CN113524918A

CN113524918A - Ink box chip, ink box and ink-jet printer

Info

Publication number: CN113524918A
Application number: CN202110694751.8A
Authority: CN
Inventors: 文冠果
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Zhuhai Tianwei Microelectronics Co ltd
Priority date: 2021-06-22
Filing date: 2021-06-22
Publication date: 2021-10-22
Anticipated expiration: 2041-06-22
Also published as: CN113524918B

Abstract

The invention provides an ink box chip, an ink box and an ink-jet printer, wherein the ink box chip comprises a substrate, a memory and a plurality of connecting terminals are arranged on the substrate, the plurality of connecting terminals comprise a plurality of first terminals electrically connected with the memory, and the plurality of connecting terminals also comprise at least one high-voltage terminal; the substrate is provided with a first energy storage device, the first energy storage device supplies power to the memory through a first switch device, and the first switch device is controlled to be switched on and switched off by a second switch device; the substrate is also provided with a high-voltage driving circuit, and the high-voltage driving circuit receives a high-voltage signal from at least one high-voltage terminal and supplies power to the memory. The side wall of the box body of the ink box is provided with the ink box chip, and the ink box can be installed on the ink-jet printer. The invention can avoid the damage of the memory caused by bearing overhigh voltage, can also avoid the condition that the memory cannot work due to the abnormal work of the storage battery, and ensures the normal power supply of the memory.

Description

Ink box chip, ink box and ink-jet printer

Technical Field

The invention relates to the field of printing consumables, in particular to an ink box chip, an ink box with the ink box chip and an ink-jet printer.

Background

The electronic imaging equipment is taken as common office equipment, great convenience is provided for modern office, the common electronic imaging equipment comprises a printer, a copying machine and the like, the existing printer is divided into an ink-jet printer and a laser printer, and the ink-jet printer uses an ink box containing ink as an ink box to jet the ink to paper so as to form characters or patterns to be printed on the paper; the laser printer uses a toner cartridge containing toner as an ink cartridge to form characters or patterns to be printed on a medium.

Referring to fig. 1, a conventional color inkjet printer has a cabinet 11, and the inkjet printer shown in fig. 1 omits a tray of the cabinet 11. The casing 11 is provided with a movement 12 of the ink jet printer and with a slide along which a carriage 14 is driven by a motor (not visible in fig. 1). An adapter plate (not visible in fig. 1) is provided in the carriage 14, and communicates with the movement 12 via the flat cable 13.

A plurality of ink cartridges 15 are detachably mounted on the carriage 14, and different ink cartridges 15 contain different color inks. The structure of the ink cartridge 15 is shown in fig. 2. The ink cartridge 15 has a cartridge body 16, the cartridge body 16 encloses a cavity for accommodating ink, an ink outlet 17 is provided at a lower end of the cavity, and the ink in the cavity flows out through the ink outlet 17 and supplies ink to an ink supply needle of the printing carriage 14.

A chip 18 is mounted on the outer wall of the casing 16 of the cartridge 15, the chip 18 having a substrate with a plurality of connection terminals 19 on one side for electrical connection with the adapter plate. The other side of the substrate is provided with a memory (not visible in fig. 2), which is usually a non-volatile memory, such as an EEPROM or a FLASH, and stores information related to the ink cartridge, including variable information and invariable information, where the variable information is information that is constantly changed with the printing operation, such as information about the remaining amount of ink, the printing duration, the number of printed sheets, and the invariable information is information that is not changed with the printing operation, such as the type of the ink cartridge, the type of an applicable inkjet printer, and the color of ink.

After the ink cartridge 15 is mounted to the carriage 14 of the ink jet printer, the ink jet printer powers up the chip 18 and reads the data stored in the memory of the chip 18 to determine whether the ink cartridge 15 is of the proper type, whether the amount of ink remaining in the ink cartridge 15 is sufficient, and the like. The ink jet printer can perform the printing operation only after the ink cartridge 15 is judged to be of a proper type and the ink cartridge 15 contains sufficient ink.

Referring to fig. 3, a conventional chip 18 has 9 connection terminals provided on one surface of a substrate 20, and a plurality of connection terminals are arranged in two upper and lower rows, wherein a first row located above includes four connection terminals, respectively,

connection terminals

21, 22, 23, 24, and a second row located below includes five connection terminals, respectively,

connection terminals

25, 26, 27, 28, 29. These connection terminals are divided into three groups, the first group of connection terminals being the connection terminals electrically connected to the memory, usually located in the middle of each row of connection terminals, for example,

connection terminals

22, 23, 26, 27, 28 are the connection terminals for connection to the memory, where connection terminal 26 is the power terminal and connection terminal 27 is the ground terminal. The two

connection terminals

21, 24 at the two ends of the first row are detection terminals, and the two connection terminals at the two ends of the second row are

high voltage terminals

25, 29.

