Imaging device and imaging method thereof, printer

Abstract

The present application discloses an imaging device, an imaging method thereof, and a printer, the imaging device including: one or more M rotatable photosensitive drums, each configured to expose a light receiving area including a plurality of sub-light receiving areas arranged along an axial direction to form an electronic latent image in the light receiving area; at least one display chip, each of which is arranged along a first direction and includes at least two light emitting areas corresponding one-to-one to the sub-light receiving areas; at least one projection lens, each configured to image the corresponding display chip; and at least one light beam deflection system, each configured to deflect an image formed by the corresponding projection lens of each of the light emitting areas in the display chip to the corresponding sub-light receiving area, corresponding one-to-one to the at least one display chip.

Description

[Technical field]

[0001] This disclosure claims priority to a Chinese patent application bearing application number 202210729934.3, filed with the China Patent Office on June 24, 2022, the entire contents of which are incorporated herein by reference.

[0002] The present application relates to the technical field of printers, for example, imaging devices and imaging methods thereof, and printers. [Background technology]

[0003] Printers have important applications in modern society. The printing process of a printer mainly includes four stages: charging, exposing, developing and printing. Printers can be mainly divided into laser printers and LED printers. LED printers have the advantages of fast printing speed, good printing image quality, long service life, high flexibility, energy saving and environmental friendliness, etc., so they are being increasingly widely used.

[0004] However, as shown in Fig. 1, which is a structural schematic diagram of an imaging device in a printer in the related art, the imaging device includes a display chip 1' and a photosensitive drum 2'. Of course, the imaging device further includes a lens array, the display chip 1' includes one or more rows of LED pixels, and the LED pixels in the display chip 1' are directly imaged onto the photosensitive drum 2' by a projection lens, and the resolution of the image is related to the size of the microlens and the pixel interval, so that the resolution of the imaging device in the related art is limited and the utilization rate of light energy is not high. Summary of the Invention

[0005] The present application provides an imaging device, imaging method and printer that can achieve high resolution printing with a low resolution pixel array and can increase the utilization rate of the light-emitting area of ​​a display chip in the imaging device.

[0006] According to one aspect of the present application, one or more M number of rotatable photosensitive drums, each configured to expose a light receiving area having a plurality of sub-light receiving areas arranged along an axial direction to form an electronic latent image in the light receiving area; At least one display chip, each of which has at least two light-emitting regions arranged along a first direction, each of which corresponds to the sub-light-receiving area one-to-one, and each of which is provided with a plurality of light-emitting units; at least one projection lens in one-to-one correspondence with the at least one display chip, each projection lens being configured to image onto a corresponding one of the display chips; Each of the light-emitting regions in the display chip Light emitted by and at least one light beam deflection system in one-to-one correspondence with the at least one display chip, configured to deflect an image focused by the corresponding projection lens onto the corresponding sub-light receiving area.

[0007] According to another aspect of the present application, there is provided a toner cartridge and a printer comprising the imaging apparatus described above.

[0008] According to another aspect of the present application, there is provided an imaging method for an imaging device, the imaging device being the imaging device described above, wherein all of the light-emitting units of the display chips are arranged in a matrix, all of the light-emitting regions are imaged as a plurality of pixel points arranged in a matrix along row and column directions in the sub-light-receiving area, and angles formed between the row and column directions and axial directions of all of the photosensitive drums are not 90 degrees, The imaging method comprises: Rotating all of the preset latent image lines of the photosensitive drum, which are parallel to the axial direction of the photosensitive drum, to a position corresponding to one imaging pixel row in all of the light receiving areas, the imaging pixel row including a plurality of imaging pixels, each of which is the pixel point or a superposition of at least two pixel points around the pixel point, which are parallel to the axial direction of the photosensitive drum; turning on all the display chips to expose a portion of the preset latent image line using the imaging pixel rows; rotating the photosensitive drum to move the preset latent image line, and turning on all of the display chips when the preset latent image line is moved to a next imaging pixel row. [Brief description of the drawings]

[0009] [Figure 1] FIG. 1 is a structural schematic diagram of an imaging device in a printer according to the related art. [Diagram 2] FIG. 2 is a structural schematic diagram of an imaging device according to an embodiment of the present application. [Diagram 3] FIG. 2 is a structural schematic diagram of another imaging device according to an embodiment of the present application. [Figure 4] FIG. 4 is a side view of FIG. [Diagram 5] FIG. 4 is a plan view of FIG. [Figure 6] FIG. 2 is a structural schematic diagram of another imaging device according to an embodiment of the present application. [Figure 7] FIG. 2 is a structural schematic diagram of another imaging device according to an embodiment of the present application. [Figure 8] FIG. 2 is a structural schematic diagram of another imaging device according to an embodiment of the present application. [Figure 9] FIG. 2 is a structural schematic diagram of another imaging device according to an embodiment of the present application. [Figure 10] 2A and 2B are schematic diagrams illustrating the structures of a main image distributing mirror and a sub-image distributing mirror according to an embodiment of the present application. [Figure 11] 1 is a schematic diagram showing the structure of a region image dividing mirror according to an embodiment of the present application; [Figure 12] FIG. 2 is a schematic diagram showing the region division structure of a display chip according to an embodiment of the present application. [Figure 13] FIG. 2 is a flow diagram of an imaging method of an imaging device according to an embodiment of the present application. [Figure 14] 2 is a schematic diagram of a relationship between a photosensitive drum and imaging pixels during imaging in an imaging device according to an embodiment of the present application. FIG. [Figure 15] FIG. 2 is a schematic diagram of a test page according to an embodiment of the present application. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0010] Hereinafter, the technical aspects of the embodiments of the present application will be described clearly and completely with reference to the drawings in the embodiments of the present application, and it is clear that the described embodiments are some of the embodiments of the present application and not all of the embodiments. In addition, the terms "first", "second", etc. in the specification and claims of the present application and the drawings are not necessarily used to describe a specific order or order, but are used to distinguish similar objects. It should be understood that the data used in this manner can be replaced where appropriate, and thus the embodiments of the present application described herein can be performed in an order other than that shown or described herein. In addition, the terms "comprise" and "have" and any variations thereof are intended to cover a non-exclusive inclusion, for example, including a process, method, system, product, or device of a series of steps or units, and are not necessarily limited to those steps or units listed, and may include other steps or units that are not listed or are inherent to these processes, methods, products, or devices.

