CN102896907B - Heat transfer printer and printing method thereof - Google Patents
Heat transfer printer and printing method thereof Download PDFInfo
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- CN102896907B CN102896907B CN201110216351.2A CN201110216351A CN102896907B CN 102896907 B CN102896907 B CN 102896907B CN 201110216351 A CN201110216351 A CN 201110216351A CN 102896907 B CN102896907 B CN 102896907B
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- printing
- roller
- curved rod
- printhead
- rubber roller
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Classifications
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- 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
- B41J2/325—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 by selective transfer of ink from ink carrier, e.g. from ink ribbon or sheet
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- 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
- B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
- B41J33/14—Ribbon-feed devices or mechanisms
- B41J33/38—Slow, e.g. "creep", feed mechanisms
- B41J33/388—Slow, e.g. "creep", feed mechanisms the ribbon being fed only when type impression takes place
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- 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
- B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
- B41J2202/30—Embodiments of or processes related to thermal heads
- B41J2202/31—Thermal printer with head or platen movable
Abstract
The invention discloses a heat transfer printer and a printing method thereof. The heat transfer printer comprises a printing mechanism, a thermal transfer ribbon mechanism, a conveying roller set and a switching device, wherein the printing mechanism has a printing and conveying status when a printing head and a printing rubber roll are in tangent fit and a separation status when the printing head and the printing rubber roll separate from each other. The thermal transfer ribbon mechanism comprises a pay-off shaft and a take-up shaft, and a thermal transfer ribbon passes between the printing head and the printing rubber roll from the pay-off shaft to be rewound on the take-up shaft. The conveying roller set is used for conveying printing paper has a printing paper conveying status when a first roller and a second roller are in tangent fit and a separation status when the first roller and the second roller separate from each other. When no information is printed, the switching device is used for switching the printing mechanism from the printing and conveying status to the separation status and switching the conveying roller set from the separation status and the printing paper conveying status. When no information is printed, not the thermal transfer ribbon but the printing paper is conveyed. Therefore, the thermal transfer ribbon is saved, and cost of using equipment is lowered.
Description
Technical field
The present invention relates to printer field, particularly relate to a kind of thermal transfer printer and Method of printing thereof.
Background technology
The structure of common thermal transfer printer as shown in Figure 1, comprises printing mechanism 1 ', carbon ribbon mechanism 2 ', and driving mechanism 3 ', and wherein printing mechanism 1 ' comprises the printhead 11 ' and printing rubber roller 12 ' that cooperatively interact; Carbon ribbon mechanism 2 ' comprises granting axle 21 ' and reclaims axle 22 ', and untapped carbon ribbon is delivered to after between printhead 11 ' and printing rubber roller 12 ' by providing axle 21 ', and backrush is wrapped in reclaims on axle 22 '; Drive motors 3 ' comprises the first motor 31 ', the second motor 32 ' and the 3rd motor 33 ', wherein, first motor 31 ' rotates for driving the printing rubber roller 12 ' of printing mechanism 1 ', and the second motor 32 ' and the 3rd motor 33 ' drive the granting axle 21 ' of carbon ribbon mechanism 2 ' respectively and reclaim axle 22 ' and rotate.
During printing, untapped carbon ribbon and printing paper to be printed pass between printhead 11 ' and printing rubber roller 12 ', the coat side of carbon ribbon and the surface contact of printing paper, the non-coat side of carbon ribbon contacts with printhead 11 ', first motor 31 ' of driving mechanism 3 ' drives printing rubber roller 12 ' to rotate, to printing mechanism 1 ' downstream fed printing sheet and carbon ribbon, second motor 32 ' and the 3rd motor 33 ' drive respectively to provide axle 21 ' and reclaim axle 22 ' and rotate, provide axle 21 ' and discharge carbon ribbon, reclaim the carbon ribbon that axle 22 ' recovery printing rubber roller 12 ' exports, simultaneously, control system carries out computer heating control to the heater element of printhead 11 ', printing is completed on the dye transfer in carbon ribbon coat side to printing paper.
Because print data comprises clear data and non-blank-white data, when printer is when printing clear data, printhead does not generate heat, while printing paper is carried to printing mechanism downstream, carbon ribbon is by synchronous transport, now, original carbon ribbon is exported by printing rubber roller 12 ' and is wrapped in and reclaims on axle 22 ', causes carbon ribbon to waste.
Summary of the invention
The object of the present invention is to provide a kind of thermal transfer printer with carbon ribbon saving function.The present invention also aims to the Method of printing that a kind of thermal transfer printer is provided, to save carbon ribbon.
