WO2019017514A1 - Dispositif d'impression et procédé comportant une fonction de calcul d'épaisseur de support - Google Patents

Dispositif d'impression et procédé comportant une fonction de calcul d'épaisseur de support Download PDF

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Publication number
WO2019017514A1
WO2019017514A1 PCT/KR2017/007880 KR2017007880W WO2019017514A1 WO 2019017514 A1 WO2019017514 A1 WO 2019017514A1 KR 2017007880 W KR2017007880 W KR 2017007880W WO 2019017514 A1 WO2019017514 A1 WO 2019017514A1
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WO
WIPO (PCT)
Prior art keywords
medium
thickness
printing
unit
calculating function
Prior art date
Application number
PCT/KR2017/007880
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English (en)
Korean (ko)
Inventor
최근수
Original Assignee
주식회사 딜리
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Filing date
Publication date
Application filed by 주식회사 딜리 filed Critical 주식회사 딜리
Publication of WO2019017514A1 publication Critical patent/WO2019017514A1/fr

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Classifications

    • 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
    • B41J11/0035—Handling copy materials differing in thickness
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
    • G01B11/00—Measuring arrangements characterised by the use of optical techniques
    • G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
    • G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T1/00—General purpose image data processing
    • G06T1/0007—Image acquisition
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
    • G06T7/00—Image analysis
    • G06T7/60—Analysis of geometric attributes
    • 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
    • B41J2203/00—Embodiments of or processes related to the control of the printing process
    • B41J2203/01—Inspecting a printed medium or a medium to be printed using a sensing device

Definitions

  • the present invention relates to a printing apparatus and a printing method having a medium thickness calculating function, and more particularly to a printing apparatus having a medium thickness calculating function for real- A printing apparatus, and a printing method.
  • Digital printing refers to a technique of directly processing data to be output without directly intervening processes such as film processing in a conventional off-set printing method, and directly outputting the data to a printing machine.
  • a print head alignment technique for precisely positioning and fixing the print head for high-quality printing
  • a print medium supply and recovery control technique for keeping the tension applied to the print medium placed on the supply side and the recovery side constant
  • a print medium position correcting technique for detecting and correcting the width direction displacement of the ink droplet, and ink jetting control and hardening related technologies.
  • An object of the present invention is to provide a printing apparatus and a method provided with a medium thickness calculating function capable of producing a high quality printing result of a predetermined quality or higher even when the thickness of a fine printing medium is changed by real- I have to.
  • the operator had to check the thickness of the printing medium and adjust the printing parameters according to the thickness. Therefore, it was difficult to accurately measure the thickness and the printing parameters could not be finely adjusted. In the present invention, And automatically optimizes the printing parameters and reflects them in the printing process.
  • the automatic process improves the inefficiency in the conventional manual work, thereby shortening the work time and improving the work efficiency.
  • a printing apparatus comprising: A recovery unit for recovering the print medium; A head unit installed between the supply unit and the recovery unit and recording an image on a print medium; And a control unit for controlling driving of the supply unit, the recovery unit, and the head unit. And a thickness detecting function for detecting a thickness of the printing medium, the printing apparatus being provided adjacent to the supplying section, and having a medium thickness calculating function.
  • the thickness detector may be provided by a camera, and the controller may analyze the image information transmitted from the camera through image processing to detect the thickness of the print medium.
  • the thickness detecting unit may be provided on one of a plurality of media transport rollers provided between the supply unit and the head unit.
  • the thickness detecting unit may include a first encoder which is installed to rotate in conjunction with the medium feeding roller in contact with one side of the medium feeding roller, and a second encoder which is installed to rotate in conjunction with the medium feeding roller via the printing medium, Encoder.
  • control unit is configured to detect the thickness of the printing medium by comparing the pulse value of the first encoder generated by the rotation of the medium feeding roller with the pulse value of the second encoder.
  • control unit may generate a corresponding printing parameter according to a change in thickness of the printing medium detected based on the real-time sensing information transmitted from the thickness detecting unit, and apply the printing parameter to the printing process.
  • the controller may be configured to vary the operation of the head unit according to the thickness of the print medium detected based on the real-time sensing information transmitted from the thickness detector.
