CN102476507A - Printing method of thermal printer - Google Patents
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- CN102476507A CN102476507A CN2010105595886A CN201010559588A CN102476507A CN 102476507 A CN102476507 A CN 102476507A CN 2010105595886 A CN2010105595886 A CN 2010105595886A CN 201010559588 A CN201010559588 A CN 201010559588A CN 102476507 A CN102476507 A CN 102476507A
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Abstract
The invention discloses a printing method and device of a thermal printer, which are used for improving the printing speed of the thermal printer. The method comprises the following steps: on a piece of thermal paper, a current dot-row data latched by the current dot-matrix data to be printed in the thermal printer is printed and processed, during the printing and processing of the current dot-row data, data processing is performed, wherein the data processing comprises: load of the next dot-row data, and/or matrix conversion processing on the next dot-matrix data to be printed, and the display of the current dot-row data printed on the thermal paper when the time used by the print processing is reached.
Description
Technical Field
The invention relates to the technical field of digital printing, in particular to a method and a device for printing by a thermal printer.
Background
The common micro stylus printer has low speed and large noise, and can not meet the requirements of certain occasions. The micro thermal printer has the advantages of high printing speed, low noise, high reliability, clear writing, small and light head and the like, and can meet the printing requirements of various occasions, thereby being widely applied.
The working principle of the thermal printer is as follows: the light-colored material is covered with a transparent film, the film is heated for a period of time to become dark, and the pattern is generated by heating to produce a chemical reaction in the film. Here, the light-colored material is generally paper, and the transparent film is a heat-sensitive material. The thermal printer determines the corresponding position of the thermal material and heats the corresponding position according to the characters to be printed, so that the corresponding characters are generated on the paper. Wherein the heating is provided by a micro-electric heater in the printhead in contact with the thermally sensitive material. The heaters are typically arranged in a matrix and are logically controlled by a thermal printer. When the heaters in the print head are driven, a pattern corresponding to the heaters is generated on the paper. In addition, the thermal printer also controls the motor to feed paper, thereby realizing printing of the thermal printer.
Thus, the printing process of the thermal printer mainly includes: a matrix conversion process and a data printing process. The character-die conversion processing is used for converting the received characters into dot matrix data and storing the dot matrix data into a storage area. The storage area is provided with a buffer area, and the size of the buffer area can store dot matrix data corresponding to all characters to be printed which can be processed by the thermal printer each time, namely the dot matrix data to be printed is stored in the buffer area. The data printing process includes: and loading dot row data of the dot matrix data to be printed into a register for latching, then carrying out heating treatment according to the latched dot row data, carrying out paper feeding treatment after the heating treatment is carried out for set time, and carrying out printing treatment on the next dot row data after the paper feeding is carried out for set time until all dot row data of the dot matrix data to be printed are printed. The process can be seen in fig. 1, and each printing process of the thermal printer is divided into: character model conversion processing, namely 1 st point data printing processing, and printing the last point data. Wherein, the data printing process of each dot line further comprises: data loading, data latching, heating printing and paper feeding.
It can be seen that the printing process of the current thermal printer is a serial process, and in the heating process, the electronic heater needs to be controlled to heat for a period of time, and in the paper feeding process, the motor needs to be controlled to feed paper for a period of time, so that the actual printing speed of the thermal printer is greatly different from the fastest printing speed supported by the printing head.
Disclosure of Invention
The invention aims to provide a method and a device for printing by a thermal printer, which are used for improving the printing speed of the thermal printer.
The invention provides a method for printing by a thermal printer, which comprises the following steps:
on thermal paper, printing current dot row data latched by dot matrix data to be printed currently in the thermal printer;
in the process of printing the current dot row data, performing data processing, wherein the data processing comprises: loading next dot data and/or performing font conversion processing on the dot matrix data to be printed next;
and displaying the current dot data printed on the thermal paper after the time for the printing processing is reached.
The invention provides a printing device, which is applied to a thermal printer and comprises:
the printing processing unit is used for printing current dot row data latched by current dot matrix data to be printed on the thermal paper;
a data processing unit, configured to perform data processing during printing processing on the current dot line data, where the data processing includes: loading next dot data and/or performing font conversion processing on the dot matrix data to be printed next;
and a display unit for displaying the current dot row data printed on the thermal paper after the time for the printing process is reached.
By adopting the invention, the data processing of the next dot-row data or the dot matrix data to be printed next is carried out in the process of printing the current dot-row data, so that the thermal printer can utilize the time for heating, the time for paper feeding or the two periods of time to load the next dot-row data, or the character matrix conversion processing of the dot matrix data to be printed next, or the data loading and the character matrix conversion processing. Therefore, the printing processing and the data processing are a parallel process, the data processing time is greatly saved, and the printing speed of the thermal printer is improved.
Drawings
FIG. 1 is a schematic diagram of a printing process of a thermal printer according to the prior art;
FIG. 2 is a schematic diagram of a printing process of a thermal printer according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a printing process of a thermal printer according to an embodiment of the present invention;
FIG. 4 is a diagram illustrating a printing process of a thermal printer according to a second embodiment of the present invention;
FIG. 5 is a schematic diagram of a printing process of a thermal printer according to a third embodiment of the present invention;
FIG. 6 is a flow chart of printing by the thermal printer according to a fourth embodiment of the present invention;
fig. 7 is a structural diagram of a printing apparatus in an embodiment of the present invention.