For this reason, according to an aspect of the present invention, provide a kind of thermal transfer printer, comprise: printing mechanism, comprise print head assembly and printing rubber roller, wherein, print head assembly comprises the printhead be oppositely arranged with printing rubber roller, and printing mechanism has the released state that the tangent printing feed status that coordinates of printing rubber roller and printhead and printing rubber roller and printhead are separated; Carbon ribbon mechanism, comprises and provides axle and reclaim axle, wherein, carbon ribbon from providing axle, between printhead and printing rubber roller, backrush reclaiming on axle; Conveying roller group, comprises the first roller and the second roller, and wherein, conveying roller group has the released state that the tangent printing paper feed status that coordinates of the first roller and the second roller and the first roller and the second roller are separated; And switching device shifter, for making printing mechanism switch to released state by printing feed status when printing clear data, make conveying roller group switch to printing paper feed status by released state.
Further, above-mentioned print head assembly comprises the fixed head of the installation printhead be articulated in frame and the flexible member to fixed head bias voltage, and wherein, fixed head has the trend to the deflection of printing rubber roller direction.
Further, above-mentioned switching device shifter comprises: the first curved rod, around the axis oscillating of the first axle in frame, wherein, second roller of conveying roller group is connected with the first end of the first curved rod, first curved rod has the first turned position making the second roller and the tangent cooperation of the first roller and the second turned position that the second roller is separated with the first roller, second curved rod, around the axis oscillating of the second axle in frame, wherein, print head assembly also comprises the support sector abutted against with the first end of the second curved rod, second curved rod has its first end and compresses the 3rd turned position that support sector makes printhead be separated with printing rubber roller and make tangent the 4th turned position coordinated of printhead and printing rubber roller, and cam, have and abut with the second end of the first curved rod and the second end of the second curved rod the control wheel face coordinated, controlling wheel face is configured so that when the first curved rod is in the first turned position, second curved rod is in the 3rd turned position, and when the first curved rod is in the second turned position, second curved rod is in the 4th turned position.
Further, above-mentioned switching device shifter also comprise make the first curved rod return back to the second turned position the first elastic recovery element and make the second curved rod return back to the second elastic recovery element of the 3rd turned position.
Further, above-mentioned printing rubber roller is moveable relative to the position of print head assembly.
Further, above-mentioned switching device shifter comprises: the first curved rod, around the axis oscillating of the first axle in frame, wherein, second roller of conveying roller group is connected with the first end of the first curved rod, and the first curved rod has the 5th turned position making the second roller and the tangent cooperation of the first roller and the 6th turned position that the second roller is separated with the first roller; Second curved rod, around the axis oscillating of the second axle in frame, wherein, printing rubber roller is connected with the first end of the second curved rod, and the second curved rod has the 7th turned position that printing rubber roller is separated with printhead and makes tangent the 8th turned position coordinated of printing rubber roller and printhead; And cam, have and abut with the second end of the first curved rod and the second end of the second curved rod the control wheel face coordinated, wherein, control wheel face is configured so that when the first curved rod is in the 6th turned position, the second curved rod is in the 8th turned position, and when the first curved rod is in the 5th turned position, the second curved rod is in the 7th turned position.
Further, above-mentioned switching device shifter also comprise make the first curved rod return back to the 6th turned position the 3rd elastic recovery element and make the second curved rod return back to the 4th elastic recovery element of the 8th turned position.
Further, along printing paper throughput direction, conveying roller group is positioned at the upstream of printing mechanism, and the second roller and printing rubber roller are positioned at the same side of printing paper.
Further, above-mentioned switching device shifter comprises the first switching mechanism of printing mechanism being alternatively in print feed status or released state and makes conveying roller group alternatively be in the second switching mechanism of printing paper feed status and released state.
According to a further aspect in the invention, provide a kind of Method of printing of thermal transfer printer, comprise: in print procedure, when the print length of the clear data printed is greater than preseting length, the printhead of the printing mechanism of thermal transfer printer is separated with printing rubber roller, and utilize the conveying roller group of thermal transfer printer along printing paper throughput direction fed printing sheet, stop conveying carbon ribbon simultaneously.
Thermal transfer printer provided by the invention, when printing non-blank-white data, switching mechanism drives the printing rubber roller of printing mechanism to coordinate with printhead is tangent, the first roller of conveying roller group is driven to be separated with the second roller, by printing rubber roller fed printing sheet and used carbon ribbon, by the used carbon ribbon of recovery axle backrush; When printing clear data, switching mechanism drives the printing rubber roller of printing mechanism to be separated with printhead, drives the first roller of conveying roller group to coordinate with the second roller is tangent, and by conveying roller group fed printing sheet, and control recovery axle stops backrush carbon ribbon.By switching mechanism, when printing clear data, only fed printing sheet and do not carry carbon ribbon, thus reach the object of saving carbon ribbon, reduce equipment use cost.
