CN104191824A - Thermal printer and method for controlling same - Google Patents
Thermal printer and method for controlling same Download PDFInfo
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- CN104191824A CN104191824A CN201410480722.1A CN201410480722A CN104191824A CN 104191824 A CN104191824 A CN 104191824A CN 201410480722 A CN201410480722 A CN 201410480722A CN 104191824 A CN104191824 A CN 104191824A
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Abstract
The invention discloses a thermal printer and a method for controlling the same. By the aid of the thermal printer and the method, the technical problem of incapability of increasing the printing speed of a thermal printer in the prior art can be solved. The method includes steps of driving a motor of the thermal printer to feed paper; heating a printing head of the thermal printer to print current data; transmitting to-be-printed data to the printing head. The steps are parallelly executed. The thermal printer and the method have the technical advantages that two cache regions are arranged in a memory of the printing head, so that the three steps of 'printer paper feeding', 'printing head heating' and 'to-be-printed data receiving' can be parallelly executed by the thermal printer, time elapsed in each data printing procedure can be obviously shortened, and the printing speed of the thermal printer can be increased.
Description
Technical field
The present invention relates to field of printer control technology, relate in particular to a kind of control method and thermal printer of thermal printer.
Background technology
Thermal printer, due to advantages such as volume are little, noise is low, speed is fast, is widely used in industry-by-industry.Although its high energy is supported the print speed of 200mm/S, people require the print speed of thermal printer or are promoting.
What the most general thermal printer was used is the fixing printing head with dot matrix, and semiconductor heating element heater is installed on printhead, and printhead heat and contacts the pattern that just can print needs after thermal printing paper.Thermal printer, after receiving print data, converts print data to data bitmap, then according to the semiconductor heating element on the point control printhead of data bitmap, passes through electric current, like this print data is become to the print What on thermal printing paper.When every printing a line bitmap dot array data, it be need to control and " receiving current print data ", " printer paper-feeding ", " printhead heating " these three steps carried out successively, it is printer paper-feeding after the current dot array data to be printed of printhead reception, after paper feed completes, printhead starts heating, completes thus the printing of a line dot array data.Concrete, dot array data is a line and comprises 0 and 1 binary data, the some place of printing at needs, and its data correspond to 1, and the data of blank space correspond to 0; During heating, the some place that data are 1, controls this some place semiconductor heating element by electric current, and the some place that data are 0, controls the obstructed overcurrent of semiconductor heating element at this some place; Like this mode, realizes the hot print that adds of a line dot array data.
In the above-mentioned mode that adds hot print, serial carry out " receiving current print data ", " printer paper-feeding ", " printhead heating " these three steps take total time and are
if want, improve print speed, the time that needs arbitrary step in above-mentioned three steps of corresponding shortening or used in steps, but anyway shorten the time that three steps are used, the requirement of subject printer performance, for guaranteeing printing effect, there is the restriction of minimum time the time that each step is used, therefore, total time
after shortening to a certain degree, be difficult to shorten again, print speed is restricted thus and cannot continues to improve.
Summary of the invention
A kind of thermal printer control method and the thermal printer that the object of this invention is to provide, to solve the technical problem that cannot promote the print speed of thermal printer in prior art.
The object of the invention is to be achieved through the following technical solutions:
A kind of thermal printer control method is provided, and described method comprises executed in parallel following steps: the motor paper feed that drives described thermal printer; Heat the printhead prints current data of described thermal printer; To described printhead, send data to be printed.
Further, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that is the arrangement of row dot matrix; Described printhead comprises the first data buffer area, and described current data comprises the current row dot array data that will print; The printhead prints current data of the described thermal printer of described heating, comprising:
According to the current row dot array data that will print of storing in described the first data buffer area, control the operation of described heater.
Further, described printhead also comprises the second data buffer area, and described data to be printed comprise row dot array data to be printed; Describedly to described printhead, send data to be printed, comprising: to described the second data buffer area, write row dot array data to be printed.
Further, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that rectangular dot matrix is arranged; Described printhead comprises the first data buffer area, and described current data comprises the current rectangular lattice data that will print; The printhead prints current data of the described thermal printer of described heating, comprising: according to the N storing in described the first data buffer area, walk to the rectangular lattice data that will print before the N+M trade, control the operation of described rectangular lattice heater; Wherein, described N and M are positive integer.
