CN114434991B - Control method of thermal transfer printer and thermal transfer printer - Google Patents
Control method of thermal transfer printer and thermal transfer printer Download PDFInfo
- Publication number
- CN114434991B CN114434991B CN202011231160.9A CN202011231160A CN114434991B CN 114434991 B CN114434991 B CN 114434991B CN 202011231160 A CN202011231160 A CN 202011231160A CN 114434991 B CN114434991 B CN 114434991B
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- Prior art keywords
- reel
- thermal transfer
- transfer printer
- recovery
- supply reel
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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
- B41J33/36—Ribbon-feed devices or mechanisms with means for adjusting feeding rate
-
- 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
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
- Y02P70/10—Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working
Abstract
The invention discloses a control method of a thermal transfer printer, which comprises a printing head, a clamping conveying roller, a color ribbon mechanism and a detection mechanism, wherein the clamping conveying roller is arranged opposite to the printing head; the method comprises the following steps: controlling a clamping conveying roller to convey the color ribbon at a first preset linear speed; the cyclic timing steps of the supply reel and the recovery reel are performed every predetermined time period t. According to the control method of the thermal transfer printer, the tension of the ribbon can be effectively kept consistent in the printing process, and the phenomenon that the ribbon cannot advance, becomes wrinkled or has poor printing effect due to the fact that the ribbon is loosened or tensioned in time is avoided.
Description
Technical Field
The present invention relates to the field of printers, and in particular, to a control method of a thermal transfer printer and a thermal transfer printer.
Background
In thermal transfer printers, the ribbon is used as a medium before the image is fixed, and the ribbon tension must be kept uniform during the printing process to obtain better printing quality. If the tension of the ribbon is too small, the ribbon cannot be driven to advance, and even the ribbon is loosened; if the ribbon tension is too high, the ribbon may buckle in addition to wasting torque.
Accordingly, the present application proposes a control method of a thermal transfer printer and a thermal transfer printer, so as to at least partially solve the above technical problems.
Disclosure of Invention
In the summary, a series of concepts in simplified form are introduced, which will be further described in detail in the detailed description. The summary of the invention is not intended to define the key features and essential features of the claimed subject matter, nor is it intended to be used as an aid in determining the scope of the claimed subject matter.
In order to solve the above problems at least in part, the present invention discloses a control method of a thermal transfer printer, the thermal transfer printer comprising: a print head; a pinch roller disposed opposite the print head; the ink ribbon mechanism comprises a supply reel and a recovery reel, wherein the ink ribbon passes between the printing head and the clamping conveying roller from the supply reel and is rewound on the recovery reel; and a detection mechanism for detecting operating parameters of the supply reel and the recovery reel;
the method comprises the following steps: controlling the clamping conveying roller to convey the color ribbon at a first preset linear speed; the step of cyclically regulating the speed of the supply reel and the recovery reel is performed every predetermined time period t.
According to the control method of the thermal transfer printer, the speed of the supply reel and the speed of the recovery reel can be periodically adjusted in the printing process, so that the tension of the ribbon can be effectively kept consistent, and the phenomenon that the ribbon cannot advance, becomes wrinkled or has poor printing effect due to the fact that the ribbon is loosened or tensioned in time is avoided.
Preferably, the step of cyclically adjusting the speed comprises:
controlling the supply reel to release the color ribbon at a second speed lower than the first preset linear speed until the running speed of the supply reel reaches a first constant speed, and running at the first constant speed until the preset time period t is reached; and/or
Controlling the recovery reel to recover the color ribbon at a third speed higher than the first preset linear speed until the operation speed of the recovery reel reaches a second constant speed, and then operating at the second constant speed until the preset time period t is reached;
wherein the first constant speed is equal to the second constant speed and is equal to the first predetermined linear speed.
Preferably, the supply reel and the recovery reel are configured to reach the respective first constant speed and second constant speed simultaneously.
Preferably, the predetermined time period t is selected in the range of 1 s.ltoreq.t.ltoreq.5 s.
Preferably, the detection mechanism includes: and the color band detector is used for detecting the use amount of the color band and the color band movement information.
