WO2017155065A1 - 印刷装置 - Google Patents
印刷装置 Download PDFInfo
- Publication number
- WO2017155065A1 WO2017155065A1 PCT/JP2017/009596 JP2017009596W WO2017155065A1 WO 2017155065 A1 WO2017155065 A1 WO 2017155065A1 JP 2017009596 W JP2017009596 W JP 2017009596W WO 2017155065 A1 WO2017155065 A1 WO 2017155065A1
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- WO
- WIPO (PCT)
- Prior art keywords
- medium
- unit
- guide surface
- guide
- printing
- Prior art date
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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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0015—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form for treating before, during or after printing or for uniform coating or laminating the copy material before or after printing
- B41J11/002—Curing or drying the ink on the copy materials, e.g. by heating or irradiating
- B41J11/0021—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation
- B41J11/00216—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using irradiation using infrared [IR] radiation or microwaves
-
- 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
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
-
- 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
- B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
- B41J15/04—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles
- B41J15/046—Supporting, feeding, or guiding devices; Mountings for web rolls or spindles for the guidance of continuous copy material, e.g. for preventing skewed conveyance of the continuous copy material
-
- 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
- B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
- B41J2/01—Ink jet
- B41J2/135—Nozzles
- B41J2/14—Structure thereof only for on-demand ink jet heads
- B41J2/14201—Structure of print heads with piezoelectric elements
- B41J2/14233—Structure of print heads with piezoelectric elements of film type, deformed by bending and disposed on a diaphragm
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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
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H20/00—Advancing webs
- B65H20/14—Advancing webs by direct action on web of moving fluid
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H23/00—Registering, tensioning, smoothing or guiding webs
- B65H23/04—Registering, tensioning, smoothing or guiding webs longitudinally
- B65H23/28—Registering, tensioning, smoothing or guiding webs longitudinally by longitudinally-extending strips, tubes, plates, or wires
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/40—Type of handling process
- B65H2301/44—Moving, forwarding, guiding material
- B65H2301/441—Moving, forwarding, guiding material by vibrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/513—Modifying electric properties
- B65H2301/5133—Removing electrostatic charge
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2301/00—Handling processes for sheets or webs
- B65H2301/50—Auxiliary process performed during handling process
- B65H2301/51—Modifying a characteristic of handled material
- B65H2301/517—Drying material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2701/00—Handled material; Storage means
- B65H2701/10—Handled articles or webs
- B65H2701/17—Nature of material
- B65H2701/174—Textile, fibre
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
- B65H2801/00—Application field
- B65H2801/36—Plotting
Definitions
- the present invention relates to a printing apparatus such as an ink jet printer.
- printing apparatuses that print characters and images by ejecting ink onto a medium such as paper that is transported in the transport direction are known.
- Some of these printing apparatuses include a discharge guide plate (guide unit) that guides a printed medium, and a blowing unit that blows gas along the discharge guide plate (for example, Patent Documents). 1).
- a discharge guide plate guide unit
- a blowing unit that blows gas along the discharge guide plate
- printing may be performed on a medium that easily transmits gas, such as cloth or mesh tarpaulin.
- a medium that easily transmits gas such as cloth or mesh tarpaulin.
- the gas passes through the medium, an air layer cannot be formed between the medium and the discharge guide plate, and the medium may be electrostatically adsorbed on the discharge guide plate.
- the medium may be electrostatically adsorbed on the discharge guide plate.
- An object of the present invention is to provide a printing apparatus capable of suppressing the occurrence of poor conveyance of a medium in a guide unit that guides a printed medium regardless of the type of the medium.
- a printing apparatus that solves the above problems includes a conveyance unit that conveys a medium in a conveyance direction, a printing unit that performs printing on the medium conveyed by the conveyance unit, and a guide unit that guides the printed medium. And a vibrating portion that vibrates the guide surface, and the guide surface is formed so as to be directed vertically downward as it proceeds in the transport direction.
- the guide surface for guiding the printed medium is vibrated, it is possible to suppress the medium from being electrostatically attracted to the guide surface regardless of the type of the medium. Further, by vibrating the guide surface, the medium can be separated from the guide surface even when the medium is electrostatically attracted to the guide surface. Furthermore, since the guide surface is formed so as to be directed vertically downward as it proceeds in the transport direction, a medium on which gravity acts is easily guided in the transport direction. Thus, according to this configuration, the conveyance failure of the medium in the guide unit can be suppressed.
- the printing apparatus further includes a heating unit that heats the medium in a non-contact manner.
- a heating unit that heats the medium in a non-contact manner.
- the heating efficiency of the medium tends to decrease.
- the heating efficiency of the medium is unlikely to decrease even when a period in which the guide surface does not contact the medium occurs by vibrating the guide surface.
- the heating unit irradiates the medium with infrared rays.
