CN103738056B - A kind of large-size thermal color printer - Google Patents

A kind of large-size thermal color printer Download PDF

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Publication number
CN103738056B
CN103738056B CN201310464495.9A CN201310464495A CN103738056B CN 103738056 B CN103738056 B CN 103738056B CN 201310464495 A CN201310464495 A CN 201310464495A CN 103738056 B CN103738056 B CN 103738056B
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China
Prior art keywords
colour band
roll shaft
printing
print
printhead
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CN201310464495.9A
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Chinese (zh)
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CN103738056A (en
Inventor
高本强
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曲阜市玉樵夫科技有限公司
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Priority to CN201310464495.9A priority Critical patent/CN103738056B/en
Publication of CN103738056A publication Critical patent/CN103738056A/en
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Abstract

The invention discloses a kind of large-size thermal color printer, comprise frame, be parallel to each other and rack-mountedly put medium roll shaft, preposition identical tension assembly, rearmounted constant pressure assembly, and overlap the printing mechanism that print components are formed and the colour band conveying mechanism be made up of at least three pairs of colour band assemblies by least three, the present invention adopts the printing mechanism of lower parallel relation, can be guaranteed the conveying of print media identical tension constant speed thus be prevented print media fold and skidding simultaneously by preposition identical tension assembly and rearmounted constant pressure assembly; Governor motion additionally by printhead flatness and levelness can guarantee that stable contact the between printhead with rubber roll guarantees print quality, finally achieves the printing of large scale colour description image.

Description

A kind of large-size thermal color printer

Technical field

The invention belongs to scroll printer technical field, particularly relate to the accurate thermal printer of large scale description level.

Background technology

Current description field is mostly inkjet printing, print speed is very low, for a long time could be air-dry after a lot of ink printed, shower nozzle is easy to blocking, and printer maintenance bothers, and improving productivity does not get on, and weatherability is poor, a lot of printout all needs peritonaeum operation, and not only the production process time is long, and price is higher.In the prior art in temperature-sensitive field, the operation principle of thermal printer has two kinds: one uses heat-sensitive paper, thermal printing head heating in print procedure, heat conduction is on heat-sensitive paper, due to heat-sensitive paper be heated display word and pattern out, be applicable to postal service, fax, retail business etc. and namely beat field namely, but because the word on heat-sensitive paper and pattern easily fade by environment and the impact of time, the holding time shorter application limiting it.

Another kind uses colour band, heat also passes on colour band by thermal printing head heating in print procedure, the thermal transfer ink layer of colour band finishing coat is heated and is transferred on print media, can printing character and pattern on the print medium, due to the thermal transfer ink layer rub resistance on print media, corrosion-resistant, heat-resisting, cold-resistant, make the holding time of these words and pattern relatively long, Application comparison is extensive, and owing to employing colour band medium, print media can use plain paper, adhesive sticker series, thin polymer film etc.

But, adopt at present colour band to carry out printing because precision reason also cannot the complicated coloured image as description image of precise Printing, usually can only be used for the printing of simple pattern, as bar code printing, train ticket printing, luggage check printing etc.In addition for description image domains, stamp with the size is usually comparatively large, and wide is 1.5 meters, and length can reach tens meters even longer, and make to print accumulated error larger, therefore existing ribbon printer cannot meet technical requirement far away.

Summary of the invention

Goal of the invention: for above-mentioned existing Problems existing and deficiency, the object of this invention is to provide a kind of large-size thermal color printer, can be printed the image of large scale description image level by this equipment.

Technical scheme: for achieving the above object, the present invention is by the following technical solutions: a kind of large-size thermal color printer, comprise frame, be parallel to each other and rack-mountedly put medium roll shaft, preposition identical tension assembly, rearmounted constant pressure assembly, and overlap the printing mechanism that print components are formed and the colour band conveying mechanism be made up of at least three pairs of colour band assemblies by least three, wherein: in described printing mechanism, each print components is parallel to each other and the setting of upper bottom, often overlap print components to comprise rubber roll and be fixed on the printhead in rotating shaft, printhead can be close to rubber roll and print through print media between the two under the drive of rotating shaft, described medium roll shaft of putting is for broadcasting print media, colour band assembly in described colour band conveying mechanism comprises to be put colour band roll shaft and receives colour band roll shaft, and colour band, from putting after colour band roll shaft enters corresponding print components, carries out rolling by receipts colour band roll shaft, described preposition identical tension assembly is located to be put between medium roll shaft and printing mechanism, guarantees constant tension when print media enters printing mechanism, after described rearmounted constant pressure assembly is located at printing mechanism, guarantee print media velocity-stabilization.

