Abstract: This specification discloses a manufacturing method for an ID circuit of inkjet chips. The method includes the steps of: forming an ID circuit at the predetermined position for an ink feed slot near a print head chip, not cutting or cutting the ID circuit during the ink feed slot processing according to the ID characters to form an ID circuit that is able to recognize the type of the inkjet chip. This method is particularly applicable to monochromic and color print head chips using a shared chip module. The ID circuit is manufactured during the process of making the ink feed slot. Therefore, the manufacturing process is simple without any additional requirement.

Abstract: An image alignment device and method for a biochip-manufacturing apparatus. The biochip-manufacturing apparatus comprises a conveying device and a plurality of dispensers. The image alignment device comprises an image pickup unit and a plurality of adjusting units. The image pickup unit is disposed on the conveying device. The conveying device conveys the image pickup unit to a predetermined position corresponding to one of the dispensers so that the image pickup obtains the image of the corresponding dispenser. Each of the adjusting units is coupled to the image pickup unit and corresponds to the dispensers respectively, and adjusts the position of the corresponding dispenser based on the image pickup unit.

Abstract: A driver transistor structure of an inkjet print head chip and the method for making the same. Having several body contacts distributed all over the source of an active region of a large area MOSFET (Metal Oxide Semiconductor Field Effect Transistor), an equivalent RB from the MOSFET channel to the body contact is greatly diminished as the distance between them is reduced, thereby preventing the occurrence of a secondary breakdown. Since the body contact is installed inside the active region without defining in advance a body contact region and making the body contact in the field oxide layer outside the active region, about 20% of the driver transistor structure can be saved to lower the average manufacturing cost of each chip.

Abstract: This specification discloses a manufacturing method for an ID circuit of inkjet chips. The method includes the steps of: forming an ID circuit at the predetermined position for an ink feed slot near a print head chip, not cutting or cutting the ID circuit during the ink feed slot processing according to the ID characters to form an ID circuit that is able to recognize the type of the inkjet chip. This method is particularly applicable to monochromic and color print head chips using a shared chip module. The ID circuit is manufactured during the process of making the ink feed slot. Therefore, the manufacturing process is simple without any additional requirement.

Abstract: A driver transistor structure of an inkjet print head chip and the method for making the same. Having several body contacts distributed all over the source of an active region of a large area MOSFET (Metal Oxide Semiconductor Field Effect Transistor), an equivalent RB from the MOSFET channel to the body contact is greatly diminished as the distance between them is reduced, thereby preventing the occurrence of a secondary breakdown. Since the body contact is installed inside the active region without defining in advance a body contact region and making the body contact in the field oxide layer outside the active region, about 20% of the driver transistor structure can be saved to lower the average manufacturing cost of each chip.

Abstract: A common print head module that can accommodate either a single-color or multi-color inkjet print head comprises an ink cartridge having an ink output, and an inkjet chip arranged over the ink output. The ink cartridge internally includes ink channels that terminate through a surface of the ink output, wherein two adjacent ink channels are spaced apart by a channel wall. The channel wall has a top surface lower than the surface of the ink output where the ink channels terminate. The ink channels communicate with ink slots of the inkjet chip. When accommodating a single-color print head, the ink flows out through the ink channels over the channel wall. When accommodating a multi-color print head, the ink slots of the inkjet chip have slot walls that are sealed with the channel walls such that inks of different colors can be separately ejected through the ink slots.

Abstract: A common print head module that can accommodate either a single-color or multi-color inkjet print head comprises an ink cartridge having an ink output, and an inkjet chip arranged over the ink output. The ink cartridge internally includes ink channels that terminate through a surface of the ink output, wherein two adjacent ink channels are spaced apart by a channel wall. The channel wall has a top surface lower than the surface of the ink output where the ink channels terminate. The ink channels communicate with ink slots of the inkjet chip. When accommodating a single-color print head, the ink flows out through the ink channels over the channel wall. When accommodating a multi-color print head, the ink slots of the inkjet chip have slot walls that are sealed with the channel walls such that inks of different colors can be separately ejected through the ink slots.

Abstract: A method for bonding inkjet printer cartridge elements utilizes adhesive film to bond an inkjet cartridge element to an inkjet printer cartridge body. The adhesive film is preformed to a desired shape and formed with selected openings to match with troughs located on the ink cartridge element bonding spot of the inkjet printer cartridge body. The adhesive film is placed on the bonding spot between the inkjet cartridge element and the inkjet printer cartridge body, and pressure or heat is then applied to bond the inkjet cartridge element, adhesive film and inkjet printer cartridge body tightly and securely.

Abstract: A method of arranging orifices on a print head and the corresponding structure. The invention uses a design that changes relative positions of orifices on a print head so that different ink droplets for the same pixel fall in different areas of the pixel. The printing quality is enhanced because of a more homogeneous distribution of the ink droplets.

Abstract: A multi-color level inkjet head chip structure includes a pre-mixing space. The pre-mixing space communicates with different ink storage spaces through a plurality of providing elements, then the volume of different colored inks is controlled by the ink providing elements to be injected into the pre-mixing space. The desired color level ink is created in the pre-mixing space in advance. Finally, the desired color level pre-mixed ink is ejected onto the recording media (such as paper or other similar material) through an inkjet printing driver at the pre-mixing space. Therefore, the desired color level can be produced by only one inkjet printing at any printing area, which will be extremely beneficial for increasing the speed of inkjet printing.