- the configuration of the printing apparatus is simplified compared to a case where the medium is heated by blowing hot air to the medium.
- the printing apparatus includes: a detection unit that can detect the floating of the medium from the guide surface; and a control unit that vibrates the guide surface when the medium floats from the guide surface. It is preferable to further provide.
- the conveyance on the upstream side in the conveyance direction is continued, while the conveyance on the downstream side in the conveyance direction is stopped, so that the guide surface of the medium to be conveyed is stopped.
- a part upstream in the transport direction from the part adsorbed on the surface may float from the guide surface.
- the medium when the medium floats from the guide surface based on the detection result of the detection unit, the medium is electrostatically attracted to the guide surface by vibrating the guide surface. Can be separated from the guide surface. Accordingly, since the guide surface vibrates when a medium conveyance failure occurs, it is not necessary to constantly vibrate the guide surface.
- the printing apparatus further includes a control unit that alternately performs a transport operation for transporting the medium in the transport direction and a print operation for printing on the medium, and the control unit performs the transport operation. It is preferable that the guide surface is vibrated when it is performed, while the guide surface is not vibrated when the printing operation is performed.
- the printing medium may vibrate and the print quality may be affected.
- the guide surface is not vibrated during the printing operation, and the guide surface is vibrated during the conveyance operation, so that the occurrence of poor conveyance of the medium is suppressed while suppressing the influence on the print quality. it can.
- the printing apparatus further includes a transport operation for transporting the medium in the transport direction, a print operation for printing on the medium, and a control unit that vibrates the guide surface, and the control unit includes the transport operation.
- the guide surface is vibrated both when performing the printing operation and when performing the printing operation.
- the guide surface is vibrated both when the printing operation is performed and when the conveyance operation is performed.
- vibration By applying vibration, heating of the medium after printing is promoted, and for example, drying of a printing material such as ink ejected on the medium after printing is promoted. Therefore, it is possible to increase the printing speed by increasing the conveyance speed of the medium, or to reduce the set temperature of the heating unit to reduce the thermal damage to the medium and the power consumption of the heating unit, while preventing the conveyance of the medium. Generation can be suppressed.
- 1 is a side view illustrating a schematic configuration of a printing apparatus according to an embodiment.
- the side view which expanded the guide part and the heating part of the said printing apparatus.
- 6 is a flowchart illustrating a processing routine executed by the control unit of the printing apparatus to vibrate a guide surface.
- the side view which shows a mode that a guide surface vibrates in the said printing apparatus.
- the schematic diagram which shows the surface of the medium heated by the heating part.
- the flowchart which shows the process routine performed in order that the control part of another modification may vibrate a guide surface.
- the printing apparatus of this embodiment is an ink jet printer that forms characters and images by ejecting ink onto a print medium.
- the printing apparatus 10 includes a feeding unit 20 that feeds out the medium M, a support unit 30 that supports the medium M, a transport unit 40 that transports the medium M, and a printing unit 50 that performs printing on the medium M. And a heating unit 60 that heats the medium M.
- the width direction of the printing apparatus 10 is “width direction X”, the direction in which the medium M is conveyed is “conveyance direction Y”, and the vertical direction of the printing apparatus 10 is “vertical direction Z”.
- the width direction X is a direction intersecting (orthogonal) with both the transport direction Y and the vertical direction Z.
- the feeding unit 20 includes a holding member 21 that rotatably holds the roll body R around which the medium M is wound.
- the holding member 21 holds different types of media M and roll bodies R having different dimensions in the width direction X.
- the roll M is rotated in one direction (counterclockwise in FIG. 1) so that the medium M unwound from the roll R is fed out toward the support unit 30.
- the support unit 30 includes a first support unit 31, a second support unit 32, and a guide unit 33 that constitute a conveyance path of the medium M, a vibration unit 34 that vibrates the first support unit 31, and the guide unit 33. And a vibrating section 34 that vibrates.
- the first support part 31, the second support part 32, and the guide part 33 are arranged so as to be aligned in the transport direction Y of the medium M.
- the first support unit 31 guides the medium M fed from the feeding unit 20 toward the second support unit 32, and the second support unit 32 guides (supports) the medium M on which printing is performed.
- the guiding unit 33 guides the printed medium M toward the downstream side in the transport direction.
- the transport unit 40 includes a drive roller 41 and a driven roller 42 having the width direction X as an axial direction, and a transport motor 43 that drives the drive roller 41.
- the driving roller 41 is disposed vertically below the conveyance path of the medium M
- the driven roller 42 is disposed vertically above the conveyance path of the medium M.
- the drive roller 41 is rotated while the medium M is sandwiched between the drive roller 41 and the driven roller 42, and the medium M is transported in the transport direction Y.
- the printing unit 50 includes a guide shaft 51 extending in the width direction X, a carriage 52 supported by the guide shaft 51, and an ejection unit 53 that ejects ink onto the medium M.