Except object described above, feature and advantage, other object, feature and advantage that the present invention has, will be described in further detail by reference to the accompanying drawings.
Accompanying drawing explanation
Forming the part of this description, showing the preferred embodiments of the present invention for understanding accompanying drawing of the present invention further, and be used for principle of the present invention is described together with description.In figure:
Fig. 1 is the structural representation of existing thermal transfer printer;
Fig. 2 is the structural representation of thermal transfer printer according to a first embodiment of the present invention, and wherein switching device shifter is positioned at primary importance;
Fig. 3 is the switching device shifter of the thermal transfer printer shown in Fig. 2 structural representation when being positioned at the second place;
Fig. 4 is the partial structurtes axonometric drawing of the thermal transfer printer shown in Fig. 2;
Fig. 5 is the structural representation of thermal transfer printer according to a second embodiment of the present invention, and wherein switching device shifter is positioned at primary importance; And
Fig. 6 is the switching device shifter of the thermal transfer printer shown in Fig. 5 structural representation when being positioned at the second place.
Detailed description of the invention
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail, but the multitude of different ways that the present invention can be defined by the claims and cover is implemented.
As shown in Figures 2 to 4, thermal transfer printer comprises printing mechanism 100, carbon ribbon mechanism 200, conveying roller group 300 and switching device shifter 400.
Printing mechanism 100 for printing the print What preset on printing paper.Printing mechanism 100 comprises print head assembly 11 and printing rubber roller 12.Wherein print head assembly 11 is hinged with the frame 5 of thermal transfer printer by rotating shaft 13, can 13 rotate around the shaft; Printing rubber roller 12 and frame 5 pivot joint, freely can rotate around own axes.When print head assembly 11 13 rotation around the shaft, the printhead 111 in print head assembly 11 is separated or tangent cooperation with printing rubber roller 12.
Particularly, print head assembly 11 comprises printhead 111 and fixed head 112, and flexible member 113.Fixed head 112 comprises left plate 112a, right plate 112b and gripper shoe 112c, and wherein, left plate 112a and right plate 112b be arranged in parallel, and gripper shoe 112c is vertically set between left plate 112a and right plate 112b.Printhead 111 is fixedly connected with gripper shoe 112c, and between left plate 112a and right plate 112b, the rotating shaft 13 hinged with frame 5 runs through left plate 112a and right plate 112b one end away from printhead 111 successively, fixed head 112 and printhead 111 can together with 13 rotate around the shaft.
Flexible member 113 can be stage clip, torsion spring or leaf spring etc., quantity is at least one, be positioned at one end of gripper shoe 112c fixing printing head 111, and be positioned at the side of support arm 112c away from printhead 111, one end of flexible member 113 is connected with gripper shoe 112c, the other end is connected with frame 5, and under the effect of flexible member 113, fixed head 112 drives printhead 111 to there is movement tendency to printing rubber roller 12 bias voltage all the time.
Printing rubber roller 12, can around own axis when by driving, along printing paper throughput direction, and can by the printing paper between printhead 111 and printing rubber roller 12 and carbon ribbon downstream transport.
Carbon ribbon mechanism 200 comprises and is parallel to the axial granting axle 210 arranged of printing rubber roller 12 and reclaims axle 220.Wherein, providing axle 210 for supporting unworn carbon ribbon, reclaiming axle 220 for being wound around on their outer circumference by the carbon ribbon discharged by granting axle 210.
Particularly, provide around own axis when axle 210 is driven, untapped carbon ribbon discharges from granting axle 210 draws, and carbon ribbon, after between printhead 111 and printing paper, reclaims axle 220 and rotates, carbon ribbon backrush be wrapped on the periphery of recovery axle 220.The coat side of carbon ribbon contacts with printing paper, and the non-coat side of carbon ribbon contacts with printhead 111.When printing rubber roller 12 rotates, the carbon ribbon between printhead 111 and printing rubber roller 12 and printing paper are exported by the downstream to printing mechanism 100, reclaim axle 220 simultaneously and rotate, and are wound around with the carbon ribbon crossed on their outer circumference.
Along printing paper throughput direction, conveying roller group 300 is positioned at the upstream of printing mechanism 100, for when relatively printing rubber roller 12 is separated printhead 111 to printing mechanism 100 downstream fed printing sheet.Conveying roller group 300 comprises and is oppositely arranged and lays respectively at the first roller 310 and the second roller 320 of printing paper both sides, first roller 310 and the second roller 320 are parallel to printing rubber roller 12 and arrange, one in both first roller 310 and the second roller 320 is supported by frame 5, freely can rotate around own axes, another in both is flexibly connected with frame 5, and the first roller 310 is relative with the second roller 320.
