CN108189578B - Drum type continuous rotating ink-jet printing method - Google Patents
Drum type continuous rotating ink-jet printing method Download PDFInfo
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- CN108189578B CN108189578B CN201711466191.0A CN201711466191A CN108189578B CN 108189578 B CN108189578 B CN 108189578B CN 201711466191 A CN201711466191 A CN 201711466191A CN 108189578 B CN108189578 B CN 108189578B
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- China
- Prior art keywords
- printing
- drum
- trolley
- spray head
- width
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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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J25/001—Mechanisms for bodily moving print heads or carriages parallel to the paper surface
- B41J25/005—Mechanisms for bodily moving print heads or carriages parallel to the paper surface for serial printing movements superimposed to character- or line-spacing movements
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M5/00—Duplicating or marking methods; Sheet materials for use therein
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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
- B41J25/00—Actions or mechanisms not otherwise provided for
- B41J2025/008—Actions or mechanisms not otherwise provided for comprising a plurality of print heads placed around a drum
Abstract
The application discloses a drum-type continuous rotary inkjet printing method, which comprises S1: the paper rolls circumferentially, and the nozzle trolley moves to the position of the first graph printing width; s2: the printing drum rotates to the spraying position, the spraying work of the first spray head on the spray head trolley is carried out, and the spraying work of the rest spray heads is carried out in a delayed manner; s3: when the printing of the first pass is finished, the nozzle small parking space is moved to the position where the next pass is printed; s4: when the printing drum rotates to the ejection starting position again, repeating the steps until the printing of the first graphic printing width is finished; s5: and after the first image printing width is finished, the nozzle small stall moves to the next image printing width to be fixed, and the steps are repeated to finish the printing of the paper. The scanning direction of the spray printing rotates continuously at a constant speed, frequent acceleration and deceleration control is not needed, and the printing of the next pass can be started after the printing of each sprayer is finished, so that the printing efficiency is improved. The spray head does not move in the printing process, so that the movement of a spray head ink supply system and the like is reduced, and the reliability is improved.
Description
Technical Field
The application relates to the field of ink-jet printing, in particular to a drum type continuous rotating ink-jet printing method.
Background
For the multi-pass printing mode of ink-jet printing, the spray printing is generally carried out in the reciprocating transverse movement process of the spray head trolley. The spray head trolley is started to accelerate, uniformly spray and decelerate to stop. If the printing is unidirectional, the printing needs to be reset to one side quickly and the process is repeated; if the printing is bidirectional, the above processes need to be repeated, and the moving tracks of the ink dots are different due to the different directions of the two times of printing, which inevitably causes the reduction of the printing quality.
The spray head trolley consists of multi-color spray heads, has a certain size, and the width of the spray head trolley is added into a printing stroke when a certain width is printed; if the nozzle carriage is 10 inches wide and the width of the printed paper is 30 inches, the printing stroke of the nozzle carriage is 10+30=40, so that all the nozzles on the nozzle carriage complete the printing of the data.
That is, in the above printing method, acceleration and deceleration of the head carriage are started and stopped in each reciprocating printing process, and the actual stroke of the carriage is lengthened due to the inherent width of the head carriage, which inevitably causes a serious decrease in printing efficiency. Although the efficiency of bi-directional printing is improved, the print quality is correspondingly degraded. Moreover, the reliability of the system is reduced due to mechanical impact on the spray head or the ink supply system caused by acceleration and deceleration starting and stopping of the movement of the spray head trolley.
Therefore, in order to solve the problems that the spray printing efficiency is insufficient in the reciprocating process of the nozzle trolley, and the nozzle trolley is frequently accelerated and decelerated to damage a spray printing system, improvement on the prior art is needed.
Disclosure of Invention
In view of the above, the present invention is directed to overcome the shortcomings of the prior art and to provide a drum-type continuous rotary inkjet printing method.