[0011] FIG. 2 is a structural schematic diagram of an imaging device according to an embodiment of the present application. Referring to FIG. 2, the imaging device includes M rotatable photosensitive drums 2, at least one display chip 1, at least one projection lens corresponding to the at least one display chip 1, and at least one light beam deflection system 3 corresponding to the at least one display chip 1. The photosensitive drum 2 is configured to expose the light-receiving area of ​​the photosensitive drum 2 to light to form an electronic latent image on the light-receiving area of ​​the photosensitive drum 2, where M is 1 or more, and The photosensitive area includes a plurality of sub-light receiving areas arranged along the axial direction of the photosensitive drum 2, and the plurality of sub-light receiving areas are joined together to form a light receiving area. Each display chip includes at least two light emitting regions arranged along a first direction, and the at least two light emitting regions correspond one-to-one to the corresponding plurality of sub-light receiving areas of the M number of photosensitive drums, and each light emitting region is provided with a plurality of light emitting units. The projection lens is configured to form an image on the display chip, and the light beam deflection system 3 is configured to deflect the light emitting regions of the display chip 1. Light emitted byThe projection lens is configured to deflect the image formed by the projection lens onto the corresponding sub-light receiving area.

[0012] In this embodiment, the angle between the first direction and the axial direction of the photosensitive drum may be any value.

[0013] Preferably, the imaging device is applicable to a printer, and the display chip 1 is equipped with a plurality of light-emitting units. The workflow of the printer may include the following: After the printer is powered on and started, the rotation of the photosensitive drum 2 is controlled according to the received print task. The charging roller above the photosensitive drum 2 charges the selenium material on the surface of the photosensitive drum 2, and after the charging is completed, the entire surface of the photosensitive drum 2 becomes charged. After the response position on the photosensitive drum 2 rotates to the light-receiving area, the display chip 1 turns on, and the emitted light beam irradiates the surface of the photosensitive drum 2, and since selenium is a semiconductor material, it becomes a conductor after being irradiated by the light beam. The charge carried by the pixel points corresponding to the irradiated part of the light beam disappears, and the corresponding charge of the part not irradiated by the light beam still exists. In this way, an electrostatic latent image with uneven charge is formed on the entire surface of the photosensitive drum. When the photosensitive drum 2 continues to rotate and reaches the toner cartridge position, the toner is a ferromagnetic material and is not charged, and the surface of the photosensitive drum 2 is negatively charged, so the toner transported through the developing roller is attracted to the charged portion of the surface of the photosensitive drum 2, and the entire printing image appears on the photosensitive drum 2. And the printing paper moves along the paper running direction, and the transfer roller below the photosensitive drum 2 is charged, and when the paper moves between them, the toner on the surface of the photosensitive drum 2 is attracted to the paper by the action of the transfer roller. When the paper moves to the fuser, the fuser heats the toner, and the toner is fixed on the surface of the paper after melting to form a real printing image. Finally, the photosensitive drum 2 rotates to the position of the static electricity removal lamp, and the static electricity removal lamp irradiates the photosensitive drum 2, and after the irradiation is completed, all the charges on the surface of the photosensitive drum 2 are removed, and after the cleaner is cleaned, the entire printing flow is completed.

[0014] In this embodiment, the imaging device may have one photosensitive drum 2 and be capable of printing grayscale images, or may have four photosensitive drums configured to attract toners of different colors and be capable of color printing. As shown in FIG. 2, exemplarily, the display chip 1 has three light-emitting areas, namely, a first light-emitting area 11, a second light-emitting area 12, and a third light-emitting area 13, and correspondingly, the photosensitive drum 2 has three sub-light-receiving areas, namely, a first sub-light-receiving area 21, a second sub-light-receiving area 22, and a third sub-light-receiving area 23, and at least two light-emitting areas correspond one-to-one to the corresponding multiple sub-light-receiving areas of the M photosensitive drums, which means that the number of light-emitting areas in the display chip is the same as the total number of the sub-light-receiving areas in the M photosensitive drums, and one light-emitting area corresponds to one sub-light-receiving area. In the same photosensitive drum 2, the light-receiving area may be formed by joining multiple sub-light-receiving areas. The projection lens can form an image on each light-emitting region of the display chip 1, and the projection lens projects and forms an image on all the light-emitting regions of the display chip. 1 Each of the light-emitting regions in FIG. 2 can be imaged by the light beam deflection system 3 after being imaged by the projection lens, and the images corresponding to different light-emitting regions are imaged at different positions on the light beam deflection system 3, and then are deflected by the light beam deflection system 3 and emitted to the corresponding sub-light-receiving areas. For example, the image corresponding to the first light-emitting region 11 in FIG. 2 is imaged by the light beam deflection system 3. 3 The image corresponding to the second light-emitting area 12 is deflected to the first sub-light-receiving area 21 after passing through the light beam deflection system 3 The image corresponding to the third light-emitting area 13 is deflected to the second sub-light-receiving area 22 after passing through the light beam deflection system 3and then deflected to the third sub-light-receiving area 23. As can be seen from this, in this embodiment, all the light-emitting areas on the display chip 1 can be imaged on the light-receiving area of ​​the photosensitive drum 2, and one electrostatic latent image line in the axial direction of the photosensitive drum is formed by joining the corresponding images of different light-emitting areas, thereby realizing high-resolution printing with a low-resolution pixel array and greatly improving the utilization rate of the light-emitting area on the display chip 1. Note that the light-receiving area of ​​the photosensitive drum indicates that the light beam can be irradiated onto the surface of the photosensitive drum in the light-receiving area, and the photosensitive drum can be exposed when the corresponding position rotates to the light-receiving area, and the light-receiving area can be limited by a fixed slit, and the slit is fixed and does not move when the photosensitive drum rotates.

[0015] The imaging device adopted in the technical aspect of this embodiment is provided with a light beam deflection system, which enables all images corresponding to all light-emitting areas of the display chip to be imaged onto the photosensitive drum, thereby realizing high-resolution printing with a low-resolution pixel array, greatly increasing the utilization rate of the light-emitting areas of the display chip, and increasing the width of the latent image on the photosensitive drum.

[0016] In addition, the imaging device may further include a correction lens, which is disposed at the position of the light receiving area and deflects the light emitted by the light beam deflection system 3 so that it is incident on the photosensitive drum almost perpendicularly to form an image, thereby ensuring the uniformity of the size of the imaged pixels on the photosensitive drum. Of course, if the depth of field of the selected projection lens is large and the image sizes of the imaged pixels at different positions on the photosensitive drum are almost the same, it is not necessary to use the correction lens.

[0017] Preferably, Figure 3 is a structural schematic diagram of another imaging equipment according to an embodiment of the present application, and Figure 4 is a side view of Figure 3. Referring to Figures 3 and 4, the light beam deflection system 3 includes M light beam deflection modules 31 corresponding one-to-one to the M photosensitive drums, each light beam deflection module 31 includes at least two reflective mirrors, each reflective mirror corresponds to one light-emitting area on the display chip 1, the reflective mirrors have a rotation angle between them in a first preset range and a tilt angle in a second preset range relative to the photosensitive drum, and the reflective mirrors are used to deflect the image formed by the projection lens of the corresponding light-emitting area to the corresponding sub-light-receiving area.

[0018] In one embodiment, the rotation angle of the reflecting mirror 312 with respect to the photosensitive drum 2 may be 0. Therefore, the first preset range may include 0.

