The spray liquid is heated to generate bubbles, and the spray liquid is ejected.

The inkjet driving circuit 426 included in each group of circuit blocks only corresponds to one data line, that is, one of the wires od0~od14, and the address signal address is mainly divided in the liquid crystal film 42 of the present case. The primary address signal and the secondary address signal, that is, the prior art uses a single address decoder to decode the address signal address, and the present case simultaneously uses the first primary address decoder 4231 and the first address. The decoder 4241 performs the process, wherein the primary address signal is responsible for M bits, the secondary address signal is responsible for N bits, and M and N are natural numbers, causing the first primary address decoder 4231 and the first address decoding. The device 4241 forms a M x N row juxtaposed signal to be delivered to the ink jet driving circuit 426 having the print data gate 4261 and the heating resistor R as an ink ejection control signal.

In this embodiment, the primary address signal is responsible for 5 bits, that is, M=5, and the secondary address signal is responsible for 4 bits, that is, N=4, and the primary address signal, that is, the first primary address decoder 4231, is arranged. The 5-bit third parallel address signal output by the line MA0~MA4, the secondary address signal is the 4-bit fourth parallel address signal output by the first address decoder 4241 via the lines SA0~SA3. Third parallel address signal to And the fourth parallel address signal is multiplied by the print data gate 4261 to generate the same total number of addresses as the original address, that is, M×N=5×4=20, which can solve the problem that the conventional technology needs to set 20 lines. The problem of the size of the wafer layout is increased, and the area of the liquid crystal film occupied by the shrinkage reduction line is reduced to reduce the wafer area, so that the size of the liquid crystal film is relatively reduced, thereby reducing the cost of producing the liquid crystal film.

Please refer to the following list 1. It is the second parallel address signal input to the first main address decoder 4231 for the m0~m2 cable, and the first input to the first address decoder 4241 for the S0~S2 cable. The two-column address signal, the corresponding table corresponding to the 20 addresses is solved:

Of course, the number of the lines output by the first primary address decoder 4231 and the first address decoder 4241 is not limited to M=5 and N=4, and may be adjusted, for example, when controlling When the number of addresses is 16, the number of lines of the first main address decoder 4231 may be M=4, and the first address decoder 4241 is also maintained at N=4, and the two are multiplied by M×N= 4 × 4 = 16.

The main preheating control circuit 4262 of the present invention is mainly applicable to the liquid crystal film 42 of the liquid jet, and receives the power signal HV, the printed data signal PD, the preheating data signal PFD, the preheating control signal PF, and the reverse warming control signal. PF-N, heating control signal MF, reverse heating control signal MF-N and connected to the common terminal COM for preheating part of the liquid spray and liquid crystal film, or heating part of the liquid spray and generating The bubbles further push the spray liquid out of the liquid discharge hole 228a of the liquid crystal film.

The warm-up control signal PF outputted in the warm-up control reverse circuit 4265 and the reverse warm-up control signal PF-N are in inverse relationship with each other, and the heating control signal MF outputted in the heating control reverse circuit 4264 It is inversely related to the reverse heating control signal MF-N.

In some embodiments, the heating control reverse circuit 4264 and the preheat control reverse circuit 4265 may respectively include two inverters (not shown) to output a control signal, that is, the preheat control reverse circuit 4265 The input warm-up control signal PF is inverted to the reverse-preheat control signal PF-N output, which is an inverted output signal, and the heating control reverse circuit 4264 can reverse the input heating control signal MF to the reverse direction. The heating control signal MF-N outputs are mutually inverted output signals.

The driving transistor switch 4263 has a control terminal H, and mainly controls whether the heating resistor R is heated or preheated by the control terminal H. When the control terminal H is a high potential signal (having a voltage signal), the control driving transistor switch 4263 is turned on, and the heating resistor R will receive the power signal HV of the power source terminal for heating or preheating, and the control terminal H is Controlled by the main warm-up control circuit 4262.