In order to solve the technical problem, the invention adopts the following scheme:
a method of drum continuous rotary inkjet printing comprising the steps of:
s1: the paper is attached to the circumferential surface of the printing drum and rotates along with the printing drum in the same direction, a plurality of nozzles for spray printing are distributed on the nozzle trolley and are consistent with the circumferential direction of the printing drum, and the nozzle trolley is fixed after moving to the position of the first image printing width;
s2: when the printing drum rotates to the spraying starting position, the control system controls the spraying work of the first sprayer on the sprayer trolley, and the spraying work of the rest sprayers is delayed under the control of the control system respectively so as to finish the printing of the first pass;
s3: after the printing of the first pass is finished, the sprayer trolley moves to the position where the next pass is printed along the axial direction of the printing drum and then is fixed;
s4: when the printing drum rotates to the spraying starting position again, the control system controls the spraying work of the first spray head on the spray head trolley, and the spraying work of the rest spray heads is delayed under the control of the control system respectively so as to finish the printing of a second pass;
s5: repeating the steps S3-S4 to complete the printing of the first image printing width;
s6: and after the first image printing width is finished, the spray head trolley moves to the next image printing width along the axial direction of the printing drum to be fixed, and the steps S2-S5 are repeated to finish the printing of the paper.
This application spouts the in-process of seal at the ink, and the shower nozzle dolly is immovable, avoids the frequent acceleration and deceleration of shower nozzle dolly to spouting the damage of seal system. The spray head does not move in the printing process, and spray printing can be completed through the rotation of the printing drum, so that the movement of a spray head ink supply system and the like can be reduced, and the reliability of the system is improved.
The printing drums all rotate towards the same direction, correction errors of bidirectional printing do not exist, the inking point directions are the same, printing precision is improved, image output quality is improved, and high-quality image printing output under high jet printing efficiency is maintained.
The paper passes through the first spray head and the Nth spray head of the second spray head … … successively along with the rotation of the printing drum, so that the spray heads are started in sequence in a delayed mode under the control of the control system, and the colors are printed together in an accurate overlapping mode. When the printing of the first pass is finished, the printing drum rotates to the spraying starting position again, namely the printing of the next pass is about to start, and all the spray heads perform spraying printing in sequence under the control of the control system. The continuous rotation is basically free of pause, and the jet printing efficiency can be greatly improved.
To illustrate more clearly the shift in pass, the following is exemplified: the pass displacement refers to the process of image interpolation, for example, the inherent physical resolution among the nozzles of the spray heads is 150dpi, that is, 150 nozzles are uniformly arranged in the width of one inch (the dot spacing is 0.1693 mm), but if a high-quality printing output is required, the output resolution is 1200dpi, that is, the printing of 8 passes is required, and after each pass is printed, the trolley displacement is 0.0212 mm.
And a row of spray heads are arranged on the spray head trolley.
The sprayer trolley is provided with at least two rows of sprayers, each row of sprayers are arranged along the axial direction of the printing drum, and the two adjacent rows of sprayers are arranged in a staggered mode. The cost is high when a single nozzle needs to achieve a large printing width. Therefore, the arrangement of the two rows of spray heads can greatly improve the spray printing efficiency and reduce the cost. If the printing width of a single nozzle is 1.27 inches, two rows of nozzles can be spliced into 2.54 inches. The shower nozzle need be fixed on the shower nozzle dolly through constituteing shower nozzle module such as shower nozzle seat, shower nozzle support, consequently when two shower nozzle module straight lines splice, there is the non-printing region between the shower nozzle on two shower nozzle modules, consequently need set the shower nozzle to the dislocation in order to overcome such shortcoming.
The printing drum is provided with a mark, the position of the paper corresponding to the mark is a spraying starting position, the mark is identified by using a photoelectric sensor, and a control system acquires the signal change of the photoelectric sensor so as to control the spraying and printing work of the first nozzle.