[0019] In one embodiment, the tilt angle is related to the included angle Q between the optical axis of the projection lens and the normal to the plane where the slit of the photosensitive surface is located, and the tilt angle may be approximately equal to half the included angle Q. In order to reduce the volume of the system as much as possible, Q is usually set to 5 to 10 degrees. Therefore, the second preset range may be 2.5 to 5 degrees.

[0020] In one embodiment, the rotation angle of the reflecting mirror 311 with respect to the photosensitive drum 2 is

[0021]

number

[0022] and the inclination angle of the reflecting mirror 311 with respect to the photosensitive drum is

[0023]

number

[0024] It is.

[0025]

number

[0026] The value of is

[0027]

number

[0028] Fulfilling In this case, W is the width of the photosensitive area of ​​the photosensitive drum, h is the distance from the center of the reflecting mirror 312 to the photosensitive drum, and atan is the arctangent function. For example, when printing on A4 paper, when the width of the photosensitive area of ​​the photosensitive drum is W=210 mm and h=100 mm,

[0029]

number

[0030] =27.7 degrees.

[0031] In one embodiment, the magnitude of the tilt angle of the reflecting mirror 311 is

[0032]

number

[0033] It is.

[0034] In one embodiment, the rotation angle and tilt angle of the third reflecting mirror 313 are

[0035]

number

[0036] and

[0037]

number

[0038] may be also possible.

[0039] This embodiment takes one display chip 1 and one photosensitive drum 2 as an example, in which the light beam deflection system includes one light beam deflection module, and the number of light beam deflection modules is the same as the number of photosensitive drums, and when the number of photosensitive drums is four, the number of light beam deflection modules is also four accordingly. Each light beam deflection module 31 includes at least two reflecting mirrors, and this embodiment takes as an example that the light beam deflection module 31 includes a first reflecting mirror 311, a second reflecting mirror 312, and a third reflecting mirror 313. And it takes as an example that the display chip 1 includes three light-emitting regions, and the light-receiving area of ​​the photosensitive drum 2 includes three sub-light-receiving areas. The light beam after the first light-emitting region is imaged by the projection lens is emitted to the first reflecting mirror 311, and is deflected by the first reflecting mirror 311 and enters the first sub-light-receiving area of ​​the photosensitive drum via the correction lens 4. The light beam after the second light-emitting region is imaged by the projection lens is emitted to the second reflecting mirror 312, and is deflected by the second reflecting mirror 312 and enters the second sub-light-receiving area of ​​the photosensitive drum via the correction lens 4. The light beam after the third light-emitting region is imaged by the projection lens is emitted to the third reflecting mirror 313, and is deflected by the third reflecting mirror 313 and enters the third sub-light-receiving area of ​​the photosensitive drum via the correction lens 4. The first sub-light-receiving area, the second sub-light-receiving area, and the third sub-light-receiving area are joined together seamlessly to form the light-receiving area of ​​the photosensitive drum, so that all the light-emitting units of all the light-emitting regions in the display chip 1 can be imaged on the photosensitive drum, and the utilization efficiency of the light-emitting areas in the display chip is significantly improved. The range of rotation angles of each reflecting mirror relative to the photosensitive drum 2 is not necessarily the same, and the range of inclination angles is not necessarily the same either, i.e., the first range of values ​​corresponding to different reflecting mirrors may be different, and the second range of values ​​may also be different, as long as each reflecting mirror is able to deflect the corresponding light beam to the corresponding sub-light-receiving area.In this embodiment, the three reflecting mirrors have different rotation angles and inclination angles with respect to the correction lens or the light receiving area of ​​the photosensitive drum, and the inclination angle of the reflecting mirror with respect to the light receiving area of ​​the photosensitive drum is used to adjust the position of the imaging light beam in the rotation direction of the photosensitive drum 2, and the rotation angle of the reflecting mirror with respect to the light receiving area of ​​the photosensitive drum is used to adjust the position of the imaging light beam in the axial direction of the photosensitive drum 2. For example, the second reflecting mirror 312 only inclines with respect to the photosensitive drum, and is projected obliquely above it. lens One of the beams of light emitted by the first light emitting region 311 is reflected by the correction lens, and after being deflected by the correction lens 4, it is made to enter the second sub-light receiving area of ​​the photosensitive drum 2. The first reflection mirror 311 and the third reflection mirror 313 have not only an inclination angle but also a rotation angle with respect to the light receiving area of ​​the photosensitive drum 2, and the directions of the inclination and rotation angles of the two mirrors are different, so that the emitted beams after passing through the projection lenses of the first light emitting region and the third light emitting region of the display chip are respectively incident on the first reflection mirror 311 and the third reflection mirror 313, and then, after passing through the correction lens, are respectively incident on the first sub-light receiving area and the third sub-light receiving area. By adjusting the rotation angle and inclination angle of the reflection mirror with respect to the light receiving area of ​​the photosensitive drum, it is possible to make it possible for all of the emitted beams of the three light emitting regions to enter the correction lens. In the display chip, the width of each light-emitting region along the first direction may be set to be the same, that is, each light-emitting region may be set to include the same number of pixels in the first direction, and after reflection by the reflecting mirror and correction by the correction lens, the images formed on the photosensitive drum of each light-emitting region have the same width in the rotational direction of the photosensitive drum and are joined in the axial direction of the photosensitive drum to fill one light-receiving area.

[0040] In this embodiment, the function of the beam deflection system can be realized by a beam deflection module made of a reflective mirror, which has a simple structure and is advantageous for reducing the cost of the imaging equipment, while also reducing the size of the imaging system.

[0041] Preferably, Figure 5 is a plan view of Figure 3, and in Figure 5, the virtual images formed through the three reflective mirrors of the display chip 1 are a first virtual image 111, a second virtual image 112 and a third virtual image 113, respectively. Referring to Figure 5, in this embodiment, the reflective mirrors are used to deflect the image formed by the projection lens of the corresponding light-emitting area to the corresponding sub-light-receiving area and a portion of the sub-light-receiving area adjacent to the corresponding sub-light-receiving area.

[0042] In one embodiment, the size of the light-emitting area in the length direction (the length direction is perpendicular to the first direction) and / or the focal length of the projection lens can be arranged so that the image formed after passing through the projection lens of the light-emitting area can be made larger in length than the length of the corresponding sub-light-receiving area. In addition, the rotation angle and tilt angle of the reflection mirror can be arranged so that the imaging light beam covers not only the corresponding sub-light-receiving area but also the area of ​​the adjacent sub-light-receiving area (one sub-light-receiving area or two sub-light-receiving areas) after being deflected by the reflection mirror, thereby ensuring that all parts of the light-receiving area of ​​the photosensitive drum can be covered by the imaging light beam, and the overlapping part can be understood as, for example, a joint area, and the size of the joint area can be controlled by adjusting the rotation angle of the reflection mirror. By providing the joint area, it can be ensured that the three imaging light beams projected onto the photosensitive drum are not misaligned or missing when joined.