Further, described printhead also comprises the second data buffer area, and described data to be printed comprise rectangular lattice data to be printed; Describedly to described printhead, send data to be printed, comprising: to described the second data buffer area, write N+M+1 and walk to the capable rectangular lattice data to be printed of N+2M.
A kind of thermal printer is provided, has comprised motor, printhead, memory and controller; Wherein, described motor is used for driving described thermal printer paper feed, described printhead is used for printing current data, described memory is used for storing current data and data to be printed, when described controller is used for being controlled at described motor and printhead work, to described memory, write data to be printed.
Further, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that is the arrangement of row dot matrix; Described memory comprises the first data buffer area that is arranged at printhead place, the current row dot array data that will print of storage in described the first data buffer area.
Further, described memory also comprises the second buffer area that is arranged at printhead place, and row dot array data to be printed is stored in described the second data buffer area.
Further, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that rectangular dot matrix is arranged; Described memory comprises the first data buffer area that is arranged at printhead place, and in described the first data buffer area, storage N walks to the rectangular lattice data that will print before the N+M trade; Wherein, described N and M are positive integer.
Further, described memory also comprises the second buffer area that is arranged at printhead place, and described the second data buffer area is stored N+M+1 and walked to the capable rectangular lattice data to be printed of N+2M.
Thermal printer control method provided by the invention and thermal printer, limit is walked trimming heating and is printed current data, meanwhile, printhead receives data to be printed, realizes thus " printer paper-feeding ", " printhead heating " and " receiving data to be printed " three step executed in parallel.Adopt the method, make to print the time that secondary data total time used is that step of used time maximum in three steps, compare " receiving current print data ", total time used is carried out in " printer paper-feeding " and " printhead heating " three step serials, obviously shortened and printed the time that a secondary data is used, and then improved the print speed of thermal printer.
Accompanying drawing explanation
Fig. 1 is the sequential chart that prior art is controlled thermal printer;
Fig. 2 is the flow chart of an embodiment of thermal printer control method provided by the invention;
Fig. 3 is the sequential chart of an embodiment of thermal printer control method provided by the invention;
Fig. 4 is the installation drawing of an embodiment of thermal printer provided by the invention.
The specific embodiment
The object of this invention is to provide a kind of thermal printer control method and thermal printer, to solve the technical problem that cannot promote the print speed of thermal printer in prior art; Adopt limit to walk trimming heating and print, printhead receives the means of data to be printed simultaneously, has realized the technique effect that improves thermal-sensitive printer printing speed.
Below in conjunction with accompanying drawing, the technical scheme that the embodiment of the present invention is provided is described in detail.
As shown in Figure 1, be the control sequential chart of thermal printer in prior art.In prior art, the control model of thermal printer is following three steps that serial is carried out: 1, the printhead to thermal printer sends the current data that will print; 2, drive the motor paper feed of thermal printer; 3, heating printhead prints current data; More than can be understood as single-stage Pipeline control.The heating means of above-mentioned employing are for stopping heating, and printhead heating and motor paper feed separately carry out, and after paper feed, then add thermal printer head the current print data of wanting is added to hot print.Although such control is simple, print total time that a secondary data uses as shown in Figure 1, for
.
Take that to control a 80mm high speed thermal printer be example, the performance parameter of this thermal-sensitive printer printing head is as shown in the table:
According to the performance parameter of this printhead, if adopt the thermal printer control mode of prior art, complete the time that the printing of a secondary data used and be:
, its print speed is
.
Visible, in existing control mode, there is very big-difference in the maximum printable speed 170mm/s that actual print speed and its performance can have been given play to.Be subject to the requirement of temperature-sensitive printer capability, for guaranteeing printing effect, there is the restriction of minimum time the time that each step is used, if want, improve print speed, in assurance, obtain under the current data time that will print and printhead heat time prerequisite, the paper feed time that can shorten motor shortens the total time of printing a secondary data, but shortens the technical problems such as the paper feed time of motor can bring the increase of thermal printer noise, and paper feed moment is inadequate; Therefore, anyway shorten the time that three steps are used,
after shortening to a certain degree, be difficult to shorten again, print speed is restricted thus and cannot continues to improve.
