Abstract: A control method for printer, the control method includes: controlling a first group of heating units of a printing head to output first printing energy to form printing dots with a first density on a printing medium; and controlling a second group of heating units of the printing head to continue outputting second printing energy to form printing dots with a second density on the printing medium, wherein the second group of heating units consists of heating units need to implement printing energy compensation in the first group of heating units. By means of the control method, the printing densities of the printing dots corresponding to the heating units need to implement printing energy compensation are improved, and the problem of non-uniform printing density of each printing dot caused by non-uniform pressure exerted on the printing platen by the printing head can be effectively solved.

Abstract: A control method for printer, the control method includes: controlling a first group of heating units of a printing head to output first printing energy to form printing dots with a first density on a printing medium; and controlling a second group of heating units of the printing head to continue outputting second printing energy to form printing dots with a second density on the printing medium, wherein the second group of heating units consists of heating units need to implement printing energy compensation in the first group of heating units. By means of the control method, the printing densities of the printing dots corresponding to the heating units need to implement printing energy compensation are improved, and the problem of non-uniform printing density of each printing dot caused by non-uniform pressure exerted on the printing platen by the printing head can be effectively solved.

Abstract: A device and a method for controlling a bit density of a magnetic card (2) are provided. Said control device comprises a stepper motor (1) providing power to drive the magnetic card (2) or a recording magnetic head (15), a transmission mechanism transferring power to the magnetic card (2) or the recording magnetic head (15), a CPU (10) sending magnetic recording information, a track data encoder (13) receiving a magnetic writing pulse signal (CLK1) and generating magnetic writing data in synchronization with the magnetic writing pulse signal (CLK1), and a magnetic head driving circuit (14) outputting a magnetic writing control signal based on the magnetic writing data. The frequency of the magnetic writing pulse signal (CLK1) and the frequency of a driving pulse signal (CLK0) of the stepper motor are in a linear relationship. Said control method is a method for controlling a bit density.

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: The present invention discloses a ticket issuing method, comprising: step a: acquiring the image of a ticket paper for issuing a ticket, recognizing a ticket number from the image acquired and determining the validity of the ticket number recognized, to obtain a valid ticket number; step b: printing on the corresponding ticket paper the ticket issuing information containing the ticket number, when receiving a ticket issuing instruction. The present invention also discloses a ticket issuing device, comprising: an image acquisition unit (35), a printing unit (34) and a controller (31) for sending the image of the ticket paper acquired by the image acquisition unit or the ticket number recognized from the image of the ticket paper to a host computer (40) and controlling the printing unit (34) to print on the ticket paper according to the ticket issuing instruction and the ticket issuing information received.

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: A device and a method for controlling a bit density of a magnetic card (2) are provided. Said control device comprises a stepper motor (1) providing power to drive the magnetic card (2) or a recording magnetic head (15), a transmission mechanism transferring power to the magnetic card (2) or the recording magnetic head (15), a CPU (10) sending magnetic recording information, a track data encoder (13) receiving a magnetic writing pulse signal (CLK1) and generating magnetic writing data in synchronization with the magnetic writing pulse signal (CLK1), and a magnetic head driving circuit (14) outputting a magnetic writing control signal based on the magnetic writing data. The frequency of the magnetic writing pulse signal (CLK1) and the frequency of a driving pulse signal (CLK0) of the stepper motor are in a linear relationship. Said control method is a method for controlling a bit density.