CN107234878B - A kind of driving device and its thermal printer of print head - Google Patents
A kind of driving device and its thermal printer of print head Download PDFInfo
- Publication number
- CN107234878B CN107234878B CN201710625834.5A CN201710625834A CN107234878B CN 107234878 B CN107234878 B CN 107234878B CN 201710625834 A CN201710625834 A CN 201710625834A CN 107234878 B CN107234878 B CN 107234878B
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- Prior art keywords
- print head
- actuator
- driving device
- output shaft
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- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 20
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 22
- 229910052799 carbon Inorganic materials 0.000 claims description 22
- 238000007639 printing Methods 0.000 claims description 12
- 238000010009 beating Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 230000000994 depressogenic effect Effects 0.000 description 3
- 238000001514 detection method Methods 0.000 description 2
- 230000005611 electricity Effects 0.000 description 2
- 210000004209 hair Anatomy 0.000 description 2
- 238000009434 installation Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012512 characterization method Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 238000004806 packaging method and process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000010023 transfer printing Methods 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
- 238000004804 winding Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/315—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material
- B41J2/32—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by selective application of heat to a heat sensitive printing or impression-transfer material using thermal heads
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J23/00—Power drives for actions or mechanisms
Abstract
The present invention provides a kind of driving device of print head, the driving device includes: the first actuator, is located on printer pedestal, and first actuator has the first output shaft；Connecting bracket is drivingly connected with first output shaft, and position relatively to be printed moves back and forth；Second actuator has the second output shaft and the first cylinder body, and second output shaft is fixedly connected with the connecting bracket, and second output shaft is flexible so that first cylinder body moves back and forth between position to be printed and print position；Print head has the motion state mobile with first cylinder body.The present invention drives the level-one of print head to press to position to be printed by the first actuator, drives the second level of print head to press to print position by the second actuator.So that the two-stage pushing of print head is driven by two actuators respectively, enable print head accurately in extreme higher position, position to be printed, print position three different position exact residences.
Description
Technical field
The present invention relates to printer fields, in particular to the driving device and its thermal printer of a kind of print head.
Background technique
Currently, thermal transfer technology is by special carbon ribbon, using print head by the carbon dust coating on carbon ribbon by heating
Mode, be transferred in paper or other kinds of material, selected since the coated substance on carbon ribbon can according to need, produced
Raw stronger adhesive force, in addition the selection of print media, more can guarantee the writing printed not by external influence.Heat turns
Stamp equipment is printed, in different periods, print head need to rest on highest when three different positions of short transverse, i.e. installation carbon ribbon
Position, print position when waiting print position and printing after the completion of startup self-detection.When printer is in off-mode, printing
Head is in extreme higher position, so that carbon ribbon can pass through below print head, facilitates the loading and taking-up of carbon ribbon.Startup self-detection is completed
Afterwards, print head is depressed into waiting print position.When receiving print signal, print head is depressed into print position, so that winding
Print head surface heat transfer printing carbon tape and bottom print record medium with certain pressure contact, while controlling printing hair
Heat makes the layer of ink of carbon ribbon sites of heat generation be transferred to beneath recording medium and forms print pattern, and print head is raised to after the completion of printing
Print position is waited, recording medium is moved to next print position.Existing print head is transported by motor lead agency along track
It is dynamic, in midway when power loss, cause print head that can not be returned to initial position, and then carbon ribbon is caused to take out difficult problem.And electricity
The intrinsic physical characteristic of machine, so that pressure when printing cannot be adjusted.And pushed by a motor control two-stage, to motor
Required precision is high, virtually also increases the cost of equipment.
Summary of the invention
The present invention provides a kind of driving devices of print head, it is intended to improve existing print head two-stage and push using motor appearance
The problem of the problem of can not easily resetting in power loss and force of impression can not adjust.
The present invention provides a kind of thermal printers, it is intended to improve existing thermal printer and apply in factory in power loss feelings
The problem of can not being resetted under condition, carbon ribbon taking-up difficulty, and then influencing production.