Detailed Description
In the embodiment of the invention, after the thermal printer receives the characters to be printed sent by the upper computer, firstly, the character die conversion is carried out on each received character to be printed, and the character die conversion is converted into the dot matrix data supported by the thermal printer. And then, storing the converted dot matrix data into a buffer area in a storage area of the thermal printer one by one, and after the buffer area is full of the dot matrix data, performing data printing processing on each dot row of data in the dot matrix data in the buffer area. The capacity of one buffer area of the thermal printer is the dot matrix data corresponding to all characters to be printed which can be processed by the thermal printer at one time, namely the buffer area can store the dot matrix data corresponding to one or more characters to be printed. All the dot matrix data in the cache region are the dot matrix data to be printed. And each dot matrix data to be printed comprises one, two or more dot line data.
In the embodiment of the present invention, since the thermal printer requires a period of time for both the heating process and the paper feeding process during the data printing process, the logic control unit of the thermal printer is in an idle state during the period of time, and the first time for heating and the second time for paper feeding are both greater than the time for data processing, the thermal printer may perform the data processing using the first time for heating, the second time for paper feeding, or both of the periods of time. Thus, the time for data processing can be saved, and the printing speed of the thermal printer can be improved. Here, the data processing includes: loading data, and/or performing matrix conversion processing, namely loading next dot row data, and/or performing matrix conversion processing on dot matrix data to be printed next.
In this way, in the embodiment of the present invention, only the next dot data can be loaded in the first time period for the heat treatment or the second time period for the paper feed treatment. Alternatively, only the matrix conversion processing of the dot matrix data to be printed next is performed in the first time for the heat processing or the second time for the paper feed processing. Alternatively, the next dot data is loaded in a first time period for the heating process, and the dot matrix data to be printed next is subjected to the matrix conversion process in a second time period for the paper feeding process. Alternatively, in a first time period for the heating process, a matrix conversion process of dot matrix data to be printed next is performed, and in a second time period for the paper feeding process, a next dot data is loaded. Or, the loading of the dot data to be printed and the character conversion processing of the dot data to be printed are performed in a first time for the heating processing, and the character conversion processing or idling of the dot data to be printed is performed in a second time for the paper feeding processing. Or, in the first time for the heating process, the matrix conversion process or the idle process of the dot matrix data to be printed next is performed, and in the second time for the paper feeding process, the loading of the dot data to be printed next and the matrix conversion process of the dot matrix data to be printed next are performed. Of course, the embodiment of the present invention may also perform data processing according to other setting rules by using the first time and/or the second time, and the specific process is not listed again.
Since data latching is accomplished instantaneously, in the embodiment of the present invention, the time taken for data loading includes the data latching time. Further, in an embodiment of the present invention, the print processing includes: heat treatment, and/or paper feed treatment. Referring to fig. 2, the printing process of the thermal printer includes:
firstly, printing current dot row data latched by dot matrix data to be printed currently in a thermal printer on thermal paper, and in the printing process, performing data processing, namely loading next dot row data and/or performing font conversion processing on the dot matrix data to be printed next, and finally, displaying the current dot row data printed on the thermal paper after the time used by the printing processing is reached.
When the printing process is a heating process, the printing process of the latched current dot line data includes: and triggering the heating timer to enable the heating timer to monitor the corresponding electronic heater for heating, so that the current dot row data can be printed on the thermal paper, and the time monitored by the heating timer is the first time. The heating of the electric heater can generally be monitored through an I/O port of a heating timer. In addition, in the embodiment of the invention, sectional heating can also be adopted. At this time, the total time of the sectional heating is the first time.
Then, after the first time monitored by the heating timer is reached, the printing of the current dot row data needs to be completed, and the current dot row data printed on the thermal paper is displayed, which specifically includes:
when the first time set by the heating timer is reached, the heating is stopped, at the moment, the paper feeding timer is triggered, the paper feeding timer controls the motor to feed the thermal paper, and after the second time monitored by the paper feeding timer is reached, the paper feeding is stopped at the moment, so that the current dot data printed on the thermal paper can be displayed. The movement of the motor can be controlled typically through an I/O port of the paper advance timer.
When the printing process is a paper feed process, or when the printing process includes a heating process and a paper feed process, performing the printing process on the latched current dot line data includes:
triggering the heating timer to enable the heating timer to monitor the corresponding electronic heater for heating, so that current dot row data can be printed on the thermal paper, and the time monitored by the heating timer is the first time; and when the first time monitored by the heating timer is reached, the heating is stopped, and at the moment, the paper feeding timer is triggered to enable the paper feeding timer to monitor the motor to feed the thermosensitive paper feeding.
Then, the paper feeding is stopped after reaching the second time monitored by the paper feeding timer, so that the current dot line data printed on the thermal paper can be displayed.
Thus, data processing can be performed at the first time, the second time, or both.
The embodiments of the present invention will be described in further detail with reference to the drawings attached hereto.
In the first embodiment, the hardware structure of the thermal printer does not need to be modified. The data processing is data loading, namely, the next dot row data is loaded in the process of printing the current dot row data. Referring to fig. 3, the printing process of the thermal printer includes:
and in the printing process, when the current dot row data to be printed in a buffer area of the thermal printer has the next dot row data which is not printed, loading the next dot row data to a data register and latching, and after the time for printing, finishing the printing of the dot row data and displaying the current dot row data printed on the thermal paper.
