CN1403295A - Printing method of thermal print head - Google Patents
Printing method of thermal print head Download PDFInfo
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- CN1403295A CN1403295A CN 01132813 CN01132813A CN1403295A CN 1403295 A CN1403295 A CN 1403295A CN 01132813 CN01132813 CN 01132813 CN 01132813 A CN01132813 A CN 01132813A CN 1403295 A CN1403295 A CN 1403295A
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- 238000007639 printing Methods 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000010438 heat treatment Methods 0.000 claims abstract description 50
- 239000000975 dye Substances 0.000 claims description 39
- 238000001208 nuclear magnetic resonance pulse sequence Methods 0.000 abstract description 14
- 238000007651 thermal printing Methods 0.000 abstract 3
- 230000000694 effects Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 241001270131 Agaricus moelleri Species 0.000 description 7
- 238000005520 cutting process Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 2
- 240000001439 Opuntia Species 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003086 colorant Substances 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000000859 sublimation Methods 0.000 description 1
- 230000008022 sublimation Effects 0.000 description 1
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Abstract
The invention provides a printing method for increasing the number of color density gradations of a thermal printing head. The thermal printing head comprises a plurality of heaters which are arranged in a linear shape at equal intervals and are used for heating a color ribbon so that the color dye on the color ribbon prints a linear image on a piece of photographic paper, and the number of the heaters which are arranged in the linear shape on the thermal printing head is the number of the printing points of the linear image. The number of color density gradations of each printing dot on the line image is determined by the length of time that the corresponding heater heats the color tape, and the length of time that each heater heats is determined by a time pulse sequence, each time pulse sequence including an integer part and a mantissa part, the mantissa part being used to increase the number of gradations, which is also the number of gradations that increase the color density.
Description
Technical field
The present invention relates to a kind of Method of printing of thermal printer head, particularly relate to a kind of Method of printing that increases the grey of thermal printer head.
Background technology
The main difference of photo printer and general printer is that photo printer can be printed than images with high image quality, for example the photograph of high image quality.Please refer to Fig. 1 and Fig. 2, Fig. 1 is the schematic diagram of existing photo printer 10; Fig. 2 is the schematic diagram of the printing feeding mode of existing photo printer 10.As shown in Figure 1, existing photo printer 10 includes a colour band 14, which is provided with a plurality of dyestuff blocks, be used for depositing the coloured dye of different colours, one thermal printer head 12 is fixed on the photo printer 10, be used for this coloured dye being printed on the photo paper 16 to dyestuff heating, Tape movement device 18 of the same colour, be used for mobile colour band 14, so that thermal printer head 12 is able to the stored dyestuff of a plurality of dyestuff blocks on the colour band 14 is printed on the photo paper 16, one roller set 20 is used for fixing and moves photo paper 16 along a predetermined direction, so that thermal printer head 12 is able to a color graphics is printed on the photo paper 16.
As shown in Figure 2, include a plurality of heaters 22 that are linear and equidistant arrangement on the thermal printer head 12, be used for to colour band 14 heating, so that the mode of the coloured dye on the colour band 14 by heat sublimation is attached on the photo paper 16, wherein, when thermal printer head 12 is used for to photo paper 16 heating, each heater 22 of thermal printer head 12 can and produce a plurality of corresponding print point X1 and forms a linear image Y1 colour band 14 heating on photo paper 16, afterwards, photo paper 16 can move along this predetermined direction with a predetermined speed by roller set 20, so that thermal printer head 12 is able to print another linear image Y2 on photo paper 16.So, can print a plurality of linear images constantly on the photo paper 16, till being looked like to fill up by Line Chart on the photo paper 16, promptly finish the print routine of photo paper 16.
From the above, the number of thermal printer head 12 upper heaters 22 has determined the number of the print point X1 on the every Line Chart picture.In addition, the length of 14 heat time heating times of 22 pairs of colour bands of each heater and heating number of times can determine the color depth of 22 corresponding print point X1 of each heater on photo paper 16, and this color density is so-called gray scale (gray level).
