TW510859B - Resistant identification apparatus of printhead - Google Patents

Abstract

The present invention relates a resistant apparatus applied to identifying a printhead with a certain printer. The apparatus of the present invention primarily includes a plurality of identification units. Each of the identification units further includes a transistor, a first resistor and a second resistor. By adjusting the first resistor and the second resistor, the apparatus can generate numerous identification types without changing fabrication processes.

Description

V. Description of the invention (1) h Range of invention

The present invention relates to a resistance control identification system for identifying the resistance of an inkjet head to identify whether an inkjet head is suitable for a different device. 2. Background of the invention

Thermal inkjet printer (thermal inkjet is one of the most widely used printing tools, of which the ink cartridge must be replaced frequently. However, 'the variety of inkjet printers is appropriate =: the material must be different types; therefore When the user installs an ink cartridge, the / ', water ® identification device confirms that the ink cartridge is suitable for a particular inkjet print. A first display shows a heating device 24 and an inkjet head identification and 2 water. Schematic diagram of the position on Ε90, the address signal line 23 can be connected to the printer and the main 1. The heating device 24 and an inkjet head identification device 25 are all formed on a substrate 'and made by a conventional semiconductor process —Chip. Figure 2 is a block diagram of the identification and control of a general inkjet printer and an inkjet head. The main body of the inkjet printer is provided with a main control unit 21 that can accept instructions sent by the user, and via an inkjet head The driving device 22 and the plurality of address signal lines 23 drive the heating device 24 provided on the inkjet head. When the inkjet head identification device 25 receives the voltage from the plurality of address signal lines 23, it passes an analog / digital Conversion device 2 6 converts to digital data and confirms Set 2 7 for comparison. If the comparison result does not match, stop operation; otherwise, the heating unit 24 can raise or lower the voltage of a specific address control terminal according to the instruction to drive the resistance heater connected to the address control terminal. Generates thermal energy and heats the ink to form a bubble ejection.

Page 5 Fifth, the description of the invention Yuan 2 5 knot The ink jet master 2 3 are connected and disconnected, respectively. However, the availability of traceable production is essential. Some people think about how to study and install the device. "(2) The talents, the example driving list can confirm 'the process of this kind of knowledge and here, without the need to test, finally provide guidance such as US dollars 2 2 and design. Recognize the ink recognition equipment and sell it in different forms. The present invention is made in the completed industry and disclosed in Patent No. 5, 363, 1 34, which is each address signal line or melting wire between the heating unit 2 and 4 by Whether the lead box or fuse lead-through box 90 is suitable for a particular inkjet printing device is limited by the number of address terminals due to only two input and output states of the wire or fuse. In order to improve the above-mentioned shortcomings, in order to produce countless identification patterns, people must be engaged in related work for many years. Under the conditions of the process, the above-mentioned "the resistance control of the inkjet head is a better choice for the user." 3 · Summary of the invention The device of the present invention has the advantages of a variety of identification modes. In order to achieve the upper system, it is formed in half of the control unit accessible devices and a plurality of devices. The composition of the spray element of the present invention 'each purpose is to not affect and not cause For the stated purpose, the conductive substrate is subject to the user's address signal, and the electronic identification sheet is provided for the resistance control of an inkjet head to identify the state of being equipped with a process program, which can provide numerous problems of repeated identification codes. The inkjet head of the present invention Resistance identification device, and the main body of the inkjet printer is provided with a main sending instruction, and the ink heating resistance control identification device provided on the inkjet head is driven by an inkjet head driving line, which is composed of a plurality of identification units. Including a transistor with a current

Page 6 V. Description of the invention (3) The input terminal is connected to a Thunder & ground control terminal, and a current output terminal is connected to-connected to-the corresponding address signal line to control two other voltages = Connected to-The second resistor preset identification circuit electric voltage control terminal. Based on this, the appearance is identified by *. $ ^ ㈣ The resistance value of the two resistors can be obtained in a variety of ways: (1) The first Λ—the input and output states of the identifier are both of the following: the driving crystal is connected across the third resistor, and the voltage drop is insufficient if the resistance is low. When the first resistance voltage drop is sufficient to drive the transistor, the voltage of the output junction is controlled one by one: the current / voltage control terminal of each terminal is connected with a resistor 'or at least one transistor is connected to Ground control terminal. 4 · # Detailed description of the specific embodiment of the father: Refer to FIG. 3 ′, which is a circuit diagram of the first embodiment of the resistance control identification device of the inkjet head of the present invention, which is formed on a semiconductor substrate. In the inkjet head, the resistance control identification device is composed of a plurality of identification units, and each of the reduction units includes a transistor, a first resistor, and a second resistor. Take the first set of identification units in the figure as an example. Among them, n-M0s transistor n has a current input terminal connected to the analog / digital conversion device 26, and a current output source connected to a ground control terminal. And a current / voltage control terminal

510859

V. Description of the invention (4) Gate. One end of the first resistor ΪΠ 1 is connected to the corresponding address signal line 231, and the other end is connected to the gate of the transistor T1. One end of the second resistor R12 is connected to the ground control terminal Gm, and the other end is connected to the gate of the transistor T1. The transistor used in the present invention is not limited to n-MOS ~ W | ^ other MOS transistors, bipolar transistors or other forms. According to the circuit of this embodiment, by presetting the resistance values of the first resistors R1 and R91 and the second resistors R12 to R92 of the identification circuit 25 and connecting the address signal lines 23 and 239, an infinite number of identification states can be obtained. kind. Please refer to FIGS. 4A and 4B, which are partial circuit diagrams of the second embodiment of the resistance control identification device of the ink jet head of the present invention, which is a special example of the first embodiment. In this embodiment, the second resistors Rnl and Rml are the same as the second resistors R1 and R91 of the first embodiment, and the input and output states of each identification unit are one of the following: (1) As shown in FIG. 4A 'The second resistor Rn2 is a circuit with a very large resistance value, so that when the voltage drop across the second resistor Rn2 is sufficient to drive the transistor Tη, the output result is a low potential state; or (2) As shown in Figure 4β, the second The resistor Rm2 is a metal piece with extremely small resistance value, so that when the voltage drop across the second resistor 不足 is insufficient to drive the transistor Tm, the output result is too ## If it can also be generated and recognized by the conventional inkjet head, please set it ^ The potential is always set to a similar output logic configuration.