In the embodiment of the present invention, when the printing process is a heating process, it may be determined whether there is next dot data to be printed in the buffer of the thermal printer in the first time when the heating timer operates, if so, the next dot data is loaded into the data register and latched, then, after the first time set by the heating is reached, the heating is stopped, the paper feeding timer is triggered, and after the second time set by the paper feeding is reached, generally, after one dot row of paper is fed, the paper feeding is stopped, and the current dot data is printed, so that the current dot data printed on the thermal paper may be displayed. Or,
when the printing process is a paper feeding process, whether the current dot matrix data to be printed in the buffer area of the thermal printer has the next dot row data which is not printed in the second time of the working of the paper feeding timer can be judged, if yes, the next dot row data is loaded into the data register and latched, then, after the second time set by the paper feeding is reached, the paper feeding is stopped, the current dot row data is printed completely, and therefore the current dot row data printed on the thermal paper can be displayed. Still alternatively, the first and second substrates may be,
when the printing process is a heating process and a paper feeding process, judging whether dot line data of odd lines has next dot line data which is not printed in a cache region of the thermal printer in a first time of heating timing work, if so, loading the next dot line data into a data register and latching, stopping heating after reaching a first time set by heating, triggering a paper feeding timer, and stopping paper feeding after reaching a second time set by the paper feeding, wherein the current dot line data is printed completely, so that the current dot line data printed on the thermal paper can be displayed. And for dot row data of even rows, judging whether the current dot row data to be printed in the storage area of the thermal printer has the next dot row data which is not printed in the second time of the timed work of paper feeding, if so, loading the next dot row data into a data register and latching, then stopping paper feeding after the second time set by the paper feeding is reached, and displaying the current dot row data printed on the thermal paper after the current dot row data is printed.
Of course, in the embodiment of the present invention, the next data may be loaded during the heating process and/or the paper feeding process according to other set rules, and the specific processes are not illustrated.
The implementation process is a printing process of current dot row data, and in the printing process, whether the current dot row data to be printed in the storage area of the thermal printer has the next dot row data which is not printed is already judged, so that after the printing of the current dot row data is completed and the current dot row data which is printed on the thermal paper is displayed, if the current dot row data to be printed in the cache area of the thermal printer has the next dot row data which is not printed, the latched next dot row data is printed, and thus, the printing of each dot row data of the current dot row data to be printed can be sequentially realized.
When the printing of the current dot row data is finished, after the current dot row data printed on the thermal paper is displayed, if it is determined that the dot matrix data to be printed in the storage area of the thermal printer has no unprinted next dot row data, it is indicated that the printing of the dot matrix data to be printed is finished, and at the moment, the dot matrix data to be printed in the cache area of the thermal printer is deleted. Thus, the thermal printer can perform character-die conversion again, convert the received characters to be printed into dot matrix data and store the dot matrix data into the buffer area of the storage area, and then perform data printing processing on the dot matrix data in the buffer area again after the buffer area is full of the dot matrix data, namely after the dot matrix data to be printed next time is stored in the buffer area.
In the embodiment of the present invention, before performing a first printing process on dot matrix data to be printed, that is, before performing a printing process on first dot line data of the dot matrix data to be printed, the first dot line data must be loaded into a data register to be latched, and the specific process includes:
firstly, judging whether a buffer area in a thermal printer is full of dot matrix data to be printed, if so, acquiring first dot line data of the dot matrix data to be printed from the buffer area, and loading the first dot line data into a data register for latching;
and if the cache area is not full of the dot matrix data to be printed, performing character-pattern conversion on the received characters to be printed, and storing the converted dot matrix data into the cache area until the cache area is full of the dot matrix data to be printed. Therefore, when the cache region is full of the dot matrix data to be printed, the first dot line data of the dot matrix data to be printed can be obtained from the cache region, and the first dot line data is loaded into the data register to be latched.
In the first embodiment, only the first time for heating or the second time for paper feeding is utilized for data loading. Therefore, the time for loading data is saved, and the printing speed of the thermal printer is improved to a certain extent. However, since the time taken for data loading is relatively small, the first time taken for heating and the second time taken for paper feeding are not sufficiently used, and the two times can be used to perform the matrix conversion process, thereby further improving the printing speed of the thermal printer.
In the second embodiment, the data processing is a matrix conversion processing, that is, a matrix conversion processing of the next dot matrix data is performed during the printing processing of the current dot line data. And the storage area of the thermal printer is provided with two or more buffer areas, and each buffer area can store dot matrix data corresponding to all characters to be printed which can be processed by the thermal printer at one time. In this way, when the current dot matrix data to be printed stored in the first buffer area is subjected to printing processing, the time used for printing processing can be utilized to perform character-mode conversion on the newly received character to be printed, and the converted dot matrix data can be stored in the second buffer area. Referring to fig. 4, the printing process of the thermal printer includes:
and in the printing process, when a second buffer area of the thermal printer has a free area and received characters to be printed are not subjected to character-mode conversion, carrying out character-mode conversion on the received characters to be printed, and storing the converted dot matrix data into the second buffer area. That is, the second buffer area stores the next dot matrix of data to be printed, and the next dot matrix of data to be printed includes dot matrix data corresponding to one or more characters to be printed. Thus, when the time for the printing process is reached, the printing of the current dot line data is completed, and the current dot line data printed on the thermal paper is displayed.