As preferably, described print components and colour band assembly are three covers and form CMY tri-look structure.

Further improvement, described receipts colour band roll shaft, the rotating shaft driving printhead to rotate and put medium roll shaft and be connected to torque motor, and driven by torque motor; The rubber roll of described orlop print components is connected with stepper motor or servomotor, and is driven by stepper motor or servomotor.

Further, described preposition identical tension assembly is put the axis of guide between medium roll shaft and printing mechanism and friction roller for being located at successively, described friction roller is colloid roller or knurling rolls, and print media, from after putting and walking around the axis of guide and friction roller successively after medium roll shaft is sent, enters printing mechanism.

Further, the driving mechanism that described rearmounted constant pressure assembly comprises compression roller and is connected with this compression roller, described compression roller is parallel with undermost rubber roll, and the corresponding compression roller place of described frame offers the shifting chute moved in parallel for compression roller; Described driving mechanism comprises movable frame block, block, transmission mechanism and torque motor, is provided with the push pedal of band spring in movable frame block, and the two ends of compression roller to be located at respectively in movable frame block and to be extruded by push pedal; Described torque motor can drive movable frame block to move in parallel stop location by transmission mechanism, and now compression roller near undermost rubber roll.

Further, printhead flatness adjusting part is also comprised.

Further, printhead Level-adjusting assembly is also comprised.

Further, described printhead forms by multiple printing single-slice dislocation is seamless spliced.Unacceptable when causing printing blank in colour description due to gap (even 0.1mm) will inevitably be had when printing monolithic splicing, therefore printing monolithic is designed to such as trapezoidal and then splicing thus to realize dislocation seamless spliced, avoids and print blank appearance.Further, described printhead is spliced by multiple printing monolithic non-dislocated, gap joint controls as one or two pixel (prints monolithic and is provided with heater wire, this heater wire is made up of multiple hot spot, each hot spot is 1 pixel) size, then carry out Homogenization Treatments with software thus make entire image show seamless effect.

Further, described in put medium roll shaft, put colour band roll shaft and receive in frame corresponding to colour band roll shaft two ends and be respectively equipped with supporting module, described supporting module is provided with the groove for support roll shaft, and slot opening is arranged obliquely outwardly.

Further, cooling water circulation passage is provided with in described printhead.

Beneficial effect: compared with prior art, the present invention has the following advantages: the present invention adopts the printing mechanism of lower parallel relation, can be guaranteed the conveying of print media identical tension constant speed thus be prevented print media fold and skidding simultaneously by preposition identical tension assembly and rearmounted constant pressure assembly; Governor motion additionally by printhead flatness and levelness can guarantee that stable contact the between printhead with rubber roll guarantees print quality, finally achieves the printing of large scale colour description image.

Accompanying drawing explanation

Fig. 1 is the structural representation of large-size thermal color printer of the present invention;

Fig. 2 is the side structure schematic diagram of large-size thermal color printer of the present invention;

Fig. 3 is the schematic diagram of rearmounted constant pressure assembly of the present invention.

Wherein, frame 10, put medium roll shaft 20, preposition identical tension assembly 30, rearmounted constant pressure assembly 40, print components 50, colour band assembly 60, receive medium roll shaft 70, print media 80, colour band 90; Printhead 51, rubber roll 52, put colour band roll shaft 61, receive colour band roll shaft 62, the axis of guide 31, friction roller 32, compression roller 41, movable frame block 42, transmission mechanism 43, torque motor 44.

Detailed description of the invention

Below in conjunction with the drawings and specific embodiments, illustrate the present invention further, these embodiments should be understood only be not used in for illustration of the present invention and limit the scope of the invention, after having read the present invention, the amendment of those skilled in the art to the various equivalent form of value of the present invention has all fallen within the application's claims limited range.

