WO2015096601A1 - Dispositif de formation d'image par jet d'encre et procédé de détection optique - Google Patents

Dispositif de formation d'image par jet d'encre et procédé de détection optique Download PDF

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Publication number
WO2015096601A1
WO2015096601A1 PCT/CN2014/092815 CN2014092815W WO2015096601A1 WO 2015096601 A1 WO2015096601 A1 WO 2015096601A1 CN 2014092815 W CN2014092815 W CN 2014092815W WO 2015096601 A1 WO2015096601 A1 WO 2015096601A1
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WO
WIPO (PCT)
Prior art keywords
light
ink cartridge
unit
light intensity
carriage
Prior art date
Application number
PCT/CN2014/092815
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English (en)
Chinese (zh)
Inventor
孙学进
陈浩
Original Assignee
珠海艾派克微电子有限公司
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Application filed by 珠海艾派克微电子有限公司 filed Critical 珠海艾派克微电子有限公司
Priority to JP2016520276A priority Critical patent/JP6050916B2/ja
Publication of WO2015096601A1 publication Critical patent/WO2015096601A1/fr

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/17543—Cartridge presence detection or type identification
    • B41J2/17546—Cartridge presence detection or type identification electronically
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/17—Ink jet characterised by ink handling
    • B41J2/175—Ink supply systems ; Circuit parts therefor
    • B41J2/17503—Ink cartridges
    • B41J2/1752—Mounting within the printer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/12—Guards, shields or dust excluders
    • B41J29/13—Cases or covers

Definitions

  • the invention belongs to the field of inkjet printing imaging, and in particular to an inkjet imaging device and a light detecting method.
  • an inkjet image forming apparatus in which a light receiving unit is disposed inside, and a light emitting unit (specifically, an LED) is disposed on the ink cartridge chip, and the inkjet image forming apparatus controls by transmitting corresponding control commands to the ink cartridge chip.
  • the illuminator is turned on or off to achieve the function of detecting the position of the ink cartridge and prompting the user of the state of the ink cartridge (see the reference document 1).
  • a plurality of ink cartridge chips are connected to the inkjet image forming apparatus through the same bus line, and the ink cartridge chip stores its own identification information (ID information), and the inkjet image forming apparatus specifically transmits an instruction including the ID information.
  • the ink cartridge chip confirms that it controls itself, and lights up according to the light control information in the command Or turn off the LEDs on the cartridge chip.
  • the inkjet image forming apparatus detects the light emitted from the ink cartridge chip according to the flow shown in the specification of Fig. 21-22 to determine whether the ink cartridge is mounted in the correct position.
  • the detection method is: lighting the LED on one ink cartridge chip, and then moving the bracket for mounting the ink cartridge to the light receiver, so that the illuminated ink cartridge is facing the light receiver, and if the light receiver can receive the light, it indicates The ink cartridge is installed in the correct position; then the other ink cartridges are sequentially illuminated, the carriage is moved, and it is detected whether light is received, thereby judging whether all the ink cartridges are installed in the correct position.
  • Some other types of inkjet image forming apparatuses do not detect the mounting position of the ink cartridge by the method in the reference document 1, but there are also problems in that the detecting method is too simple and regular, and there is also a problem that the light detecting time is too long. Therefore, it is necessary to improve the existing testing scheme.
  • the embodiment of the present invention provides an inkjet image forming apparatus and a light detecting method.
  • the present invention provides an inkjet image forming apparatus comprising:
  • a carriage movable on the guide rail a plurality of mounting positions including a first mounting position and a second mounting position are disposed in a moving direction of the carriage;
  • a carriage control unit for controlling the movement of the carriage on the guide rail
  • a light receiving unit capable of receiving light emitted by the light emitting units of the plurality of ink cartridges
  • a random selection unit for randomly selecting one or more ink cartridges from the plurality of ink cartridges as the suspicious ink cartridge according to a preset random algorithm
  • control unit for illuminating the light unit on the ink cartridge, and for determining whether the correct ink cartridge is installed in the installation position
  • the control unit When the carriage moves such that the first mounting position faces the light receiving unit, the control unit lights a light emitting unit of the ink cartridge to be mounted to the first mounting position, the light receiving unit receives at this time The incoming light intensity is recorded as the first light intensity; when the carriage is moved such that the second mounting position different from the first mounting position faces the light receiving unit, the control unit lights up to be mounted to the a light-emitting unit of the ink cartridge in the first installation position, wherein the light receiving unit receives the light intensity as the second light intensity;
  • the control unit determines whether the ink is correct based on the first light intensity and the second light intensity described above
  • the box is installed in the first installation position;
  • the carriage control unit moves the carriage such that the mounting position to which the suspect cartridge is to be mounted faces the light receiving unit, and the control unit illuminates the lighting unit of the suspect cartridge
  • the light intensity received by the light receiving unit at this time is recorded as the third light intensity
  • the control unit further determines whether the correct ink cartridge is mounted at an installation position to which the suspect ink cartridge is to be mounted based on the third light intensity described above.
  • the inkjet image forming apparatus further includes a timing unit
  • the timing unit is configured to calculate a time difference between a time when the control unit lights the light emitting unit of the ink cartridge to be mounted to the first mounting position and a time when the light receiving unit receives the first light intensity;
  • the control unit further determines whether the correct ink cartridge is installed in the first mounting position based on the first light intensity, the second light intensity, and the calculated time difference.
  • the inkjet image forming apparatus further includes a storage unit that stores at least a plurality of illumination modes of different flicker frequencies;
  • control unit randomly selects one of the plurality of lighting modes stored by the storage unit to control to be mounted to the a light emitting unit of the ink cartridge in the first installation position, wherein the light receiving unit receives the light intensity at the fourth time as the fourth light intensity;
  • the control unit further determines whether the correct ink cartridge is installed at the first mounting position based on whether the fourth light intensity described above corresponds to the randomly selected lighting mode.
