WO2011024464A1 - インクジェットプリンタ - Google Patents
インクジェットプリンタ Download PDFInfo
- Publication number
- WO2011024464A1 WO2011024464A1 PCT/JP2010/005280 JP2010005280W WO2011024464A1 WO 2011024464 A1 WO2011024464 A1 WO 2011024464A1 JP 2010005280 W JP2010005280 W JP 2010005280W WO 2011024464 A1 WO2011024464 A1 WO 2011024464A1
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- WIPO (PCT)
- Prior art keywords
- temperature
- print medium
- carriage
- ink
- 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
- B41J11/0024—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using conduction means, e.g. by using a heated platen
- B41J11/00244—Means for heating the copy materials before or during printing
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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
- B41J11/0022—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using convection means, e.g. by using a fan for blowing or sucking air
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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
- B41J11/0024—Curing or drying the ink on the copy materials, e.g. by heating or irradiating using conduction means, e.g. by using a heated platen
- B41J11/00242—Controlling the temperature of the conduction means
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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
- B41J11/02—Platens
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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
- 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
- B41J15/16—Means for tensioning or winding the web
- B41J15/165—Means for tensioning or winding the web for tensioning continuous copy material by use of redirecting rollers or redirecting nonrevolving guides
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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
- B41J19/00—Character- or line-spacing mechanisms
- B41J19/18—Character-spacing or back-spacing mechanisms; Carriage return or release devices therefor
- B41J19/20—Positive-feed character-spacing mechanisms
- B41J19/202—Drive control means for carriage movement
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—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
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—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
- B41J2/17—Ink jet characterised by ink handling
- B41J2/175—Ink supply systems ; Circuit parts therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
- B41J2/005—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
- B41J2/21—Ink jet for multi-colour printing
- B41J2/2132—Print quality control characterised by dot disposition, e.g. for reducing white stripes or banding
- B41J2/2139—Compensation for malfunctioning nozzles creating dot place or dot size errors
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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
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
Definitions
- the present invention relates to a printing target in which fine particles of ink are attached to a print medium from a nozzle while moving a carriage holding a printer head on which a number of nozzles are formed relative to the print medium held on the medium support.
- the present invention relates to an ink jet printer that draws information such as characters, figures, patterns, and photographs on a surface.
- the temperature management in the drawing area is important not only for the printer head but also for the printing medium because of the configuration in which fine particles of liquid ink are adhered to the printing medium to perform high-definition drawing. Further, in order to ensure high print quality and productivity, it is required to fix and dry the ink attached to the print medium as quickly as possible.
- the conventional ink jet printer is provided with a heater for heating the platen to raise the temperature of the print medium, and a thermistor (temperature detecting means) for detecting the temperature of the heated platen.
- the platen is heated and held at a constant temperature in accordance with a temperature deviation between the detected temperature and a desired set temperature set by an operator (for example, see Patent Document 1).
- the temperature of the platen itself is adjusted to a desired set temperature, but actually, depending on the type of printing medium and ink used, or the printing medium and platen. Temperature difference between the platen temperature and the print medium surface temperature. In other words, the surface temperature of the print medium thermally conducted from the platen is not controlled at all. Depending on the level of the surface temperature, the ink fixing property is deteriorated, and ink bleeding and color unevenness may occur. There is a problem that print quality may be deteriorated.
- the present invention has been made in view of such problems, and an object of the present invention is to provide an ink jet printer having a configuration capable of adjusting the surface temperature of a print medium to an optimum temperature for adhesion of ink.
- an ink jet printer includes a medium support part (for example, the platen 20 in the embodiment) that supports a print medium, a carriage having a printer head that ejects ink, and a medium support part.
- a carriage moving mechanism that relatively moves the carriage along the print target surface of the print medium supported by the heater, heater means for heating and controlling the print medium (for example, the print heater 70 in the embodiment), and the print target surface.
- Temperature detection means (for example, the non-contact type temperature sensor 80 in the embodiment) that detects the surface temperature of the print medium along the relative movement direction along with the relative movement by the carriage, and the temperature detected by the temperature detection means.
- the surface temperature of the print medium is set to a predetermined set temperature by driving the heater means based on Temperature control means for controlling the node (e.g., control the temperature controller 106 and SSR90 unit 100 in the embodiment) configured to include a.
- the heater means heats the temperature of each of the divided areas of the print medium along the relative movement direction (for example, the print heaters 71 to 75 in the embodiment).
- the temperature control means (for example, the temperature control unit 106 ′ and the SSRs 91 to 95 in the embodiment) are respectively divided heaters corresponding to each other based on the detected temperature detected for each region along the relative movement direction by the temperature detection means. It is preferable that the device is driven to perform control to make the surface temperature of the print medium uniform at a predetermined set temperature.
- the temperature control means controls the discharge amount by the printer head with respect to the surface temperature of the divided area to which the discharge amount of ink exceeding a predetermined threshold is attached by the printer head. It is preferable to perform control to adjust the corresponding temperature increase to a temperature obtained by adding to a predetermined set temperature.
