Abstract: A label roll positioning device is provided for a barcode printer and includes at least one slide rail, at least one positioning rail, and at least one pair of roll retainers. The slide rail and the positioning rail are arranged in a parallel manner inside a housing of the barcode printer. The positioning rail forms teeth on a surface thereof. At least one of the roll retainers has a bottom forming a mounting portion that is slidably fit and mounted to the slide rail for being slidable along the slide rail. The roll retainers are spaced to receive a roll of label therebetween in a securely held manner. The roll retainer is provided therein at least one positioning plug having an end forming a locking section. The positioning plug can be downward driven to have the locking section downward projecting out of the roll retainer, and the positioning plug can be upward driven to have the locking section back into concealment inside the roll retainer.

Abstract: A barcode label retention device is provided for a barcode printer. The barcode label retention device includes s at least one pair of label roll retainers, at least one pair of resilient elements, and at least one pair of fixing plates. The label roll retainers are mounted inside a housing of a barcode printer and spaced from each other to receive and retain a label roll therebetween. The resilient elements are arranged inside each label roll retainer, and the fixing plates are arranged inside each label roll retainer. The fixing plate is connected to the resilient element to provide the fixing plate with resiliency for inward depressibility or outward biasing so that a front portion of the fixing plate projects inwards beyond the label roll retainer to abut against opposite ends of the label roll, whereby the label roll can be securely held by the two fixing plates engaging the opposite ends thereof and the path of a winding/unwinding operation can be stabilized.

Abstract: A carbon ribbon retaining mechanism includes a barcode-printer base, an upper cover, a printing head device, and at least one pair of resilient fastener elements. The barcode-printer base has an upper portion forming a receiving space. The upper cover is coupled to the receiving space of the barcode-printer base for being downward closed to and covering the receiving space. At least one pawl is respectively formed on opposite edge portions of the upper cover. The printing head device is accommodated in the receiving space. A carbon ribbon retention shaft is arranged above the printing head device. The resilient fastener elements are mounted above the printing head device. By means of the engagement effected between the pawls of the upper cover and the resilient fastener elements, the upper cover is fixed to and above the printing head device to cover the receiving space.

Abstract: A detecting device and a detecting method for monitoring a battery module are provided. The battery module is electrically connected to a load and includes a first battery unit, a second battery unit and a connecting device. The connecting device connects the positive electrode of the first battery unit to the negative electrode of the second battery unit. The detecting device includes a shunt, a voltage detecting module and a control module. The shunt is serial connected between the battery module and the load to measures the load current. The voltage detecting module measures the voltage difference across the connecting device between the positive electrode and the negative electrode. The control module computes the equivalent resistance across the connecting device between the positive electrode and the negative electrode according to the load current and the voltage difference.

Abstract: The present invention provides a battery module state detection method. The battery module includes a battery unit and is connected to a load. The method for detecting the battery module status includes the following steps. First, measure an on-load voltage value of the battery unit and a load current value of a load. Next, calculate an instant resistance value of the battery unit according to a no-load voltage value of the battery unit, the on-load voltage value and the load current value. Finally, obtain an operating state of the battery unit according to the instant resistance and a relationship between the internal resistance and discharging time. By the method of the present invention, the user can monitor the remaining energy of the battery module accurately in real time and therefore prevent the electrical hazard caused by over-discharging the battery module.

Abstract: A carbon ribbon retaining mechanism includes a barcode-printer base, an upper cover, a printing head device, and at least one pair of resilient fastener elements. The barcode-printer base has an upper portion forming a receiving space. The upper cover is coupled to the receiving space of the barcode-printer base for being downward closed to and covering the receiving space. At least one pawl is respectively formed on opposite edge portions of the upper cover. The printing head device is accommodated in the receiving space. A carbon ribbon retention shaft is arranged above the printing head device. The resilient fastener elements are mounted above the printing head device. By means of the engagement effected between the pawls of the upper cover and the resilient fastener elements, the upper cover is fixed to and above the printing head device to cover the receiving space.