[0043] When a joint area is provided on the photosensitive drum, the joint area can receive the imaging light beams from different light emitting areas, so that Overlayphenomenon may occur. By printing the test page, it is possible to analyze which light-emitting area is used to print the joining area with a better effect, and further to determine the pixels that are turned on when the joining area is exposed to light. For example, in the result of printing the test page of the joining area formed by the first sub-receiving area and the second sub-receiving area, if the imaging effect of the joining area of ​​the first light-emitting area is better than that of the joining area of ​​the second light-emitting area, the first light-emitting area can be used to image the joining area, and the pixels in the second light-emitting area corresponding to the joining area can be turned off during imaging. For example, the printing of the test page can be performed by printing the results when only the first light-emitting area is lit and the results when only the second light-emitting area is lit, respectively, and the printing effect of the joining area in the two printed test pages can be analyzed, and the printing effect can be determined by using, for example, the clarity of the printed pixels.

[0044] Figure 6 is a structural schematic diagram of another imaging device according to an embodiment of the present application. Referring to Figure 6, the imaging device includes at least two display chips 1 and at least two light beam deflection systems, each of which is configured to deflect an image formed by a projection lens of an emitting area on a corresponding display chip to a corresponding preset area, and each preset area includes a plurality of adjacent sub-light-receiving areas.

[0045] In this embodiment, each photosensitive drum can accommodate multiple display chips, and this embodiment can be applied when the photosensitive drum is wide relative to the imaging of the display chips (for example, the photosensitive drum may be long and the imaging area of ​​the display chip may be small). As shown in FIG. 6, for example, the photosensitive drum 2 forms an image by the light emitted by three display chips, and each display chip corresponds to one preset area of ​​the light receiving area of ​​the photosensitive drum, that is, the light receiving area of ​​the photosensitive drum is formed by joining three preset areas. Note that, in each preset area, multiple sub-light receiving areas are provided, that is, the optical path diagram corresponding to each preset area is the same as the optical path diagram shown in FIG. 5, and the optical path between each display chip and the corresponding preset area on the photosensitive drum will not be described here repeatedly. This embodiment can irradiate the photosensitive drum using multiple display chips, and further, the photosensitive drum can be set longer in the axial direction. The area simultaneously exposed to light on the photosensitive drum can be further increased, and the speed at which a complete electrostatic latent image is generated can be further increased, and the printing speed can be further increased.

[0046] Preferably, in the imaging device shown in FIG. 6, adjacent preset areas may be provided so as to partially overlap each other.

[0047] In one embodiment, the size of the display chip in the length direction (the length direction is perpendicular to the first direction) and / or the focal length of the projection lens can be arranged so that the image formed after passing through the projection lens of the display chip is longer than the length of the corresponding preset area. And by arranging the rotation angle and tilt angle of the reflection mirror, the imaging light beam covers not only the corresponding preset area but also the area of ​​the adjacent preset area (one preset area or two preset areas) after being deflected by the reflection mirror, so that it is guaranteed that all parts of the light receiving area of ​​the photosensitive drum can be covered by the imaging light beam, and the overlapping part can be understood as, for example, a joint area, and the size of the joint area can be controlled by adjusting the rotation angle of the reflection mirror. By providing the joint area, it is guaranteed that the three imaging light beams projected on the photosensitive drum are not misaligned or missing when joined.

[0048] When a joint area is provided on the photosensitive drum, the joint area can receive the imaging light beams from different light emitting areas, so that Overlay By printing a test page, we can analyze which light-emitting area has a better effect when printing the bonding area, and then determine which pixels are lit up when exposed to light for the bonding area.

[0049] In the above embodiments, one photosensitive drum is used as an example. In some other embodiments, four photosensitive drums may be used. As shown in FIG. 7, FIG. 7 is a structural schematic diagram of another imaging device according to an embodiment of the present application. In this embodiment, the imaging device includes one display chip 1 and four photosensitive drums 2, and each photosensitive drum 2 is configured to attract toner of a different color. The four photosensitive drums may be a photosensitive drum that attracts black toner, a photosensitive drum that attracts red toner, a photosensitive drum that attracts blue toner, and a photosensitive drum that attracts yellow toner. The black photosensitive drum can print a black part, the red photosensitive drum can print a red part, the blue photosensitive drum can print a blue part, and the yellow photosensitive drum can print a yellow part. The four photosensitive drums are used to print different colors, and after they are superimposed, various color patterns required are formed. In this embodiment, each photosensitive drum 2 corresponds to one light beam deflection module, and each sub-light receiving area in each photosensitive drum corresponds to one light emitting area in the display chip 1, and the light emitting areas corresponding to different sub-light receiving areas are different. For example, when three sub-light receiving areas are provided in each photosensitive drum, the four photosensitive drums have a total of 12 sub-light receiving areas, each light beam deflection module has three reflecting mirrors, and the display chip has a total of 12 light emitting areas, which correspond one-to-one to the 12 sub-light receiving areas, and the printing of a color image is controlled by controlling the corresponding light emitting areas in the display chip 1. In addition, the joint area etc. described in the embodiment corresponding to FIG. 4 are also applied to this embodiment. Of course, in some other embodiments, the light beam deflection module may not be provided, for example, the four regions of the display chip can be directly imaged onto the light receiving area by projection of the projection lens, and the window positions of the light receiving areas of the four photosensitive drums are set to be different, so that the four light beams can be directed as close as possible to the axial direction of the photosensitive drum.

[0050] FIG. 8 is a structural schematic diagram of another imaging device according to an embodiment of the present application. As shown in FIG. 8, in this embodiment, the imaging device has four photosensitive drums, which is the same as the structure shown in FIG. 6. The difference from the structure shown in FIG. 7 is that this embodiment has two display chips 1 and two light beam deflection systems that correspond one-to-one to the display chips 1, and each light beam deflection system has four light beam deflection modules. The images formed on each photosensitive drum 2 are from two display chips, and the joint area described in the embodiment corresponding to FIG. 5 can also be applied to this embodiment. Of course, each display chip corresponds to one projection lens. In some other embodiments, the light beam deflection module may not be provided, for example, the four regions of the display chip can be directly imaged on the light receiving area by the projection of the projection lens, and the window positions of the light receiving areas of the four photosensitive drums are set to be different, so that the four light beams can be directed as close to the axial direction of the photosensitive drum as possible.