- the carriage 52 reciprocates along the width direction X along the guide shaft 51 by driving a carriage motor (not shown).
- the discharge unit 53 is a discharge head in which a plurality of nozzles are formed, and is supported by the carriage 52 so as to face the medium M supported by the second support unit 32.
- the printing unit 50 performs printing for one pass on the medium M conveyed by the conveyance unit 40 by ejecting ink from the ejection unit 53 while moving the carriage 52 in the width direction X.
- the guide portion 33 is disposed at a distance from the second support portion 32 in the transport direction Y.
- the guide part 33 has the guide surface 35 formed so that it may advance to a vertically downward direction as it goes to the conveyance direction Y.
- the guide surface 35 may be a flat surface or a curved surface.
- the vibration part 34 is provided in the guide part 33 on the opposite side to the side on which the guide surface 35 is formed. Note that only one vibration part 34 may be provided at the center in the width direction X of the guide part 33, or a plurality of vibration parts 34 may be provided across the width direction X of the guide part 33.
- the vibration unit 34 vibrates the medium M guided by the guide surface 35 by vibrating the guide unit 33. In this embodiment, since the guide surface 35 vibrates when the guide portion 33 vibrates, “the guide surface 35 vibrates” is also referred to as “the guide portion 33 vibrates”.
- the vibration part 34 should just vibrate the guide part 33, and the following can be mentioned as a vibration generation system of the vibration part 34, for example.
- the vibration generation method by the vibration unit 34 may be a method in which vibration is generated by driving a motor having a biased weight attached to the output shaft (ERM: Eccentric Rotating Mass method).
- ERM Eccentric Rotating Mass method
- another vibration generation method by the vibration unit 34 uses a vibration generated in the coil by temporally changing the difference between the electromagnetic force corresponding to the current value flowing through the coil and the repulsive force of the coil and the magnet ( LRA: Linear Resonant Actuator method).
- the vibration generation method by the vibration part 34 is good also as a method using the vibration generate
- the vibration generation method by the vibration unit 34 may be a method in which vibration is generated by a vibrator that performs periodic motion using a high-pressure gas as a power source.
- the vibration unit 34 causes the guide unit 33 to cross the guide surface 35 with the guide surface 35 (preferably, a direction orthogonal to the guide surface 35) with a vibration frequency of several tens to several thousand Hz and an amplitude of less than 1 mm. It is preferable to vibrate.
- the vibration unit 34 is preferably vibrated at, for example, 15 m / S 2 or less, and more preferably 10 m / S 2 or less, so that the amplitude of the guide plate 33 is less than 1 mm.
- the purpose of vibrating the guide portion 33 is to pull the medium M adsorbed on the guide surface 35 away from the guide surface 35, the medium M and the guide portion 33 are prevented from having the same vibration mode.
- the vibration unit 34 may vibrate the guide unit 33 in a vibration mode in which the medium M guided by the guide unit 33 can be temporarily separated from the guide surface 35.
- a transparent PET (Polyethylene Terephthalate) film is mentioned, for example.
- the first support portion 31 also includes a vibrating portion 34 on the side opposite to the guide surface (the surface on which the medium M is guided), and is provided on the guide portion 33 described above. It has the same configuration as that of the vibrating part 34 and can exert its action.
- the heating unit 60 is configured to dry the printed medium M, and is disposed so as to face the guide surface 35 of the guide unit 33.
- the heating unit 60 includes a lower frame 61 formed over the width direction X of the guide unit 33 and an upper frame 62 that covers the lower frame 61 from above in the vertical direction.
- the lower frame 61 is provided with a recess 63 that is recessed toward the upper frame 62 in the width direction X.
- the heating unit 60 includes a heating element 64 having a longitudinal direction in the width direction X, a tube body 65 into which the heating element 64 is inserted, a temperature measuring unit 66 that measures the temperature of the guide surface 35 of the guide unit 33, It has.
- the heating element 64 and the pipe body 65 are disposed in the recess 63 of the lower frame 61 so as to face the guide surface 35 of the transport unit 40.
- the heat generating body 64 should just be heat-generated by electricity supply, for example, may be comprised with a heating wire etc.
- the pipe body 65 preferably has a high thermal conductivity and a high surface emissivity.
- the temperature measuring unit 66 is disposed in the recess 63 of the lower frame 61.
- the temperature measuring unit 66 measures the temperature of the detection region by detecting the amount of infrared rays emitted from the detection region provided on the guide surface 35, for example.
- the detection region may be, for example, only the region on the guide surface 35 and facing the tube 65 of the heating unit 60. However, a plurality of detection regions may be provided in the width direction X or in the transport direction Y. A plurality of them may be provided.
- in the guide surface 35 when the area
- the heating unit 60 when the tube 65 is heated by the heat generated by the heat generator 64, infrared rays corresponding to the temperature of the tube 65 are irradiated toward the guide surface 35 of the guide 33. Then, the temperature of the medium M guided on the guide surface 35 rises, and the solvent component of the ink ejected on the medium M is evaporated.