The

detection terminals

21, 24 may have a plurality of functions, the first function being to detect whether the ink cartridge 15 is mounted in place, and if the

detection terminals

21, 24 are electrically connected to the corresponding connection terminals on the ink jet printer side, it can be considered that the ink cartridge has been mounted in place. The second function is to identify the capacity of the ink cartridge, for example, the

detection terminals

21 and 24 may be connected to the power supply terminal and the ground terminal differently, and the ink jet printer determines the model of the ink cartridge 15 by detecting the levels of the

detection terminals

21 and 24, so as to know the capacity information of the ink cartridge 15.

The ink cartridge 15 may be provided with a sensor for detecting the remaining amount of ink, but the sensor needs to be applied with a high voltage when operating, and therefore, the

high voltage terminals

25 and 29 are used for receiving a high voltage pulse signal provided by the inkjet printer and are applied to both ends of the sensor. However, if an ink droplet is dropped between the plurality of connection terminals, a short circuit occurs between the plurality of connection terminals, for example, the ink droplet is dropped between the

connection terminals

21, 25, 26, and once the high voltage terminal 25 is applied with a higher voltage, the voltage at the connection terminal 26 is also higher. If the connection terminal 26 is a connection terminal for supplying power to the memory, also called a power supply terminal, since the operating voltage of the memory is usually about 3.3 volts, if the connection terminal 26 is applied with a higher voltage, the memory will burn out, and even the operation of the inkjet printer will be affected.

Therefore, a detection circuit is arranged in the movement of the ink-jet printer, the voltage of the

detection terminals

21 and 24 is detected to judge whether abnormal phenomena occur or not, for example, ink drops drop between the

connection terminals

21, 25 and 26, when the high-voltage terminal 25 is loaded with high direct-current voltage, the voltage of the detection terminal 21 is increased, and once the ink-jet printer detects that the voltage of the detection terminal 21 is overhigh, the high-voltage direct current is disconnected from being loaded to the high-voltage terminal 25, so that the damage to a memory caused by the high voltage of the connection terminal 26 is avoided.

However, since the detection circuit is disposed in the housing of the inkjet printer, the inkjet printer can determine the level of the detection terminal 21 and then disconnect the power supply to the high voltage terminal 25 after the electrical signal of the detection terminal 21 needs to be transmitted to the inkjet printer. In general, it often takes several milliseconds from the detection of an excessively high level of the detection terminal 21 to the disconnection of the power supply to the high voltage terminal 25, possibly resulting in memory damage. In addition, if the detection terminal 21 is abnormal or the detection circuit is abnormal and is not detected in time when the high voltage terminal 25 and the connection terminal 26 are short-circuited, the memory is easily loaded with an excessively high voltage for a long time, which may cause memory damage.

In order to solve the above-mentioned technical problem, another ink cartridge chip is known which uses a battery to supply power to a memory, and is provided with a plurality of connection terminals on one surface of a substrate 40, the plurality of connection terminals being arranged in two rows, wherein a first row located above includes four connection terminals, respectively

connection terminals

41, 42, 43, 44, and a second row located below also includes four connection terminals, respectively

connection terminals

45, 47, 48, 49, as shown in fig. 4. Referring to fig. 5, a memory 50 is provided on the other surface of the substrate 40.

Since the ink jet printer needs to load a high voltage signal to the

high voltage terminals

45, 49 for a short time before reading data from the memory 50 or writing data into the memory 50, the existing ink cartridge chip uses the high voltage signal loaded for a short time to control the power supply of the memory 50.

Referring to fig. 5, the memory 50 is powered by a battery, the cartridge chip controls the discharge of the battery through the fet T1, the fet T1 is a high-level conducting fet, the drain of which is connected to the battery, the source of which is connected to the memory 50, and the gate of which is connected to the fet T2. The fet T2 is a low-level turn-on device, and its drain is connected to the gate of the fet T1. In addition, the drain of the fet T2 is also connected to a resistor R2. The source of the fet T2 is connected to the capacitor C4, and when the fet T2 is turned on, the capacitor C4 can discharge to the resistor R2.

The gate of the fet T2 is connected to the capacitor C3 and the resistor R1, a diode D1 is connected between the capacitor C3 and the capacitor C4, the anode of the diode D1 is connected to the capacitor C3, and the cathode of the diode D1 is connected to the capacitor C4. The high voltage terminal 45 may supply power to the capacitor C3 through a diode D2, an anode terminal of the diode D2 is connected to the high voltage terminal 45, a cathode terminal is connected to one end of a resistor R3, and the other end of the resistor R3 is connected to a resistor R1.

