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CN-122008710-A - Printing method and image forming apparatus

CN122008710ACN 122008710 ACN122008710 ACN 122008710ACN-122008710-A

Abstract

The present application provides a printing method and an image forming apparatus, by determining a nozzle usage rate and a dot coverage rate of each nozzle in each ink ejection area to reflect the busyness of the nozzle and the density of the dot on a sheet when printing the ink ejection area, thereby reflecting the content coverage rate of the ink ejection area from the side. Further, the moving speed of the printing head when printing the ink jet area is determined according to the usage rate of the jet holes and the coverage rate of the ink points. And when the coverage rate of the content is high, the printing speed is low, so that the wetting of paper is avoided, and when the coverage rate of the content is low, the printing speed is high, so that the printing efficiency is ensured.

Inventors

  • CHEN YINGYANG

Assignees

  • 珠海奔图电子有限公司

Dates

Publication Date
20260512
Application Date
20260206

Claims (10)

  1. 1. A printing method, characterized by being applied to an image forming apparatus, comprising: determining a nozzle usage rate of nozzles in each of a plurality of ink ejection areas, the nozzle usage rate being determined based at least on the number of times the nozzle is ejected in the ink ejection area; determining a dot coverage rate of each of a plurality of ink ejection areas, the dot coverage rate being determined based at least on a sum of ink ejection times of a plurality of the ejection orifices in the ink ejection areas, and And determining the printing speed of each ink-jet area based on the jet hole utilization rate and the ink point coverage rate so as to print the ink-jet area.
  2. 2. The printing method according to claim 1, wherein the usage rate of the nozzle holes is determined based on a ratio of the number of ink ejection of the nozzle holes in an ink ejection area to a pixel corresponding to a width of the ink ejection area, and the dot coverage rate is determined based on a ratio of a sum of the number of ink ejection of the plurality of nozzle holes in the ink ejection area to a maximum number of ink ejection allowed by the ink ejection area.
  3. 3. The printing method according to claim 2, wherein the width of the ink ejection area is the width of the printing paper in a direction coincident with the paper feed direction of the image forming apparatus, and the height of the ink ejection area is determined based on the maximum printing height of the printhead in a direction perpendicular to the paper feed direction.
  4. 4. A printing method according to claim 3, wherein the method further comprises: Receiving an image; Dividing the image into a plurality of ink-jet areas, and And determining the ink ejection times of each spray hole and the maximum allowable ink ejection times of the ink ejection area in each ink ejection area, wherein the maximum ink ejection times are determined at least based on the pixel points corresponding to the width of the ink ejection area and the pixel points corresponding to the height of the ink ejection area.
  5. 5. The printing method according to claim 1, wherein the determining the printing speed of each of the ink ejection areas based on the nozzle hole usage rate and the dot coverage rate includes: determining a maximum value of the usage rate of each of the plurality of nozzle holes and the coverage rate of the ink dots corresponding to each ink ejection area, and Based on the maximum value, a print head movement speed is determined to print the ink ejection area.
  6. 6. A printing method according to claim 3, wherein the method further comprises: determining a print type of the inkjet area, the print type comprising a text type or an image type; When the ink-jet area is the text type, printing the ink-jet area in one pass, or And when the ink-jet area is of the image type, carrying out multi-pass printing on the ink-jet area.
  7. 7. The printing method of claim 6 wherein said determining the print type of the ink ejection area comprises: determining a text area and/or an image area of the ink jet area; Determining a first area ratio based on the area of the text region and the area of the ink-jet region, and/or determining a second area ratio based on the area of the image region and the area of the ink-jet region, and A print type of the inkjet area is determined based on the first area ratio and/or the second area ratio.
  8. 8. A printing method according to claim 3, wherein the method further comprises: determining a print type of each of a plurality of image areas included in the ink-jet area, the print type including a text type or an image type; When the image area is of the text type, the image area is printed in one pass, or And when the image area is of the image type, performing multi-pass printing on the image area.
  9. 9. The printing method according to claim 6 or 8, wherein a print height of the print head is determined based on the number of passes of the multipass printing and the height of the ink ejection area at the time of each of the multipass printing.
  10. 10. An image forming apparatus applied to a printing method, the apparatus comprising: a jet orifice located on the apparatus body for printing the ink jet area, and An apparatus body for implementing the printing method according to any one of claims 1 to 9.