- the temperature detection unit detects the surface temperature of the print medium along the relative movement direction in accordance with the relative movement of the carriage by the carriage movement mechanism. Based on the temperature detected by the temperature detecting means, the heater means can be driven and feedback controlled so that the surface temperature of the print medium becomes a desired set temperature. For this reason, it is possible to always adjust the print medium to a desired set temperature while preventing over-adjustment of the temperature due to the difference between the surface temperature of the print medium and the temperature of the medium support portion. The fixability of the ink ejected to the print medium is improved, and high-precision printing can be performed on the print medium.
- the heater means is composed of divided heater means for heating and controlling the temperature of each of the divided areas of the print medium along the relative movement direction of the carriage.
- the surface temperature of the print medium is detected for each of the divided areas of the divided heater means by the temperature detecting means, and the surface temperature distribution of the print medium is equalized to a desired set temperature based on the detected temperature.
- feedback control can be performed by driving the heater means.
- the surface temperature can be made uniform over the entire drawing area of the print medium, so that the fixability of the ink ejected from the printer head to the print medium can be stabilized uniformly throughout the drawing area and the print quality can be maintained. Can be further improved.
- the temperature control means sets the temperature increase according to the discharge amount by the printer head to the predetermined set temperature. It is preferable to perform control to adjust to the temperature added to.
- the ink can be quickly fixed and dried in the divided area where the amount of ink adhering to the print medium M is large, so that high print quality and productivity can be ensured.
- the print medium is pre-heated in advance with a heating amount corresponding to the ink discharge amount, and the set temperature is kept relatively low for the divided area where the ink adhesion amount is small on the print medium M to reduce the power consumption. Since it can be reduced, it is also possible to exert an energy saving effect.
- FIG. 2 is a schematic front sectional view of a platen constituting the ink jet printer according to the first embodiment.
- FIGS. 1 and 2 are perspective views, respectively, and FIG. 3 shows the main configuration of the apparatus main body of the inkjet printer.
- the ink jet printer P is broadly divided into a horizontally long rectangular box-shaped device main body 1 that performs printing processing of characters and figures on a printing target surface of a sheet-like printing medium M such as a vinyl chloride sheet called a medium. And a support portion 2 that supports the apparatus main body 1 at a height position where it is easy to work, and before and after the left and right leg portions 2a constituting the support portion 2, printing in an unprocessed state wound in a roll shape
- a feeding mechanism 3 for feeding the medium M to the apparatus main body 1 and a winding mechanism 4 for winding the printing medium M that has been printed are provided.
- the apparatus main body 1 includes a body 10 serving as a mounting base for each mechanism, a platen 20 that supports the print medium M, a medium moving mechanism 30 that moves the print medium M supported by the platen 20 back and forth, and an upper part of the platen 20.
- a carriage 40 that is movably supported left and right, a carriage moving mechanism 50 that moves the carriage 40 to the left and right relative to the print medium M supported by the platen 20, and a print target surface of the print medium M.
- the body 10 includes a main body frame 11 including a lower frame 11L provided with a platen 20, a feed roller 31 of the media moving mechanism 30, and the like, and an upper frame 11U provided with a support structure for the roller assembly 35 and the carriage 40 of the media moving mechanism 30.
- the medium insertion portion 15 having a horizontally long window shape through which the print medium M can be inserted back and forth is formed between the upper frame 11U and the lower frame 11L.
- the body 10 is surrounded by a front cover 13 a that covers the central portion of the main body frame 11 and a side cover 13 b that covers the left and right sides of the main body frame 11, and is configured as a horizontally-long rectangular box as a whole.
- the platen 20 is located in the left and right center portion of the body 10 and extends in the front and rear sides below the media insertion portion 15 and is provided on the lower frame 11L.
- a medium support portion 21 that horizontally supports the medium M is formed.
- the platen 20 includes a main platen 22 having a media support portion 21 and a main platen 22.
- the rear platen 23 extends rearward and is provided on the rear surface side of the body 10
- the front platen 24 extends forward from the main platen 22 and is provided on the front end surface of the body 10, and the like.
- Each of the front end sides of the plate 24 extends downward in a smooth curve, and the print medium M introduced into the platen 20 from the feed mechanism 3 smoothly moves on the upper surface of the rear platen 23 to the main platen 22 to the front platen 24 and winds up.
- the mechanism 4 is wound up.
- a plurality of fans 26 that blow outside air to the discharge portion of the print medium M to promote drying of the ink attached to the print medium M are arranged at substantially equal intervals in the front lower portion (front discharge area) of the front platen 24. Is provided.
- the medium support portion 21 of the main platen 22 is formed with a large number of small-diameter suction holes, and a decompression chamber 25 is provided below the medium support portion 21 so as to be set to a negative pressure. By applying the pressure, the print medium M is sucked and held on the medium support portion 21 so that the position of the print medium M does not shift during processing such as printing or cutting.
- the printing medium M supported on the media support unit 21 is heated over almost the entire drawing area on the back side of the main platen 22.
- a print heater (electric heater) 70 for improving the fixability of the ink particles ejected from the printer head 60 is incorporated.
- the media moving mechanism 30 is provided with a cylindrical feed roller 31 provided so as to be rotatable about a rotation shaft extending in the left-right direction, an upper peripheral surface exposed to the media support portion 21 of the platen 20, and a feed roller 31.