The printing drum is provided with a rotary encoder, and the control system controls the delayed jet printing work of the spray head according to the pulse signal of the rotary encoder. The rotation amount of the printing drum can be obtained through the pulse signal of the rotary encoder, so that the time delay work of the spray head is controlled.
And a drying device is arranged along the circumferential direction of the printing drum. The drying device is a UVLED drying device. The drying device is convenient for quick solidification while spraying and printing each pass. Further, the drying device is arranged on one side of the printing trolley. The drying device can move along with the pass displacement of the printing trolley, and the drying device is prevented from being overlarge.
Compared with the prior art, the invention has the following beneficial effects: the scanning direction of the spray printing rotates continuously at a constant speed, frequent acceleration and deceleration control is not needed, and the printing of the next pass can be started after the printing of each sprayer is finished, so that the acceleration waiting time is reduced, and the printing efficiency is improved. The spray head does not move in the printing process, so that the movement of a spray head ink supply system and the like is reduced, and the reliability is improved. The scanning directions of the jet printing are the same, correction errors of bidirectional printing do not exist, the directions of the inking points are the same, the printing precision is improved, and the output quality of the image is improved.
Drawings
FIG. 1 is a schematic view of inkjet printing;
FIG. 2 is a side view of FIG. 1;
fig. 3 is a top view of fig. 1.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will further describe the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 3, a drum type continuous rotation inkjet printing method includes the following steps:
s1: the paper is attached to the circumferential surface of the printing drum 200 and rotates along with the printing drum in the same direction, a plurality of nozzles 101 for spray printing, which are consistent with the circumferential direction of the printing drum, are distributed on the nozzle trolley 100 (the nozzle trolley is used for bearing the nozzles), and the nozzle trolley is fixed after moving to the position of the first image printing width;
s2: when the printing drum rotates to the spraying starting position, the control system controls the spraying work of the first sprayer on the sprayer trolley, and the spraying work of the rest sprayers is delayed under the control of the control system respectively so as to finish the printing of the first pass;
s3: after the printing of the first pass is finished, the sprayer trolley moves to the position where the next pass is printed along the axial direction of the printing drum and then is fixed;
s4: when the printing drum rotates to the spraying starting position again, the control system controls the spraying work of the first spray head on the spray head trolley, and the spraying work of the rest spray heads is delayed under the control of the control system respectively so as to finish the printing of a second pass;
s5: repeating the steps S3-S4 to complete the printing of the first image printing width;
s6: and after the first image printing width is finished, the spray head trolley moves to the next image printing width along the axial direction of the printing drum to be fixed, and the steps S2-S5 are repeated to finish the printing of the paper.
Two rows of spray heads 111 and 112 are arranged on the spray head trolley 100 along the circumferential direction of the printing drum, each row of spray heads is arranged along the axial direction of the printing drum, and two adjacent rows of spray heads are arranged in a staggered manner.
The side surface of the printing drum is provided with a mark, the position of the paper corresponding to the mark is a spraying starting position, the mark is identified by using a photoelectric sensor, and a control system acquires the signal change of the photoelectric sensor so as to control the spraying and printing work of the first spray head.
The printing drum is provided with a rotary encoder 300, and the control system controls the delayed jet printing work of the spray head according to the pulse signal of the rotary encoder.
Along the circumferential direction of the printing drum, a drying device 400 is provided.
The above embodiments are merely specific implementations of the present invention, and the description thereof is specific and detailed, but not construed as limiting the scope of the present invention. It should be noted that, for a person skilled in the art, several variations and modifications are possible without departing from the inventive concept, and such obvious alternatives fall within the scope of the invention.