The existing ink box chip utilizes the high voltage signal received by the high voltage terminal 45 in a short time and leads the field effect transistor T1 to be conducted in a short time after the high voltage signal disappears, so that the storage battery supplies power to the memory 50 through the field effect transistor T1 in a short time. When the high voltage terminal 45 is applied with a high voltage signal for a long time, the fet T1 is turned off, thereby preventing the memory 50 from being damaged due to an excessively high voltage. In addition, since the power used by the memory 50 is supplied by the secondary battery, it is not necessary to provide a power supply terminal on the substrate 40 for receiving the dc voltage output from the inkjet printer and directly supplying the power to the memory 50, and thus there is a problem that the memory 50 is damaged due to the power supply terminal being applied with an excessively high voltage.

However, since the chip of the ink cartridge needs to be powered by the storage battery, the storage battery is usually installed in a storage battery box, but the storage battery is easy to fall off from the box or has poor contact with the electrical contact of the storage battery due to the fact that vibration is easy to occur in the transportation and installation processes of the ink cartridge, so that the storage battery cannot supply power to the memory 50, or the storage battery 50 cannot supply power well, so that the normal operation of the ink cartridge and even the ink jet printer is affected.

Disclosure of Invention

The first purpose of the invention is to provide a cartridge chip which can effectively prevent the memory from being loaded with excessive voltage and ensure the power supply of the memory.

The second purpose of the invention is to provide an ink box applying the ink box chip.

A third object of the present invention is to provide an ink jet printer having the above ink cartridge.

In order to achieve the first object of the present invention, the ink cartridge chip provided by the present invention comprises a substrate, a memory and a plurality of connection terminals are disposed on the substrate, the plurality of connection terminals comprise a plurality of first terminals electrically connected to the memory, and the plurality of connection terminals further comprise at least one high voltage terminal; the substrate is provided with a first energy storage device, the first energy storage device supplies power to the memory through a first switch device, and the first switch device is controlled to be switched on and switched off by a second switch device; the substrate is also provided with a high-voltage driving circuit, and the high-voltage driving circuit receives a high-voltage signal from at least one high-voltage terminal and supplies power to the memory.

According to the scheme, the first energy storage device supplies power to the memory, the second switching device is conducted within a period of time after the high-voltage terminal outputs the high-voltage signal and converts the high-voltage signal into the low-level signal, and therefore the first switching device is controlled to be conducted, and the first energy storage device supplies power to the memory. On the one hand, when the high-voltage terminal is in a high-level state for a long time or is in a low-level state for a long time, the second switch device is not conducted, so that the first energy storage device cannot supply power to the memory, and the electric quantity of the first energy storage device is prevented from being consumed rapidly. Furthermore, since the memory is not supplied with power from the first connection terminal, even if the first connection terminal is applied with a higher voltage, no damage to the memory is caused.

On the other hand, because the substrate is also provided with the high-voltage driving circuit, and the high-voltage driving circuit receives the high-voltage signal output by the high-voltage terminal and supplies power to the memory, once the first energy storage device cannot supply power to the memory, the high-voltage driving circuit supplies power to the memory, and therefore the memory can still work normally when the first energy storage device cannot supply power normally.

Preferably, the high voltage driving circuit includes a resistor connected between the high voltage terminal and the memory.

Therefore, after the voltage received by the high-voltage terminal passes through the resistor, the voltage is adjusted, so that the voltage loaded to the memory is the rated working voltage of the memory, and the normal work of the memory is ensured.

The high-voltage driving circuit further comprises a second energy storage device, and one end of the second energy storage device is connected with the resistor. Preferably, the second energy storage device is a capacitor.

Therefore, the high-voltage driving circuit can still supply power to the memory within a period of time when the high-voltage signal disappears through the energy storage function of the second energy storage device, and the memory can be ensured to keep stable work within a period of time. In addition, the capacitor has the functions of filtering and stabilizing voltage, and can also ensure the voltage loaded to the memory to be stable.

The high-voltage driving circuit further comprises a first diode, wherein the anode end of the first diode is connected to the resistor, and the cathode end of the first diode is connected to the memory.

Therefore, the first energy storage device can be prevented from outputting voltage to the high-voltage terminal through the unidirectional conduction performance of the first diode, the first energy storage device is also prevented from supplying power to the second energy storage device, and the first energy storage device is ensured to only supply power to the memory.