[0051] Preferably, FIG. 9 is a structural schematic diagram of another imaging device according to an embodiment of the present application. Referring to FIG. 9, the imaging device includes a display chip 1 and four photosensitive drums 2, each photosensitive drum 2 is configured to attract a toner of a different color, the first photosensitive drum to the fourth photosensitive drum are sequentially arranged along a second direction x1, and the projections of the four photosensitive drums 2 overlap along the second direction x1, and the axial directions of each photosensitive drum are all perpendicular to the second direction x1, the display chip 1 includes 4*N light-emitting areas, where N is an even number greater than 2, and the light beam deflection system 3 includes: a main image distribution mirror 321 configured such that its projection does not overlap with the projection of the photosensitive drum along the second direction x1, its projection is located between the second photosensitive drum and the third photosensitive drum along a third direction perpendicular to both the axial direction of the photosensitive drum and the second direction, and that it emits a part of the emitted light of each light-emitting region of the display chip 1 in the second direction x1 and the other part in a fourth direction x2 opposite to the second direction x1; a first sub-image distributing mirror 322, the projection of which is located between the third photosensitive drum and the fourth photosensitive drum along the third direction, for partially emitting light emitted from the main image distributing mirror 321 along the second direction x1 in a fifth direction y1 and emitting the remaining portion in a sixth direction y2, which is opposite to the fifth direction y1 and parallel to the axial direction of the photosensitive drums; a second sub-image distributing mirror 323, the projection of which is located between the first photosensitive drum and the second photosensitive drum along the third direction, and which is used to partially emit light emitted from the main image distributing mirror 321 along the fourth direction x2 in a fifth direction y1 and to emit the remaining portion in a sixth direction y2; At least two area image distributing mirrors 324 are arranged in each output optical path of the sub-image distributing mirror, each of which is used to reflect light corresponding to one light-emitting region of the display chip along the fourth direction x2 and reflect light corresponding to one light-emitting region along the second direction x1, and different area image distributing mirrors 324 correspond to different light-emitting regions of the display chip; A reflecting mirror is disposed in each exit optical path corresponding to the area image distribution mirror 324 to reflect the received light to the corresponding sub-light receiving area of ​​the photosensitive drum.

[0052] This embodiment provides another aspect of achieving color printing using one display chip, and for ease of understanding, the leftward direction on the x-axis is defined as the fourth direction x2, the rightward direction as the second direction x1, the upward direction on the y-axis as the fifth direction y1, the downward direction as the sixth direction y2, and the z-axis direction as the third direction. The number of light-emitting regions on the display chip 1 is related to the number of sub-light-receiving areas on the photosensitive drum, and for example, when each photosensitive drum is divided into N sub-light-receiving areas, the display chip 1 needs to be divided into 4*N light-emitting regions.

[0053] The light emitted by the display chip 1 is emitted to the main image distribution mirror 321 after being imaged by the projection lens, and at this time, the emitted light of all the light-emitting regions can be emitted to the main image distribution mirror 321. The main image distribution mirror 321 distributes a part of the emitted light of each light-emitting region to the second direction x1, and distributes the other part to the fourth direction x2. In other words, at this time, the emitted light from the main image distribution mirror 321 in the second direction x1 includes the emitted light of all the light-emitting regions, and for each light-emitting region, the light emitted by some of the light-emitting units may be emitted in the second direction x1 and the light emitted by the remaining light-emitting units may be emitted in the fourth direction x2, or a part of the light emitted by the light-emitting units may be emitted in the second direction x1 and the remaining part may be emitted in the fourth direction x2. The light emitted by the main image distributing mirror 321 along the second direction x1 is incident on the first sub-image distributing mirror 322, which has the same structure as the main image distributing mirror, and the first sub-image distributing mirror 322 distributes a part of the incident light in the fifth direction y1 and distributes the other part in the sixth direction y2. The light emitted by the main image distributing mirror 321 along the fourth direction x2 is incident on the second sub-image distributing mirror 323, which has the same structure as the main image distributing mirror, and the second sub-image distributing mirror 323 distributes a part of the incident light in the fifth direction y1 and distributes the other part in the sixth direction y2. The number of area image distributing mirrors can be determined according to the number of sub light receiving areas to be partitioned.

[0054] The number of area image distribution mirrors can be determined according to the number of sub-light receiving areas to be partitioned. In this embodiment, two area image distribution mirrors are provided in each output optical path of the sub image distribution mirror, and the light emitting areas in the display chip 1 are arranged along the third direction, that is, in this embodiment, the first direction and the third direction are equivalent. The images of different light emitting areas are still arranged along the third direction after the image distribution of the main image distribution mirror, and are still arranged along the third direction after the image distribution of the sub image distribution mirror again, in other words, in each output optical path of the sub image distribution mirror, images corresponding to all the light emitting areas of the display chip are arranged along the third direction. An imaging lens for forming an image may be provided between each area image distribution mirror 324 and the corresponding sub image distribution mirror. By setting the position of the imaging lens, the focal length, and the position of the area image distributing mirror in the third direction, each area image distributing mirror outputs images corresponding to two of the light emitting areas in the second direction x1 and the fourth direction x2, in other words, after the image distribution of the area image distributing mirror, only light corresponding to one light emitting area exists in each output light path of the area image distributing mirror, and finally, a reflecting mirror is used to reflect the output light of the area image distributing mirror to the corresponding sub light receiving area of ​​the photosensitive drum. Note that the coordinates of each area image distributing mirror in the third direction may be the same or different. For example, the coordinates of the area image distributing mirror 324 corresponding to the sub light receiving area I1 and the sub light receiving area I2 in the third direction may be different, and the coordinates of the area image distributing mirror corresponding to the sub light receiving area I1 and the sub light receiving area I3 in the third direction may be the same. As shown in the drawing, when each photosensitive drum is provided with four sub-light-receiving areas, the display chip has a total of 16 light-emitting areas (4*4), and after being deflected by the light beam deflection system, the light corresponding to each light-emitting area can be deflected to the corresponding sub-light-receiving area.

[0055] In this embodiment, by using one display chip and a light beam deflection system, images corresponding to all the light-emitting areas on the display chip can be emitted to the corresponding sub-light-receiving areas, that is, by using one display chip, color printing can be realized, and the utilization efficiency of the light-emitting areas on the display chip is also high.

[0056] Preferably, FIG. 10 is a structural schematic diagram of the main image splitting mirror and the sub-image splitting mirror according to the embodiment of the present application, and the image splitting mirror shown in FIG. 10 may be the main image splitting mirror or the sub-image splitting mirror, that is, the structure of the main image splitting mirror and the sub-image splitting mirror may be the same. As shown in FIG. 10, the image splitting mirror has a three-dimensional structure, one side is a continuous reflection mirror, and the other side is a cut-striped reflection mirror. The image splitting mirror may be composed of two reflection mirrors, and half of the area of ​​each reflection mirror is cut-striped, and the cut-striped area is inserted vertically. That is, the two reflection mirrors are perpendicular to each other, and when placed, the two cut-striped areas of the image splitting mirror are used as the incident surface to receive the external incident light, and at this time, the light beam incident on the image splitting mirror is split into two light beams with opposite directions. As shown in Figure 11, Figure 11 is a structural schematic diagram of an area image distributing mirror according to an embodiment of the present application, and the image distributing mirror may be an area image distributing mirror, which is two consecutive reflective mirrors, so as to reflect light corresponding to different light-emitting areas along the second direction x1 and the fourth direction x2, respectively.