Abstract: A method of arranging orifices on a print head and the corresponding structure. The invention uses a design that changes relative positions of orifices on a print head so that different ink droplets for the same pixel fall in different areas of the pixel. The printing quality is enhanced because of a more homogeneous distribution of the ink droplets.

Abstract: The present invention is a multi-color level inkjet head chip structure, at least including a pre-mixing space. The pre-mixing space communicates with different ink storage spaces through a plurality of providing elements, then the volume of different colored inks is controlled by means of the ink providing elements to be injected into the pre-mixing space. The desired color level ink is created in the pre-mixing space in advance. Finally, the desired color level pre-mixed ink is jected onto the recording media (such as paper or other similar material) through an inkjet printing driver at the pre-mixing space. Therefore, the desired color level can be produced by only one inkjet printing at any printing area, which will be extremely beneficial for increasing the speed of inkjet printing.

Abstract: A back-shooting inkjet print head. The inkjet print head comprises: a first substrate having a plurality of thermal resistors formed on a back surface thereof, and a plurality of orifices formed through the first substrate and respectively located proximate to the resistors; an isolation layer having a plurality of ink channels formed therein, wherein the isolation layer is arranged onto the back surface of the first substrate such that the region of each ink channel covers that of one of the resistors and one of the orifices; and a second substrate having an ink supply window, wherein the second substrate is arranged on the isolation layer covering the ink channels, such that the ink supply window, connected to the ink channels, is located at one side of the resistors while the orifices of the first substrate are located at the other side of the resistors and face the second substrate.

Abstract: The ink cartridge of the present invention uses a directional fibrous collection enclosed within a bushing to temporally retain the ink therein, wherein at least one controlled capillary portion is provided. The controlled capillary portion can be formed by the bushing or by a predetermined shape located in the cartridge. The capillary forces of the controlled capillary portion are stronger than the one of other portion of the directional fibrous collection. The flow rate of the ink can be precisely controlled by the directional fibrous collection, and the controlled capillary portion can efficiently drain out the ink to the printhead and there is no bubble left therein.

Abstract: A function test device for optical print head heaters in thermal bubble printers, which includes: a test end power supply to provide the power needed for the test device; a linear optical coupling device serially connected between a pulse power supply for driving a print head circuit and the print head heater to detect variation of a triggering current; and an amplification circuit to amplify an output signal of the linear optical coupling device and send the signal to a microprocessor.

Abstract: A method and a structure for measuring the temperature of heating elements of an ink-jet printhead are provided, wherein an extra metal layer or semiconductor layer is formed on the ink-jet chip having driving elements to precisely measure the temperature of each individual heating element. The structure includes: an ink-jet device including a heating element for heating liquid ink; a transistor driver for driving a transistor to control heating of the heating element; and a temperature-sensing layer located between the ink-jet device and the transistor driver and under the heating element, the temperature-sensing layer having two terminals, one connecting to the transistor and the other connecting to an electrode terminal connected to a printer, wherein the ink-jet device connects to the transistor driver through the temperature-sensing layer.

Abstract: An inkjet printhead chip structure and a method of estimating the working life through the detection of any defect on the chip structure. The method includes laying a metallic layer such as a tantalum layer over the chip and then shaping the metallic layer into a protective layer circuit. A portion of the metal protective layer covers the heating elements embedded in the chip. In printing, the heating elements heat up the ink to produce jets of ink. However, a portion of the heat is transferred to the metal protective layer thereby raising its temperature. Heat on the metal protective layer combined with any strayed residual ink bubbles that impinge upon the surface of the metal protective layer causes the metal to age. Since resistance of the metal protective layer will increase proportionally to the amount of aging, a measurement of the resistance is capable of estimating how much longer a given chip is suitable for use.

Abstract: A pressure control device for regulating the ink pressure of a multi-reservoir ink cartridge. The pressure regulator employs an external spring or springs plate assembly mounted between two neighboring ink reservoirs. The external surfaces of the spring or assembly are attached to the respective side face of the reservoirs. Each ink reservoir has at least a side face formed from a flexible non-elastic material. When all of the ink reservoirs are full, the spring or assembly is in a relaxed state. By withdrawing a small quantity of ink from each ink reservoir, atmospheric pressure exerts forces on the ink reservoirs leading to a small contraction. The resulting distortion of the spring or assembly produces a force that resists further contraction of the reservoirs. Since the pressures inside the reservoirs are smaller than external atmospheric pressure, a back-pressure that prevents any leakage of ink from the reservoirs is created.

Abstract: ZSM-5 crystallites are produced with very low levels of blocking tetrapropyl ammonium ions (Q). The reaction mixture contains sources of silica, soda, alumina and trace amounts of Q ions as nucleation agents. Because the crystallites as synthesized from the aqueous medium exhibit only a very small fraction of blocking cations, there is always a diffusion path for the hydrated sodium ions to be exchanged without the need of prior removal of the blocking cations by calcination or otherwise. The small size crystallites can be exchanged, blended with other materials, and formed into catalyst particles. The silica to alumina ratio can be varied and when no aluminum is added, silicalite may be formed. The systhesis can be done in 24 hours or less.