Please refer to Fig. 3 A and Fig. 3 B.Fig. 3 A is the schematic diagram of time pulse sequence signal on the color density grey of the thermal printer head 12 of existing photo printer 10 and the heater 22.Fig. 3 B is the time pulse sequence signal of heater 22 among Fig. 3 A and the schematic diagram of corresponding sequence signal.Shown in Fig. 3 A and Fig. 3 B, the thermal printer head 12 of existing photo printer 10 is before printing photo paper 16, (digital signal value of heater 22 is " 1 " can to open a plurality of heaters 22 on the thermal printer head 12 simultaneously, the digital signal value of closing heater 22 is " 0 ") scheduled time Tp is so that institute's having heaters 22 of thermal printer head 12 reaches a predetermined temperature, this process promptly is called warm-up phase, then, photo printer 10 can be opened a plurality of heaters 22 on the thermal printer head 12 continuously according to the required corresponding grey of a plurality of corresponding print point X1 (being the required corresponding color depths of a plurality of print point X1) of these a plurality of Line Chart pictures on the photo paper 16.Wherein, length heat time heating time of heater 22 can be represented with corresponding sequence numeral with a time pulse sequence 30, and the time interval of each time pulse 32 (it is about a fixed intervals Tu) promptly is the unit interval of heater 22, and the heat that the time interval Tu internal heater 22 of each time pulse 32 is bestowed on print point X1 also is roughly the same, and promptly the coloured dye that is printed on the photo paper 16 when each heating has identical approximately unit quantity.Refer in particular to out at this, the reason that above-mentioned what is called is roughly the same is because the heat history effect causes, and it can utilize existing control method to be controlled in the error range of being scheduled to, and is not described in detail in this.
The thermal printer head 12 of existing photo printer 10 is divided into 256 degree with the grey of print point X1, and the lightest person of color is a gray scale 0, and the darkest person of color is a gray scale 255.That is to say, when the grey of print point X1 is gray scale N, wherein, N is one more than or equal to 0 and smaller or equal to 255 integer, then just must after this warm-up phase, open N unit heat time heating time continuously, promptly import N time pulse continuously or input N data signal " 1 " on the sequence numeral with the corresponding heater 22 of print point X1.Since presumable have deeply shallow of color density of the print point X1 on the photo paper 16 on each bar Line Chart picture, therefore, Line Chart picture of every printing, a plurality of heaters 22 all must be finished the time span of 255 time pulses.If want the color grey is risen to original twice, a plurality of heaters 22 must be finished the time span of 512 time pulses, therefore, if want that the color grey is risen to original several times then needs to finish the more time pulse, so, improving color-resolution has in this way wasted many times, has also improved production cost.
Summary of the invention
The object of the present invention is to provide a kind of Method of printing that increases the grey of thermal printer head, to reach the purpose that improves the color density grey.
The object of the present invention is achieved like this, a kind of Method of printing of thermal printer head promptly is provided, this thermal printer head includes a plurality of heaters that are linear and equidistant arrangement, be used for a dyestuff is heated so that this dyestuff is printed on the object, this thermal printer head can form a plurality of print points that are linear and equidistant arrangement on this object in a scheduled time slot, the color depth of each print point is controlled by a predetermined grey, each grey has included an integer part and a mantissa part, controlling a heater according to a predetermined grey when producing a corresponding colored point, this Method of printing includes the following step: open this heater and the corresponding number of times of this integer part one by one and continuously according to the integer part of this grey, so that this coloured dye can be printed to this object continuously with the corresponding position of this heater on, wherein this integer part is more than or equal to zero, each unit interval of opening this heater is roughly the same, and the unit quantity that is printed to the coloured dye on this object when at every turn heating also is roughly the same; And close one first a predetermined number unit interval of this heater earlier according to the mantissa part of this grey, then open this one second predetermined number unit interval of heater more one by one and continuously, this first and second predetermined number is integer and more than or equal to one, and this heater is printed to this coloured dye the unit quantity that the total amount on this object is printed during each heating when this integer part less than this heater when this mantissa part.