It can be seen that, in the embodiment of the present invention, when the printing process is the heating process, it may be determined whether the second buffer area has a free area in the first time of the operation of the heating timer, if so, it may be determined whether a character to be printed is received without performing the font conversion, and if so, the font conversion is performed on the received character to be printed, and the converted dot matrix data is stored in the second buffer area. And then, stopping heating after the first time set by heating is reached, triggering a paper feeding timer, stopping paper feeding after the second time set by paper feeding is reached, and finishing printing the current dot-line data, thereby displaying the current dot-line data printed on the thermal paper. Or,
when the printing process is the paper feeding process, whether a second cache area has a free area or not can be judged in the second time of the working of the paper feeding timer, if so, whether a character to be printed which is not subjected to character matrix conversion is received or not is judged, if so, the character matrix conversion is carried out on the character to be printed, and the converted dot matrix data is stored in the second cache area. Then, after the second time set by the paper feeding is reached, generally, after one dot line of the paper is fed, the paper feeding is stopped, and the current dot line data is printed completely, so that the current dot line data printed on the thermal paper can be displayed. Still alternatively, the first and second substrates may be,
when the printing process is a heating process and a paper feeding process, whether a second cache region has a free region or not can be judged in the first time when the heating timer works, if so, whether a character to be printed which is not subjected to character matrix conversion is received or not is judged, if so, the character to be printed is subjected to character matrix conversion, and the converted dot matrix data is stored in the second cache region. And then, stopping heating after the first time set by heating is reached, triggering a paper feeding timer, judging whether a second cache area has a free area or not within the second time of the paper feeding timing work, if so, judging whether characters to be printed which are not subjected to character-mode conversion are received or not, if so, performing character-mode conversion on the characters to be printed, and storing the converted dot matrix data into the second cache area. And finally, stopping paper feeding after the second time set by the paper feeding is reached, and finishing printing the current dot-line data so as to display the current dot-line data printed on the thermal paper. Still alternatively, the first and second substrates may be,
when the printing processing is heating processing and paper feeding processing, for dot line data of odd lines, in the first time of heating timing work, judging whether a second cache region has a free region, if so, judging whether a character to be printed which is not subjected to character-mode conversion is received, if so, performing character-mode conversion on the character to be printed, and storing converted dot matrix data into the second cache region. And then, stopping heating after the first time set by heating is reached, triggering a paper feeding timer, stopping paper feeding after the second time set by paper feeding is reached, and finishing printing the current dot-line data, thereby displaying the current dot-line data printed on the thermal paper. And for dot line data of even lines, judging whether a second cache area has a free area in the second time of the timed work of paper feeding, if so, judging whether a character to be printed which is not subjected to character mode conversion is received, if so, performing character mode conversion on the character to be printed, and storing the converted dot matrix data into the second cache area. Then, after the second time set by the paper feeding is reached, the paper feeding is stopped, and the printing of the current dot-line data is finished, so that the current dot-line data printed on the thermal paper can be displayed.
Of course, in the embodiment of the present invention, the font conversion may be performed in the heating process and/or the paper feeding process according to other setting rules, and the specific process is not illustrated.
The above implementation process is a current dot row data printing process, so that after the current dot row data is printed and the current dot row data printed on the thermal paper is displayed, it is further required to determine whether the dot matrix data to be printed currently in the first buffer area of the thermal printer has the next dot row data not printed, and then according to the determination result, data loading is performed, specifically including:
when the current dot matrix data to be printed in the first buffer area of the thermal printer has unprinted next dot row data, loading the next dot row data into the data register and latching, and printing the latched next dot row data, thus sequentially realizing the printing of each dot row data in the current dot matrix data to be printed.
When the current dot matrix data to be printed in the buffer area of the thermal printer has no unprinted next dot row data, the current dot matrix data to be printed is indicated to be printed completely, at the moment, the current dot matrix data to be printed in the first buffer area of the thermal printer is deleted, and when the second buffer area is full of the dot matrix data to be printed, namely the dot matrix data to be printed next time is stored in the second buffer area, the dot matrix data to be printed in the second buffer area is printed.
Similarly, in the embodiment of the present invention, before the first dot line data of the dot matrix data to be printed is printed, the first dot line data must be loaded into the data register to be latched, and the specific process includes:
firstly, judging whether a buffer area in the thermal printer is full of dot matrix data to be printed, if so, acquiring first dot line data of the dot matrix data to be printed from the buffer area, and loading the first dot line data into a data register for latching.
And if the cache area is not full of the dot matrix data to be printed, performing character-pattern conversion on the received characters to be printed, and storing the converted dot matrix data into the cache area until the cache area is full of the dot matrix data to be printed. Therefore, when the cache region is full of the dot matrix data to be printed, the first dot line data of the dot matrix data to be printed can be obtained from the cache region, and the first dot line data is loaded into the data register to be latched.
It can be seen that in the embodiment of the present invention, in the process of performing print processing on the current dot matrix data to be printed in the first cache region, the character-pattern conversion is performed, and the converted dot matrix data is stored in the second cache region, if only one or two received characters to be printed have been subjected to the character-pattern conversion in this process, that is, only one dot matrix data corresponding to two characters to be printed is in the second cache region, and the dot matrix data to be printed is not fully stored, then before performing print processing on the first dot line data of the next dot matrix data to be printed, the character-pattern conversion is further performed until the second cache region is fully stored with the dot matrix data to be printed.
If all the characters to be printed which can be processed by the thermal printer at one time are subjected to the matrix conversion processing in the process, namely the second cache area is full of the dot matrix data to be printed, before the first dot line data of the next dot matrix data to be printed is printed, the first dot line data of the dot matrix data to be printed in the second cache area is directly loaded into the register and latched without the matrix conversion processing.
