Abstract: An exemplary dual-band antenna includes a first antenna unit and a second antenna unit for receiving /sending radio frequency signals corresponding generating a low resonant frequency and a high resonant frequency. The first antenna unit is perpendicularly connected to the second antenna unit. The second antenna unit includes a feed portion, two slots, two gaps and two grounding sheets. The feed portion is electrically connected to the first antenna unit and is used to receive radio frequency signals. The slots are adjacent to one side of the first antenna unit and are defined at the both sides of the feed portion, and the slots are connected with the feed portion and used to radiate radio frequency signals. The gaps extend away from a position of the first antenna unit and are defined at the both sides of the feed portion, and each gap communicates with corresponding slot. The grounding sheets are symmetrically positioned at both sides of the feed portion.

Abstract: An optical scanning-type touch apparatus and an operation method thereof are provided. The optical scanning-type touch apparatus includes a touch area, a light scanning module, an imaging module and a calculating unit. The light scanning module is disposed at one corner of the touch area to emit a scanning light for scanning the touch area. The imaging module is disposed at another corner of the touch area adjacent the light scanning module to obtain a first angle between the scattering light and a edge of the touch area, wherein the edge of the touch area is between the light scanning module and the imaging module. The calculating unit receives the first angle, a second angle and a distance between the light scanning module and the imaging module to calculate a position of the object on the touch area.

Abstract: Laser engravers with a masking mechanism comprise a machine body, a laser-engraving mechanism inside the machine body, a working platform, and an exhauster. The laser-engraving mechanism includes a lens-cart rail that moves back and forth along a working track. The exhauster includes air outlets behind the working platform. The masking mechanism, which includes a reelable curtain-sheet, is installed above the air outlets so that while processing, the curtain-sheet is reeled out above the working platform and an air induction channel is formed to increase the working efficiency of the exhauster.

Abstract: A 3D object fabrication method implemented in a fabrication system includes the following steps. A digital object model is retrieved. Sections of the digital object model are respectively printed on plural pieces of plane material. The pieces of plane material are combined to form a physical 3D object of the digital object model.

Abstract: A touch panel includes a transparent substrate having a surface, a plurality of first touch sensor pads arrayed in a matrix on the surface, a plurality of second touch sensor pads arrayed in a matrix and staggered between the plurality of first touch sensor pads, a dielectric layer disposed upon the plurality of first touch sensor pads and the plurality of second touch sensor pads, a plurality of third touch sensor pads arrayed in a matrix on the dielectric layer, and a plurality of fourth touch sensor pads arrayed in a matrix on the dielectric layer and staggered between the plurality of third touch sensor pads. Each first touch sensor pad includes a first hollowed-out pattern, and each third touch sensor pad includes a second hollowed-out pattern and a solid portion formed around the second hollowed-out pattern, wherein a portion of the solid portion of each third touch sensor pad and a portion of the hollowed-out pattern of the first touch sensor pad overlap.

Abstract: A portable electronic device switches between antennas in order to decrease specific absorption rate (SAR). When the portable electronic device performs wireless communication, a sensor detects a distance between an object under test and the portable electronic device. The sensor sends a message to a control circuit, and the control circuit switches to a different antenna to decrease SAR.

Abstract: An electrical connector includes a dielectric housing, a plurality of conductive terminals, a fixing strip, a plurality of wires, and an upper shell, the dielectric housing having an upper face and a lower face opposite to the upper face, the upper face being provided with a plurality of terminal slots and recesses, the conductive terminals having a contact portion, a base portion, an engaged portion and received in the corresponding terminal slots, the engaged portion being engaged against the corresponding recesses, the fixing strip being transversally disposed on the upper face of the dielectric housing and across the conductive terminals and the terminal slots for securing the conductive terminals in the terminal slots, the wires respectively connecting with the base portions of the conductive terminals, and an upper shell is assembled on the dielectric housing above the fixing strip.

Abstract: A touch panel includes a transparent substrate having a surface, a plurality of first touch sensor pads arrayed in a matrix on the surface, a plurality of second touch sensor pads arrayed in a matrix and staggered between the plurality of first touch sensor pads, a dielectric layer disposed upon the plurality of first touch sensor pads and the plurality of second touch sensor pads, a plurality of third touch sensor pads arrayed in a matrix on the dielectric layer, and a plurality of fourth touch sensor pads arrayed in a matrix on the dielectric layer and staggered between the plurality of third touch sensor pads. Each first touch sensor pad includes a first hollowed-out pattern, and each third touch sensor pad includes a second hollowed-out pattern and a solid portion formed around the second hollowed-out pattern, wherein a portion of the solid portion of each third touch sensor pad and a portion of the hollowed-out pattern of the first touch sensor pad overlap.

Abstract: A suction device for sucking a print medium in a large inkjet printer is disclosed. The suction device is disposed on a suction conveying platen of the large inkjet printer, wherein the print medium is conveyed on the suction conveying platen for being printed by a printing module. The suction device comprises at least one suction member disposed on the top surface of the suction conveying platen for supporting the print medium. The suction member including a sucking portion, a non-sucking portion located alongside the sucking portion, and a plurality of orifices formed in the sucking portion.

