Abstract: A coloring nozzle cleaning assembly is used to clean a coloring nozzle of a 3D printing device. The coloring nozzle cleaning assembly includes a cleaning tank, a movable scraper and a liquid-absorbent interference member. The cleaning tank includes an opening and receives a cleaning liquid inside. The movable scraper has a contact end placed inside the cleaning tank and immersed in the cleaning liquid, and the contact end can be moved out of the cleaning tank through the opening to scrape against the coloring nozzle. The liquid-absorbent interference member is disposed within an area of the opening, and is located over a liquid level of the cleaning liquid and interferes with a movement course of the movable scraper. Excess cleaning liquid adhered to the movable scraper is absorbed by the liquid-absorbent interference member before the movable scraper cleans the coloring nozzle.

Abstract: A method for processing printing information of a powder-bed type 3D printer is disclosed. The method comprises following steps of: generating a color image and an adhesive image for each printing slice in accordance with a 3D file; adjusting adhesive information of the adhesive image based on color information of the color image; and, generating a final printing image based on the color image and the adjusted adhesive image. The method prevents the 3D printing from jetting adhesive that may overlap with jetted colored ink by using the final printing image, so as to avoid the jetted color-ink being diluted by the adhesive, and powders being moist because of the overlap of the colored ink and the adhesive.

Abstract: A coloring nozzle cleaning assembly is used to clean a coloring nozzle of a 3D printing device. The coloring nozzle cleaning assembly includes a cleaning tank, a movable scraper and a liquid-absorbent interference member. The cleaning tank includes an opening and receives a cleaning liquid inside. The movable scraper has a contact end placed inside the cleaning tank and immersed in the cleaning liquid, and the contact end can be moved out of the cleaning tank through the opening to scrape against the coloring nozzle. The liquid-absorbent interference member is disposed within an area of the opening, and is located over a liquid level of the cleaning liquid and interferes with a movement course of the movable scraper. Excess cleaning liquid adhered to the movable scraper is absorbed by the liquid-absorbent interference member before the movable scraper cleans the coloring nozzle.

Abstract: A distributed printing method of a powder-bed type 3D printer is present. The method first generates, for each printing layer of a 3D model file, a color image which is applied to print an outer contour part and a non-color image which is applied to print an internal structure part. The method then calculates replacing information according to a default adjusting module, and adjusts color information of the color image and adhesive information of the non-color image based on the replacing information. Finally, the method combines the adjusted color image and non-color image for generating a final printing image, and executes printing according to the final printing image.

Abstract: An automatic inkjet head cleaning method for a powder bed and inkjet 3D printer is provided, and the method includes steps: controlling a powder-laying module and a plurality of the inkjet heads of the powder bed and inkjet 3D printer to print a 3D physical model according to 3D printing data; retrieving a status value continuously or intermittently during printing; executing the first cleaning procedure for cleaning all or parts of the inkjet heads when determining the status value satisfies the first cleaning configuration value; and executing the second cleaning procedure for cleaning all or parts of the inkjet heads when determining the status value satisfies the second cleaning configuration value. The method automatically cleans the inkjet heads during the printing process, which effectively improves printing quality and reduces printing failure rates.

Abstract: An automatic inkjet head cleaning method for a powder bed and inkjet 3D printer is provided, and the method includes steps: controlling a powder-laying module and a plurality of the inkjet heads of the powder bed and inkjet 3D printer to print a 3D physical model according to 3D printing data; retrieving a status value continuously or intermittently during printing; executing the first cleaning procedure for cleaning all or parts of the inkjet heads when determining the status value satisfies the first cleaning configuration value; and executing the second cleaning procedure for cleaning all or parts of the inkjet heads when determining the status value satisfies the second cleaning configuration value. The method automatically cleans the inkjet heads during the printing process, which effectively improves printing quality and reduces printing failure rates.

Abstract: A method for adjusting a printing head usage amount of a 3D printer and a control device are provided. The method is adapted to control the control device of the 3D printer. The method includes following steps. At least one printing head of the 3D printer is divided into a plurality of sections. An accumulated printing point number of each of the sections is obtained. At least one specific section used for printing a 3D object is selected from the sections according to the accumulated printing point number of each of the sections. The method for adjusting the printing head usage amount of the 3D printer and the control device can avoid excessively high usage amount of some nozzles.

Abstract: A distributed printing method of a powder-bed type 3D printer is present. The method first generates, for each printing layer of a 3D model file, a color image which is applied to print an outer contour part and a non-color image which is applied to print an internal structure part. The method then calculates replacing information according to a default adjusting module, and adjusts color information of the color image and adhesive information of the non-color image based on the replacing information. Finally, the method combines the adjusted color image and non-color image for generating a final printing image, and executes printing according to the final printing image.