The present invention also provides a kind of printer, and it includes: a fixture is used for fixing an object to be printed; And a thermal printer head, being used for to dyestuff heating so that this dyestuff is printed on the object, this thermal printer head includes a plurality of heaters that are linear and equidistant arrangement; Wherein this thermal printer head can form a plurality of print points that are linear and equidistant arrangement on this object in a scheduled time slot, the color depth of each print point is controlled by a predetermined grey, each grey has included an integer part and a mantissa part, controlling a heater according to a predetermined grey when producing a corresponding colored point, this thermal printer head can according to the integer part of this grey come and open this heater and the corresponding number of times of this integer part one by one and continuously so that this coloured dye can be printed to this object continuously with the corresponding position of this heater on, wherein this integer part is more than or equal to zero, each unit interval of opening this heater is roughly the same, and the unit quantity that is printed to the coloured dye on this object when at every turn heating also is roughly the same; Thereafter this thermal printer head can be closed one first a predetermined number unit interval of this heater earlier according to the mantissa part of this grey, then open this one second predetermined number unit interval of heater more one by one and continuously, this first and second predetermined number is integer and more than or equal to one, and this heater is printed to this coloured dye the unit quantity that the total amount on this object is printed during each heating when this integer part less than this heater when this mantissa part.
The advantage of the inventive method is, compared with prior art, do not changing under the total time pulse number purpose condition, utilizing the effect of heat history and reach the effect that improves the color density grey, that is to say, under the condition that does not increase the time-write interval, improved the color-resolution of each print point on the photo paper, thereby improve the effect of printing image quality, so, adopt Method of printing of the present invention to improve color density, really can save many times, and reduce production costs.
Description of drawings
Fig. 1 is the schematic diagram of existing photo printer;
Fig. 2 prints the schematic diagram of feeding mode for existing photo printer;
Fig. 3 A is the schematic diagram of time pulse sequence signal on the color density grey of the thermal printer head of existing photo printer and the heater;
Fig. 3 B is the time pulse sequence signal of heater among Fig. 3 A and the schematic diagram of corresponding sequence digital signal data;
Fig. 4 a, Fig. 4 b and Fig. 4 c are first embodiment of the invention increases the Method of printing of thermal printer head grey with the mode of heating of noncontinuity in two gray scales time pulse sequence signal schematic representation;
Fig. 5 a, Fig. 5 b and Fig. 5 c are second embodiment of the invention increases the Method of printing of thermal printer head grey with the mode of heating of noncontinuity in two gray scales time pulse sequence signal schematic representation;
Fig. 6 a, Fig. 6 b and Fig. 6 c are third embodiment of the invention increases the Method of printing of thermal printer head grey with the mode of heating of noncontinuity in two gray scales time pulse sequence signal schematic representation.
The specific embodiment
The structure of photo printer of the present invention and thermal printer head and printing feeding mode are identical with the prior art of Figure 1 and Figure 2, therefore no longer repeat specification.As existing described, the thermal printer head of photo printer of the present invention is before printing a photo paper, (digital signal value of heater is " 1 " can to open a plurality of heaters on this thermal printer head simultaneously, the digital signal value of closing heater is " 0 ") scheduled time Tp is so that institute's having heaters of this thermal printer head reaches a predetermined temperature, this is warm-up phase, then, according to the required corresponding grey of a plurality of corresponding print point X2 of many Line Chart pictures on this photo paper, open a plurality of heaters on this thermal printer head continuously again.
