CN104309339A - Print control method and device of thermal printer - Google Patents
Print control method and device of thermal printer Download PDFInfo
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- CN104309339A CN104309339A CN201410571506.8A CN201410571506A CN104309339A CN 104309339 A CN104309339 A CN 104309339A CN 201410571506 A CN201410571506 A CN 201410571506A CN 104309339 A CN104309339 A CN 104309339A
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Abstract
The invention discloses a print control method of a thermal printer. The thermal printer is charged through a rechargeable battery. The print control method of the thermal printer includes steps: obtaining temperature of a core of the thermal printer through a temperature sensor before executing printing; obtaining a singe heat count corresponding to the temperature of the core of the thermal printer according to a pre-stored temperature and single heat time count relationship list; controlling the thermal printer to perform the printing according to the obtained singe heat count. The print control method of the thermal printer effectively improves print effects of the thermal printer under low temperature. The invention further discloses a print control device of the thermal printer.
Description
Technical field
The present invention relates to thermal printing field, particularly relate to a kind of print control program and device of thermal printer.
Background technology
Thermal printing technique is widely used in social every profession and trade field, especially E-Payment field, thermal printing technique adopt by increasing electronic payment terminal product, for the printing of various bill of exchange.When evaluating thermal printing effect, gradation of drop-out colour is the evaluation index of most critical, and affects the most direct key factor of gradation of drop-out colour and have: printer operating voltage, a heat time of printer etc.Under equal conditions, higher print job voltage can obtain larger gradation of drop-out colour.
In mobile electronic payment end product, be often all built-in with rechargeable battery, and lithium ion battery is particularly common.Due to the temperature characterisitic of lithium ion battery, namely under low temperature condition, the capacity of lithium ion battery reduces rapidly, at low temperatures, the big current that thermal printing consumes instantaneously can cause the voltage dip of lithium ion battery, and then affect thermal printing effect and battery, even can cause other property abnormalities of complete machine.
But in existing thermal printing technique, print parameters all only does for normal temperature situation to be optimized, system completes once design, what thermal printer once heated simultaneously count just is fixed, environmentally temperature cannot go to adjust that printer once heats simultaneously counts in good time, often cause at low temperatures that printing effect is poor, even complete machine cannot normally work, and Long-Time Service also can make battery life shorten fast.
Summary of the invention
Technical problem to be solved by this invention is: the print control program and the device that provide a kind of thermal printer, for solving the not good problem of printing effect under low temperature environment.
In order to solve the problems of the technologies described above, the technical solution used in the present invention is:
A print control program for thermal printer, wherein, described thermal printer adopts rechargeable battery to power, and comprising:
Thermal printer movement temperature is obtained by temperature sensor before execution prints;
According to the temperature prestored with once heat the once heating that the relation table of counting obtains described movement temperature corresponding and count;
A hot spot numerical control thermal printer according to described acquisition prints.
For solving the problems of the technologies described above, the present invention also provides another technical scheme to be:
A print control unit for thermal printer, wherein, described thermal printer adopts rechargeable battery to power, and comprises temperature acquisition module, searches module and Executive Module;
Described temperature acquisition module is used for obtaining thermal printer movement temperature by temperature sensor before execution prints;
Described search module for according to the temperature that prestores with once heat the once heating that the relation table of counting obtains described movement temperature corresponding and count;
Described Executive Module is used for printing according to a hot spot numerical control thermal printer of described acquisition.
Beneficial effect of the present invention is: be different from that existing to count be changeless with the once heating simultaneously of rechargeable battery powered thermal printer, during low temperature, printing effect is not good, the present invention obtains movement temperature by protractor before printing, obtain the once heating corresponding with it according to described movement temperature to count, wherein, described movement temperature is inversely proportional to once heating to count, and print according to a described hot spot numerical control thermal printer, thus effectively reduce movement temperature lower time print the charged battery voltage that causes of printing electric current of moment and decline, eliminate charged battery voltage rapid drawdown and affect the temperature of carrying out the hot spot printed, printing effect when movement temperature is lower when effectively ensure that printing.