The present invention is implemented as follows:
A kind of driving device of print head, the driving device include:
First actuator is located on printer pedestal, and first actuator has the first output shaft；
Connecting bracket is drivingly connected with first output shaft, and position relatively to be printed moves back and forth；
Second actuator, has the second output shaft and the first cylinder body, and second output shaft is fixed with the connecting bracket
Connection, second output shaft are flexible so that first cylinder body moves back and forth between position to be printed and print position；It beats
Printing head has the motion state mobile with first cylinder body.
Further, in preferred embodiments of the present invention, the driving device further includes mobile with first cylinder body
Fixation bracket, print head is located on the fixed bracket.
Further, in preferred embodiments of the present invention, the fixed bracket passes through guidance set and printer pedestal
Connection, and opposite print position moves back and forth under the guiding of guidance set.
Further, in preferred embodiments of the present invention, including guidance set described in two groups, guidance set described in two groups
It is parallel to each other；First actuator and second actuator use air cylinder structure.
Further, in preferred embodiments of the present invention, the guidance set includes the cunning being located on printer pedestal
Rail and the sliding block that can be moved along the sliding rail, the fixed bracket are fixed on the slide block.
Further, in preferred embodiments of the present invention, the guidance set includes the circle being located on printer pedestal
Axis of a cylinder and the linear bearing that can be moved along the cylindrical shaft, the fixed bracket are fixed on the linear bearing.
Further, in preferred embodiments of the present invention, the connecting bracket includes main part, and is respectively arranged on institute
The first connecting portion and second connecting portion at main part both ends are stated, and the first connecting portion is located at the second connecting portion
The two sides of the main part；First actuator is connect with the first connecting portion, second actuator and described second
Interconnecting piece connection.
Further, in preferred embodiments of the present invention, the first connecting portion, second connecting portion respectively with the master
Body portion is mutually perpendicular to.
A kind of thermal printer further includes printer pedestal, print head and rubber roller using above-mentioned driving device, described
Driving device is located on the printer pedestal, and recording medium passes through between print head and rubber roller, and the print head is located at institute
In driving device, carbon ribbon is pressed in the recording medium by the print head.
Further, in preferred embodiments of the present invention, the print head by first actuator move to
Print position, and print position is moved to by second actuator, the relatively described print head moving direction of the rubber roller hangs down
Directly, the print head is contacted in rubber roller pros with the rubber roller line.
The beneficial effects of the present invention are: the driving device for the print head that the present invention obtains by above-mentioned design, in use, will
Two actuators are connected by connecting bracket, and print head is connect with the second actuator, drive print head by the first actuator
Level-one presses to position to be printed, drives the second level of print head to press to print position by the second actuator.So that print head
Two-stage pushing driven respectively by two actuators, enable print head accurately extreme higher position, position to be printed,
Print position three different position exact residences.The adjustment function of force of impression is also achieved, user can be situated between according to printing
The adjustment of the progress convenient pressure such as matter difference, print speed difference.Preferably, the first actuator and the second actuator use cylinder
Structure is solved existing realized using motor and pushed, causes print head that can not reset to extreme higher position, carbon ribbon in power loss
Take out difficult problem.
Detailed description of the invention
It, below will be to use required in embodiment in order to illustrate more clearly of the technical solution of embodiment of the present invention
Attached drawing be briefly described, it should be understood that the following drawings illustrates only certain embodiments of the present invention, therefore is not to be seen as
It is the restriction to range, it for those of ordinary skill in the art, without creative efforts, can be with root
Other relevant attached drawings are obtained according to these attached drawings.
