WO2022166697A1 - 一种碳粉盒 - Google Patents

一种碳粉盒 Download PDF

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Publication number
WO2022166697A1
WO2022166697A1 PCT/CN2022/073931 CN2022073931W WO2022166697A1 WO 2022166697 A1 WO2022166697 A1 WO 2022166697A1 CN 2022073931 W CN2022073931 W CN 2022073931W WO 2022166697 A1 WO2022166697 A1 WO 2022166697A1
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WO
WIPO (PCT)
Prior art keywords
toner cartridge
circuit board
contact electrode
capacitor
printed circuit
Prior art date
Application number
PCT/CN2022/073931
Other languages
English (en)
French (fr)
Inventor
陈浩
陈子荣
Original Assignee
珠海艾派克微电子有限公司
纳思达股份有限公司
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Publication date
Application filed by 珠海艾派克微电子有限公司, 纳思达股份有限公司 filed Critical 珠海艾派克微电子有限公司
Publication of WO2022166697A1 publication Critical patent/WO2022166697A1/zh

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    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0822—Arrangements for preparing, mixing, supplying or dispensing developer
    • G03G15/0865—Arrangements for supplying new developer
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00—Apparatus for electrographic processes using a charge pattern
    • G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
    • G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
    • G03G15/0896—Arrangements or disposition of the complete developer unit or parts thereof not provided for by groups G03G15/08 - G03G15/0894
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/16—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements
    • G03G21/18—Mechanical means for facilitating the maintenance of the apparatus, e.g. modular arrangements using a processing cartridge, whereby the process cartridge comprises at least two image processing means in a single unit
    • G03G21/1803—Arrangements or disposition of the complete process cartridge or parts thereof
    • G03G21/1814—Details of parts of process cartridge, e.g. for charging, transfer, cleaning, developing

Definitions

  • the present invention relates to the field of printing and imaging, in particular, the present invention relates to a toner cartridge and a system for detecting the remaining amount of toner.
  • printing consumables such as ink cartridges, toner cartridges, and toner cartridges are required, wherein the ink cartridges contain ink, and the toner cartridges and toner cartridges contain ink. There is toner.
  • These printing consumables have shorter lifespans than printers. Therefore, during use, the service life of these printing consumables needs to be monitored, and users are also required to frequently purchase and replace printing consumables after they are used up.
  • the toner cartridge includes a toner container and a waste toner container, a developing component disposed in the toner container, toner contained in the toner container, and a toner container in the toner container. Accessories such as the photosensitive drum on the waste toner box.
  • a toner remaining detection system in the toner cartridge. By setting a detection part inside the toner silo, and then detecting the electrical signal between the developing part and the detection part, to determine the amount of toner remaining in the toner bin.
  • the present invention provides a toner cartridge, comprising:
  • the first contact electrode and the second contact electrode are disposed on the first surface of the circuit board.
  • the first contact electrode is provided on the first printed circuit board, and the second contact electrode is provided on the second printed circuit board.
  • both the first contact electrode and the second contact electrode are arranged on the third printed circuit board.
  • the capacitor module is disposed on the second surface of the circuit board.
  • the capacitor module is disposed on the first printed circuit board, or the capacitor module is disposed on the second printed circuit board.
  • the capacitor module is arranged on the third printed circuit board.
  • the second surface of the circuit board includes a first conductive area, and the first conductive area is connected to the first contact electrode located on the first surface.
  • the toner cartridge further includes: a developing roller or a magnetic roller; the developing roller or the magnetic roller is connected to the first conductive area.
  • the capacitance module is a capacitance detection device; the capacitance detection device includes two opposite electrodes, and an insulating medium is filled between the two opposite electrodes.
  • the two opposite electrodes are coils.
  • the capacitor module is a plug-in capacitor
  • the plug-in capacitor includes a capacitor body; the height of the capacitor body protruding from the circuit board is less than 10 mm.
  • the plug-in capacitor further includes pins; the pins are bent so that the capacitor body is located outside the plane of the circuit board.
  • the toner cartridge further includes: an installation part; and the fixing method between the installation part and the circuit board includes a snapping method, a sticking method, or a welding method.
  • the present invention it is not necessary to set up a real toner quantity detection mechanism in the toner cartridge, and the results of the printer detection will not be fluctuating and sudden.
  • arranging the first contact electrode and the second contact electrode on the circuit board can enhance the stability of the contact electrode and make it difficult to fall off; meanwhile, the electrical connection between the contact electrode and the capacitor module can be made firmer.
  • FIG. 1 is a block diagram of an electrical connection between a capacitor module and a printed circuit according to an embodiment of the present invention.
  • FIG. 2 is a block diagram of another electrical connection between a capacitor module and a printed circuit according to an embodiment of the present invention.
  • FIG. 3 is a block diagram of an equivalent electrical connection between a capacitor module and a printed circuit according to an embodiment of the present invention.
  • FIG. 4 is a block diagram of electrical connection when the capacitor module according to the embodiment of the present invention is a chip capacitor.
  • FIG. 5 is an electrical connection block diagram of a capacitor module disposed on one of the printed circuit boards according to an embodiment of the present invention.
  • FIG. 6 is a block diagram of an electrical connection of a capacitor module independently disposed on a printed circuit board according to an embodiment of the present invention.
  • FIG. 7 is a perspective view of a capacitor module disposed on a printed circuit board according to an embodiment of the present invention.
  • FIG. 8 is a side view of a capacitor module disposed on a printed circuit board according to an embodiment of the present invention.
  • FIG. 9 is a view showing that the capacitor module according to the embodiment of the present invention is disposed outside the printed circuit board.
  • FIG. 10 is a side view of the capacitor module according to the embodiment of the present invention disposed outside the printed circuit board.
  • FIG. 11 is an electrical connection block diagram when the capacitance module according to the embodiment of the present invention is a capacitance detection device.
  • FIG. 12 is a block diagram of electrical connection when the electrodes of the capacitance detection device according to the embodiment of the present invention are coils.
  • FIG. 13 is a block diagram of the electrical connection of the first side of the printed circuit board according to the embodiment of the present invention.
  • FIG. 14 is a block diagram of the electrical connection of the second side of the printed circuit board according to the embodiment of the present invention.
  • FIG. 15 is a perspective view of a toner cartridge according to the present application.
  • FIG. 16 is an enlarged view of A in FIG. 15 .
  • 17 is a perspective view of the toner cartridge part of the toner cartridge according to the present invention with the end cap removed.
  • FIG. 18 is a block diagram of an electrical connection of a toner cartridge and a capacitor module according to an embodiment of the present invention.
  • a toner cartridge is a replaceable printing consumable that is detachably installed in the printer.
  • 15 to 17 are structural views of a toner cartridge according to an embodiment of the present invention.
  • the toner cartridge 100 includes a toner container 110 , a waste toner container 120 and an end cover 130 . Wherein, the end cover 130 is located at the end of the toner cartridge in the length direction, and is connected with the toner container and/or the waste toner container.
  • the powder bin 110 has a housing and an accommodating space surrounded by walls.
  • a developing member 111 is provided in the powder container, and a developer for development (an example of the developer is toner) is also stored in the accommodating space of the powder container 110 .
  • the developing member 111 may be a developing roller or a magnetic roller, and both ends of the developing member 111 are mounted on the sidewall surfaces 112 at both ends of the powder container, so that the developing member 111 can rotate and work.
  • the toner cartridge 100 further includes a capacitor module (eg, the capacitor 140 in the figure), a first electrical contact portion 150 , and a second electrical contact portion 160 .
  • the first electrical contact portion 150 and the second electrical contact portion 160 may be components having a conductive function, such as a conductive steel sheet, a conductive resin piece, a conductive wire, or the like. It is used to form an electrical connection with the relevant electrical contacts/probes in the printer to receive electrical signals or detection signals from the printer.