  • the controller may be configured to vary the position of the head unit according to the thickness of the print medium detected based on the real-time sensing information transmitted from the thickness detector.
  • the controller may be configured to vary the supply amount of ink supplied to the head unit according to the thickness of the print medium detected based on the real-time sensing information transmitted from the thickness detecting unit.
  • the controller may be configured to vary the amount of ink ejected from the head according to the thickness of the print medium detected based on the real-time sensing information transmitted from the thickness detector.
  • the controller may be configured to vary an ejection speed of the ink ejected from the head according to the thickness of the print medium detected based on the real-time sensing information transmitted from the thickness detector.
  • a printing apparatus comprising: a print medium supply step of supplying a print medium from a supply unit; An image recording step of recording an image on a print medium supplied from the supply unit in the head unit; And a print medium recovery step of recovering a print medium on which an image is recorded from the head unit through a recovery unit; Detecting a printing medium thickness between the printing medium supplying step and the image printing step for detecting a thickness of the supplied printing medium in a thickness detecting unit; Can be accomplished by a printing method having a medium thickness calculating function to be performed.
  • the control unit analyzes the image information transmitted from the camera through image processing to detect the thickness of the print medium Lt; / RTI >
  • the step of detecting the thickness of the print medium may be a step of detecting the thickness of the print medium by comparing the pulse values detected by the first and second encoders provided adjacent to the medium transport roller provided between the supply unit and the head unit, have.
  • the first encoder is installed to rotate in conjunction with the medium feed roller in contact with one side of the medium feed roller
  • the second encoder is installed to rotate in conjunction with the medium feed roller through the print medium at the other side of the medium feed roller do.
  • the real-time thickness information of the print medium detected through the print medium thickness detection step is transmitted to the control unit, and the control unit is adapted to generate the corresponding print parameters according to the real-time thickness change of the print medium and apply the generated print parameters to the printing process .
  • the real-time thickness information of the printing medium detected through the printing medium thickness detecting step is transmitted to the control unit, and the control unit may vary the operation of the head unit in the image recording step according to the real- do.
  • the image recording step may include: a position changing step of changing a position of the head part; A supply amount varying step of varying a supply amount of ink supplied to the head part; A variable injection amount step of varying an injection amount of ink injected from the head part; And a jetting speed varying step of varying jetting speed of the ink jetted from the head portion.
  • the present invention may also be embodied by a computer-readable recording medium having stored thereon a program for performing the printing method.
  • the thickness of the print medium on the supply side can be detected in real time and reflected in the printing process, so that a high-quality printed product with a predetermined or higher thickness can be produced even when the thickness of the fine print medium is changed.
  • the automatic process improves the inefficiency in the conventional manual work, thereby shortening the working time and improving the work efficiency.
  • FIG. 1 is a schematic view showing an embodiment of a printing apparatus having a medium thickness calculating function according to the present invention
  • FIG. 2 is a schematic view showing another embodiment of a printing apparatus having a medium thickness calculating function according to the present invention
  • FIG. 3 is a flowchart of a printing method having a medium thickness calculating function according to the present invention
  • FIG. 4 is a block diagram showing steps included in an image recording step in a printing method having a medium thickness calculating function according to the present invention.
  • Fig. 1 is a schematic view showing an embodiment of a printing apparatus having a medium thickness calculating function according to the present invention.
  • Fig. 2 is a schematic view showing another embodiment of a printing apparatus having a medium thickness calculating function according to the present invention.
  • a printing apparatus having a medium thickness calculating function includes a supplying unit 10, a collecting unit 20, a head unit 30, a control unit 40, and a thickness detecting unit 50 ).
  • the printing apparatus is a single-pass type printing apparatus in which the printing medium is moved while the head unit is fixed and the printing medium is moved to the lower side of the head unit.
  • the present invention is not limited thereto, It is needless to say that the technical idea of the present invention can be applied to various printing apparatuses such as a multi-pass type printing apparatus in which printing is performed while the head unit is repeatedly moved left and right or an ink jet printer or a digital printing press to be.
  • the entire printing process of the printing apparatus is supplied with the printing medium m from the supply unit 10 and the image is printed on the printing medium m by jetting the ink onto the printing medium m supplied from the head unit 30 And a print medium m on which an image is recorded is retrieved through the recovery unit 20.
