Abstract: A printing correction method and a 3D printing device are provided, and the printing correction method is adapted to the 3D printing device having a printing platform. The printing correction method is as follows. An electric field is provided to the printing platform. A detection probe is extended towards a position of the printing platform along a first axial direction to enter the electric field, where the position is defined as an initial position. The detection probe is moved from the initial position along a moving path on the printing platform, and when the detection probe is moved along the moving path, an electric field variation is detected to determine a tilt variation of the printing platform relative to the first axial direction. It is determined whether to correct the printing platform according to the tilt variation of the printing platform.

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 three dimension (3D) printing coloring method and a 3D printing system are provided. The method includes: generating printing object information according to model information of a 3D object, where the printing object information includes first contour coloring information and second contour coloring information; determining whether a similarity degree of the first contour coloring information and the second contour coloring information conforms to a default condition; if the similarity degree conforms to the default condition, controlling, according to the first contour coloring information and the second contour coloring information, a 3D printing device to perform a simultaneous coloring operation on a first printing layer and a second printing layer of a 3D object. Therefore, a working efficiency of the 3D printing device can be improved.

Abstract: A 3-D printing apparatus of the invention includes a process unit, a 3-D display unit, a base and a printing head. The processing unit is configured to read and process a digital 3-D model information. The base has a carrying surface. The 3-D display unit is coupled to and controlled by the processing unit and configured to display a digital 3-D image related to the digital 3-D model on the carrying surface for previewing, wherein the 3-D image is corresponding to a 3-D object related to the digital 3-D model. The printing head is disposed above the base and coupled to the processing unit, wherein the processing unit controls the printing head to dispense a base material formed on the carrying surface layer by layer so as to form the 3-D object according to the digital 3-D model information and following an image contour of the 3-D image.

Abstract: A paper feeding module includes a main body (100). A working plane (101) is formed on an external surface of the main body (100), a slot channel (110) is defined in the main body (100), a paper inlet (111) and a paper outlet (112) are formed at respective two ends of the slot channel (110), an output roller assembly (122) is arranged at the paper outlet (112), an opening (102) communicating with one side of the slot channel (110) is defined on the working plane (101), a scanning assembly (200) is arranged in the slot channel (110) between the opening (102) and the output roller assembly (122) and is arranged opposite to the opening (102), and the scanning assembly (200) is exposed on an internal surface of the slot channel (110).

Abstract: A three-dimensional (3-D) printing apparatus and a three dimensional printing method are provided. The three dimensional printing method includes following steps. A closed printing path of a closed-contour structure is obtained, wherein the closed printing path includes a printing start point and a printing end point. A printing head is controlled to move from the printing start point and along a front segment of the closed printing path according to a first moving speed, and the printing head is controlled to simultaneously extrude a building material. After the printing head moves along the front segment of the closed printing path, the printing head is controlled to move to the printing end point along a rear segment of the closed printing path according to a second moving speed, and the printing head is controlled to simultaneously extrude the building material. The second moving speed is less than the first moving speed.

Abstract: A three dimensional printing apparatus and a controlling method thereof are provided. A first forming material and a second forming material are adapted for being fed into a melting nozzle. A controller determines a first pulling-back amount according to a first feeding-in ratio of the first forming material and determines a second pulling-back amount according to a second feeding-in ratio of the second forming material. During a period in which a printing module stops extruding any material, the controller controls a feeding module to pull back the first forming material along a direction which is departing from a melting nozzle and controls the feeding module to pull back the second forming material along the direction which is departing from the melting nozzle.

Abstract: A three-dimension (3-D) printing method and a 3-D printing system are provided. The method includes: generating printing information according to model information of a 3-D object; controlling a 3-D printing apparatus to perform a 3-D printing operation, so as to print a supporting object and the 3-D object, wherein the supporting object is used to support the 3-D object. Furthermore, the step of generating the printing information includes: detecting a floating contour of the 3-D object on the first printing layer according to the model information; and removing printing information of the supporting object from printing information corresponding to a second printing layer according to the floating contour. Thereby, difficulty of removing the supporting object can be reduced.

Abstract: A three-dimensional (3-D) printing apparatus and an inkjet coloring method thereof are provided. The 3-D printing apparatus includes a platform, a three-dimensional printing head, an inkjet head and the method includes following steps. A layer thickness of at least one layer object forming a 3-D object is obtained. An ink discharge volume of an ink layer is adjusted according to the layer thickness, wherein the ink discharge volume is in positive correlation with the layer thickness. A building material is melted and printed out on the platform according to the layer thickness by the three-dimensional printing head to form the at last one layer object. Ink is dispensed on the at last one layer object according to the adjusted ink discharge volume by the inkjet head to form the ink layer.

Abstract: A sound source apparatus for receiving an audio signal and displaying the audio signal is provided. The sound source apparatus includes at least two sound source output devices, at least two distance sensors, and a processor. Each distance sensor is installed respectively corresponding to each sound source output device, and is configured to respectively detect at least one target to generate sensing signals. The processor receives the audio signal, and when the processor determines that the at least one target meets a sensing range through respectively receiving the sensing signals generated by each distance sensor, the processor calculates output volume of each sound source output device respectively according to a relative distance between each distance sensor and the at least one target.