One in both first roller 310 and the second roller 320 is drive roll, another is driven voller, and when the first roller 310 and the tangent cooperation of the second roller 320, drive roll rotates, drive driven voller rotates, and is carried by the printing paper be positioned between the two to printing mechanism 100 downstream.In the present embodiment, first roller 310 of conveying roller group 300 is supported by frame 5, second roller 320 is flexibly connected with frame 5, for drive roll, when the first roller 310 coordinates with the second roller 320 is tangent, second roller 320 is driven, and drives the first roller 310 to rotate thereupon, the printing paper be positioned between the two can be carried to printing mechanism 100 downstream.
It should be noted that, in other embodiments provided by the invention, along printing paper throughput direction, conveying roller group 300 also can be positioned at the downstream of printing mechanism 100.
Switching device shifter 400 comprises the first switching mechanism 3 and the second switching mechanism 4.Wherein, first switching mechanism 3 makes the printing paper feed status that the first roller 310 of conveying roller group 300 and the second roller 320 are alternatively in tangent cooperation or the released state be separated, when the first roller 310 of conveying roller group and the second roller 320 are in the printing paper feed status of tangent cooperation, first roller 310 and the second roller 320 can drive printing paper to move, when the first roller 310 of conveying roller group and the second roller 320 are in the released state be separated, the first roller 310 and the second roller 320 can not drive printing paper to move.Second switching mechanism 4 makes the printhead 111 of printing mechanism 100 and printing rubber roller 12 alternatively be in the tangent printing feed status coordinated or the released state be separated.When printhead 111 and the printing rubber roller 12 of printing mechanism 100 be in print feed status time, printing rubber roller 12 can drive printing paper and carbon ribbon motion, and in printing paper and carbon ribbon motion process, printhead 111 can on printing paper the image of print setting or word.When the printhead 111 of printing mechanism 100 is in released state with printing rubber roller 12, printing rubber roller 12 can not drive printing paper and carbon ribbon motion, and printhead 111 can not print on printing paper.
First switching mechanism 3 comprises the first curved rod 31, first axle 32 and driven unit 2.
Driven unit 2 comprises motor 21 and cam 22, and wherein, motor 21 is fixedly connected with the frame 5 of printer, is in transmission connection with cam 22 simultaneously; Cam 22 is hinged by rotating shaft 221 and frame 5, and under the driving of motor 21, cam 22 can 221 rotate around the shaft.The periphery of cam 22 comprises the first working face 222 and the second working face 223, and wherein, the first working face 222 and rotating shaft 221 are at a distance of the first setpoint distance, and the second working face 223 and rotating shaft 221 are at a distance of the second setpoint distance, and the first setpoint distance is less than the second setpoint distance.
Wherein the first curved rod 31 is hinged with frame 5 by the first axle 32, can rotate around the first axle 32.One end of first curved rod 31 is connected with the first roller 310 of conveying assembly 300 or the second roller 320, and the other end (hereinafter referred to as the first effect end 31a) of the first curved rod 31 abuts with the first working face 222 of the cam 22 of driven unit 2 or the second working face 223.
In the present embodiment, the first curved rod 31 is connected with the second roller 320, when the motor 21 of driven unit 2 rotates, driving cam 22 rotates, when the first working face 222 of cam 22 and first of the first curved rod 31 being acted on hold 31a to contact, first curved rod 31 is rotated around the first axle 32 by self gravitation effect, the second roller 420 connected with the first curved rod 31 is separated with the first roller 410, and now cam 22 is positioned at primary importance.
When motor 21 driving cam 22 is rotated further around the first axle 32, when second working face 223 and first of first curved rod 31 of cam 22 act on and hold 31a to contact, cam 22 drives the first curved rod 31 to rotate around the first axle 32, the second roller 320 be connected with the first curved rod 31 is coordinated with the first roller 310 is tangent, and now cam 22 is positioned at the second place.
Preferably, in other embodiments provided by the invention, first switching mechanism 3 can also comprise the first flexible member, one end of first flexible member is connected with frame 5, the other end is connected with the first curved rod 31, under the effect of the first flexible member, the first curved rod 31 has all the time rotates relative to frame 5, makes the movement tendency that relative first roller 310 of the second roller 320 of the conveying roller group 300 being positioned at its one end is separated.
Like this, when cam 22 is positioned at primary importance, under the self gravitation acting in conjunction of the first flexible member and the first curved rod 31, first curved rod 31 is rotated relative to frame 5, drive the second roller 320 of conveying roller group 300 to move to the direction away from the first roller 310, relative first roller 310 of the second roller 320 is separated; When cam 22 is positioned at the second place, under the effect of the second working face 223 of cam 22, the elastic force effect that the first curved rod 31 overcomes the first flexible member is rotated relative to frame 5, and the second roller 320 is coordinated with the first roller 310 is tangent.By arranging the first flexible member, the first roller 310 of conveying roller group 300 is made to be separated more reliable with the second roller 320.