Fig. 1 is the embodiment of the present invention, structural schematic diagram of the thermal printer under the first visual angle；
Fig. 2 is the embodiment of the present invention, structural schematic diagram of the thermal printer under the second visual angle；
Fig. 3 is the embodiment of the present invention, schematic diagram of the print head at extreme higher position in thermal printer；
Fig. 4 is the embodiment of the present invention, schematic diagram of the print head at position to be printed in thermal printer；
Fig. 5 is the embodiment of the present invention, schematic diagram of the print head in print position in thermal printer；
Icon: driving device 100；Printer pedestal 200；Rubber roller 300；Carbon ribbon 400；Recording medium 500；
First actuator 1；Connecting bracket 2；Second actuator 3；Fixed bracket 4；Guidance set 5；Print head 6；First is defeated
Shaft 11；First connecting portion 23；Main part 22；Second connecting portion 21；Second output shaft 31；First cylinder body 32；Sliding block 51；Sliding rail
52。
Specific embodiment
To keep the purposes, technical schemes and advantages of embodiment of the present invention clearer, implement below in conjunction with the present invention
The technical solution in embodiment of the present invention is clearly and completely described in attached drawing in mode, it is clear that described reality
The mode of applying is some embodiments of the invention, rather than whole embodiments.Based on the embodiment in the present invention, ability
Domain those of ordinary skill every other embodiment obtained without creative efforts, belongs to the present invention
The range of protection.Therefore, the detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit below and is wanted
The scope of the present invention of protection is sought, but is merely representative of selected embodiment of the invention.Based on the embodiment in the present invention,
Every other embodiment obtained by those of ordinary skill in the art without making creative efforts belongs to this
Invent the range of protection.
In the description of the present invention, it is to be understood that, term " on ", "lower", "front", "rear", "vertical", "horizontal",
"top", "bottom", etc. instructions orientation or positional relationship be based on the orientation or positional relationship shown in the drawings, be merely for convenience of retouching
It states the present invention and simplifies description, rather than the equipment of indication or suggestion meaning or element must have a particular orientation, with specific
Orientation construction and operation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
In the present invention unless specifically defined or limited otherwise, fisrt feature second feature "upper" or "lower"
It may include that the first and second features directly contact, also may include that the first and second features are not direct contacts but pass through it
Between other characterisation contact.Moreover, fisrt feature includes the first spy above the second feature " above ", " above " and " above "
Sign is right above second feature and oblique upper, or is merely representative of first feature horizontal height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " following " include that fisrt feature is directly below and diagonally below the second feature, or is merely representative of
First feature horizontal height is less than second feature.
Embodiment 1:
Referring to figs. 1 to 5, the driving device 100 includes the first actuator 1, connecting bracket 2 and the second actuator
3, first actuator 1 is located on printer pedestal 200, and first actuator 1 has the first output shaft 11.The connection
Bracket 2 and first output shaft 11 are drivingly connected, and position relatively to be printed moves back and forth.Second actuator 3 has
Second output shaft 31 and the first cylinder body 32, second output shaft 31 are fixedly connected with the connecting bracket 2, second output
Axis 31 is flexible so that first cylinder body 32 moves back and forth between position to be printed and print position；Print head 6 has with institute
State the mobile motion state of the first cylinder body 32.
By connecting two actuators with connecting bracket 2, print head 6 is connect the present invention with the second actuator 3, passes through
The level-one of one actuator 1 driving print head 6 presses to position to be printed, under the second level that print head 6 is driven by the second actuator 3
It is depressed into print position.So that the two-stage pushing of print head 6 is driven by two actuators respectively, enable print head 6 quasi-
It is true in extreme higher position, position to be printed, print position three different position exact residences.Also achieve the tune of force of impression
Whole function, user can carry out the adjustment of convenient pressure according to print media difference, print speed difference etc..The tune of force of impression
Integration reason, is directly related to the clarity of printing.Force of impression is too small, prints unclear；Force of impression is too big, then is easy to influence
Print head longevity.Under conditions of meeting printing clarity, the force of impression smaller service life for being able to extend print head.
Preferably, first actuator 1 uses air cylinder structure with second actuator 3.It solves existing using electricity
Machine, which is realized, to be pushed, and causes print head 6 that can not reset to extreme higher position in power loss, carbon ribbon 400 takes out difficult problem.?
It often needs to print various labels etc. using printer in factory's packaging, is designed with air-channel system in production plant substantially and meets fortune
With the demand of cylinder.By using air cylinder structure, the reset of print head 6 on the one hand can be realized in power loss, avoid beating
Print head 6 can not reset the long period and be pressed in carbon ribbon 400 and recording medium 500, damage carbon ribbon 400 and recording medium 500.Separately
On the one hand, it is printed by controlling the adjustable print head 6 of gas pressure value inputted to the first actuator 1 and the second actuator 3
When pressure.