- the heating unit 60 of the present embodiment heats the medium M in a non-contact manner by irradiating the medium M with infrared rays.
- the region between the guide unit 33 and the heating unit 60 is also referred to as a “heating region HA” because it is a region heated to dry the medium M.
- the heating unit 60 includes a flow channel 71 through which a gas is circulated, a blower unit 72 that blows the gas, an intake port 73 for taking the gas into the flow channel 71, and a flow channel. And a discharge port 74 for discharging gas from 71.
- the flow path 71 is formed between the lower frame 61 and the upper frame 62 so as to be along the guide surface 35 of the guide portion 33.
- the air blower 72 is disposed in the flow channel 71 at a position closer to the discharge port 74 than the intake port 73.
- the air blower 72 blows the gas taken in from the intake port 73 side to the discharge port 74 side, thereby forming a gas flow in the first airflow direction A1 in the flow path 71.
- the blower 72 may be a centrifugal fan or an axial fan. Further, only one or a plurality of air blowing units 72 may be arranged in the width direction X.
- the intake port 73 opens toward the guide surface 35 on the upstream side in the transport direction of the guide portion 33, and the discharge port 74 opens toward the end of the guide surface 35 on the downstream side in the transport direction of the guide portion 33. Yes. For this reason, in the first airflow direction A1, it can be said that the intake port 73 opens at the upstream end of the flow channel 71 and the discharge port 74 opens at the downstream end of the flow channel 71.
- the printing apparatus 10 includes a control unit 100 that controls the apparatus in an integrated manner.
- a temperature measuring unit 66 is connected to an input side interface of the control unit 100, and an output side interface of the control unit 100 is connected to a feeding unit 20, a transport motor 43, a discharge unit 53, a vibration unit 34, a heating element 64, and the like.
- the ventilation part 72 is connected.
- the control unit 100 performs printing by alternately performing a transport operation for transporting the medium M by a unit transport amount and a print operation for ejecting ink from the ejection unit 53 while moving the carriage 52 in the width direction X.
- the unit transport amount in the transport operation is set to be less than the length of the nozzle row formed in the transport direction in the discharge unit 53, and the print operation is to perform printing for one pass.
- the control unit 100 acquires the temperature of the heating area HA based on the detection result of the temperature measuring unit 66, and the vibration unit 34 and the heating unit 60 (the heating element 64 and the air blowing unit 72) provided in the guide unit 33. Control the drive.
- the control unit 100 controls driving of the vibration unit 34 provided in the first support unit 31.
- the medium M is electrostatically attracted to the guide surface 35 due to static electricity generated by friction between the conveyed medium M and the guide surface 35. There is. Therefore, in this embodiment, when the medium M is electrostatically attracted to the guide surface 35, the control unit 100 vibrates the guide unit 33 and pulls the medium M away from the guide surface 35.
- first portion M1 a portion of the medium M that is electrostatically attracted to the guide surface 35
- second portion M2 a portion of the medium M upstream in the conveyance direction
- the control unit 100 determines that the medium M is electrostatically attracted to the guide surface 35, and guides it.
- the part 33 is vibrated.
- the control unit 100 may determine that the medium M has floated when the measured temperature of the temperature measuring unit 66 is equal to or higher than a predetermined value set in advance.
- the specified value is set to a temperature higher than the temperature of the medium M when the medium M is guided by the guide unit 33 without being attracted to the guide surface 35.
- the temperature measuring unit 66 corresponds to an example of a “detecting unit” that can detect the floating of the medium M from the guide surface 35.
- This processing routine is a processing routine that is executed every preset control cycle.
- the control unit 100 determines whether or not the medium M is lifted on the guide surface 35 of the guide unit 33 based on the detection result of the temperature measuring unit 66. (Step S11).
- the control unit 100 ends this processing routine.
- step S11 YES
- the control unit 100 drives the vibration unit 34, The guide part 33 is vibrated (step S12). Thereafter, the control unit 100 ends this processing routine.
- the conveyance operation by the conveyance unit 40 and the printing operation by the printing unit 50 are alternately performed.
- the medium M on which printing has been performed is transported downstream in the transport direction while being guided by the guide unit 33.
- the heating unit 60 energization to the heating element 64 is started. For this reason, infrared rays are radiated from the tube 65 heated by the heating element 64 toward the medium M guided to the guide unit 33, and the medium M is heated. For this reason, the solvent component of the ink ejected onto the medium M evaporates, and the characters and images printed on the medium M are fixed on the medium M.
- the drive of the ventilation part 72 is started.
- the gas is taken into the flow channel 71 through the intake port 73, and the gas flows from the flow channel 71 through the discharge port 74. Discharged.
