WO2022016986A1 - 打印作业切换方法、图像形成装置及可读存储介质 - Google Patents

打印作业切换方法、图像形成装置及可读存储介质 Download PDF

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Publication number
WO2022016986A1
WO2022016986A1 PCT/CN2021/095691 CN2021095691W WO2022016986A1 WO 2022016986 A1 WO2022016986 A1 WO 2022016986A1 CN 2021095691 W CN2021095691 W CN 2021095691W WO 2022016986 A1 WO2022016986 A1 WO 2022016986A1
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WIPO (PCT)
Prior art keywords
print job
potential
controller
speed
developing roller
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Application number
PCT/CN2021/095691
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English (en)
French (fr)
Inventor
邵哲
Original Assignee
珠海奔图电子有限公司
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Application filed by 珠海奔图电子有限公司 filed Critical 珠海奔图电子有限公司
Publication of WO2022016986A1 publication Critical patent/WO2022016986A1/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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • 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
    • G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
    • G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
    • 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
    • G03G15/50—Machine control of apparatus for electrographic processes using a charge pattern, e.g. regulating differents parts of the machine, multimode copiers, microprocessor control
    • G03G15/5008—Driving control for rotary photosensitive medium, e.g. speed control, stop position control

Definitions

  • the present application relates to the technical field of image processing, and in particular, to a print job switching method, an image forming apparatus, and a readable storage medium.
  • Image forming apparatuses are used to perform image forming jobs such as generating, printing, receiving and transmitting image data, and examples of the image forming apparatuses include printers, scanners, copiers, facsimile machines, and multifunction peripherals that perform the above functions in a single device Equipment (MFP, Multi-Functional Peripheral).
  • MFP Multi-Functional Peripheral
  • Existing image forming apparatuses generally have multiple modes.
  • the multiple modes can correspond to image formation on different types of paper.
  • the polygon mirror in the exposure assembly of the image forming apparatus operates at a first speed.
  • the polygon mirrors of the image forming device rotate at a second speed, wherein the second speed is lower than the first speed.
  • the rotation speed of the polygon mirror is positively related to the width of the paper.
  • the photoelectric sensor is arranged on the side between the photoreceptor (OPC, Organic Photoconductor) and the exposure component, and is used to sense the light signal to determine the phase of the polygon.
  • OPC Organic Photoconductor
  • the line synchronization signal is fed back to the controller of the image forming device, so that the controller gradually outputs the image data corresponding to the line image/next line image in response to the line synchronization signal, thereby ensuring the normal operation of exposure and development.
  • the controller of the image forming apparatus will switch the angular velocity of the polygon mirror from the linear velocity corresponding to the A4 paper.
  • the photoelectric sensor needs to determine the phase of the polygonal mirror according to the light signal to output the line synchronization signal to the controller, and the angular velocity of the polygonal mirror is switched from the linear velocity corresponding to the A4 paper to A6.
  • the exposure component After the line speed corresponding to the paper, before the photoelectric sensor outputs the line synchronization signal to the controller, the exposure component needs to be continuously exposed and the controller cannot determine the phase of the polygon mirror, which will lead to abnormal exposure of the photoreceptor.
  • the general practice in the prior art is: after completing the job corresponding to A4 paper, first stop the exposure assembly (that is, change the angular velocity of the polygon mirror to 0), and then restart the exposure assembly in a new mode ( That is, the angular velocity of the polygonal mirror is adjusted from 0 to the linear velocity corresponding to A6), but this method will lead to a long switching time, and the user will obviously feel that the image forming apparatus is paused.
  • Embodiments of the present application provide a print job switching method, an image forming apparatus, an electronic device, a readable storage medium, and a computer program product, which can ensure normal exposure during switching between different types of jobs, shorten the switching time, and improve user experience. .
  • an embodiment of the present application provides a print job switching method, which is applied to an image forming apparatus
  • the image forming apparatus includes: a controller, an exposure assembly, a photoreceptor, and a developing roller
  • the exposure assembly includes a light emitting part and a polygonal mirror , the polygon mirror, the photoreceptor and the developing roller rotate under the control of the controller, and the controller is also used to control the potential of the developing roller
  • the exposure assembly further includes a sensor, the sensor for detecting the phase of the polygon mirror according to the laser light generated by the light-emitting part, and when the phase of the polygon mirror is a preset phase, outputting a first feedback signal to the controller
  • the method includes:
  • the controller controls the potential of the developing roller to be adjusted from the first potential to the second potential, and controls the light emitting section Stop generating laser light, wherein the angular velocities of the first print job and the second print job corresponding to the polygon mirror are respectively a first speed and a second speed, the first speed is different from the second speed, and the The absolute value of the second potential is lower than the absolute value of the potential of the area of the photoreceptor irradiated by the laser light;
  • the controller controls the light-emitting part to stop generating laser light
  • the controller switches the angular velocity of the polygon mirror from the first velocity to the second velocity
  • the controller controls the light-emitting part to regenerate laser light
  • the controller receives a first feedback signal generated by the sensor, and the first feedback signal is used to determine the phase of the polygon mirror, and then determine the start pixel point or the end pixel point of a line of scanning images;
  • the controller adjusts the potential of the developing roller back to the first potential whose absolute value is higher than the absolute value of the potential of the area of the photoconductor irradiated with the laser light.
  • the method further includes:
  • the controller controls the linear speed of the photoreceptor to switch from a third speed to a fourth speed, wherein the linear speed of the photoreceptor corresponding to the first print job is the third speed, and the second print job corresponds to The linear velocity of the photoreceptor is a fourth velocity, and the third velocity is different from the fourth velocity.
  • the controller adjusts the electric potential of the developing roller to be the first electric potential, including:
  • the potential of the developing roller is adjusted to return to the first potential.
  • the first print job and the second print job correspond to two different print jobs sent by the same user or different users within the same time period, or, The first print job and the second print job correspond to different pages in the same print job.
  • an embodiment of the present application provides an image forming apparatus, including: a controller, an exposure assembly, a photoreceptor, and a developing roller, the exposure assembly includes a light-emitting part and a polygonal mirror, the polygonal mirror, the photoreceptor, and the The developing roller rotates under the control of the controller, and the controller is also used to control the electric potential of the developing roller; the exposure assembly further includes a sensor, which is used for detecting the laser light generated by the light-emitting part the phase of the polygon mirror, when the phase of the polygon mirror is a preset phase, output a first feedback signal to the controller;
  • the controller is also used to:
  • the angular velocities of the first print job and the second print job corresponding to the polygon mirror are a first speed and a second speed, respectively, the first speed is different from the second speed, and the second potential the absolute value is lower than the absolute value of the electric potential of the area of the photoreceptor irradiated by the laser light;
  • the first feedback signal is used to determine the phase of the polygon mirror, and then determine the start pixel point or the end pixel point of a line of scanning images;
  • the electric potential of the developing roller is adjusted to return to the first electric potential whose absolute value is higher than the absolute value of the electric potential of the area of the photoreceptor irradiated with the laser light.
  • the controller is further configured to:
  • the linear velocity of is the fourth velocity, and the third velocity is different from the fourth velocity.
  • the controller adjusts the electric potential of the developing roller to be the first electric potential, including:
  • the potential of the developing roller is adjusted to return to the first potential.
  • the first print job and the second print job correspond to two different print jobs sent by the same user or different users within the same time period, or, The first print job and the second print job correspond to different pages in the same print job.
  • an embodiment of the present application provides an electronic device, the electronic device includes a memory and a processor, the memory stores a computer program, the processor is connected to the memory, and the processor executes a computer program
  • the program is an instruction to implement the method in the first aspect or any feasible implementation manner of the first aspect.
  • an embodiment of the present application provides a readable storage medium, where the readable storage medium includes computer instructions, and when the computer instructions are executed on an electronic device, the electronic device is made to perform the first aspect or the first aspect Instructions for methods in any possible implementation.
  • an embodiment of the present application provides a computer program product, which, when the computer program product runs on an electronic device, enables the electronic device to execute the first aspect or any feasible implementation manner of the first aspect. method instruction.
  • the electric potential of the developing roller before receiving the first feedback signal, is controlled to be adjusted from the first electric potential to the first electric potential whose absolute value is lower than the absolute value of the electric potential of the area of the photoreceptor irradiated by laser light.
  • the two potentials and the paused light-emitting part stop generating laser light to achieve the purpose of pausing development and exposure, respectively, and then generate laser light when the angular velocity of the polygon mirror reaches the target value (ie, the second speed), and wait for the phase of the polygon mirror to reach a line of scanning images.
  • the angular velocity of the polygon mirror can be directly switched to the target linear velocity without first exposing the The assembly stops running (i.e., the angular velocity of the polygon is changed to 0), and then the exposure assembly is restarted in a new mode (i.e., the angular velocity of the polygon is adjusted from 0 to the linear velocity corresponding to A6), thereby reducing the time required for switching operations.
  • the exposure is suspended before the angular velocity of the polygon mirror is adjusted, and the developing operation of the developing roller is suspended before the line synchronization signal is determined, abnormal exposure and abnormal development are avoided.
  • FIG. 1 is a schematic structural diagram of an image forming apparatus according to an embodiment of the present invention
  • FIG. 2 is a block diagram of a control system of an image forming apparatus according to an embodiment of the present invention
  • FIG. 3 is a schematic diagram of a part of the structure of a controller and an image forming part in an image forming apparatus according to an embodiment of the present invention
  • FIG. 4 is a flowchart of a print job switching method provided by an embodiment of the present invention.
  • FIG. 5 is another flowchart of a print job switching method according to an embodiment of the present invention.
  • FIG. 6 is another flowchart of a print job switching method according to an embodiment of the present invention.
  • FIG. 7 is a schematic structural diagram of an electronic device according to an embodiment of the present invention.
  • At least one means one or more, and “plurality” means two or more.
  • the character “/” generally indicates that the associated objects are an “or” relationship.
  • At least one item(s) below” or similar expressions thereof refer to any combination of these items, including any combination of single item(s) or plural items(s).
  • at least one item (a) of a, b, or c may represent: a, b, c, ab, ac, bc, or abc, where a, b, and c may be single or multiple .
  • FIG. 1 is a schematic structural diagram of an image forming apparatus provided by an embodiment of the present invention
  • FIG. 2 is a block diagram of a control system of an image forming apparatus provided by an embodiment of the present invention
  • FIG. 3 is an image forming apparatus provided by an embodiment of the present invention
  • an image forming apparatus 1 is used to perform image forming jobs such as generating, printing, receiving and transmitting image data
  • examples of the image forming apparatus 1 include a printer, a scanner, a copier, a facsimile machine, and in a single device A Multi-Functional Peripheral (MFP) that performs the above functions.
  • MFP Multi-Functional Peripheral
  • the image forming apparatus includes a controller a, an operation unit (not shown), an image reading unit b, an image forming unit c, a paper setting unit d, and a discharge tray (not shown).
  • the controller a controls the entire image forming apparatus 1 .