  • the first electrical contact portion 150 and the second electrical contact portion 160 are respectively fixed on the toner cartridge such as the end cap or the toner container at positions corresponding to the relevant electrical contacts/probes in the printer, which may not be particularly limited.
  • the first electrical contact portion 150 and the second electrical contact portion 160 are both disposed on the surface of the end cover 130 facing the bottom of the toner cartridge.
  • the first electrical contact portion 150 can be in contact with the developing member 111 and the first end 141 (first pin) of the capacitor 140 (eg, welding, pasting) to form an electrical connection.
  • the first electrical contact portion 150 contacts the shaft end of the magnetic core of the developing member 111 (when the developing member 111 is a magnetic roller) or the shaft end of the shaft core (when the developing member 111 is a magnetic roller) through a folded steel sheet structure When the member 111 is a developing roller), the voltage received from the first electrical contact portion 150 is conducted to the developing member 111 .
  • the second electrical contact portion 160 is in contact with the second end 142 (second pin) of the capacitor 140 (eg, soldering, pasting) to form an electrical connection, and the first end and the second end of the capacitor 140 can be electrically conductive through Wires, conductive steel sheets and other forms extend from the body of the capacitor 140 to form an electrical connection between the capacitor 140 and other components.
  • the second electrical contact portion 160 is in contact with a conductive member (eg, a conductive steel sheet/conductive iron sheet/conductive resin sheet/conductive metal wire) disposed in the powder container, so the developing part 111 is in contact with the conductive member A pair of two equivalent electrodes is formed therebetween. Changes in the amount of toner contained in the toner cartridge can affect the capacitance value between the two equivalent electrodes. Therefore, the capacitance between these two equivalent electrodes can be detected, so as to know the amount of toner contained in the toner bin.
  • a conductive member eg, a conductive steel sheet/conductive iron sheet/conductive resin sheet/conductive metal wire
  • the electrical signal source of the printer applies a bias voltage to the first electrical contact 150 (the developing electrical connection to the first electrical contact 150 at this time)
  • the component 111 may also receive an applied bias voltage
  • the detector of the printer is electrically connected to the second electrical contact 160 to detect the electrical signal of the conductive member in the powder container. Therefore, the amount of toner in the toner bin can be converted according to the electrical signal detected at the second electrical contact portion 160 .
  • the toner contained in the toner cartridge will move and shake.
  • the detector of the printer detects an electrical signal at the second electrical contact portion 160, which may not accurately reflect the amount of toner in the toner cartridge. For example, abnormal situations such as the toner quantity fluctuating high and low, sudden change, etc., cause the user to be unable to use the toner cartridge normally.
  • the conductive member disposed in the powder bin needs a large area, length and volume to form a stable equivalent capacitance with the developing part 111, which also requires more precise installation and fixation, which undoubtedly increases the material of the conductive member. cost and manufacturing cost of the toner cartridge.
  • a capacitor module with a fixed capacitance value is arranged on the toner cartridge to replace the equivalent capacitance arranged in the toner silo, so that there is no need to install a conductive device for detecting the actual toner quantity in the toner silo. member.
  • the printer detects is an additionally installed capacitor module, not the electrostatic capacitance value of the real toner in the toner cartridge.
  • the capacitor module with a fixed capacitance value can have an electrostatic capacitance value indicating a sufficient amount of toner.
  • the printer can still get the message that the toner is about to run out. Specifically, the printer can judge whether the toner is used up based on the following two conditions.
  • Condition 1 the remaining amount of toner is estimated by the software.
  • the threshold for the number of printed pages can be preset, for example, it can be 1000 pages. That is, after printing 1000 pages, the toner is considered to be exhausted. Based on this method, when the number of printed pages recorded by the printer reaches 1000 pages, the printer considers that the toner is used up.
  • the toner coverage is 5% of the page, but in actual printing scenarios, the number of words per sheet may be very small, so even if the printer thinks the toner is out at this time, there may actually be Residual toner is available.
  • the present application can further set the page overflow threshold.
  • the page overflow threshold may be, for example, 20%.
  • the printer determines that the number of printed pages has reached the threshold of the number of printed pages, it can further determine whether the number of multi-printed pages exceeds the number of pages overflow threshold. If not, the printing operation can continue; otherwise, it is determined that printing cannot continue.
  • the toner margin is obtained through the capacitance value fed back by the capacitance module.
  • the printer will give priority to the second condition although the judgment criterion of the threshold of the number of printed pages of condition one has been satisfied. In other words, if the capacitance value of the capacitor module is fixed, it will give the printer a false signal of "sufficient toner remaining". Then, the printer will continue printing.
  • the printer will consider that the capacitor module is faulty. At this point, the printer has determined that it cannot continue printing.
  • this solution always gives the printer a false signal of "sufficient toner remaining" through a capacitor module with a fixed capacitance value, but the false signal does not affect the printer's judgment of the remaining toner based on condition 1.
  • the present invention also considers solving the problem of poor electrical connection between the capacitor module and the printer.
  • first and second ends of the capacitor 140 can be directly used as the first and second electrical contact parts, that is, the first and second ends (pins) of the capacitor 140 can be directly used to receive and output voltage and current. Isolate the electrical signal and complete the electrical connection to the capacitor 140 .
  • the capacitor 140 is clamped, pasted or welded to the conductive steel sheet, the first electrical contact portion 150 and the second electrical contact portion 160 made of conductive resin as shown in FIG.
  • the capacitor 140 can be arranged in the toner cartridge, for example, it can be arranged between the end cover 130 and the toner container 110 . Specifically, the capacitor 140 can be fixed on the side wall surface 112 or fixed on the inner side of the end cover 130, so that the capacitor 140 is invisible when viewed from the outside of the toner cartridge. It is not only beneficial to the appearance of the toner cartridge, but also avoids electrical contact disconnection that may be caused by external impacts, and is dust-proof, moisture-proof, and avoids the phenomenon of poor electrical conduction.
  • the capacitor 140 can also be arranged on the outer surface of the toner cartridge, for example, it can extend out of the toner cartridge, and be arranged on the bottom of the toner cartridge or on the outer surface of the end cover. It is shown in FIG. 15 that the capacitor 140 is arranged on the side of the end cap, as long as it does not affect the installation of the toner cartridge and the printing work. In this way, whether the toner cartridge has a capacitor 140 can be visually identified from the outside, which is conducive to the rapid identification of the toner cartridge's model and performance, and facilitates the replacement and maintenance of the capacitor, without the need to disassemble the end caps and other related parts.
  • the capacitor 140 can be placed on the relevant bearing structure of the toner cartridge by using the bending and shaping effect of the conductive wires (pins) drawn from the capacitor 140 .
  • the capacitor 140 can also be fixed on the relevant bearing structure of the toner cartridge by means of welding, pasting, snapping or the like.
  • the relevant bearing structure of the above-mentioned toner cartridge may be a component in the toner cartridge, or a toner container, a waste toner container, a shell injection part of an end cover, etc., or a detachable set on the toner container for The support frame that carries the capacitor does not need to be described here.
  • the capacitor can also be soldered on the circuit board in advance, and then set on the toner cartridge using the above-mentioned various installation methods.
  • the circuit board with the capacitors welded is disposed on the toner cartridge, and then connected to the above-mentioned first electrical contact portion 150 and second electrical contact portion 160 through conductive lines.
  • the above-mentioned first electrical contact portion 150 and second electrical contact portion 160 may be provided on the circuit board.
  • the first electrical contact portion 150 and the second electrical contact portion 160 may be applied to the circuit board by hot pressing copper foil, so that it is not easy to fall off.