It should be noted that, switching device shifter 400 can comprise one group of first switching mechanism 3, also two group of first switching mechanism 3 can be comprised, when switching device shifter comprises one group of first switching mechanism 3, one end of the first curved rod 31 is connected with the axial middle part of the first roller 310 of conveying roller group 300 or the second roller 320.
When switching device shifter 400 comprises two groups of first switching mechanisms 3, the bilateral symmetry that this two group of first switching mechanism 3 lays respectively at printing mechanism 100 width is arranged, and the first curved rod 31 of this two group of first switching mechanism 3 is connected with the first roller 310 of conveying roller group 300 or the two ends of the second roller 320 respectively.
It should be noted that, when switching device shifter comprises two groups of first switching mechanisms 3, switching device shifter 400 can comprise one group of driven unit 2, also can comprise two groups of driven units 2.
When switching device shifter 400 comprises one group of driven unit 2, the first axle 32 of two group of first switching mechanism 3 is same part, and the first curved rod 31 of two group of first switching mechanism 3 is all hinged with the sidewall of frame 5 by this first axle 32.Driven unit 2 is connected with a group in two group of first switching mechanism, two the first curved rod 31 synchronous axial system of two group of first switching mechanism 3 can be made by the first axle 32, thus the first roller 310 of conveying roller group 300 or the two ends of the second roller 320 can be made to be lifted simultaneously or to put down, printing paper is carried more steady.
Second switching mechanism 4 comprises the second curved rod 41, second axle 43 and driven unit 2.That is, the first switching mechanism 3 and the second switching mechanism 4 share same driven unit 2.
Wherein, second curved rod 41 quantity is two, lay respectively at the both sides of printing mechanism 100, be symmetrical arranged about printing mechanism 100 width, two the second curved rod 41 are all fixedly connected with the second axle 43, and the second axle 43 and the sidewall of frame 5 are hinged, therefore two the second curved rod 41 can frame 5 synchronous axial system relatively.
Wherein, the second effect end 41a is provided with in one end of two the second curved rod 41, second effect end 41a can abut with the first working face 222 of the cam 22 of driven unit 2 or the second working face 223, the other end of two the second curved rod 41 is provided with the 3rd effect end 41b, 3rd effect end 41b contacts with the left support sector 112d of fixed head 112 with right support sector 112e or is separated respectively, wherein, the left support sector 112d of fixed head 112 is connected with the left plate 112a of fixed head 112, the right support sector 112e of fixed head 112 is connected with the right plate 112b of fixed head 112.
When cam 22 is positioned at primary importance, first working face 222 of cam 22 acts on second of the second curved rod 41 holds 41a to contact, and now, fixed head 112 is under the effect of flexible member 113,13 rotate to printing rubber roller 12 direction, until printhead 111 coordinates with printing rubber roller 12 is tangent around the shaft.
Print head assembly 11 is supported by printing rubber roller 12, and the left support sector 112d of fixed head 112 and right support sector 112e oppresses the 3rd effect end 41b of the second curved rod 41, makes two the second curved rod 41 frame 53 synchronous axial system relatively; When cam 22 is positioned at the second place, second working face 223 of cam 22 acts on second of the second curved rod 41 holds 41a to contact, drive two the second curved rod 41 locking phase centered by the second axle 43 to rotate frame 5, the 3rd of two the second curved rod 41 the effect end 41b is contacted with the right support sector 112e of right plate 112b with the left support sector 112d of the left plate 112a of fixed head 112 respectively.
Two the second curved rod 41 overcome the elastic force of flexible member 113, by fixed head 112 to away from printing rubber roller 12 direction jack-up, printhead 111 are separated with printing rubber roller 12, and now print head assembly 11 is supported by the 3rd effect end 41b of two the second curved rod 41.
Preferably, in other embodiments provided by the invention, second switching mechanism 4 can also comprise the second flexible member, one end of second flexible member is connected with frame 5, and the other end is connected with the second curved rod 41, under the effect of the second flexible member, second curved rod 41 has all the time rotates relative to frame 5, the 3rd of second curved rod 41 effect end 41b is moved to the direction close to fixed head 112, thus by fixed head 112 jack-up, makes the movement tendency that printhead 111 is separated with printing rubber roller 12.
Like this, when cam 22 is positioned at the second place, under the acting in conjunction of both the second flexible member and cam 22, second curved rod 41 is rotated relative to frame 5, two the second curved rod 41 overcome the elastic force of flexible member 113, by fixed head 112 to away from printing rubber roller 12 direction jack-up, the relative printing rubber roller 12 of printhead 111 is separated.By arranging the second flexible member, printhead 111 can be made to be separated more reliable with printing rubber roller 12.