- a timing motor 32 that is stretched between a servo pulley 33 that rotates and a driven pulley that is coupled to the shaft end of the feed roller 31 and a drive pulley that is coupled to the shaft end of the servo motor 33.
- a plurality of roller assemblies 35 each having a rotatable pinch roller 36 and disposed at predetermined intervals on the left and right above the feed roller 31 are mainly configured.
- the roller assembly 35 is configured to be displaceable between a clamp position where the pinch roller 36 is elastically engaged with the feed roller 31 and an unclamp position where the pinch roller 36 is spaced above the feed roller 31.
- the servo motor 33 is driven to rotate, so that the print medium M corresponds to the rotation angle of the feed roller 31.
- the sheet is conveyed back and forth by a feed amount corresponding to a feed amount, that is, a drive control value output from the control unit 100 to the servomotor 33.
- a feed amount corresponding to a feed amount that is, a drive control value output from the control unit 100 to the servomotor 33.
- a guide rail 45 is attached to the upper frame 11U located above the media insertion portion 15 so as to extend in the left and right directions in parallel with the feed roller 31, and the carriage 40 holding a plurality of printer heads 60 moves to the left and right on the guide rail 45. It is supported freely.
- the guide rail 45 is a support rail of a linear motion bearing also referred to as a linear motion guide or a linear guide, and the carriage 40 is fixed to a slide block (also referred to as a ball housing or the like) fitted and supported by the guide rail 45.
- a slide block also referred to as a ball housing or the like
- the carriage moving mechanism 50 is applied to a drive pulley 51 and a driven pulley 52 provided near the left and right side ends of the guide rail 45, a servo motor 53 that rotates the drive pulley 51, and a drive pulley 51 and a driven pulley 52, respectively.
- the endless belt-like timing belt 55 is provided, and the carriage 40 is connected and fixed to the timing belt 55.
- the rotation of the servo motor 53 is controlled by the control unit 100, and the carriage 40 is moved left and right by a feed amount corresponding to the drive control value output from the control unit 100 to the servo motor 53.
- the printer head 60 is provided on the lower surface of the carriage 40 with a predetermined gap from the print medium M.
- a head configuration in which four printer heads 60 in which two rows are arranged in parallel is arranged on the left and right and a total of eight nozzle rows are arranged will be exemplified.
- the control unit 100 includes an operation control program for controlling the operation of each part of the ink jet printer P, a ROM 101 in which a temperature control program for controlling the surface temperature of the printing medium M, which will be described later, is written, a printing program for drawing on the printing medium M, and the like.
- the RAM 102 to be temporarily stored, the printing program read from the RAM 102, the operation signal input from the operation panel 108, and the like are subjected to arithmetic processing, and the control unit 103 that controls the operation of each unit according to the control program, the operating state of the inkjet printer P, and the like
- a display panel for displaying, an operation panel 108 provided with various operation switches, and the like are provided.
- the print medium M is a combination of the forward / backward movement of the print medium M by the medium movement mechanism 30 and the left / right movement of the carriage 40 by the carriage movement mechanism 50.
- Pudding The head 60 is relatively moved, by ejecting ink to the print medium M from the nozzles of the printer head 60, renders the information according to the print program.
- the control unit 100 is provided on the upper right side of the body 10, and a liquid crystal display for displaying various types of information, a function key for selecting a function to be set, and an execution on an operation panel 108 that is arranged to be operable from the front of the body.
- Various operation buttons such as a jog key for selecting contents, an enter key for inputting selection contents, and a clear key for deleting settings are provided. For this reason, the operator can set the print heater 70 and print conditions while confirming the display content of the liquid crystal display, and can execute the printing process.
- a heater panel 110 is provided below the control unit 100 (operation panel 108) to display the state of the print heater 70 built in the platen 20.
- the optimum temperature of the print medium M (the optimum surface temperature of the print medium M for attaching ink particles to the print target surface) can be set on the operation panel 108, and this setting set on the operation panel 108 is possible.
- the temperature (optimum temperature) value is stored in the RAM 102 provided in the control unit 100.
- the optimum temperature of the print medium M is set to an appropriate temperature according to the material of the print medium M, the type of ink to be used, the thermal conductivity characteristics of the platen 20, the ambient environmental conditions, and the like.
- the ink jet printer P is provided with a heater control function for adjusting the surface temperature of the print medium M to the set temperature (optimum temperature).
- the control configuration for realizing the heater control function includes a non-contact temperature sensor 80 that detects the surface temperature of the print medium M, a control unit 103 in the control unit 100, and the control unit 100. And an SSR 90 that is electrically connected between the print heater 70 and drives the print heater 70.
- the non-contact type temperature sensor 80 is a radiation thermometer capable of measuring the surface temperature by detecting the intensity of infrared rays (infrared energy) emitted from the surface of the measurement target (print target surface of the print medium M). The detection surface is attached to the side surface portion of the carriage 40 so as to face the print target surface of the print medium M. Since this non-contact type temperature sensor (radiation thermometer) 80 generally has a high response speed, it can reliably and accurately measure the surface temperature of the print medium M as a measurement object even when the carriage 40 moves at high speed. Is possible.
