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CN-117891150-B - Control method of image forming device and related equipment

CN117891150BCN 117891150 BCN117891150 BCN 117891150BCN-117891150-B

Abstract

The present invention relates to the field of image forming apparatuses, and more particularly, to a control method of an image forming apparatus and related devices. The image forming apparatus includes a plurality of image carriers each for carrying an electrostatic latent image and forming a toner image by toner development, a primary transfer member configured to be able to abut against or separate from the image carriers to receive the toner image on the image carriers, an intermediate transfer member for abutting against the image carriers to transfer the toner image on the image carriers to the intermediate transfer member, a first driving member for driving the primary transfer member to move so that the intermediate transfer member is switched between abutting against and separating from the image carriers, and a control unit for controlling the primary transfer member to drive the intermediate transfer member to abut against the image carriers when power supply to the developing member corresponding to the image carriers by the developing charging member is turned on.

Inventors

  • BU FUWEI
  • GONG HAIFEI

Assignees

  • 珠海奔图电子有限公司

Dates

Publication Date
20260508
Application Date
20240105

Claims (13)

  1. 1. An image forming apparatus comprising: a plurality of image carriers each for carrying an electrostatic latent image formed into a toner image by developing a toner of a single color; a plurality of chargers for charging surfaces of the plurality of image carriers; A plurality of developing members for supplying the toner of the single color to each of the image carriers; a developing charging member for supplying power to a plurality of the developing members, respectively; an intermediate transfer body configured to be abutted against or separated from at least one of the image carriers to receive a toner image on the at least one image carrier; a primary transfer member for abutting the intermediate transfer body against at least one image carrier to transfer the toner image on the at least one image carrier onto the intermediate transfer body; A secondary transfer member for transferring the toner image on the intermediate transfer body onto a transfer material; a first driving member for driving the primary transfer member to move, driving the intermediate transfer body to switch in a state of abutting and separating from the at least one image carrier; And a control unit configured to control the primary transfer member to drive the intermediate transfer member to abut against the at least one image carrier when power supply to the developing member corresponding to the at least one image carrier is turned on based on the developing charging member.
  2. 2. The image forming apparatus according to claim 1, further comprising a charge removing member for removing the charge from the transfer material by applying a charge removing bias; The control unit is further configured to control the primary transfer member to drive the intermediate transfer body to be separated from the at least one image carrier based on closing of the charge removing bias of the charge removing member.
  3. 3. The image forming apparatus according to claim 2, wherein the plurality of image carriers includes a first image carrier and at least one second image carrier.
  4. 4. An image forming apparatus according to claim 3, wherein the control unit is specifically configured to: When performing black-and-white image forming operation, controlling the primary transfer member to drive the intermediate transfer member to abut against the first image carrier based on the opening of the developing voltage of the developing member corresponding to the first image carrier, or When a color image forming operation is performed, the primary transfer member is controlled to drive the intermediate transfer body to abut against the at least one second image carrier based on the opening of the developing voltage of the developing member corresponding to the at least one second image carrier.
  5. 5. The image forming apparatus according to claim 4, wherein the control unit is specifically configured to: controlling the primary transfer member to drive the intermediate transfer member to separate from the first image carrier based on closing of the charge removing bias of the charge removing member when performing a black-and-white image forming operation, or When a color image forming operation is performed, the primary transfer member is controlled to drive the intermediate transfer body to be separated from the at least one second image carrier based on the closing of the charge removing bias of the charge removing member.
  6. 6. The image forming apparatus according to any one of claims 3 to 5, wherein the first image carrier is a black image carrier, and the at least one second image carrier is at least one of a cyan image carrier, a magenta image carrier, and a yellow image carrier.
  7. 7. A control method of an image forming apparatus, applied to the image forming apparatus of claim 1, The control method comprises the following steps: and based on an image forming instruction, when the power supply of the developing charging component to the developing component corresponding to the at least one image carrier is controlled to be started, the first driving component is driven so that the primary transfer component drives the intermediate transfer body to be abutted against the at least one image carrier.
  8. 8. The control method according to claim 7, characterized in that the control method further comprises: and controlling the corresponding charger to charge the surface of the at least one image carrier before controlling the power supply of the developing charging component to the developing component corresponding to the at least one image carrier to be started based on the image forming instruction.
  9. 9. The control method according to claim 8, characterized in that the control method further comprises: controlling the charger to charge the surfaces of the plurality of image carriers based on an image forming instruction; the developing charging member applies developing voltages to the plurality of developing members and drives the first driving member so that the primary transfer member drives the intermediate transfer body to abut against the at least one image carrier; when the intermediate transfer body is pinched by the primary transfer member and the at least one image carrier, the first driving member is stopped, and the image transfer operation is continued.
  10. 10. The control method according to claim 7, wherein the image forming apparatus further includes a charge removing member, the control method further comprising: Transferring the toner image on the at least one image carrier onto the intermediate transfer body based on an image forming instruction; Driving the toner image on the intermediate transfer body to transfer onto a transfer material; providing a charge removing bias to the charge removing member to remove charge on a transfer material for carrying the toner image; after the charge is eliminated, the supply of the charge eliminating bias is stopped, and the first driving part is synchronously driven, so that the primary transfer part drives the intermediate transfer body to be separated from the at least one image carrier.
  11. 11. The control method according to claim 10, further comprising driving the first driving member so that the primary transfer member drives the intermediate transfer body away from all the image carriers based on a standby instruction of the image forming apparatus.
  12. 12. An electronic device, comprising: At least one processor, and At least one memory communicatively coupled to the processor, wherein: the memory stores program instructions executable by the processor, the processor invoking the program instructions to perform the control method of any of claims 7-11.
  13. 13. A computer-readable storage medium storing computer instructions that cause the computer to execute the control method of any one of claims 7 to 11.