Preferably, the detection mechanism includes: a first magneto-sensitive encoder for detecting a rotational angular velocity and a number of rotations of the supply reel, and a second magneto-sensitive encoder for detecting a rotational angular velocity and a number of rotations of the recovery reel, the supply reel being determined to reach the first constant velocity when the first magneto-sensitive encoder detects that a time interval between successive pulses corresponding to the supply reel is constant; and determining that the recovery reel reaches the second constant speed when the second magneto-sensitive encoder detects that the time interval between the continuous pulses corresponding to the recovery reel is constant.
Preferably, the detection mechanism includes: a third magnetically sensitive encoder for detecting a rotational angular velocity and a number of rotations of the driving device of the supply reel, and a fourth magnetically sensitive encoder for detecting a rotational angular velocity and a number of rotations of the driving device of the recovery reel, the supply reel being determined to reach the first constant velocity when the third magnetically sensitive encoder detects that a time interval between successive pulses corresponding to the driving device of the supply reel is constant; and determining that the recovery reel reaches the second constant speed when the fourth magneto-sensitive encoder detects that the time interval between successive pulses corresponding to the driving means of the recovery reel is constant.
The present invention also provides a thermal transfer printer comprising: a print head; a pinch roller disposed opposite the print head; the ink ribbon mechanism comprises a supply reel and a recovery reel, wherein the ink ribbon passes between the printing head and the clamping conveying roller from the supply reel and is rewound on the recovery reel; the detection mechanism is used for detecting the operation parameters of the supply reel, the recovery reel and the clamping conveying roller; the control device is respectively connected with the detection mechanism, a driving device for driving the clamping conveying roller, a driving device for supplying the reel and a driving device for recovering the reel in a signal manner;
wherein the control device is configured to control the thermal transfer printer to execute the steps of the control method according to any one of the above embodiments.
Preferably, the supply reel is driven by a first drive assembly comprising a first motor and a first transmission assembly in driving connection with an output shaft of the first motor and an axle of the supply reel.
Preferably, the recovery reel is driven by a second driving assembly, the second driving assembly comprises a second motor and a second transmission assembly, and the second transmission assembly is in transmission connection with an output shaft of the second motor and an axle of the recovery reel.
Preferably, the first motor and the second motor are stepper motors.
Preferably, the first transmission assembly is a transmission gear assembly or a synchronous belt synchronous wheel assembly; and/or
The second transmission assembly is a transmission gear assembly or a synchronous belt synchronous wheel assembly.
Drawings
The following drawings of embodiments of the present invention are included as part of the invention. The drawings illustrate embodiments of the invention and their description to explain the principles of the invention. In the drawings of which there are shown,
fig. 1 is a perspective view of a thermal transfer printer according to a preferred embodiment of the present invention;
FIG. 2 is a schematic perspective view of another perspective of a thermal transfer printer according to a preferred embodiment of the present invention, in which the ink ribbon has been installed in place; and
fig. 3 is a perspective view of another perspective of a thermal transfer printer according to a preferred embodiment of the present invention, in which the ink ribbon has been removed.
Detailed Description
In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. It will be apparent, however, to one skilled in the art that embodiments of the invention may be practiced without one or more of these details. In other instances, well-known features have not been described in detail in order to avoid obscuring embodiments of the invention.
In the following description, a detailed structure will be presented for a thorough understanding of embodiments of the present invention. It will be apparent that embodiments of the invention may be practiced without limitation to the specific details that are set forth by those skilled in the art. Preferred embodiments of the present invention are described in detail below, however, the present invention may have other embodiments in addition to these detailed descriptions.
The invention provides a control method of a thermal transfer printer and the thermal transfer printer. As shown in fig. 1 to 3, the thermal transfer printer includes a print head 110, a pinch conveying roller 120 provided opposite to the print head 110, a ribbon mechanism 130, a detection mechanism (not shown in the drawings), and a control device (not shown in the drawings). The control means may be FPGA (Field Programmable Gate Array).
The print head 110 is used to print a preset print content on a print sheet. The pinch roller 120 is typically driven by a motor that, when driven, rotates about its own axis and transports the print paper and the ink ribbon 133 downstream in the print paper transport direction between the print head 110 and the pinch roller 120.