  • the control unit when the carriage is moved such that the first mounting position faces the light receiving unit, the control unit lights the ink cartridge to be mounted to the first mounting position a light-emitting unit, the light intensity received by the light-receiving unit at this time is recorded as a first light intensity, and the control unit turns off the light-emitting unit after the first preset time; when the carriage moves to make the first light
  • the control unit lights the light emitting unit of the ink cartridge to be mounted to the first mounting position, and the light receiving unit receives the light intensity at this time as a second light intensity, and the control unit turns off the light emitting unit after the second preset time; the difference between the first preset time and the second preset time is not more than half of the first preset time, or The duration of the first preset time or the second preset time is determined by the random time generating unit.
  • the present invention also provides a method of determining whether one of a plurality of ink cartridges is properly mounted in inkjet imaging
  • the inkjet image forming apparatus comprising: a carriage movable on a guide rail, a plurality of mounting positions including a first mounting position and a second mounting position being arranged in a moving direction of the carriage a carriage control unit for controlling movement of the carriage on the guide rail; and a light receiving unit capable of receiving light emitted by the light emitting units of the plurality of ink cartridges; the method comprising:
  • the light emitting unit of the ink cartridge to be mounted to the first mounting position is illuminated, the light receiving unit receives the first a light intensity
  • the light emitting unit of the ink cartridge to be mounted to the first mounting position is illuminated a second light intensity received by the light receiving unit
  • one or more ink cartridges are randomly selected from a plurality of ink cartridges as suspicious ink cartridges
  • the method also includes determining whether the correct ink cartridge is installed at an installation location to which the suspect ink cartridge is to be mounted based on the third light intensity described above.
  • the present invention also provides another inkjet image forming apparatus comprising:
  • a movable carriage a plurality of mounting positions including a first mounting position and a second mounting position are disposed in a moving direction of the carriage;
  • a light receiving unit capable of receiving light emitted by the light emitting units of the plurality of ink cartridges
  • control unit for lighting or extinguishing the light unit on the ink cartridge, and for determining whether the correct ink cartridge is installed in the installation position
  • Controlling when the carriage moves such that the first mounting position faces the light receiving unit The unit illuminates the light-emitting unit of the ink cartridge to be mounted to the first installation position, the light intensity received by the light-receiving unit at this time is recorded as the first light intensity, and the timing unit is used for calculating the control unit to illuminate the light a time difference between a time of the unit and a time at which the light receiving unit receives the first light intensity; and when the carriage moves such that a second mounting position different from the first mounting position faces the light receiving unit, the control unit Illuminating a light emitting unit of the ink cartridge to be mounted to the first mounting position, wherein the light receiving unit receives the light intensity as the second light intensity;
  • the control unit determines whether the correct ink cartridge is mounted at the first mounting position based on the first light intensity, the second light intensity, and the calculated time difference.
  • the present invention also provides another inkjet image forming apparatus comprising:
  • a movable carriage a plurality of mounting positions including a first mounting position and a second mounting position are disposed in a moving direction of the carriage;
  • a light receiving unit capable of receiving light emitted by the light emitting units of the plurality of ink cartridges
  • control unit for illuminating the light unit on the ink cartridge, and for determining whether the correct ink cartridge is installed in the installation position
  • the control unit lights a light emitting unit of the ink cartridge to be mounted to the first mounting position, the light receiving unit receives at this time The intensity of the light is recorded as the first light intensity, and the control unit extinguishes the light emitting unit after the first preset time; when the carriage moves to make the second mounting position different from the first mounting position face the
  • the control unit lights up the light emitting unit of the ink cartridge to be mounted to the first mounting position, the light receiving unit receives the light intensity as the second light intensity, and the control unit is in the second Deactivating the lighting unit after the preset time; the difference between the first preset time and the second preset time is not more than half of the first preset time, or the first preset time or the second preset Setting the duration of the time is determined by the random time generating unit;
  • the control unit determines whether the correct ink cartridge is mounted at the first mounting position based on the first light intensity and the second light intensity described above.
  • the present invention also provides another inkjet image forming apparatus comprising:
  • a movable carriage a plurality of mounting positions including a first mounting position and a second mounting position are disposed in a moving direction of the carriage;
  • a light receiving unit capable of receiving light emitted by the light emitting units of the plurality of ink cartridges
  • a storage unit that stores at least a plurality of illumination modes of different flicker frequencies
  • control unit for illuminating the light unit on the ink cartridge, and for determining whether the correct ink cartridge is installed in the installation position
  • control unit randomly selects one of the plurality of lighting modes stored by the storage unit to control to be mounted to the a light-emitting unit of the ink cartridge in the first installation position, wherein the light receiving unit receives the light intensity as the first light intensity;
  • the control unit determines whether the correct ink cartridge is installed at the first installation position based on whether the first light intensity described above corresponds to the randomly selected illumination mode.
  • the control unit when the carriage moves such that a second mounting position different from the first mounting position faces the light receiving unit, the control unit lights up to be mounted to the a light-emitting unit of the ink cartridge in the first installation position, wherein the light intensity received by the light-receiving unit is recorded as the second light intensity; and the control unit determines whether the light is correct based on the first light intensity and the second light intensity The ink cartridge is installed in the first installation position.