- the non-contact temperature sensor 80 detects infrared rays emitted from the print medium M as the carriage moves by the carriage moving mechanism 50 at a predetermined minute time interval. The analog voltage signal corresponding to the signal is sequentially output to the control unit 100.
- the control unit 103 of the control unit 100 includes an A / D converter (analog) described below in addition to the operation control unit 104 that controls driving of the media moving mechanism 30 and the carriage moving mechanism 50 and the ejection of ink particles by the printer head 60. Digital conversion unit) 105 and temperature control unit 106.
- the A / D converter 105 converts the analog voltage signal input from the non-contact temperature sensor 80 into a digital signal (digital value) and outputs the digital signal to the temperature control unit 106.
- the detected temperature Tm is, for example, in a predetermined printing operation when the non-contact type temperature sensor 80 is integrated with the carriage 40 during the scanning movement of one pass (one way) by the carriage moving mechanism 50. It is an average value (or may be a maximum value or a minimum value) for the surface temperature (detected temperature) value at each position of the print medium M sequentially input from the non-contact type temperature sensor 80 at minute time intervals.
- the SSR (solid state relay) 90 is a contactless heater driving device, and is printed by being opened and closed based on a driving signal (driving amount corresponding to the temperature deviation ⁇ T) from the temperature control unit 106.
- the drive of the print heater 70 is controlled so that the surface temperature of the print medium M is adjusted to the set temperature Ts by switching the energization to the heater 70 on / off (power supply / cutoff).
- the temperature control unit 106 compares the set temperature Ts of the print medium M set in the RAM 102 with the detected temperature Tm of the non-contact type temperature sensor 80, and the surface temperature of the print medium M is the optimum temperature (set temperature). Ts), feedback control is performed by switching on / off the energization of the print heater 70 via the SSR 90.
- the print medium M which is a printing object, is attached to the ink jet printer P so as to be conveyed from the rear to the front on the platen 20, and is fed between the upper and lower rollers 36 and 31 on the platen 20. It is conveyed forward by rotating 31.
- the carriage 40 is reciprocated left and right along the guide rail 45 by the carriage moving mechanism 50 with respect to the printing medium M placed on the platen 20, ink particles are ejected from the nozzles on the lower surface of each printer head 60. Is adhered to the print medium M in a desired pattern. Then, after the print medium M is conveyed forward by a predetermined pitch, ink particles are repeatedly ejected from the nozzles of the printer head 60 while the carriage 40 is reciprocated left and right again.
- the non-contact temperature sensor 80 is integrated with the carriage 40 to scan and move above the print medium M, and infrared rays emitted from the print medium M are emitted at minute time intervals. Detection is performed and detection signals corresponding to the detected infrared intensity are sequentially output to the control unit 100. An analog signal input from the non-contact temperature sensor 80 is converted into a digital signal by the A / D converter 105 in the control unit 100, and then converted into a detected temperature Tm by the temperature control unit 106.
- the temperature control unit 106 calculates and compares the measured detected temperature (average value of the surface temperature of the print medium M) Tm and the set temperature Ts (the optimum temperature of the print medium M) stored in the RAM 102 in advance.
- the temperature deviation ⁇ T is calculated.
- the temperature control unit 106 outputs a drive signal corresponding to the magnitude of the temperature deviation ⁇ T to the SSR 90, and controls energization to the print heater 70 on / off.
- the print medium M is heated via the platen 20 during that time, and the surface temperature of the print medium M gradually increases.
- the energization of the print heater 70 is turned on according to the magnitude of the temperature deviation ⁇ T.
- the surface temperature of the print medium M in the drawing area is adjusted to the set temperature Ts.
- the surface of the print medium M including the part of the print medium M newly fed forward by a predetermined pitch is also included.
- the temperature is measured, and the energization to the print heater 70 is turned on / off so that the surface temperature of the print medium M becomes the set temperature Ts based on the temperature deviation ⁇ T, thereby corresponding to the scanning movement of the carriage 40.
- the surface temperature of the printing medium M that is sequentially fed out can always be maintained near the optimum temperature.
- the ink jet printer P has a detected temperature measured (measured) by the non-contact temperature sensor 80 simultaneously with the printing operation of the printer head 60.
- a temperature deviation ⁇ T with respect to the set temperature Ts is obtained based on Tm, and feedback control is performed by switching on / off the energization of the print heater 70 so that the surface temperature of the print medium M becomes the optimum temperature.
- the printer head 60 is maintained by always maintaining the surface temperature of the printing medium M at a desired optimum temperature. Therefore, it is possible to satisfactorily stabilize the fixability of the ink ejected from the ink and improve the printing quality of the ink jet printer P.
- FIGS. 1 and 2 show an ink jet printer P ′ according to a second embodiment.
- the ink jet printer P ′ has substantially the same configuration as the ink jet printer P according to the first embodiment, and the following description will focus on differences from the ink jet printer P.
- subjected has the structure demonstrated in the above-mentioned 1st Example.
- FIG. 7 which is a schematic front sectional view of the platen 20
- the scanning direction (left-right direction) of the carriage 40 is provided on the back side of the main platen 22 that supports the print medium M that is a printing object.