Accompanying drawing explanation
Fig. 1 is the flowchart of print control program one embodiment of a kind of thermal printer of the present invention;
Fig. 2 is the functional block diagram of print control unit one embodiment of a kind of thermal printer of the present invention;
Fig. 3 is that a kind of heating of an embodiment of the present invention is counted the minimum composition diagram of thermal printing system of self-adaptative adjustment;
Fig. 4 is the interface connection diagram in an embodiment of the present invention between MCU and print module;
Fig. 5 is that a kind of heating of an embodiment of the present invention is counted the thermal printing method flow chart of self-adaptative adjustment;
Label declaration:
1, memory cell; 2, rechargeable battery; 3, microprocessor; 4, thermal printing module; 10, temperature acquisition module; 20, module is searched; 30, Executive Module.
Detailed description of the invention
By describing technology contents of the present invention in detail, realized object and effect, accompanying drawing is coordinated to be explained below in conjunction with embodiment.
The design of most critical of the present invention is: count according to the once heating that movement temperature controls to print, thus effectively ensures the temperature of hot spot, printing effect when raising movement temperature is lower.
Please refer to Fig. 1, is the flow chart of print control program one embodiment of a kind of thermal printer of the present invention, a kind of print control program of thermal printer, and wherein, described thermal printer adopts rechargeable battery to power, and comprising:
S1, before execution prints by temperature sensor acquisition thermal printer movement temperature;
S2, according to the temperature that prestores with once heat the once heating that the relation table of counting obtains described movement temperature corresponding and count;
S3, to print according to a hot spot numerical control thermal printer of described acquisition.
Wherein, temperature with once to heat the once heating that the relation table of counting records corresponding to different cassette mechanism temperature and count, described once heating is counted and is become positive correlation with temperature;
Thermal printing is developed by the heating module heating heat-sensitive paper on movement.Heating module is made up of the little heating unit of some, and prints on thermal paper character and graphic out, the pixel all produced by these heating unit heats forms.
These heating units, are also commonly called as hot spot.Hot spot becomes a line to arrange on movement, and the pixel that correspondence can complete a line on heat-sensitive paper prints.During printing, the pixel of a line can once print, and also can print several times.Complete the pixel quantity of printing, be namely that printer once heats and counts at every turn.
From foregoing description, beneficial effect of the present invention is: before carrying out printing, obtain movement temperature at thermal printer by temperature sensor, and count according to the once heating that movement temperature obtains printer, when described movement temperature and desirable print temperature comparatively close to time to count with the once heating specified and carry out heating and printing; The quantity of counting once is heated described in reducing when movement temperature is larger lower than desirable print temperature, thus printing immediate current causes charged battery voltage rapid drawdown when effectively preventing movement temperature lower, ensure that the temperature of each hot spot, thus improve thermal printer printing effect at low ambient temperatures.
Further, described thermal printer is arranged in electronic payment terminal, is particularly arranged in POS.
Further, it is characterized in that, described temperature sensor is thermistor, and in other embodiments, described temperature sensor also can be thermocouple sensor/sensor.
Further, when thermal printer is in non-print state, detect the temperature of described thermal printer movement with a predeterminated frequency, when the temperature of movement is lower than the minimum movement threshold temperature preset, controls thermal printer movement and heat.
In one embodiment, described predeterminated frequency is 1 minute, and described minimum movement threshold temperature is-10 degrees Celsius, and in other embodiments, described frequency can for the other times value being less than 1 minute or being greater than 1 minute.
From foregoing description, detect movement temperature by predeterminated frequency, and control movement temperature more than minimum movement threshold temperature, thus make the temperature of movement relatively stable, therefore, the immediate current of printing can be effectively reduced when printer starts to print, improve the printing effect of thermal printer.