[0057] Preferably, Figure 12 is a structural schematic diagram of the area division of a display chip in an embodiment of the present application, which is combined with Figures 9 and 12, and the display chip has two sub-display areas divided by a center line, which are a first sub-display area 101 and a second sub-display area 102, respectively, and each sub-display area has a plurality of light-emitting areas, and in the first photosensitive drum and the second photosensitive drum, one light-emitting area is separated between two light-emitting areas corresponding to sub-light-receiving areas symmetrical with respect to the center line of the two, and in the third photosensitive drum and the fourth photosensitive drum, one light-emitting area is separated between two light-emitting areas corresponding to sub-light-receiving areas symmetrical with respect to the center line of the two, and in the corresponding plurality of sub-light-receiving areas of the same photosensitive drum, the two light-emitting areas corresponding to two adjacent sub-light-receiving areas are located in different sub-display areas.

[0058] For example, when the display chip has 16 light-emitting regions, the 16 light-emitting regions are the first light-emitting region to the 16th light-emitting region, and the first light-emitting region to the 16th light-emitting region are sequentially arranged along the first direction, the first light-emitting region to the 8th light-emitting region are located in the first sub-display area 101, the 9th light-emitting region to the 16th light-emitting region are located in the second sub-display area 102, and the sub-light-receiving areas of the four photosensitive drums are sequentially arranged along the sixth direction y2 on the first photosensitive drum as the sub-light-receiving area I6, the sub-light-receiving area I5, the sub-light-receiving area I6, the sub-light-receiving area I7, the sub-light-receiving area I8, the sub-light-receiving area I9, the sub-light-receiving area I10, the sub-light-receiving area I11, the sub-light-receiving area I12, the sub-light-receiving area I13, the sub-light-receiving area I14, the sub-light-receiving area I15, the sub-light-receiving area I16, the sub-light-receiving area I17, the sub-light-receiving area I18, the sub-light-receiving area I19, the sub-light-receiving area I20, the sub-light-receiving area I21, the sub-light-receiving area I22, the sub-light-receiving area I23, the sub-light-receiving area I24, the sub-light-receiving area I25, the sub-light-receiving area I26, the sub-light-receiving area I27, the sub-light-receiving area I28, the sub-light-receiving area I29, the sub-light-receiving area I29, , sub-light receiving area I7, and sub-light receiving area I8; in the second photosensitive drum, the sub-light receiving areas K6, K5, K7, and K8 are arranged in sequence along the sixth direction y2; in the third photosensitive drum, the sub-light receiving areas K2, K1, K3, and K4 are arranged in sequence along the sixth direction y2; and in the fourth photosensitive drum, the sub-light receiving areas I2, I1, I3, and I4 are arranged in sequence along the sixth direction y2. The sub-light receiving areas I2 and K2 are symmetrical with respect to the center line between the third photosensitive drum and the fourth photosensitive drum. In this case, when they correspond to the light-emitting areas in the display chip, one light-emitting area may be arranged between the two corresponding light-emitting areas, as shown in FIG. 2 As shown in FIG. 1, the sub-light receiving area I2 corresponds to the first light emitting area, and the sub-light receiving area K2 corresponds to the second light emitting area. 3The light-emitting area corresponds to the sub-light-receiving area, and one second light-emitting area is separated between them. The correspondence between the sub-light-receiving area and the light-emitting area described in this embodiment is represented as the light-emitting area being incident on the sub-light-receiving area after being deflected by the light beam deflection system. In addition, taking the sub-light-receiving area in the fourth photosensitive drum as an example, the sub-light-receiving area I2 and the sub-light-receiving area I1 are adjacent to each other, and when corresponding to the light-emitting area in the display chip, the light-emitting areas corresponding to the sub-light-receiving area I2 and the sub-light-receiving area I1 may be provided to be located in different sub-display areas, and as shown in FIG. 12, the sub-light-receiving area I2 corresponds to the first light-emitting area, and the first light-emitting area is located in the first sub-display area 101, and the sub-light-receiving area I1 corresponds to the eleventh light-emitting area, and the eleventh light-emitting area is located in the second sub-display area. According to the correspondence rule between the sub-light receiving area and the light emitting area in this embodiment, one light emitting area is separated from the light emitting areas corresponding to the reflected light beams of adjacent area image distributing mirrors in the same output optical path of the sub-image distributing mirror, and several light emitting areas are separated from the light emitting areas corresponding to correspondingly adjacent reflected light beams of the area image distributing mirror, thereby ensuring that the light emitted from each light emitting area does not affect each other, and ensuring that almost all of the light incident on the area image distributing mirror is used for imaging.

[0059] In the above embodiment, this can be achieved by adjusting the coordinates of each area image distribution mirror in the third direction. Of course, in some other embodiments, other rules may be adopted to correspond between the sub light receiving areas and the light emitting areas.

[0060] Preferably, for a test point that needs to be printed, the image formed on the photosensitive drum by the imaging device may have a plurality of pixel points. , Te It is possible to select appropriate pixels according to the storage page and perform correction.

[0061] In addition, the above embodiment can use one display chip to realize the imaging of four photosensitive drums of the printer, and realize color printing. Of course, the number of reflecting mirrors can be reduced according to the needs of the printer, so that gray scale printing of a single photosensitive drum can be realized, that is, only one photosensitive drum and the reflecting mirror, sub-image distribution mirror, and main image distribution mirror required for the corresponding optical path are left, and other sub-image distribution mirrors, area image distribution mirrors, and reflecting mirrors are omitted.

[0062] Preferably, the display chip is a MicroLED chip. The MicroLED chip may include a MicroLED and an ultra-fast refresh CMOS driving chip, which has the characteristics of small pixel size, high brightness, fast refresh response speed, many gray levels, etc., so that the printer has the advantages of high speed, environmental friendliness, small volume, bright color, low price, high stability, reliability, long life, etc.

[0063] An embodiment of the present application further provides a printer, the printer comprising an imaging device according to any embodiment of the present application, which also has the same beneficial effects as the imaging device according to any embodiment of the present application, and will not be repeated here.

[0064] Take a 120 PPI printer as an example. In this case, the latent image pixel size of the photosensitive drum needs to be smaller than 21 microns. A projection lens with a focal length f=10 mm is selected. When the imaging distance is 40 mm, the reflective mirror is placed between 20 mm and 30 mm from the correction lens, and the imaging magnification is about 4 times. In this case, the size of the light-emitting unit on the display chip needs to be 21 / 4 to 5 microns.

[0065] However, the larger the small-sized pixel, the more difficult it is to manufacture the display chip of the display array, and the more likely it is to have defective pixels. Based on this, this embodiment further provides an imaging method of an imaging device, as shown in FIG. 13, which is a flow chart of the imaging method of an imaging device according to an embodiment of the present application, in which, in the imaging device, a number of light-emitting units in the display chip are arranged in a matrix, and the light-emitting area is imaged as a number of pixel points distributed in a matrix along the row and column directions in the sub-light-receiving area, and none of the angles formed between the row direction and the column direction and the axial direction of the photosensitive drum is 90 degrees.