- a plurality of print heaters 71, 72, 73, 74, 75 are provided. These print heaters 71 to 75 are driven by energization being independently controlled via the corresponding SSRs 91 to 95 according to commands from the temperature control unit 106 ′ of the control unit 100 ′. Although the print heaters 71 to 75 divided into five are illustrated here, the number of divisions may be four or less or six or more.
- a carriage position detector 81 for detecting the scanning direction position (left-right direction position) of the carriage 40 is provided on the rear side of the carriage 40, and the detection signal is sequentially sent to the control unit 100 ′. Is output.
- Examples of the carriage position detector 81 include a linear encoder and a rotary encoder.
- control unit 103 ′ of the control unit 100 ′ includes, in addition to the operation control unit 104, the A / D converter 105, and the temperature control unit 106 ′ described above.
- the position detecting unit 107 is configured to detect the position of the non-contact temperature sensor 80.
- the position detection unit 107 detects the position of the carriage 40 in the scanning direction based on the detection signal input from the carriage position detector 81, and moves in unison with the carriage 40 based on this detection position. The position in the scanning direction is calculated.
- the RAM 102 stores the positions (coordinates) of the respective print heaters 71 to 75, whereby the non-contact type temperature sensor 80 that is displaced along with the scanning movement of the carriage 40 and the respective print heaters 71 to 75 are stored. The relative position is obtained.
- the temperature control unit 106 ′ is based on the surface temperature information of the printing medium M input from the non-contact type temperature sensor 80 at a minute time interval and the position information of the non-contact type temperature sensor 80 obtained from the position detection unit 107. Then, the surface temperature distribution in the drawing area of the print medium M is obtained. Further, the temperature control unit 106 ′ performs printing corresponding to the arrangement of the print heaters 71 to 75 from the surface temperature distribution of the print medium M based on the positions (coordinates) of the print heaters 71 to 75 stored in the RAM 102.
- An average value (or a maximum value or a minimum value) of the surface temperature is calculated for each region of the medium M as detected temperatures Tm 1 to Tm 5 , and a temperature deviation ⁇ T 1 from a preset temperature Ts preset in the RAM 102.
- the SSRs 91 to 95 are opened / closed based on drive signals from the temperature control unit 106 '(drive amounts corresponding to the temperature deviations ⁇ T 1 to ⁇ T 5 ) to turn on the energization to the print heaters 71 to 75, respectively.
- the drive of each of the print heaters 71 to 75 is controlled so that the surface temperature of each region in the print medium M becomes the optimum temperature (set temperature Ts).
- the temperature control unit 106 ′ allows the surface temperature of each region corresponding to the heater arrangement in the print medium M to be the optimum temperature (set temperature Ts) (that is, the surface temperature distribution of the print medium M is the set temperature).
- set temperature Ts the optimum temperature
- the energization of the print heaters 71 to 75 is switched on / off via the SSRs 91 to 95 to perform feedback control.
- the non-contact temperature sensor 80 detects the infrared rays emitted from the print medium M at a minute time interval while scanning and moving above the print medium M together with the carriage 40.
- the detection signal corresponding to the detected infrared intensity is sequentially output to the control unit 100 '.
- the analog signal input from the non-contact type temperature sensor 80 is converted into a digital signal by the A / D converter 105 in the control unit 100 ′, and the temperature control unit 106 ′ detects the detected temperature Tm 1 for each region according to the heater arrangement. each of which is a function equivalent to ⁇ Tm 5.
- the temperature control unit 106 ′ calculates the temperature deviations ⁇ T 1 to ⁇ T 5 by comparing the measured detected temperatures Tm 1 to Tm 5 of each region with the set temperature Ts stored in the RAM 102 in advance.
- the temperature control unit 106 ′ outputs drive signals corresponding to the magnitudes of the temperature deviations ⁇ T 1 to ⁇ T 5 to the corresponding SSRs 91 to 95, and performs on / off control of energization to the print heaters 71 to 75.
- the corresponding area of the heater in the print medium M is heated via the platen 20 and the surface temperature of the corresponding area is gradually increased.
- the print heaters 71 to 75 whose power supply is cut off, heating of the corresponding area of the print medium M to the corresponding heater is interrupted, and the surface temperature of the corresponding area is gradually lowered.
- the surface temperature in the drawing region of the print medium M reaches the set temperature Ts by controlling the energization of the print heaters 71 to 75 in accordance with the magnitudes of the temperature deviations ⁇ T 1 to ⁇ T 5.
- the surface temperature (surface temperature distribution) of the print medium M is made uniform over the entire drawing area to the optimum temperature.
- the surface temperature of the print medium M including the part of the print medium M newly fed forward by a predetermined pitch is also included. Is measured, and the energization of the print heaters 71 to 75 is controlled on / off so that the surface temperature of the print medium M becomes the set temperature Ts based on these temperature deviations ⁇ T 1 to ⁇ T 5. It becomes possible to always make the surface temperature of the print medium M sequentially sent out corresponding to 40 scanning movements equal to the optimum temperature.
- the ink jet printer P ′ has an optimum temperature (setting) for each area of the print medium M according to the arrangement of the print heaters 71 to 75.