Because length heat time heating time of each heater can be represented with corresponding sequence numeral with a time pulse sequence 70, and the time interval of each time pulse 72 (it probably is a fixed intervals Tu) promptly is the unit interval of opening a plurality of heaters, and the heat that these a plurality of heaters are bestowed on a plurality of print point X2 in the time interval Tu of each time pulse 72 also is roughly the same, and promptly the coloured dye that is printed on the photo paper when each heating has the unit quantity that is roughly the same.Because the color depth of each print point X2 is to be controlled by a predetermined grey, when these a plurality of heaters of unlatching heat a plurality of print point X2, each print point X2 is subjected to the heating number of times of corresponding heater to be the grey that each print point X2 produces color density, and each grey has included an integer part W and a mantissa part T.Wherein, the integer part W of this grey is one by one and continuously heater and the corresponding number of times of integer part W, so that coloured dye is printed on a photo paper and the corresponding position of this heater serially, wherein, integer part W is more than or equal to zero, and the unit interval of each heater its value that is roughly the same is Tu, and the unit quantity that is printed to this coloured dye on this photo paper when at every turn heating also is roughly the same.The mantissa part T of this grey is for closing unit interval Tu of this heater earlier, then open the one or more unit interval Tu of this heater more one by one and continuously, and this heater is printed to the unit quantity that total amount on this photo paper is printed during each heating during in integer part W less than this heater at mantissa part T with this coloured dye.This result causes owing to the heat history effect, promptly the accumulation of the many more heats of printing continuously of number of times is also many more, and print the effect of the effect of heat history continuously greater than discontinuous printing heat history, so after closing the one or more unit interval Tu of this heater earlier, open a plurality of unit interval Tu of this heater more one by one and continuously, wherein, to have different units of heat and the time pulse signal 72 contained units of heat after more many more for each time pulse signal 72.
Please refer to Fig. 4 a, Fig. 4 b and Fig. 4 c, it increases the time pulse sequence signal schematic representation of the Method of printing of thermal printer head grey with the mode of heating of noncontinuity in two gray scales for first embodiment of the invention.Shown in Fig. 4 a, Fig. 4 b and Fig. 4 c, first embodiment of the invention promptly is to utilize above-mentioned principle to increase the grey of thermal printer head with the mode of heating of noncontinuity in gray scale N (N0) and gray scale N+1, its method flow is as follows: step 100: open a heater and heat a scheduled time Tp, so that this heater reaches the predetermined temperature that can carry out print routine; Step 102: open this heater continuously N time, promptly to N time pulse signal of this heater input; Step 104: close Tu heat time heating time of this unit of heater; Step 106: open the one or more unit interval Tu of this heater more continuously, promptly again this heater is imported at least one time pulse signal; Step 108: produce a gray scale N+1/2, to reach the purpose that grey increases.
As described in above-mentioned step, the purpose of execution in step 100 promptly is to make the thermal printer head of photo printer reach print temperature when printing this photo paper.Because continuously after the heater, through closing a heat that time pulse signal contained before a heat that time pulse signal contained that Tu heat time heating time of unit opens this heater again and produced can be closed less than this heater, this is that this heater is after cutting out, temperature can descend, so opening the contained heat of this time pulse signal that this heater exports again can be less and be a measured value, and it is all inequality to open the contained heat of each time pulse signal in a plurality of time pulse signals of being exported behind this heater again, and the contained heat of the latter can be healed greatly more, and this is the result of heat history effect.Execution in step 102 to the purpose of step 106 promptly is to utilize this measured value as a new heating unit quantity, comes execution in step 108 and obtains another grey.For example continuously after heater N time, through close the heat that this time pulse signal contained that Tu heat time heating time of unit opens this heater again and produced be integer part W time pulse signal institute heat content 50%, can in gray scale N and gray scale N+1, obtain another gray scale N+1/2.Similarly, if through close the heat that this time pulse signal contained that Tu heat time heating time of unit opens this heater again and produced be integer part W time pulse signal institute heat content 25%, and and then the contained heat of another time pulse signal of this time pulse signal be integer part W time pulse signal institute heat content 50%, can in gray scale N and gray scale N+1, obtain in addition two gray scale N+1/4 and N+3/4 (promptly importing and two time pulse signals respectively).