As shown in FIG. 10, the main warm-up control circuit 4262 mainly includes a first switch M1, a second switch M2, a third switch M3, a fourth switch M4, a fifth switch M5, a sixth switch M6, and a seventh switch. M7, eighth switch M8, ninth switch M9, and tenth switch M10, and the first switch M1 to the tenth switch M10 may be MOS transistors.

The first switch M1 has an input terminal connected to the power signal, has a control terminal H1, is connected to the control terminal H of the driving transistor switch 4263, and has an output terminal H2.

The second switch M2 has an input terminal connected to the power signal, and has an output end connected to the control terminal H of the driving transistor switch 4263 and the control terminal H1 of the first switch, and has a control end connected to the The output terminal H2 of the first switch M1.

The third switch M3 has a control terminal connected to the heating control signal MF, and has an input end connected to the output end of the first switch M1 and the control end of the second switch circuit M2, and has an output end.

The fourth switch M4 has a control terminal connected to the printed data signal PD, has an input terminal connected to the output end of the third switch M3, and has an output terminal connected to the common terminal COM (ground).

The fourth switch M4 and the third switch M3 can be respectively turned on by the print data signal PD and the heating control signal MF. When the printing data signal PD and the heating control signal MF are high-potential signals (having a voltage signal), the third switch M3 and the fourth switch M4 are turned on, and the control terminal of the second switching circuit M2 is mainly controlled to trigger the driving of the transistor switch. The control terminal H of 4263 causes the driving transistor switch 4263 to be turned on, and at the same time, a power signal HV is transmitted to the heating resistor R, so that the temperature of the heating resistor R will rise to heat the liquid to generate bubbles, so that the liquid is sprayed. Spray onto the inkjet media.

The fifth switch M5 has a control end connected to the preheating control signal PF, and has an input end connected to the input end of the third switch, the output end H2 of the first switch, and the control end of the second switch circuit, And has an output.

The sixth switch M6 has a control terminal connected to the preheating data signal PFD, and has an input terminal connected to the output end of the fifth switch M5, and an output terminal connected to the common terminal COM (ground). Therefore, whether the sixth switch M6 and the fifth switch M5 are turned on is controlled by the preheating data signal PFD and the warm-up control signal PF, respectively.

When the preheating data signal PFD and the warm-up control signal PF are high-potential signals (with voltage signals) When the fifth switch M5 and the sixth switch M6 are turned on, the control terminal of the second switch circuit M2 is mainly used to trigger the control terminal H of the driving transistor switch 4263 to drive the transistor switch 4263 to be turned on, and a power signal is transmitted at the same time. HV to the heating resistor R, so that the temperature of the heating resistor R will rise, so that part of the liquid spray and the liquid crystal film are preheated to a specific temperature.

The seventh switch M7 has a control end connected to the reverse heating control signal MF-N, and has an input end connected to the control end H1 of the first switch M1, the output end of the second switch M2, and the driving transistor The control terminal H of the switch 4263 has an output.

The eighth switch M8 has a control terminal connected to the printed data signal PD, has an input terminal connected to the output end of the seventh switch M7, and has an output terminal connected to the common terminal COM (ground).

The seventh switch M7 and the eighth switch M8 are connected between the control terminal H of the driving transistor switch 4263 and the common terminal COM, and the seventh switch M7 and the eighth switch M8 are respectively connected in series to receive the reverse heating control signal MF. -N and the print data signal PD, mainly controlling whether the seventh switch M7 and the eighth switch M8 are turned on by the reverse heating control signal MF-N and the print data signal PD. When the reverse heating control signal MF-N and the printing data signal PD are high potential signals (having a voltage signal), the seventh switch M7 and the eighth switch M8 are turned on, causing the driving transistor switch 4263 to not operate.

The ninth switch M9 has a control end connected to the reverse warm-up control signal PF-N, and has an input end connected to the input end of the seventh switch M7, the control end H1 of the first switch M1, and the second The output of the switch M2 and the control terminal H of the driving transistor switch 4263 have an output.