[0066] Imaging methods include:

[0067] In step S301, a preset latent image line of the photosensitive drum is rotated to a position corresponding to an imaging pixel row in the light-receiving area, in which the preset latent image line is parallel to the axial direction of the photosensitive drum, the imaging pixel row is parallel to the axial direction of the photosensitive drum, the imaging pixel row has a plurality of imaging pixels, and the imaging pixel is a pixel point or a superposition of at least two pixel points around it.

[0068] 14 is a schematic diagram of the relationship between the photosensitive drum and the imaging pixels when the imaging device according to the embodiment of the present application forms an image. As shown in FIG. 14, in the display chip of this embodiment, the size of the light-emitting unit is small, but the interval between the pixels is large, for example, the size of the light-emitting unit is 5 microns, and the interval between the light-emitting units is 25 microns, and such a display chip has a high yield rate during production. In this embodiment, by setting the relationship between the display chip and the photosensitive drum, a plurality of pixel points 601 formed by the light-emitting units in the display chip in the light-receiving area of ​​the photosensitive drum are displayed as in FIG. 4 Even though a plurality of pixel points 601 are arranged in a matrix in row and column directions, the angles between the row and column directions and the axial direction of the photosensitive drum are not all 90 degrees, the row direction of the pixel points is not parallel to the axial direction of the photosensitive drum, and the column direction of the pixel points is not parallel to the axial direction of the photosensitive drum. 4The rectangular frame in can be understood as one sub-light receiving area, and the center line in the middle of the rectangular frame is the central axis line of the sub-light receiving area. The preset latent image line 602 is a line waiting to be imaged on the photosensitive drum. If the preset latent image line 602 is not rotated to the sub-light receiving area, it cannot be exposed to the pixel point 601. If the preset latent image line is rotated to the sub-light receiving area, for example, in the rotation direction of the photosensitive drum, the preset latent image line 60 2 When the pixel point corresponding to the first position of the sub-light-receiving area is located at the first position, execute step S302 to turn on the display chip and use the imaging pixel row to expose a portion of the preset latent image line, that is, the pixel point corresponding to the first position is located at the preset latent image line 60; 2 is partially exposed to light.

[0069] Then, step S303 is carried out, the photosensitive drum is rotated to move the preset latent image line, and when the preset latent image line is moved to the next imaging pixel row, the display chip is turned on.

[0070] In one embodiment, after the preset latent image line 602 completely passes through the sub-light-receiving area, all parts of the preset latent image line 602 are exposed, and a complete electrostatic latent image corresponding to the preset latent image line 602 is formed. Since the row and column directions of the pixel points 601 are not parallel to the axial direction of the photosensitive drum, when the preset latent image line moves, the preset latent image line may face one row of pixel points 601, at which time the pixel points of the row can be understood as an imaging pixel line, and the pixel points of the imaging pixel line of the row are used to expose the preset latent image line, but there may be no pixel points facing the preset latent image line, at which time the brightness of the surrounding pixel points 601 are used to overlap to form a virtual pixel point, and the virtual pixel points are connected to form one imaging pixel line, and the preset latent image line can be exposed using the virtual pixel point.

[0071] As can be seen from the above analysis, the spacing between the light-emitting areas on the display chip is large, the angles between the row and column directions of the pixel points and the axial direction of the photosensitive drum are not all 90 degrees, and the preset latent image line is exposed multiple times instead of once when passing through the sub-light-receiving area, so that the imaging points of the preset latent image line are very dense in the axial direction of the photosensitive drum, and therefore the imaging resolution of the preset latent image line is greatly improved. That is, this embodiment can realize the imaging capability of a high-resolution latent image with a small pixel interval by using a display chip with a large pixel interval.

[0072] As shown in FIG. 14, pixel points located in the sub-photosensitive areas along the axial direction of the photosensitive drum can be understood as junction fusion pixel points, which can be used to expose the junction areas in FIG. 5 or FIG. 6.

[0073] Preferably, the imaging method further includes simultaneously imaging a plurality of preset latent image lines located on the sub-light receiving areas.

[0074] In one embodiment, as shown in FIG. 14, the sub-photosensitive area includes multiple rows of pixel points (in the axial direction of the photosensitive drum), and the pixel points of each row can all expose the photosensitive drum, so that multiple preset latent image lines can be set simultaneously, and different preset latent image lines are located at different positions on the photosensitive drum when imaged; that is, the photosensitive drum of the printer can simultaneously expose multiple rows and multiple points, and the exposure speed is much faster than the point scanning of a normal laser printer, so the printing speed can be greatly increased.

[0075] Preferably, the imaging method includes utilizing an imaging device to print a test page having a plurality of preset scanned test points; Scanning test points and Bite analyzing the test page for duplicated and missing lines according to the actual printed dots on the test page; determining scanning points responsive to the missing and duplicated lines.

[0076] In the above imaging method, the pixels of one row in the preset latent image line are not exposed at the same time, and the preset latent image line is completely imaged only after it has completely passed through the sub-light-receiving area. During the imaging process, due to the joining of the joining area, when the photosensitive drum rotates to a different position, the imaging area where the preset latent image line is located may restart or the pixel arrangement direction may not match, and so on, so that this embodiment can make corrections. A test page is printed, and the overlapping and missing lines are scanned and analyzed to select the corresponding scanning points, that is, the light-emitting units are selected, so that it is possible to ensure that the overlapping and missing lines do not appear, and to determine the positional deviation distance of the scanning points in the paper running direction. The scanning points are determined according to the missing and overlapping lines, if there is a pixel point directly opposite the scanning test point, the pixel point is the scanning point, and if there is no pixel point directly opposite the scanning test point, the scanning test point is selected as the scanning point. The grayscale of adjacent pixels is Overlay Be The method includes performing grayscale conversion on pixel points adjacent to the scanning test point so that the maximum luminance point after the scanning test point is located at the scanning test point.

[0077] FIG. 15 is a diagram showing an embodiment of the present invention. Rute FIG. 15 is a schematic diagram of a store page. In this embodiment, , Te The text page includes preset scanning test points P, and when the scanning test points P are printed, the printed results are printing points A, B, C, D, etc., and if there is a deviation between the two, Grayscale Overlay Be The pixel points around the scanning test point are converted according to the distance gray scale so that the position of the highest brightness point after scanning is located at the scanning test point P, and the difference is made with the printing file to realize accurate printing.

[0078] As can be seen from the above analysis, the latent image pixels on the photosensitive drum and the pixels on the display chip do not have a one-to-one relationship, but rather a one-to-many relationship, and even if there are defective pixels on the display chip, this does not affect the imaging quality of the latent image.

[0079] When the display system is constant, the positional relationship and relative brightness between the display pixels are determined, and the display control algorithm calculates the time sequence of lighting the display chips according to the relative positional relationship, relative brightness, and axial rotation speed of the photosensitive drum between each pixel, so as to realize an accurate latent image on the photosensitive drum.

[0080] It should be understood that the various types of flows illustrated above may be used, and steps may be rearranged, added, or removed, for example, the steps described herein may be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical aspects of the present application are achieved.