- the temperature deviations ⁇ T 1 to ⁇ T 5 with respect to the temperature Ts) are respectively obtained, and the energization of the print heaters 71 to 75 is turned on /
- the feedback control is performed by switching off. For this reason, the surface temperature can be made uniform over the entire drawing region of the print medium M, and the ink fixing property can be stabilized uniformly over the entire print target surface, thereby further improving the print quality of the inkjet printer P ′. be able to.
- the electric heaters are provided only on the portion of the platen 20 corresponding to the media support portion 21 (main platen 22).
- an electric heater may be provided on the back side of the rear platen 23 extending rearward from the main platen 22.
- an electric heater (after heater) may be provided on the back side of the front platen 24 extending forward from the main platen 22. According to this configuration, the drying of the ink attached to the print medium M can be further promoted, so that the effect of improving the print quality can be further ensured.
- FIG. 1 and 2 show an ink jet printer P ′′ according to a third embodiment.
- the ink jet printer P ′′ is substantially the same as the ink jet printers P and P ′ according to the first and second embodiments.
- the following description will focus on differences from the inkjet printers P and P ′. Note that the constituent elements having the same numbers as those of the ink jet printers P and P ′ have the configurations described in the first and second embodiments.
- print heaters 71 to 75 and pre-heaters 171 to 175 are turned on / off independently through the corresponding SSRs 91 to 95 and 191 to 195 in response to a command from the temperature control unit 106 ′′ of the control unit 100 ′′.
- an area heated by the preheaters 171 to 175 in the print medium M is referred to as an upstream area, and is distinguished from a drawing area heated by the print heaters 71 to 75.
- the non-contact type temperature sensor 80 ′′ is attached to an arm portion 81 extending rearward from the carriage 40 and disposed above the rear platen 23, and preheaters 171 to 175 of the print medium M.
- the surface temperature of the upper portion (that is, the upstream region of the print medium M) can be measured.
- This non-contact type temperature sensor 80 ′′ is moved along the scanning movement by the carriage moving mechanism 50. Infrared radiation radiated from the upstream region is detected at a constant minute time interval, and an analog voltage signal corresponding to the detected infrared intensity is sequentially output to the control unit 100 ′′.
- the control unit 103 ′′ of the control unit 100 ′′ includes an operation control unit 104, an A / D converter 105, a temperature control unit 106 ′′, and a position detection unit 107 ′′. It is comprised.
- the position detection unit 107 ′′ detects the position of the carriage 40 in the scanning direction based on the detection signal input from the carriage position detector 81, and performs non-contact temperature scanning and movement integrally with the carriage 40 based on this detection position.
- the scanning direction position of the sensor 80 ′′ is calculated.
- the RAM 102 stores the positions (coordinates) of the pre-heaters 171 to 175, so that the relative contact between the non-contact type temperature sensor 80 ′′ and the pre-heaters 171 to 175, which are displaced with the scanning movement of the carriage 40. Each position is determined.
- the temperature control unit 106 ′′ receives the surface temperature information of the upstream region of the print medium M input from the non-contact type temperature sensor 80 ′′ and the position information of the non-contact type sensor 80 ′′ obtained from the position detection unit 107 ′′. Based on this, the surface temperature distribution in the upstream region of the print medium M is obtained, and drive signals corresponding to the surface temperature distribution are output to the SSRs 191 to 195 so that the surface temperature distribution is equalized to the set temperature stored in the RAM 102.
- the temperature control unit 106 reads the printing program stored in the RAM 102 and refers to the image data corresponding to the upstream area, and this upstream area is drawn by the medium moving mechanism 30 on the main platen 22. For a portion of the upstream region where ink of a discharge amount exceeding a predetermined threshold value is attached by the printer head 60 when the ink is conveyed to the set temperature Ts, a predetermined temperature increase ⁇ Tu is set to the set temperature Ts.
- the added drive signal is output to the SSRs 191 to 195 corresponding to the preheaters 171 to 175 for heating the upstream area portion, where the preheater 171 to 175 set temperature of the preheater 171 to 175 is the upstream of the print medium M.
- the temperature control unit 106 is adapted to read the temperature temperature ⁇ Tu appropriately from this table.
- the SSRs 191 to 195 are controlled to open and close based on the drive signal from the temperature control unit 106 ′′, thereby switching on / off the energization to the preheaters 171 to 175, so that the surface temperature of the upstream region in the print medium M can be changed.
- the upstream area where the ink with the ejection amount less than the predetermined threshold is attached has the set temperature Ts stored in the RAM 102, while the ink with the ejection amount exceeding the predetermined threshold is present.
- the preheaters 171 to 175 are driven by switching on / off the energization of the preheaters 171 to 175 so that the upstream region to be attached has a temperature obtained by adding the temperature increase ⁇ Tu to the set temperature Ts.
- the ink jet printer P ′′ has a predetermined threshold value by the printer head 60 when the print medium M is conveyed to the drawing area.
- the surface temperature of the upstream region where ink with a discharge amount less than that is attached is adjusted to a set temperature Ts (for example, a relatively low temperature) by a pre-heater, and ink with a discharge amount exceeding a predetermined threshold is attached.