The tenth switch M10 has a control end connected to the preheating data signal PFD, has an input end connected to the output end of the ninth switch M9, and has an output end connected to the common terminal COM (ground).

The ninth switch M9 and the tenth switch M10 are also connected between the control terminal H of the driving transistor switch 4263 and the common terminal COM, and the ninth switch M9 and the tenth switch M10 respectively receive the reverse warm-up control signal PF- N and the preheating data signal PFD, mainly by the reverse warm-up control signal PF-N and The preheating data signal PFD controls whether the ninth switch M9 and the tenth switch M10 are turned on. When the preheating data signal PFD and the reverse warming control signal PF-N are high potential signals (having a voltage signal), the ninth switch M9 and the tenth switch M10 are turned on, causing the driving transistor switch 4263 to not operate.

When the inkjet control circuit 41 is to perform an ink ejection operation, the power supply signal HV, the print data signal PD, the preheating data signal PFD, the warm-up control signal PF, the reverse warm-up control signal PF-N, and the heating are performed. The control signal MF and the reverse heating control signal MF-N control the heating resistor R for heating or preheating.

The preheating data signal PFD of the sixth switch M6 of the above embodiment can be always turned on, but all the heating resistors R are kept warming up all the time, so that the entire liquid crystal film 42 will accumulate a relatively high temperature, which will affect the liquid crystal. The operation efficiency of the sheet 42 is more serious, causing the heating resistor R of the liquid crystal film 42 to burn out and fail to operate.

According to the above description, the present embodiment needs to improve the above-mentioned missing. Therefore, the best mode of the embodiment is to print the timing signal of the address signal An corresponding to the data signal PD, and the preheating data signal PFD is designed to correspond to The timing signal of the address signal An-1 is such that the address signal An is matched with the different printed data signals Data0, Data1, Data2, ..., Data14, etc. to generate the printed data signal PD through the print data gate 4261 and the preheat data gate 4260. And preheating data signal PFD, for example, printing data signal Data1 and address signal A2 generating output signal D1A2 via printing data gate 4261, and preheating data signal A1 generating output signal via preheating data gate 4260 is A1. That is, when the heating resistor R performs the heating operation, the address signal corresponding to the heating resistor R is An, that is, the heating operation is controlled by the printing data signal PD and the heating control signal MF, and the heating resistor R is to perform the warm-up operation. Then, it is preheated by the preheating control signal PF and the preheating data signal PFD. Therefore, the corresponding address signal received by the heating resistor R for performing the heating operation is An, and the corresponding address signal received by the heating resistor R for performing the preheating operation is An-1, so that only the pre-heating operation heating resistor is used. R first performs the preheating operation, and does not have other heating resistors R to perform the preheating operation, so that all the heating resistors R do not always maintain the preheating, so that the entire liquid crystal film 42 will accumulate a relatively high temperature, resulting in an influence. The performance of the operation of the liquid crystal film 42 is more severe, and the heating resistor R of the liquid crystal film 42 is burnt and cannot be operated.

In other words, when the print data signal PD is a high potential signal (having a voltage signal), the voltage signal of the control terminal H of the drive transistor switch 4263 is controlled by the heating control signal MF to control the heating resistor R to be heated.

When the preheating data signal PFD is a high potential signal (having a voltage signal), the voltage signal of the control terminal H of the driving transistor switch 4263 is controlled by the preheating control signal PF to control the heating resistor R to be warmed up.

Therefore, when the inkjet control circuit 41 performs the ink ejection operation, if the print data signal PD and the heating control signal MF are high potential signals (having a voltage signal), and the corresponding address signal received by the print data signal PD is An Therefore, the main preheating control circuit 4262 causes the heating resistor R to heat part of the liquid ejecting liquid by the heating control signal MF to generate air bubbles, and then pushes the liquid ejecting liquid to the liquid ejecting hole 228a of the liquid crystal cell.