  • arranging the first electrical contact portion 150 and the second electrical contact portion 160 on the circuit board can achieve the technical effect of facilitating soldering of the capacitor module.
  • the pins of the capacitor module have strong tin-wetting ability, the pins of the capacitor module are connected to the first electrical contact portion 150 and the second electrical contact portion 160 by welding, so that the capacitor module is not easy to fall off, which is conducive to the formation of stable electrical connect. Therefore, the problems of poor electrical connection between the capacitor module and the printer, too small area of the first and second electrical contacts, easy loosening of capacitor pins, and difficulty in fixing the capacitor are overcome.
  • the foregoing embodiments will be described in an expanded manner below.
  • the capacitor module of the present invention is not limited to the toner cartridge shown in Figures 15-17, but can also be applied to other toner cartridges whose capacitance value can be detected by the printer.
  • the toner cartridge includes a toner container without a waste toner container
  • the toner container only includes a toner container without the waste toner container and the developing part 111
  • the toner cartridge is a cylindrical toner container. Therefore, the present invention provides a toner cartridge, which can be a toner cartridge including at least the following features:
  • FIG. 18 exemplarily provides a block diagram of a toner cartridge.
  • the toner cartridge 100 includes a housing 101, which is assembled from various parts, or is injection-molded, and can be made of plastic, resin, and other materials.
  • a chamber for accommodating toner is formed in the casing 101 , wherein the toner is not visible from the outside, and the figure is the toner 102 in the dotted frame.
  • the toner cartridge 100 further includes a capacitor module 30 and a first contact electrode 41 and a second contact electrode 42 electrically connected to the capacitor module 30 .
  • the first contact electrode 41 and the second contact electrode 42 are provided on the housing 101 , wherein the first contact electrode is used to receive the detection voltage sent by the printer when in contact with the relevant contact/probe in the printer.
  • the second contact electrode is used for the printer to detect an induced voltage corresponding to the detection voltage at the second contact electrode when it is in contact with the relevant contact/probe in the printer.
  • the first contact electrode receives the detection voltage, and the second contact electrode outputs an induced voltage corresponding to the detection voltage, so there is capacitive coupling between the first contact electrode and the second contact electrode, and the capacitive reactance of the capacitive coupling can be fed back through the capacitive module, Since this capacitive reactance is always fixed, the capacitance value of the capacitive module is also always fixed.
  • the capacitor module 30 may be a component with a rated capacitance such as a chip capacitor, a plug-in capacitor (eg, a ceramic capacitor), or an equivalent capacitor formed by two opposite electrodes.
  • the capacitance module is a module with a fixed capacitance value.
  • the capacitor module 30 has no substantial relationship with the actual amount of toner in the toner cartridge 100 , and the printer cannot detect the actual amount of the toner 102 in the toner cartridge 100 through the capacitor module 30 .
  • the first end of the capacitor module 30 is electrically connected to the first contact electrode 41
  • the second end of the capacitor module 30 is electrically connected to the second contact electrode 42 .
  • the contact electrodes on the toner cartridge for electrical connection with the printer are preferentially arranged on the printed circuit board, and the contact electrodes may be copper foils.
  • the contact electrodes arranged on the printed circuit board have the advantages of mass production, stable connection when soldered by solder paste, and easy installation.
  • FIG. 1 shows an example in which two contact electrodes connected to the capacitor module are respectively arranged on two different printed circuit boards.
  • the first contact electrode 11 is provided on the first printed circuit board 10
  • the second contact electrode 21 is provided on the second printed circuit board 20
  • the first printed circuit board 10 passes through the capacitor module (including the capacitor body 32 and the Conductive pins 31 ) are connected to the second printed circuit board 20 .
  • the pins 31 can be pasted on the first and second contact electrodes with conductive adhesive, or soldered to the first and second contact electrodes with solder paste or tin wire.
  • the black dots 33 in the figure represent the soldering points. Since the conductive pins 31 of the capacitor module are soldered to the first and second contact electrodes of the printed circuit board, the connection is very stable, and it is not easy to loosen, and the capacitor module can also be fixed after fixing the printed circuit boards 10 and 20. Also, the printed circuit boards 10 and 20 can be separated and can be twisted and moved freely. Therefore, the first and second contact electrodes can be arranged on different spatial planes to adapt to the uneven surface of the toner cartridge and to better connect with the printer. The areas of the first and second contact electrodes on the printed circuit board can be set larger as required, so as to confirm that the electrical connection with the printer is more convenient and stable.
  • the two contact electrodes connected to the capacitor module can also be arranged on the same printed circuit board.
  • the first contact electrodes 41 and the second contact electrodes 42 are arranged on the same surface of the third printed circuit board 40 .
  • the first end of the capacitor module 30 is connected to the first contact electrode 41 by welding and pasting, and the second end can also be connected to the second contact electrode 42 by welding and pasting.
  • Both the two contact electrodes connected to the capacitor module are arranged on the same printed circuit board, which is beneficial to the manufacturing cost and installation cost, especially the toner cartridge requires the first contact electrode 41 to be farther away from the second contact electrode 42. near the location.
  • This embodiment is more suitable for the toner cartridge when the first contact electrode 41 and the second contact electrode 42 are required to be in the same horizontal plane.
  • the third printed circuit board 40 can be made of flexible materials, and the printed circuit board 40 is a flexible circuit board, which can be installed according to the installation After installation, the printed circuit board 40 is installed on the toner cartridge in the form of bending and bending.
  • the printed circuit board 40 can also be a rigid circuit board, and it is only necessary to thin the circuit board between the first contact electrode 41 and the second contact electrode 42 of the circuit board. thickness, so that the printed circuit board 40 has a certain degree of bendability/flexibility.
  • the first and second printed circuit boards are rigid boards
  • the capacitor module is arranged on a flexible circuit board
  • the flexible circuit board is used for connecting the first and second printed circuit boards.
  • FIG. 3 shows an equivalent circuit diagram when the capacitor module is arranged on the printed circuit board 40 , and the capacitor module is represented by symbol C. As shown in FIG. The two signal terminals of the capacitor C are respectively connected to the first contact electrode 41 and the second contact electrode 42 provided on the printed circuit board 40 .
  • the capacitor module in FIG. 4 is specifically a chip capacitor 50 , which is disposed on the same third printed circuit board 40 together with the first contact electrode 41 and the second contact electrode 42 . Since the chip capacitor 50 is small in size and occupies a small area, when the area of the printed circuit board 40 is relatively large, it is more convenient for installation, maintenance and replacement to be provided on the printed circuit board 40 .
  • the capacitor module can be arranged between the two contact electrodes, that is, the capacitor module and the contact electrode can be arranged on the same side of the printed circuit board superior.
  • the chip capacitor 50 is arranged between the first contact electrode 41 and the second contact electrode 42, and the chip capacitor 50 is arranged on the same surface as the first contact electrode 41 on the third printed circuit board 40, This side can be defined as the first side; the opposite side of the third printed circuit board 40 can be defined as the second side.
  • the printed circuit board can be single-sided, thereby reducing its manufacturing cost.
  • the capacitor module can also be arranged on the second side, that is, the capacitor module is arranged on the other side of the printed circuit board that is different from the two contact electrodes, which is beneficial to reduce the area of the printed circuit board, for example, on the printed circuit board Only the contact electrode area is reserved on the first side of the device, and there is no need to reserve the position of the capacitor module.
  • the printed circuit board carrying the contact electrodes may also be in the form of FIG. 5 and FIG. 6 .
  • the first contact electrode 11 and the chip capacitor 50 are provided on the first printed circuit board 10
  • the second contact electrode 21 is provided on the second printed circuit board 20.
  • the first printed circuit board 10 and the second printed circuit board The printed circuit boards 20 are connected by wires 60 .