  • the operation unit includes a display unit (not shown), and the display unit is a display screen for displaying information transmitted from the image forming apparatus 1 side and input contents of the user.
  • the operation unit is used for inputting image forming conditions such as the number of print copies and gradation, and turning the power on or off.
  • the image reading section b includes an ADF (Auto Document Feeder) as a document feeding device that feeds the document placed at the placement position to the reading position.
  • the image reading section reads the image of the document placed on the ADF or the stage.
  • the paper placing part d includes a manual tray (not shown) for manually placing paper, and a paper feeder d1 that can store multiple sheets of different sizes.
  • the paper placing part d is used for placing paper, and the image forming apparatus may include one or more Paper box d1, in this embodiment of the present invention, the number of paper supply boxes d1 is at least two, and the at least two paper supply boxes d1 are used to store different types of paper, such as A4 paper, A6 paper and so on.
  • the image forming unit c forms an image on the conveyed sheet based on the image read by the image reading unit b or image data transmitted via the network.
  • the paper on which the image is formed by the image forming unit c is discharged to the discharge tray.
  • the image forming part c includes: four imaging units 10, four exposure assemblies 20 corresponding to the four imaging units 10 one-to-one, a developing unit 30, an intermediate transfer belt 40, including and each imaging unit
  • the four primary transfer rollers 50 (an example of the transfer member), the secondary transfer roller 60, the fixing unit 70 and the like are provided correspondingly, wherein the four image forming units 10 are associated with black (BK), magenta (M) and the like. ), cyan (C), and yellow (Y), respectively.
  • Each image forming unit 10 includes a photosensitive drum 101 (an example of a photosensitive body), a charging roller 102 (an example of a charging unit), a cleaning unit 103 , an applied voltage section 104 for charging, and a photosensitive drum motor 105 (an example of a photosensitive drum driving unit) an example).
  • the photosensitive drum motor 105 drives the photosensitive drum 101 to rotate at a certain speed in a clockwise direction or a counterclockwise direction. direction A1 shown).
  • the image forming process of the image forming section c may include: charging the surface of the photosensitive drum 101 with the charging roller 102, and the exposure assembly 20 according to the image data sent from the upper device (eg, the computer) or the image data transmitted from the image reading section b An exposure signal is generated, a laser beam corresponding to the exposure signal is emitted, and the surface of the photosensitive drum 101 is exposed, thereby forming an electrostatic latent image on the surface of the photosensitive drum 101 .
  • the developing unit 30 develops the electrostatic latent image on the surface of the photosensitive drum 101 into a toner image.
  • the primary transfer roller 50 primary transfers the toner image on the surface of the photosensitive drum 101 to the surface of the intermediate transfer belt 40 , thereby forming the toner image on the surface of the intermediate transfer belt 40 .
  • the secondary transfer roller 60 secondary transfers the toner image on the surface of the intermediate transfer belt 40 to the paper.
  • the paper to which the toner image is secondarily transferred is conveyed into the fixing unit 70 .
  • the fixing unit 70 fixes the toner image on the sheet, thereby discharging. Further, the toner remaining on the surface of the photosensitive drum 101 is removed by the cleaning unit 103 .
  • the above-mentioned image forming apparatus 1 is an example of a color image forming apparatus. In other embodiments, if it is a monochrome image forming apparatus, the image forming unit 10, the exposure assembly 20, the primary transfer roller 50, etc. The quantity is 1.
  • the developing unit 30 includes a developing roller (an example of a developing structure) 301 , an externally applied voltage unit 302 for developing, and a developing cartridge 303 .
  • the developing cartridge 303 is used to store the developer.
  • the developing cartridges 303 of the four developing units 30 are respectively used for storing black (BK), magenta (M), cyan (C), and yellow (Y) developers.
  • each exposure unit 20 includes a light emitting part 201 , a polygon mirror 202 , a polygon mirror motor 203 (an example of a polygon mirror driving unit), a polygon mirror motor control unit 204 , an optical lens 205 and a sensor 206 .
  • the light-emitting portion 201 is configured to emit light beams, and the number of the light-emitting portion 201 may be one or more.
  • An example of the light-emitting portion 201 may be a laser emitting diode. In this embodiment of the present invention, the position of the light-emitting portion 201 is fixed.
  • the polygonal prism 202 can be a quadratic prism, a pentaprism, a hexagonal prism, etc.
  • the polygonal prism 202 is a hexagonal prism, which is a regular hexagon, and six reflective surfaces are arranged on the outer peripheral surface of the polygonal prism 202. rotate.
  • the polygon mirror motor 203 is fixed to the polygon mirror 202 , and is rotated at a predetermined rotational speed under the control of the polygon mirror motor control unit 204 to rotate the polygon mirror 202 .
  • the polygon mirror motor control unit 204 may be unnecessary, and the controller a may directly control the polygon mirror motor 203 to rotate at a certain speed.
  • the optical lens 205 is disposed between the polygon mirror 202 and the photosensitive drum 101.
  • the optical lens 205 is, for example, an f ⁇ lens.
  • the number of optical lenses 205 is two.
  • each exposure assembly 20 In addition to having the optical lens 205, one or more other optical lenses 205 may also be present.
  • the sensor 206 is used to detect the phase of the polygonal mirror 202, and when the phase of the polygonal mirror 202 is a preset phase, a first feedback signal is generated to the controller a, wherein, when the light spot emitted by the light-emitting part 201 is just irradiated on one edge of the polygonal mirror 202. At the edge, the phase of the polygon mirror 202 is a preset phase.
  • the first feedback signal is used to determine the phase of the polygon mirror 202, thereby determining the start pixel point or the end pixel point of a line of scanning images.
  • the working principle of the exposure assembly 20 is as follows: the controller a converts the required image data into electrical signals, and outputs it to the light-emitting part 201 to emit a light spot.
  • the lens 205 reflects on the photosensitive drum 101, and a light spot G1 is formed on the photosensitive drum 101.
  • the controller a then emits a second light spot G2, and the polygon mirror 202 rotates a little bit, so that the second light spot is irradiated on the photosensitive drum.
  • the edge of the first light spot on the drum 101, and so on, one edge of the polygon mirror 202 scans one line of the image, and one line of the image corresponds to one line of the light spot track. After the photosensitive drum 101 scans one line (as shown in FIG.
  • one line of the scanned image corresponds to
  • the light spots are evenly arranged along the W direction), and rotated to the A1 direction by a preset distance, therefore, an electrostatic latent image in units of light spots is formed on the photosensitive drum 101 .
  • the polygon mirror 202 reaches the preset phase, the first light spot in a line of light spot tracks is formed on the photosensitive drum 101 .
  • the controller a is connected to the sensor 206 , and the sensor 206 may be a photoelectric sensor.
  • the photoelectric sensor is disposed on the side between the polygon mirror 202 and the photosensitive drum 101 for sensing optical signals. , convert the optical signal into an electrical signal.
  • the photoelectric sensor sends a first feedback signal to the controller a.
  • An example of the first feedback signal may be a horizontal synchronization signal.
  • the controller a is connected to the polygonal mirror motor 203 or the polygonal mirror motor control unit 204, and is used to control the polygonal mirror motor 203 or control the polygonal mirror motor 203 to rotate at different linear speeds through the polygonal mirror motor 203 according to different image job types, thereby controlling the polygonal mirror 202. Rotate at different linear speeds.
  • the controller a is connected to the photosensitive drum motor 105 for controlling the photosensitive drum motor 105 to rotate at different linear speeds according to different image job types, and further to control the photosensitive drum 101 to rotate at different linear speeds.
  • the controller a is connected to the charging external voltage unit 104. During the printing process of the image forming apparatus 1, the controller a controls the charging external voltage unit 104 to apply a charging bias to the charging roller 102 to charge the charging roller 102. In addition, during the printing process of the image forming apparatus 1, the photosensitive drum 101 is rotated by the photosensitive drum motor 105, and the charging roller 102 in contact with the photosensitive drum 101 is driven to rotate by the photosensitive drum 101. Therefore, the charging roller 102 makes the photosensitive drum 102 rotate. The surface of the drum 101 is uniformly charged.
  • the light emitting part 201 of the exposure unit 20 emits a light beam, and the emitted light beam is deflected by the reflective surfaces of the polygon mirror 202 , passes through the optical lens 205 and reaches the surface of the photosensitive drum 101 , where static electricity is formed on the surface of the photosensitive drum 101 latent image.
  • the controller a is connected to the externally applied voltage unit 302 for developing, and the controller a controls the externally applied voltage unit 302 for developing to apply a developing bias to the developing roller 301 during printing. Accordingly, the toner in the developer is supplied from the developing roller 301 to the surface of the photoreceptor drum 101, and the electrostatic latent image on the surface of the photoreceptor drum 101 is developed into a toner image.
  • the photosensitive drum 101 is charged by the charging roller 102 so that the surface potential of the photosensitive drum 101 becomes the dark portion potential Vd.
  • the exposure unit 20 emits laser light to expose the photosensitive drum 101, the potential of the area (spot) of the photosensitive drum 101 irradiated with the laser light corresponds to the bright part potential V1, and the electric potential in the photosensitive drum 101 in the area not irradiated with the laser light corresponds to the dark part potential Vd corresponds.
  • the externally applied voltage portion 302 for developing applies a developing bias voltage Vdc to the developing roller 301, and the surface potential of the developing roller 301 corresponds to the developing bias voltage Vdc.
  • the developing bias voltage Vdc is controlled to a value higher than the dark portion potential Vd and lower than the bright portion potential V1.
  • the dark part potential Vd is, for example, -400V
  • the developing bias voltage Vdc is, for example, -300V
  • the bright part potential V1 is, for example, -100V.
  • the toner (negative polarity) carried on the developing roller 301 is made to adhere to the area of the photosensitive drum 101 irradiated with laser light (bright part potential V1), but in the area not irradiated with laser light (dark part potential Vd) Does not adhere to the photosensitive drum 101 .
  • Existing image forming apparatuses generally have multiple modes.
  • multiple modes can correspond to imaging on different types of paper.
  • the polygonal mirror 202 in the exposure assembly 20 of the image forming apparatus 1 may The polygon mirrors 202 of the image forming apparatus 1 rotate at a second speed respectively, and the second speed is lower than the first speed.
  • the rotation speed of the polygon mirror 202 is the same as that of the paper. is positively correlated with the width.
  • the photoelectric sensor is arranged on the side between the photoreceptor and the exposure assembly 20 to sense the light signal to determine the phase of the polygon mirror 202.
  • the phase of the polygon mirror 202 corresponds to the start pixel/end pixel of a line of images
  • a line synchronization signal is fed back to the controller a of the image forming apparatus 1, so that the controller a gradually outputs the image data corresponding to the line image/next line image in response to the line synchronization signal, thereby ensuring the normal operation of exposure and development.
  • the controller a of the image forming apparatus 1 will set the linear velocity of the polygon mirror 202 to correspond to the A4 paper.