- the gas in the vicinity of the intake port 73 is taken into the flow channel 71 through the intake port 73, so that the first airflow direction A1 is opposite to the second airflow direction A2.
- a gas flow is generated.
- the gas in the heating area HA containing a large amount of the solvent vapor of the ink is taken into the flow path 71 through the intake port 73 and then passed through the discharge port 74. And discharged outside the heating area HA. For this reason, when the printing is continued, the solvent vapor amount of the ink contained in the gas in the heating area HA is suppressed from gradually increasing, and the decrease in the drying efficiency of the medium M is suppressed.
- the following effects can be obtained. (1) By vibrating the guide surface 35 that guides the printed medium M, the medium M is prevented from being electrostatically attracted to the guide surface 35, or the medium M electrostatically attracted to the guide surface 35 is guided. It can be pulled away from the surface 35. For this reason, static electricity is generated by sliding with the guide surface 35 as in a mesh-like medium M made of resin. On the other hand, even if the medium M is easily permeable to gas, electrostatic adsorption to the guide surface 35 is caused. It can be conveyed while being suppressed.
- the guide surface 35 is formed so as to be directed vertically downward as it proceeds in the transport direction Y, the medium M on which gravity acts is easily guided in the transport direction Y. In this way, the conveyance failure of the medium M in the guide part 33 can be suppressed.
- the configuration of the printing apparatus 10 is simplified as compared with the case where the medium M is heated by blowing hot air to the medium M. be able to.
- the guide surface 35 of the guide portion 33 is a flat surface having no unevenness, the medium M is suppressed from being caught by the unevenness when the medium M is transported, and the transport failure of the medium M is less likely to occur.
- the same effect as the suppression effect of the conveyance failure of the medium M due to the vibration of the vibration part 34 provided in the guide part 33 described above is also obtained by the vibration of the vibration part 34 provided in the first support part 31.
- the conveyance of the medium M in the conveyance path of the printing apparatus 10 can be further stabilized.
- by providing a heating unit that heats the medium M guided to the first support unit 31, the medium M just before being printed by the printing unit 50 guided to the second support unit 32 is preheated. Printing quality can be improved.
- the medium M guided to the first support portion 31 may be separated from the guide surface of the first support portion 31 due to the vibration of the vibration portion 34, so that the heating means is the first support portion.
- the medium M (and the first support part 31) be heated in a non-contact manner by, for example, a method of irradiating the medium M with infrared rays, as in the heating unit 60 described above, instead of being disposed at 31. .
- the heating unit 60 may be a heating unit that does not include the flow channel 71 and the air blowing unit 72. Even in this case, since the guide portion 33 is formed so as to move vertically downward as it goes in the transport direction Y, the gas warmed in the heating area HA rises vertically upward along the guide surface 35. It's easy to do. Therefore, it can suppress that the solvent vapor
- the boundary layer BL of temperature and humidity around the ink droplet Id ejected onto the medium M. And the solvent component of the ink droplet Id may be difficult to evaporate. Even in such a case, since the gas in the boundary layer BL and the gas outside the boundary layer BL are mixed by vibrating the guide portion 33 as shown by a thick line in FIG. 5, the boundary layer BL is destroyed. can do.
- the control unit 100 may not vibrate the transport unit 40 during the printing operation.
- step S21 determines whether or not the transport operation is being performed (step S21), and when the transport operation is not being performed (step S21: NO), that is, during the print operation. If there is, this processing routine is terminated.
- step S21: YES when the conveyance operation is being performed (step S21: YES), the control unit 100 drives the vibration unit 34 to vibrate the guide unit 33 (step S22).
- the transport since the medium M does not vibrate due to the vibration of the guide unit 33 during the printing operation, it is possible to suppress a decrease in print quality due to the vibration of the medium M.
- the transport In the case where the guide surface 35 is vibrated only during the transport operation, the transport may be started after the vibration of the guide unit 33 is started, or the vibration of the medium M may be started after the transport is started. Good.
- the guide 33 may be vibrated both when the printing operation is performed and when the conveyance operation is performed.
- the guide part 33 is vibrated by the vibration part 34 under a vibration condition that does not affect the support mode of the medium M in the second support part 32, that is, does not adversely affect the print quality.
- the medium M can be transported at a higher speed to increase printing efficiency, or the set temperature of the heating unit 60 can be reduced to suppress thermal damage to the medium M and power consumption of the heating unit 60 while maintaining the medium. The occurrence of M conveyance failure can be suppressed.
- step S11 of the flowchart shown in FIG. 5 may be performed between the processes of step S21 and step S22 of the flowchart shown in FIG.
- the guide surface 35 may be constantly vibrated during the transport operation or the printing operation.
- it in order to prevent the vibration of the guide surface 35 from being transmitted to the medium M supported by the second support portion 32, it is downstream of the printing portion 50 and upstream of the guide portion 33 in the transport direction Y. It is preferable to provide a configuration that suppresses transmission of vibration.