Further, in the above-described embodiment, the once heating of temperature and correspondence that thermal printer not only obtains movement when performing print out task is counted, also comprise the temperature obtaining thermal printing paper in printer, to count to described once heating according to the temperature of described thermal printing paper and finely tune, described fine setting is specially:
When the temperature of thermal printing paper is lower than the minimum heat-sensitive paper threshold temperature preset, described in minimizing, once heating is counted;
When the temperature of thermal printing paper is higher than the highest heat-sensitive paper threshold temperature preset, described in increase, once heating is counted.
Due to when printing, the movement of thermal printer directly contacts with heat-sensitive paper, and the thermal printing paper of different temperatures is different on the impact of the temperature of movement, when the temperature of heat-sensitive paper is lower, can obviously reduces the temperature of movement thus affect printing effect.From foregoing description, detect the temperature of thermal printing paper before printing, and according to the temperature of thermal printing paper described once heating counted and carry out fine setting and can effectively prevent thermal printing paper temperature on the impact of hot spot temperature, thus improve printing effect.
Another technical scheme of the present invention is:
Refer to Fig. 2, for the print control unit of a kind of thermal printer of functional block diagram of the print control unit of a kind of thermal printer of the present invention, wherein, described thermal printer adopts rechargeable battery to power, and comprises temperature acquisition module 10, searches module 20 and Executive Module 30;
Described temperature acquisition module 10 for obtaining thermal printer movement temperature by temperature sensor before execution prints;
Described search module 20 for according to the temperature that prestores with once heat the once heating that the relation table of counting obtains described movement temperature corresponding and count;
Described Executive Module 30 prints for a hot spot numerical control thermal printer according to described acquisition.
Seen from the above description, the once heating that the present invention controls thermal printer according to movement temperature is counted, thus the hot spot temperature effectively preventing charged battery voltage rapid drawdown and cause is on the low side, effectively improves thermal printer printing effect at low ambient temperatures.
Further, described thermal printer is arranged in electronic payment terminal, is particularly arranged in POS.
Further, described temperature sensor is thermistor.
Further, described temperature acquisition module 10 also for when thermal printer is in non-print state, detects the temperature of described thermal printer movement with a predeterminated frequency;
Described Executive Module 30 also for when the temperature of movement is lower than the minimum movement threshold temperature preset, controls thermal printer movement and heats.
From foregoing description, it is relatively stable that the present invention can maintain movement temperature, effectively reduces the printing electric current printing moment, makes the temperature of hot spot keep homeostasis, improve low temperature printing effect.
Further, in the above-described embodiment, the once heating of thermal printer temperature and correspondence that described temperature acquisition module 10 not only obtains movement when performing print out task is counted, also for obtaining the temperature of thermal printing paper in printer, described Executive Module 30 is also finely tuned for counting to described once heating according to the temperature of described thermal printing paper, and described fine setting is specially:
When the temperature of thermal printing paper is lower than the minimum heat-sensitive paper threshold temperature preset, described in minimizing, once heating is counted;
When the temperature of thermal printing paper is higher than the highest heat-sensitive paper threshold temperature preset, described in increase, once heating is counted.
From foregoing description, detect the temperature of thermal printing paper before printing, and according to the temperature of thermal printing paper described once heating counted and carry out fine setting and can effectively prevent thermal printing paper temperature on the impact of hot spot temperature, thus improve printing effect.
Embodiments of the invention one are: the control method of thermal printer in a kind of POS, wherein, thermal printer is arranged at the front end of POS inside, thermal printer and POS adopt rechargeable battery to power, thermal printer cassette is integrated with temperature sensor (as thermistor), described temperature sensor is electrically connected on MCU (the Micro Control Unit of POS, micro-control unit), described MCU is also connected to the printing Enable Pin being electrically connected on thermal printer, prints for controlling printer.