Claims (8)
1. A drum-type continuous rotary inkjet printing method, comprising the steps of:
s1: the paper is attached to the circumferential surface of the printing drum and rotates along with the printing drum in the same direction, a plurality of nozzles for spray printing are distributed on the nozzle trolley and are consistent with the circumferential direction of the printing drum, and the nozzle trolley is fixed after moving to the position of the first image printing width;
s2: when the printing drum rotates to the spraying starting position, the control system controls the spraying work of the first sprayer on the sprayer trolley, and the spraying work of the rest sprayers is delayed under the control of the control system respectively so as to finish the printing of the first pass;
s3: after the printing of the first pass is finished, the sprayer trolley moves to the position where the next pass is printed along the axial direction of the printing drum and then is fixed;
s4: when the printing drum rotates to the spraying starting position again, the control system controls the spraying work of the first spray head on the spray head trolley, and the spraying work of the rest spray heads is delayed under the control of the control system respectively so as to finish the printing of a second pass;
s5: repeating the steps S3-S4 to complete the printing of the first image printing width;
s6: and after the first image printing width is finished, the spray head trolley moves to the next image printing width along the axial direction of the printing drum to be fixed, and the steps S2-S5 are repeated to finish the printing of the paper.
2. The method of drum continuous rotary inkjet printing according to claim 1 wherein the head carriage is provided with a row of heads.
3. The method of drum-type continuous rotary inkjet printing according to claim 1 wherein the nozzle carriage is provided with at least two rows of nozzles, each row of nozzles being arranged along the axial direction of the printing drum, adjacent rows of nozzles being offset.
4. The method for drum-type continuous rotary inkjet printing according to claim 1 wherein the printing drum is provided with marks corresponding to the paper position as a start position, the marks are identified by a photoelectric sensor, and a control system learns the signal change of the photoelectric sensor to control the printing operation of the first nozzle.
5. The method for drum-type continuous rotary inkjet printing according to claim 1 wherein the printing drum is provided with a rotary encoder, and the control system controls the delayed jet printing operation of the nozzles according to a pulse signal of the rotary encoder.
6. A drum type continuous rotary inkjet printing method according to claim 1, wherein a drying device is provided along a circumferential direction of the printing drum.
7. The drum type continuous rotary inkjet printing method according to claim 6 wherein the drying device is a UVLED drying device.
8. The method of drum continuous rotary inkjet printing according to claim 6 or 7 wherein the drying device is disposed on one side of the print carriage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466191.0A CN108189578B (en) | 2017-12-28 | 2017-12-28 | Drum type continuous rotating ink-jet printing method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711466191.0A CN108189578B (en) | 2017-12-28 | 2017-12-28 | Drum type continuous rotating ink-jet printing method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108189578A CN108189578A (en) | 2018-06-22 |
| CN108189578B true CN108189578B (en) | 2020-04-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201711466191.0A Expired - Fee Related CN108189578B (en) | 2017-12-28 | 2017-12-28 | Drum type continuous rotating ink-jet printing method |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110154518A (en) * | 2019-06-21 | 2019-08-23 | 深圳市科发机械制造有限公司 | Printing machine |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5931589A (en) * | 1997-05-23 | 1999-08-03 | Toshiba Tec Kabushiki Kaisha | Ink-jet printer having a printing medium wrapping apparatus |
| EP1009158A1 (en) * | 1998-12-08 | 2000-06-14 | Gretag Imaging Ag | Drum recording device |
| CN101450553A (en) * | 2007-11-28 | 2009-06-10 | 豪迈木材加工系统公司 | Device for refining workpiece |
| CN101722723B (en) * | 2008-10-24 | 2012-12-26 | 梁健 | Digital ink-jet textile printing machine |
| CN102180006B (en) * | 2011-02-15 | 2014-02-12 | 北京美科艺数码科技发展有限公司 | Ink-jet printer and printing method |
| WO2013165003A1 (en) * | 2012-05-01 | 2013-11-07 | コニカミノルタ株式会社 | Image formation device |
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| CN108189578A (en) | 2018-06-22 |
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Granted publication date: 20200410 Termination date: 20211228 |