Abstract: A barcode label retention device is provided for a barcode printer. The barcode label retention device includes s at least one pair of label roll retainers, at least one pair of resilient elements, and at least one pair of fixing plates. The label roll retainers are mounted inside a housing of a barcode printer and spaced from each other to receive and retain a label roll therebetween. The resilient elements are arranged inside each label roll retainer, and the fixing plates are arranged inside each label roll retainer. The fixing plate is connected to the resilient element to provide the fixing plate with resiliency for inward depressibility or outward biasing so that a front portion of the fixing plate projects inwards beyond the label roll retainer to abut against opposite ends of the label roll, whereby the label roll can be securely held by the two fixing plates engaging the opposite ends thereof and the path of a winding/unwinding operation can be stabilized.

Abstract: A label roll positioning device is provided for a barcode printer and includes at least one slide rail, at least one positioning rail, and at least one pair of roll retainers. The slide rail and the positioning rail are arranged in a parallel manner inside a housing of the barcode printer. The positioning rail forms teeth on a surface thereof. At least one of the roll retainers has a bottom forming a mounting portion that is slidably fit and mounted to the slide rail for being slidable along the slide rail. The roll retainers are spaced to receive a roll of label therebetween in a securely held manner. The roll retainer is provided therein at least one positioning plug having an end forming a locking section. The positioning plug can be downward driven to have the locking section downward projecting out of the roll retainer, and the positioning plug can be upward driven to have the locking section back into concealment inside the roll retainer.

Abstract: A printing mechanism is provided for a barcode printer and includes a frame, a printing head, a carbon ribbon axle, and a carbon ribbon collection axle. The frame is mounted to an upper end portion of an upper casing member. The printing head is mounted in the frame to effect printing of labels. The carbon ribbon axle is arranged in a lower portion of the frame and is located below the printing head for connecting and retaining a carbon ribbon that supplies a toner required for carrying out the printing of the labels by the printing head. The carbon ribbon collection axle is arranged in an upper portion of the frame and is located above the printing head in an arrangement that is reversed to the carbon ribbon axle to allow the carbon ribbon from the carbon ribbon axle to be rolled up in the carbon ribbon collection axle after the printing operation carried out by the printing head.

Abstract: An ink ribbon cartridge is used in a label printer, including: a frame having two opposite side boards, a top board, and a bottom board, of which the top and bottom boards are mounted to top and bottom ends of the side boards; two first pivots respectively mounted to opposing surfaces of the opposite side boards and horizontally opposite to each other; two second pivots respectively mounted to the opposing surfaces of the opposite side boards and horizontally opposite to each other, the second pivots being arranged lower than the first pivots; and two channel structures including two first guides and two second guides, which are formed on the opposing surfaces of the opposite side boards and opposite to each other so as to delimit the two channel structures for guiding a printing module of the label printer along the channel structures for coupling to the ink ribbon cartridge.

Abstract: A movable print head is provided for a label printer, including: a control panel module having two pivots arranged on opposite sides of the control panel module and coupled to opposite sides of a body of the label printer to serve as rotational center for rotation of the control panel module; and a printing module fixed to an internal vertical surface of the control panel module and including two guide-in devices on opposite sides of the printing module to guide in an ink ribbon cartridge and a print head arranged between the two guide-in devices. The two guide-in devices of the printing module are movable in unison with the rotation of the control panel module to effect movable adjustment for guiding in the ink ribbon cartridge.

Abstract: There is disclosed a portable printer operable in either a strip mode or a peel mode. In the peel mode, a pressure roll cooperates with a carrier web and the platen roll to strip labels from the web. A battery-powered electric motor advances a printable web through the printer. In order to reduce drag on the motor in the strip mode, the pressure roll is held in out of pressure contact with the platen roll.

Abstract: There is disclosed a portable printer operable in either a strip mode or a peel mode. In the peel mode, a pressure roll cooperates with a carrier web and the platen roll to strip labels from the web. A battery-powered electric motor advances a printable web through the printer. In order to reduce drag on the motor in the strip mode, the pressure roll is held in out of pressure contact with the platen roll.