Preferably, the driving device 100 further includes the fixation bracket 4 mobile with first cylinder body 32, and print head 6 is set
On the fixed bracket 4.The connection relationship that the first cylinder body 32 and print head 6 is established by fixed bracket 4, so that print head 6
It is more flexible with the link position of the second actuator 3.
Preferably, the fixed bracket 4 is connect by guidance set 5 with printer pedestal 200, and in guidance set 5
The lower opposite print position of guiding moves back and forth.The direction of motion of print head 6 is limited by guidance set 5, for example, limitation printing
First 6 linear movement in the vertical direction avoids print head 6 in print procedure along 300 axial direction of rubber roller or recording medium 500
Moving direction movement, cause carbon ribbon 400 the frictional force the effects of under there is the defects of fold, and then influence print quality.It is more excellent
It selects, including guidance set 5 described in two groups, guidance set 5 described in two groups are parallel to each other；It further avoids print head 6 and generates water
Plane intrinsic deflection also avoids the deflection of print head 6 in the vertical direction, avoids print head 6 from generating unnecessary movement and causes to beat
Print the bad problem of quality.
Preferably, the guidance set 5 includes the sliding rail 52 being located on printer pedestal 200 and can be along the sliding rail 52
Mobile sliding block 51, the fixed bracket 4 are fixed on the sliding block 51.In addition, guidance set 5 can also be other structures,
For example, the guidance set 5 includes the cylindrical shaft being located on printer pedestal 200 and can move along the cylindrical shaft linear
Bearing, the fixed bracket 4 are fixed on the linear bearing.Guide rail structure and linear bearing structure in embodiment are hairs
Bright people can play stable guiding and with optimization print quality with what its working experience and professional knowledge were found in the present invention
Two groups of guidance sets 5.
Preferably, the connecting bracket 2 includes main part 22, and is respectively arranged on the first of 22 both ends of main part and connects
Socket part 23 and second connecting portion 21, and the first connecting portion 23 and the second connecting portion 21 are located at the main part 22
Two sides；First actuator 1 is connect with the first connecting portion 23, second actuator 3 and the second connecting portion
21 connections.First output shaft 11, the second output shaft 31 are connected between connection respectively, compared to by the cylinder body of actuator and connection
Bracket 2 can simplify the structure of connecting bracket 2, so that printer is compact-sized.Preferably, the first connecting portion 23,
Two interconnecting pieces 21 are mutually perpendicular to the main part 22 respectively.So that the first output shaft 11 and the second output shaft 31 are in vertical direction
It is upper flexible.
Embodiment 2:
Referring to figs. 1 to 5, a kind of thermal printer, using the driving device 100 in embodiment 1, printer is also wrapped
Printer pedestal 200, print head 6 and rubber roller 300 are included, the driving device 100 is located on the printer pedestal 200, record
Medium 500 passes through between print head 6 and rubber roller 300, and the print head 6 is located in institute's driving device 100, the print head 6
Carbon ribbon 400 is pressed in the recording medium 500.
The print head 6 moves to position to be printed by first actuator 1, and passes through second actuator 3
Move to print position, relatively described 6 moving direction of print head of the rubber roller 300 is vertical, the print head 6 rubber roller 300 just
It is square to be contacted with 300 line of rubber roller.Print head 6 is contacted with the rubber roller 300 i.e. on the bus of 300 top of rubber roller, is avoided
Print head 6 is to the pressure of carbon ribbon 400, so that carbon ribbon 400 or recording medium 500 generate upstream or the movement in downstream.
The foregoing is merely the preferred embodiment of the present invention, are not intended to restrict the invention, for this field
For technical staff, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any
Modification, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (9)
1. a kind of driving device of print head, to realize print head along vertical direction between extreme higher position and print position
Movement, which is characterized in that the driving device includes:
First actuator is located on printer pedestal, and first actuator has the first output shaft；
Connecting bracket is drivingly connected with first output shaft；
Second actuator has the second output shaft and the first cylinder body, and second output shaft is fixedly connected with the connecting bracket,
Second output shaft is flexible so that first cylinder body is along vertical direction under from position to be printed to the second level of print position
Pressure movement；Print head has the motion state mobile with first cylinder body；
The connecting bracket includes main part, and is respectively arranged on the first connecting portion at the main part both ends and connect with second
Portion, and the first connecting portion and the second connecting portion are located at the two sides of the main part；First actuator with
The first connecting portion connection, second actuator are connect with the second connecting portion；Described in the first actuator driving
Connecting bracket movement, so that print head, which is driven, realizes that the level-one from extreme higher position to position to be printed pushes along vertical direction
Movement.