When POS needs to print, temperature sensor sense temperature also exports available signal (as voltage signal), the output signal of the MCU samples temperature sensor of POS, and the Current Temperatures information that can obtain movement according to certain transformational relation;
Preserve a temperature in system and once heat the relation table between counting (counting relation table hereinafter referred to as temperature-heating), relation table is counted in temperature-heating can easily via means acquisitions such as experiment tests, and be directly preset in product systems before product export, temperature-heating once heating storing different cassette mechanism temperature value corresponding in relation table of counting is counted, thus make movement reach optimal printing temperature after described once heating, after MCU gets current environmental temperature, inquire about temperature-heating immediately to count relation table, and complete printing according to the state modulator thermal printer cassette got.
Embodiments of the invention two are: refer to Fig. 3, and the count thermal printing system of self-adaptative adjustment of a kind of heating is minimum composed as follows:
Memory cell 1, storage program and data, temperature-heating mentioned in the present invention relation table of counting directly exists in memory cell;
Rechargeable battery 2, Mobile portable terminal is all equipped with rechargeable battery, comparatively commonly rechargeable lithium ion batteries;
Microprocessor 3, CPU, the process being responsible for all information of system controls.In thermal printing system, the state being also responsible for thermal printer cassette obtains, controls, and print data process is also transferred to printer core;
Thermal printing module 4, the data sent for receiving MCU complete printing, generally include: heat sensitive printing unit, stepper motor, temperature sensor etc.
Reference subordinate list 1 is for temperature and once heat relation table of counting:
| Temperature | T1-T2 | T3-T4 | T5-T6 | … | Tn-1-Tn |
| Heating is counted | N1 | N2 | N3 | … | Nn |
Table 1
Have temperature-heating in system memory unit to count relation table, once heating corresponding to the temperature range that in table, specific definition is different is counted.General once heating is counted and is become positive correlation with temperature, and namely temperature is higher, and the once heating of permission is counted also more.Relation table is counted in temperature-heating can in product development stage, and debugging method obtains optimum value by experiment.The maximum number of points once heated should meet the specification requirement of thermal printer cassette.
Accompanying drawing 4 is the interface connection diagrams between typical MCU and print module, wherein:
Print data interface: MCU transferring printing data is to printer;
Print Control interface: be mainly the enable control signal of heating, control a heat time of heating module;
Motor control interface: control motor and complete heat-sensitive paper;
Temperature sampling interface: the temperature sensor in acquisition module exports.
With reference to accompanying drawing 5, the count thermal printing method of self-adaptative adjustment of a kind of heating is:
B.1: system acceptance, to print command, starts print progress;
B.2: before printing, MCU first samples the output of the temperature sensor (as thermistor) in print module, and obtains current temperature value according to certain transformational relation;
B.3:MCU current temperature value is judged whether within the scope of rational print temperature;
B.4: if current temperature value transfinites, namely temperature is too high or too low, and system is then judged to be not suitable for printing, and is pointed out by man-machine interface (as LCDs);
B.5: if Current Temperatures is in the temperature range of applicable printing, then system to be counted inquiring about built-in temperature-heating further relation table, obtains the hot spot numerical value mated with current temperature value;
B.6: according to the hot spot numerical value obtained, transferring printing data to print module, and controls it and completes final printing;
B.7: when secondary printing completes, print progress is terminated.
In sum, the print control program of thermal printer provided by the invention and device once can not only heat according to movement temperature adjustment printer counts, the printing effect of thermal printer under effective raising low temperature environment, the heavy current impact extending battery life to battery can also be reduced, further, the present invention also detects movement temperature with certain frequency, protects movement temperature and maintains minimum movement threshold temperature, make the temperature of movement relatively stable, improve the printing effect of thermal printer; Further, the present invention also adjusts once heating according to the temperature of thermal printing paper and counts, and reduces heat-sensitive paper temperature to the impact of movement hot spot temperature, further increases thermal printing effect.