[0081] The imaging device adopted in the embodiment of the present application is provided with a light beam deflection system, which enables all images corresponding to all light-emitting areas of the display chip to be imaged onto the photosensitive drum, thereby realizing high-resolution printing with a low-resolution pixel array, greatly increasing the utilization rate of the light-emitting areas of the display chip, and increasing the width of the latent image on the photosensitive drum.

Claims

1. one or more M number of rotatable photosensitive drums, each of which is configured to expose a light receiving area having a plurality of sub-light receiving areas arranged along an axial direction to form an electronic latent image in the light receiving area; At least one display chip, each of which has at least two light-emitting regions arranged along a first direction, each of which corresponds to the sub-light-receiving area one-to-one, and each of which is provided with a plurality of light-emitting units; at least one projection lens in one-to-one correspondence with the at least one display chip, each projection lens being configured to image onto a corresponding one of the display chips; and at least one light beam deflection system in one-to-one correspondence with the at least one display chip, configured to deflect an image of light emitted from each of the light-emitting regions of the display chip, which is formed by the corresponding projection lens, onto the corresponding sub-light-receiving area. Imaging equipment.

2. The light beam deflection system includes M light beam deflection modules that correspond one-to-one to the M photosensitive drums, and each of the light beam deflection modules includes at least two reflecting mirrors that respectively correspond to one of the light emitting regions; The reflecting mirror is configured to deflect an image formed by the corresponding projection lens of the light emitted from the corresponding light-emitting region onto the corresponding sub-light-receiving area.

2. The imaging apparatus of claim 1.

3. The reflection mirror is configured to deflect an image formed by the corresponding projection lens of the light emitted from the corresponding light-emitting region onto the corresponding sub-light-receiving area and a part of another sub-light-receiving area adjacent to the corresponding sub-light-receiving area.

3. The imaging apparatus of claim 2.

4. At least two of the display chips; At least two of the light beam deflection systems are configured to deflect an image of light emitted from a light emitting region of the corresponding display chip, the image being focused by the corresponding projection lens, to a corresponding preset region; The preset region includes a plurality of adjacent sub-light receiving areas.

3. The imaging apparatus of claim 2.

5. The adjacent preset regions partially overlap each other.

5. An imaging apparatus according to claim 4.

6. A photosensitive drum is provided, or four photosensitive drums each configured to attract a different color toner, 3. The imaging apparatus of claim 2.

7. a display chip and four photosensitive drums each configured to attract a toner of a different color, the first photosensitive drum to the fourth photosensitive drum are sequentially arranged along a second direction, projections of the four photosensitive drums overlap along the second direction, and axial directions of the photosensitive drums are all perpendicular to the second direction; The display chip includes 4*N light-emitting regions, where N is an even number greater than 2; The beam deflection system comprises: a main image distribution mirror configured such that a projection does not overlap with a projection of the photosensitive drum along a second direction, a projection is located between a second photosensitive drum and a third photosensitive drum along a third direction perpendicular to both an axial direction of the photosensitive drum and the second direction, and a part of the emitted light of each of the light-emitting regions of the display chip is emitted in the second direction and the remaining part is emitted in a fourth direction opposite to the second direction; a first secondary image distributing mirror, the projection of which is located between a third photosensitive drum and a fourth photosensitive drum along the third direction, configured to partially emit light emitted from the primary image distributing mirror along the second direction in a fifth direction and to emit the remaining portion in a sixth direction opposite to the fifth direction and parallel to the axial direction of the photosensitive drums; a second sub-image distributing mirror, the projection of which is located between a first photosensitive drum and a second photosensitive drum along the third direction, configured to partially emit light emitted from the main image distributing mirror along the fourth direction in the fifth direction and to emit the remaining portion in the sixth direction; At least two area image distributing mirrors are arranged in the optical paths of the emitted light of the first sub-image distributing mirror and the second sub-image distributing mirror, each of which is configured to partially reflect light corresponding to one of the light-emitting regions of the display chip along the fourth direction and to reflect the remaining portion along the second direction, and different area image distributing mirrors correspond to different light-emitting regions of the display chip, A reflecting mirror configured to reflect the received light to the corresponding sub-light receiving area is disposed in each of the output light paths corresponding to the area image distribution mirror.

2. The imaging apparatus of claim 1.

8. The display chip includes two sub-display areas, each of which includes a plurality of the light-emitting regions, the two sub-display areas being divided by a center line; In the first photosensitive drum and the second photosensitive drum, one light emitting region is separated between two light emitting regions corresponding to the sub-light receiving areas symmetrical with respect to a center line between the first photosensitive drum and the second photosensitive drum, In the third photosensitive drum and the fourth photosensitive drum, one light emitting region is separated between two of the light emitting regions corresponding to the sub light receiving areas symmetrical with respect to a center line between the third photosensitive drum and the fourth photosensitive drum, In the plurality of corresponding sub-light receiving areas of the same photosensitive drum, two of the light emitting regions corresponding to two adjacent sub-light receiving areas are located in different sub-display areas.

8. An imaging apparatus according to claim 7.

9. The display chip is a MicroLED chip; 2. The imaging apparatus of claim 1.

10. A toner cartridge and an imaging device according to any one of claims 1 to 9. Printer.

11. 10. The imaging device according to claim 1, wherein all of the light-emitting units of the display chips are arranged in a matrix, all of the light-emitting regions are imaged as a plurality of pixel points arranged in a matrix along row and column directions in the sub-light-receiving area, and none of the angles formed by the row and column directions and axial directions of all of the photosensitive drums are 90 degrees, Rotating all of the preset latent image lines of the photosensitive drum, which are parallel to the axial direction of the photosensitive drum, to a position corresponding to one imaging pixel row in all of the light receiving areas, the imaging pixel row including a plurality of imaging pixels, each of which is the pixel point or a superposition of at least two pixel points around the pixel point, which are parallel to the axial direction of the photosensitive drum; turning on all the display chips to expose a portion of the preset latent image line using the imaging pixel rows; rotating the photosensitive drum to move the preset latent image line, and turning on all of the display chips when the preset latent image line is moved to a next imaging pixel row; Imaging method.

12. Further comprising simultaneously forming an image on a plurality of preset latent image lines located in the sub-light receiving area, The imaging method of claim 11.

13. utilizing said imaging device to print a test page having a plurality of preset scanning test points; analyzing the test page for missing and duplicated lines according to the scanned test points and the printed points actually printed on the test page; determining scanning points according to the missing and duplicated lines. The imaging method of claim 11.

14. The step of determining the scanning points according to the missing lines and the duplicated lines includes the steps of: Based on a determination result that a pixel point directly facing the scanning test point exists, the pixel point is set as the scanning point; and performing grayscale conversion on pixel points adjacent to the scanning test point so that a maximum luminance point after the grayscales of the adjacent pixel points are superimposed is located at the scanning test point based on a determination result that there is no pixel point directly opposite the scanning test point.

14. The imaging method of claim 13.

Images