Shandong New Beiyang Information Technology Co., Ltd.

Xiangang Yang

Tianxin Jiang

Zhigang Xu

Zhengmin Zhang

Guangdong Hu

Yuguo Wang

Changgang Gu

A thermal print head detecting device comprises a power supply (), a power supply switch (), a power supply switch control circuit (), a first detecting resistor (Ra), a second detecting resistor (Rb), a print head () to be detected and a print head control circuit (); an output end of the power supply () is connected to a common joint (N) of respective heating elements of the print head through the power supply switch (), the first detecting resistor (Ra) is connected in parallel with the power supply switch (); an output end of the power supply switch control circuit () is connected to a control end of the power supply switch (); 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 () controls strobing of each heating element unit of the print head. The thermal print head detecting device does not need an exclusive power supply, which prominently simplifies the circuit of the detecting device and decreases the cost.

Thermal print head detecting device and detecting method, and a heat printer using the same

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.

Recording medium accumulating device and method

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Shandong, China

Xiangang Yang