  • the linear velocity of A6 is switched to the linear velocity corresponding to the A6 paper. Since the linear velocity of the polygon mirror 202 changes, the photoelectric sensor needs to determine the phase of the polygon mirror 202 according to the optical signal to output a line synchronization signal to the controller a.
  • the exposure unit 20 needs to continue to expose and the controller a cannot determine the position of the polygon mirror 202. phase, resulting in abnormal exposure of the photoreceptor.
  • the general practice in the prior art is: after completing the job corresponding to A4 paper, first stop the exposure assembly 20 (that is, change the linear velocity of the polygon mirror 202 to 0), and then restart in a new mode Exposing the assembly 20 (ie, adjusting the linear velocity of the polygon mirror 202 from 0 to the linear velocity corresponding to A6), but this method will result in a longer switching time, and the user will noticeably feel the image forming apparatus pauses.
  • embodiments of the present invention provide a print job switching method, an image forming apparatus, and a readable storage medium, which can solve the problems of abnormal exposure and long switching time in the process of switching between different types of print jobs in the prior art It can ensure normal exposure and shorten the switching time to improve user experience.
  • an embodiment of the present invention provides a print job switching method, which is applied to an image forming apparatus 1 .
  • the image forming apparatus 1 includes: a controller a, an exposure assembly 20 , a photoreceptor (eg, a photoreceptor drum 101 ) and a
  • the developing roller 301, the exposure assembly 20 includes a light-emitting part 201, a polygonal mirror 202 and a sensor 206, the polygonal mirror 202, the photoreceptor and the developing roller 301 rotate under the control of the controller a, which is also used to control the developing bias of the developing roller 301
  • the exposure assembly 20 also includes a sensor 206, the sensor 206 is used for detecting the phase of the polygon mirror 202 according to the laser light generated by the light emitting part 201, and when the phase of the polygon mirror 202 is a preset phase, it outputs the first feedback signal to the controller a.
  • a print job switching method includes:
  • Step S101 When it is determined to switch from the first print job of the first type to the second print job of the second type, the controller controls the potential of the developing roller to be adjusted from the first potential to the second potential, and controls the light emitting part to stop generating laser light , where the angular velocities of the polygon mirror corresponding to the first print job and the second print job are the first speed and the second speed, respectively, the first speed is different from the second speed, and the absolute value of the second potential is lower than the area where the photoreceptor is irradiated by laser light the absolute value of the electric potential;
  • Step S102 the controller switches the angular velocity of the polygon mirror from the first velocity to the second velocity;
  • Step S103 the controller controls the light-emitting part to regenerate laser light
  • Step S104 the controller receives the first feedback signal generated by the sensor, and the first feedback signal is used to determine the phase of the polygon mirror, and then determine the start pixel point or the end pixel point of the scanned image of one line;
  • Step S105 The controller adjusts the potential of the developing roller to return to the first potential, and the absolute value of the first potential is higher than the absolute value of the potential of the area of the photoreceptor irradiated by the laser light.
  • the electric potential of the developing roller before receiving the first feedback signal, is controlled to be adjusted from the first electric potential to the first electric potential whose absolute value is lower than the absolute value of the electric potential of the area of the photoreceptor irradiated by laser light.
  • the two potentials and the paused light-emitting part stop generating laser light to achieve the purpose of pausing development and exposure, respectively, and then generate laser light when the angular velocity of the polygon mirror reaches the target value (ie, the second speed), and wait for the phase of the polygon mirror to reach a line of scanning images.
  • the angular velocity of the polygon mirror can be directly switched to the target linear velocity without first exposing the The assembly stops running (i.e., the angular velocity of the polygon is changed to 0), and then the exposure assembly is restarted in a new mode (i.e., the angular velocity of the polygon is adjusted from 0 to the linear velocity corresponding to A6), thereby reducing the time required for switching operations.
  • the exposure is suspended before the angular velocity of the polygon mirror is adjusted, and the developing operation of the developing roller is suspended before the line synchronization signal is determined, abnormal exposure and abnormal development are avoided.
  • Scenario 1 Different users send two different print jobs to the image forming apparatus within the same time period, and the two different print jobs correspond to different linear velocities of the polygon mirror 202 .
  • the first user and the second user respectively deliver the first print job and the second print job to the image forming apparatus at the same time.
  • the first user first sends the first print job to the image forming apparatus, and when the image forming apparatus completes the first print job or before the image forming apparatus completes the first print job, the second user sends the second print job to the image forming apparatus. image forming apparatus.
  • Scenario 2 The same user sends two different print jobs to the image forming apparatus in the same time period, and the two different print jobs correspond to different linear velocities of the polygon mirror 202 .
  • the first user simultaneously issues the first print job and the second print job to the image forming apparatus.
  • the first user first sends the first print job to the image forming apparatus, and when the image forming apparatus completes the first print job or before the image forming apparatus completes the first print job, the first user sends the second print job to the image forming apparatus. image forming apparatus.
  • Scenario 3 The same user sends a print job to the image forming apparatus, and the print job includes a first print job and a second print job, that is, some pages in the print job are used as the first print job, and some pages in the print job are used as the first print job. Two print jobs.
  • examples of two different print jobs may be print jobs of different paper types.
  • the paper type corresponding to the first print job is A4 paper
  • the paper type corresponding to the second print job is A6 paper
  • the paper type information Can be carried in job information.
  • step S101 when it is determined to switch from the first print job of the first type to the second print job of the second type, the controller a controls the potential of the developing roller 301 to be adjusted from the first potential to the second potential, and controls the light emitting section Stop generating laser light, wherein the angular velocities of the polygon mirror corresponding to the first print job and the second print job are the first speed and the second speed, respectively, the first speed is different from the second speed, and the absolute value of the second potential is lower than the photoreceptor being lasered the absolute value of the potential of the illuminated area;
  • the first print job and the second print job may be issued by the terminal side, or issued by the operation unit of the image forming apparatus 11, and scanned through the image reading unit b to generate image data.
  • the first print job and the second print job may correspond to different types of paper, and the paper type information may be carried in the setting information corresponding to the first print job and the second print job.
  • the first print job corresponds to A4 paper
  • the second print job corresponds to A6 paper.
  • the linear speeds of the first print job and the second print job corresponding to the polygon mirror 202 are the first speed and the second speed, respectively, and the first speed is different from the second speed.
  • the controller a controls the linear speed of the polygon mirror 202 to be the first speed through the polygon mirror motor 203 .
  • the controller a controls the potential of the developing unit to be adjusted from the first potential to the second potential, so that the toner (negative polarity) carried on the developing roller 301 does not adhere to the area of the photosensitive drum 101 irradiated by the laser light (bright potential V1), thereby stopping the process of development.
  • the first potential corresponds to the above-mentioned developing bias voltage Vdc
  • the developing bias voltage Vdc is, for example, -300V
  • the second potential may be -50V
  • the potential of the area where the photoreceptor is irradiated by laser light corresponds to the above-mentioned bright part potential V1
  • the photosensitive body is irradiated by laser light.
  • the potential of the region of the body not irradiated by the laser light corresponds to the dark part potential Vd above.
  • the controller a adjusts the potential of the developing unit from the first potential to the second potential by controlling the developing bias applied to the developing roller 301 by the externally applied voltage portion 302 for developing.
  • the controller a and the light-emitting part 201 are used to control the light-emitting part 201 to emit laser light.
  • the controller a controls the potential of the developing roller 301 to be adjusted from the first potential to the second potential, and the sequence in which the light-emitting portion 201 stops generating laser light is not limited in the present invention, that is, the controller a can first control the potential of the developing roller 301 from The first potential is adjusted to the second potential, and then the light-emitting portion 201 is controlled to stop generating laser light, or the light-emitting portion 201 is controlled to stop generating laser light, and then the potential of the developing roller 301 is adjusted from the first potential to the second potential, or the developing roller is controlled at the same time.
  • the potential of 301 is adjusted from the first potential to the second potential and the light-emitting portion 201 stops generating laser light.
  • step S102 the controller switches the angular velocity of the polygon mirror from the first velocity to the second velocity;
  • the controller a may determine the linear velocities of the photosensitive drum 101 and the polygon mirror 202 according to different paper type information, for example, according to the paper type information corresponding to the first print job, to determine the photosensitive drum 101 and the polygon mirror when the first print job is executed
  • the linear velocity of 202 is determined according to the paper type information corresponding to the second printing job to determine the linear velocity of the photosensitive drum 101 and the polygon mirror 202 when the second printing job is executed.
  • the linear speeds of the first print job and the second print job corresponding to the polygon 202 are the first speed and the second speed, respectively, and the controller a is connected to the polygon motor 203 or the polygon motor control unit 204 for different Depending on the image job type, output different voltage parameters to control the polygon motor 203 or control the polygon motor 203 to rotate at different linear speeds through the polygon motor control unit 204, so as to switch the linear speed of the polygon 202 from the first speed to the second speed.
  • step S103 the controller controls the light-emitting part to generate laser light again.
  • step S103 The purpose of step S103 is to enable the sensor 206 to detect the phase of the polygon mirror 202 according to the optical signal of the laser.
  • the controller a and the light-emitting part 201 are used to control the light-emitting part 201 to emit laser light.
  • step S104 the controller receives the first feedback signal generated by the sensor, and the first feedback signal is used to determine the phase of the polygon mirror, and then determine the start pixel point or the end pixel point of the scanned image of one line;
  • a first feedback signal is generated to the controller a, wherein when the light spot emitted by the light-emitting part 201 just irradiates the edge of one edge of the polygon mirror 202, the phase of the polygon mirror 202 is preset phase.
  • the first feedback signal is used to determine the phase of the polygon mirror 202, thereby determining the start pixel point or the end pixel point of a line of scanning images.
  • the sensor 206 can be a photoelectric sensor specifically, and the photoelectric sensor is arranged on the side between the polygon mirror 202 and the photosensitive drum 101 to sense the optical signal and convert the optical signal into an electrical signal.
  • the phase of the polygon mirror 202 is a preset phase
  • the photoelectric sensor A first feedback signal is sent to the controller a, and an example of the first feedback signal may be a line synchronization signal.
  • the controller a determines the phase of the polygon mirror 202, and gradually outputs the image data corresponding to the image of the line/the image of the next line, thereby ensuring the normal operation of exposure and development.
  • step S105 the controller adjusts the potential of the developing roller back to the first potential, the absolute value of which is higher than the absolute value of the potential of the area where the photoreceptor is irradiated by the laser light.
  • an example of the photoreceptor may be the photoreceptor drum 101 .
  • the controller a controls the potential of the developing unit to be restored from the second potential to the first potential, the purpose of which is to make the toner (negative polarity) carried on the developing roller 301 adhere to the area (negative polarity) of the photosensitive drum 101 irradiated by the laser light. Bright potential V1), thereby restarting the development process.