" η The second is the resistance control identification circuit diagram of the nozzle head of the present invention ', which is different from the second embodiment. Brother: Γ · 1' Ryl, without the second power " The state is as shown in the figure below. The transistor Txl's free pole is only connected to one of the following: (1) As the 5A τμμ %% i 1 connected to the-resistance m, the gate of the transistor Tx- The voltage drop at the source (Vcs) or & pole (Vbe) is sufficient to drive the voltage

V. Description of the invention (5) When the crystal Tx, the voltage drop of the gate of the transistor Ty or Vbe is not controlled by the above-mentioned second crystal reticle. It should not be used to disclose the results disclosed in the following. Low potential state; or (2) As shown in FIG. 5B, when the pole is still connected to the ground control terminal Gm so that Vm of the transistor Tx is enough to drive the transistor Ty, the output result is high. In the third embodiment, the status option of metal or multiple identification units can be used in the manufacturing process. However, the above description is only the preferred embodiments of the present invention and limits the scope of patent application for the present invention; all other equivalent changes or modifications made without departing from the spirit should fall within the scope of the patent. 510859 Brief Description of Drawings Figure 1 is a schematic diagram of the position of a general inkjet head identification device. Figure 2 is a block diagram of identification control of a general inkjet printer and an inkjet head. Fig. 3 is a circuit diagram of the first embodiment of the resistance control identification device of the ink jet head of the present invention. 4A and 4B are partial circuit diagrams of the second embodiment of the resistance control and identification device of the ink jet head according to the present invention. 5A and 5B are partial circuit diagrams of the third embodiment of the resistance control identification device of the ink jet head of the present invention. Component symbol description: 2 1 Main control unit 2 3, 2 3 1 ~ 2 3 9 Address signal line 25 Ink head identification device 27 Confirmation device 22 Ink head drive device 2 4 Heating device 26 Analog / digital conversion device 9 0 Ink cartridges #

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Claims (1)

510859 6. Application patent scope I. A resistance control identification device for inkjet head, which is used to form on a semiconductor substrate; the body of the inkjet printer is provided with a control soap element that can accept the fingers sent by users, And through an inkjet head. ° moving device and a plurality of address signal lines to drive the inkjet head, the resistance control and identification device is composed of a complex, a female identification unit includes :: M ^: ^ ^ & quot The charter plane is connected to an analog / digital = replacement device, the -current output terminal is connected to the -ground control terminal, and a negative > ^ / voltage control terminal; Di, t: the first resistor, one end of which is connected to a corresponding address signal line, and the current / voltage control terminal of the transistor; and the first resistor, of which one end is connected to a ground control terminal and the other end is also connected to The current / voltage control terminal of the transistor; accordingly, a variety of identification patterns can be obtained by presetting the resistance values of the first resistance and the second resistance of the identification circuit. 2 · As for the device in the scope of patent application, the input and output status of each identifier is one of the following: (1) The resistance value of the second resistor is extremely small, and the voltage drop across the second resistor is insufficient to drive the power. When crystal, the output result is high potential; (2) When the resistance value of the second resistor is extremely large, and the voltage drop across the second resistor is sufficient to drive the transistor, the output result is a low potential state. 3—An inkjet head resistance control identification device is used for thermal inkjet printers and formed on a semiconductor substrate; the body of the inkjet printer is equipped with a main control unit that can accept Instruction via an inkjet head Page 11 510859 VI. Applicable patent range driving device and reheating device; the inkjet number address signal line drives the ink head mounted on the inkjet head and the resistance control identification device is composed of multiple identification units, each identifying The unit includes: a transistor conversion device, a / voltage control terminal, which has a current input terminal connected to an analog / digital current output terminal connected to a ground control terminal, and a current terminal connected to the transistor and a second electrical connection Among the transistors, one end of each first resistor 'is connected to a corresponding address signal line, and the current / voltage control terminal of the other body; and the resistor, one end is connected to a ground control terminal, and the other end is also connected to current / voltage control. The input and output states of a recognizer are either of the following: (1) The resistance value of the second resistor is extremely small. If the voltage drop across the second resistor is insufficient to drive the transistor, the output result is high; (2) The second When the resistance value is extremely large, when the voltage drop across the second resistance is sufficient to drive the transistor, the output result is a low potential. 4Mainly an inkjet head resistance control identification device, which is used for thermal inkjet printing: Di and is formed on a semiconductor substrate; the inkjet printing J control unit can accept the fingers sent by the user, and An inkjet head: = set: a plurality of address signal lines drive the ink plus equipment control and identification device provided on the inkjet head is composed of a plurality of identification units, and the parent identification element includes: conversion: Ϊ 晶 雷 ίϋ 1 The current input terminal is connected to-analog / digital conversion device-the electrical output terminal is connected to-ground control #, and a power Page 12 510859 VI. Patent application current / voltage control terminal; and a first resistor, one end of which is connected to a corresponding address signal line 'and the other end is connected to the current / voltage control terminal of the transistor. 5. The device of claim 4 in which the current / voltage control terminal of the transistor of at least one identification unit is connected to the ground control terminal. Page 13