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CN-116661280-B - Process cartridge, image forming apparatus, and detection method

CN116661280BCN 116661280 BCN116661280 BCN 116661280BCN-116661280-B

Abstract

The application relates to a processing box, an image forming device and a detection method, wherein the processing box comprises a box body and a discharge screw, the box body is provided with a first accommodating bin and a second accommodating bin, the first accommodating bin is communicated with the second accommodating bin, a magnetic detection element is arranged on the box body, at least part of the discharge screw is positioned in the first accommodating bin, the discharge screw can rotate to discharge waste toner in the first accommodating bin to the second accommodating bin, and a magnetic element is arranged on the discharge screw, wherein the magnetic detection element can detect the magnetic element and can send out a signal when detecting the magnetic element, and the signal sent out by the magnetic detection element changes along with the content of the waste toner in the first accommodating bin. In the application, the condition of the waste toner content in the first accommodating bin can be obtained through the signal output by the magnetic detection element, so that whether the waste toner needs to be cleaned can be judged, and the waste toner in the first accommodating bin is prevented from being excessive, the rotation of the discharge screw is prevented, and the photosensitive drum is damaged.

Inventors

  • CHEN FENG

Assignees

  • 珠海奔图电子有限公司

Dates

Publication Date
20260505
Application Date
20230601

Claims (10)

  1. 1.A process cartridge detachably mountable to a main assembly of an image forming apparatus, wherein the process cartridge (6) includes: the box body is provided with a first accommodating bin (61) and a second accommodating bin (62), the first accommodating bin (61) is communicated with the second accommodating bin (62), and a magnetic detection element (64) is arranged on the box body; a discharge screw (2), at least part of the discharge screw (2) being located in the first housing chamber (61), the discharge screw (2) being rotatable to discharge waste toner in the first housing chamber (61) to the second housing chamber (62), the discharge screw (2) being provided with a magnetic element (21); Wherein the magnetic detection element (64) can form a magnetic field around the magnetic detection element, the magnetic element (21) cuts a magnetic induction line of the magnetic field along with the movement of the discharge screw (2), so that the magnetic detection element (64) can detect the magnetic element (21) and can emit a signal when detecting the magnetic element (21), the signal output by the magnetic detection element (64) periodically changes, and the peak value of the signal emitted by the magnetic detection element (64) changes along with the content of waste toner in the first accommodating bin (61).
  2. 2. A cartridge according to claim 1, wherein the magnetic member (21) is provided at an end of the discharge screw (2) near the second housing chamber (62).
  3. 3. A process cartridge according to claim 1, wherein said magnetic member (21) is of a sheet-like structure, and said magnetic member (21) of a sheet shape is fixed to a surface of said discharge screw (2).
  4. 4. A cartridge according to claim 1, wherein the cartridge (6) comprises a sleeve (23), the magnetic element (21) being arranged on the sleeve (23), the sleeve (23) being sleeved on the end of the discharge screw (2).
  5. 5. A process cartridge according to claim 1, wherein said process cartridge (6) comprises a photosensitive drum (1), a first gear (3) is provided at an end of said photosensitive drum (1), a second gear (22) is provided at an end of said discharge screw (2), and said first gear (3) is capable of rotating said second gear (22); The processing box (6) further comprises a transmission gear (4), the transmission gear (4) is meshed with the first gear (3) and the second gear (22), and the first gear (3) drives the second gear (22) to rotate through the transmission gear (4).
  6. 6. A process cartridge according to any one of claims 1 to 5, wherein said magnetic detecting element (64) is provided on a side wall of said first housing compartment (61) or a side wall of said second housing compartment (62); Or, the magnetic detection element (64) is provided to the body of the image forming apparatus.
  7. 7. An image forming apparatus, characterized in that the image forming apparatus (100) includes a main body and the process cartridge (6) according to any one of claims 1 to 6.
  8. 8. A detection method for detecting the process cartridge (6) according to any one of claims 1 to 6, the process cartridge (6) including a photosensitive drum (1), the detection method comprising: judging whether the peak value of the signal output by the magnetic detection element (64) is smaller than a first preset value; if yes, judging that the waste toner in the first accommodating bin (61) and the second accommodating bin (62) of the processing box (6) is full; If not, it is determined that the waste toner in the first housing chamber (61) and/or the second housing chamber (62) of the process cartridge (6) is not full.
  9. 9. The detection method according to claim 8, wherein when a ratio of a volume of the waste toner occupying the first housing chamber (61) to a volume of the first housing chamber (61) is greater than a second preset value a, a peak value of the output signal of the magnetic detection element (64) is smaller than the first preset value, the second preset value a satisfies that 0.3≤a≤0.9.
  10. 10. The detection method according to claim 9, wherein the detection signal of the magnetic detection element (64) is periodically changed, and whether or not the rotation of the photosensitive drum (1) and the discharge screw (2) is abnormal is determined based on the periodically changed detection signal.