  • the present invention also provides another inkjet image forming apparatus comprising:
  • a movable carriage a plurality of mounting positions including a first mounting position and a second mounting position are disposed in a moving direction of the carriage;
  • a light receiving first unit for receiving light emitted by the light emitting units of the plurality of ink cartridges
  • a light receiving second unit for receiving light emitted by the light emitting units of the plurality of ink cartridges
  • control unit for lighting or extinguishing the light unit on the ink cartridge, and for determining whether the correct ink cartridge is installed in the installation position
  • Controlling when the carriage moves such that the first mounting position faces the light receiving first unit and the second mounting position different from the first mounting position faces the light receiving second unit The unit illuminates a light emitting unit of the ink cartridge to be mounted to the first mounting position, the light receiving The light intensity received by the first unit and the light receiving second unit at this time is respectively recorded as the first light intensity and the second light intensity; then the control unit extinguishes the light emitting unit of the ink cartridge to be mounted to the first mounting position, and lights up The light-emitting unit of the ink cartridge to be mounted to the second installation position, the light receiving first unit and the light receiving second unit are respectively recorded as the third light intensity and the fourth light intensity;
  • the control unit further determines whether the correct ink cartridges are installed in the first mounting position and the second mounting position, respectively, based on the first light intensity, the second light intensity, the third light intensity, and the fourth light intensity.
  • the inkjet image forming apparatus has a plurality of light receiving units, the number of times the carriage is moved is reduced, and the mounting positions of the plurality of ink cartridges can be quickly detected.
  • the inkjet image forming apparatus and the light detecting method provided by the present invention, it is possible to improve the method of detecting the mounting position of the ink cartridge, and to reduce or prevent the inkjet image forming apparatus from detecting whether the ink cartridge mounted with the compatible ink cartridge chip is installed at the correct position, thereby avoiding There is a problem that the print quality is degraded or the printer is damaged. If a plurality of light receiving units are provided on the inkjet image forming apparatus, the efficiency of detecting the mounting position of the ink cartridge can be improved.
  • Figure 1 is a structural view of an ink cartridge for inkjet imaging
  • Figure 2 is a perspective view of an ink jet printer
  • Figure 3 is a perspective view showing a state in which the main body cover of the ink jet printer is opened;
  • Figure 4 is a diagram showing the electrical connection relationship between the respective ink cartridges and the control circuit on the main body side;
  • Figure 5 is a circuit diagram showing the arrangement of the light-emitting circuit of the ink cartridge and the light-receiving circuit of the light-receiving unit;
  • 6A and 6B are schematic views showing the process of determining the mounting position of the black ink cartridge in the first embodiment
  • FIG. 7A and 7B are schematic views showing the process of determining the installation position of the cyan ink cartridge in the first embodiment
  • FIGS. 8A and 8B are schematic views showing the process of determining the installation position of the magenta ink cartridge according to the first embodiment
  • 9A and 9B are schematic views showing the process of determining the installation position of the yellow ink cartridge in the first embodiment
  • 10A and 10B are schematic views showing the process of determining the installation position of the ink cartridge in the case where the ink cartridge is installed incorrectly;
  • Figure 11 is a time axis showing the time difference from the emitted light to the received light
  • Figure 12 is a time axis showing the duration of continuous illumination and the duration of continuous reception of light
  • FIG. 13 exemplarily shows a schematic diagram of a square wave signal of an illumination mode stored by the inkjet imaging apparatus
  • FIG. 14A and 14B are schematic views showing the process of determining the mounting position of the black and cyan ink cartridges in the fifth embodiment
  • 15A and 15B are schematic views showing the process of determining the installation position of the magenta and yellow ink cartridges in the fifth embodiment.
  • the ink cartridge 1 is a structural view of an ink cartridge detachably mounted in an inkjet image forming apparatus of the present invention, the ink cartridge 1 including an ink outlet port 12 for supplying ink to a printer, and a housing 11 containing ink, the housing including a bottom side, a front portion The side, and the upper side opposite the bottom side.
  • the ink outlet port 12 is disposed on the bottom side, and an ink cartridge chip 100 is disposed on the front side.
  • the ink cartridge 100 includes a light emitting unit 101 disposed at a position where the front side is close to the upper side.
  • the ink cartridge chip 100 includes a circuit board 103, a control unit 102, and an interface circuit 104.
  • the control unit generally includes a control circuit and a storage circuit, and the control circuit performs various processes according to a control program stored by the storage circuit and an instruction sent by the inkjet imaging device.
  • the storage circuit generally stores the control program and information about the imaging cartridge, such as the ink cartridge identification information, the manufacturer, the date of manufacture, the amount of ink used, and the amount of ink remaining.
  • the ink cartridge identification information may be an ink color letter. Information can also be the device address of the control unit, or other information that can distinguish between different ink cartridge types.
  • the memory circuit uses common non-volatile memory, such as EPROM, EEPROM, FLASH, ferroelectric memory, phase change memory, etc., and can also use volatile memory plus power supply scheme, such as SRAM + battery or capacitor, DRAM + battery Or capacitor.
  • the interface unit is configured to be electrically connected to the inkjet image forming apparatus, receive the instruction sent by the image forming apparatus, and the connection between the interface unit and the inkjet image forming apparatus may be wired or wireless.
  • the following is an example of a wired connection. .
  • FIG. 2 depicts an inkjet printer 200 in which imaging is performed using the above-described ink cartridge
  • FIG. 3 is a perspective view showing a state in which the main body cover 201 shown in FIG. 2 is opened.
  • the main portion of the ink jet printer 200 is formed by a mechanism that performs recording by scanning a carriage 205 (Fig. 3) on which a recording head and an ink cartridge are mounted.
  • the main portion is covered by the main body cover 201 and other housing portions, and a paper discharge tray 203 and an Automatic Sheet Feeder (ASF) 202 are disposed before and after the main portion.
  • the inkjet printer 200 further includes an operation unit 213 having a display indicating the state of the inkjet printer 200 in a state where the main body cover 201 is closed and a state in which the main body cover 201 is opened, and the operation unit 213 is also provided with a power source. Switch and reset switch.