In the embodiment of the present invention, the first buffer area and the second buffer area are opposite, that is, in the process of printing the dot matrix data to be printed in the first buffer area, the dot matrix data subjected to the character-matrix conversion processing is stored in the second buffer area, and in the process of printing the dot matrix data to be printed in the second buffer area, the dot matrix data subjected to the character-matrix conversion processing is stored in the first buffer area.
In the second embodiment, the first time for heating and/or the second time for paper feeding are used for the font conversion processing, so that the time for the data font conversion processing is saved, and the printing speed of the thermal printer is improved to a great extent.
In the third embodiment, the data processing includes: and data loading and character-model conversion processing, namely loading the next dot data and performing character-model conversion processing on the next dot matrix data in the printing processing process of the current dot data. And the storage area of the thermal printer is provided with two or more buffer areas, and each buffer area can store dot matrix data corresponding to all characters to be printed which can be processed by the thermal printer at one time. And the first cache region stores the current dot matrix data to be printed. Referring to fig. 5, the printing process of the thermal printer includes:
on the thermal paper, printing the latched current dot row data of the dot matrix data to be printed currently in the thermal printer, and in the printing process, loading the next dot row data into a data register and latching when the next dot row data which is not printed exists in the dot matrix data to be printed currently in a first cache region of the thermal printer; and when a second buffer area of the thermal printer has a free area and the received character to be printed is not subjected to character-mode conversion, performing character-mode conversion on the received character to be printed and storing the converted dot matrix data into the second buffer area. Thus, when the time for the printing process is reached, the printing of the current dot-line data is completed, and the current dot-line data printed on the thermal paper is displayed.
In the embodiment of the present invention, when the printing process is a heating process, it may be determined whether there is next dot data that is not printed in the first buffer area of the thermal printer in the first time when the heating timer operates, if so, the next dot data is loaded into the data register and latched, and since the time used for loading is much shorter than the first time, it may also be determined whether there is a free area in the second buffer area in the time left by the first time, if so, it is determined whether a character to be printed that is not subjected to the character-to-die conversion is received, and if so, the character-to-die conversion is performed on the received character to be printed, and the converted dot data is stored in the second buffer area. And then, stopping heating after the first time set by heating is reached, triggering a paper feeding timer, stopping paper feeding after the second time set by paper feeding is reached, and finishing printing the current dot-line data, thereby displaying the current dot-line data printed on the thermal paper. Or,
when the printing process is a paper feeding process, judging whether the dot matrix data to be printed currently in the first buffer area of the thermal printer has unprinted next dot data or not in the second time of the working of the paper feeding timer, if so, loading the next dot data into a data register and latching the data, because the time used for loading is far shorter than the second time, whether the second cache area has a free area or not can be judged in the remaining time of the second time, if so, whether the character to be printed which is not subjected to the character matrix conversion is received or not is judged, if so, performing character mode conversion on the received character to be printed, storing the converted dot matrix data into a second buffer area, then, after the second time set by the paper feeding is reached, the paper feeding is stopped, and the printing of the current dot-line data is finished, so that the current dot-line data printed on the thermal paper can be displayed. Or,
when the printing processing is heating processing and paper feeding processing, judging whether the current dot matrix data to be printed in a first cache area of the thermal printer has unprinted next dot data in the first time of heating timing work, if so, loading the next dot data into a data register and latching, stopping heating after reaching the first time set by heating, triggering a paper feeding timer, judging whether a second cache area has a free area in the second time of the paper feeding timing work, if so, judging whether characters to be printed which are not subjected to character-die conversion are received, if so, performing character-die conversion on the characters to be printed, and storing the converted dot matrix data into a second cache area. And finally, stopping paper feeding after the second time set by the paper feeding is reached, and displaying the current dot-line data printed on the thermal paper after the current dot-line data is printed. Still alternatively, the first and second substrates may be,
when the printing processing is heating processing and paper feeding processing, judging whether the current dot matrix data to be printed in a first cache area of the thermal printer has unprinted next dot row data or not in the first time of heating timing work, if so, loading the next dot row data into a data register and latching, judging whether a second cache area has a free area or not in the remaining time of the first time, if so, judging whether characters to be printed which are not subjected to character-die conversion are received or not, if so, carrying out character-die conversion on the received characters to be printed, and storing the converted dot matrix data into a second cache area. And then, stopping heating after the first time set by heating is reached, triggering a paper feeding timer, judging whether a second cache area has a free area or not within the second time of the paper feeding timing work, if so, judging whether characters to be printed which are not subjected to character-mode conversion are received or not, if so, performing character-mode conversion on the characters to be printed, and storing the converted dot matrix data into the second cache area. And finally, stopping paper feeding after the second time set by the paper feeding is reached, and displaying the current dot-line data printed on the thermal paper after the current dot-line data is printed. Still alternatively, the first and second substrates may be,
when the printing processing is heating processing and paper feeding processing, judging whether a second cache area has a free area in the first time of heating timing work, if so, judging whether characters to be printed which are not subjected to character matrix conversion are received, if so, performing character matrix conversion on the received characters to be printed, and storing converted dot matrix data into the second cache area. Then, after the first time set by heating is reached, stopping heating, triggering a paper feeding timer, judging whether the current dot matrix data to be printed in a first cache area of the thermal printer has the next dot matrix data which is not printed in the first cache area of the thermal printer within the second time of the paper feeding timing operation, if so, loading the next dot matrix data into a data register and latching, judging whether a second cache area has a free area within the time left in the second time, if so, judging whether a character to be printed which is not subjected to character-to-character conversion is received, if so, carrying out character-to-character conversion on the character to be printed, storing the converted dot matrix data into the second cache area, and then stopping paper feeding after the second time set by paper feeding is reached, finishing printing the current dot matrix data, thereby displaying the current dot matrix data printed on the thermal printer.