  • the controller a adjusts the potential of the developing roller 301 to the first potential, including: after the area of the photoreceptor irradiated by the laser turns over the position of the developing roller 301, adjusting the developing roller 301 The potential of 301 is restored to the first potential, so that the area of the photoreceptor irradiated by the laser is not developed, and the abnormality of the developer is avoided.
  • the method for switching a print job further includes: the controller a controls the linear speed of the photoreceptor to switch from a third speed to a fourth speed, wherein the linear speed of the photoreceptor corresponding to the first print job is the third speed, The linear speed of the photoreceptor corresponding to the second print job is the fourth speed, and the third speed is different from the fourth speed.
  • the controller a controls the linear speed of the photoreceptor to be switched from the third speed to the fourth speed before or after any step after determining to switch from the first print job of the first type to the second print job of the second type .
  • the linear speeds of the photoreceptor corresponding to the first print job and the second print job are the third speed and the fourth speed respectively
  • the photoreceptor is specifically the photoreceptor drum 101
  • the controller a is the photoreceptor drum corresponding to the photoreceptor drum 101
  • the motor 105 is connected to output different voltage parameters according to different image job types to control the photosensitive drum motor 105 to rotate at different linear speeds, so as to switch the linear speed of the photosensitive drum 101 from the third speed to the fourth speed.
  • Step S201 the image forming apparatus receives the print job, and executes step S202;
  • Step S202 the image forming apparatus analyzes the print job, and determines whether the print job includes at least two job types, if yes, executes step S203, if not, executes step S204;
  • the print job includes at least two job types.
  • the print job includes a job type corresponding to A4 paper and a job type corresponding to A6 paper, and the two job types correspond to different linear velocities of the polygon mirror 202 and different linear velocities of the photosensitive drum 101 .
  • Step S203 During the process of switching between different job types, steps S101-S105 shown in FIG. 4 are executed.
  • Step S204 Execute a print job according to a job type.
  • Step S301 Receive a first print job, where the first print job corresponds to a first job type, and execute step S302;
  • Step S302 Process the first print job according to the first job type, and execute step S303;
  • Step S303 Determine whether the last page of the first print job is completed, if so, execute step S304, if not, execute step S303;
  • Step S304 Determine whether a new print job (second print job) is received before or when the first print job is executed, if so, execute S305, and if not, end this process;
  • Step S305 Parse the job type corresponding to the second print job, and execute Step S306;
  • Step S306 Whether the job types corresponding to the second print job and the first job are the same, that is, whether the polygonal linear velocities corresponding to the two job types are the same, if so, go to step S307, if not, go to step S308;
  • Step S307 Process the second print job according to the first job type
  • Step S308 in the process of switching between different job types, perform steps S101-S105 shown in FIG. 4;
  • Step S309 Process the second print job according to the second job type.
  • the above-mentioned print job switching method in the embodiment of the present invention can reduce the pause of the image forming apparatus when the speed of the polygon mirror 202 is switched, and realize the seamless switching of the image forming apparatus 1 when the speed of the polygon mirror 202 is switched.
  • an embodiment of the present application provides an image forming apparatus 1, including: a controller a, an exposure assembly 20, a photoreceptor and a developing roller 301, the exposure assembly 20 includes a light emitting part 201 and a polygonal mirror 202, and the polygonal mirror 202 , the photoreceptor and the developing roller 301 are rotated under the control of the controller a, which is also used to control the potential of the developing roller 301; 202, when the phase of the polygon mirror 202 is a preset phase, output the first feedback signal to the controller a;
  • Controller a is also used to:
  • the potential of the developing roller 301 is controlled to be adjusted from the first potential to the second potential, and the light emitting section 201 is controlled to stop generating laser light, wherein,
  • the linear speeds of the polygon mirror 202 corresponding to the first print job and the second print job are the first speed and the second speed, respectively.
  • the first speed is different from the second speed, and the absolute value of the second potential is lower than that of the area where the photoreceptor is irradiated by laser light. the absolute value of the potential;
  • the first feedback signal is used to determine the phase of the polygon mirror 202, and then determine the start pixel point or the end pixel point of the scanned image of one line;
  • the potential of the adjustment developing roller 301 is restored to the first potential whose absolute value is higher than that of the region where the photoreceptor is irradiated with laser light.
  • controller a is also used to:
  • the linear speed of the photoreceptor is controlled to be switched from the third speed to the fourth speed, wherein the linear speed of the photoreceptor corresponding to the first print job is the third speed, the linear speed of the photoreceptor corresponding to the second print job is the fourth speed, and the third speed is the third speed. Speed is different from fourth speed.
  • the controller a adjusts the potential of the developing roller 301 to be the first potential, including:
  • the potential of the developing roller 301 is adjusted to return to the first potential.
  • the first print job and the second print job correspond to two different print jobs sent by the same user or different users within the same time period, or, the first print job and The second print job corresponds to a different page within the same print job.
  • Embodiments of the present invention further provide a computer-readable storage medium, where the computer-readable storage medium includes a stored program, wherein, when the program runs, a device where the storage medium is located is controlled to execute the print job in any one or more embodiments of the present invention
  • the switching method in order to avoid repetition, will not be repeated here.
  • Embodiments of the present invention also provide a computer program product, which, when the computer program product runs on a computer, causes the computer to execute the steps of the print job switching method in any one or more embodiments of the present invention. To avoid repetition, this Not to go into details here.
  • an embodiment of the present invention further provides an electronic device 50 .
  • the electronic device 50 in this embodiment includes: a processor 51 , a memory 52 , and a computer program stored in the memory 52 and running on the processor 51 53.
  • the computer program 53 is executed by the processor 51, the print job switching method in the embodiment is implemented. To avoid repetition, details are not repeated here.
  • the computer program is executed by the processor 51, the functions of each model/unit in the image forming apparatus 1 in the embodiment are implemented, and to avoid repetition, details are not described here.
  • the electronic device 50 may be a computing device such as a desktop computer, a notebook, a palmtop computer, and a cloud server.
  • the electronic device 50 may include, but is not limited to, a processor 51 and a memory 52 .
  • FIG. 7 is only an example of the electronic device 50 , and does not constitute a limitation on the electronic device 50 , and may include more or less components than shown, or combine some components, or different components
  • the electronic device may also include an input and output device, a network access device, a bus, and the like.
  • the so-called processor 51 may be a central processing unit (Central Processing Unit, CPU), or other general-purpose processors, digital signal processors (Digital Signal Processor, DSP), application specific integrated circuits (Application Specific Integrated Circuit, ASIC), Field-Programmable Gate Array (FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc.
  • a general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
  • the memory 52 may be an internal storage unit of the electronic device 50 , such as a hard disk or a memory of the electronic device 50 .
  • the memory 52 can also be an external storage device of the electronic device 50, such as a plug-in hard disk, a smart memory card (Smart Media Card, SMC), a secure digital (Secure Digital, SD) card, a flash memory card (Flash card) equipped on the electronic device 50. Card), etc.
  • the memory 52 may also include both an internal storage unit of the electronic device 50 and an external storage device.
  • the memory 52 is used to store computer programs and other programs and data required by the electronic device.
  • the memory 52 may also be used to temporarily store data that has been or will be output.
  • the disclosed system, apparatus and method may be implemented in other manners.
  • the apparatus embodiments described above are only illustrative.
  • the division of units is only a logical function division.
  • multiple units or components may be combined or may be Integration into another system, or some features can be ignored, or not implemented.
  • the shown or discussed mutual coupling or direct coupling or communication connection may be through some interfaces, indirect coupling or communication connection of devices or units, and may be in electrical, mechanical or other forms.
  • Units described as separate components may or may not be physically separated, and components shown as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution in this embodiment.
  • each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically alone, or two or more units may be integrated into one unit.
  • the above-mentioned integrated unit may be implemented in the form of hardware, or may be implemented in the form of hardware plus software functional units.
  • the above-mentioned integrated units implemented in the form of software functional units can be stored in a computer-readable storage medium.
  • the above-mentioned software functional unit is stored in a storage medium, and includes several instructions to cause a computer device (which may be a personal computer, a server, or a network device, etc.) or a processor (Processor) to execute part of the steps of the methods in the various embodiments of the present invention .
  • the aforementioned storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), magnetic disk or optical disk and other media that can store program codes .