  • the chip capacitors can also be arranged on the second printed circuit board 20 instead of the first printed circuit board 10 .
  • the first contact electrode 11 , the chip capacitor 50 and the second contact electrode 21 are respectively arranged on three different printed circuit boards, that is, the first contact electrode 11 is arranged on the printed circuit board 10 , the chip capacitor 50 is Provided on the printed circuit board 70 , the second contact electrodes 21 are provided on the printed circuit board 20 .
  • the three are electrically connected together by wires 60 , so that the first end of the chip capacitor 50 is electrically connected to the first contact electrode 11 , and the second end is electrically connected to the second contact electrode 21 .
  • Using two different plates to place different contact electrodes can flexibly adapt to the situation that the first contact electrode and the second contact electrode are far apart and at different spatial levels.
  • arranging the capacitor module on the printed circuit board, such as the example in FIG. 6 is beneficial to mass production and fixing the chip capacitor 50 .
  • the capacitor module is a plug-in capacitor, which includes a capacitor body 32 and pins 31 , and the capacitor body 32 is arranged on the same surface (first surface) as the contact electrodes 41 and 42 , in order to reduce the capacitance
  • the body 32 protrudes from the height of the printed circuit board 40
  • the pins 31 are basically inserted into the via holes of the printed circuit board 40 to be fixed by welding, and the exposed pins 31 are short or not exposed.
  • the height of the capacitor module protruding from the first surface is less than 10 mm, which can avoid the influence of the printed circuit board 40 on the toner cartridge.
  • the capacitor body 32 may also be disposed on another side (eg, the second side) that is not the same as the contact electrodes 41 and 42 .
  • the present invention also provides other embodiments.
  • the orthographic projection of the capacitor module 30 is outside the printed circuit board 40 , so the first surface of the printed circuit board 40 where the first contact electrodes 41 and the second contact electrodes 42 are located is substantially flat.
  • FIG. 10 shows an embodiment in which the pins 31 of the capacitor module are bent at approximately 90 degrees, so that the capacitor body 32 is placed outside the printed circuit board 40. This embodiment only protrudes from the printed circuit board 40 by a little height, effectively reducing the The effect of the height of the capacitor module on the toner cartridge.
  • the capacitor module is described above by taking plug-in capacitors and chip capacitors as examples, and the capacitor module may also be a capacitor detection device that actually detects an insulating medium.
  • the first contact electrodes 41 and the second contact electrodes 42 on the printed circuit board 40 are respectively connected to the capacitance detection device 70 through wires 73 (equivalent to the first and second ends of the capacitance module).
  • the capacitance detection device 70 includes two opposite electrodes 71, and between the electrode pairs 71, a substantially constant amount of insulating medium is filled. Therefore, in general, the capacitance value detected by the printer through the first contact electrode 41 and the second contact electrode 42 is fixed (tolerance and error factors are excluded).
  • the insulating medium can be carbon powder, or a substance with other dielectric constants.
  • the capacitance detection device set in this way can be installed on the toner cartridge as an independent module.
  • a relatively closed chamber is set on the toner cartridge, and the quantity of the toner contained therein is fixed.
  • the detection electrodes the pair of detection electrodes is equivalent to the electrode 71 in FIG. 11
  • the carbon powder contained in the chamber is equivalent to the insulating medium 72 , which can also play an effect equivalent to that of a chip capacitor and a plug-in capacitor.
  • the detection electrode can be selected and manufactured according to the withstand voltage requirements, and there will be no problems such as breakdown of components such as chip capacitors and plug-in capacitors due to low withstand voltage values. If the insulating medium in the capacitance detection device 70 is not absolutely sealed, and its electrical characteristics are similar to the temperature and humidity of the toner cartridge, it can reflect the same changes as the environmental conditions when the printer detects, and it can be better It meets the testing requirements of printers, and has better environmental synchronization and matching than capacitive components.
  • the detection electrodes in the capacitance detection device 70 are wound into coils, which can also constitute electrode pairs for detecting capacitance to an insulating medium (not shown in the figure).
  • FIG. 13 shows an embodiment in which the capacitor body 32 is disposed on the second surface opposite to the first surface where the first contact electrode 41 is located.
  • the first contact electrodes 41 are electrically connected to the pins 31 on the second side of the printed circuit board 40 through the conductive through holes 43 , and the pins 31 are soldered to the through holes 43 at the solder joints 33 .
  • the detection bias applied by the printer to the toner cartridge in addition to detecting the capacitance value of the toner in the toner cartridge, is also used to assist imaging, for example, applying the detection bias to the developing roller or the magnetic roller superior.
  • the surface on which the first contact electrodes are located on the printed circuit board is the first surface, and the opposite surface opposite to the first surface is the second surface.
  • the second surface may further include a first conductive region at a position opposite to the first contact electrode, and the first conductive region is electrically connected to the first contact electrode. It is also possible to provide double-sided conductive areas on the printed circuit board, the first side for electrical contact with the printer's contacts/probes, and the second side for contact with components in the toner cartridge (such as the developer roller). or magnetic roller) electrical contact.
  • a mounting portion for example, a first, second or third printed circuit board (10, 20, 40, 70) for mounting
  • the first, second or third printed circuit boards can be fixed to the installation site by means of snaps, glues or soldering.
  • the installation site may also include conductive material (such as conductive steel sheet, resin sheet, etc.).
  • conductive material such as conductive steel sheet, resin sheet, etc.
  • the above-mentioned printed circuit board may be a rigid circuit board, a flexible circuit board, or a composite board in which a flexible board and a rigid board are combined, which is not limited unless explicitly stated.
  • the capacitor module can also be other capacitors, such as tantalum capacitors.
  • the toner cartridge of the present invention may also include a consumable chip, which stores information about the toner cartridge, such as the remaining amount of toner, manufacturer, serial number, production date, place of origin, authentication password and other information.
  • the consumable chip can record information about the usage of the toner cartridge and provide the printer with information about the identification of the toner cartridge.