Abstract: An inkjet printer having a rolling mechanism for flattening ink droplets is disclosed. The inkjet printer includes a carriage track being connected to a work platform of the inkjet printer, a printing module slidably mounted upon the carriage track to allow lateral movement, and at least one rolling mechanism disposed on the sidewall of a inkjet printhead assembly of the printing module or independently mounted upon the carriage track, wherein the rolling mechanism can roll over the surface of print media and flatten the ink droplets thereon before drying, to form printed image layers with uniform thickness for increasing image quality and reliability of the inkjet printer.

Abstract: A drum-changeable device for a printer comprises a plurality of drums and a switch device. The drums are disposed under the work surface of a printer. Each drum has a plurality of protrusions covered by the same kind of material and the protrusions of different drum are covered by different kinds of material for moving forward printing articles of different kinds of material. The switch device is connected with the drums for moving a suitable drum toward the work surface of the printer according to the kinds of material of the printing articles.

Abstract: A large-scale ink-jet printer having pre-printing, printing, and post-printing processing modules comprises a main body, a pre-printing processing module, a post-printing processing module, and a transporting device. The main body has a front end and a rear end and is provided with a printing processing module for proceeding with printing procedures on the center of the main body. The pre-printing processing module is provided on the front end of the main body while the post-printing processing module is provided on the rear end of the main body. The transporting device is connected with the printing, pre-printing, and the post-printing processing modules for transporting a material to be processed by the pre-printing, printing, and post-printing processing modules sequentially.

Abstract: An exemplary dual-band antenna includes a first antenna unit and a second antenna unit for receiving /sending radio frequency signals corresponding generating a low resonant frequency and a high resonant frequency. The first antenna unit is perpendicularly connected to the second antenna unit. The second antenna unit includes a feed portion, two slots, two gaps and two grounding sheets. The feed portion is electrically connected to the first antenna unit and is used to receive radio frequency signals. The slots are adjacent to one side of the first antenna unit and are defined at the both sides of the feed portion, and the slots are connected with the feed portion and used to radiate radio frequency signals. The gaps extend away from a position of the first antenna unit and are defined at the both sides of the feed portion, and each gap communicates with corresponding slot. The grounding sheets are symmetrically positioned at both sides of the feed portion.

Abstract: A spacing-sensing apparatus for use in a printing module of printer is disclosed. The spacing-sensing apparatus includes an oscillating device pivotally disposed on the frame of printing module, wherein the oscillating device has a swing body designed to be rotatably disposed on the lateral plate of the frame, and one end of the swing body is capable of making contact with the surface of a print media when the printing module descends to a predetermined distance from the printing module to the print media, allowing rotation of the other end thereof to trigger switch means for stopping the descending of printing module.

Abstract: A spacing-sensing apparatus for use in a printing module of printer is disclosed. The spacing-sensing apparatus includes an oscillating device pivotally disposed on the frame of printing module, wherein the oscillating device has a swing body designed to be rotatably disposed on the lateral plate of the frame, and one end of the swing body is capable of making contact with the surface of a print media when the printing module descends to a predetermined distance from the printing module to the print media, allowing rotation of the other end thereof to trigger switch means for stopping the descending of printing module.

Abstract: A 3D object fabrication method implemented in a fabrication system includes the following steps. A digital object model is retrieved. Sections of the digital object model are respectively printed on plural pieces of plane material. The pieces of plane material are combined to form a physical 3D object of the digital object model.

Abstract: A height-adjusting foolproof apparatus for a printing module used in a large ink-jet printer comprises a first adjusting member in connection with a printing module for moving the printing module vertically and a second adjusting member in connection with the large ink-jet printer for presetting the height of the printing module according to the thickness or hardness of a material. After the second adjusting member is adjusted to the position of the preset height, the first adjusting member together with the printing module are leveled downward until the first adjusting member is against a protrusion of the second adjusting member, so that the printing module is pulled at the preset height.

Abstract: An eye-training machine includes a front frame, a rear frame, two prisms and a driving unit. The front frame defines two windows. The rear frame defines two windows corresponding to the windows of the front frame. The prisms are disposed between the front and rear frames corresponding to the windows. The driving unit rotates the prisms.

Abstract: A non-step apparatus for adjusting the height of a set of paper pressing wheels disposed on at least one side of a large-scale UV ink-jet printer, comprising a turnable handle and a driving device, wherein one end of the driving device is connected with a pressing bar which can control the movement of the set of paper pressing wheels, and the other end is connected with the turnable handle so that the height of the set of paper pressing wheels can be adjusted via the movement of the pressing bar moved by rotating the turnable handle.

Abstract: A cleaning device for an inkjet head of a large-sized inkjet printer and a cleaning module thereof are disposed under the inkjet module of the printer for cleaning the ink of the inkjet head. The cleaning device includes the cleaning module and a base, wherein the cleaning module includes plural brushing seats and a front end of an engaging seat disposed on the brushing seat is provided with a flexible curved rubber scraper. The base is pivoted by the cleaning module therein and the base is provided with a striking device. When the striking device rotates and shifts in a y-shaped sliding groove disposed on the lateral sheet of the base, the cleaning module could be lifted, lowered and horizontally moved in the base to clean the inkjet head.