In a further aspect, the second switching device is connected between the third energy storage device and the control terminal of the first switching device, and the control terminal of the second switching device is connected to the fourth energy storage device.

Therefore, the voltage of the third energy storage device and the voltage of the fourth energy storage device are changed through the charging and discharging relation between the fourth energy storage device and the third energy storage device, the on-off state of the second switch device is changed, and the on-off time of the second switch device can be controlled.

In a further aspect, a second diode is connected between the fourth energy storage device and the third energy storage device, an anode terminal of the second diode is connected to the fourth energy storage device, and a cathode terminal of the second diode is connected to the third energy storage device.

Therefore, the current can be prevented from flowing to the fourth energy storage device from the third energy storage device through the second diode, the current can only flow in a single direction, and the control requirement of the second switching device is met.

The invention provides another ink box chip, which comprises a substrate, wherein a memory and a plurality of connecting terminals are arranged on the substrate, the plurality of connecting terminals comprise a plurality of first terminals electrically connected with the memory, and the plurality of connecting terminals also comprise at least one high-voltage terminal; the high-voltage driving circuit receives a high-voltage signal output by the high-voltage terminal and supplies power to the memory, wherein the high-voltage driving circuit supplies power to the memory through the first switching element, and the first switching element is controlled to be switched on and switched off by the second switching element.

According to the scheme, on one hand, the high-voltage driving circuit receives the high-voltage signal output by the high-voltage terminal and supplies power to the memory, the memory does not need to use a battery to supply power to the memory, and the problem that the memory cannot work due to poor contact between the battery and the memory is solved. On the other hand, the high-voltage driving circuit does not directly supply power to the memory, but supplies power to the memory through the first switching device, when the high-voltage terminal outputs a high-voltage signal and converts the high-voltage signal into a low-level signal, the second switching device is conducted, so that the first switching device is also conducted, the high-voltage driving circuit can supply power to the memory, namely when the high-voltage driving circuit supplies power to the memory, the high-voltage driving circuit does not receive the high-voltage signal, the high-voltage signal cannot be directly loaded on the memory, and the memory is prevented from being damaged.

In order to achieve the second object, the ink cartridge provided by the invention comprises a cartridge body, wherein the cartridge body encloses a containing cavity, and the outer wall of the cartridge body is provided with the ink cartridge chip.

In order to achieve the third objective, the present invention provides an ink jet printer including a housing, wherein the ink cartridge is installed in the housing.

Drawings

Fig. 1 is a structural view of a conventional ink jet printer.

Fig. 2 is a structural view of a conventional ink cartridge.

Fig. 3 is a structural view of a conventional ink cartridge chip.

Fig. 4 is a structural view of another conventional ink cartridge chip.

Fig. 5 is an electrical schematic of a prior art cartridge chip embodiment.

Fig. 6 is a structural view of a first embodiment of the chip of the ink cartridge of the present invention.

FIG. 7 is an electrical schematic of a first embodiment of the cartridge chip of the present invention.

FIG. 8 is an electrical schematic of a second embodiment of the chip of the cartridge of the present invention.

The invention is further explained with reference to the drawings and the embodiments.

Detailed Description

The ink cartridge of the present invention is an ink cartridge to be mounted on an ink jet printer, and the present invention will be described in detail with reference to examples.

Ink cartridge chip first embodiment:

the ink cartridge chip of the present embodiment is an ink cartridge chip mounted on an ink cartridge for an ink jet printer, and as shown in fig. 6, the ink cartridge chip has a substrate 60, one surface of the substrate 60 is provided with a plurality of connection terminals, which are arranged in two rows, wherein the first row located above includes four connection terminals, which are

connection terminals

61, 62, 63, 64, respectively, and the second row located below also includes four connection terminals, which are connection terminals 65, 67, 68, 69, respectively. Referring to fig. 7, a memory 70 is provided on the other surface of the substrate 60, and the memory 70 is a nonvolatile memory such as an EFFROM or FLASH.

In the present embodiment, the plurality of connection terminals on the substrate 60 are divided into three groups, the first group of connection terminals are the

first connection terminals

62, 63, 67, 68, the first connection terminals include the chip select terminal CS, the clock terminal CLK, the ground terminal GND, the data terminal DAT, and the like, and the first connection terminals are electrically connected to the memory 70. As can be seen from fig. 6, these connection terminals are located at the middle of each row of connection terminals. In the present embodiment, the four first terminals do not include a power supply terminal for receiving a dc voltage output from the inkjet printer and directly supplying power to the memory 70.