- the drive roller 41 and the driven roller 42 in the said embodiment can be mentioned, for example.
- the control part 100 may drive the vibration part 34 for every preset control cycle irrespective of the detection result of the temperature measuring part 66.
- the control unit 100 may drive the vibrating unit 34 when the transport amount of the medium M since the previous driving of the vibrating unit 34 is equal to or greater than a predetermined transport amount, or the vibrating unit 34 may be driven last time.
- the vibration unit 34 may be driven when the elapsed time since the vibration of the motor reaches a predetermined elapsed time or more.
- the printing apparatus 10 is a vibration condition setting unit that sets vibration conditions (frequency and amplitude) of the guide unit 33 and the first instruction unit 31 by the vibration unit 34 to optimum vibration conditions for each type of medium M.
- You may have the structure which has.
- the “print setting” means included in the printing apparatus 10 includes “medium type selection means”, and the excitation condition is changed based on information on the medium type designated by the operator using the “medium type selection means”.
- the printing apparatus 10 may be controlled via the control unit 100 depending on conditions.
- the temperature measuring unit 66 may be a detection unit that directly detects the amount of lifting of the medium M guided on the guide surface 35 from the guide surface 35. In this case, the control unit 100 may determine that the conveyance failure of the medium M has occurred when the amount of lifting from the guide surface 35 is equal to or greater than the predetermined amount of lifting.
- a detection unit include a reflection type or a transmission type photoelectric sensor.
- An imaging unit that captures images of the front or back surface of the medium M over time when the medium M is transported may be provided.
- the control unit 100 calculates the actual transport amount that is the actual transport amount of the medium M based on the image captured by the imaging unit, and calculates the control transport amount based on the rotation amount of the transport motor 43.
- the control unit 100 preferably determines that a conveyance failure of the medium M has occurred when the difference between the control conveyance amount and the actual conveyance amount has occurred, and drives the vibration unit 34.
- the heating part 60 may warm the airflow of the heating area HA. In this case, the medium M is heated by heat transfer by the airflow. -The heating part 60 does not need to be provided. Even in this case, the occurrence of poor conveyance of the medium M can be suppressed.
- the guide surface 35 does not have to guide the medium M while contacting the back surface of the medium M (the surface opposite to the printing surface). That is, the guide unit 33 may guide the medium M while being in contact with the surface (printing surface) of the medium M.
- the guide surface 35 may be formed with a plurality of ribs having the conveyance direction Y as the longitudinal direction and the width direction X as the short direction, or may be formed with a plurality of recesses 63 or projections. In this case, the guide surface 35 is formed by the plurality of ribs and the tip portions of the plurality of irregularities.
- the guide surface 35 may not be formed so as to proceed vertically downward as it goes in the transport direction Y.
- it may be formed horizontally, or may be formed so as to advance vertically upward in the transport direction Y.
- the vibration part 34 does not have to vibrate all of the guide part 33 as long as at least the guide surface 35 can be vibrated.
- the vibration mode of the guide unit 33 (guide surface 35) by the vibration unit 34 may be appropriately changed according to the thickness, mass, natural frequency, or the like of the medium M to be conveyed.
- the medium M is not limited to the PET film described above, and may be a printing paper, a plastic film, or a fabric used for a textile printing apparatus. Further, the medium M may not be the long medium M fed from the roll body R. For example, a cut sheet may be used.
- the recording material used for printing is a fluid other than ink (a liquid or liquid material in which particles of functional material are dispersed or mixed in a liquid, a fluid such as a gel, or a fluid. It may include a solid that can be discharged).
- recording is performed by ejecting a liquid material in which a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. It may be configured.
- the ejection unit 53 (printing head) has a length in the width direction X that is longer than the length in the width direction X of all the media M to be printed by the printing apparatus 10 and is fixedly arranged with respect to the printing apparatus 10.
- a so-called line head may be used.
- the printing apparatus 10 is not limited to a printer that performs recording by discharging ink, and may be a non-impact printer such as a laser printer, an LED printer, or a thermal transfer printer (including a sublimation printer), An impact printer such as a dot impact printer may be used.
- a non-impact printer such as a laser printer, an LED printer, or a thermal transfer printer (including a sublimation printer)
- An impact printer such as a dot impact printer may be used.
- the technical idea that can be grasped from the embodiment and the modified examples will be added below.
- the printed medium is heated by infrared irradiation, if there is no gas flow around the medium or the gas flow around the medium is weak, the boundary of temperature and humidity around the medium. A layer may be formed and the medium may be difficult to dry. That is, when the medium is heated by infrared irradiation, there is a problem that the drying efficiency of the medium is lowered depending on the environment around the medium.
