Abstract: The invention discloses a location-detecting system including an indication region, one of a camera unit and a light-emitting unit, and an optical device. The indication region is for indication of a target location thereon. One of the camera unit and the light-emitting unit is disposed at a first location of the indication region, and the optical device is disposed at a second location of the indication region and corresponding to one of the camera unit and the light-emitting unit. The optical device is for forming one of a specular reflection camera unit and a specular reflection light-emitting unit, wherein the specular reflection camera unit originates from the camera unit, and the specular reflection light-emitting unit originates from the light-emitting unit.

Abstract: A multi-band planar inverted-F antenna includes a radiating unit, a ground unit and a feeding unit. The radiating unit includes a common radiating element, a high-frequency (HF) radiating element and a low-frequency (LF) radiating element. A quasi U-shaped slot is defined between the HF radiating element and the LF radiating element. The ground unit is electrically connected to one side of the common radiating element. The feeding unit includes a strip electrically connected to one side of the HF radiating element. The ground unit includes a ground point and an inverted-L short-line connected to the ground point at one end thereof. The inverted-L short-line is also electrically connected to the common radiating element at another end thereof. A loop surface current induced by the inverted-L short-line can advantageously enhance bandwidth of the multi-band planar inverted-F antenna at frequencies of interest.

Abstract: A multi-band planar inverted-F antenna includes a radiating unit, a ground unit and a feeding unit. The radiating unit includes a common radiating element, a high-frequency (HF) radiating element and a low-frequency (LF) radiating element. A quasi U-shaped slot is defined between the HF radiating element and the LF radiating element. The ground unit is electrically connected to one side of the common radiating element. The feeding unit includes a strip electrically connected to one side of the HF radiating element. The ground unit includes a ground point and an inverted-L short-line connected to the ground point at one end thereof. The inverted-L short-line is also electrically connected to the common radiating element at another end thereof. A loop surface current induced by the inverted-L short-line can advantageously enhance bandwidth of the multi-band planar inverted-F antenna at frequencies of interest.

Abstract: An ink-jetting time is set according to a moving speed of a print head while the print head operates. The ink-jetting time has a short delay when the moving speed is a little lower than a maximum moving speed, and has a longer delay when the moving speed is much lower than the maximum moving speed. The ink-jetting time is not delayed when the print head moves at the maximum moving speed.

Abstract: A method for maintaining the inkjet chip of an inject device. The inkjet device comprises an ink cartridge, a carrier, a wiper and a wiper stage. The carrier is used to load the ink cartridge. The wiper stage is used to load the wiper. The ink cartridge contains ink and has an inkjet chip. The inkjet chip has at least a set of inkjet nozzles. The method comprises the steps of: (a) relatively moving the carrier onto the wiper stage to locate the wiper to a position where the wiper can wipe the inkjet chip; (b) spraying the ink contained in the ink cartridge onto the wiper to moisturize the wiper; and (c) relatively reciprocating the wiper stage and the carrier to make the wiper wipe the inkjet chip.

Abstract: A method and device for boosting printing speed of a printer. The method includes moving a printhead toward a first swath area of a medium according to a first direction, controlling the printhead according to a print data for printing the print data on the first swath area, and moving the printhead toward a second swath area next to the first swath area according to a second direction opposite to the first direction when the printhead has left the first swath area and the medium is still moving along a predetermined direction to make the second swath area capable of being printed by the printhead.

Abstract: A printing apparatusincludes a printhead for ejecting ink from a plurality of nozzles and a signal generator for generating printing pulses and non-printing pulses used to control heaters. The printing pulses control the heaters to generate sufficient heat energy to eject ink from the nozzles for printing data, and the non-printing pulses control the heaters to generate heat energy that is not sufficient to eject ink from the nozzles for raising a temperature of the ink. The printing apparatus also includes a print data comparator for comparing a percentage of data printed during a predetermined period of time with a threshold value, anda control circuit for varying the non-printing pulses generated by the signal generator according to the percentage of data printed during the predetermined period of time and the threshold value.

Abstract: A printer includes a position detecting mechanism for detecting and calibrating a position of a carriage on a track, and a print head installed on the carriage for printing a document. The position detecting mechanism has a first portion installed at a calibration position neighboring the track, and a second portion installed on the carriage. The calibration position is positioned within a document printing range of the print head so that the second portion is capable of passing by the first portion during a printing process.

Abstract: A method for maintaining the inkjet chip of an inject device. The inkjet device comprises an ink cartridge, a carrier, a wiper and a wiper stage. The carrier is used to load the ink cartridge. The wiper stage is used to load the wiper. The ink cartridge contains ink and has an inkjet chip. The inkjet chip has at least a set of inkjet nozzles. The method comprises the steps of: (a) relatively moving the carrier onto the wiper stage to locate the wiper to a position where the wiper can wipe the inkjet chip; (b) spraying the ink contained in the ink cartridge onto the wiper to moisturize the wiper; and (c) relatively reciprocating the wiper stage and the carrier to make the wiper wipe the inkjet chip.