Please refer to Fig. 5 a, Fig. 5 b and Fig. 5 c, it increases the time pulse sequence signal schematic representation of the Method of printing of thermal printer head grey with the mode of heating of noncontinuity in two gray scales for second embodiment of the invention.As first embodiment, the color depth of each print point X3 is also controlled by a predetermined grey on one photo paper, when a plurality of heaters on the open printing head heat these a plurality of print point X3, each print point X3 is subjected to the heating number of times of corresponding heater to be the grey that each print point X3 produces color density, and each grey has included the i.e. mantissa part T of an integer part W.Wherein, the integer part W of this grey is one by one and continuously heater and the corresponding number of times of integer part W, so that coloured dye is printed on this photo paper and the corresponding position of this heater serially, wherein, integer part W is more than or equal to zero, and the unit interval of each heater its value that is roughly the same is Tu, and the unit quantity that is printed to this coloured dye on this photo paper when at every turn heating also is roughly the same.The mantissa part T of this grey closes a plurality of unit interval Tu of this heater earlier, then open the one or more unit interval Tu of this heater more one by one and continuously, and this heater is printed to the unit quantity that total amount on this photo paper is printed during each heating during in integer part W less than this heater in mantissa part T with this coloured dye, and each included time pulse signal 72 of mantissa part T has different units of heat and the back more contained units of heat of time pulse signal 72 is many more.Shown in Fig. 5 a, Fig. 5 b and Fig. 5 c, second embodiment of the invention also is to utilize the grey that increases thermal printer head as the principle of first embodiment in gray scale N (N0) and gray scale N+1 with the mode of heating of noncontinuity, its method flow is as follows: step 120: open a heater and heat a scheduled time Tp, so that this heater reaches the predetermined temperature that can carry out print routine; Step 122: open this heater continuously N time, promptly to N time pulse signal of this heater input; Step 124: close Tu heat time heating time of this two unit of heater, promptly input time, pulse signal was 0 number secondary; Step 126: open the one or more unit interval Tu of this heater more continuously, promptly again this heater is imported at least one time pulse signal; Step 128: produce a gray scale N+1/4, to reach the purpose that grey increases.
As described in above-mentioned step, the purpose of execution in step 120 promptly is to make the thermal printer head of photo printer reach print temperature when printing this photo paper.Because continuously after the heater, through closing a heat that time pulse signal contained before a heat that time pulse signal contained that two Tu heat time heating time of unit open this heater again and produced can be closed much smaller than this heater, this is that this heater is after cutting out, temperature can descend many, so opening the contained heat of this time pulse signal that this heater exports again can be less and be a measured value, and it is all inequality to open the contained heat of each time pulse signal in a plurality of time pulse signals of being exported behind this heater again, and the contained heat of the latter can be healed greatly more, and this is the result of heat history effect.Execution in step 122 to the purpose of step 126 promptly is to utilize this measured value as a new heating unit quantity, comes execution in step 128 and obtains another grey.For example continuously after heater N time, through close the heat that this time pulse signal contained that two Tu heat time heating time of unit open this heater again and produced be integer part W time pulse signal institute heat content 25%, and and then the contained heat of another time pulse signal of this time pulse signal be integer part W time pulse signal institute heat content 50%, can in gray scale N and gray scale N+1, obtain two gray scale N+1/4, N+3/4.(promptly importing one, two time pulse signals respectively).