Of course, in the embodiment of the present invention, data loading and font conversion may be performed during the heating process and/or the paper feeding process according to other setting rules, and the specific processes are not illustrated. In addition, in the above embodiments, the data is loaded first and then the data is subjected to the matrix conversion, and in other embodiments, the data may be loaded after the matrix conversion is performed first.
The implementation process is a printing process of current dot-row data, and in the printing process, it has been determined whether the current dot-row data to be printed in the storage area of the thermal printer has the next dot-row data that is not printed, so that after the printing of the current dot-row data is completed and the current dot-row data that has been printed on the thermal paper is displayed, if it is determined that the current dot-row data to be printed in the first buffer area of the thermal printer has the next dot-row data that is not printed, the next dot-row data is loaded, and at this time, only the latched next dot-row data needs to be printed.
When the printing of the current dot-line data is finished, after the current dot-line data printed on the thermal paper is displayed, if it is determined that the current dot-line data to be printed in the first cache area of the thermal printer does not have the next dot-line data not printed, that is, the dot-line data to be printed is completely loaded, and the dot-line data to be printed is printed, at this time, the dot-line data to be printed in the first cache area of the thermal printer is deleted, and when the second cache area is full of the dot-line data to be printed, that is, the dot-line data to be printed in the second cache area is stored, the dot-line data to be printed in the second cache area is printed.
Similarly, in the embodiment of the present invention, before the first dot line data of the dot matrix data to be printed is printed, the first dot line data must be loaded into the data register to be latched, and the specific process includes:
firstly, judging whether a buffer area in the thermal printer is full of dot matrix data to be printed, if so, acquiring first dot line data of the dot matrix data to be printed from the buffer area, and loading the first dot line data into a data register for latching.
If the cache region is not full of the dot matrix data to be printed, character-pattern conversion is carried out on the received characters to be printed, the converted dot matrix data is stored in the cache region until the cache region is full of the dot matrix data to be printed, and therefore when the cache region is full of the dot matrix data to be printed, the first dot line data of the dot matrix data to be printed can be obtained from the cache region, and the first dot line data is loaded into the data register to be latched.
It can be seen that in the embodiment of the present invention, in the process of performing print processing on the current dot matrix data to be printed in the first cache region, the character-pattern conversion is performed, and the converted dot matrix data is stored in the second cache region, if only one or two received characters to be printed have been subjected to the character-pattern conversion in this process, that is, only one dot matrix data corresponding to two characters to be printed is in the second cache region, and the dot matrix data to be printed is not fully stored, then before performing print processing on the first dot line data of the next dot matrix data to be printed, the character-pattern conversion is further performed until the second cache region is fully stored with the dot matrix data to be printed.
If all the characters to be printed which can be processed by the thermal printer at one time are subjected to the matrix conversion processing in the process, namely the second cache area is full of the dot matrix data to be printed, before the first dot line data of the next dot matrix data to be printed is subjected to the printing processing, the first dot line data of the dot matrix data to be printed in the second cache area is directly loaded into the register and latched without the matrix conversion processing.
In the embodiment of the present invention, the first buffer area and the second buffer area are opposite, that is, in the process of printing the dot matrix data to be printed stored in the first buffer area, the dot matrix data subjected to the character-matrix conversion processing is stored in the second buffer area, and in the process of printing the dot matrix data to be printed stored in the second buffer area, the dot matrix data subjected to the character-matrix conversion processing is stored in the first buffer area.
In the third embodiment, the first time for heating and the second time for paper feeding are fully utilized, so that not only the time for loading data is saved, but also the time for converting the data matrix is saved, and the printing speed of the thermal printer is greatly improved.
The following description will be made in detail by taking a known type of thermal printer as an example of a printing process.
Fourth embodiment, in this embodiment, the thermal printer is an FTP-628 series, the print head dot structure of the thermal printer is 384 dots/line, the horizontal dot density is 8 dots/mm, and the dot matrix data supported by the thermal printer is 24 × 24 dot matrix data. The storage area of the thermal printer has two buffer areas. Each buffer may store 24 x 48BYTE of lattice data. That is, each buffer can store dot matrix data corresponding to 16 characters to be printed. And the time taken for the thermal printer to heat and the time taken for the paper to feed are both in milliseconds (ms) and the speed of data loading is 2M, i.e. the time taken for data loading is 0.5 × 384 ═ 193 us. It can be seen that once the signal of the thermal printer is determined, the first time taken for heating and the second time taken for paper feeding are acquired, and the time taken for data loading is much shorter than the first time taken for heating and the second time taken for paper feeding.
Referring to fig. 6, after the thermal printer is turned on, the printing process of the thermal printer includes:
step 601: and carrying out character-mode conversion processing on the received character to be printed, and storing the character into a first cache region.
The characters to be printed sent by the upper computer can be characters in various formats, such as: the characters in GB2312 format, or the characters in Times New Roman format, and the dot matrix data supported by the thermal printer in this embodiment is 24 × 24 dot matrix data. Therefore, the thermal printer determines the received dot matrix data corresponding to the character to be printed according to the stored corresponding relationship between the character and the dot matrix data, and stores the determined dot matrix data in the first buffer area.
Step 602: is the first buffer full of dot matrix data determined? If yes, go to step 603, otherwise, go back to step 601 until the first buffer area is full of dot matrix data.