  • the recording head unit 105 includes a sheet-like recording head (not shown in Fig. 3) corresponding to the ink of each color in the recording head unit 105.
  • These recording heads are scanned on a recording medium such as paper by the movement of the carriage 205, and ink is ejected to the recording medium during the scanning operation, thereby realizing recording. That is, the carriage 205 is slidably engaged with the guide shaft 207 extending in the moving direction thereof, and is movable by the driving force transmitted from the carriage motor and the drive belt.
  • each of the recording heads corresponding to the K, C, M, and Y color inks realizes ink ejection in accordance with the ejection data transmitted from the control circuit of the main body side through the flexible cable 206.
  • the inkjet printer 200 also sets a sheet feeding mechanism including a sheet feeding roller and a sheet discharging roller to supply the sheet supplied from the automatic sheet feeder 202.
  • a recording medium (not shown) is conveyed to the discharge tray 203.
  • the recording head unit 105 integrally disposed with the ink cartridge holder is detachably mounted on the carriage 205.
  • the ink cartridge holder is provided with a plurality of positions at which the ink cartridges can be mounted, and the mounting positions of the ink cartridges are arranged along the moving direction of the carriage, and the respective ink cartridges 1 are arranged.
  • the recording head unit 105 is detachably mounted at these positions.
  • the recording head unit 105 has connectors corresponding to the respective ink cartridges 1, the connectors are connected to the flexible cable 206, and on the other hand, each of the connectors is electrically connected to the interface circuit 104 of the ink cartridge chip provided on the corresponding ink cartridge 1, so that the main body
  • the side control circuit can also control the lighting and extinction of each of the light emitting units 101 on the ink cartridge chip through the flexible cable 206.
  • the light-emitting unit 101 on the ink cartridge 1 is alternately turned on and off, thereby forming a blinking light signal.
  • the user can observe this flickering light signal by viewing the ink cartridge 1 from above the inkjet printer 200, thereby achieving the purpose of reminding the user of the state of the ink amount.
  • the light receiving unit 210 having the light receiving element is disposed near an end portion of the carriage moving range. Then, when the light emitting unit 101 of each of the ink cartridges 1 passes through the light receiving unit 210 during the movement of the carriage 205, the light emission 101 of each of the ink cartridges 1 is illuminated (i.e., illuminated), and is received by the light receiving unit 210. Light emitted by the light emitting unit 101. Depending on the position of the carriage 205 at this time, the position of each of the ink cartridges 1 on the carriage 205 can be detected.
  • the line for electrically connecting the four ink cartridges 1 includes four signal lines, and is common to the four ink cartridges 1 (so-called “common bus connection”). That is, the connection line for each of the ink cartridges 1 includes four signal lines, that is, a power supply signal line "VDD”, a ground signal line “GND”, a data signal line "DATA”, and a clock signal line "CLK”.
  • the power signal line “VDD” is used to supply power to the ink cartridge chip, and the data signal line “DATA” transmits control signals (control data) related to operations such as lighting the light-emitting unit 101 and blinking the light-emitting unit 101 from the main control circuit 300 to the ink cartridge chip. ), as will be described below.
  • control signals control data
  • the present invention is not limited thereto, and for example, the ground signal line “GND” may be omitted by obtaining a ground signal by other methods.
  • the signal lines “CLK” and “DATA” can also be combined. In this case, it is not necessary to provide one signal line "DATA” for each of the ink cartridges 1, and the number of signal lines in the flexible cable 206 can be reduced.
  • the identification information stored by the ink cartridge chip can be used to send a read/write operation instruction (such as a read command, a write command) or a light control command (such as a light-lighting command, light) with the above-mentioned identification information to the ink cartridge chip through the above-mentioned common bus.
  • a read/write operation instruction such as a read command, a write command
  • a light control command such as a light-lighting command, light
  • the main control circuit 300 performs data processing and operation control in the inkjet printer 200. Therefore, although not shown in the drawing, the main control circuit 300 generally includes a CPU, a ROM in which a program for operation control is stored, and a RAM as a work area. The main control circuit 300 can control the light emission of the light emitting unit, the detection of the photocurrent according to the received light intensity, the movement of the carriage 205, and the inspection of the position of the ink cartridge 1 in accordance with a program stored in the ROM in the control circuit 300.
  • the light-emitting unit is composed of LEDs, and controls whether the cathode of the LED is grounded to GND through a switching transistor to light or extinguish the LED. It can be seen that when the switching transistor is turned on, the cathode of the LED is connected to the GND terminal, and the LED is illuminated.
  • the illumination unit can also be constructed of other light-emitting elements that can emit visible or invisible light (eg, infrared light).
  • the light receiving unit is a sensor formed of a phototransistor, and its photocurrent varies according to the intensity of light received by the light receiving unit. As shown in the circuit of Figure 5, the change in photocurrent directly affects the partial pressure across the load resistor, that is, the change in light intensity translates into a voltage change, and the received light intensity can be represented by a voltage.
  • the embodiment provides an inkjet image forming apparatus including the foregoing plurality of ink cartridges, a carriage, a carriage motor, a light receiving unit, and a main control circuit.
  • the main control circuit determines whether the correct ink cartridge is mounted to the position to be mounted by the ink cartridge position detecting process as shown in Figs. 6A to 6B to Figs. 9A to 9B.
  • the carriage 205 is movable along the guide shaft 207 and includes four positions arranged in order from the left side, that is, a black position (K), a cyan position (C), a magenta position (M), and a yellow position (Y).
  • Black ink cartridge 1K, cyan ink cartridge 1C, The magenta ink cartridge 1M and the yellow ink cartridge 1Y are mounted at a black position (K), a cyan position (C), a magenta position (M), and a yellow position (Y), respectively.
  • the light receiving unit 210 is fixed to the printer 200.