Introduce the course of work of the thermal transfer printer that the present embodiment provides below.
The print data that thermal transfer printer receives comprises clear data and non-blank-white data, clear data refers to that the heater element of printhead printhead when carrying out a line or continuous a few row prints does not generate heat, now printhead does not form image or word on printing paper, namely printing paper is that a line or multirow are blank; Non-blank-white data refer to the heating element generating heat of printhead printhead when printing a line or continuous multiple line printing, now on printing paper, form image or word.
Thermal transfer printer is when printing non-blank-white data, the motor 21 of the controller control switching device shifter 400 of thermal transfer printer rotates, the cam 22 of switching device shifter 400 is made to be positioned at primary importance, now, printhead 111 coordinates with printing rubber roller 12 is tangent, first roller 310 of conveying roller group 300 is separated with the second roller 320, printing rubber roller 12 and recovery axle 220 are driven respectively, printing rubber roller 12 is to printing mechanism 100 downstream fed printing sheet and carbon ribbon, reclaim axle 220 to be wound around with the carbon ribbon crossed on their outer circumference, simultaneously, the heating element generating heat of printhead 111, image or word is formed on the dye transfer of carbon ribbon coating to printing paper, complete printing.
When printing clear data, for saving carbon ribbon, the motor 21 of the controller control switching device shifter 400 of thermal transfer printer rotates, the cam 22 of switching device shifter 400 is made to be positioned at the second place, now, printhead 111 is separated with printing rubber roller 12, first roller 310 of conveying roller group 300 and the tangent cooperation of the second roller 320, printing rubber roller 12 and the second roller 320 are rotated further, reclaim axle 220 to stop operating, now, printing paper is continued conveying to printing mechanism 100 downstream direction by conveying roller group 300, because printhead 111 is separated with printing rubber roller 12, reclaim axle 220 to stop operating simultaneously, therefore, carbon ribbon between printhead 111 and printing rubber roller 12 is stopped conveying.Like this, when printing clear data, only fed printing sheet and do not carry carbon ribbon, thus save carbon ribbon.
The present embodiment provides has the thermal transfer printer that carbon ribbon saves function, by switching device shifter 400, making when printing non-blank-white data by printing rubber roller 12 fed printing sheet, reclaiming by recovery axle 220 carbon ribbon used; When printing clear data constantly, by conveying roller group 300 fed printing sheet, reclaiming axle 220 simultaneously and stopping operating, thus saving carbon ribbon, reducing the use cost of equipment.
Fig. 5 is the structural representation of thermal transfer printer according to a second embodiment of the present invention, and wherein switching device shifter is positioned at primary importance, and Fig. 6 is the switching device shifter of the thermal transfer printer shown in Fig. 5 structural representation when being positioned at the second place.As shown in the figure, the present embodiment is compared with a upper embodiment, and difference is that in the present embodiment, the second switching mechanism 4 supports the two ends of printing rubber roller 12, and printing rubber roller 12 can be driven in rotation around own axes.Under the effect of driven unit 2, the second switching mechanism 4 drive printing rubber roller 12 relatively frame 5 move, with the tangent cooperation of printhead 111 or be separated.
Particularly, one end that two the second curved rod 41 of the second switching mechanism 4 are respective is connected with the two ends of printing rubber roller 12 respectively.
When cam 22 is positioned at primary importance, second working face 223 of cam 22 acts on second of the second curved rod 41 holds 41a to contact, and drive two the second curved rod 41 to rotate relative to frame 5, the printing rubber roller 12 be connected with the other end of two the second curved rod 41 is coordinated with printhead 111 is tangent, and now print head assembly 11 is supported by printing rubber roller 12.
When cam 22 is positioned at the second place, first working face 222 of cam 22 acts on second of the second curved rod 41 holds 41a to contact, each second curved rod 41 is rotated relative to frame 5 by self gravitation effect, the printing rubber roller 12 being connected to each second curved rod 41 other end is moved to the direction away from print head assembly 11, printing rubber roller 12 is separated with printhead 111, now print head assembly 11 is by the effect of flexible member 113, to printing rubber roller 12 direction bias voltage, until be overlapped on the locating part 51 in frame 5, print head assembly 11 position stability.
What the present embodiment provided has the thermal transfer printer that carbon ribbon saves function, by switching device shifter relative to printhead mobile print rubber roll, can reach the object of saving carbon ribbon equally, can adapt to different client's instructions for use.
It is to be noted, in other embodiments of the invention, the driving mechanism of above-mentioned first switching mechanism and the second switching mechanism can be replaced by executing agencies such as electromagnet, and the first switching mechanism and the second switching mechanism also can be replaced by executing agencies such as electromagnet on the whole.