Step 603: and loading the first dot row data of the dot matrix data to be printed in the first cache region as current dot row data into a data register, and latching.
Step 604: and triggering a heating timer according to the latched current line data to perform heating treatment. The set time of the timer is a first time.
Step 605: is it determined whether there is the next dot row data to be printed in the first buffer area that is not printed? If yes, go to step 606, otherwise go to step 617.
Step 606: the next dot row data is loaded into the data register and latched, and step 607 is performed.
Step 607: is there free space in the second buffer? If so, go to step 608, otherwise, go to step 610.
Step 608: determine whether a character to be printed is received? If yes, go to step 609, otherwise, go to step 610.
Step 609: and carrying out character-mode conversion processing on the received character to be printed, and storing the character into a second cache region.
Step 610: and stopping heating when the first time set by the heating timer is reached.
Step 611: and triggering a paper feeding timer to perform paper feeding processing, wherein the set time of the timer is a second time.
Step 612: is there free space in the second buffer? If yes, go to step 613, otherwise, go to step 615.
Step 613: determine whether a character to be printed is received? If yes, go to step 614, otherwise, go to step 615.
Step 614: and carrying out character-mode conversion processing on the received character to be printed, and storing the character into a second cache region.
Step 615: and stopping paper feeding when the second time set by the paper feeding timer is reached.
Step 616: the latched next dot data is set as the current dot data, and the process returns to step 604.
Step 617: and stopping heating when the first set time set by the heating timer is reached.
Step 618: and triggering a paper feeding timer to perform paper feeding processing.
Step 619: and stopping paper feeding when the second set time set by the paper feeding timer is reached.
Step 620: and deleting the dot matrix data to be printed in the first cache region, taking the second cache region as the first cache region and the first cache region as the second cache region, and returning to the step 602.
According to the above process, the thermal printer can print the received characters, that is, the received characters can be printed after the thermal printer is started, and if the characters are not received, the thermal printer is in a standby state.
Since the heating process of the series of thermal printers may be stepwise heating, the data loading process and the matrix conversion process may be interleaved with the heating process. For example: in the above embodiment, if the heating timer is triggered to perform the first heating period in step 604, and the heating time is T1, step 605 may be executed, and when it is determined that the dot matrix data to be printed in the first buffer has the next dot row data that is not printed, step 606 is not executed immediately. Instead, T1 is reached, at which point the heating timer is triggered again for the second heating period, T2, and then step 606 is executed. Similarly, after the execution of 606, the time T2 is reached, at this time, the heating timer is triggered again to perform the third heating, the heating time is T3, and then the step 607 is executed. And the analogy is that the loading process and the matrix conversion process are alternated in the heating process.
In the fourth embodiment, the data loading and the matrix conversion processing are performed in the first time period for heating, the matrix conversion processing is performed in the second time period for paper feeding, and when the last dot row data printing processing is performed, the data processing is not performed, and since the 24 × 48BYTE dot matrix data, that is, the 24 dot row data needs to be printed, is stored in the buffer, the matrix conversion of at most 46 characters can be performed, which is larger than the storage space of the buffer, and therefore, by the method of the fourth embodiment, the time period for data loading can be saved, the time period for data matrix conversion processing can be completely saved, and the printing speed of the thermal printer can be greatly improved.
Of course, for some types of thermal printers, the capacity of the buffer may be large, so that the time for printing the dot matrix data to be printed is not enough to perform the matrix conversion processing on all the dot matrix data that can be accommodated in the buffer, and thus, after the dot matrix data to be printed is printed, the dot matrix data to be printed cannot be directly printed, and the matrix conversion processing on part of the characters is performed until the buffer can be full of the dot matrix data. Therefore, the time for data processing is saved, and the printing speed of the thermal printer is improved.
According to the above printing method, a printing apparatus can be constructed, which can be in a thermal printer, see fig. 7, the apparatus comprising: a print processing unit 100, a data processing unit 200, and a display unit 300. Wherein,
and a printing processing unit 100, configured to perform printing processing on current dot row data latched by dot matrix data to be currently printed on thermal paper.
A data processing unit 200, configured to perform data processing during printing processing on the current dot line data, where the data processing includes: and loading next dot data and/or performing matrix conversion processing on the dot matrix data to be printed next.
A display unit 300 for displaying the current dot data printed on the thermal paper after the time taken for the printing process is reached.
In an embodiment of the present invention, the print processing unit 100 is further configured to trigger a heating timer, so that the heating timer monitors the corresponding electronic heater to heat, and print the current dot data on the thermal paper, where the time monitored by the heating timer is a first time.
Then, the display unit 300 is further configured to trigger a paper feeding timer, enable the paper feeding timer to monitor that the motor moves the thermal paper, and display the current dot data printed on the thermal paper after a second time monitored by the paper feeding timer is reached.
In another embodiment of the present invention, the print processing unit 100 is further configured to trigger a heating timer, so that the heating timer monitors a corresponding electronic heater to heat, and print the current dot data on the thermal paper, where the time monitored by the heating timer is a first time, and when the first time set by the heating timer is reached, trigger a paper feeding timer, so that the paper feeding timer monitors the motor to feed the thermal paper, and the time monitored by the paper feeding timer is a second time.
Then, the display unit 300 is further configured to display the current dot data printed on the thermal paper after the second time monitored by the paper feeding timer is reached.
In the above two embodiments, the data processing unit 200 is further configured to, in the first time or the second time, load and latch the next dot data into the data register when there is the next dot data that is not printed in the buffer of the thermal printer.