As figure shown in, a kind of large-size thermal color printer, comprise frame, and be parallel to each other to be arranged on this frame puts medium roll shaft, preposition identical tension assembly, rearmounted constant pressure assembly, printing mechanism and colour band conveying mechanism, wherein printing mechanism comprises three cover print components, corresponding colour band conveying mechanism also comprises three cover colour band assemblies, thus forms CMY tri-look structure, namely realizes random color by blue or green, pinkish red, Huang Sanse and prints.It should be noted that can there be print components and the colour band assembly of more covers in reality, more color is provided, such as, can also increase black print assembly and black bars assembly.

In printing mechanism, each print components is parallel to each other and is located in frame in upper-lower position, be preferably horizontally disposed with in the present embodiment and each print components on same vertical plane, also can tilt or vertically place in reality; Colour band assembly in colour band conveying mechanism coupling corresponding with print components.Often overlap print components include rubber roll, rotating shaft and be arranged on printhead in rotating shaft, rotating shaft is connected with motor and can be pressed on rubber roll by printhead driven rotary; Simultaneously corresponding colour band assembly comprises to be put colour band roll shaft and receives colour band roll shaft, and ribbon spool is placed in put on colour band roll shaft and broadcasts, and carries out rolling at receipts colour band roll shaft; Print media and colour band together move in ground floor print components between printhead and rubber roll, and after printhead prints colour band heating, print media enters the printing mechanism of lower one deck, and the colour band recovery after transfer printing is wrapped on receipts colour band roll shaft.In said process, the rubber roll in undermost print components connects motor stepper motor or print media is steadily pulled out by the frictional force between print media as driving shaft by servomotor.In the present embodiment, adopt CMY tri-look, therefore print media is successively through aforementioned three cover print components, finally forms colored description image on the print medium.How to guarantee flatness when print media transmits, constant-tension in actual print procedure and avoid skidding and the delay of print media, particularly important.Below be specifically described:

Print media must guarantee certain identical tension and stable speed when carrying and printing, in this device, receive colour band roll shaft, drive printhead rotating shaft and put medium roll shaft and be all connected motor and carry out drivings rotation, this is because when adopting driven by motor, even if be driven after parts have run and turn to precalculated position, still can continue normal work to carry out exerting a force and there will not be burning machine fault, thus there is certain tension force and there will not be relaxation when can guarantee that print media and colour band run.

In addition, the object that the present invention arranged preposition identical tension assembly before printing mechanism is exactly guarantee the stable tension of print media, because put medium roll shaft for laying print media volume, but along with printing is carried out, it is increasing that print media reduces power print media coil diameter being reduced gradually cause to be pulled out by print media gradually, print media fold is easily caused even skidding to occur, this problem is at simple bar code printing, train ticket prints, also not serious in the image printing that luggage check prints, but in large scale description image, just seem particularly serious, inventor through repeatedly grope just find, and take preposition identical tension assembly to overcome.The preposition identical tension assembly of the present embodiment is be located at successively to put the axis of guide between medium roll shaft and printing mechanism and friction roller, described friction roller is colloid roller (or knurling rolls), print media from after putting and walking around the axis of guide and friction roller successively after medium roll shaft is sent, then enters printing mechanism; In the process, the axis of guide is driven shaft, and friction roller can connect a motor as assist motor according to the tractive force that the rubber roll of orlop print components provides, thus by guaranteeing that the print media before entering printing mechanism is constant tension force all the time by such cushioning effect and assist motor.

Simultaneously, we also arrange rearmounted constant pressure assembly at the tail end of printing mechanism, the driving mechanism that it comprises compression roller and is connected with this compression roller, described compression roller and undermost rubber roll be arranged in parallel, and offer at the corresponding compression roller place of frame the shifting chute moved in parallel for compression roller, driving mechanism then comprises movable frame block, block, transmission mechanism and motor, the push pedal of band spring is set in movable frame block, the two ends of compression roller to be located at respectively in movable frame block and to be installed by push pedal extruding, motor then can drive movable frame block to move in parallel the position of block along the shifting chute in frame by transmission mechanism, and now compression roller extrudes near undermost rubber roll and its formation, fixed value by this device movable frame block displacement, the deformation quantity of the spring be now connected with push pedal is fixed value, the active force of push pedal to compression roller is exactly constant, therefore the extruding force between compression roller and orlop rubber roll is constant, therefore make the frictional force between orlop rubber roll and print media constant and stable provide constant tractive force to print media, avoid fold and the skidding of print media.Another one reason is because motor is comparatively large by the variable effect of environment temperature and input voltage, makes the power output of motor unstable, adopts so rearmounted constant pressure assembly just can overcome, and avoids fold or skidding effect diagram as print quality.