Abstract

本发明提供一种打印作业切换方法、图像形成装置及可读存储介质，打印作业切换方法包括：当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，控制器控制显影辊的电势由第一电势调整为第二电势，以及控制发光部停止产生激光，第二电势的绝对值低于感光体被激光照射的区域的电势的绝对值；控制发光部停止产生激光；将多棱镜的角速度由第一速度切换到第二速度；控制发光部重新产生激光；接收传感器生成的第一反馈信号，第一反馈信号用于确定多棱镜的相位，进而确定一行扫描图像的起始像素点或末端像素点；调整显影辊的电势恢复为第一电势。上述方法能够在不同类型的作业的切换过程中保证正常曝光且能缩短切换时长，提高用户使用体验。

Description

打印作业切换方法、图像形成装置及可读存储介质
本申请要求于2020年7月24日提交中国专利局、申请号为202010720954.5、发明名称为“打印作业切换方法、图形形成装置及可读存储介质”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
本申请涉及图像处理技术领域，具体涉及打印作业切换方法、图像形成装置及可读存储介质。
背景技术
图像形成装置用于执行图像形成作业，诸如生成、打印、接收和发送图像数据，并且图像形成装置的示例包括打印机、扫描仪、复印机、传真机、以及在单个设备中执行以上功能的多功能外围设备(MFP，Multi-Functional Peripheral)。
现有图像形成装置，一般都有多个模式，多个模式例如可以对应在不同类型的纸张上成像，比如在A4尺寸的纸张上成像时，图像形成装置的曝光组件中的多棱镜以第一速度旋转，而在A6尺寸的纸张上成像时，图像形成装置的多棱镜分别以第二速度旋转，其中，第二速度低于第一速度，通常来说，多棱镜的转速与纸张的宽度呈正相关。
在进行打印作业时，光电传感器设置于感光体(OPC，Organic Photoconductor)和曝光组件之间的一侧，用于感应光信号以确定多棱镜的相位，当多棱镜的相位对应一行图像的起始像素点/末端像素点时，向图像形成装置的控制器反馈行同步信号，使得控制器响应于行同步信号逐步输出该行图像/下一行图像对应的图像数据，从而保证曝光、显影的正常运行。
现有技术中，如果需要从第一模式切换到第二模式，例如从打印A4纸张作业切换到打印A6纸张作业时，图像形成装置的控制器会将多棱镜的角速度由A4纸张对应的线速度切换到A6纸张对应的线速度，由于多棱镜的角速度变化后，光电传感器需要根据光信号确定多棱镜的相位，以输出行同步信号给控制器，而在多棱镜的角速度由A4纸张对应的线速度切换到A6纸张对应的线速度之后，在光电传感器输出行同步信号给控制器之前的这段时间内，曝光组件需要持续曝光且控制器无法确定多棱镜的相位，从而会导致感光体异常曝光。为了解决此问题，现有技术中一般的做法为：完成A4纸张对应的作业之后，先将曝光组件停止运行(即，将多棱镜的角速度变为0)，然后重新以新的模式启动曝光组件(即，将多棱镜的角速度由0调整到A6对应的线速度)，但通过该方法会导致切换时间比较久，并且用户会明显感受到图像形成装置有停顿。
基于上述，本领域技术人员需要一种能够保证正常曝光且能缩短切换时长的打印作业切换方案，以提高用户使用体验。
申请内容
本申请实施例提供一种打印作业切换方法、图像形成装置、电子设备、可读存储介质及计算机程序产品，能够在不同类型作业的切换过程中保证正常曝光且能缩短切换时长，提高用户使用体验。
第一方面，本申请实施例提供一种打印作业切换方法，应用于图像形成装置，所述图像形成装置包括：控制器、曝光组件、感光体及显影辊，所述曝光组件包括发光部及多棱镜，所述多棱镜、所述感光体及所述显影辊在所述控制器的控制下旋转，所述控制器还用于控制所述显影辊的电势；所述曝光组件还包括传感器，所述传感器用于根据所述发光部产生的激光检测所述多棱镜的相位，当所述多棱镜的相位为预设相位时，输出第一反馈信号至所述控制器，所述方法包括：
当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，所述控制器控制所述显影辊的电势由第一电势调整为第二电势，以及控制所述发光部停止产生激光，其中，所述第一打印作业、所述第二打印作业对应所述多棱镜的角速度分别为第一速度、第二速度，所述第一速度不同于所述第二速度，所述第二电势的绝对值低于所述感光体被激光照射的区域的电势的绝对值；
所述控制器控制所述发光部停止产生激光；
所述控制器将所述多棱镜的角速度由所述第一速度切换到所述第二速度；
所述控制器控制所述发光部重新产生激光；
所述控制器接收所述传感器生成的第一反馈信号，所述第一反馈信号用于确定所述多棱镜的相位，进而确定一行扫描图像的起始像素点或末端像素点；
所述控制器调整所述显影辊的电势恢复为所述第一电势，所述第一电势的绝对值高于所述感光体被激光照射的区域的电势的绝对值。
结合第一方面，在一种可行的实现方式中，在所述控制器确定由第一类型的第一打印作业切换为第二类型的第二打印作业之后，所述方法还包括：
所述控制器控制所述感光体的线速度由第三速度切换到第四速度，其中，所述第一打印作业对应所述感光体的线速度为第三速度，所述第二打印作业对应所述感光体的线速度为第四速度，所述第三速度不同于所述第四速度。
结合第一方面，在一种可行的实现方式中，所述控制器调整所述显影辊的电势为第一电势，包括：
当所述感光体被激光照射过的区域转过所述显影辊的位置之后，调整所述显影辊的电势恢复为所述第一电势。
结合第一方面，在一种可行的实现方式中，所述第一打印作业和所述第二打印作业对应同一用户或不同用户在同一时间段内发送的两个不同的打印作业，或者，所述第一打印作业和所述第二打印作业对应同一打印作业内的不同页面。
第二方面，本申请实施例提供了一种图像形成装置，包括：控制器、曝光组件、感光体及显影辊，所述曝光组件包括发光部及多棱镜，所述多棱镜、所述感光体及所述显影辊在所述控制器的控制下旋转，所述控制器还用于控制所述显影辊的电势；所述曝光组件还包括传感器，所述传感器用于根据所述发光部产生的激光检测所述多棱镜的相位，当所述多棱镜的相位为预设相位时，输出第一反馈信号至所述控制器；
所述控制器还用于：
当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，控制所述显影辊的电势由第一电势调整为第二电势，以及控制所述发光部停止产生激光，其中，所述第一打印作业、所述第二打印作业对应所述多棱镜的角速度分别为第一速度、第二速度，所述第一速度不同于所述第二速度，所述第二电势的绝对值低于所述感光体被激光照射的区域的电势的绝对值；
控制所述发光部停止产生激光；
将所述多棱镜的角速度由所述第一速度切换到所述第二速度；
控制所述发光部重新产生激光；
接收所述传感器生成的第一反馈信号，所述第一反馈信号用于确定所述多棱镜的相位，进而确定一行扫描图像的起始像素点或末端像素点；
调整所述显影辊的电势恢复为所述第一电势，所述第一电势的绝对值高于所述感光体被激光照射的区域的电势的绝对值。
结合第二方面，在一种可行的实现方式中，所述控制器还用于：
控制所述感光体的线速度由第三速度切换到第四速度，其中，所述第一打印作业对应所述感光体的线速度为第三速度，所述第二打印作业对应所述感光体的线速度为第四速度，所述第三速度不同于所述第四速度。
结合第二方面，在一种可行的实现方式中，所述控制器调整所述显影辊的电势为第一电势，包括：
当所述感光体被激光照射过的区域转过所述显影辊的位置之后，调整所述显影辊的电势恢复为所述第一电势。
结合第二方面，在一种可行的实现方式中，所述第一打印作业和所述第二打印作业对应同一用户或不同用户在同一时间段内发送的两个不同的打印作业，或者，所述第一打印作业和所述第二打印作业对应同一打印作业内的不同页面。
第三方面，本申请实施例提供了一种电子设备，所述电子设备包括存储器及处理器，所述存储器中存储有计算机程序，所述处理器与所述存储器连接，所述处理器执行计算机程序以实现第一方面或者第一方面任一可行的实现方式中的方法的指令。
第四方面，本申请实施例提供了一种可读存储介质，所述可读存储介质包括计算机指令，当所述计算机指令在电子设备上运行时，使得电子设备执行第一方面或者第一方面任一可行的实现方式中的方法的指令。
第五方面，本申请实施例提供了一种计算机程序产品，当所述计算机程序产品在电子设备上运行时，使得所述电子设备执行如第一方面或者第一方面任一可行的实现方式中的方法的指令。
可以理解，本发明实施例通过在接收到第一反馈信号之前先控制所述显影辊的电势由第一电势调整为绝对值低于所述感光体被激光照射的区域的电势的绝对值的第二电势以及暂停发光部停止产生激光，以分别达到暂停显影、曝光的目的，待所述多棱镜的角速度达到目标值(即第二速度)再产生激光，以及待所述多棱镜的相位到达一行扫描图像的起始像素点或末端像素点对应的相位之后，再恢复为显影辊的电势为第一电势，进而再进行正常的显影，因此，可以直接切换多棱镜的角速度至目标线速 度，不必先将曝光组件停止运行(即，将多棱镜的角速度变为0)，然后重新以新的模式启动曝光组件(即，将多棱镜的角速度由0调整到A6对应的线速度)，从而减少了切换作业所需的时间，同时，由于在调整多棱镜的角速度之前暂停了曝光，在确定行同步信号之前，暂停了显影辊的显影操作，避免了异常曝光和异常显影。
应当理解的是，以上的一般描述和后文的细节描述仅是示例性的，并不能限制本申请。
附图说明
为了更清楚地说明本申请具体实施方式的技术方案，下面将对具体实施方式或现有技术描述中所需要使用的附图作简单地介绍，显而易见地，下面描述中的附图是本申请的一些实施方式，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的附图。
图1为本发明一个实施例提供的一种图像形成装置的结构示意图；
图2为本发明一个实施例提供的一种图像形成装置的控制系统框图；
图3为本发明一个实施例提供的一种图像形成装置中的控制器和图像形成部中的部分结构示意图；
图4为本发明一个实施例提供的打印作业切换方法的流程图；
图5为本发明一个实施例的打印作业切换方法的又一流程图；
图6为本发明一个实施例的打印作业切换方法的又一流程图；
图7为本发明一个实施例的一种电子设备的结构示意图。
具体实施方式
为了更好的理解本发明的技术方案，下面结合附图对本申请实施例进行详细描述。
应当明确，所描述的实施例仅仅是本发明一部分实施例，而不是全部的实施例。基于本发明中的实施例，本领域普通技术人员在没有作出创造性劳动前提下所获得的所有其它实施例，都属于本发明保护的范围。
本申请中，“至少一个”是指一个或者多个，“多个”是指两个或两个以上。“和/或”，描述关联对象的关联关系，表示可以存在三种关系，例如，A和/或B，可以表示：单独存在A，同时存在A和B，单独存在B的情况，其中A，B可以是单数或者复数。字符“/”一般表示前后关联对象是一种“或”的关系。“以下至少一项(个)”或其类似表达，是指的这些项中的任意组合，包括单项(个)或复数项(个)的任意组合。例如，a，b，或c中的至少一项(个)，可以表示：a，b，c，a-b，a-c，b-c，或a-b-c，其中a，b，c可以是单个，也可以是多个。
图1为本发明一个实施例提供的图像形成装置的结构示意图；图2为本发明一个实施例提供的一种图像形成装置的控制系统框图；图3为本发明一个实施例提供的一种图像形成装置中的控制器和图像形成部中的部分结构示意图。