The second group of connection terminals are two

connection terminals

61, 64 at both ends of the first row, the

connection terminals

61, 64 are detection terminals, and the third group of connection terminals are two connection terminals 65, 69 at both ends of the second row, and these two connection terminals are high voltage terminals.

A device having a high operating voltage, for example, a sensor for detecting the remaining amount of ink, such as a piezoelectric sensor, is provided in the ink cartridge, and high-voltage terminals 65, 69 are connected to both ends of the sensor, respectively. When the ink jet printer needs to detect the ink residual quantity, high-voltage pulse signals are loaded to the high-voltage terminals 65 and 69 so that the piezoelectric sensor generates oscillation signals. However, since the operation of detecting the remaining amount of ink is not performed in real time, and is usually performed before the start of one printing operation or after the completion of the printing operation, the high-voltage terminals 65 and 69 are not applied with a high-voltage pulse signal in real time, but are applied with a high-voltage pulse signal at a specific timing. In general, the maximum voltage of the high-voltage pulse signal applied to the high-voltage terminals 65 and 69 by the inkjet printer can be usually 25 volts or more, and therefore, the high-voltage terminals 65 and 69 receive the high-voltage signal output from the inkjet printer.

In addition, since the inkjet printer often needs to load a high-voltage signal, for example, a high-voltage pulse signal of 25V or more, to the high-voltage terminals 65 and 69 for a short time before data of the memory 70 needs to be read or data needs to be written into the memory 70, the present embodiment can control the power supply of the memory 70 by using the high-voltage pulse signal loaded for a short time.

Referring to fig. 7, the storage battery as the first energy storage device of the present embodiment supplies power to the memory 70, and preferably, the storage battery is a non-chargeable storage battery, that is, the storage battery cannot be charged after being packaged in a cartridge chip and only can be discharged. Because the area of the ink box chip is very small, the space for installing the ink box chip on the ink box is also very small, and a storage battery with a larger volume cannot be arranged on the ink box chip, the electric energy stored by the storage battery is limited, and the discharging time of the storage battery needs to be strictly controlled.

In this embodiment, the discharging of the battery is controlled by the fet T11 as the first switching device, the fet T11 is a high-level conducting fet, the drain of which is connected to the battery, the source of which is connected to the memory 70, and the gate of which is connected to the fet T12 as the control terminal. The fet T12, which is the second switching device of the present embodiment, is a low-level conduction device, and the drain of the fet T12 is connected to the gate of the fet T11. In addition, the drain of the fet T12 is also connected to a resistor R13.

The source of the fet T12 is connected to the capacitor C13, in this embodiment, the capacitor C13 is a third energy storage device, the resistor R13 is an energy consuming device, and when the fet T12 is turned on, the capacitor C13 can discharge to the resistor R13.

The gate of the fet T12 is connected to the capacitor C14 as a fourth energy storage device and the resistor R12 as an energy consuming device, and a diode D12 as a second diode is connected between the capacitor C13 and the capacitor C14, the anode of the diode D12 is connected to the capacitor C14, and the cathode of the diode D12 is connected to the capacitor C13.

In addition, the high voltage terminal 65 may supply power to the capacitor C14 through a diode D13 as a third diode, an anode terminal of the diode D13 is connected to the high voltage terminal 65, a cathode terminal is connected to one end of a resistor R14, and the other end of the resistor R14 is connected to a resistor R12.

In addition, the present embodiment further provides a high voltage driving circuit, the high voltage driving circuit includes a resistor R11, a capacitor C12 as a second energy storage device, and a diode D11 as a first diode, the high voltage terminal 65 charges the capacitor C12 through the resistor R11, an anode terminal of the diode D11 is connected to the resistor R11, and a cathode terminal supplies power to the memory 70. Thus, when the high voltage terminal 65 receives the high voltage signal, the capacitor C12 is charged through the resistor R11, and the memory 70 is supplied with power through the diode D11.

By setting the resistor R11 with an appropriate resistance value, the voltage applied to the memory 70 can be a rated operating voltage, and the memory 70 is prevented from being damaged due to an excessively high voltage. On the other hand, the capacitor C12 has the functions of energy storage, filtering and voltage stabilization, so that the voltage loaded to the memory 70 is prevented from generating spikes or transient changes.

When the inkjet printer does not apply the high voltage signal to the high voltage terminal 65, the high voltage terminal 65 outputs a low level signal, i.e., the diode D13 is not conductive, and at this time, the point a1 is a low level signal, and the fet T12 is in a conductive state. However, since the capacitor C14 and the capacitor C13 are not charged, the signal at the point B1 is also a low level signal, the capacitor C13 cannot discharge to the resistor R13, the signal at the point C1 is also a low level signal, the fet T11 is in an off state, and the battery cannot supply power to the memory 70. Also, since the diode D11 is also not conducting, the high voltage drive circuit does not supply power to the memory 70.