As preferably, above-mentioned transmission mechanism can be rack gear, rocking-arm driving mechanism, synchronous belt drive mechanism or engaged gears transmission mechanism etc.It should be noted that any transmission mechanism that movable frame block can be driven to move in parallel is all feasible, belong to protection scope of the present invention.

Because printer size of the present invention is comparatively large, existing single print module size is less, is spliced to form large-sized printhead by multiple print module.The present invention adopts multiple print module to adopt the mode of dislocation or non-dislocated splicing, and namely form Wedge-type dislocation splicing between adjacent two print modules, there is a small amount of coincidence stitching portion, coincide point can be eliminated thus reach seamless spliced by the process of software.If adopt non-dislocated splicing, as long as ensure that the size of piece is just in time that one or two pixel (prints monolithic and is provided with heater wire, this heater wire is made up of multiple hot spot, each hot spot is 1 pixel) size, then carry out Homogenization Treatments by software thus also can reach seamless spliced object.We arrange cool cycles passage in printhead in addition, and when making to print, the heating silk thread of print module can cool rapidly the colour band transfer printing avoiding affecting print point surrounding pixel point.

In the present invention, putting medium roll shaft, putting colour band roll shaft and receiving ribbon roll beam warp often needs to change, conveniently change the supporting module therefore arranged on the position that frame is corresponding for support roll shaft, it is groove outwardly obliquely that this supporting module is provided with opening, and the two ends of roll shaft are placed in this groove.

Preferably, described preposition identical tension assembly can also be other modes, the motor that such as dancer structure, multiple transmission shaft structure, gravity-roller structure and power output are controlled.Such as dancer structure is then arrange dancer before printing mechanism, this dancer is the tension force that upper and lower both sides connection elastomeric element can adjust that upper-lower position buffering enters the print media of printing mechanism in time, the parts connected as the upper and lower both sides of preferred dancer can be spring or shell fragment, when putting print media volume on medium roll shaft and reducing gradually to make frictional force increase, dancer automatically can adjust upper-lower position thus stablize the tension force of print media.As shown in the figure, when print media volume reduces gradually, dancer slowly can float and cushion the change of tension force.Or be putting the gravity-roller that to be arranged in parallel above media roll, this gravity-roller is utilized self gravitation equally and is pressed on by floating installation and puts on medium roll shaft, makes print media and put frictional force between medium roll shaft constant as much as possible thus ensure the identical tension of print media.

Claims (9)