If the printed data signal PD is not a low potential signal (no voltage signal), the preheating data signal PFD and the warming up control signal PF are high potential signals (with voltage signals), and the preheating data signal PFD receives The corresponding address signal is An-1, so the main warm-up control circuit 4262 controls the heating resistor R to preheat the partial spray and the liquid jet by the warm-up control signal PF.

When the liquid jet printing is completed, the heating control signal MF becomes a low potential signal (no voltage signal), and the reverse heating control signal MF-N is a high potential signal (having a voltage signal), and the data signal PD is printed. Still continuing to be a high potential signal (having a voltage signal), and the corresponding address signal received by the printed data signal PD is An, so that the seventh switch M7 and the eighth switch M8 will be turned on, and the other switches are not turned on. The seventh switch M7 and the eighth switch M8 pull down the potential of the control terminal H of the first switch M1 and the control terminal H of the driving transistor switch 4263 to a low potential signal (no voltage signal), so that the heating resistor R stops heating.

When the print data signal PD is a low potential signal (no voltage signal), and the preheating data signal PFD and the warm-up control signal PF are high-potential signals (having a voltage signal), and the preheating data signal PFD receives The corresponding address signal is An-1, the fifth switch M5 and the sixth switch M6 will be turned on, and the other switches are not turned on, and the control terminal H potential of the driving transistor switch 4263 can be triggered by the second switch M2. It is a high potential signal (having a voltage signal), and the power signal is transmitted to the heating resistor R, so that the heating resistor R preheats part of the liquid spray and the liquid crystal film.

When the warm-up control signal PF is a low-potential signal (no voltage signal) after the warm-up is completed, the reverse warm-up control signal PF-N is a high-potential signal (having a voltage signal), and the preheating data signal PFD remains In order to continue to be a high-potential signal (having a voltage signal), and the corresponding address signal received by the preheating data signal PFD is An-1, the ninth switch M9 and the tenth switch M10 are turned on, and the other switches are not turned on. The ninth switch M9 and the tenth switch M10 pull down the potential of the control terminal H of the first switch M1 control terminal H1 and the driving transistor switch 4263 to a low potential signal (no voltage signal), so that the heating resistor R stops preheating.

According to the concept of the present invention, the control signals of the inkjet control circuit 41, that is, the printing data signal PD, the preheating data signal PFD, the heating control signal MF, and the preheating control signal PF, may have different voltage levels depending on the printer model. Different, and the preheating timing of the heating resistor R, for the printing data signal and the corresponding address signal is An (for example, A2), only input to the printing data gate 4261, and the output printed data signal is PD. At the same time, the address signal An-1 (for example, A1) is only input to the preheating data gate 4260, and the output preheating data signal PFD is generated. That is, the preheating data signal PFD before the address signal A2(An) and the corresponding address signal are A1(An-1), which can be correspondingly input to the main preheating control circuit 4262, and the heating resistor R is caused to be performed. Preheat.

In some embodiments, the control signal voltage is approximately 3.3 volts to achieve power savings and efficiency. Similarly, the driving transistor switch 4263 of the present case is triggered by the second switch M2 and transmits the power signal to the control terminal H of the driving transistor switch 4263, and then the driving transistor switch 4263 is turned on by the power source signal, so the present invention can Controlling the transistor switch 4263 with a smaller voltage control signal makes the control method more efficient and convenient.

In summary, the liquid helium structure of the present invention mainly uses a staggered arrangement to place more heating resistors on the wafer to effectively utilize the liquid helium space to reduce cost and increase printing speed, and more preferably by the main Address decoder and secondary address decoder to replace the conventional single address decoder, reduce the liquid crystal film The wiring area is reduced to reduce the wafer area, so that the size of the liquid crystal film is relatively reduced, thereby reducing the cost of producing an ink jet printer.