2. the driving device of print head according to claim 1, which is characterized in that the driving device further includes with described
The mobile fixation bracket of first cylinder body, print head are located on the fixed bracket.
3. the driving device of print head according to claim 2, which is characterized in that the fixed bracket passes through guidance set
It is connect with printer pedestal, and opposite print position moves back and forth under the guiding of guidance set.
4. the driving device of print head according to claim 3, which is characterized in that including guidance set described in two groups, two
The group guidance set is parallel to each other；First actuator and second actuator use air cylinder structure.
5. the driving device of print head according to claim 3, which is characterized in that the guidance set includes being located at printing
Sliding rail on machine pedestal and the sliding block that can be moved along the sliding rail, the fixed bracket are fixed on the slide block.
6. the driving device of print head according to claim 3, which is characterized in that the guidance set includes being located at printing
Cylindrical shaft on machine pedestal and the linear bearing that can be moved along the cylindrical shaft, the fixed bracket are fixed on the linear axes
It holds.
7. the driving device of print head according to claim 1, which is characterized in that the first connecting portion, the second connection
Portion is mutually perpendicular to the main part respectively.
8. a kind of thermal printer, which is characterized in that further include beating using the driving device in claim 1 to 7 any one
Print machine pedestal, print head and rubber roller, the driving device are located on the printer pedestal, and recording medium is from print head and rubber roller
Between pass through, the print head is located in institute's driving device, and carbon ribbon is pressed in the recording medium by the print head.
9. thermal printer according to claim 8, which is characterized in that the print head is transported by first actuator
It moves to position to be printed, and print position is moved to by second actuator, the rubber roller is mobile relative to the print head
Direction is vertical, and the print head is contacted in rubber roller pros with the rubber roller line.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625834.5A CN107234878B (en) | 2017-07-27 | 2017-07-27 | A kind of driving device and its thermal printer of print head |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710625834.5A CN107234878B (en) | 2017-07-27 | 2017-07-27 | A kind of driving device and its thermal printer of print head |
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| Publication Number | Publication Date |
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| CN107234878A CN107234878A (en) | 2017-10-10 |
| CN107234878B true CN107234878B (en) | 2019-09-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710625834.5A Active CN107234878B (en) | 2017-07-27 | 2017-07-27 | A kind of driving device and its thermal printer of print head |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108248222B (en) * | 2018-01-09 | 2019-06-25 | 天津腾坤博硕科技有限公司 | Bar code generating is grown up to be a useful person |
| CN109049993A (en) * | 2018-08-06 | 2018-12-21 | 贝恩医疗设备(广州)有限公司 | A kind of puncture needle automatic printing point device |
| CN109203721B (en) * | 2018-08-13 | 2024-04-09 | 湖南鼎一致远科技发展有限公司 | Thermal transfer printer and vertical lifting structure of printing head thereof |
| CN109263298A (en) * | 2018-09-27 | 2019-01-25 | 厦门汉印电子技术有限公司 | The structure and print unit and printing device of accurate positionin thermal print head |
| CN109367245A (en) * | 2018-10-26 | 2019-02-22 | 湖南鼎致远科技发展有限公司 | A kind of paper feed precision control device and its thermal transfer printer |
| CN109532239B (en) * | 2018-10-29 | 2021-01-05 | 厦门汉印电子技术有限公司 | Printer segmented printing method and device and thermal printer |
| CN115027721A (en) * | 2022-06-13 | 2022-09-09 | 首钢京唐钢铁联合有限责任公司 | Screw-down mechanism |
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| CN1902054A (en) * | 2003-11-27 | 2007-01-24 | 迪默公司 | A method and apparatus adjusting the position of a printhead |
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|---|---|
| CN107234878A (en) | 2017-10-10 |
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