1. a large-size thermal color printer, it is characterized in that: comprise frame, be parallel to each other and rack-mountedly put medium roll shaft, preposition identical tension assembly, rearmounted constant pressure assembly, and overlap the printing mechanism that print components are formed and the colour band conveying mechanism be made up of at least three pairs of colour band assemblies by least three, wherein:
In described printing mechanism, each print components is parallel to each other and the setting of upper bottom, and often overlap print components and comprise rubber roll and be fixed on the printhead in rotating shaft, printhead can be close to rubber roll and print through print media between the two under the drive of rotating shaft; Described medium roll shaft of putting is for broadcasting print media;
Colour band assembly in described colour band conveying mechanism comprises to be put colour band roll shaft and receives colour band roll shaft, and colour band, from putting after colour band roll shaft enters corresponding print components, carries out rolling by receipts colour band roll shaft;
Described preposition identical tension assembly is located to be put between medium roll shaft and printing mechanism, guarantees constant tension when print media enters printing mechanism; After described rearmounted constant pressure assembly is located at printing mechanism, guarantee print media velocity-stabilization;
The driving mechanism that described rearmounted constant pressure assembly comprises compression roller and is connected with this compression roller, described compression roller is parallel with undermost rubber roll, and the corresponding compression roller place of described frame offers the shifting chute moved in parallel for compression roller; Described driving mechanism comprises movable frame block, block, transmission mechanism and torque motor, is provided with the push pedal of band spring in movable frame block, and the two ends of compression roller to be located at respectively in movable frame block and to be extruded by push pedal; Described torque motor can drive movable frame block to move in parallel stop location by transmission mechanism, and now compression roller near undermost rubber roll.
2. large-size thermal color printer according to claim 1, is characterized in that: described print components and colour band assembly are three covers and form CMY tri-look structure.
3. large-size thermal color printer according to claim 2, is characterized in that: described receipts colour band roll shaft, the rotating shaft driving printhead to rotate and put medium roll shaft and be connected to torque motor, and is driven by torque motor; The rubber roll of described orlop print components is connected with stepper motor or servomotor, and is driven by stepper motor or servomotor.
4. large-size thermal color printer according to claim 3, it is characterized in that: described preposition identical tension assembly is put the axis of guide between medium roll shaft and printing mechanism and friction roller for being located at successively, described friction roller is colloid roller or knurling rolls, print media, from after putting and walking around the axis of guide and friction roller successively after medium roll shaft is sent, enters printing mechanism.
5. large-size thermal color printer according to claim 3, is characterized in that: also comprise printhead flatness adjusting part.
6. large-size thermal color printer according to claim 3, is characterized in that: also comprise printhead Level-adjusting assembly.
7. large-size thermal color printer according to claim 3, is characterized in that: described printhead forms by multiple printing monolithic is seamless spliced.
8. large-size thermal color printer according to claim 3, it is characterized in that: described in put medium roll shaft, put colour band roll shaft and receive in frame corresponding to colour band roll shaft two ends and be respectively equipped with supporting module, described supporting module is provided with the groove for support roll shaft, and slot opening is arranged obliquely outwardly.
9. large-size thermal color printer according to claim 3, is characterized in that: be provided with cool cycles passage in described printhead.
CN201310464495.9A 2013-09-30 2013-09-30 A kind of large-size thermal color printer CN103738056B (en)

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Publication number Priority date Publication date Assignee Title
CN106945413B (en) * 2017-03-17 2019-10-11 厦门汉印电子技术有限公司 It is a kind of can flexible modulation color printer
CN109495023A (en) * 2018-11-28 2019-03-19 河南奥德利数码科技有限公司 A kind of Motor torque regulation and control system of scroll printer
CN109605945A (en) * 2019-01-16 2019-04-12 曲阜市玉樵夫科技有限公司 Engineering blueprint print unit, device and method
CN109823060A (en) * 2019-03-22 2019-05-31 山东海邦达机电科技有限公司 A kind of printing equipment and single double face printing method using the printing equipment

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JPH04221647A (en) * 1990-12-21 1992-08-12 Hitachi Maxell Ltd Printer for deposite passbook entry
US5589868A (en) * 1995-02-21 1996-12-31 Atlantek Inc. Multi-head wide-format thermal plotter
CN1295928A (en) * 1999-11-12 2001-05-23 明碁电脑股份有限公司 Color thermaprinter
CN102020128A (en) * 2009-09-15 2011-04-20 株式会社理光 Sheet feeder and image forming apparatus
CN203093332U (en) * 2013-01-31 2013-07-31 高本强 Color thermal printer
CN203666133U (en) * 2013-09-30 2014-06-25 曲阜市玉樵夫科技有限公司 Large-sized temperature-sensitive color printer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04221647A (en) * 1990-12-21 1992-08-12 Hitachi Maxell Ltd Printer for deposite passbook entry
US5589868A (en) * 1995-02-21 1996-12-31 Atlantek Inc. Multi-head wide-format thermal plotter
CN1295928A (en) * 1999-11-12 2001-05-23 明碁电脑股份有限公司 Color thermaprinter
CN102020128A (en) * 2009-09-15 2011-04-20 株式会社理光 Sheet feeder and image forming apparatus
CN203093332U (en) * 2013-01-31 2013-07-31 高本强 Color thermal printer
CN203666133U (en) * 2013-09-30 2014-06-25 曲阜市玉樵夫科技有限公司 Large-sized temperature-sensitive color printer

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