Therefore, the spray raft structure of this case is of great industrial value and is submitted in accordance with the law. This case has been modified by people who are familiar with the technology, but it is not intended to be protected by the scope of the patent application.

Claims (22)

A liquid jet structure suitable for printing a module of a rapid prototyping device, the printing module comprising a printing platform, a carrier and at least two identical modular liquid jet structures, the printing platform having a body and a transmission shaft, the transmission shaft is spanned on the frame body, the carrier is disposed on the transmission shaft for performing inkjet printing of at least one printing liquid, and each of the liquid jets The structure comprises: a body having three liquid storage chambers for respectively accommodating the different printing liquids; and a printing film having a length of 15.1 mm to 15.7 mm and a width of 5.8. Between millimeters and 6.2 millimeters, and having a heating resistor disposed on the at least one axis array extending in the longitudinal direction, and the heating resistor has a total of 2400, and the heating resistor is disposed thereon at a density of 24.6 to 27.4 per square millimeter; Wherein at least two identically modularized liquid helium structures are disposed on the carrier, and at least two of the same modularized liquid helium structures accommodate at least one of the same adhesive to perform rapid prototyping Printing job. The liquid jet structure as described in claim 1, wherein the length of the print wafer is preferably 15.4 mm. The liquid jet structure of claim 1, wherein the width of the print wafer is preferably 6 mm. The liquid helium structure according to claim 1, wherein the length ratio of the printed wafer is 2.4 to 2.7 times. The liquid jet structure as described in claim 1, wherein the printed wafer has an aspect ratio of 2.5 times. The liquid jet structure of claim 1, wherein the heating resistor of each of the array of the printed wafers is arranged in at least two axes along mutually parallel and mutually spaced axes. group. The liquid jet structure according to claim 1, wherein the printing chip has a total of four axial array heating resistors arranged in eight axis groups along mutually parallel and mutually spaced axes. The liquid helium structure of claim 6, wherein each of the axis groups of the print wafer has 300 heating resistors. The liquid helium structure according to claim 1, wherein the density of the heating resistor for printing the wafer is preferably set at a density of 25.9 per square millimeter. The liquid helium structure of claim 8, wherein each of the plurality of heating resistors comprises a total length of 0.5 inches. The liquid helium structure according to claim 7, wherein the distance between two adjacent heating resistors in the same axis group is 1/600 inch. The liquid helium structure according to claim 1, wherein the liquid helium structure further comprises at least one liquid supply tank disposed between the at least two axial groups of the heating resistors of each of the arrays of the axes. The liquid helium structure according to claim 12, wherein each of the liquid supply tanks has a width of 0.3 mm and a length of 12.8 mm. The liquid helium structure according to claim 12, wherein the spacing between the adjacent two liquid supply tanks is 1.27 mm. The liquid jet structure of claim 3, wherein the width of the print wafer is 6 mm, and the total width of the liquid supply tank accounts for 20% of the cross-sectional area of the print wafer. The liquid jet structure according to claim 1, wherein one of the printing liquids accommodated in the liquid storage chamber is a bonding agent, and the other two liquid printing chambers accommodate the different printing liquids. It is a color ink. The liquid helium structure as described in claim 1, wherein the liquid jet further An identification chip is provided to perform electrical identification communication between the fingerprint identification and the rapid prototyping device. The liquid jet structure as described in claim 1, comprising: an inkjet control circuit, receiving a plurality of strobe signals, a plurality of clock signals, a data signal, an address signal, and a heating control signal a preheating control signal and a power signal, comprising: a data signal converter, receiving a serial data signal, and converting into a plurality of parallel data signal outputs; and an address signal converter receiving a serial address signal, And converting into a plurality of first parallel address signals and a plurality of second parallel address signal outputs; a primary address decoder coupled to the address signal converter for decoding the plurality of the first parallel address signals a plurality of third parallel address signals; a primary address decoder coupled to the address signal converter for decoding the plurality of second parallel address signals into a plurality of fourth parallel address signals; a buffer, Receiving a heating signal and a preheating signal for removing the heating signal and the noise processing stable output of the preheating signal; and a plurality of inkjet driving circuits, each of the inkjet driving circuits comprising: