Abstract: The disclosure provides a double-sided printing system and a control method thereof. The double-sided printing system comprises: a first generation unit for generating first printing data and a second generation unit for generating second printing data; a first data buffer area for receiving and caching the first printing data, a second data buffer area for receiving and caching the second printing data, a first print head for printing the first printing data on the first side of the medium, and a second print head for printing the second printing data on the second side of the medium. By means of the double-sided printing system, the data processing load of the controller of the printer can be decreased; furthermore, it enables double-sided printing without changing the application programs of a single-sided printing system, conveniently converting a single-sided printing system to be a double-sided printing system.

Abstract: A thermal print head detecting device comprises a power supply (1), a power supply switch (4), a power supply switch control circuit (5), a first detecting resistor (Ra), a second detecting resistor (Rb), a print head (2) to be detected and a print head control circuit (3); an output end of the power supply (1) is connected to a common joint (N) of respective heating elements of the print head through the power supply switch (4), the first detecting resistor (Ra) is connected in parallel with the power supply switch (4); an output end of the power supply switch control circuit (5) is connected to a control end of the power supply switch (4); the second detecting resistor (Rb) has one end connected to the common joint (N) of the heating element units, and the other end grounded; and the print head control circuit (3) controls strobing of each heating element unit of the print head.

Abstract: Disclosed are a recording medium accumulating device and a method for accumulating recording medium. The device includes a cylindroid roller for winding up the recording medium and at least two endless belts, peripheral surfaces of the cylindroid roller contact with external surfaces of the endless belts respectively, and a closed medium-feeding passage is formed between the contacting surfaces, a medium-entering passage and a medium-discharging passage for the recording medium are respectively formed between two adjacent endless belts, the medium-entering passage and the medium-discharging passage connect with the medium-feeding passage, the medium-feeding passage drives the recording medium to rotate with the cylindroid roller using the friction force of the contacting surfaces, so as to accumulate the recording medium.

Abstract: A thermal print head detecting device comprises a power supply (1), a power supply switch (4), a power supply switch control circuit (5), a first detecting resistor (Ra), a second detecting resistor (Rb), a print head (2) to be detected and a print head control circuit (3); an output end of the power supply (1) is connected to a common joint (N) of respective heating elements of the print head through the power supply switch (4), the first detecting resistor (Ra) is connected in parallel with the power supply switch (4); an output end of the power supply switch control circuit (5) is connected to a control end of the power supply switch (4); the second detecting resistor (Rb) has one end connected to the common joint (N) of the heating element units, and the other end grounded; and the print head control circuit (3) controls strobing of each heating element unit of the print head.

Abstract: Disclosed are a recording medium accumulating device and a method for accumulating recording medium. The device includes a cylindroid roller for winding up the recording medium and at least two endless belts, peripheral surfaces of the cylindroid roller contact with external surfaces of the endless belts respectively, and a closed medium-feeding passage is formed between the contacting surfaces, a medium-entering passage and a medium-discharging passage for the recording medium are respectively formed between two adjacent endless belts, the medium-entering passage and the medium-discharging passage connect with the medium-feeding passage, the medium-feeding passage drives the recording medium to rotate with the cylindroid roller using the friction force of the contacting surfaces, so as to accumulate the recording medium.