Thermal printer control method provided by the invention as shown in Figure 2, is following three steps of executed in parallel:
Step S01: the motor paper feed that drives described thermal printer;
Step S02: the printhead prints current data that heats described thermal printer;
Step S03: send data to be printed to described printhead.
Whether the step that then can judge these three executed in parallel is all finished, if be all finished, above-mentioned data to be printed become current data, continues above-mentioned three steps of executed in parallel.
Three steps of above-mentioned executed in parallel, may also be referred to as three class pipeline method, refer at one time in section, to send data to be printed to printhead, motor paper feed and three steps while executed in parallel of heating printhead prints current data of driving thermal printer, heat printhead prints current data that is in the motor paper feed that drives thermal printer, to printhead, send data to be printed, for adding hot print data to be printed, carry out in advance data preparation simultaneously.
With reference to the printing head performance parameter in upper table, control method provided by the invention, with reference to figure 3, the total time that printing a secondary data needs is
, i.e. the time of implementation of a longest step consuming time in three steps, its corresponding print speed is
.
With comparing total time in the control mode of prior art, the thermal printer control method that the present invention adopts, high energy supports that print speed is 235mm/s, has surpassed the maximum printable speed that the performance parameter of printhead limits; Through more visible, method provided by the invention can be given full play of the maximum printing performance of printing head, has significantly improved the print speed of thermal printer.
In control method provided by the invention, drive motors paper feed and printhead add hot print current data to carry out simultaneously, can be referred to as the heating of rolling, this rolling heating lies among three class pipeline method, refer in drive motors paper feed current data is added to hot print, it has saved and has added separately the time that hot print current data is used, and the method is owing to being heating in a kind of motion, makes the font stroke that prints more clear and even.
What the most general thermal printer was used is the printhead that is dot matrix, and semiconductor heating element heater is installed on printhead, semiconductor heating element heater is passed to electric current and make printhead heating, after the printhead contact thermal printing paper of heating, just can print the pattern needing.
Thermal printer is after receiving print data, convert print data to data bitmap, then each of data bitmap is mapped with the printhead that is dot matrix, when printing, semiconductor heating element heater corresponding to point that needs are printed passes to electric current and contacts thermal printing paper and complete data-printing one time.
In thermal printer control method provided by the invention, the printhead of thermal printer includes heater, and described heater comprises the heating element heater that is the arrangement of row dot matrix; Described printhead comprises the first data buffer area, and the current data that will print is the current row dot array data that will print; Described printhead also comprises the second data buffer area, and described data to be printed comprise row dot array data to be printed; The printhead prints current data that heats described thermal printer is actual is: according to the current row dot array data that will print of storing in described the first data buffer area, control the operation of described heater; To described printhead, send that data to be printed are actual is: to described the second data buffer area, write row dot array data to be printed.
; according to the current row dot array data that will print of storing in the first data buffer area; N capable (N is positive integer) for example; which heating element heater judgement need to heat; for example, corresponding data bitmap 1 need to heat corresponding heating element heater, and data bitmap 0 does not need to heat corresponding heating element heater; and control heating element heater corresponding to heating, after contacting with thermal printing paper, printhead prints the capable dot array data of N; Printing the capable dot array data of the current N that will print simultaneously, in the second data buffer area, write the capable dot array data of N+1 to be printed, after the capable dot array data of complete current N to be printed, in the second data buffer area, the capable dot array data of N+1 of storage becomes the current row dot array data that will print, printhead can be and then according to the row dot array data in the second data buffer area, which heating element heater judgement need to heat and print row dot array data corresponding in the second data buffer area, meanwhile, in the first data buffer area, write the capable dot array data of N+2.
While using a buffer area, after current line dot array data can only having been printed, then write next line dot array data to be printed to buffer area, after having write, print again; This process that writes printing again certainly will increase the time of printhead prints data, and adopt the mode of this two data buffer area, can realize printing current line dot array data and be ready to row dot array data to be printed simultaneously, make the printhead can continuous continual print data, save the time that writes data to be printed, can obviously improve print speed.