When the inkjet printer applies a high voltage signal to the high voltage terminal 65, for example, the inkjet printer applies a high voltage signal to the high voltage terminal 65 for a long period of time, the dc voltage of the high voltage terminal 65 passes through the diode D13 and the resistor R14 and then charges the capacitor C14, at this time, the point a1 is a high level signal, and the gate of the fet T12 is at a high level and is in an off state. Since point a1 is high, current will flow through diode D12 and charge capacitor C13. However, since the fet T12 is in the off state, the current cannot flow to the resistor R13 through the fet T12, the point C1 is still in the low level state, the signal received by the gate of the fet T11 is a low level signal, the fet T11 is still off, and the battery cannot supply power to the memory 70.

At the same time, the high voltage terminal 65 charges the capacitor C12 through the resistor R11, and the voltage applied to the memory 70 slowly rises because the voltage of the capacitor C12 cannot abruptly change. Also, due to the presence of resistor R11, the voltage applied to memory 70 is not too high, causing damage to memory 70.

Before the ink jet printer needs to write data into the memory 70 or read data from the memory 70, the ink jet printer applies a high voltage signal to the high voltage terminal 65 for a short time and immediately after applying the high voltage signal, the high voltage signal is often only several tens of milliseconds to several hundreds of milliseconds in duration.

After the high voltage terminal 65 is applied with the high voltage signal, the capacitor C14 starts to charge, but the capacitor C13 charges very little power due to the short duration of the high voltage, and therefore, the B1 point is still in the low state. In the time period when the high voltage terminal 65 is applied with the high voltage signal, the point a1 is a high level signal, the fet T12 is turned off, the gate of the fet T11 is also a low level signal and is turned off, and the battery cannot discharge to the memory 70.

When the level signal output from the high voltage terminal 65 is converted into the low level signal for a while, the point a1 keeps the high level for a while because the capacitor C14 is continuously discharged, at this time, the capacitor C14 is discharged through the resistor R12, and the current of the capacitor C14 can be charged to the capacitor C13 through the diode D12. Since the fet T12 remains in the off state, the capacitor C13 does not discharge, and thus the voltage drop at the B1 point gradually rises. As the capacitor C14 continues to discharge, the voltage at point a1 will gradually decrease, and when the voltage at point a1 is lower than the voltage at point B1 (or the voltage at point a1 decreases to a low level state), the fet T12 is turned on, the capacitor C13 discharges to the resistor R13 through the fet T12, at this time, a voltage is formed across the resistor R13, the voltage at point C1 is a high level signal, the fet T11 is turned on, and the battery supplies power to the memory 70.

Because the amount of electricity stored in the capacitor C13 is limited, the capacitor C13 will be discharged after a period of time, and the high level state at the point C1 can only be maintained for a short time, for example, only one or two seconds, so the on-time of the fet T11 can only be maintained for a short time. Since the communication between the ink jet printer and the memory 70 is often completed in a very short time, the on time of the fet T11 can meet the requirement of the ink jet printer to read data from and write data to the memory 70.

After the capacitor C13 finishes discharging, the point C1 becomes a low level signal, the fet T11 returns to the cut-off state again, and the storage battery cannot supply power to the memory 70, so that the situation that the storage battery supplies power to the memory 70 for a long time to cause the power of the storage battery to be consumed too quickly is avoided, and the power of the storage battery can be maintained for a long time. The time for discharging the storage battery to the storage 70 each time depends on the discharge time of the capacitor C13, so that the capacitor C13 with a proper capacity can be set according to actual requirements to meet the requirement for discharging the storage battery to the storage 70.

Similarly, when the high voltage terminal 65 receives the high voltage signal for a short time, the high voltage driving circuit supplies power to the memory 70 for a short time, so as to ensure the operation of the memory 70.

It can be seen that if the high voltage terminal 65 is in the low level state for a long time or in the high level state for a long time, the fet T11 is turned off, and only in the very short time when the high voltage terminal is converted into the low level after being loaded with the high level, the fet T11 is turned on, and the battery supplies power to the memory 70, so that the electric quantity of the battery is prevented from being consumed too quickly, and the ink cartridge chip can be used for a long time.

Since the condition that the memory 70 receives power is that the high voltage terminal 65 receives the high voltage signal in the present embodiment, the memory 70 can be understood as a device that is driven to operate when the inkjet printer outputs the high voltage signal to the high voltage terminal 65, that is, the operation of the memory 70 is realized based on the high voltage signal.