  • 6A to 9B show a state in which the ink cartridge 1 is correctly mounted in the correct position in the carriage 205, and the position of the ink cartridge to be mounted, which is the position where the ink cartridge should be properly mounted, such as the black ink cartridge 1K, is referred to.
  • the location to be installed is the black position (K).
  • the light emission of the light-emitting unit to be described below, the detection of the photocurrent according to the received light intensity, the movement of the carriage 205, and the inspection of the position of the ink cartridge 1 are controlled in accordance with a program stored in the ROM in the main control circuit 300.
  • FIGS. 6A to 6B the LED 101 of the black ink cartridge 1K is first illuminated.
  • FIG. 6A shows a position in which the light receiving unit 210 faces the black ink cartridge 1K.
  • the light receiving unit 210 receives the light intensity of 563 mV, and the process of lighting a certain ink cartridge chip in FIG. 6A and performing light detection on the position to be mounted of the specific ink cartridge by the light receiving unit is defined as positive.
  • FIG. 6B shows that the carriage 205 is moved to the left along the guide shaft 207 by a distance corresponding to one ink cartridge, and the light receiving unit 210 faces the state of the cyan ink cartridge 1C.
  • the light intensity reaching the light receiving unit 210 is 20 mV, which is much smaller than when the light receiving unit 210 faces the black ink cartridge 1K, which will be described below.
  • the process of illuminating a particular cartridge chip and photodetecting the adjacent position of the light receiving unit facing the location of the particular cartridge to be mounted is defined as adjacent location detection. It can be seen that when the ink cartridge is installed to the position to be installed, that is, the ink cartridge is installed correctly, the light intensity received by the light receiving unit in the position detecting stage is definitely greater than the light intensity received in the adjacent position detecting phase.
  • the light received by the light receiving unit may contain ambient light.
  • the light intensity received by the light receiving unit may be light scattered by the light emitting unit 101 of the black ink cartridge 1K, or may be inside and around the inkjet image forming apparatus. Ambient light.
  • FIG. 7A to FIG. 9B show a case where the above operation is sequentially performed in a state where the LED 101 of the cyan ink cartridge 1C is turned on, a state in which the LED 101 of the magenta ink cartridge 1M is lit, and a state in which the LED 101 of the yellow ink cartridge 1Y is lit.
  • the table in each drawing shows the relationship between the illuminated ink cartridges and the light intensity received by the light receiving unit at the position of the respective ink cartridges to be mounted. Due to manufacturing errors, the emitted light intensity of the plurality of LEDs of the respective ink cartridges changes even when the same current is passed through the same circuit, and as a result, this sometimes causes variations in the LEDs 101 mounted to the respective ink cartridges.
  • the replacement frequency of the ink cartridge 1 is different, stains such as mist formed by the ink adhere to the ink cartridge 1, which sometimes reduces the intensity of the emitted light. Therefore, the intensity of the emitted light of each of the ink cartridges 1 sometimes varies.
  • the data corresponding to the table shown in the above figures is stored in the storage unit of the inkjet printer 200, and the installation position of the ink cartridge is determined based on the data. Priority is given to determine the position of the black ink cartridge 1K.
  • the position at which the maximum light intensity is received by the light receiving unit 210 when the LED 101 of the black ink cartridge 1K is lit is found. Since the light intensity at the black position K is the largest and exceeds the threshold (for example, 100 mV), which is 563 mV, it can be confirmed that the black ink cartridge 1K is mounted on the black position (K).
  • the threshold for example, 100 mV
  • the color of the illuminated ink cartridge coincides with the color of the position at which the receiving light intensity is maximum at the position of the carriage 205, it is determined that the ink cartridge is mounted at the correct position, that is, at the position to be mounted.
  • the maximum value for each color it can be determined whether the cyan ink cartridge, the magenta ink cartridge, and the yellow ink cartridge are respectively mounted at the cyan position, the magenta position, and the yellow position.
  • FIG. 10A and 10B are schematic views showing the positional detection when the mounting positions of the cyan ink cartridge 1C and the magenta ink cartridge 1M are reversed. That is, the cyan ink cartridge 1C is mounted at the magenta position (M), and the magenta ink cartridge 1M is mounted at the cyan position (C).
  • the cyan ink cartridge 1C is illuminated, and the light receiving unit 210 faces the magenta ink cartridge 1M mounted on the cyan position (C), in which case the light receiving unit 210 receives the light intensity of 20 mV.
  • FIG. 10A the cyan ink cartridge 1C is illuminated, and the light receiving unit 210 faces the magenta ink cartridge 1M mounted on the cyan position (C), in which case the light receiving unit 210 receives the light intensity of 20 mV.
  • the carriage 205 is moved to the left along the guide shaft 207 by a distance corresponding to one ink cartridge, and the light receiving unit 210 faces the state of the cyan ink cartridge 1C mounted at the magenta position (M).
  • the light intensity reaching the light receiving unit 210 is 320 mV. Since the position at which the maximum light intensity is received by the light receiving unit 210 when the LED 101 of the cyan ink cartridge 1C is illuminated is the magenta position (M), the main control circuit of the inkjet printer 200 can determine that the cyan ink cartridge 1C is incorrectly mounted. In the magenta position (M). Similarly, by finding the position of the maximum light intensity received by the light receiving unit 210 when the LED 101 of the ink cartridge is illuminated, it can be determined that the magenta ink cartridge 1M is erroneously mounted at the cyan position (C).
  • the conventional ink-jet image forming apparatus merely uses a regular detecting method similar to that of Figs. 6A to 9B of the present invention to determine the mounting position of the ink cartridge, and is easily found to be a loophole in the detecting method. Therefore, in this embodiment, after determining that the correct ink cartridges are all installed in the position to be installed according to the existing method, one or more ink cartridges are randomly sampled from the plurality of ink cartridges, and then The cartridge installation position is additionally checked.