The ribbon 133 mechanism includes a supply spool 131 and a recovery spool 132 disposed axially parallel to the pinch roller 120, wherein the ribbon 133 is disposed from the supply spool 131, between the print head 110 and the pinch roller 120, back onto the recovery spool 132. It will be appreciated that the feed reel 131 and the recovery reel 132 only show the mounting portions 138, the cross bar between the two mounting portions 138 of the feed reel 131 is not shown, and likewise the cross bar between the two mounting portions 138 of the recovery reel 132 is not shown.
More specifically, the supply reel 131 is driven by a first drive assembly comprising a first motor 134 and a first transmission assembly 135, the first transmission assembly 135 being in driving connection with the output shaft of the first motor 134 and the axle of the supply reel 131. The first motor 134 may be a stepper motor. The first drive assembly 135 may be a drive gear assembly or a timing belt timing wheel assembly.
The recovery reel 132 is driven by a second drive assembly comprising a second motor 136 and a second transmission assembly 137, the second transmission assembly 137 being in transmission connection with the output shaft of the second motor 136 and the axle of the recovery reel 132. The second motor 136 may also be a stepper motor. The second drive assembly 137 may be a drive gear assembly or a timing belt timing wheel assembly.
Further, as shown in fig. 1, both the supply reel 131 and the recovery reel 132 can be attached to the printer by the attachment portion 138.
The detection mechanism may be used to detect the operating parameters of the supply reel 131, the recovery reel 132, and the pinch transport roller 120. Specifically, the detection mechanism may include: a color bar detector for detecting the usage amount of the color bar 133 and movement information of the color bar 133; a magnetically sensitive encoder for detecting rotational angular velocities of the supply reel 131 and the recovery reel 132 may also be included. Specifically, the detection mechanism may include a first magnetic-sensitive encoder for detecting the rotational angular velocity and the number of rotations of the supply reel 131, and a second magnetic-sensitive encoder for detecting the rotational angular velocity and the number of rotations of the recovery reel 132. It is understood that the number of rotations corresponds to the amount of ribbon usage.
Of course, the detection mechanism may also include a third magnetic-sensitive encoder for detecting the rotational angular velocity and the number of rotations of the driving device (e.g., the first motor 134) that supplies the reel 131, and a fourth magnetic-sensitive encoder for detecting the rotational angular velocity and the number of rotations of the driving device (e.g., the second motor 136) that returns the reel 132.
More specifically, in the present embodiment, the magnetosensitive encoder is an AB-direction bidirectional hall magnetosensitive encoder.
It should be noted that although a part of the structure of the thermal transfer printer is schematically described at this time, these lists are merely exemplary, and are not intended as structural limitations on the thermal transfer printer of the present invention.
The invention also provides a control method of the thermal transfer printer. The method comprises the following steps:
controlling the pinch conveying roller 120 to convey the ink ribbon 133 at a first predetermined linear velocity V1;
the cyclic timing steps of the supply reel 131 and the recovery reel 132 are performed every predetermined time period t.
Specifically, the step of cyclically adjusting the speed may include:
controlling the supply reel 131 to release the ink ribbon 133 at a second speed V2 lower than the first predetermined linear speed V1 until the first constant speed K1 is reached by the running speed of the supply reel 131 and then running at the first constant speed K1 until the predetermined time period t is reached; and/or
Controlling the recovery roller 132 to recover the ink ribbon at a third speed V3 higher than the first predetermined linear speed V1 until the operation speed of the recovery roller 132 reaches a second constant speed K2, and then operating at the second constant speed K2 until a predetermined time period t is reached;
wherein the first constant speed K1 is equal to the second constant speed K2 and both are equal to the first predetermined linear speed V1.
It will be appreciated that the cyclic speed adjusting step may be to adjust the running speed of the supply reel 131 only, or to adjust the running speed of the recovery reel 132 only, or to adjust the running speeds of the supply reel 131 and the recovery reel 132 simultaneously. In the present embodiment, the operation speeds of the supply reel 131 and the recovery reel 132 are adjusted simultaneously.
Preferably, the predetermined time period t may be selected in the range of 1 s.ltoreq.t.ltoreq.5 s.
More preferably, the second speed V2 and the third speed V3 may be set so that the supply reel 131 and the recovery reel 132 reach the respective first constant speed K1 and second constant speed K2 at the same time.