Abstract: The invention is to provide a bipolar plate having keys on at least two sides thereof, with such keys have piercing holes thereon; a bipolar plate, a membrane electrode assembly (“MEA”) and a gasket are formed as a unit in the Bipolar Plate Assembly (“BPA”), and provided any of the MEA in a BPA is damaged and needs to be replaced, keys added on other BPAs enable screw rods to fasten sectionally, thus the BPA containing the damaged MEA can be separated, such that the damaged MEA can be dissembled and replaced. The invention further provides a PEM fuel cell, which comprises a plurality of BPAs, with each of such BPA having a number of bipolar plates having keys, MEAs and gaskets. Moreover, the invention further provides a method for replacing MEAs in a PEM fuel cell, whereby damaged MEAs in a PEM fuel cell can be expediently and safely dissembled, repaired or replaced, and the procedure for re-assembling a PEM fuel cell is thus simplified.

Abstract: A printing device includes a print unit for printing data. In each printing procedure, the printer separates at least a printing division from a path that the print unit passes through in the printing procedure and determines if the path includes a non-printing division according to the print data. The printer controls the print unit to move at a first velocity and print the document when the print unit passes through the printing division. If the path includes a non-printing division, the printer controls the print unit to stop printing the document and to move at a second velocity within the non-printing division when the print unit passes through the non-printing division.

Abstract: An ink jet printer with an independent preheating driving circuit includes at least an ink jet unit. Each ink jet unit has an input end for receiving energy, and a corresponding nozzle. When energy received by the ink jet unit via the input end exceeds a predetermined threshold value, the ink jet unit ejects ink from the nozzle. The printer also has a first driving circuit electrically connected to the input end for providing energy for printing, and a second driving circuit electrically connected to the input end for providing preheating energy. When the ink jet unit receives energy from the first driving circuit for printing, the second driving circuit stops providing the preheating energy to the ink jet unit.

Abstract: The invention provides a separator in lead acid battery, composed of fiber material and polymers; the polymers provide functions of increasing the mechanical strength for separators, avoiding shortage between positive and negative electrodes, and decreasing the thickness of separators. The invention also provides a manufacturing method of battery separators, whereby polymers are used to coat or absorb to porous separators through means of spraying, immersing, brushing, adhering or other similar means, thus acquiring thinner battery separators with increased mechanical strength.

Abstract: An ink jet printer has an ink jet printing head with a plurality of nozzles, an ink jet compensation controlling device for driving the ink jet printing head, and a detecting device for detecting a status of the nozzles. When the detecting device detects at least one malfunctioning nozzle, the ink jet compensation controlling device selects a group of normal nozzles according to the position of the malfunctioning nozzle and controls the group of normal nozzles to form corresponding printing strips on the document. The printing strips formed by the normal nozzles cover an area of the printing strips normally formed by the malfunctioning nozzle.

Abstract: A printer includes a position detecting mechanism for detecting and calibrating a position of a carriage on a track, and a print head installed on the carriage for printing a document. The position detecting mechanism has a first portion installed at a calibration position neighboring the track, and a second portion installed on the carriage. The calibration position is positioned within a document printing range of the print head so that the second portion is capable of passing by the first portion during a printing process.

Abstract: An ink-jet output control method used to control the printing quality of ink-jet output device achieving an even distribution of ink dots is provided, wherein the ink-jet output device, being driven by a step motor, is a printhead carriage on which a printhead is mounted. The ink-jet output control method includes: firstly, to set a number of time pulse values of every two adjacent ink dots in each step of the step motor under different velocity models; then, store these set values which are non-identical in a memory unit; next, the printhead determines the time interval of ink-jet signal sending according to these set time pulse values; lastly, the printhead spreads ink dots on a recording medium with unequal time interval interpolation on receiving ink-jet control signals, such that ink dots are well distributed, an even interpolation and better printing resolution can be achieved.

Abstract: A printing device includes a print unit for printing data. In each printing procedure, the printer separates at least a printing division from a path that the print unit passes through in the printing procedure and determines if the path includes a non-printing division according to the print data. The printer controls the print unit to move at a first velocity and print the document when the print unit passes through the printing division. If the path includes a non-printing division, the printer controls the print unit to stop printing the document and to move at a second velocity within the non-printing division when the print unit passes through the non-printing division.

Abstract: An ink jet printer has an ink jet printing head with a plurality of nozzles, an ink jet compensation controlling device for driving the ink jet printing head, and a detecting device for detecting a status of the nozzles. When the detecting device detects at least one malfunctioning nozzle, the ink jet compensation controlling device selects a group of normal nozzles according to the position of the malfunctioning nozzle and controls the group of normal nozzles to form corresponding printing strips on the document. The printing strips formed by the normal nozzles cover an area of the printing strips normally formed by the malfunctioning nozzle.

Abstract: An ink-jet output control method used to control the printing quality of ink-jet output device achieving an even distribution of ink dots is provided, wherein the ink-jet output device, being driven by a step motor, is a printhead carriage on which a printhead is mounted. The ink-jet output control method includes: firstly, to set a number of time pulse values of every two adjacent ink dots in each step of the step motor under different velocity models; then, store these set values which are non-identical in a memory unit; next, the printhead determines the time interval of ink-jet signal sending according to these set time pulse values; lastly, the printhead spreads ink dots on a recording medium with unequal time interval interpolation on receiving ink-jet control signals, such that ink dots are well distributed, an even interpolation and better printing resolution can be achieved.