- the upstream area portion is adjusted to a temperature obtained by adding the temperature increase ⁇ Tu to the set temperature Ts by a preheater.
- the print medium M is preheated in advance with a heating amount corresponding to the ink discharge amount (ink adhesion amount), and the set temperature Ts is relatively set for a portion of the print medium M where the ink discharge amount (ink adhesion amount) is small. Since the power consumption can be reduced while keeping it low, it is also possible to exert an energy saving effect.
- the temperature increase ⁇ Tu depends on the outside air temperature or the like, for example, an outside air temperature detector (temperature sensor) is separately provided, and the temperature increase ⁇ Tu that is appropriate for the detected outside air temperature can be read from the table. ing.
- the time t required for Atsushi Nobori, one line of print time (carriage moving time) t c, (the width of the drawing area) print band width W, is controlled depends on the transport time t h of the print medium M that (with these t c, W, t h and a constant for Atsushi Nobori time t derivation).
- a non-contact type temperature sensor (temperature sensor 80 illustrated in the second embodiment) that measures the surface temperature of the drawing region on the print medium M is also provided in the carriage 40, and the threshold is set based on the image data. Even if the driving of the print heaters 71 to 75 is controlled through the SSRs 91 to 95 so that the heating amount of the print heaters 71 to 75 is increased with respect to the drawing region to which the discharge amount of ink exceeding the value is attached. Good.
- the surface temperature of the downstream region of the print medium M located on the front platen 24 may be detected by a non-contact type temperature sensor.
- the surface temperature of the portion of the downstream region where the temperature detected by the non-contact temperature sensor is low is large due to heat dissipation due to vaporization or the like because the ink discharge amount is large (that is, the ink adhesion amount is large).
- it is possible to preheater 171 to the upstream area and the drawing area corresponding to the low detection temperature portion in the downstream area. 175 and the heating amounts of the print heaters 71 to 75 may be controlled to be large.
- the so-called platen heater built in the platen 20 is described as an example of the heater means for raising the temperature of the print medium M.
- the heater unit may be provided above the platen 20 to directly heat the surface of the print medium M.
- a heater unit 270 may be mounted on the carriage 40 so that the print medium M is integrally scanned and moved together with the carriage 40, according to such a configuration.
- a rail member extending in parallel with the guide rail 45 (extending in the left-right direction) above the print medium M is separately provided, and heater means is provided on a slide member that can reciprocate along the rail member. Even with such a configuration, it is possible to raise the temperature of only the necessary area of the print medium M (area where the ink is attached), and the power consumption of the entire inkjet printer is suppressed, thereby saving energy. It is possible to obtain Furthermore, the rail member extending in parallel with the guide rail 45 may be provided with heater means over almost the entire drawing area of the print medium M. According to such a configuration, the heater means is non-movable. By doing so, it is possible to simplify the mechanism configuration.
- the electric heater is exemplified as the heater means for raising the temperature of the print medium M.
- the heater means is a waveguide.
- a high frequency generator electromagnetic that supplies a high frequency via a tube, a far infrared heater, or the like may be employed.
- a plurality of print heaters 71 to 75 are arranged along the scanning direction of the carriage 40.
- the present invention is not limited to such a configuration.
- a single print heater that can adjust the drive amount (output) for each of the divided areas in the scanning direction of the carriage 40 may be provided.
- an ink jet printer As an example of an ink jet printer, a uniaxial printing medium movement type and a uniaxial printer head movement type ink jet printer have been described.