Description

Control method of image forming device and related equipment Technical Field The present application relates to the field of image forming apparatuses, and more particularly, to a control method of an image forming apparatus and related devices. Background In an image forming apparatus, such as a printer, an image is formed by applying an electrostatic principle to a transfer material, such as paper, to which a toner image on an image forming unit is attached, and fixing the transfer material to the paper. When the intermediate transfer belt is in contact with the surface of the photosensitive drum, voltage errors applied to the surface of the photosensitive drum may be caused by unstable impedance of the intermediate transfer belt, and the linear speeds of the photosensitive drum assembly and the intermediate transfer belt are different, unavoidable friction is caused when the photosensitive drum assembly and the intermediate transfer belt are in contact with each other, and the surface of the photosensitive drum assembly is damaged by wear accumulated for a long time, so that image quality is reduced. Disclosure of Invention In view of the above, the present application provides a control method of an image forming apparatus and related equipment, which can be optimized for control of the abutment and separation timing of a transfer unit and a photosensitive drum during a printing operation. In addition, in the charging method with feedback adjustment control, this method is generally to read a feedback value at the start of printing, and then apply a certain voltage according to the feedback result. In the process of reading the feedback value, the unstable impedance is reduced to be connected into the whole charging loop, so that abnormal fluctuation of the feedback value is caused, the applied charging voltage is an error value, and when the charging voltage is applied in error, ground ash on the image or partial whitening of the image caused by carrier development can occur. Since the linear velocity of the intermediate transfer belt and the surface of the photosensitive drum are not uniform, which is caused by the difference between the two, mechanical or parts, relative friction exists between the intermediate transfer belt and the surface of the photosensitive drum, and the long-time accumulation causes abrasion of the surfaces of the two, which reduces the quality of an image. In actual use, the impedance of the intermediate transfer belt is often unstable. Therefore, in order to solve the above-described problem, the primary transfer roller should not be in contact with the photosensitive drum during the charge feedback value reading process. However, in order to shorten the first page printing output time and improve user experience, the transfer unit should be abutted with the photosensitive drum as early as possible, so as to shorten the printing preparation time before the actual image is issued. Therefore, the opening of the developing voltage can obviously serve as a reference for the contact timing of the transfer unit with the photosensitive drum. In addition, after the secondary transfer of the image is completed, the transfer belt and the photosensitive drum should be separated as much as possible, and the mark for the completion of the secondary transfer is normally the closing of the charge removing needle in the voltage control method by the charge removing needle, so that the mark can be used as a reference of the separation timing of the transfer unit when the charge removing needle is closed. In a first aspect, an embodiment of the present invention provides another image forming apparatus, including: a plurality of image carriers each for carrying an electrostatic latent image formed into a toner image by developing a toner of a single color; a plurality of chargers for charging surfaces of the plurality of image carriers; A plurality of developing members for supplying the toner of the single color to each of the image carriers; a developing charging member for supplying power to a plurality of the developing members, respectively; an intermediate transfer body configured to be abutted against or separated from at least one of the image carriers to receive a toner image on the at least one image carrier; a primary transfer member for abutting the intermediate transfer body against at least one image carrier to transfer the toner image on the at least one image carrier onto the intermediate transfer body; A secondary transfer member for transferring the toner image on the intermediate transfer body onto a transfer material; a first driving member for driving the primary transfer member to move, driving the intermediate transfer body to switch in a state of abutting and separating from the at least one image carrier; And a control unit configured to control the primary transfer member to drive the intermediate transfer member to abut against the at least one image carrier when pow