- a printing apparatus that solves the above problems includes a conveyance unit that conveys a medium, a printing unit that performs printing on the medium conveyed by the conveyance unit, a guide unit that includes a guide surface that guides the printed medium, The heating part which irradiates a medium with infrared rays, and the vibration part which vibrates the said guide surface are provided.
- DESCRIPTION OF SYMBOLS 10 ... Printing apparatus, 20 ... Feeding part, 21 ... Holding member, 30 ... Support part, 31 ... 1st support part, 32 ... 2nd support part, 33 ... Guide part, 34 ... Vibrating part, 35 ... Guide surface , 40 ... transport section, 41 ... drive roller, 42 ... driven roller, 43 ... transport motor, 50 ... printing section, 51 ... guide shaft, 52 ... carriage, 53 ... discharge section, 60 ... heating section, 61 ... lower frame, 62 ... upper frame, 63 ... recess, 64 ... heating element, 65 ... tube body, 66 ... temperature measuring part (an example of a detection part), 71 ... flow path, 72 ...
- air blowing part 73 ... intake port, 74 ... exhaust Outlet, 100 ... control unit, A1 ... first air flow direction, A2 ... second air flow direction, BL ... boundary layer, HA ... heating region, Id ... ink droplet, M ... medium, M1 ... first part, M2 ... second Part, R ... roll body, X ... width direction, Y ... conveying direction, Z ... vertical direction.
Landscapes
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Ink Jet (AREA)
- Feeding Of Articles By Means Other Than Belts Or Rollers (AREA)
- Handling Of Sheets (AREA)
- Handling Of Continuous Sheets Of Paper (AREA)
- Controlling Sheets Or Webs (AREA)
- Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
- Controlling Rewinding, Feeding, Winding, Or Abnormalities Of Webs (AREA)
Abstract
Description
上記課題を解決する印刷装置は、媒体を搬送方向に搬送する搬送部と、前記搬送部が搬送する前記媒体に印刷を行う印刷部と、印刷済みの前記媒体を案内する案内面を有する案内部と、前記案内面を振動させる振動部と、を備え、前記案内面は、前記搬送方向に進むに連れて鉛直下方に向かうように形成されている。
例えば、媒体を案内する案内面からの伝熱によって当該媒体を加熱する場合、すなわち、案内面が媒体を接触加熱する場合には、案内面を振動させると、案内面が媒体に接触しない期間が生じることで、媒体の加熱効率が低下しやすい。これに対し、上記構成では、媒体を非接触加熱するため、案内面を振動させることで、案内面が媒体に接触しない期間が生じても、媒体の加熱効率が低下しにくい。こうして、媒体を加熱する場合であっても、案内面の振動によって、媒体の加熱効率が低下することを抑制できる。
上記構成によれば、媒体に赤外線を照射することで当該媒体が加熱されるため、媒体に熱風を送風することで当該媒体を加熱する構成とする場合に比較して、印刷装置の構成を簡素化することができる。また、媒体を赤外線の照射のみによって加熱したとしても、案内面の振動によって、媒体の周囲に形成される温度や湿度の境界層が壊れやすく、媒体が乾燥しにくくなることを抑制できる。
図2に示すように案内部33は、第2の支持部32と搬送方向Yにおいて間隔をおいて配置されている。また、案内部33は、搬送方向Yに向かうに連れて鉛直下方に進むように形成される案内面35を有している。なお、案内面35は、平面であってもよいし、湾曲面であってもよい。
なお、上述した案内部33における振動部34の構成の作用が発揮される媒体Mの具体例として、例えば、透明なPET(Polyethylene Terephthalate)フィルムが挙げられる。
図2に示すように、加熱部60は、印刷済みの媒体Mを乾燥するための構成であり、案内部33の案内面35と対向するように配置されている。加熱部60は、案内部33の幅方向Xに亘って形成された下部フレーム61と、下部フレーム61を鉛直上方から覆う上部フレーム62と、を備えている。下部フレーム61には、上部フレーム62に向かって凹設された凹部63が幅方向Xに亘って設けられている。
図1に示すように、印刷装置10は、装置を統括的に制御する制御部100を備えている。制御部100の入力側のインターフェースには、測温部66が接続され、制御部100の出力側のインターフェースには、繰出部20、搬送モーター43、吐出部53、振動部34、発熱体64及び送風部72が接続されている。