Specifically, it is determined how the supply reel 131 reaches the first constant speed K1 and the recovery reel 132 reaches the second constant speed K2. The method can be realized by the following steps:
in the embodiment in which the detection mechanism includes the first and second magneto-sensitive encoders described above, when the first magneto-sensitive encoder detects that the time interval between successive pulses corresponding to the supply reel 131 is constant, it is determined that the supply reel 131 reaches the first constant speed; when the second magnetically sensitive encoder detects that the time interval between successive pulses corresponding to the recovery reel 132 is constant, it is determined that the recovery reel 132 reaches the second constant speed.
Alternatively, in an embodiment in which the detection mechanism includes the third and fourth magneto-sensitive encoders described above, when the third magneto-sensitive encoder detects that the time interval between successive pulses corresponding to the drive means for feeding the reel 131 is constant, it is determined that the feeding reel 131 reaches the first constant speed; when the fourth magnetically sensitive encoder detects that the time interval between successive pulses corresponding to the drive means of the recovery reel 132 is constant, it is determined that the recovery reel 132 reaches the second constant speed.
For ease of understanding, detailed description will now be given with reference to specific examples.
The control process is as follows: controlling the printer to start printing, and controlling the pinch conveying roller 120 to convey the ink ribbon at a first predetermined linear velocity V1 of 50 mm/s; after a predetermined time period t of, for example, 3s has elapsed, a cyclic timing step is performed: controlling the supply reel 131 to release the ribbon 133 at a second speed V2 (e.g., 40 mm/s) lower than the first predetermined linear speed V1 (50 mm/s) until the running speed of the supply reel 131 reaches a first constant speed K1, e.g., 50mm/s, and then running at the first constant speed K1 until a predetermined time period t=3s is reached; meanwhile, the recovery roller 132 is also controlled to recover the ink ribbon 133 at a third speed V3 (e.g., 60 mm/s) higher than the first predetermined linear speed V1 (50 mm/s), until the second constant speed K2 (e.g., 50 mm/s) is reached after the running speed of the recovery roller 132, and the second constant speed K2 is operated until a predetermined time period t=3s is reached; and then the next cycle speed regulation step is carried out.
It will be appreciated that the determination of whether the running speed of the supply reel 131 reaches the first constant speed K1 may be achieved by detecting the rotation parameter of the first motor 134 by the magneto-sensitive encoder. Specifically, it may be determined that the supply reel 131 reaches the first constant speed K1 when it is detected that the time interval between 50 consecutive pulses corresponding to the first motor 134 is constant. Similarly, it is also possible to determine whether the running speed of the recovery reel 132 reaches the second constant speed K2 by the magneto-sensitive encoder.
According to the control method of the thermal transfer printer, the speed of the supply reel and the speed of the recovery reel can be periodically adjusted in the printing process, so that the tension of the ribbon can be effectively kept consistent, and the phenomenon that the ribbon cannot advance, becomes wrinkled or has poor printing effect due to the fact that the ribbon is loosened or tensioned in time is avoided.
The flow described in all the preferred embodiments described above is only an example. Unless adverse effects occur, various processing operations may be performed in an order different from that of the above-described flow. The step sequence of the above-mentioned flow can also be added, combined or deleted according to the actual requirement.
Further, the commands, command numbers and data items described in all the above preferred embodiments are examples only, and thus these commands, command numbers and data items may be set in any manner as long as the same functions are achieved. The elements of the terminals of the preferred embodiments may also be integrated, further divided or pruned as desired.
Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular implementations only and is not intended to be limiting of the invention. Terms such as "component" as used herein may refer to either a single part or a combination of parts. Terms such as "mounted," "disposed," and the like as used herein may refer to one component being directly attached to another component or to one component being attached to another component through an intermediary. Features described herein in one embodiment may be applied to another embodiment alone or in combination with other features unless the features are not applicable or otherwise indicated in the other embodiment.
The present invention has been described in terms of the above embodiments, but it should be understood that the above embodiments are for purposes of illustration and description only and are not intended to limit the invention to the embodiments described. Those skilled in the art will appreciate that many variations and modifications are possible in light of the teachings of the invention, which variations and modifications are within the scope of the invention as claimed.