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Abstract

一种碳粉盒（100），涉及打印成像领域，碳粉盒（100）包括：电容模块（30），第一接触电极（41）以及第二接触电极（42）。其中，电容模块（30）的电容值固定；第一接触电极（41）以及第二接触电极（42）设置在电路板（40）上；电容模块（30）的第一端连接第一接触电极（41），电容模块（30）的第二端连接第二接触电极（42）。第一接触电极（41）用于接收打印机发送的检测电压，第二接触电极（42）用于输出与检测电压对应的感应电压。该方案无需在碳粉盒（100）内设置真实的碳粉数量检测机构，打印机检测的结果不会产生忽高忽低和突变的情况。并且，将第一接触电极（41）和第二接触电极（42）设置在电路板（40）上，可以增强接触电极（41、42）的稳定性，使其不易脱落；同时可使得接触电极（41、42）与电容模块（30）之间的电连接更为牢固。

Description

一种碳粉盒
本申请要求于2021年2月8日提交中国专利局、申请号为202110170389.4、申请名称为“一种碳粉盒”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及打印成像领域，特别地，本发明涉及一种碳粉盒及其碳粉余量检测系统。
背景技术
打印机(例如喷墨打印机、激光打印机、多功能一体机等等)在打印过程中，需要如墨盒、粉筒和硒鼓之类的打印耗材，其中，墨盒中容纳有墨水，粉筒、硒鼓中容纳有碳粉。这些打印耗材相比打印机具有更短的寿命，因此在使用过程中，需要对这些打印耗材的使用寿命进行监测，也需要用户在用完后经常性的购买和更换打印耗材。
其中一种打印耗材是碳粉盒(如中国专利申请CN201010142920.9)，碳粉盒包括粉仓和废粉仓，设置在粉仓内的显影部件、容纳在粉仓中的碳粉，以及在废粉仓上的感光鼓等配件。同时，为了检测粉仓内的碳粉余量，碳粉盒内还会有碳粉余量检测系统，通过在粉仓内部设置有检测部件，然后检测显影部件与检测部件之间的电信号，来确定粉仓内的碳粉余量。然而这样的碳粉余量检测系统，需要在碳粉盒内设置复杂的电路结构和机械结构，以满足打印机的检测需要。这些复杂的结构不仅增加了碳粉盒的制造成本，由于碳粉盒中的碳粉并非一直保持均匀分布，此外机械结构也难以确保精准装配，因此检测结果可能不是理想的，存在忽高忽低或者突变的情况，导致打印机认为碳粉盒异常,引发用户无法继续打印等问题。同时，由于检测部件与显影部件较难实现精准的安装和固定，因此，难以保证二者之间形成稳定的电信号。
发明内容
为解决上述技术问题，本发明提供了一种碳粉盒，包括：
电容模块，第一接触电极以及第二接触电极；其中，所述电容模块的电容值固定；所述第一接触电极以及所述第二接触电极设置在电路板上；所述电容模块的第一端连接所述第一接触电极，所述电容模块的第二端连接所述第二接触电极；所述第一接触电极用于接收打印机发送的检测电压，所述第二接触电极用于输出与所述检测电压对应的感应电压。
其中一种可能的实现方式中，所述第一接触电极以及所述第二接触电极设置在所述电路板的第一面。
其中一种可能的实现方式中，所述第一接触电极设置在第一印刷电路板上，所述第二接触电极设置在第二印刷电路板上。
其中一种可能的实现方式中，所述第一接触电极以及所述第二接触电极均设置在第三印刷电路板上。
其中一种可能的实现方式中，所述电容模块设置在所述电路板的第二面。
其中一种可能的实现方式中，所述电容模块设置在所述第一印刷电路板上，或者，所述电容模块设置在所述第二印刷电路板上。
其中一种可能的实现方式中，所述电容模块设置在第三印刷电路板上。
其中一种可能的实现方式中，所述电路板的第二面包括第一导电区域，所述第一导电区域与位于所述第一面的所述第一接触电极连接。
其中一种可能的实现方式中，所述碳粉盒还包括：显影辊，或磁辊；所述显影辊，或所述磁辊与所述第一导电区域连接。
其中一种可能的实现方式中，所述电容模块为电容检测装置；所述电容检测装置包括两个相对的电极，所述两个相对的电极之间填充有绝缘介质。
其中一种可能的实现方式中，所述两个相对的电极为线圈。
其中一种可能的实现方式中，所述电容模块为插件电容，所述插件电容包括电容本体；所述电容本体凸出所述电路板的高度小于10毫米。
其中一种可能的实现方式中，所述插件电容还包括引脚；所述引脚弯折，使得所述电容本体位于所述电路板平面外。
其中一种可能的实现方式中，所述碳粉盒还包括：安装部位；所述安装部位与所述电路板之间的固定方式包括：卡扣方式，或者黏贴方式，或者焊接方式。
通过本发明提供的方案，无需在碳粉盒内设置真实的碳粉数量检测机构，打印机检测的结果不会产生忽高忽低和突变的情况。并且，将第一接触电极和第二接触电极设置在电路板上，可以增强接触电极的稳定性，使其不易脱落；同时可使得接触电极与电容模块之间的电连接更为牢固。
附图说明
为了更清楚地说明本申请实施例的技术方案，下面将对实施例中所需要使用的附图作简单地介绍，应当理解，以下附图仅示出了本申请的某些实施例，因此不应被看作是对范围的限定，对于本领域普通技术人员来讲，在不付出创造性劳动的前提下，还可以根据这些附图获得其他相关的附图。
图1为本发明实施例的电容模块与印刷电路之间的电连接框图。
图2为本发明实施例的电容模块与印刷电路之间的另一种电连接框图。
图3为本发明实施例的电容模块与印刷电路之间的等效电连接框图。
图4为本发明实施例的电容模块为贴片电容时的电连接框图。
图5为本发明实施例的电容模块设置在其中一个印刷电路板的电连接框图。
图6为本发明实施例的电容模块独立设置在印刷电路板的电连接框图。
图7为本发明实施例的电容模块设置在印刷电路板上的立体视图。
图8为本发明实施例的电容模块设置在印刷电路板上的侧视图。
图9为本发明实施例的电容模块设置在印刷电路板之外的视图。
图10为本发明实施例的电容模块设置在印刷电路板之外的侧视图。
图11为本发明实施例的电容模块为电容检测装置时的电连接框图。
图12为本发明实施例的电容检测装置的电极为线圈时的电连接框图。
图13为本发明实施例的印刷电路板第一面的电连接框图。
图14为本发明实施例的印刷电路板第二面的电连接框图。
图15为根据本申请的碳粉盒的立体视图。
图16为图15中A处的放大视图。
图17为根据本发明的碳粉盒去除端盖后的粉仓部分的立体视图。
图18为本发明实施例的碳粉盒及电容模块的电连接框图。
具体实施方式
下面将结合本申请实施例中的附图，对本申请实施例中的技术方案进行清楚、完整地描述，显然，所描述的实施例仅仅是本申请一部分实施例，而不是全部的实施例。通常在此处附图中描述和示出的本申请实施例的组件可以以各种不同的配置来布置和设计。因此，以下对在附图中提供的本申请的实施例的详细描述并非旨在限制要求保护的本申请的范围，而是仅仅表示本申请的选定实施例。基于本申请的实施例，本领域技术人员在没有做出创造性劳动的前提下所获得的所有其他实施例，都属于本申请保护的范围。
应注意到：相似的标号和字母在下面的附图中表示类似项，因此，一旦某一项在一个附图中被定义，则在随后的附图中不需要对其进行进一步定义和解释。
碳粉盒是一种可更换的打印耗材，以可拆卸的方式安装在打印机中。如图15至图17所示是本发明实施例的一种碳粉盒的结构视图，碳粉盒100包括：粉仓110、废粉仓120和端盖130。其中，端盖130位于碳粉盒长度方向上的端部，与粉仓和/或废粉仓相连接。粉仓110具有壳体和由壁面围绕构成的容纳空间。在粉仓中设置有显影部件111，以及粉仓110的容纳空间内部还储存有用于显影的显影剂(显影剂的一个例子为碳粉)。显影部件111可以为显影辊或磁辊，其两端架设在粉仓两端的侧壁面112上，使显影部件111能够旋转工作。