请参阅图1，图像形成装置1用于执行图像形成作业，诸如生成、打印、接收和发送图像数据，并且图像形成装置1的示例包括打印机、扫描仪、复印机、传真机、 以及在单个设备中执行以上功能的多功能外围设备(MFP，Multi-Functional Peripheral)。
作为一种图像形成装置1的示例，图像形成装置包括控制器a、操作部(图未示)、图像读取部b、图像形成部c、纸张放置部d及排出托盘(图未示)。
控制器a用于对图像形成装置1整体进行控制。
操作部包括显示部(图未示)，显示部用于显示从图像形成装置1侧发送的信息、用户的输入内容的显示画面。操作部用于输入印刷份数、浓淡度等图像形成条件、电源的打开或关闭。
图像读取部b包括作为原稿输送装置的ADF(Auto DocumentFeeder，自动输稿器)，其将放置在放置位置的原稿输送至读取位置。图像读取部读取放置在ADF或载置台上的原稿图像。
纸张放置部d包括手动放置纸张的手动托盘(图未示)、可以存放不同尺寸的多张纸张的供纸盒d1，纸张放置部d用于放置纸张，图像形成装置可以包括一个或多个供纸盒d1，在本发明实施例中，供纸盒d1的数量为至少两个，至少两个供纸盒d1用于存放不同类型的纸张，不同类型的纸张例如A4纸张、A6纸张等。
图像形成部c基于通过图像读取部b读取到的图像或经由网络发送来的图像数据，在输送来的纸张上形成图像。通过图像形成部c形成有图像的纸张向排出托盘排出。
下面，对本申请主要涉及到的图像形成部c进一步详细说明。
结合图1-图3，图像形成部c包括：四个成像单元10、与四个成像单元10一一对应的四个曝光组件20、显影单元30、中间转印带40、包含与各成像单元10对应设置的四个一次转印辊50(转印部件的一个示例)、二次转印辊60、定影单元70等等，其中，四个成像单元10与黑色(BK)、品红色(M)、青色(C)、黄色(Y)分别对应。
每个成像单元10包括感光鼓101(感光体的一个示例)、充电辊102(充电单元的一个示例)、清洁单元103、充电用外施电压部104及感光鼓马达105(感光鼓驱动单元的一个示例)。其中，感光鼓马达105驱动感光鼓101沿顺时钟方向或者逆时钟方向以一定速度旋转，在本发明实施例中，感光鼓马达105驱动感光鼓101沿顺时钟方向(即图1和图3所示的A1方向)旋转。
图像形成部c的图像形成过程可以包括：充电辊102使感光鼓101的表面带电，曝光组件20根据上位装置(例如计算机端)发送过来的图像数据或是图像读取部b传输过来的图像数据产生曝光信号，发射出与曝光信号相对应的激光束，曝光感光鼓101的表面，从而在感光鼓101的表面形成静电潜像。接着，显影单元30使感光鼓101的表面上的静电潜像显影为调色剂图像。然后，一次转印辊50将感光鼓101的表面上的调色剂图像一次转印到中间转印带40的表面，从而在中间转印带40的表面上形成调色剂图像。二次转印辊60将中间转印带40表面的调色剂图像二次转印到纸张。被二次转印有调色剂图像的纸张被输送到进入到定影单元70。定影单元70使调色剂图像定影在纸张上，从而排出。此外，残留在感光鼓101的表面上的调色剂由清洁单元103去除。
应该知道的是，上述的图像形成装置1为彩色图像形成装置的一个示例，在其它 实施例中，如果是单色图像形成装置，则成像单元10、曝光组件20及一次转印辊50等的数量为1个。
其中，显影单元30包括显影辊(显影结构的一个示例)301、显影用外施电压部302及显影盒303，显影用外施电压部302用于对显影辊301施加显影偏压。显影盒303用于存放显影剂。四个显影单元30的显影盒303分别用于存放黑色(BK)、品红色(M)、青色(C)、黄色(Y)的显影剂。
其中，如图3所示，每个曝光组件20包括发光部201、多棱镜202、多棱镜马达203(多棱镜驱动单元的一个示例)、多棱镜马达控制单元204、光学透镜205及传感器206。
发光部201被设置成能够射出光束，发光部201的数量可以为一个或者多个，发光部201的例子可以为激光发射二级管。在本发明实施例中，发光部201的位置是固定的。
多棱镜202可以是四棱镜、五棱镜、六棱镜等，在本实施方式中，多棱镜202为六棱镜，呈正六边形，在多棱镜202的外周面设置有6个反射面，多棱镜202被设置为能够旋转。
多棱镜马达203被固定在多棱镜202上，在多棱镜马达控制单元204的控制下，以规定的转速旋转，从而使多棱镜202旋转。在本发明实施例中，多棱镜马达控制单元204可以是非必要的，控制器a可直接控制多棱镜马达203以一定速度旋转。
光学透镜205设置于多棱镜202与感光鼓101之间，光学透镜205例如为fθ透镜，在本发明实施例中，光学透镜205的数量为两个，在本发明其它实施例中，各曝光组件20除了具有光学透镜205外，还可以具有其它一个或多个光学透镜205。
传感器206用于检测多棱镜202的相位，当多棱镜202的相位为预设相位时，向控制器a生成第一反馈信号，其中，当发光部201发射的光点刚好照射在多棱镜202的一棱的边缘时，多棱镜202的相位为预设相位。第一反馈信号用于确定多棱镜202的相位，进而确定一行扫描图像的起始像素点或末端像素点。
曝光组件20的工作原理为：控制器a将需要图像数据变为电信号，输出至发光部201，使之发射出一个光点，这光点照在多棱镜202的一棱的边上，经过光学透镜205反射到感光鼓101上，在感光鼓101上就形成的一个光点G1，控制器a再发射第二个光点G2，多棱镜202旋转一点点，这样第二个光点就照射在感光鼓101上第一个光点边，以此类推，多棱镜202的一棱扫描图像的一行，一行图像对应一行光点轨迹，感光鼓101经过扫描一行后(如图3所示，一行扫描图像对应的光点沿W方向均匀排列)，向A1方向旋转预设距离，因此，在感光鼓101上就形成了以光点为单位的静电潜像。基于上述，当多棱镜202到达预设相位时，在感光鼓101上形成一行光点轨迹中的第一个光点。
如图2所示，在本发明实施例中，控制器a与传感器206连接，传感器206具体可以为光电传感器，光电传感器设置于多棱镜202与感光鼓101之间的一侧，用于感应光信号，将光信号转换为电信号，当多棱镜202的相位为预设相位，光电传感器向控制器a发送第一反馈信号，第一反馈信号的例子可以为行同步信号。
控制器a与多棱镜马达203或者多棱镜马达控制单元204连接，用于根据不同的 图像作业类型，控制器a控制多棱镜马达203或者通过多棱镜马达203控制多棱镜马达203以不同线速度旋转，进而控制多棱镜202以不同线速度旋转。
控制器a与感光鼓马达105连接，用于根据不同的图像作业类型，控制感光鼓马达105以不同线速度旋转，进而控制感光鼓101以不同线速度旋转。
控制器a与充电用外施电压部104连接，在图像形成装置1执行打印的过程中，控制器a控制充电用外施电压部104对充电辊102施加充电偏压，使充电辊102带电，另外，在图像形成装置1执行打印的过程中，感光鼓101在感光鼓马达105的作用下旋转，与感光鼓101接触的充电辊102从动于感光鼓101而旋转，因此充电辊102使感光鼓101的表面均匀带电。
在进行打印的过程中，曝光组件20的发光部201射出光束，射出的光束通过多棱镜202的各反射面偏转，穿过光学透镜205而到达感光鼓101的表面，在感光鼓101的表面形成静电潜像。
控制器a与显影用外施电压部302连接，在进行打印的过程中，控制器a控制显影用外施电压部302对显影辊301施加显影偏压。据此，显影剂中的调色剂从显影辊301供给给感光鼓101的表面，感光鼓101的表面的静电潜像被显影为调色剂图像。
具体地，在进行打印的过程中，充电辊102使感光鼓101带电，使得感光鼓101的表面电势变为暗部电势Vd。曝光组件20发射激光以将感光鼓101曝光，感光鼓101被激光照射的区域(光点)的电势与明部电势Vl对应，不被激光照射的区域中的感光鼓101中的电势与暗部电势Vd对应。
显影用外施电压部302施加显影偏压Vdc到显影辊301，显影辊301的表面电势与显影偏压Vdc对应。在进行打印的过程中，显影偏压Vdc被控制为比暗部电势Vd高且比明部电势Vl低的值。暗部电势Vd为例如-400V，显影偏压Vdc例如为-300V，明部电势Vl为例如-100V。通过该配置，使得承载在显影辊301上的调色剂(负极性)附着到感光鼓101被激光照射的区域(明部电势Vl)，但在不被激光照射的区域(暗部电势Vd)中不附着到感光鼓101上。
现有图像形成装置，一般都有多个模式，多个模式例如可以对应在不同类型的纸张上成像，比如在A4尺寸的纸张上成像时，图像形成装置1的曝光组件20中的多棱镜202以第一速度旋转，而在A6尺寸的纸张上成像时，图像形成装置1的多棱镜202分别以第二速度旋转，其中，第二速度低于第一速度，通常来说，多棱镜202的转速与纸张的宽度呈正相关。
在进行打印作业时，光电传感器设置于感光体和曝光组件20之间的一侧，用于感应光信号以确定多棱镜202的相位，当多棱镜202的相位对应一行图像的起始像素点/末端像素点时，向图像形成装置1的控制器a反馈行同步信号，使得控制器a响应于行同步信号逐步输出该行图像/下一行图像对应的图像数据，从而保证曝光、显影的正常运行。
现有技术中，如果需要从第一模式切换到第二模式，例如从打印A4纸张作业切换到打印A6纸张作业时，图像形成装置1的控制器a会将多棱镜202的线速度由A4纸张对应的线速度切换到A6纸张对应的线速度，由于多棱镜202的线速度变化后，光电传感器需要根据光信号确定多棱镜202的相位，以输出行同步信号给控制器a， 而在多棱镜202的线速度由A4纸张对应的线速度切换到A6纸张对应的线速度之后，在光电传感器输出行同步信号给控制器a之前的这段时间内，曝光组件20需要持续曝光且控制器a无法确定多棱镜202的相位，从而会导致感光体异常曝光。为了解决此问题，现有技术中一般的做法为：完成A4纸张对应的作业之后，先将曝光组件20停止运行(即，将多棱镜202的线速度变为0)，然后重新以新的模式启动曝光组件20(即，将多棱镜202的线速度由0调整到A6对应的线速度)，但通过该方法会导致切换时间比较久，并且用户会明显感受到图像形成装置有停顿。
基于上述，本发明实施例提供一种打印作业切换方法、图像形成装置及可读存储介质，能够解决现有技术中不同类型的打印作业之间的切换过程中存在的异常曝光和切换时间比较久的问题，能够保证正常曝光且能缩短切换时长，以提高用户体验。
如图1-3所示，本发明实施例提供一种打印作业切换方法，应用于图像形成装置1，图像形成装置1包括：控制器a、曝光组件20、感光体(例如感光鼓101)及显影辊301，曝光组件20包括发光部201、多棱镜202及传感器206，多棱镜202、感光体和显影辊301在控制器a的控制下旋转，控制器a还用于控制显影辊301的显影偏压；曝光组件20还包括传感器206，传感器206用于根据发光部201产生的激光检测多棱镜202的相位，当多棱镜202的相位为预设相位时，输出第一反馈信号至控制器a。
请参阅图4，一种打印作业切换方法，包括：
步骤S101：当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，控制器控制显影辊的电势由第一电势调整为第二电势，以及控制发光部停止产生激光，其中，第一打印作业、第二打印作业对应多棱镜的角速度分别为第一速度、第二速度，第一速度不同于第二速度，第二电势的绝对值低于感光体被激光照射的区域的电势的绝对值；
步骤S102：控制器将多棱镜的角速度由第一速度切换到第二速度；