Claims (9)
1. A control method of a thermal transfer printer, the thermal transfer printer comprising:
a print head;
a pinch roller disposed opposite the print head;
the ink ribbon mechanism comprises a supply reel and a recovery reel, wherein the ink ribbon passes between the printing head and the clamping conveying roller from the supply reel and is rewound on the recovery reel; and
a detection mechanism for detecting operating parameters of the supply reel and the recovery reel;
the method comprises the following steps:
controlling the clamping conveying roller to convey the color ribbon at a first preset linear speed;
executing a cyclic speed regulation step of the supply reel and the recovery reel at intervals of a preset time t;
the step of circulating speed regulation comprises the following steps:
controlling the supply reel to release the color ribbon at a second speed lower than the first preset linear speed until the running speed of the supply reel reaches a first constant speed, and running at the first constant speed until the preset time period t is reached;
controlling the recovery reel to recover the color ribbon at a third speed higher than the first predetermined linear speed until the operation speed of the recovery reel reaches a second constant speed, operating at the second constant speed until the predetermined time period t is reached,
wherein the first constant speed is equal to the second constant speed and is equal to the first predetermined linear speed.
2. The control method of a thermal transfer printer according to claim 1, wherein the predetermined time period t is selected in a range of 1 s.ltoreq.t.ltoreq.5 s.
3. The control method of a thermal transfer printer according to claim 1, wherein the detection mechanism includes: and the color band detector is used for detecting the use amount of the color band and the color band movement information.
4. The control method of a thermal transfer printer according to claim 1, wherein the detection mechanism includes: a first magneto-sensitive encoder for detecting a rotational angular velocity and a number of rotations of the supply reel, and a second magneto-sensitive encoder for detecting a rotational angular velocity and a number of rotations of the recovery reel, the supply reel being determined to reach the first constant velocity when the first magneto-sensitive encoder detects that a time interval between successive pulses corresponding to the supply reel is constant; and determining that the recovery reel reaches the second constant speed when the second magneto-sensitive encoder detects that the time interval between the continuous pulses corresponding to the recovery reel is constant.
5. The control method of a thermal transfer printer according to claim 1, wherein the detection mechanism includes: a third magnetically sensitive encoder for detecting a rotational angular velocity and a number of rotations of the driving device of the supply reel, and a fourth magnetically sensitive encoder for detecting a rotational angular velocity and a number of rotations of the driving device of the recovery reel, the supply reel being determined to reach the first constant velocity when the third magnetically sensitive encoder detects that a time interval between successive pulses corresponding to the driving device of the supply reel is constant; and determining that the recovery reel reaches the second constant speed when the fourth magneto-sensitive encoder detects that the time interval between successive pulses corresponding to the driving means of the recovery reel is constant.
6. A thermal transfer printer, the thermal transfer printer comprising:
a print head;
a pinch roller disposed opposite the print head;
the ink ribbon mechanism comprises a supply reel and a recovery reel, wherein the ink ribbon passes between the printing head and the clamping conveying roller from the supply reel and is rewound on the recovery reel;
a detection mechanism for detecting operation parameters of the supply reel, the recovery reel, and the grip conveying roller; and
the control device is respectively connected with the detection mechanism, a driving device for driving the clamping conveying roller, a driving device for supplying the winding wheel and a driving device for recovering the winding wheel in a signal manner;
wherein the control device is configured to control the thermal transfer printer to perform the steps of the control method of any one of claims 1 to 5.
7. The thermal transfer printer of claim 6, wherein the supply spool is driven by a first drive assembly comprising a first motor and a first transmission assembly in driving connection with an output shaft of the first motor and an axle of the supply spool.
8. The thermal transfer printer of claim 7, wherein the recovery roller is driven by a second drive assembly comprising a second motor and a second transmission assembly in driving connection with an output shaft of the second motor and an axle of the recovery roller.
9. The thermal transfer printer of claim 8, wherein the first drive assembly is a drive gear assembly or a timing belt timing wheel assembly; and/or
The second transmission assembly is a transmission gear assembly or a synchronous belt synchronous wheel assembly.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011231160.9A CN114434991B (en) | 2020-11-06 | 2020-11-06 | Control method of thermal transfer printer and thermal transfer printer |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202011231160.9A CN114434991B (en) | 2020-11-06 | 2020-11-06 | Control method of thermal transfer printer and thermal transfer printer |
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| CN114434991B true CN114434991B (en) | 2023-06-16 |
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|---|---|
| CN114434991A (en) | 2022-05-06 |
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