a main preheating control a circuit gate, receiving one of a third parallel address signal of the primary address decoder, one of a fourth parallel address signal of the secondary address decoder, and the data signal converter Parallelizing one of the data signals to perform a logic operation to output a printed data signal for connection to the main warm-up control circuit; a preheating data gate to receive the third parallel address signal of the main address decoder One of the fourth parallel address signals of the address decoder for performing a logic operation to output a preheating data signal for connecting the input to the main warming control circuit; a heating control reverse circuit Receiving input of the heating control signal to output a heating control a signal or a reverse heating control signal to the main warm-up control circuit; a preheat control reverse circuit, receiving the input of the warm-up control signal to output a warm-up control signal or a reverse warm-up control signal to In the main preheating control circuit, a driving transistor switch has a control terminal connected to the main preheating control circuit, and has an input end and an output end, and the output end is connected to the ground; and a heating resistor, A power signal is received and coupled to one of the input terminals of the drive transistor switch. The liquid raft structure of claim 18, wherein the main preheating control circuit of the inkjet driving circuit comprises: a first switch having an input terminal connected to the power signal, having a control end, and The control terminal of the driving transistor switch is connected, and has an output end; a second switch has an input end connected to the power signal, having an output end, and a control end of the driving transistor switch and the first switch The control terminal is connected, and has a control terminal connected to the output end of the first switch; a third switch has a control terminal connected to the heating control signal, having an input end connected to the output end of the first switch a control end of the second switch circuit, and having an output end; a fourth switch having a control end connected to the printed data signal, having an input end connected to the output end of the third switch, and having an output The terminal is connected to the ground; a fifth switch has a control end connected to the preheating control signal, and has an input end connected to the input end of the third switch, the first opening The output end and the control end of the second switch circuit have an output end; a sixth switch having a control end connected to the preheating data signal and having an input end connected to the output end of the fifth switch And having an output connected to the ground; a seventh switch having a control end connected to the reverse heating control signal and having an input The input end is connected to the control end of the first switch, the output end of the second switch, and the control end of the driving transistor switch, and has an output end; an eighth switch has a control end for connecting the printed data The signal has an input end connected to the output end of the seventh switch, and has an output end connected to the ground; a ninth switch having a control end connected to the reverse warm-up control signal, having an input end, connected An input end of the seventh switch, a control end of the first switch, an output end of the second switch, and a control end of the driving transistor switch, and having an output end; a tenth switch having a control end and connecting The preheating control signal has an input terminal connected to the output end of the ninth switch and an output terminal connected to the ground. The liquid jet structure according to claim 19, wherein the main warm-up control circuit of the ink-jet driving circuit outputs a high-potential signal (having a voltage signal) when the printed data gate and the preheating data gate are outputted. The printing data signal is input to the fourth switch, the preheating data signal is input to the sixth switch, and the fifth switch is selected to receive the preheating control signal, and the second switch is turned on to trigger the driving transistor switch to be turned on to promote the heating. The resistor performs a warm-up action. The liquid raft structure of claim 19, wherein the main preheating control circuit of the inkjet driving circuit outputs a high potential signal (having a voltage signal) when the printing data gate is output, and the preheating When the thermal data gate has no voltage signal output, the printing data signal is input to the fourth switch, and the third switch is selected to receive the heating control signal, so that the driving switch transistor is turned on by the first switch, and the heating resistor is heated. Inkjet printing action. The liquid-jet structure as described in claim 20 or 21, wherein the fourth switch of the fourth switch is selected to receive a printed data signal, and the required corresponding address signal is an An timing, and the The six switches and the tenth switch are selected to receive a preheating data signal, and the corresponding address signal is required to be the timing of An-1.