Present invention also offers a kind of Method of printing saving carbon ribbon, namely in print procedure, when the print length of the clear data printed is greater than preseting length, the printhead of the printing mechanism of described thermal transfer printer is separated with printing rubber roller, and utilize the conveying roller group of described thermal transfer printer along printing paper throughput direction fed printing sheet, stop conveying carbon ribbon simultaneously.
Specifically, in print procedure, when running into printing clear data, the controller of thermal transfer printer judges whether the print length of the clear data that will print is greater than preseting length, according to judged result, switches the duty of thermal transfer printer.
When being greater than preseting length, the printhead of the printing mechanism of described thermal transfer printer is separated with printing rubber roller, and utilizes conveying roller group along printing paper throughput direction fed printing sheet, stop conveying carbon ribbon simultaneously.When not being greater than preseting length, keep original print state constant, even if the printhead of the printing mechanism of described thermal transfer printer and the tangent cooperation of printing rubber roller, be in printing feed status, and make the first roller of conveying roller group and the second roller be in released state, carbon ribbon is in normal feed status.
Wherein, the selection of preseting length, not affect print speed and to make printing smooth and easy for better, in different use occasions, can select different preseting lengths, to take into account the saving of printing effect and carbon ribbon.
These are only the preferred embodiments of the present invention, be not limited to the present invention, for a person skilled in the art, the present invention can have various modifications and variations.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.
Description of reference numerals
100 printing mechanism 200 carbon ribbon mechanisms
300 conveying roller group 400 switching device shifters
100 printing mechanism 300 conveying roller groups
11 print head assembly 112 fixed heads
111 printhead 12 printing rubber rollers
13 rotating shaft 5 frames
113 flexible member 112a left plates
112b right plate 112c gripper shoe
210 provide axle 220 reclaims axle
310 first roller 320 second rollers
2 driven unit 3 first switching mechanisms
4 second switching mechanism 21 motors
22 cam 221 rotating shafts
222 first working face 223 second working faces
31 first curved rod 32 first axles
31a first acts on end 41,42 second curved rod
41a second acts on end 41b the 3rd and acts on end
The right support sector of 112e of 112d left support sector
43 second axles.
Claims (8)
1. a thermal transfer printer, is characterized in that, comprising:
Printing mechanism, comprise print head assembly and printing rubber roller, wherein, described print head assembly comprises the printhead be oppositely arranged with described printing rubber roller, and described printing mechanism has the released state that the tangent printing feed status that coordinates of described printing rubber roller and described printhead and described printing rubber roller and described printhead are separated;
Carbon ribbon mechanism, comprises and provides axle and reclaim axle, wherein, carbon ribbon from described granting axle, between described printhead and printing rubber roller, backrush is on described recovery axle;
Conveying roller group, comprises the first roller and the second roller, and wherein, described conveying roller group has the released state that the tangent printing paper feed status that coordinates of described first roller and the second roller and described first roller and the second roller are separated; And
Switching device shifter, for making described printing mechanism switch to described released state by described printing feed status when printing clear data, makes described conveying roller group switch to described printing paper feed status by described released state,
Wherein, described print head assembly comprises the fixed head of the described printhead of the installation be articulated in frame and the flexible member to described fixed head bias voltage, and wherein, described fixed head has the trend to the deflection of described printing rubber roller direction,
Described switching device shifter comprises:
First curved rod, around the axis oscillating of the first axle in described frame, wherein, second roller of described conveying roller group is connected with the first end of described first curved rod, described first curved rod has the first turned position making described second roller and the tangent cooperation of the first roller and the second turned position that described second roller is separated with the first roller
Second curved rod, around the axis oscillating of the second axle in described frame, wherein, described print head assembly also comprises the support sector abutted against with the first end of described second curved rod, described second curved rod has its first end and compresses the 3rd turned position that described support sector makes described printhead be separated with described printing rubber roller and make tangent the 4th turned position coordinated of described printhead and described printing rubber roller, and
Cam, have and abut with the second end of the second end of described first curved rod and described second curved rod the control wheel face coordinated, described control wheel face is configured so that when described first curved rod is in the first turned position, described second curved rod is in the 3rd turned position, and when described first curved rod is in the second turned position, described second curved rod is in the 4th turned position.
2. thermal transfer printer according to claim 1, it is characterized in that, described switching device shifter also comprises makes described first curved rod return back to the first elastic recovery element of the second turned position and make described second curved rod return back to the second elastic recovery element of the 3rd turned position.
3. thermal transfer printer according to claim 1 and 2, is characterized in that, along printing paper throughput direction, described conveying roller group is positioned at the upstream of described printing mechanism, and described second roller and described printing rubber roller are positioned at the same side of described printing paper.