(1)印刷済みの媒体Mを案内する案内面35を振動させることで、媒体Mが案内面35に静電吸着することを抑制したり、案内面35に静電吸着した媒体Mを当該案内面35から引き離したりすることができる。このため、樹脂製のメッシュ状の媒体Mのように、案内面35との摺動によって静電気が発生する一方で、気体を透過しやすい媒体Mであっても、案内面35に対する静電吸着を抑制しつつ搬送することができる。
また、第1の支持部31に案内されている媒体Mを加熱する加熱手段を設けることにより、第2支持部32に案内され印刷部50により印刷が行われる直前の媒体Mを予備加熱することができ、印刷品質を向上させることができる。この場合、第1の支持部31に案内された媒体Mは、振動部34による振動で第1の支持部31の案内面から離れる瞬間が生じる虞があるので、加熱手段は、第1支持部31に配置するのではなく、上述した加熱部60と同様に、媒体Mに赤外線を照射する方式などにより非接触で媒体M(および第1の支持部31)を加熱するものであることが好ましい。
・加熱部60は、流路71及び送風部72を備えない加熱部であってもよい。この場合であっても、案内部33が搬送方向Yに向かうに連れて鉛直下方に進むように形成されているため、加熱領域HAで温められた気体が案内面35に沿って鉛直上方に上昇しやすい。したがって、加熱領域HAの気体中のインクの溶媒蒸気量が次第に増大することを抑制し、インクの乾燥効率が低下することを抑制できる。なお、上記実施形態の加熱領域HAにおいては、煙突効果による対流作用も期待できる。
・搬送動作中に限り案内面35を振動させる場合には、案内部33の振動を開始させてから搬送を開始させてもよいし、搬送を開始させてから媒体Mの振動を開始させてもよい。
・加熱部60を設けなくてもよい。この場合であっても、媒体Mの搬送不良の発生を抑制することができる。
・振動部34による案内部33(案内面35)の振動態様は、搬送する媒体Mの厚み、質量又は固有振動数などに応じて適宜に変更してもよい。
さて、印刷済みの媒体を赤外線の照射によって加熱する場合において、媒体の周囲に気体の流れが生じなかったり、媒体の周囲に生じる気体の流れが弱かったりすると、媒体の周囲に温度や湿度の境界層が形成され、媒体が乾燥しにくくなることがある。すなわち、媒体を赤外線の照射によって加熱する場合には、媒体の周囲の環境によって、媒体の乾燥効率が低下するという課題がある。
Claims (6)
- 媒体を搬送方向に搬送する搬送部と、
前記搬送部が搬送する前記媒体に印刷を行う印刷部と、
印刷済みの前記媒体を案内する案内面を有する案内部と、
前記案内面を振動させる振動部と、を備え、
前記案内面は、前記搬送方向に進むに連れて鉛直下方に向かうように形成されている
ことを特徴とする印刷装置。 - 前記媒体を非接触で加熱する加熱部をさらに備える
ことを特徴とする請求項1に記載の印刷装置。 - 前記加熱部は、前記媒体に赤外線を照射する
ことを特徴とする請求項2に記載の印刷装置。 - 前記案内面からの前記媒体の浮きを検出可能な検出部と、
前記案内面からの前記媒体の浮きが生じた場合に、前記案内面を振動させる制御部と、をさらに備える
ことを特徴とする請求項1~請求項3のうち何れか一項に記載の印刷装置。 - 前記媒体を前記搬送方向に搬送する搬送動作と、前記媒体に印刷を行う印刷動作と、を交互に行わせる制御部をさらに備え、
前記制御部は、前記搬送動作を行わせる場合には前記案内面を振動させる一方、前記印刷動作を行わせる場合には前記案内面を振動させない
ことを特徴とする請求項1~請求項4のうち何れか一項に記載の印刷装置。 - 前記媒体を前記搬送方向に搬送する搬送動作と、前記媒体に印刷を行う印刷動作と、前記案内面を振動させる制御部をさらに備え、
前記制御部は、前記搬送動作を行わせるときと前記印刷動作とを行わせるときとの両方で、前記案内面を振動させる
ことを特徴とする請求項1~請求項4のうち何れか一項に記載の印刷装置。
Priority Applications (4)
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EP17763405.2A EP3427964B1 (en) | 2016-03-11 | 2017-03-09 | Printing device |
JP2018504601A JP6801706B2 (ja) | 2016-03-11 | 2017-03-09 | 印刷装置 |
CN201780016209.9A CN108712968B (zh) | 2016-03-11 | 2017-03-09 | 印刷装置 |
US16/083,356 US20190084304A1 (en) | 2016-03-11 | 2017-03-09 | Printing device |
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JP2016047944 | 2016-03-11 | ||
JP2016-047944 | 2016-03-11 |
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US11351799B2 (en) | 2019-12-26 | 2022-06-07 | Seiko Epson Corporation | Recording device with knocking unit for knocking medium during recording |
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CN110143062B (zh) * | 2019-05-16 | 2021-07-23 | 杭州巨牛科技有限公司 | 一种打印纸输送系统及具有该输送系统的打印机 |
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JPWO2017155065A1 (ja) | 2019-02-07 |
CN108712968B (zh) | 2021-02-05 |
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EP3427964A1 (en) | 2019-01-16 |
CN108712968A (zh) | 2018-10-26 |
EP3427964B1 (en) | 2023-08-02 |
US20190084304A1 (en) | 2019-03-21 |
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