In sum, the print control program of thermal printer provided by the invention and device can not only improve the printing effect of thermal printer, make it under different temperature environments, all have good printing effect, and effectively can improve and print speed and avoid thermal printing paper temperature on the impact of movement temperature, thus improve the printing effect of thermal printer further.
The foregoing is only embodiments of the invention; not thereby the scope of the claims of the present invention is limited; every equivalents utilizing description of the present invention and accompanying drawing content to do, or be directly or indirectly used in relevant technical field, be all in like manner included in scope of patent protection of the present invention.
Claims (10)
1. a print control program for thermal printer, wherein, described thermal printer adopts rechargeable battery to power, and it is characterized in that, comprising:
Thermal printer movement temperature is obtained by temperature sensor before execution prints;
According to the temperature prestored with once heat the once heating that the relation table of counting obtains described movement temperature corresponding and count;
A hot spot numerical control thermal printer according to described acquisition prints.
2. the print control program of thermal printer according to claim 1, is characterized in that, described thermal printer is arranged in electronic payment terminal.
3. the print control program of thermal printer according to claim 2, is characterized in that, described temperature sensor is thermistor.
4. the print control program of thermal printer according to claim 3, it is characterized in that, when thermal printer is in non-print state, the temperature of described thermal printer movement is detected with a predeterminated frequency, when the temperature of movement is lower than the minimum movement threshold temperature preset, controls thermal printer movement and heat.
5. the print control program of thermal printer according to claim 4, is characterized in that, also comprises the temperature obtaining thermal printing paper in printer, and to count to described once heating according to the temperature of described thermal printing paper and finely tune, described fine setting is specially:
When the temperature of thermal printing paper is lower than the minimum heat-sensitive paper threshold temperature preset, described in minimizing, once heating is counted;
When the temperature of thermal printing paper is higher than the highest heat-sensitive paper threshold temperature preset, described in increase, once heating is counted.
6. a print control unit for thermal printer, wherein, described thermal printer adopts rechargeable battery to power, and it is characterized in that, comprises temperature acquisition module, searches module and Executive Module;
Described temperature acquisition module is used for obtaining thermal printer movement temperature by temperature sensor before execution prints;
Described search module for according to the temperature that prestores with once heat the once heating that the relation table of counting obtains described movement temperature corresponding and count;
Described Executive Module is used for printing according to a hot spot numerical control thermal printer of described acquisition.
7. the print control unit of thermal printer according to claim 6, is characterized in that, described thermal printer is arranged in electronic payment terminal.
8. the print control unit of thermal printer according to claim 7, is characterized in that, described temperature sensor is thermistor.
9. the print control unit of thermal printer according to claim 8, is characterized in that, described temperature acquisition module also for when thermal printer is in non-print state, detects the temperature of described thermal printer movement with a predeterminated frequency;
Described Executive Module also for when the temperature of movement is lower than the minimum movement threshold temperature preset, controls thermal printer movement and heats.
10. the print control unit of thermal printer according to claim 9, it is characterized in that, described temperature acquisition module is also for obtaining the temperature of thermal printing paper in printer, described Executive Module is also finely tuned for counting to described once heating according to the temperature of described thermal printing paper, and described fine setting is specially:
When the temperature of thermal printing paper is lower than the minimum heat-sensitive paper threshold temperature preset, described in minimizing, once heating is counted;
When the temperature of thermal printing paper is higher than the highest heat-sensitive paper threshold temperature preset, described in increase, once heating is counted.
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| CN105082795A (en) * | 2015-08-24 | 2015-11-25 | 福建联迪商用设备有限公司 | Printing control method and system for thermal printer and electronic payment terminal |
| CN107244146A (en) * | 2017-05-31 | 2017-10-13 | 青岛海信智能商用系统股份有限公司 | Thermal printing head temperature-control circuit and thermal printer |
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Application publication date: 20150128 |