4. a thermal transfer printer, is characterized in that, comprising:
Printing mechanism, comprise print head assembly and printing rubber roller, wherein, described print head assembly comprises the printhead be oppositely arranged with described printing rubber roller, and described printing mechanism has the released state that the tangent printing feed status that coordinates of described printing rubber roller and described printhead and described printing rubber roller and described printhead are separated;
Carbon ribbon mechanism, comprises and provides axle and reclaim axle, wherein, carbon ribbon from described granting axle, between described printhead and printing rubber roller, backrush is on described recovery axle;
Conveying roller group, comprises the first roller and the second roller, and wherein, described conveying roller group has the released state that the tangent printing paper feed status that coordinates of described first roller and the second roller and described first roller and the second roller are separated; And
Switching device shifter, for making described printing mechanism switch to described released state by described printing feed status when printing clear data, makes described conveying roller group switch to described printing paper feed status by described released state, wherein,
Described printing rubber roller is moveable relative to the position of described print head assembly, and described switching device shifter comprises:
First curved rod, around the axis oscillating of the first axle in frame, wherein, second roller of described conveying roller group is connected with the first end of described first curved rod, and described first curved rod has the 5th turned position making described second roller and the tangent cooperation of the first roller and the 6th turned position that described second roller is separated with the first roller;
Second curved rod, around the axis oscillating of the second axle in described frame, wherein, described printing rubber roller is connected with the first end of described second curved rod, and described second curved rod has the 7th turned position that described printing rubber roller is separated with described printhead and makes tangent the 8th turned position coordinated of described printing rubber roller and described printhead; And
Cam, have and abut with the second end of described first curved rod and the second end of the second curved rod the control wheel face coordinated, wherein, described control wheel face is configured so that when described first curved rod is in the 6th turned position, described second curved rod is in the 8th turned position, and when described first curved rod is in the 5th turned position, described second curved rod is in the 7th turned position.
5. thermal transfer printer according to claim 4, it is characterized in that, described switching device shifter also comprises makes described first curved rod return back to the 3rd elastic recovery element of the 6th turned position and make described second curved rod return back to the 4th elastic recovery element of the 8th turned position.
6. the thermal transfer printer according to claim 4 or 5, is characterized in that, along printing paper throughput direction, described conveying roller group is positioned at the upstream of described printing mechanism, and described second roller and described printing rubber roller are positioned at the same side of described printing paper.
7. a Method of printing for thermal transfer printer according to any one of claim 1 to 3, is characterized in that, comprising:
In print procedure, when the print length of the clear data printed is greater than preseting length, the printhead of the printing mechanism of described thermal transfer printer is separated with printing rubber roller, and utilize the conveying roller group of described thermal transfer printer along printing paper throughput direction fed printing sheet, stop conveying carbon ribbon simultaneously.
8. a Method of printing for the thermal transfer printer according to any one of claim 4 to 6, is characterized in that, comprising:
In print procedure, when the print length of the clear data printed is greater than preseting length, the printhead of the printing mechanism of described thermal transfer printer is separated with printing rubber roller, and utilize the conveying roller group of described thermal transfer printer along printing paper throughput direction fed printing sheet, stop conveying carbon ribbon simultaneously.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110216351.2A CN102896907B (en) | 2011-07-29 | 2011-07-29 | Heat transfer printer and printing method thereof |
| PCT/CN2012/079291 WO2013017049A1 (en) | 2011-07-29 | 2012-07-27 | Thermal transfer printer and printing method thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110216351.2A CN102896907B (en) | 2011-07-29 | 2011-07-29 | Heat transfer printer and printing method thereof |
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| CN102896907B true CN102896907B (en) | 2015-01-28 |
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| CN201110216351.2A Active CN102896907B (en) | 2011-07-29 | 2011-07-29 | Heat transfer printer and printing method thereof |
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| WO (1) | WO2013017049A1 (en) |
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| JP6175938B2 (en) * | 2013-06-27 | 2017-08-09 | セイコーエプソン株式会社 | Medium processing apparatus and method for controlling medium processing apparatus |
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| CN103640340B (en) * | 2013-12-05 | 2016-09-14 | 北京亿赫伟信科技发展有限公司 | Thermal transfer printer |
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| CN112248655B (en) * | 2020-09-30 | 2022-01-28 | 厦门汉印电子技术有限公司 | Thermal transfer printer |
| CN113524877A (en) * | 2021-08-18 | 2021-10-22 | 曲阜市玉樵夫科技有限公司 | Printing assembly of silk screen plate-making machine and control method thereof |
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| WO2013017049A1 (en) | 2013-02-07 |
| CN102896907A (en) | 2013-01-30 |
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