Description

Process cartridge, image forming apparatus, and detection method Technical Field The present application relates to the field of printing technology, and more particularly, to a process cartridge, an image forming apparatus, and a detection method. Background The process cartridge is a printing consumable necessary for a laser printer, and includes a drum assembly and a cleaning blade capable of scraping off waste toner on the drum assembly into a first housing compartment of the process cartridge, and a screw in the first housing compartment transports the waste toner into a second housing compartment of the process cartridge through a waste toner discharge port by rotation. When the second accommodation chamber is filled with the waste toner to cause the waste toner to accumulate at the waste toner discharge port or the waste toner to accumulate at the waste toner discharge port for other reasons, the waste toner may hinder the rotation of the screw. Since the screw is rotated by the drive of the drum assembly, the waste toner hinders the rotation of the screw and thus the drum assembly is extremely fragile. Disclosure of Invention The application provides a process cartridge, an image forming apparatus and a detecting method, which can solve the problem that the waste toner is accumulated to prevent the rotation of a discharge screw and damage a drum assembly by detecting the content of the waste toner in a first accommodating bin. The processing box comprises a box body and a discharge screw, wherein the box body is provided with a first accommodating bin and a second accommodating bin, the first accommodating bin is communicated with the second accommodating bin, a magnetic detection element is arranged on the box body, at least part of the discharge screw is located in the first accommodating bin, the discharge screw can rotate to discharge waste toner in the first accommodating bin to the second accommodating bin, and a magnetic element is arranged on the discharge screw, wherein the magnetic detection element can detect the magnetic element and can send out a signal when detecting the magnetic element, and the signal sent out by the magnetic detection element changes along with the content of the waste toner in the first accommodating bin. In one possible design, the magnetic element is arranged at the end of the discharge screw close to the second receiving compartment. In one possible design, the magnetic element is a sheet-like structure, the sheet-like magnetic element being fixed to the surface of the discharge screw. In one possible design, the process cartridge includes a sleeve on which the magnetic element is disposed, the sleeve being sleeved on the end of the discharge screw. In one possible design, the processing box comprises a photosensitive drum, a first gear is arranged at the end part of the photosensitive drum, a second gear is arranged at the end part of the discharge screw, the first gear can drive the second gear to rotate, and the processing box further comprises a transmission gear, the transmission gear is meshed with the first gear and the second gear, and the first gear drives the second gear to rotate through the transmission gear. In one possible design, the magnetic detection element is disposed on a side wall of the first housing chamber or a side wall of the second housing chamber, or the magnetic detection element is disposed on a body of the image forming apparatus. An image forming apparatus according to an embodiment of the present application includes a main body and the above-described process cartridge. The detection method provided by the embodiment of the application is used for detecting the processing box, wherein the processing box comprises a photosensitive drum, and the detection method comprises the following steps: judging whether the peak value of the signal output by the magnetic detection element is smaller than a first preset value; If yes, judging that waste toner in the first accommodating bin and the second accommodating bin of the processing box is full; if not, judging that the waste toner in the first accommodating bin and/or the second accommodating bin of the processing box is not full. In one possible design, when the ratio of the volume of the waste toner occupying the first accommodation chamber to the volume of the first accommodation chamber is greater than a second preset value a, the peak value of the magnetic detection element output signal is smaller than the first preset value, and the second preset value a satisfies that 0.3≤a≤0.9. In one possible design, the detection signal of the magnetic detection element is periodically changed, and whether the rotation of the photosensitive drum and the discharge screw is abnormal is judged according to the periodically changed detection signal. In the present application, the magnetic element rotates with the discharge screw, and thus the magnetic element periodically approaches or moves aw