步骤S103：控制器控制发光部重新产生激光；
步骤S104：控制器接收传感器生成的第一反馈信号，第一反馈信号用于确定多棱镜的相位，进而确定一行扫描图像的起始像素点或末端像素点；
步骤S105：控制器调整显影辊的电势恢复为第一电势，第一电势的绝对值高于感光体被激光照射的区域的电势的绝对值。
可以理解，本发明实施例通过在接收到第一反馈信号之前先控制所述显影辊的电势由第一电势调整为绝对值低于所述感光体被激光照射的区域的电势的绝对值的第二电势以及暂停发光部停止产生激光，以分别达到暂停显影、曝光的目的，待所述多棱镜的角速度达到目标值(即第二速度)再产生激光，以及待所述多棱镜的相位到达一行扫描图像的起始像素点或末端像素点对应的相位之后，再恢复为显影辊的电势为第一电势，进而再进行正常的显影，因此，可以直接切换多棱镜的角速度至目标线速度，不必先将曝光组件停止运行(即，将多棱镜的角速度变为0)，然后重新以新的模式启动曝光组件(即，将多棱镜的角速度由0调整到A6对应的线速度)，从而减少了切换作业所需的时间，同时，由于在调整多棱镜的角速度之前暂停了曝光，在确定行同步信号之前，暂停了显影辊的显影操作，避免了异常曝光和异常显影。
下面对本发明提供的打印作业切换方法进行具体的说明。
本发明实施例提供的打印作业切换方法可以应用于以下场景：
场景一：不同用户在同一时间段内下发两个不同的打印作业至图像形成装置，两个不同的打印作业对应不同多棱镜202的线速度。
例如，第一用户与第二用户分别在同一时间下发第一打印作业和第二打印作业至图像形成装置。
又例如，第一用户先下发第一打印作业至图像形成装置，在图像形成装置完成第一打印作业时或者图像形成装置完成第一打印作业之前，第二用户再下发第二打印作业至图像形成装置。
场景二：同一用户在同一时间段内下发两个不同的打印作业至图像形成装置，两个不同的打印作业对应不同多棱镜202的线速度。
例如，第一用户同时下发第一打印作业和第二打印作业至图像形成装置。
又例如，第一用户先下发第一打印作业至图像形成装置，在图像形成装置完成第一打印作业时或者图像形成装置完成第一打印作业之前，第一用户再下发第二打印作业至图像形成装置。
场景三：同一用户下发打印作业至图像形成装置，打印作业包括第一打印作业和第二打印作业，即打印作业中的其中一部分页面作为第一打印作业，打印作业中的其中一部分页面作为第二打印作业。
在以上场景中，两个不同的打印作业的例子可以为不同纸张类型的打印作业，例如第一打印作业对应的纸张类型为A4纸张，第二打印作业对应的纸张类型为A6纸张，纸张类型信息可以携带在作业信息中。
针对步骤S101：当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，控制器a控制显影辊301的电势由第一电势调整为第二电势，以及控制发光部停止产生激光，其中，第一打印作业、第二打印作业对应多棱镜的角速度分别为第一速度、第二速度，第一速度不同于第二速度，第二电势的绝对值低于感光体被激光照射的区域的电势的绝对值；
其中，当图像形成装置1在完成第一打印作业之前或者图像形成装置1在完成第一打印作业的时候，如果接收到第二打印作业，那么，当图像形成装置1完成第一打印作业时，确定由第一类型的第一打印作业切换至第二类型的第二打印作业。
其中，第一打印作业和第二打印作业可以由终端侧下发，或者由图像形成装置11的操作部下发，经由图像读取部b进行扫描生成图像数据。
其中，第一打印作业和第二打印作业可以对应不同类型的纸张，纸张类型信息可以携带在第一打印作业和第二打印作业对应的设置信息中。例如，第一打印作业对应A4纸张，第二打印作业对应A6纸张。其中，第一打印作业、第二打印作业对应多棱镜202的线速度分别为第一速度、第二速度，第一速度不同于第二速度。在图像形成装置1执行第一打印作业时，控制器a通过多棱镜马达203控制多棱镜202的线速度为第一速度。
其中，控制器a控制显影单元的电势由第一电势调整为第二电势，其目的是为了使得承载在显影辊301上的调色剂(负极性)不附着到感光鼓101被激光照射的区域(明 部电势Vl)，从而停止显影的过程。其中，第一电势对应上文中的显影偏压Vdc，显影偏压Vdc例如为-300V，第二电势可以为-50V，感光体被激光照射的区域的电势对应上文中的明部电势Vl，感光体不被激光照射的区域的电势对应上文中的暗部电势Vd。
其中，控制器a通过控制显影用外施电压部302对显影辊301施加的显影偏压从而调整显影单元的电势由第一电势调整为第二电势。
其中，控制器a与发光部201，用于控制发光部201发射激光。
其中，控制器a控制显影辊301的电势由第一电势调整为第二电势，以及控制发光部201停止产生激光的顺序本发明不做限定，即控制器a可以先控制显影辊301的电势由第一电势调整为第二电势，再控制发光部201停止产生激光，或者先控制发光部201停止产生激光，再控制显影辊301的电势由第一电势调整为第二电势，或者同时控制显影辊301的电势由第一电势调整为第二电势以及发光部201停止产生激光。
针对步骤S102：控制器将多棱镜的角速度由第一速度切换到第二速度；
作为一种示例，控制器a可以根据不同的纸张类型信息确定感光鼓101和多棱镜202的线速度，例如，根据第一打印作业对应的纸张类型信息确定执行第一打印作业时感光鼓101和多棱镜202的线速度，根据第二打印作业对应的纸张类型信息确定执行第二打印作业时感光鼓101和多棱镜202的线速度。
在本实施例中，第一打印作业、第二打印作业对应多棱镜202的线速度分别为第一速度、第二速度，控制器a与多棱镜马达203或者多棱镜马达控制单元204连接，用于根据不同的图像作业类型，输出不同的电压参数控制多棱镜马达203或者通过多棱镜马达控制单元204控制多棱镜马达203以不同线速度旋转，从而实现将将多棱镜202的线速度由第一速度切换到第二速度。
针对步骤S103：控制器控制发光部重新产生激光。
其中，步骤S103的目的在于使得传感器206能够根据激光的光信号检测多棱镜202的相位。
其中，控制器a与发光部201，用于控制发光部201发射激光。
针对步骤S104：控制器接收传感器生成的第一反馈信号，第一反馈信号用于确定多棱镜的相位，进而确定一行扫描图像的起始像素点或末端像素点；
当多棱镜202的相位为预设相位时，向控制器a生成第一反馈信号，其中，当发光部201发射的光点刚好照射在多棱镜202的一棱的边缘时，多棱镜202的相位为预设相位。第一反馈信号用于确定多棱镜202的相位，进而确定一行扫描图像的起始像素点或末端像素点。
传感器206具体可以为光电传感器，光电传感器设置于多棱镜202与感光鼓101之间的一侧，用于感应光信号，将光信号转换为电信号，当多棱镜202的相位为预设相位，光电传感器向控制器a发送第一反馈信号，第一反馈信号的例子可以为行同步信号。控制器a接收到第一反馈信号后，确定多棱镜202的相位，逐步输出该行图像/下一行图像对应的图像数据，从而保证曝光、显影的正常运行。
针对步骤S105：控制器调整显影辊的电势恢复为第一电势，第一电势的绝对值高于感光体被激光照射的区域的电势的绝对值。
其中，感光体的例子可以为感光鼓101。
其中，控制器a控制显影单元的电势由第二电势恢复为第一电势，其目的是为了使得承载在显影辊301上的调色剂(负极性)附着到感光鼓101被激光照射的区域(明部电势Vl)，从而重新启动显影的过程。
在本发明实施例中，为了进一步避免显影异常，控制器a调整显影辊301的电势为第一电势，包括：当感光体被激光照射过的区域转过显影辊301的位置之后，调整显影辊301的电势恢复为第一电势，从而使得感光体被激光照射过的区域不进行显影，避免显影剂异常。
在本发明实施例中，打印作业切换方法还包括：控制器a控制感光体的线速度由第三速度切换到第四速度，其中，第一打印作业对应感光体的线速度为第三速度，第二打印作业对应感光体的线速度为第四速度，第三速度不同于第四速度。
其中，控制器a控制感光体的线速度由第三速度切换到第四速度可以在确定由第一类型的第一打印作业切换至第二类型的第二打印作业后的任一步骤之前或者之后。
在本实施例中，第一打印作业、第二打印作业对应感光体的线速度分别为第三速度、第四速度，感光体具体为感光鼓101，控制器a与感光鼓101对应的感光鼓马达105连接，用于根据不同的图像作业类型，输出不同的电压参数控制感光鼓马达105以不同线速度旋转，从而实现将感光鼓101的线速度由第三速度切换到第四速度。
下面结合应用场景列举以下本发明实施例的提供的打印作业切换方法的几种实现过程。
请参阅图5，实现过程一：
步骤S201：图像形成装置接收打印作业，执行步骤S202；
步骤S202：图像形成装置对打印作业进行解析，判断打印作业是否包括至少两种作业类型，如果是，则执行步骤S203，如果否，则执行步骤S204；
打印作业包括至少两种作业类型例如：打印作业中包括A4纸对应的作业类型和A6纸对应的作业类型，两种作业类型对应不同的多棱镜202线速度和不同的感光鼓101线速度。
步骤S203：在进行不同作业类型的切换过程中，执行图4所示的步骤S101-S105。
步骤S204：按照一种作业类型执行打印作业。
请参阅图7，实现过程二：
步骤S301：接收第一打印作业，第一打印作业对应第一作业类型，执行步骤S302；
步骤S302：按照第一作业类型处理第一打印作业，执行步骤S303；
步骤S303：判断第一打印作业的最后一页是否完成，如果是，则执行步骤S304，如果否，则进行执行步骤S303；
步骤S304：判断在执行完第一打印作业前或者执行完第一打印作业时是否接收到新的打印作业(第二打印作业)，如果是，则执行S305，如果否，则结束本次流程；
步骤S305：解析第二打印作业对应的作业类型，执行步骤S306；
步骤S306：第二打印作业与第一作业对应的作业类型是否相同，即两种作业类型对应的多棱镜线速度是否相同，如果是，则执行步骤S307，如果否，则执行步骤S308；
步骤S307：按照第一作业类型处理第二打印作业；
步骤S308：在进行不同作业类型的切换过程中，执行图4所示的步骤S101-S105；
步骤S309：按照第二作业类型处理第二打印作业。
可以理解，本发明实施例通过上述的打印作业切换方法能够减少图像形成装置在多棱镜202速度切换时的停顿，实现图像形成装置1在多棱镜202速度切换时的无缝切换。
请参阅图1-3，本申请实施例提供了一种图像形成装置1，包括：控制器a、曝光组件20、感光体及显影辊301，曝光组件20包括发光部201及多棱镜202，多棱镜202、感光体和显影辊301在控制器a的控制下旋转，控制器a还用于控制显影辊301的电势；曝光组件20还包括传感器206，传感器206用于根据发光部201产生的激光检测多棱镜202的相位，当多棱镜202的相位为预设相位时，输出第一反馈信号至控制器a；
控制器a还用于：
当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，控制显影辊301的电势由第一电势调整为第二电势，以及控制发光部201停止产生激光，其中，第一打印作业、第二打印作业对应多棱镜202的线速度分别为第一速度、第二速度，第一速度不同于第二速度，第二电势的绝对值低于感光体被激光照射的区域的电势的绝对值；
控制发光部201停止产生激光；
将多棱镜202的线速度由第一速度切换到第二速度；
控制发光部201重新产生激光；