In addition, the memory 70 of the embodiment adopts two different power supply modes, so that even if the storage battery cannot supply power to the memory 70 due to looseness of a storage battery clamping box of the storage battery, the high-voltage driving circuit can be used for supplying power additionally, stable power supply of the memory 70 can be ensured, and normal operation of the memory 70 can be ensured.

Cartridge chip second embodiment:

the ink cartridge chip of this embodiment has a base plate, and the one side of base plate is equipped with a plurality of connecting terminals, and a plurality of connecting terminals are arranged into two lines, including four first connecting terminal, two detection terminal and two high voltage terminal that are connected with the memory, and a plurality of connecting terminals's arrangement is the same with first embodiment, no longer explains.

Referring to fig. 8, the present embodiment is provided with a high voltage driving circuit including a resistor R21, a capacitor C21, and a diode D21, the high voltage terminal 65 charges the capacitor C21 through the resistor R21, an anode terminal of the diode D21 is connected to the resistor R21, and a cathode terminal supplies power to the memory 70. Thus, when the high voltage terminal 65 receives a high voltage signal, the capacitor C21 is charged through the resistor R21, and the high voltage driving circuit supplies power to the memory 70 through the fet T21 of the first switching device.

The fet T21 is a high-level conducting fet, and has a drain connected to the cathode of the diode D21, a source connected to the memory 70, and a gate as a control terminal connected to the fet T22. The fet T22, which is the second switching device of the present embodiment, is a low-level conduction device, and the drain of the fet T22 is connected to the gate of the fet T21. In addition, the drain of the fet T22 is also connected to a resistor R23.

The source of the fet T22 is connected to the capacitor C23, and when the fet T22 is turned on, the capacitor C23 can discharge to the resistor R23. The gate of the fet T22 is connected to the capacitor C24 and the resistor R22, and a diode D22 is connected between the capacitor C23 and the capacitor C24, the anode of the diode D22 is connected to the capacitor C24, and the cathode of the diode D22 is connected to the capacitor C23.

In addition, the high voltage terminal 65 may supply power to the capacitor C24 through a diode D23, an anode terminal of the diode D23 is connected to the high voltage terminal 65, a cathode terminal is connected to one end of a resistor R24, and the other end of the resistor R24 is connected to a resistor R22.

When the inkjet printer does not apply the high voltage signal to the high voltage terminal 65, the high voltage terminal 65 outputs a low level signal, i.e., the diode D23 is not conductive, and at this time, the point a2 is a low level signal, and the fet T22 is in a conductive state. However, since the capacitor C24 and the capacitor C23 are not charged, the signal at the point B2 is also a low level signal, the capacitor C23 cannot discharge to the resistor R23, the signal at the point C2 is also a low level signal, the fet T21 is in an off state, and the high voltage driver circuit cannot supply power to the memory 70. In addition, diode D21 is also non-conductive.

When the inkjet printer applies a high voltage signal to the high voltage terminal 65, for example, the inkjet printer applies a high voltage signal to the high voltage terminal 65 for a long period of time, the dc voltage of the high voltage terminal 65 passes through the diode D23 and the resistor R24 and then charges the capacitor C24, at this time, the point a2 is a high level signal, and the gate of the fet T22 is at a high level and is in an off state. Since point a2 is high, current will flow through diode D22 and charge capacitor C23. However, since the fet T22 is in the off state, the current cannot flow to the resistor R23 through the fet T22, the point C2 is still in the low level state, the signal received by the gate of the fet T21 is a low level signal, the fet T21 is still off, and the high voltage driving circuit cannot supply power to the memory 70.

After the high voltage terminal 65 is applied with the high voltage signal, the capacitor C24 starts to charge, but the capacitor C23 charges very little power due to the short duration of the high voltage, and therefore, the B2 point is still in the low state. In the period when the high voltage terminal 65 is applied with the high voltage signal, the point a2 is a high level signal, the fet T22 is turned off, the gate of the fet T21 is also a low level signal and is turned off, and the high voltage driving circuit cannot discharge to the memory 70. In addition, capacitor C21 charges after a brief application of the high voltage signal at high voltage terminal 65. However, since fet T21 is in the off state, capacitor C21 does not discharge into memory 70.

