Abstract: A three-dimensional printing apparatus including a supporting platform, first tanks, an elevating platform disposed above the supporting platform, a light source module disposed corresponding to the elevating platform, and a control unit is provided. The first tanks are disposed on the supporting platform and filled with liquid forming materials respectively. After choosing one of the liquid forming materials, the control unit controls the supporting platform to move, in relative to the light source module and the elevating platform, till the chosen liquid forming material is moved to correspond to the light source module, so as to form a three-dimensional object through the chosen liquid forming material. Another three-dimensional printing apparatus is provided, in which a control unit controls the light source and the elevating platform to move to correspond to the chosen liquid forming material, so as to form a three-dimensional object through the chosen liquid forming material.

Abstract: A 3-D printing apparatus is configured to make a modeling material form a 3-D object layer by layer. The 3-D printing apparatus includes a printing assembly and a cleaning unit. The printing assembly includes a feeding tube, a nozzle and a driving wheel set disposed between the feeding tube and the nozzle to drive the modeling material transferred to the nozzle from the feeding tube and then exiting from the printing assembly via the nozzle so as to form a 3-D object layer by layer. The cleaning unit has a brush, in which the brush leans against on the driving wheel set to clean out the residual modeling material while the driving wheel set rotates relatively to the cleaning unit.

Abstract: A three-dimensional printing apparatus including a base, a printing unit, and a control unit is provided for forming a three-dimensional object on a forming area layer by layer with a material. The base has a body and a moving member assembled therein. The forming area covers the moving member. The control unit is electrically connected to the moving member and the printing unit. The printing unit is controlled by the control unit, wherein after the three-dimensional object is formed, the moving member is controlled by the control unit to move relative to the body, such that at least a portion of the three-dimensional object is detached from the moving member.

Abstract: A three-dimensional image file searching method and a three-dimensional image file searching system are provided, and the three-dimensional image file searching method includes the following steps. A three-dimensional query image file is received. The three-dimensional query image file is converted to generate a first image group including a plurality of two-dimensional image files. The first image group is compared with a plurality of second image groups corresponding to a plurality of three-dimensional candidate image files respectively in a database, so as to obtain a search result conforming to the three-dimensional query image file.

Abstract: A buffer structure is configured to an office machine including a base and a cover pivotally connected to the base provided. The buffer structure includes a first engaging portion fixed to the cover, a rotation member and an elastic member. The rotation member includes a rotation shaft pivotally connected to the base, a second engaging portion located on a rotation path of the first engaging portion, and a fixing portion. The elastic member includes a first end and a second end opposite to each other. The first end and the second end are fixed to the base and the fixing portion. When the cover rotates toward the base, the first engaging portion is engaged to the second engaging portion to drive the rotation member to rotate along a first clock direction, and the elastic member is deformed to exert a moment to the rotation member along a second clock direction.

Abstract: A printing head module is provided. The printing head module includes a bracket, a motor and a printing head. The bracket is slidingly disposed on a sliding rail and includes a containing cavity and at least one first locking portion. The motor is coupled to the bracket for driving the bracket to slide along the sliding rail. The printing head includes a material-supply channel, a nozzle and at least one second locking portion structurally corresponding to the first locking portion. The material-supply channel is connected to the nozzle, so that when the printing head is detachably disposed in the containing cavity, the second locking portion is locked with the first locking portion to fix the printing head to the bracket.

Abstract: A heating platform including a substrate, a heating plate, a conducting plate and a temperature sensing element is provided. The substrate has a first surface for forming a three dimensional (3D) object and an opposite second surface. The heating plate is attached to the second surface of the substrate to heat the substrate. The conducting plate is attached to the heating plate, and the heating plate is coved between the substrate and the conducting plate, wherein the area of the conducting plate is smaller than the area of the substrate, and an end of the conducting plate extends to the outer of the heating plate. The temperature sensing element is disposed at the end of the conducting plate extending to the outer of the heating plate to sense the temperature of the substrate through the conducting plate. A 3D printing apparatus including the heating platform aforementioned is also provided.

Abstract: A three-dimensional printing apparatus including a chassis, a tank, an outer cover and a shielding module is provided. The tank is disposed at the chassis and adapted to be filled with a liquid forming material. The outer cover is pivoted on the chassis. The shielding module includes a pivot and a mask. The pivot is disposed on the chassis and beside the tank. The mask is winding on the pivot and connected with the outer cover. When the outer cover rotates to a first position and covers the tank, the mask is winding on the pivot. When the outer cover rotates to a second and exposes the tank, the outer cover pulls the mask out of the pivot, so that the mask covers the tank in order to shield the liquid forming material filled in the tank.

Abstract: A three-dimensional (3-D) printing apparatus includes a base, a printing head module and a control unit. The base includes a carrying surface and a guiding mechanism. The guiding mechanism extends along a long-axis direction of the base. The printing head module movably disposed on the guiding mechanism. The length of the base is greater than the length of the printing head module, such that the printing head module is suitable for moving relatively to the guiding mechanism. The control unit coupled to the base and the printing head module controls the printing head module to move relatively to the base according to extensional information of the digital 3-D model along the long-axis direction, such that the printing head module dispenses a material on the carrying surface to form a 3-D object when moving relatively to the base.

Abstract: A cleaning device for removing a residue adhered to a discharging nozzle of a three-dimensional printing apparatus is provided. The cleaning device includes a plate and at least one flexible cleaning member disposed on the plate. The flexible cleaning member has a notch corresponding to an outer profile of the discharging nozzle.