Abstract: A method for processing printing information of a powder-bed type 3D printer is disclosed. The method comprises following steps of: generating a color image and an adhesive image for each printing slice in accordance with a 3D file; adjusting adhesive information of the adhesive image based on color information of the color image; and, generating a final printing image based on the color image and the adjusted adhesive image. The method prevents the 3D printing from jetting adhesive that may overlap with jetted colored ink by using the final printing image, so as to avoid the jetted color-ink being diluted by the adhesive, and powders being moist because of the overlap of the colored ink and the adhesive.

Abstract: A method for adjusting a printing head usage amount of a 3D printer and a control device are provided. The method is adapted to control the control device of the 3D printer. The method includes following steps. At least one printing head of the 3D printer is divided into a plurality of sections. An accumulated printing point number of each of the sections is obtained. At least one specific section used for printing a 3D object is selected from the sections according to the accumulated printing point number of each of the sections. The method for adjusting the printing head usage amount of the 3D printer and the control device can avoid excessively high usage amount of some nozzles.

Abstract: A printing compensation method for an inkjet printing system is provided. The inkjet printing system includes a printing module, an image capture module and a dynamic compensation module. The printing module includes plural nozzles. First, a nozzle test pattern corresponding to the plural nozzles is printed out by the printing module. Then, a digital data corresponding to the nozzle test pattern is acquired by the image capture module, and a judging step is performed to judge whether any of the plural nozzles is abnormal according to the digital data. If at least one of the plural nozzles is abnormal, an information about at least one failed-print part corresponding to the at least one nozzle is acquired. Then, the dynamic compensation module is enabled to perform a compensation printing operation according to the information about the at least one failed-print part.

Abstract: An automatic printing adjustment method for a page-width array printing device is provided. The page-width array printing device includes a printing module, a scanning module and a print region. Firstly, the printing module prints a print medium placed on the print region to obtain a printed image, and the scanning module scans the printed image of the print medium. Then, the printed image is transmitted from the scanning module to a processor. Then, a noise eliminating operation, a tilt calibration operation, a ROI selecting operation, a horizontal detection operation and a vertical detection operation are performed on the printed image. Afterwards, a calibrating result is feedback from the processor to the printing module. The printing conditions of nozzles of the respective inkjet head structures are adjusted according to the calibrating result.

Abstract: A slicing method for a rapid prototyping apparatus with a printing module is provided, which comprises the following steps: (a) accessing data of plural cut points generated from a slicing plane of an object intersecting with plural grids; (b) determining whether a printing module performs an achromatic color printing or not; (c) if yes, connecting two cut points to form a first slicing outline based on the data of the plural cut points, wherein the cut points are generated from the slicing plane intersecting with each grid; (d) checking whether a discontinuous plane exists in the first slicing outline or not, wherein if yes, cut points are paired with a polar coordinate, a connecting path with a smaller included angle is selected, and the first slicing outline connects with the connecting path to form a closed slicing outline to perform an achromatic inkjet printing in the closed slicing outline.

Abstract: A method for setting function options and a multi function peripheral (MFP) using the same are provided. The MFP at least includes an image sensor and an option switch, wherein the option switch includes a sliding groove and a shift lever, and the shift lever is disposed in sliding way in the sliding groove. The method includes using the image sensor to obtain an option image of the option switch; judging a corresponding position relating to the shift lever in the option image; and setting a peripheral function according to a function option corresponding to the corresponding position.

Abstract: A method for setting function options and a multi function peripheral (MFP) using the same are provided. The MFP at least includes an image sensor and an option switch, wherein the option switch includes a sliding groove and a shift lever, and the shift lever is disposed in sliding way in the sliding groove. The method includes using the image sensor to obtain an option image of the option switch; judging a corresponding position relating to the shift lever in the option image; and setting a peripheral function according to a function option corresponding to the corresponding position.

Abstract: A slicing method for a rapid prototyping apparatus with a printing module is provided, which comprises the following steps: (a) accessing data of plural cut points generated from a slicing plane of an object intersecting with plural grids; (b) determining whether a printing module performs an achromatic color printing or not; (c) if yes, connecting two cut points to form a first slicing outline based on the data of the plural cut points, wherein the cut points are generated from the slicing plane intersecting with each grid; (d) checking whether a discontinuous plane exists in the first slicing outline or not, wherein if yes, cut points are paired with a polar coordinate, a connecting path with a smaller included angle is selected, and the first slicing outline connects with the connecting path to form a closed slicing outline to perform an achromatic inkjet printing in the closed slicing outline.