Description

Printing method and image forming apparatus Technical Field The present application relates to the field of printing technology, and in particular, to a printing method and an image forming apparatus. Background Inkjet printing technology has been widely used in the office, commercial printing, and home applications as a mainstream digital output format. The principle of operation is to form images or text by ejecting tiny ink droplets onto paper or other media. When printing content, the unified printing strategy is adopted, the situation that the ink accumulation amount on paper is overlarge and the paper is excessively wet and wrinkled sometimes occurs, and the situation that the printing speed is excessively slow and the printing efficiency is affected sometimes occurs. Disclosure of Invention The application provides a printing method and an image forming apparatus, which can solve the problems that the ink accumulation amount of certain areas on paper is overlarge and the printing speed of certain areas is too slow by adjusting the printing speed of a printing head to enable the printing speed to be matched with printing content (density). In one aspect, the present embodiment provides a printing method applied to an image forming apparatus, the method including determining a usage rate of orifices in each of a plurality of ink ejection areas, the usage rate of the orifices being determined based at least on a number of times the orifices are ejected in the ink ejection areas, determining a dot coverage rate of each of the plurality of ink ejection areas, the dot coverage rate being determined based at least on a sum of the number of times the plurality of orifices are ejected in the ink ejection areas, and determining a printing speed of each of the ink ejection areas based on the usage rate of the orifices and the dot coverage rate, to print the ink ejection areas. In an embodiment of the present disclosure, the usage rate of the nozzle holes is determined based on a ratio of the number of ink ejection times of the nozzle holes in the ink ejection area to the pixel points corresponding to the width of the ink ejection area, and the coverage rate of the ink points is determined based on a ratio of a sum of the number of ink ejection times of the plurality of nozzle holes in the ink ejection area to a maximum number of ink ejection times allowed by the ink ejection area. In an embodiment of the present disclosure, the width of the ink ejection area is the width of the printing paper in a direction coincident with the paper feeding direction of the image forming apparatus, and the height of the ink ejection area is determined based on the maximum printing height of the printhead in a direction perpendicular to the paper feeding direction. In an embodiment of the disclosure, the method further includes receiving an image, dividing the image into a plurality of ink ejection areas, and determining an ink ejection count for each nozzle and a maximum ink ejection count allowed by the ink ejection areas within each ink ejection area, the maximum ink ejection count being determined based at least on a pixel point corresponding to a width of the ink ejection area and a pixel point corresponding to a height of the ink ejection area. In an embodiment of the present disclosure, determining a printing speed of an ink ejection area based on an ejection orifice usage rate and a dot coverage rate includes determining a maximum value of the usage rate and the dot coverage rate of each of a plurality of ejection orifices corresponding to each of the ink ejection areas, and determining a printhead moving speed based on the maximum value to print the ink ejection areas. In an embodiment of the disclosure, the method further comprises determining a print type of the ink-jet area, wherein the print type comprises a text type or an image type, performing one-pass printing on the ink-jet area when the ink-jet area is the text type, or performing multi-pass printing on the ink-jet area when the ink-jet area is the image type. In an embodiment of the present disclosure, determining a print type of an inkjet area includes determining a text area and/or an image area of the inkjet area, determining a first area ratio based on the text area and the area of the inkjet area, and/or determining a second area ratio based on the image area and the area of the inkjet area, and determining the print type of the inkjet area based on the first area ratio and/or the second area ratio. In an embodiment of the present disclosure, the method further includes determining a print type of each of a plurality of image areas included in the inkjet area, the print type including a text type or an image type, printing the image area in one pass when the image area is the text type, or printing the image area in multiple passes when the image area is the image type. In an embodiment of the present disclosure, the print height of the printhead is dete