  • the main control circuit of the inkjet printer may further include a random selection module or a random selection program for randomly selecting one or more ink cartridges from the plurality of ink cartridges as the suspect ink cartridge according to a preset random algorithm.
  • the preset random algorithm described above may randomly generate one or more numbers that can correspond to the ink cartridges after numbering the plurality of ink cartridges using a conventional random number generation method. Assuming that the number of the plurality of ink cartridges is N, the N ink cartridges correspond to one of 1 to N, respectively, and then generate one or more random numbers ranging from 1 to N, so that one or more suspicious ink cartridges can be randomly selected. .
  • the random number can also be generated according to the clock of the current inkjet imaging device, for example, taking the second hand value of the internal clock of the current inkjet imaging device, for example, the second hand value is 37, dividing 32 by N, taking the remainder and then adding 1 as random number.
  • the carriage control unit moves the carriage 205 such that the suspicious cartridge is mounted to the mounting position (ie, the mounting position corresponding to the color of the suspect cartridge)
  • the main control circuit lights or extinguishes the light emitting unit of the suspect ink cartridge according to a preset rule. Since the detection methods shown in FIG. 6A to FIG. 9B are both performing the front position detection and then the adjacent position detection, when the supplementary detection of the suspicious ink cartridge is performed, the predetermined rule may be similarly performed.
  • Positive-to-adjacent detection in addition, in order to avoid repeating the same "positive-adjacent” detection, it is also possible to avoid the adjacent position detection, and then perform the position detection first, that is, "adjacent- Right, even "adjacent-positive-adjacent” or "positive-adjacent-positive”.
  • the preset rules can be set as needed.
  • the light intensity received by the light receiving unit may be different according to different preset rules, and the main control circuit determines whether the law of the received light intensity corresponds to a preset rule, thereby determining whether the suspect ink cartridge is installed. When it is at the position to be installed, it is determined whether the correct ink cartridge is installed in the position to be installed corresponding to the suspicious ink cartridge.
  • the main control circuit illuminates or extinguishes the light-emitting unit of the ink cartridge of the "adjacent-positive-adjacent" rule, if the light intensity received by the light receiving unit conforms to "smaller-larger-smaller”
  • a rule corresponding to "adjacent-positive-adjacent” means that the suspicious ink cartridge is mounted to the position to be installed.
  • the other suspicious ink cartridges use similar preset rules for supplementary detection.
  • the inkjet image forming apparatus provided in this embodiment can improve the method of detecting the mounting position of the ink cartridge because the complementary position detection has randomness, and reduce or prevent the inkjet image forming apparatus from detecting whether the ink cartridge mounted with the compatible ink cartridge chip is installed correctly. The situation of the location to avoid problems with print quality degradation or damage to the printer.
  • the inkjet image forming apparatus may not directly perform light detection on a plurality of ink cartridges according to the conventional method shown in FIG. 6A to FIG. 9B, but directly select a suspicious ink cartridge directly by using a random selection module or a program. Then, the light-emitting unit of the suspect ink cartridge is turned on or off according to the above-mentioned preset rule, and the light intensity received by the light-receiving unit is used to determine whether the suspect ink cartridge is mounted to the position to be mounted. When the randomly selected suspicious ink cartridges are installed in the correct position, you can roughly judge that all the ink cartridges are installed in the correct position.
  • the main control circuit may further comprise a timing module or a timing program for receiving the preset light in the positive position detecting phase or the adjacent position detecting phase light receiving unit. Timed when strong.
  • FIGS. 6A and 6B As an example, in FIG. 6A, when the carriage is moved such that the black position (K) faces the light receiving unit 210, the main control circuit lights the black to be mounted to the black position (K).
  • the light-emitting unit 101 of the ink cartridge 1K, the light intensity received by the light-receiving unit 210 at this time is recorded as the first light intensity, and the timing module or the timing program is used to calculate the time when the main control circuit lights the light-emitting unit and the light-receiving unit receives the first light. The time difference of the moment of light intensity.
  • the timing time of the timing module or the timing program (for example, 600 milliseconds) is determined, and the time difference between the two is obtained (600 milliseconds).
  • the main control circuit lights the light emitting unit of the black ink cartridge 1K to be mounted to the black position (K) 101.
  • the light intensity received by the light receiving unit 210 is recorded as the first light intensity at this time, and the timing module or the timing program is used to calculate the time length T1 from the main control circuit to illuminate the light emitting unit to the light emitting unit, and calculate on the other hand.
  • the light receiving unit 210 receives the first light intensity until the time length T2 at which the first light intensity is no longer received, and then compares the time difference between the two time lengths T1, T2, as shown in FIG.
  • the main control circuit determines whether the correct ink cartridge is mounted at the black position (K) based on the first light intensity, the second light intensity, and the calculated time difference (any of the above).
  • the principle that the main control circuit determines whether the correct ink cartridge is mounted at the correct position based on the first light intensity and the second light intensity described above has been described in the first embodiment and will not be described herein. Obviously, there are often small differences between different batches of components, so when the absolute value of the above time difference is small (defined as less than or equal to the first preset duration value, for example, 50 milliseconds), it can be understood as a process or device.
  • the above time difference is large (defined as greater than the first preset duration value, for example, 100 milliseconds), it is understood to be unreasonable. Therefore, when the first light intensity, the second light intensity, and the calculated time difference satisfy the above requirements, it can be confirmed that the correct ink cartridge is mounted to the correct mounting position.
  • the same cartridge can be used in the same way to confirm that it is installed in the correct installation position.
  • the main control circuit illuminates the duration of the illumination unit in the position detection phase and the adjacent position detection phase, specifically, illuminating the illumination unit in the positive position detection phase.