  • the control unit 40 may be provided to control the operation and the driving of each of the above structures.
  • the feeding section 10 is configured to feed the printing medium m to the head section 30 and includes a feeding roller wound with the printing medium m and a plurality of A medium conveying roller 52 and a motor and a drive control unit for providing a driving force to the feeding roller.
  • the recovery unit 20 is configured to recover the print medium m from the head unit 30.
  • the recovery unit 20 removes the print medium m from the head unit 30, a plurality of medium conveying rollers 52 for conveying the recording medium m, and a motor and a drive control unit for providing a driving force to the collection roller.
  • the supply and collection rollers constituting the supply unit 10 and the recovery unit 20 and the plurality of medium conveyance rollers 52 are shown to be provided symmetrically in correspondence with each other, but the present invention is not limited thereto , And the positions and the number of the rollers may be provided in various forms according to the quality of the printing result and the setting items in the printing process.
  • the feeding unit 10 and the collecting unit 20 are also provided with parts and units such as various position correcting mechanisms for controlling the position, feeding speed and tension of the printing medium m supplied and collected, a feeding speed controlling mechanism, But the other parts of the printing apparatus are the same as those in the known art, and a detailed description thereof will be omitted.
  • the head unit 30 is a component that performs a role of recording an image on the supplied print medium m and is provided between the supply unit 10 and the recovery unit 20 and includes a print unit A sensor for detecting the position of the medium m, and a plurality of conveying rollers for conveying the print medium m from below the head portion 30.
  • the control unit 40 controls the overall operation of the supplying unit 10, the collecting unit 20 and the head unit 30.
  • the control unit 40 receives the sensing values from the thickness detecting unit 50 to be described later, An information processing unit, an MCU, an arithmetic unit, and the like in a structure that is analyzed and processed and reflected in the drive control of the supply unit 10, the collection unit 20, and the head unit 30.
  • the thickness detecting unit 50 is a characteristic component of the present invention and serves to detect thickness information of the print medium m at a specific point in time. As shown in Figs. 1 and 2, Respectively.
  • the reason why the thickness detecting portion 50 is provided adjacent to the supplying portion 10 is that the thickness information of the printing medium m before printing is determined and the control portion 40 controls the operation of the printing medium m
  • the printing medium m is curved with respect to the longitudinal direction by adjusting the control of the printing mediums (or the like) or the printing medium m having a different thickness depending on the medium characteristics.
  • the configuration of the thickness detector 50 of the present invention is not limited to the method described below, and it is needless to say that the thickness detector 50 may be configured in various forms to detect the real time thickness of the print medium m.
  • Fig. 1 shows an embodiment in which the thickness detecting section 50 according to the present invention is adopted as a camera 51.
  • the thickness detector 50 is provided in the camera 51 and acquires the side image information of the supplied print medium m.
  • the photographed image information is input to the controller 40,
  • the thickness of the printing medium m is detected by analyzing the input image information through image processing. That is, the control unit 40 analyzes and processes the side image information of the transferred print medium m through image processing, separates and discriminates the print medium m and the background in the image information, and compares the print medium m with the reference value The thickness formed by the discriminated print medium m can be discriminated.
  • control unit 40 may analyze the side image information of the transferred print medium m in real time, measure the thickness information for all sections of the print medium m, and reflect the thickness information on the printing process value , The thickness measurement may be performed only when the thickness of the sheet exceeds a predetermined thickness range in order to prevent an overload on the analysis and calculation of the control unit 40 so as to be reflected in the printing process value.
  • Fig. 2 shows an embodiment in which the thickness detector 50 according to the present invention is adopted as a plurality of encoders 53 and 54.
  • the thickness detecting section 50 is provided with two first and second encoders 53 and 54 provided adjacent to one of the plurality of medium conveying rollers 52 provided between the feeding section 10 and the head section 30 And the first and second encoders 53 and 54 are preferably provided as rotary encoders.
  • the rotary encoder outputs the amount of mechanical displacement in the rotation direction as a digital value in the form of a pulse value, and outputs a pulse value proportional to the rotation angle of the encoder.
  • the first encoder 53 is disposed to directly contact one side of the medium conveying roller 52 to rotate in conjunction with the rotation of the medium conveying roller 52, and the second encoder 54 is provided to rotate the medium conveying roller 52, And is interlocked with the medium feeding roller 52 via the print medium m.