碳粉盒100还包括有电容模块(例如图中的电容140)、第一电接触部150，以及第二电接触部160。第一电接触部150和第二电接触部160可以为导电钢片、导电树脂件、导电丝等具有导电功能的构件。用以与打印机中相关的电触点/探针形成电连接，以接收来自打印机的电信号或检测信号等。第一电接触部150和第二电接触部160分别固定在端盖或者粉仓等碳粉盒上与打印机中相关电触点/探针相对应的位置处，可不做特别限定，在本申请中第一电接触部150和第二电接触部160均设置在端盖130的朝向碳粉盒底部的面上。
其中，第一电接触部150能够与显影部件111和电容140的第一端141(第一引脚)相接触(如焊接、黏贴)以形成电连接。在一种实施例中，第一电接触部150通过翻折的钢片结构接触显影部件111的磁芯轴端(当触显影部件111为磁辊时)或者轴芯的轴端(当触显影部件111为显影辊时)，使自第一电接触部150接收到的电压传导至触显影部 件111上。第二电接触部160与电容140的第二端142(第二引脚)相接触(如焊接、黏贴)以形成电连接，所述电容140的第一端和第二端可以通过以导电线、导电钢片等形式自电容140本体延伸而出，用于将电容140与其它元器件形成电连接。
在现有技术中，第二电接触部160与设置在粉仓内的导电构件(例如导电钢片/导电铁片/导电树脂片/导电金属丝)相接触，因此在显影部件111与导电构件之间形成一对的两个等效电极。碳粉盒内容纳的碳粉数量的变化，可以影响两个等效电极之间的电容值。因此，可以检测这两个等效电极之间的电容，从而得知容纳在粉仓中的碳粉数量。在打印机检测容纳在碳粉盒100中的碳粉的剩余数量/消耗数量时，打印机的电信号源向第一电接触部150施加偏压(此时电连接到第一电接触部150的显影部件111也可以接收到施加的偏压)，打印机的检测器通过与第二电接触部160电连接以检测粉仓内的导电构件的电信号。因此可以根据在第二电接触部160检测到的电信号，换算出粉仓内的碳粉数量。然而就如背景技术提及的，碳粉盒在运输、使用时，会挪动、抖动容纳在碳粉盒中的碳粉，若在显影部件111与导电构件之间的碳粉并非均匀分布，则打印机的检测器在第二电接触部160检测到电信号，有可能不能准确反映碳粉盒中的碳粉数量。例如出现碳粉数量忽高忽低、突变等异常情况，导致用户不能正常使用碳粉盒。而且设置在粉仓内的导电构件需要较大的面积、长度和体积才能与显影部件111形成性能稳定的等效电容，这还需要较精准的安装和固定，这些要求无疑增加了导电构件的物料成本和碳粉盒的制造成本。
本发明为了解决以上问题，一方面在碳粉盒上设置电容值固定的电容模块，以替代设置在粉仓内的等效电容，从而无需在粉仓内安装用于检测实际碳粉数量的导电构件。这种方案下，打印机检测到的是额外安装的电容模块，不是碳粉盒内真实的碳粉的静电容值，该电容值固定的电容模块，可以具有表示碳粉数量充足的静电容值。电容模块的电容值虽然始终固定，但打印机仍能获得碳粉即将用尽的信息。具体的，打印机可以通过以下两个条件判断碳粉是否用尽。
条件一，通过软件估算出碳粉余量。
可预先设定打印页数门限，例如可以是1000页。即，打印1000页后，认为碳粉用尽。基于此种方式，当打印机记录的打印页数达到1000页时，打印机认为碳粉用尽。
在标准打印页中，碳粉覆盖率为页面的5％，但实际打印场景中，每张纸可能打印的字数很少，因此，即使此时打印机认为碳粉用尽，但实际上可能仍有残余碳粉可用。
基于上述说明，本申请还可以进一步设定页数溢出门限。页数溢出门限例如可以是20％。当打印机确定打印页数达到打印页数门限时，可进一步判断多打印的页数是否超出了页数溢出门限。如果没有，则可继续执行打印操作；否则，确定无法继续打印。
条件二，通过电容模块反馈的电容值得出碳粉余量。
以预先设定打印页数门限1000、页数溢出门限为20％为例，打印页数达到1000后，打印机可进一步打印的页数余量1000*20％＝200。当打印页数超过1000页时，虽然此时已满足条件一打印页数门限的判断准则，但是打印机会优先考虑条件二。也就是说，如果电容模块的电容值是固定的，就会给打印机一种“碳粉余量充足”的虚假信号。接着，打印 机会继续打印。假设当打印页数达到1200页时，由于此时超出了页数溢出门限，因此打印机会认为该电容模块出现故障。此时，打印机确定无法继续打印。
因此，本方案通过固定电容值的电容模块，始终给打印机一种“碳粉余量充足”的虚假信号，但是该虚假信号不影响打印机以条件一为基准判断碳粉余量。
另一方面，本发明还考虑解决电容模块与打印机的电连接不良的问题。
可以理解地，电容140的第一端、第二端可以直接作为第一、第二电接触部，即直接利用电容140的第一、第二端(引脚)以接收、输出如电压、电流等电信号，并完成对电容140的电连接。然而，如图16所示的将电容140夹持、黏贴或者焊接到导电钢片、导电树脂制造的第一电接触部150和第二电接触部160时，在导电钢片和导电树脂上难以焊接电容的引脚，因为钢片和树脂是不沾锡的；至于夹持和黏贴的方式，在碳粉盒抖动时，电容140的引脚容易在第一、第二电接触部上松动，使得电容140与第一、第二电接触部接触不良，从而导致电容模块与打印机的电连接/电传导不良。即使将电容140的第一、第二端(引脚)充当第一、第二电接触部，也存在第一、第二电接触部的面积过小、电容引脚容易松动、电容难以固定等问题。因此本发明申请也考虑解决此类问题。
关于电容140的具体设置位置，可以将电容140设置在碳粉盒内，例如可以设置在端盖130与粉仓110之间。具体可以将电容140固定在侧壁面112上，或者固定在端盖130内侧，使得电容140从碳粉盒外部观察为不可见的状态。不仅有利于碳粉盒的美观，还能避免外部撞击等可能造成的电接触断离，并且防尘、防潮、避免出现电传导不良的现象。另外，也可以将电容140设置在碳粉盒外表面，例如可以伸出碳粉盒，设置于碳粉盒底部或者设置于端盖外表面上。图15中示出为将电容140设置在端盖的侧面上，只要不影响碳粉盒的安装和打印的工作即可。这样从外部即可直观识别出碳粉盒是否具有电容140，有利于碳粉盒的型号、性能等的快速识别，以及便于对电容更换维修，无需进行对端盖等相关零部件的拆卸操作。此外，无论电容140设置在碳粉盒内还是碳粉盒外，可利用其上引出的导电线(引脚)的折弯定型作用，搭置在碳粉盒的相关承载结构上。也可通过焊接、黏贴、卡合等方式，将电容140固定在碳粉盒的相关承载结构上。上述碳粉盒的相关承载结构可以是碳粉盒中的零部件，或粉仓、废粉仓、端盖的壳体注塑件等，还可以是可分离地设置在碳粉盒上的用于承载电容的支撑架，在此无需赘述。
电容还能够事先烧焊在电路板上，再采用上述各种安装方式设置在碳粉盒上。一种实施方式，是将焊接了电容的电路板设置在碳粉盒上，再通过导电线路连接到上述的第一电接触部150和第二电接触部160。另一种实施方式，可以是在电路板上设置上述第一电接触部150和第二电接触部160。具体可以是将第一电接触部150和第二电接触部160通过热压铜箔到电路板上，因此不容易脱落。并且，将第一电接触部150以及第二电接触部160设置在电路板上，能够起到方便焊接电容模块的技术效果。由于电容模块的引脚沾锡能力强，因此电容模块的引脚通过焊接的方式与第一电接触部150以及第二电接触部160连接，可使得电容模块不容易脱落，有利于形成稳定电连接。从而克服了电容模块与打印机的电连接不良、第一第二电接触部面积过小、电容引脚容易松动、电容难以固定等问题。下面将展开描述前述实施方式。