Please refer to Fig. 6 a, Fig. 6 b and Fig. 6 c, it increases the time pulse sequence signal schematic representation of the Method of printing of thermal printer head grey with the mode of heating of noncontinuity in two gray scales for third embodiment of the invention.Shown in Fig. 6 a, Fig. 6 b and Fig. 6 c, third embodiment of the invention utilizes above-mentioned principle to increase the grey of thermal printer head with the mode of heating of noncontinuity in gray scale N (N0) and gray scale N+1 as first embodiment and first embodiment, its method flow is as follows: step 130: open a heater and heat a scheduled time Tp, so that this heater reaches the predetermined temperature that can carry out print routine; Step 132: open this heater continuously N time, promptly to N time pulse signal of this heater input; Step 134: close Tu heat time heating time of this unit of heater; Step 136: open unit interval Tu of this heater again, promptly again to time pulse signal of this heater input; Step 138: close Tu heat time heating time of this unit of heater again; Step 140: open unit interval Tu of this heater again, promptly again to time pulse signal of this heater input; Step 142: produce a gray scale N+3/4, to reach the purpose that grey increases.
As described in above-mentioned step, the purpose of execution in step 130 promptly is to make the thermal printer head of photo printer reach print temperature when printing this photo paper.Because continuously after the heater, through closing a heat that time pulse signal contained before a heat that time pulse signal contained that Tu heat time heating time of unit opens this heater again and produced can be closed less than this heater, this is that this heater is after cutting out, temperature can descend, can be less and be a measured value so open the contained heat of this time pulse signal that this heater exports again.Execution in step 132 to the purpose of step 140 promptly is to utilize this measured value as a new heating unit quantity, comes execution in step 142 and obtains another grey.For example continuously after heater N time, through close the heat that this time pulse signal contained that Tu heat time heating time of unit opens this heater again and produced be integer part W time pulse signal institute heat content 50%.Afterwards, close Tu heat time heating time of this unit of heater again, then, open unit interval Tu of this heater again, at this moment, the heat that this time pulse signal contained be integer part W time pulse signal institute heat content 25%, so, can in gray scale N and gray scale N+1, obtain another gray scale N+3/4.
Can learn by first embodiment, second embodiment and the 3rd embodiment, each heater on this printhead all can the method obtains other grey in any two gray scales (gray scale N and gray scale N+1), and on this photo paper corresponding print point do the action of heating, and because presumable have deeply shallow of color density of the print point on each bar Line Chart picture on this photo paper, therefore, Line Chart picture of every printing, these a plurality of heaters also only need be finished the time span of 255 time pulses.So, under the condition that does not increase the time-write interval, the available gray scale number of the print point on this photo paper on each bar Line Chart picture has increased many, and therefore, the color-resolution of each print point also rises to original several times.
Point out that at this described photo printer of the foregoing description fixes with a fixture and moves a photo paper, and thermal printer head is in a fixed manner in order to be printed to dyestuff contained on the colour band on this photo paper.Moreover, thermal printer head of the present invention also can be installed on this photo printer in a movable manner, and fix this photo paper with this fixture, then, utilize this thermal printer head dyestuff contained on the colour band to be printed on this photo paper in the mode of a line one line.
The above only is preferred embodiment of the present invention, and all equalizations of doing according to claim of the present invention change and modify, and all should belong to the covering scope of patent of the present invention.