When the level signal output from the high voltage terminal 65 is converted into the low level signal for a while, the point a2 keeps the high level for a while because the capacitor C24 is continuously discharged, at this time, the capacitor C24 is discharged through the resistor R22, and the current of the capacitor C24 can be charged to the capacitor C23 through the diode D22. Since the fet T22 remains in the off state, the capacitor C23 does not discharge, and thus the voltage drop at the B2 point gradually rises. As the capacitor C24 continues to discharge, the voltage at point a2 will gradually decrease, when the voltage at point a2 is lower than the voltage at point B2, the fet T22 is turned on, the capacitor C23 discharges to the resistor R23 through the fet T22, at this time, a voltage is formed across the resistor R23, the signal at point C2 is high, the fet T21 is turned on, and the high-voltage driving circuit supplies power to the memory 70, i.e., the power stored in the capacitor C21 is used to supply power to the memory 70.

Since the communication between the ink jet printer and the memory 70 is often completed in a very short time, the on time of the fet T21 can meet the requirement of the ink jet printer to read data from and write data to the memory 70. When the capacitor C23 is discharged, the low level signal is generated at the point C2, the fet T21 is turned back to the off state again, and the high voltage driving circuit cannot supply power to the memory 70.

It can be seen that, in the embodiment, the accumulator 70 does not need to be powered by the battery, and the electric energy needed by the accumulator 70 completely comes from the high-voltage signal received by the high-voltage terminal 65, so that the problem that the accumulator 70 cannot normally operate because the accumulator cannot be powered to the accumulator 70 does not exist, and the accumulator does not need to be arranged on the ink cartridge chip, so that the production cost is lower. In addition, since the power used by the memory 70 is completely from the high voltage signal received by the high voltage terminal 65, the memory 70 can be understood as a device that is driven to operate when the inkjet printer outputs the high voltage signal to the high voltage terminal 65, that is, the operation of the memory 70 is realized based on the high voltage signal, and a low voltage power supply does not need to be arranged on the ink cartridge chip.

In addition, when the high-voltage terminal 65 receives a high-voltage signal for a long time, the fet T21 is turned off, so that the memory 70 can be prevented from being damaged by receiving an excessively high voltage.

Ink cartridge example:

the embodiment has a casing, and the casing encloses into a cavity that holds the ink, is equipped with the ink outlet with the cavity intercommunication in the below of cavity, and the ink accessible in the cavity flows out through the ink outlet. And, a cartridge chip according to the above-described embodiment of the present invention is detachably mounted on one outer wall of the case.

Inkjet printer example:

the ink jet printer of this embodiment is provided with a body in which a housing chamber for housing the ink cartridge is formed.

Finally, it should be emphasized that the present invention is not limited to the above-described embodiments, the switching device used is not necessarily a field effect transistor, and a triode may be used instead of the field effect transistor, and these modifications are also included in the scope of the claims of the present invention.

Claims

1. An ink cartridge chip comprising:

the circuit board comprises a substrate, a memory and a plurality of connecting terminals, wherein the substrate is provided with the memory and the connecting terminals comprise a plurality of first terminals electrically connected with the memory, and the connecting terminals also comprise at least one high-voltage terminal;

a first energy storage device is arranged on the substrate, the first energy storage device supplies power to the memory through a first switch device, and the first switch device is controlled to be switched on and switched off by a second switch device;

the method is characterized in that:

the substrate is further provided with a high-voltage driving circuit, and the high-voltage driving circuit receives a high-voltage signal from at least one high-voltage terminal and supplies power to the memory.

2. The cartridge chip of claim 1 wherein:

the high voltage drive circuit includes a resistor connected between the high voltage terminal and the memory.

3. The cartridge chip of claim 2 wherein:

4. The cartridge chip of claim 3 wherein:

the high-voltage driving circuit further comprises a second energy storage device, and one end of the second energy storage device is connected with the resistor and the anode end of the first diode.

5. The cartridge chip according to any one of claims 1 to 4 wherein:

the second switching device is connected between the third energy storage device and the control end of the first switching device, and the control end of the second switching device is connected with the fourth energy storage device.

6. The cartridge chip of claim 5 wherein:

and a second diode is connected between the fourth energy storage device and the third energy storage device, the anode end of the second diode is connected to the fourth energy storage device, and the cathode end of the second diode is connected to the third energy storage device.

7. An ink cartridge chip comprising:

the method is characterized in that:

the high-voltage driving circuit receives a high-voltage signal from at least one high-voltage terminal and supplies power to the memory, wherein the high-voltage driving circuit supplies power to the memory through a first switching device, and the first switching device is controlled to be switched on and switched off by a second switching device.

8. The cartridge chip of claim 7 wherein:

9. An ink cartridge, comprising:

the box body is enclosed into an accommodating cavity;

the method is characterized in that:

the cartridge chip according to any one of claims 1 to 8 is provided on an outer wall of the cartridge body.

10. An ink jet printer comprising a housing, wherein the ink cartridge of claim 9 is mounted in the housing.