本发明的电容模块并不仅限用于图15-17所示的碳粉盒，还可以适用于其他能够被打印机检测其电容值的碳粉盒。例如，在一个实施例中，碳粉盒包括粉仓而没有废粉仓，在另一个实施例中，碳粉盒仅包括一个粉仓而没有废粉仓及显影部件111，在再一个实施例中，碳粉盒是一个筒状的碳粉容器。因此，本发明提供一种的碳粉盒，可以是至少包括如下特征的碳粉盒：
如图18示例性的提供一种碳粉盒组成框图，碳粉盒100包括壳体101，其为各种零部件组装而成，或者是注塑成型，可以由塑料、树脂等材料制造。在壳体101内形成容纳碳粉的腔室，其中碳粉在外部不可见，图中为虚线框内的碳粉102。碳粉盒100还包括电容模块30以及与电容模块30电连接的第一接触电极41和第二接触电极42。
第一接触电极41和第二接触电极42设置在壳体101上，其中，第一接触电极用于在与打印机中的相关触点/探针接触时，接收打印机发送的检测电压。第二接触电极用于在与打印机中的相关触点/探针接触时，所述打印机可以在第二接触电极检测到与检测电压对应的感应电压。第一接触电极接收检测电压，第二接触电极输出与检测电压对应的感应电压，因此第一接触电极与第二接触电极之间存在电容耦合，该电容耦合的容抗可以通过电容模块进行反馈，由于该容抗始终固定，因此，电容模块的电容值也始终固定。
电容模块30可以是贴片电容、插件电容(例如陶瓷电容)等具有额定电容值的元器件，也可以是由两个相对电极构成的等效电容。在一个优选实施例中，电容模块为电容值固定的模块。电容模块30与碳粉盒100中的实际碳粉数量没有实质关系，打印机通过电容模块30并不能检测碳粉盒100中碳粉102的实际数量。电容模块30的第一端电连接到第一接触电极41，电容模块30的第二端电连接到第二接触电极42。
为了克服背景技术中提到的问题，本发明实施例中，碳粉盒上用于与打印机电连接的接触电极，优先地设置在印刷电路板上，接触电极可以是铜箔。设置在印刷电路板上的接触电极，具有可批量生产、通过锡膏焊接时连接稳固、便于安装等优点。图1所示的是将连接电容模块的两个接触电极分别设置在不同的两个印刷电路板上的例子。图中，第一接触电极11设置在第一印刷电路板10上，第二接触电极21设置在第二印刷电路板20上，所述第一印刷电路板10通过电容模块(包括电容本体32和导电的引脚31)连接到所述第二印刷电路板20。引脚31可以用导电背胶黏贴到第一、第二接触电极上，也可以用锡膏、锡线焊接到第一、第二接触电极上，图中的黑点33表示焊接点。由于电容模块的导电引脚31是焊接到印刷电路板的第一、第二接触电极，其连接非常稳固，不容易出现松动的情况，固定印刷电路板10和20后电容模块也可以被固定，而且印刷电路板10和20可以是分开的，可以自由扭转及活动。因此第一、第二接触电极可以设置在不同的空间平面上，适应碳粉盒上不平整的表面，更好地与打印机连接。印刷电路板上的第一、第二接触电极的面积可以根据需要设置得更大，从而确认与打印机的电连接更方便和稳定。
现有技术中需要在碳粉盒中安装和设置检测实际碳粉数量的导电构件，当出现检测结果突变、忽高忽低的情况下，为解决这种问题，有可能需要拆除碳粉盒，清理碳粉盒中的碳粉、调整导电构件的形状和安装位置、更换存在被氧化等问题的导电构件，处理起来非常麻烦。而本发明中，若打印机的检测结果出现异常时，只需要更换或者修理第一印刷电 路板10、第二印刷电路板20或电容模块，无需拆开碳粉盒和重新组装。对第一印刷电路板10、第二印刷电路板20的修理，可以是重新焊接黑点33。若重新焊接后问题仍未解决，则可以拆除和更换电容模块。
在另一种实施例中，也可以将连接电容模块的两个接触电极，均设置在同一个印刷电路板上。如图2所示，所述第一接触电极41和第二接触电极42设置在第三印刷电路板40的同一面上。电容模块30的第一端通过焊接、黏贴的连接到第一接触电极41，第二端也可以通过焊接、黏贴的连接到第二接触电极42。将连接电容模块的两个接触电极，均设置在同一个印刷电路板上，对于制造成本和安装成本是有利的，尤其是碳粉盒上要求第一接触电极41在距离第二接触电极42较近的位置时。这种实施方式，更适合要求第一接触电极41和第二接触电极42处于同一水平面内时的碳粉盒。
对于要求第一接触电极41和第二接触电极42近似处于同一水平面的碳粉盒，第三印刷电路板40可以采用柔性材料制造，这时印刷电路板40为一柔性电路板，其可以根据安装的要求，安装后印刷电路板40以弯曲、弯折的形式安装在碳粉盒上。在另一种实施例中，针对这种情况，印刷电路板40也可以是硬质电路板，只需要在电路板的第一接触电极41和第二接触电极42之间，削薄电路板的厚度，使得印刷电路板40具备一定程度的可弯折性/挠性。
在另一个实施例中，第一、第二印刷电路板为硬质板，电容模块设置在一个柔性电路板上，而柔性电路板用于连接第一、第二印刷电路板。
图3所示是电容模块设置在印刷电路板40上时的等效电路图，电容模块用符号C表示。电容C的两个信号端分别连接设置在印刷电路板40上的第一接触电极41和第二接触电极42。
为了便于加工和生产，在将接触电极设置到印刷电路板上时，也可以考虑将电容模块设置在印刷电路板上。沿着图2描述的实施例，图4中的电容模块具体为一贴片电容50，其与第一接触电极41和第二接触电极42一起设置在同一个第三印刷电路板40上。由于贴片电容50的体积较小、占用面积小，在印刷电路板40的面积相对较大时，设置在印刷电路板40更有利于安装、维护以及更换。
当印刷电路板上的两个接触电极之间有较多的闲余面积时，可以将电容模块设置在于两个接触电极之间，也即电容模块和接触电极可以设置在印刷电路板的同一面上。图4中，贴片电容50设置在第一接触电极41和第二接触电极42之间，贴片电容50设置在与第一接触电极41在第三印刷电路板40上的相同的面上，该面可以定义为第一面；与之相对的第三印刷电路板40的反面，可以定义为第二面。将电容模块和接触电极均设置在印刷电路板的同一个面时，印刷电路板可以采用单面板，从而降低其制造成本。根据实际情况，电容模块也可以设置在第二面上，即电容模块设置在印刷电路板上与两个接触电极不同的另一个面，这样有利于缩小印刷电路板的面积，例如在印刷电路板的第一面仅保留接触电极的面积，无需预留电容模块的位置。
电容模块为贴片电容时，承载接触电极的印刷电路板，还可以是图5和图6的形式。 在图5中，第一接触电极11和贴片电容50设置在第一印刷电路板10上，而第二接触电极21设置在第二印刷电路板20上，第一印刷电路板10和第二印刷电路板20通过导线60连接。与之类似的，也可以将贴片电容设置在第二印刷电路板20上而不是第一印刷电路板10上。
图6中，第一接触电极11、贴片电容50和第二接触电极21分别设置在不同的三个印刷电路板上，即第一接触电极11设置在印刷电路板10上，贴片电容50设置在印刷电路板70上，第二接触电极21设置在印刷电路板20上。三者之间通过导线60电连接在一起，使得贴片电容50的第一端电连接第一接触电极11，第二端电连接第二接触电极21。
分开用两个不同的板来放置不同的接触电极，可以灵活地适应第一接触电极和第二接触电极距离较远、处于不同空间水平面的情况。而将电容模块设置在印刷电路板上，例如图6的例子，有利于批量生产和固定贴片电容50。