Abstract: A printing system and a data transmission method thereof are provided. The printing system includes a peripheral unit and a controller. The peripheral unit is configured to execute a data printing function and includes a digital data. The controller is coupled to the peripheral unit. The controller converts a digital control command to obtain an analog control signal, and transmits the analog control signal to the peripheral unit. The peripheral unit converts the analog control signal into the digital control command when the analog control signal is received by the peripheral unit. The peripheral unit converts a corresponding digital data into an analog signal according to the digital control command to transmit the analog signal to the controller.

Abstract: A printing system and a data transmission method thereof are provided. The printing system includes a peripheral unit and a controller. The peripheral unit is configured to execute a data printing function and includes a digital data. The controller is coupled to the peripheral unit. The controller converts a digital control command to obtain an analog control signal, and transmits the analog control signal to the peripheral unit. The peripheral unit converts the analog control signal into the digital control command when the analog control signal is received by the peripheral unit. The peripheral unit converts a corresponding digital data into an analog signal according to the digital control command to transmit the analog signal to the controller.

Abstract: A three-dimensional printing method for forming a three-dimensional object on a base is provided. The method comprises providing a model library comprising at least one supporting member, selecting the at least one supporting member from the model library and disposing the at least one supporting member onto the base. The three-dimensional object is printed over the base and the at the least supporting member, and the three-dimensional object has an overhanging portion relative to the base and the at least one supporting member is filled between the overhanging portion and the base.

Abstract: A driven roller unit and a paper feeding device are provided. The paper feeding device includes a frame, the driven roller unit and a driving roller. The frame has a dome concave. The driven roller unit has an omnidirectional ball, wherein the omnidirectional ball is in the dome concave. The driving roller is disposed above the frame and the driven roller unit. When the driving roller presses on the driven roller unit, an angle included by the driving roller and the driven roller unit is adjusted due to the rotation of the omnidirectional ball relative to the dome concave, and therefore the force applied on the driven roller unit is uniform.

Abstract: A fixing element, a cover device and a multifunction printer are provided. The multifunction printer includes a machine body, the cover device and the fixing element. The cover device is disposed on the machine body and includes a first cover, a second cover and a third cover, wherein the second cover is between the first cover and the third cover. The fixing element passes through and is fixed on the second cover. The first cover and the second cover open relative to the third cover when the fixing element locks the first cover and the second cover, and the first cover opens relative to the second cover and the third cover when the fixing element locks the second cover and the third cover.

Abstract: A device for adjusting gap between platen and print head includes a base, a printing unit, a platen and a pair of adjusting elements. The printing unit is located on the base and includes a print head. The platen is located between the printing unit and the base, in which the platen has a platen-portion and a pair of adjusting-portions, the adjusting-portions are disposed at opposite sides of the platen-portion, and each of the adjusting-portions has a step-guiding-surface. The adjusting elements are disposed beside the platen and correspondingly contact the step-guiding-surfaces of the adjusting-portions, in which the distance between the platen and the print head is varied with positions of the adjusting elements relative to the step-guiding-surfaces.

Abstract: A three-dimensional (3D) scanner including a light-source module, a screen, a rotary platform, an image capturing unit and a process unit is provided. The light source module is configured to emit a beam. The screen disposed on a transmission path of the beam has a projection surface facing the light source module. The rotary platform carrying a 3D object is disposed between the light source module and the screen. The 3D object is rotated to a plurality of object orientations about a rotating axis to form a plurality of object shadows on the projection surface. The image capturing unit is configured to capture the object shadows from the projection surface to obtain a plurality of object contour images. The process unit is configured to read and process the object contour images to build the digital 3D model related to the 3D object according to the object contour images.

Abstract: A three-dimensional printing apparatus is provided. The three-dimensional printing apparatus includes a base, a printing head, a plurality of material-supplying spools and a switching unit. The base has a carrying surface. The printing head is disposed above the base. The material-supplying spools respectively include a plurality of construction materials. The construction materials have a plurality of characteristics, and the characteristics are different from each other. The switching unit is configured to selectively connect at least one of the spools to the printing head according to the characteristics. The construction materials of the selected material-supplying spools are dispensed on the carrying surface by the printing head.

Abstract: A three-dimensional (3D) apparatus including a processing unit, a base and a printing head is provided. The processing unit is configured to read and process digital 3D model information. The base is coupled to and controlled by the processing unit. The base includes a plurality of heating regions. The processing unit is configured to selectively heat at least one of the heating regions according to the digital 3D model information. The printing head is disposed above the base. The printing head is coupled to and controlled by the processing unit to dispense a thermal melting material layer-by-layer on the heated heating region to form a 3D object related to the digital 3D model information.

Abstract: A printing head module and a three dimensional (3-D) printing apparatus using the same are provided. The 3-D printing apparatus includes a base and the printing head module. The printing head module is disposed above the base and includes a printing head and at least one material spool. The printing head includes a plurality of assembling pieces assembled with each other to form the printing head and define a nozzle of the printing head. Each of the assembling pieces includes at least one material-supply groove. The material-supply grooves of any two adjacent assembling pieces are located corresponding to each other to form at least one material-supply channel together. Each material spool is connected to the material-supply channel for providing at least one fluid material to the material-supply channel. The fluid material is transmitted via the material-supply channel to be dispensed on the base.