Abstract: A 3D printing device and a printing correction method are provided. The 3D printing device includes a printing nozzle, a printing platform and a controller. The printing nozzle is controlled to move on the movement plane. The printing platform includes a first tilt sensor to sense a tilting state of the printing platform. The controller is coupled to the first tilt sensor. The printing correction method adapted to the 3D printing device includes following steps: sensing the tilting state of the printing platform; controlling the printing nozzle to be depressed in a first position on the printing platform to change the tilting state of the printing platform; and, correcting the relative position of the print platform with the movement plane by the first position and the changes of tilting state of the printing platform sensed by the tilt sensor.

Abstract: The invention provides a method for height difference measurement between the print heads and a 3D printer using the method. The 3D printer includes a printing module, a contact sensor, a movement sensor and a controller. The controller makes a 3D print head and the contact sensor contact to each other vertically for generating a contact signal, and obtains a first height value according to a vertical movement distance between the printing module and the contact sensor. The controller makes a color head and the contact sensor contact to each other vertically for generating the contact signal, and obtains a second height value according to a vertical movement distance between the printing module and the contact sensor. The controller obtains a height difference between the 3D print head and the color head according to the first height value and the second height value.

Abstract: An image file transform method and a three-dimensional (3D) printing system are provided. The method includes: analyzing a first slicing image file having a first size to obtain a valid region in the first slicing image file; performing an image file transform operation on the first slicing image file according to the valid region to generate a second slicing image file having a second size, wherein the second slicing image file includes the valid region, and the second size is smaller than the first size; and setting an index for the second slicing image file according to the image file transform operation, wherein the index is used for a 3D printing apparatus to set a printing start point corresponding to the second slicing image file. Therefore, a storage efficiency of slicing image files for 3D printing is improved.

Abstract: The invention provides a 3-D printing method including: providing a liquid-state forming material in a 3-D printing apparatus; detecting a temperature of the liquid-state forming material; and adjusting corresponding curing parameters according to the temperature and curing characteristics of the liquid-state forming material to cure the liquid-state forming material layer by layer, so as to form and stack multiple cured layers to form a 3-D object. The invention can ensure consistency of a molded object printed by the 3-D printing apparatus using the liquid-state forming material and thus, solve the issue of inconsistent quality occurring to the molded object printed by the 3-D printing apparatus using the liquid-state forming material due to the curing speed of the liquid-state forming material varying with temperatures.

Abstract: A three-dimensional printing apparatus and a three-dimensional printing method are provided. The three-dimensional printing apparatus includes a tank, an injection module, a platform movably disposed above the bottom of the tank, a curing module, and a control module. The tank has a forming area and a separating area in a stepped manner on a bottom thereof, and the forming area is higher than the separating area. The injection module includes a storage tank and an injection pipe connected thereto, and a forming material is filled therein to be applied to the forming area. The curing module is disposed beside the tank or the platform to cure the forming material between the platform and the forming area to be a curing layer. The control module is electrically connected to the injection module, the curing module, and at least one of the tank and the platform to perform a relative movement.

Abstract: A joint structure includes a joint hollow body having a first plate and a second plate arranged opposite to each other, and the second plate has a penetrating hole for defining an axial direction with respect to the penetrating hole, and an external side plate is extended in the defined axial direction from the external periphery of the first plate and connected to the external periphery of the second plate, so as to enhance the structural strength of the joint hollow body and prevent the joint hollow body from having concentrated stress or being cracked easily.

Abstract: A 3D printing filament feeding apparatus for feeding a filament (10) includes a primary driving wheel (100), a secondary driven wheel (300), a measurement scale rotating disk (400), an optical sensor (500) and a cleaning assembly (600). The primary driving wheel (100) is connected to a power source (200) and driven thereby to rotate. The secondary driven wheel (300) is arranged adjacent to and parallel with the primary driving wheel (100). The measurement scale rotating disk (400) includes scale structures (410) and rotates together with the secondary driven wheel (300). The optical sensor (500) detects the scale structures (410). The cleaning assembly (600) engages with the scale structures (410); wherein the secondary driven wheel (300) engages with the filament (10) and rotates along a driven direction (D) together therewith such that the scale structures (410) passes through the cleaning assembly (600), followed by detection of the optical sensor (500).

Abstract: The invention relates to a 3-D printing apparatus including a tank, a platform, a fixture, a solidifying module and a control module. The tank is flexible and filled with a liquid-state forming material. The platform is disposed in the tank. The control module drives the fixture to deform the tank, so as to form a first gap between the platform and a bottom of the tank for the liquid-state forming material to flow in. The solidifying module in controlled by the control module to solidify the liquid-state forming material between the platform and the bottom of the tank, so as to form a solidified layer. The invention can effectively reduce a processing time for manufacturing each solidified layer, such that an overall processing time can be reduced to achieve preferable molding efficiency.

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 sensing device of a three dimensional object being printed is provided. The sensing device includes a roller, a ring shape equipment, a sensor, and a processor. The roller is utilized to perform planarization of the 3D printing object. The ring shape equipment has the same axial as the roller and rotates with the roller. The sensor is utilized to detect rotational speed of the ring shape equipment. The processor determines whether the roller is in contact with the 3D printing object according to the rotational speed of the ring shape equipment. Thereby, contact between the roller and the 3D printing object may be determined without disposed sensor on the roller.