将电容设置在印刷电路板上时，需要考虑电容模块的尺寸对碳粉盒的影响，例如图7所示的电容模块30安装在印刷电路板40上的立体视图中，电容模块30相对突出印刷电路板40的表面较高，可能会导致安装的问题。因此，较佳的方式是，令电容模块的体积较小和高度较低是相对有利的。图8所示的实施例中，电容模块为插件电容，其包括电容本体32和引脚31，电容本体32设置在与接触电极41、42相同的同一面(第一面)上，为了降低电容本体32突出印刷电路板40的高度，引脚31基本上插入印刷电路板40的过孔中以焊接固定，露出来的引脚31较短或者没有露出来。在这种情况下，电容模块凸出所述第一面的高度小于10毫米，能够避免印刷电路板40对碳粉盒的影响。在另外的实施例中，电容本体32也可以设置在不与接触电极41、42相同的另一面(例如第二面)。
为了降低电容模块凸起高度对碳粉盒的影响，本发明还提供了其他的实施方案。如图9和图10所示，电容模块30的正投影处于印刷电路板40之外，因此印刷电路板40的第一接触电极41和第二接触电极42所在的第一面基本是平的。图10中示出了一种将电容模块的引脚31近似90度弯折，使得电容本体32放置在印刷电路板40之外，这种仅突出印刷电路板40一点高度的实施方式，有效降低了电容模块的高度对碳粉盒的影响。
以上以插件电容、贴片电容为例描述了电容模块,电容模块还可以是实际检测绝缘介质的电容检测装置。如图11所示，印刷电路板40上的第一接触电极41和第二接触电极42分别通过导线73(相当于电容模块的第一端、第二端)连接到电容检测装置70。电容检测装置70中包括两个相对的电极71，在电极对71之间，填充有数量基本不变的绝缘介质。因此在一般情况下，打印机通过第一接触电极41和第二接触电极42检测到的电容值是固定的(剔除公差、误差因素)。绝缘介质可以是碳粉，或者具有其他介电常数的物质。为了避免打印机检测的电容值忽高忽低、跳变，其容纳的绝缘介质的数量，不会随着碳粉盒的使用而改变。这样设置的电容检测装置，可以作为一个独立的模块安装在碳粉盒上，例如在碳粉盒上设置一个相对封闭的腔室，其容纳的碳粉数量是固定的，在这个腔室内设置一对检测电极，这对检测电极相当于图11中的电极71，腔室内容纳的碳粉相当于绝缘介质72，也能起到等效与贴片电容、插件电容的效果。而且，检测电极可以根据耐压需要选材和制造，不会出现贴片电容、插件电容这些元器件因为耐压值不高出现的击穿等 问题。如果电容检测装置70内的绝缘介质不会绝对的密封，其电学特性与碳粉盒所处的温度、湿度等环节相似，在打印机检测时，可以体现出与环境条件相同的变化，能够更好满足打印机的检测要求，相比于电容元器件的环境同步性、匹配性更好。
图12所示的是将电容检测装置70中的检测电极绕制为线圈，也能构成对绝缘介质(图中未示出)检测电容的电极对。
图13所示是将电容本体32设置在于第一接触电极41所在的第一面相反的第二面上的实施例。第一接触电极41通过导电的通孔43，电连接到处于印刷电路板40的第二面的引脚31上，引脚31在焊接点33处焊接到通孔43。
在一些实施例中，打印机向碳粉盒施加的检测偏压，除了用于检测碳粉盒内的碳粉的电容值，还用于辅助成像，例如将检测偏压施加到显影辊或磁辊上。为此，在承载第一接触电极的印刷电路板上，还需要考虑将该电信号引导到显影辊或磁辊上。在一个实施例中，印刷电路板上第一接触电极所在的面为第一面，与第一面相对的反面是第二面。在第二面上与第一接触电极相对的位置，还可以包括第一导电区域，该第一导电区域与第一接触电极电连接。也可以在印刷电路板上设置双面导电的区域，在第一面用于与打印机的触点/探针电接触，在其第二面用于与碳粉盒内的零部件(例如显影辊或磁辊)电接触。
接下来，结合图15至图17讨论如何在碳粉盒上安装前述的印刷电路板10、20、40、70。例如，在图16的第一电接触部150和第二电接触部160的位置，设置有安装第一、第二或者第三印刷电路板(10、20、40、70)的安装部位(例如挖低为凹坑、凹槽)，这些第一、第二或者第三印刷电路板可以通过卡扣、黏贴或者焊接的方式固定到安装部位处。
在考虑到需要将第一接触电极的信号引导到碳粉盒的其他零部件(例如显影辊或磁辊)，安装部位处还可以包括导电材料(例如导电的钢片、树脂片等)。当前述的印刷电路板安装到碳粉盒上时，导电材料与印刷电路板背面(即第二面)的第一导电区域电连接。
在本发明中，上述的印刷电路板可以是硬质电路板，也可以是柔性电路板，也可以软板和硬板结合的复合板，对此若没有明确说明，则不作限制。电容模块除了可以贴片电容、陶瓷电容外，还可以是其他电容，例如钽电容等。
本发明的碳粉盒上，还可以包括一耗材芯片，其存储有关碳粉盒的信息，例如碳粉剩余量、制造商、序列号、生产日期、产地、认证密码等信息，当碳粉盒安装在打印机中时，耗材芯片可以记录碳粉盒的使用情况信息，以及向打印机提供碳粉盒的身份证明的信息。
以上所述仅为本申请的优选实施例而已，并不用于限制本申请，对于本领域的技术人员来说，本申请可以有各种更改和变化。凡在本申请的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本申请的保护范围之内。

Claims (14)

  1. 一种碳粉盒，其特征在于，包括：
    电容模块，第一接触电极以及第二接触电极；
    其中，所述电容模块的电容值固定；所述第一接触电极以及所述第二接触电极设置在电路板上；所述电容模块的第一端连接所述第一接触电极，所述电容模块的第二端连接所述第二接触电极；
    所述第一接触电极用于接收打印机发送的检测电压，所述第二接触电极用于输出与所述检测电压对应的感应电压。
  2. 根据权利要求1所述的碳粉盒，其特征在于，所述第一接触电极以及所述第二接触电极设置在所述电路板的第一面。
  3. 根据权利要求1所述的碳粉盒，其特征在于，所述第一接触电极设置在第一印刷电路板上，所述第二接触电极设置在第二印刷电路板上。
  4. 根据权利要求1所述的碳粉盒，其特征在于，所述第一接触电极以及所述第二接触电极均设置在第三印刷电路板上。
  5. 根据权利要求2所述的碳粉盒，其特征在于，所述电容模块设置在所述电路板的第二面。
  6. 根据权利要求3所述的碳粉盒，其特征在于，所述电容模块设置在所述第一印刷电路板上，或者，所述电容模块设置在所述第二印刷电路板上。
  7. 根据权利要求3或4所述的碳粉盒，其特征在于，所述电容模块设置在第三印刷电路板上。
  8. 根据权利要求5所述的碳粉盒，其特征在于，所述电路板的第二面包括第一导电区域，所述第一导电区域与位于所述第一面的所述第一接触电极连接。
  9. 根据权利要求8所述的碳粉盒，其特征在于，所述碳粉盒还包括：
    显影辊，或磁辊；
    所述显影辊，或所述磁辊与所述第一导电区域连接。
  10. 根据权利要求1所述的碳粉盒，其特征在于，所述电容模块为电容检测装置；所述电容检测装置包括两个相对的电极，所述两个相对的电极之间填充有绝缘介质。
  11. 根据权利要求10所述的碳粉盒，其特征在于，所述两个相对的电极为线圈。
  12. 根据权利要求1所述的碳粉盒，其特征在于，所述电容模块为插件电容，所述插件电容包括电容本体；所述电容本体凸出所述电路板的高度小于10毫米。
  13. 根据权利要求12所述的碳粉盒，其特征在于，所述插件电容还包括引脚；所述引脚弯折，使得所述电容本体位于所述电路板平面外。
  14. 根据权利要求1所述的碳粉盒，其特征在于，所述碳粉盒还包括：
    安装部位；
    所述安装部位与所述电路板之间的固定方式包括：卡扣方式，或者黏贴方式，或者焊接方式。
PCT/CN2022/073931 2021-02-08 2022-01-26 一种碳粉盒 WO2022166697A1 (zh)

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