- the present invention is an ink jet printer of another form, for example, a biaxial printer head movement type. It is also possible to apply to an inkjet printer or the like.
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- Engineering & Computer Science (AREA)
- Quality & Reliability (AREA)
- Ink Jet (AREA)
Abstract
Description
P,P′,P″ インクジェットプリンタ
20 プラテン(媒体支持部)
40 キャリッジ
50 キャリッジ移動機構
60 プリンタヘッド
70 プリントヒータ(ヒータ手段)
71~75 プリントヒータ(ヒータ手段、分割ヒータ手段)
171~175 プレヒータ(ヒータ手段、分割ヒータ手段)
80,80″ 非接触型温度センサ(温度検出手段)
90 SSR(温度制御手段)
91~95 SSR(温度制御手段)
100,100′,100″ コントロールユニット
106,106′,106″ 温度制御部(温度制御手段)
191~195 SSR(温度制御手段)
270 ヒータ手段
Claims (3)
- 印刷媒体を支持する媒体支持部と、
インクを吐出するプリンタヘッドを有したキャリッジと、
前記媒体支持部に支持された前記印刷媒体の印刷対象面に沿って前記キャリッジを相対移動させるキャリッジ移動機構と、
前記印刷媒体を加熱調温するヒータ手段と、
前記印刷対象面に対向して前記キャリッジに取り付けられ前記キャリッジによる相対移動に伴って前記印刷媒体の表面温度を前記相対移動方向に沿って検出する温度検出手段と、
前記温度検出手段による検出温度に基づいて前記ヒータ手段を駆動させることにより、前記印刷媒体の表面温度を所定の設定温度に調節する制御を行う温度制御手段とを備えて構成したことを特徴とするインクジェットプリンタ。 - 前記ヒータ手段が、前記印刷媒体を前記相対移動方向に沿って複数に分割した領域ごとにそれぞれ加熱調温する分割ヒータ手段からなり、
前記温度制御手段は、前記温度検出手段により前記相対移動方向に沿って前記領域ごとに検出された検出温度に基づいてそれぞれ対応する前記分割ヒータ手段を駆動させて、前記印刷媒体の表面温度を前記所定の設定温度に均一化する制御を行うように構成したことを特徴とする請求項1に記載のインクジェットプリンタ。 - 前記温度制御手段が、前記プリンタヘッドにより所定のしきい値を超える吐出量のインクが付着される前記分割領域の表面温度に対しては、前記吐出量に応じた昇温度を前記所定の設定温度に加算した温度に調節する制御を行うことを特徴とする請求項2に記載のインクジェットプリンタ。
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US13/391,820 US20120147080A1 (en) | 2009-08-26 | 2010-08-26 | Inkjet printer |
EP10811520A EP2471656A4 (en) | 2009-08-26 | 2010-08-26 | INKJET |
JP2011528650A JPWO2011024464A1 (ja) | 2009-08-26 | 2010-08-26 | インクジェットプリンタ |
CN2010800377578A CN102481783A (zh) | 2009-08-26 | 2010-08-26 | 喷墨打印机 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2009195808 | 2009-08-26 | ||
JP2009-195808 | 2009-08-26 |
Publications (1)
Publication Number | Publication Date |
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WO2011024464A1 true WO2011024464A1 (ja) | 2011-03-03 |
Family
ID=43627582
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2010/005280 WO2011024464A1 (ja) | 2009-08-26 | 2010-08-26 | インクジェットプリンタ |
Country Status (6)
Country | Link |
---|---|
US (1) | US20120147080A1 (ja) |
EP (1) | EP2471656A4 (ja) |
JP (1) | JPWO2011024464A1 (ja) |
KR (1) | KR20120048641A (ja) |
CN (1) | CN102481783A (ja) |
WO (1) | WO2011024464A1 (ja) |
Cited By (6)
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JP2013028119A (ja) * | 2011-07-29 | 2013-02-07 | Canon Inc | プリント装置および方法 |
JP2013107237A (ja) * | 2011-11-18 | 2013-06-06 | Mimaki Engineering Co Ltd | 液体吐出装置 |
US20150022603A1 (en) * | 2011-08-22 | 2015-01-22 | Seiko Epson Corporation | Recording apparatus |
JP2019064135A (ja) * | 2017-09-29 | 2019-04-25 | 株式会社リコー | 液体吐出装置、画像形成方法 |
JP2019155800A (ja) * | 2018-03-15 | 2019-09-19 | 株式会社リコー | 乾燥装置及び乾燥方法、並びに画像形成方法及び画像形成装置 |
JP7358920B2 (ja) | 2019-11-07 | 2023-10-11 | 株式会社リコー | 液体吐出装置 |
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ITMI20102478A1 (it) * | 2010-12-30 | 2012-07-01 | Telecom Italia Spa | Ink-jet printer for printing on cards |
JP5599421B2 (ja) * | 2012-03-27 | 2014-10-01 | 富士フイルム株式会社 | インクジェット記録装置 |
CN104487259B (zh) * | 2012-09-28 | 2016-12-07 | 惠普发展公司,有限责任合伙企业 | 响应于确定所检测温度在目标温度范围之外而确定延迟值 |
JP2015051508A (ja) * | 2013-09-05 | 2015-03-19 | セイコーエプソン株式会社 | プリンター、プリンターの制御方法および光照射装置 |
EP3046765B1 (en) | 2013-09-19 | 2018-02-21 | Hewlett-Packard Development Company, L.P. | Selectively heating a heating zone of a printing system |
DE102013016755A1 (de) * | 2013-10-10 | 2015-04-16 | Heidelberger Druckmaschinen Ag | Stanzmaschine mit Einrichtung zum Zurichten |
JP6319556B2 (ja) * | 2014-01-17 | 2018-05-09 | セイコーエプソン株式会社 | 液体吐出装置 |
JP6295772B2 (ja) * | 2014-03-27 | 2018-03-20 | セイコーエプソン株式会社 | 液体吐出装置及び加熱部制御方法 |
CN103956407B (zh) * | 2014-04-23 | 2017-06-06 | 中国科学院物理研究所 | 制备钙钛矿基薄膜太阳电池的方法及喷墨打印机 |
DE102014106016B4 (de) * | 2014-04-29 | 2021-03-11 | Wemhöner Surface Technologies GmbH & Co. KG | Multipass-Digitaldruckvorrichtung |
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US10933483B2 (en) | 2017-12-05 | 2021-03-02 | Illinois Tool Works Inc. | IR non-contact temperature sensing in a dispenser |
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KR20120048641A (ko) | 2012-05-15 |
JPWO2011024464A1 (ja) | 2013-01-24 |
EP2471656A1 (en) | 2012-07-04 |
EP2471656A4 (en) | 2013-01-09 |
CN102481783A (zh) | 2012-05-30 |
US20120147080A1 (en) | 2012-06-14 |
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