Here, the apparatus further includes a first deleting unit configured to delete the dot matrix data to be printed in the buffer of the thermal printer when the dot matrix data to be currently printed in the buffer does not have the next dot row data not printed.
Or, when the thermal printer comprises at least two buffer areas, and the current dot matrix data to be printed is stored in the first buffer area; then the process of the first step is carried out,
the data processing unit 200 is further configured to perform, in the first time and/or the second time, when a second buffer has a free area and a received character to be printed is not subjected to font conversion, font conversion on the received character to be printed, and store the converted dot matrix data in the second buffer.
Here, the apparatus further includes: the loading unit is used for loading and latching the next dot row data into the data register when the current dot matrix data to be printed in the first cache region has the unprinted next dot row data; and the second deleting unit is used for deleting the current dot matrix data to be printed in the first cache region when the current dot matrix data to be printed in the first cache region has no unprinted next dot row data.
Or the thermal printer comprises at least two buffer areas, and the dot matrix data to be printed is stored in the first buffer area; then the process of the first step is carried out,
the data processing unit is further configured to load and latch next dot data into the data register when the current dot matrix data to be printed has unprinted next dot data in the first buffer area within the first time or the second time, and perform the character-to-character conversion on the received character to be printed and store the converted dot matrix data in the second buffer area when the second buffer area has a free area and the received character to be printed does not perform the character-to-character conversion within the first time and/or the second time.
Here, the apparatus further includes a third deleting unit configured to delete the dot matrix data to be currently printed in the first buffer of the thermal printer when the dot matrix data to be currently printed in the buffer of the thermal printer has no unprinted next dot data.
Of course, in the embodiment of the present invention, the apparatus further includes:
and the first line loading unit is used for acquiring the first dot line data of the dot matrix data to be printed from the cache region when the fact that the cache region in the thermal printer is full of the dot matrix data to be printed is determined, and loading the first dot line data into the data register for latching.
And the character die conversion unit is used for carrying out character die conversion on the received character to be printed when the thermal printer is determined not to be full of the dot matrix data to be printed in the buffer area, and storing the converted dot matrix data into the buffer area until the buffer area is full of the dot matrix data to be printed.
In the embodiment of the invention, in the process of printing the current dot-line data, the data processing of the next dot-line data or the dot-matrix data to be printed next is carried out, so that the thermal printer can load the next dot-line data, or the character-matrix conversion processing of the dot-matrix data to be printed next, or the data loading and the character-matrix conversion processing by utilizing the heating time, the paper feeding time or the two periods. Therefore, the printing processing and the data processing are a parallel process, the data processing time is greatly saved, and the printing speed of the thermal printer is improved.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (6)
1. A method of printing with a thermal printer, the method comprising:
on thermal paper, printing current dot row data latched by dot matrix data to be printed currently in the thermal printer;
in the process of printing the current dot row data, performing data processing, wherein the data processing comprises: loading next dot data and/or performing font conversion processing on the dot matrix data to be printed next;
and displaying the current dot data printed on the thermal paper after the time for the printing processing is reached.
2. The method according to claim 1, wherein when the printing process is a heating process, the performing of the printing process on the latched current dot line data includes:
triggering a heating timer to enable the heating timer to monitor a corresponding electronic heater for heating, and printing the current dot row data on the thermal paper, wherein the time monitored by the heating timer is a first time;
displaying the current dot data printed on the thermal paper after the first time monitored by the heating timer is reached comprises:
and triggering a paper feeding timer to enable the paper feeding timer monitoring motor to feed the thermal paper, and displaying the current dot data printed on the thermal paper after the second time monitored by the paper feeding timer is reached.
3. The method according to claim 1, wherein when the printing process is a paper-feeding process, or the printing process includes a heating process and a paper-feeding process, the performing of the printing process on the latched current dot line data includes:
triggering a heating timer to enable the heating timer to monitor a corresponding electronic heater for heating, and printing the current dot row data on the thermal paper, wherein the time monitored by the heating timer is a first time;
triggering a paper feeding timer after the first time set by the heating timer is reached, so that the paper feeding timer monitors the motor to feed the thermal paper, wherein the time monitored by the paper feeding timer is a second time;
then, after reaching the second time monitored by the paper feeding timer, displaying the current dot row data printed on the thermal paper.
4. The method according to claim 2 or 3, wherein, in performing the printing process on the current dot line data, performing the data process includes:
and in the first time or the second time, when the current dot matrix data to be printed in the buffer area of the thermal printer has unprinted next dot row data, loading the next dot row data into a data register and latching the next dot row data.
5. The method of claim 4, wherein after displaying the current dot data printed on thermal paper, further comprising:
when the current dot matrix data to be printed in the buffer area of the thermal printer has unprinted next dot row data, printing the latched next dot row data;
and when the current dot matrix data to be printed in the buffer area of the thermal printer does not have the next dot row data which is not printed, deleting the current dot matrix data to be printed in the buffer area of the thermal printer.
6. The method as claimed in claim 2 or 3, wherein when the thermal printer has at least two buffers and the current dot matrix data to be printed is stored in the first buffer, the performing data processing during the printing processing of the current dot row data comprises:
and in the first time and/or the second time, when a second buffer area of the thermal printer has a free area and received characters to be printed are not subjected to character-mode conversion, carrying out character-mode conversion on the received characters to be printed, and storing converted dot matrix data into the second buffer area.
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Application publication date: 20120530 |