Claims (11)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 01132813 CN1403295A (en) | 2001-09-06 | 2001-09-06 | Printing method of thermal print head |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 01132813 CN1403295A (en) | 2001-09-06 | 2001-09-06 | Printing method of thermal print head |
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Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1301864C (en) * | 2003-06-06 | 2007-02-28 | 诚研科技股份有限公司 | Thermal transfer printer for transferring multiple color regions to imaging medium and printing method thereof |
| CN100398326C (en) * | 2004-12-27 | 2008-07-02 | 诚研科技股份有限公司 | Method for achieving image processing by adjusting heating time |
| CN100408342C (en) * | 2003-06-04 | 2008-08-06 | 冲电气工业株式会社 | Heat sensible type printer and adjustment method of printing concerntration |
| CN100519208C (en) * | 2003-08-11 | 2009-07-29 | 诚研科技股份有限公司 | Method for improving thermal printing quality |
| WO2009121236A1 (en) * | 2008-03-31 | 2009-10-08 | 山东新北洋信息技术股份有限公司 | A grayscale printing control method, and an apparatus thereof |
| CN100572080C (en) * | 2006-01-31 | 2009-12-23 | 大日本印刷株式会社 | Thermal duplication recording device and image forming method |
| CN101410255B (en) * | 2006-03-31 | 2011-05-11 | 大日本印刷株式会社 | Thermal recording device, image forming method, and printed matter |
| CN107571634A (en) * | 2016-07-05 | 2018-01-12 | 富士通电子零件有限公司 | Thermal printer |
| JP2018047641A (en) * | 2016-09-23 | 2018-03-29 | カシオ計算機株式会社 | Printer, control method and program of printer |
| JP2019181819A (en) * | 2018-04-11 | 2019-10-24 | 東芝テック株式会社 | Thermal printer |
| CN110588180A (en) * | 2018-06-12 | 2019-12-20 | 佳能株式会社 | Image forming apparatus and control method thereof |
| CN112339442A (en) * | 2020-10-13 | 2021-02-09 | 重庆品胜科技有限公司 | Printing method and printer |
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2001
- 2001-09-06 CN CN 01132813 patent/CN1403295A/en active Pending
Cited By (16)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN100408342C (en) * | 2003-06-04 | 2008-08-06 | 冲电气工业株式会社 | Heat sensible type printer and adjustment method of printing concerntration |
| CN1301864C (en) * | 2003-06-06 | 2007-02-28 | 诚研科技股份有限公司 | Thermal transfer printer for transferring multiple color regions to imaging medium and printing method thereof |
| CN100519208C (en) * | 2003-08-11 | 2009-07-29 | 诚研科技股份有限公司 | Method for improving thermal printing quality |
| CN100398326C (en) * | 2004-12-27 | 2008-07-02 | 诚研科技股份有限公司 | Method for achieving image processing by adjusting heating time |
| CN100572080C (en) * | 2006-01-31 | 2009-12-23 | 大日本印刷株式会社 | Thermal duplication recording device and image forming method |
| CN101410255B (en) * | 2006-03-31 | 2011-05-11 | 大日本印刷株式会社 | Thermal recording device, image forming method, and printed matter |
| US8459769B2 (en) | 2008-03-31 | 2013-06-11 | Shandong New Beiyang Information Technology Co., Ltd | Grayscale printing control method and device |
| CN101549591B (en) * | 2008-03-31 | 2011-03-23 | 山东新北洋信息技术股份有限公司 | Gray level print control method and device |
| WO2009121236A1 (en) * | 2008-03-31 | 2009-10-08 | 山东新北洋信息技术股份有限公司 | A grayscale printing control method, and an apparatus thereof |
| CN107571634A (en) * | 2016-07-05 | 2018-01-12 | 富士通电子零件有限公司 | Thermal printer |
| JP2018047641A (en) * | 2016-09-23 | 2018-03-29 | カシオ計算機株式会社 | Printer, control method and program of printer |
| JP2019181819A (en) * | 2018-04-11 | 2019-10-24 | 東芝テック株式会社 | Thermal printer |
| CN110588180A (en) * | 2018-06-12 | 2019-12-20 | 佳能株式会社 | Image forming apparatus and control method thereof |
| US10915036B2 (en) | 2018-06-12 | 2021-02-09 | Canon Kabushiki Kaisha | Image forming apparatus and method of controlling same |
| CN110588180B (en) * | 2018-06-12 | 2022-03-29 | 佳能株式会社 | Image forming apparatus and control method thereof |
| CN112339442A (en) * | 2020-10-13 | 2021-02-09 | 重庆品胜科技有限公司 | Printing method and printer |
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