  • the duration is longer, and the duration of lighting the illumination unit during the adjacent position detection phase is shorter. Due to this regularity, the compatible ink cartridge chip can be delayed when receiving the light control command. If the delay time is just enough to shield the adjacent position detection phase, it can ensure that a positive comparison is received during the position detection phase. Large light intensity, while adjacent position detection phase cannot receive light.
  • the compatible cartridge chip can also trick the main control circuit of the inkjet printer.
  • the main control circuit of the inkjet printer of this embodiment may further include a random time generating module or a random time generating program for generating a random length of time.
  • FIG. 6A when the carriage is moved such that the black position (K) faces the light receiving unit 210, the main control circuit lights the black to be mounted to the black position (K).
  • the light-emitting unit 101 of the ink cartridge 1K, the light intensity received by the light-receiving unit 210 at this time is recorded as the first light intensity, and the control unit turns off the light-emitting unit after the first preset time.
  • FIG. 6A when the carriage is moved such that the black position (K) faces the light receiving unit 210, the main control circuit lights the black to be mounted to the black position (K).
  • the light-emitting unit 101 of the ink cartridge 1K, the light intensity received by the light-receiving unit 210 at this time is recorded as the first light intensity, and the control unit turns off the light-emitting unit after the first preset time.
  • the main control circuit lights the black to be mounted to the black position (K)
  • the light-emitting unit 101 of the ink cartridge 1K the light intensity received by the light-receiving unit 210 at this time is recorded as the second light intensity, and the control unit turns off the light-emitting unit after the second predetermined time. That is to say, the light-emitting unit on the black ink cartridge is continuously illuminated in the forward position detecting phase and the adjacent position detecting phase for the first preset time and the second preset time, respectively.
  • the difference between the first preset time and the second preset time is not more than half of the first preset time, or the duration of the first preset time or the second preset time is determined by the random time.
  • the generating unit is determined.
  • the main control circuit determines whether the correct ink cartridge is mounted on the black position (K) based on the first light intensity and the second light intensity described above.
  • the same cartridge can be used in the same way to confirm that it is installed in the correct installation position.
  • the duration of the lighting unit is substantially the same for the position detecting phase and the adjacent position detecting phase, or the duration is determined by the random time generating unit, so that the compatible ink cartridge chip can be prevented from passing the delay or recording light detection.
  • the light receiving unit on the inkjet image forming apparatus is only used to detect whether the light emitting unit emits light, that is, whether the light emitting unit emits light by determining whether the received light intensity exceeds a certain threshold.
  • the present embodiment provides an inkjet image forming apparatus, which, similarly to the first embodiment, includes a plurality of ink cartridges, a carriage, a light receiving unit, and a control unit, except that the memory is further included.
  • the storage unit is configured to store at least a plurality of different blinking frequency illumination modes.
  • the plurality of representations represent at least two.
  • Illumination modes of different flicker frequencies including illumination modes of constant flicker frequency and illumination modes of non-constant flicker frequencies.
  • the square wave signal is used to control the switching transistor shown in Fig. 5, assuming that the switching transistor is turned on when the square wave signal is at a high level.
  • the illumination mode 1 and the illumination mode 2 are both illumination modes of constant blinking frequency
  • the blinking frequency of the illumination mode 1 is higher than the flashing frequency of the illumination mode 2
  • the illumination mode 3 is the illumination mode of the non-constant blinking frequency
  • the blinking frequency is gradually slowed down.
  • the 50% duty ratio shown in FIG. 13 is not limited to control the light emitting unit, and may be other proportional duty ratios or variable duty ratios.
  • the main control circuit of the inkjet image forming apparatus is stored from the plurality of light emitting modes of the storage unit, One of them is randomly selected to control the light-emitting unit of the black ink cartridge 1K to be mounted to the black mounting position (K), and assuming that the light-emitting mode 1 shown in FIG. 13 is randomly selected, the light-emitting unit blinks 4 times per second.
  • the mode ie, the flicker frequency is 4 Hz
  • the light receiving unit receives the light intensity at this time corresponding to the randomly selected illumination mode 1, which is a duty ratio of about 50% and a frequency of about 4 Hz.
  • Square wave signals considering noise and other factors may not be clear, standard square wave signals). Since the light intensity received by the light receiving unit corresponds to the light emission mode 1, the main control circuit can judge that the black ink cartridge 1K is mounted to the correct black mounting position (K).
  • the main controller can determine whether the correct ink cartridge is mounted at the position to be mounted by whether the light intensity received by the light receiving unit corresponds to the randomly selected illumination mode.
  • the control unit when the carriage is moved such that a cyan mounting position (C) different from the black mounting position (K) faces the light receiving unit 210, the control unit lights up to be mounted to the a light-emitting unit of the black ink cartridge 1K of the black mounting position (K), the light intensity received by the light receiving unit at this time is recorded as the second light intensity; then the control unit detects the light emitted to the light-emitting unit except at the facing position In addition to the inspection, it is also possible to jointly determine the correct ink cartridge to be installed in the position to be installed in combination with the second light intensity.
  • the mounting position of the ink cartridge is determined in accordance with the method as shown in Figs. 6A to 9B, and it is necessary to move the carriage four times. Due to the increasing demand for imaging color, the number of ink cartridges installed in the inkjet imaging device reached 8 (ie 8 colors), and even reached 12. If the detection is moved one by one according to the prior art, it takes a long time to detect each time, which affects the working efficiency of the inkjet image forming apparatus.
  • the inkjet image forming apparatus of the present embodiment includes at least two light receiving units in addition to the plurality of ink cartridges, the carriage, and the main control circuit described above. For convenience of explanation, the specific embodiment of the present embodiment will be described by taking the inkjet image forming apparatus including the light receiving first unit 210 and the light receiving second unit 220 shown in FIGS. 14A to 15B as an example.