Also have a kind of embodiment to be, in thermal printer control method provided by the invention, the printhead of thermal printer includes heater, and described heater comprises the heating element heater that rectangular dot matrix is arranged; Described printhead comprises the first data buffer area, and the current data that will print is the current rectangular lattice data that will print; Described printhead also comprises the second data buffer area, and described data to be printed comprise rectangular lattice data to be printed; The printhead prints current data that heats described thermal printer is actual is: according to the N storing in described the first data buffer area, walk to the rectangular lattice data that will print before the N+M trade, control the operation of described heater; Wherein, described N and M are positive integer; To described printhead, send that data to be printed are actual is: to described the second data buffer area, write N+M+1 and walk to the capable rectangular lattice data to be printed of N+2M.
, according to the current rectangular lattice data that will print of storing in the first data buffer area, for example to walk to N+M capable for N, which heating element heater judgement need to heat, at the current N that will print of printing, walk to the capable rectangular lattice data of N+M simultaneously, to writing N+M+1 to be printed in the second data buffer area, walk to the capable rectangular lattice data of N+2M, after complete current rectangle dot array data to be printed, in the second data buffer area, the rectangular lattice data of storage become the current row dot array data that will print, printhead can be and then according to the rectangular lattice data in the second data buffer area, which heating element heater judgement need to heat and print rectangular lattice data corresponding in the second data buffer area, meanwhile, to writing N+2M+1 in the first data buffer area, walk to the capable rectangular lattice data of N+3M.
With above-mentioned, while using a buffer area, after current rectangle dot array data can only having been printed, then write next piece rectangular lattice data to be printed to buffer area, after having write, print again; This process that writes printing again certainly will increase the time of printhead prints data, and adopt the mode of this two data buffer area, can realize printing current rectangle dot array data and be ready to rectangular lattice data to be printed simultaneously, make the printhead can continuous continual print data, save the time that writes data to be printed, can obviously improve print speed.
The invention allows for a kind of thermal printer, as shown in Figure 4, comprise motor 1, printhead 2, memory 3 and controller 4; Wherein, described motor is used for driving described thermal printer paper feed, described printhead is used for printing current data, described memory is used for storing current data and data to be printed, when described controller is used for being controlled at described motor and printhead work, to described memory, write data to be printed.
Printhead comprises heater 21, and described heater comprises the heating element heater that is the arrangement of row dot matrix; Described memory comprises the first data buffer area 31 and the second data buffer area 32 that is arranged at printhead place, the current row dot array data that will print of storage in described the first data buffer area, and row dot array data to be printed is stored in described the second data buffer area.
Described heater 21 can also be the heating element heater that comprises that rectangular dot matrix is arranged; Described memory comprises the first data buffer area 31 and the second data buffer area 32 that is arranged at printhead place, in described the first data buffer area, storage N walks to the rectangular lattice data that will print before the N+M trade, and described the second data buffer area is stored N+M+1 and walked to the capable rectangular lattice data to be printed of N+2M; Wherein, described N and M are positive integer.
The control course of work of thermal printer describes in detail in above-mentioned thermal printer control method, and it will not go into details herein.
Thermal printer control method provided by the invention and thermal printer, the memory of printhead has comprised the first data buffer area and the second data buffer area, be respectively used to store current print data and data to be printed, this makes printhead can realize continuous print data, saved and printed the time that the backward memory of current data writes data to be printed, can obviously improve print speed; And, setting based on two buffer areas, make the controller of thermal printer can control printer executed in parallel " printer paper-feeding ", " printhead heating " and " receiving data to be printed " three steps, make the time-write interval be converted to the time of carrying out three steps that step of used time maximum the time from carrying out the summation of three step times, obviously shortened and printed the time that a secondary data is used, and then improved the print speed of thermal printer.
The present invention is with reference to describing according to flow chart and/or the block diagram of the method for the embodiment of the present invention, equipment (system) and computer program.Should understand can be in computer program instructions realization flow figure and/or block diagram each flow process and/or the flow process in square frame and flow chart and/or block diagram and/or the combination of square frame.Can provide these computer program instructions to the processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing device to produce a machine, the instruction of carrying out by the processor of computer or other programmable data processing device is produced for realizing the device in the function of flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame appointments.