接收传感器206生成的第一反馈信号，第一反馈信号用于确定多棱镜202的相位，进而确定一行扫描图像的起始像素点或末端像素点；
调整显影辊301的电势恢复为第一电势，第一电势的绝对值高于感光体被激光照射的区域的电势的绝对值。
在一种可行的实现方式中，控制器a还用于：
控制感光体的线速度由第三速度切换到第四速度，其中，第一打印作业对应感光体的线速度为第三速度，第二打印作业对应感光体的线速度为第四速度，第三速度不同于第四速度。
结合第二方面，在一种可行的实现方式中，控制器a调整显影辊301的电势为第一电势，包括：
当感光体被激光照射过的区域转过显影辊301的位置之后，调整显影辊301的电势恢复为第一电势。
结合第二方面，在一种可行的实现方式中，第一打印作业和第二打印作业对应同一用户或不同用户在同一时间段内发送的两个不同的打印作业，或者，第一打印作业和第二打印作业对应同一打印作业内的不同页面。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的装置、模块和/或单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
本发明实施例还提供了一种计算机可读存储介质，计算机可读存储介质包括存储 的程序，其中，在程序运行时控制存储介质所在设备执行本发明任一个或多个实施例中的打印作业切换方法，为避免重复，此处不一一赘述。
本发明实施例还提供了一种计算机程序产品，当计算机程序产品在计算机上运行时，使得计算机执行如本发明任一个或多个实施例中的打印作业切换方法的步骤，为避免重复，此处不一一赘述。
请参阅图7，本发明实施例还提供了一种电子设备50，该实施例的电子设备50包括：处理器51、存储器52以及存储在存储器52中并可在处理器51上运行的计算机程序53，该计算机程序53被处理器51执行时实现实施例中的打印作业切换方法，为避免重复，此处不一一赘述。或者，该计算机程序被处理器51执行时实现实施例中图像形成装置1中各模型/单元的功能，为避免重复，此处不一一赘述。
电子设备50可以是桌上型计算机、笔记本、掌上电脑及云端服务器等计算设备。电子设备50可包括但不仅限于处理器51、存储器52。本领域技术人员可以理解，图7仅仅是电子设备50的示例，并不构成对电子设备50的限定，可以包括比图示更多或更少的部件，或者组合某些部件，或者不同的部件，例如电子设备还可以包括输入输出设备、网络接入设备、总线等。
所称处理器51可以是中央处理单元(Central Processing Unit，CPU)，还可以是其它通用处理器、数字信号处理器(Digital Signal Processor，DSP)、专用集成电路(Application Specific Integrated Circuit，ASIC)、现场可编程门阵列(Field-Programmable Gate Array，FPGA)或者其它可编程逻辑器件、分立门或者晶体管逻辑器件、分立硬件组件等。通用处理器可以是微处理器或者该处理器也可以是任何常规的处理器等。
存储器52可以是电子设备50的内部存储单元，例如电子设备50的硬盘或内存。存储器52也可以是电子设备50的外部存储设备，例如电子设备50上配备的插接式硬盘，智能存储卡(Smart Media Card,SMC)，安全数字(Secure Digital,SD)卡，闪存卡(Flash Card)等。进一步地，存储器52还可以既包括电子设备50的内部存储单元也包括外部存储设备。存储器52用于存储计算机程序以及电子设备所需的其它程序和数据。存储器52还可以用于暂时地存储已经输出或者将要输出的数据。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的系统，装置和单元的具体工作过程，可以参考前述方法实施例中的对应过程，在此不再赘述。
在本发明所提供的几个实施例中，应该理解到，所揭露的系统，装置和方法，可以通过其它的方式实现。例如，以上所描述的装置实施例仅仅是示意性的，例如，单元的划分，仅仅为一种逻辑功能划分，实际实现时可以有另外的划分方式，例如，多个单元或组件可以结合或者可以集成到另一个系统，或一些特征可以忽略，或不执行。另一点，所显示或讨论的相互之间的耦合或直接耦合或通信连接可以是通过一些接口，装置或单元的间接耦合或通信连接，可以是电性，机械或其它的形式。
作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部单元来实现本实施例方案的目的。
另外，在本发明各个实施例中的各功能单元可以集成在一个处理单元中，也可以 是各个单元单独物理存在，也可以两个或两个以上单元集成在一个单元中。上述集成的单元既可以采用硬件的形式实现，也可以采用硬件加软件功能单元的形式实现。
上述以软件功能单元的形式实现的集成的单元，可以存储在一个计算机可读取存储介质中。上述软件功能单元存储在一个存储介质中，包括若干指令用以使得一台计算机装置(可以是个人计算机，服务器，或者网络装置等)或处理器(Processor)执行本发明各个实施例方法的部分步骤。而前述的存储介质包括：U盘、移动硬盘、只读存储器(Read-Only Memory，ROM)、随机存取存储器(Random Access Memory，RAM)、磁碟或者光盘等各种可以存储程序代码的介质。
以上仅为本发明的较佳实施例而已，并不用以限制本发明，凡在本发明的精神和原则之内，所做的任何修改、等同替换、改进等，均应包含在本发明保护的范围之内。
所属领域的技术人员可以清楚地了解到，为描述的方便和简洁，上述描述的电子设备、计算机可读存储介质和计算机程序产品的具体工作过程及原理，可以参考前述联动开关机电路实施例中的对应内容，在此不再赘述。
以上，仅为本申请的具体实施方式，任何熟悉本技术领域的技术人员在本申请揭露的技术范围内，可轻易想到变化或替换，都应涵盖在本申请的保护范围之内。本申请的保护范围应以权利要求的保护范围为准。

Claims (11)

  1. 一种打印作业切换方法，应用于图像形成装置，所述图像形成装置包括：控制器、曝光组件、感光体及显影辊，所述曝光组件包括发光部及多棱镜，所述多棱镜、所述感光体及所述显影辊在所述控制器的控制下旋转，所述控制器还用于控制所述显影辊的电势；其特征在于，所述曝光组件还包括传感器，所述传感器用于根据所述发光部产生的激光检测所述多棱镜的相位，当所述多棱镜的相位为预设相位时，输出第一反馈信号至所述控制器，所述方法包括：
    当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，所述控制器控制所述显影辊的电势由第一电势调整为第二电势，以及控制所述发光部停止产生激光，其中，所述第一打印作业、所述第二打印作业对应所述多棱镜的角速度分别为第一速度、第二速度，所述第一速度不同于所述第二速度，所述第二电势的绝对值低于所述感光体被激光照射的区域的电势的绝对值；
    所述控制器控制所述发光部停止产生激光；
    所述控制器将所述多棱镜的角速度由所述第一速度切换到所述第二速度；
    所述控制器控制所述发光部重新产生激光；
    所述控制器接收所述传感器生成的第一反馈信号，所述第一反馈信号用于确定所述多棱镜的相位，进而确定一行扫描图像的起始像素点或末端像素点；
    所述控制器调整所述显影辊的电势恢复为所述第一电势，所述第一电势的绝对值高于所述感光体被激光照射的区域的电势的绝对值。
  2. 根据权利要求1所述的打印作业切换方法，其特征在于，在所述控制器确定由第一类型的第一打印作业切换为第二类型的第二打印作业之后，所述方法还包括：
    所述控制器控制所述感光体的线速度由第三速度切换到第四速度，其中，所述第一打印作业对应所述感光体的线速度为第三速度，所述第二打印作业对应所述感光体的线速度为第四速度，所述第三速度不同于所述第四速度。
  3. 根据权利要求1所述的打印作业切换方法，其特征在于，所述控制器调整所述显影辊的电势为第一电势，包括：
    当所述感光体被激光照射过的区域转过所述显影辊的位置之后，调整所述显影辊的电势恢复为所述第一电势。
  4. 根据权利要求1所述的打印作业切换方法，其特征在于，所述第一打印作业和所述第二打印作业对应同一用户或不同用户在同一时间段内发送的两个不同的打印作业，或者，所述第一打印作业和所述第二打印作业对应同一打印作业内的不同页面。
  5. 一种图像形成装置，包括：控制器、曝光组件、感光体及显影辊，所述曝光组件包括发光部及多棱镜，所述多棱镜、所述感光体及所述显影辊在所述控制器的控制下旋转，所述控制器还用于控制所述显影辊的电势；其特征在于，所述曝光组件还包括传感器，所述传感器用于根据所述发光部产生的激光检测所述多棱镜的相位，当所述多棱镜的相位为预设相位时，输出第一反馈信号至所述控制器；
    所述控制器还用于：
    当确定由第一类型的第一打印作业切换至第二类型的第二打印作业时，控制所述显影辊的电势由第一电势调整为第二电势，以及控制所述发光部停止产生激光，其中，所述第一打印作业、所述第二打印作业对应所述多棱镜的角速度分别为第一速度、第二速度，所述第一速度不同于所述第二速度，所述第二电势的绝对值低于所述感光体被激光照射的区域的电势的绝对值；
    控制所述发光部停止产生激光；
    将所述多棱镜的角速度由所述第一速度切换到所述第二速度；
    控制所述发光部重新产生激光；
    接收所述传感器生成的第一反馈信号，所述第一反馈信号用于确定所述多棱镜的相位，进而确定一行扫描图像的起始像素点或末端像素点；
    调整所述显影辊的电势恢复为所述第一电势，所述第一电势的绝对值高于所述感光体被激光照射的区域的电势的绝对值。
  6. 根据权利要求5所述的图像形成装置，其特征在于，所述控制器还用于：
    控制所述感光体的线速度由第三速度切换到第四速度，其中，所述第一打印作业对应所述感光体的线速度为第三速度，所述第二打印作业对应所述感光体的线速度为第四速度，所述第三速度不同于所述第四速度。
  7. 根据权利要求5所述的图像形成装置，其特征在于，所述控制器调整所述显影辊的电势为第一电势，包括：
    当所述感光体被激光照射过的区域转过所述显影辊的位置之后，调整所述显影辊的电势恢复为所述第一电势。
  8. 根据权利要求5所述的图像形成装置，其特征在于，所述第一打印作业和所述第二打印作业对应同一用户或不同用户在同一时间段内发送的两个不同的打印作业，或者，所述第一打印作业和所述第二打印作业对应同一打印作业内的不同页面。
  9. 一种电子设备，其特征在于，所述电子设备包括存储器及处理器，所述存储器中存储有计算机程序，所述处理器与所述存储器连接，所述处理器执行计算机程序以实现如权利要求1-4中任一项所述的打印作业切换方法。
  10. 一种可读存储介质，其特征在于，所述可读存储介质包括计算机指令，当所述计算机指令在电子设备上运行时，使得所述电子设备执行如权利要求1-4中任一项所述的打印作业切换方法。
  11. 一种计算机程序产品，其特征在于，当所述计算机程序产品在电子设备上运行时，使得所述电子设备执行如权利要求1-4中任一项所述的打印作业切换方法的步骤。
PCT/CN2021/095691 2020-07-24 2021-05-25 打印作业切换方法、图像形成装置及可读存储介质 WO2022016986A1 (zh)

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