  • FIGS. 14A to 14B the LED 101 of the black ink cartridge 1K and the LED 101 of the cyan ink cartridge 1C are sequentially illuminated.
  • Fig. 14A shows a case where the light receiving unit 210 faces the black ink cartridge 1K, the light receiving unit 220 faces the position of the cyan ink cartridge 1C, and the LED 101 of the black ink cartridge 1K is first illuminated.
  • the light receiving unit 210 receives the light intensity of 563 mV
  • the light receiving unit 220 receives the light intensity of 20 mV, which is much smaller than the light intensity received by the light receiving unit 210 facing the black ink cartridge 1K. Then, as shown in FIG.
  • the main control circuit extinguishes the light emitting unit 101 of the black ink cartridge 1K to be mounted to the black mounting position (K), and illuminates the cyan ink cartridge 1C to be mounted to the cyan mounting position (C).
  • the LED 101 of the cyan ink cartridge 1C is lit, the light intensity reaching the light receiving unit 210 is 20 mV, and the light intensity reaching the light receiving unit 220 is 320 mV.
  • FIG. 15A shows that the carriage 205 is moved to the left along the guide shaft 207 by a distance corresponding to the two ink cartridges, and the light receiving unit 210 faces the magenta ink cartridge 1M, and the light receiving unit 220 faces the yellow ink cartridge 1Y. status.
  • the above-described operations are sequentially performed to sequentially illuminate the magenta ink cartridge 1M and the yellow ink cartridge 1Y, and record the light intensity received by the light receiving units 210, 220.
  • the table in Figs. 14A to 15B shows the relationship between the illuminated ink cartridges and the light intensities received by the light receiving unit at the positions of the respective ink cartridges to be mounted.
  • the data corresponding to the table shown in the above figures is stored in the storage unit of the inkjet printer 200, and the installation position of the ink cartridge is determined based on the data. Priority is given to determine the position of the black ink cartridge 1K.
  • a light receiving unit (light receiving unit 210 or light receiving unit 220) that receives the maximum light intensity when the LED 101 of the black ink cartridge 1K is lit is found, and the position of the light receiving unit is found. Since the light intensity received by the light receiver 210 at the black position K is the largest and exceeds a threshold (for example, 100 mV), it is 563 mV, and the light receiving unit 220 that does not face the black position K receives a very small light intensity (20 mV).
  • a threshold for example, 100 mV
  • the black ink cartridge 1K is mounted at the black position (K).
  • the color of the illuminated ink cartridge coincides with the color of the position of the light receiving unit at which the received light intensity is maximum, it is determined that the ink cartridge is mounted at the correct position, that is, at the position to be mounted.
  • the maximum value for each color, and the light intensity received by the light receiving unit is one hour and one hour, respectively, it can be determined whether the cyan ink cartridge, the magenta ink cartridge, and the yellow ink cartridge are respectively installed in the cyan position, magenta Position and yellow position.
  • the inkjet image forming apparatus has at least two light receiving units, the number of times the carriage is moved is reduced, and the mounting positions of the plurality of ink cartridges can be quickly detected.
  • the detection speed can be greatly improved, especially when the number of light receiving units and ink cartridges provided on the inkjet image forming apparatus is increased.
  • the installation position of the ink cartridge can be determined by a custom lighting control method at one time without moving the carriage, so that the detection can be completed more quickly.
  • custom lighting methods such as sequentially lighting and extinguishing the light-emitting units on the respective ink cartridges by means of a marquee, and simultaneously detecting the received light intensity by using the same light receiving unit as the number of ink cartridges, if multiple light
  • the light intensity law received by the receiving unit corresponds to the lighting method of the marquee, and it can be determined that all the ink cartridges are installed to the position to be installed, that is, the correct position.
  • the various embodiments described above generally employ only one irregular illumination control method or configuration of the inkjet imaging device and corresponding detection methods.
  • two or more detection schemes of the above embodiments may also be combined, for example, in combination with the random selection unit of the first embodiment and the timing unit of the second embodiment.
  • the random time generating unit of the third embodiment and the plurality of light receiving units of the fourth embodiment for example, any one or several of the first to fourth embodiments are applied to the fifth embodiment, and other combinations are obtained. .
  • the aforementioned program can be stored in a computer readable storage medium.
  • the program when executed, performs the steps including the above method embodiments;
  • the foregoing storage medium includes various media that can store program codes, such as a ROM, a RAM, a magnetic disk, or an optical disk.

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  • Ink Jet (AREA)

Abstract

L'invention concerne un dispositif de formation d'image par jet d'encre et un procédé de détection optique. Le dispositif de formation d'image par jet d'encre comprend : une pluralité de cartouches d'encre (1), un cadre coulissant (205) qui peut se déplacer sur un arbre de guidage (207), une unité de réception optique (210), une unité de sélection aléatoire et une unité de commande (102). Le dispositif de formation d'image par jet d'encre et le procédé de détection optique et le procédé de détection optique améliorent un procédé permettant de détecter une position d'installation de cartouche d'encre, de réduire ou d'empêcher des situations où le dispositif de formation d'image par jet d'encre ne peut pas détecter si une cartouche d'encre installée avec une puce de cartouche d'encre compatible est installée en bonne position, ce qui empêche une réduction de la qualité d'impression ou des dégâts à l'imprimante. Si une pluralité d'unités de réception optiques sont agencées sur le dispositif de formation d'image par jet d'encre, l'efficacité de détection de la position d'installation des cartouches d'encre peut également être accrue.
PCT/CN2014/092815 2013-12-25 2014-12-02 Dispositif de formation d'image par jet d'encre et procédé de détection optique WO2015096601A1 (fr)

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