These computer program instructions also can be stored in energy vectoring computer or the computer-readable memory of other programmable data processing device with ad hoc fashion work, the instruction that makes to be stored in this computer-readable memory produces the manufacture that comprises command device, and this command device is realized the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame.
These computer program instructions also can be loaded in computer or other programmable data processing device, make to carry out sequence of operations step to produce computer implemented processing on computer or other programmable devices, thereby the instruction of carrying out is provided for realizing the step of the function of appointment in flow process of flow chart or a plurality of flow process and/or square frame of block diagram or a plurality of square frame on computer or other programmable devices.
Although described the preferred embodiments of the present invention, once those skilled in the art obtain the basic creative concept of cicada, can make other change and modification to these embodiment.So claims are intended to all changes and the modification that are interpreted as comprising preferred embodiment and fall into the scope of the invention.
Obviously, those skilled in the art can carry out various changes and modification and not depart from the spirit and scope of the present invention the present invention.Like this, if within of the present invention these are revised and modification belongs to the scope of the claims in the present invention and equivalent technologies thereof, the present invention is also intended to comprise these changes and modification interior.
Claims (10)
1. thermal printer control method, is characterized in that, described method comprises executed in parallel following steps:
Drive the motor paper feed of described thermal printer;
Heat the printhead prints current data of described thermal printer;
To described printhead, send data to be printed.
2. thermal printer control method according to claim 1, is characterized in that, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that is the arrangement of row dot matrix; Described printhead comprises the first data buffer area, and described current data comprises the current row dot array data that will print; The printhead prints current data of the described thermal printer of described heating, comprising:
According to the current row dot array data that will print of storing in described the first data buffer area, control the operation of described heater.
3. thermal printer control method according to claim 2, is characterized in that, described printhead also comprises the second data buffer area, and described data to be printed comprise row dot array data to be printed; Describedly to described printhead, send data to be printed, comprising:
To described the second data buffer area, write row dot array data to be printed.
4. thermal printer control method according to claim 1, is characterized in that, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that rectangular dot matrix is arranged; Described printhead comprises the first data buffer area, and described current data comprises the current rectangular lattice data that will print; The printhead prints current data of the described thermal printer of described heating, comprising:
According to the N storing in described the first data buffer area, walk to the rectangular lattice data that will print before the N+M trade, control the operation of described rectangular lattice heater; Wherein, described N and M are positive integer.
5. thermal printer control method according to claim 4, is characterized in that, described printhead also comprises the second data buffer area, and described data to be printed comprise rectangular lattice data to be printed; Describedly to described printhead, send data to be printed, comprising:
To described the second data buffer area, write N+M+1 and walk to the capable rectangular lattice data to be printed of N+2M.
6. a thermal printer, is characterized in that, comprises motor, printhead, memory and controller;
Wherein, described motor is used for driving described thermal printer paper feed, described printhead is used for printing current data, described memory is used for storing current data and data to be printed, when described controller is used for being controlled at described motor and printhead work, to described memory, write data to be printed.
7. thermal printer according to claim 6, is characterized in that, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that is the arrangement of row dot matrix; Described memory comprises the first data buffer area that is arranged at printhead place, the current row dot array data that will print of storage in described the first data buffer area.
8. thermal printer according to claim 7, is characterized in that, described memory also comprises the second data buffer area that is arranged at printhead place, and row dot array data to be printed is stored in described the second data buffer area.
9. thermal printer according to claim 6, is characterized in that, the printhead of described thermal printer comprises heater, and described heater comprises the heating element heater that rectangular dot matrix is arranged; Described memory comprises the first data buffer area that is arranged at printhead place, and in described the first data buffer area, storage N walks to the rectangular lattice data that will print before the N+M trade; Wherein, described N and M are positive integer.
10. thermal printer according to claim 9, is characterized in that, described memory also comprises the second buffer area that is arranged at printhead place, and described the second data buffer area is stored N+M+1 and walked to the capable rectangular lattice data to be printed of N+2M.
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