  • the second encoder 54 rotates in conjunction with the medium conveying roller 52 via the print medium m,
  • the amount of rotation (output pulse value) of the first encoder 53 and the second encoder 54 is different by the thickness of the printing medium m with respect to the rotation of the conveying roller 52, The thickness of the printing medium m is finally detected.
  • control unit 40 compares the pulse value of the first encoder 53 generated by the rotation of the medium feeding roller 52 with the pulse value of the second encoder 54 to detect the thickness of the print medium m .
  • the first and second encoders 53 and 54 are an incremental system for integrating pulses generated in response to the rotation angle from the measurement start point according to the measurement and the operation method, an absolute angle of one rotation or multiple rotation Absolute method to measure the position, photoelectric system that outputs light pulse information through the slit by irradiating light to a slit plate having a scale, and detecting the change of periodic magnetic field
  • the first and second encoders 53 and 54 of the same type can not be selected as a combination of the magnetic system of the first type and the electrostatic capacity, or the other system of outputting the pulse value through electrical induction, Should be selected.
  • control unit 40 generates a corresponding printing parameter according to the thickness variation of the printing medium m measured based on the real-time sensing information transmitted from the thickness detecting unit 50, and applies the printing parameter to the printing process.
  • control unit 40 may be configured to vary the operation of the head unit 30 according to the thickness of the print medium m detected based on the real-time sensing information transmitted from the thickness detector 50.
  • the method of varying the operation of the head unit 30 can be implemented in various forms. The method of varying the position of the head unit 30 through a structure such as a cylinder for displacing the height of the head unit 30, A configuration in which the supply amount of ink supplied to the head part 30 is varied by adjusting the pressure of the ink supply tank and the supply line implemented in the head part 30, And the ink amount of the ink jetted onto the print medium m from the head unit 30 and the shape of varying the jetting speed.
  • the control unit 40 acquires the thickness sensing information of the print medium m supplied from the thickness detecting unit 50 (image information through a camera or pulse value information through two encoders) to the control unit 40, (M) having different thicknesses by calculating the thickness information of the print medium (m) at a specific point in time or the entire section and by reflecting the change in the printing process value or the operation of the head unit (30) It is possible to secure a constant printing quality on the printing medium.
  • control unit 40 controls the configuration through the control unit 40 such as the synchronization of the printing timing of the head unit 30 which is varied and adjusted based on the measured thickness information of the print medium m and the conveying speed adjustment of the medium.
  • FIG. 3 is a flow chart of a printing method having a medium thickness calculating function according to the present invention
  • FIG. 4 is a block diagram showing steps included in an image recording step in a printing method having a medium thickness calculating function according to the present invention .
  • a printing method having a medium thickness calculating function includes a printing medium supplying step (S10) in which a printing medium is supplied from a supplying unit; An image recording step (S20) of recording an image on the print medium supplied from the supply unit in the head unit; And a print medium recovery step (S30) in which a print medium on which an image is recorded from the head unit is collected through a recovery unit; A printing medium thickness detecting step (S15) for detecting the thickness of the supplied printing medium by the thickness detecting unit between the printing medium supplying step (S10) and the image writing step (S20); Can be implemented.
  • the printing method according to the present invention is implemented by a process of supplying the printing medium (S10), detecting the thickness of the supplied printing medium (S15), recording the image on the printing medium (S20), and recovering the printing medium (S30).
  • the printing medium thickness detection step S15 captures the thickness of the printing medium in real time through the camera and transmits the thickness of the printing medium to the control unit.
  • the control unit analyzes the image information transmitted from the camera through image processing to detect the thickness of the printing medium Lt; / RTI >
  • the printing medium thickness detecting step (S15) may include detecting the thickness of the printing medium by comparing the pulse values detected by the first and second encoders provided adjacent to the medium feeding roller provided between the feeding section and the head section, Lt; / RTI >
  • the first encoder is installed to rotate in conjunction with the medium feed roller in contact with one side of the medium feed roller
  • the second encoder is installed to rotate in conjunction with the medium feed roller through the print medium at the other side of the medium feed roller do.
  • the real-time thickness information of the print medium detected through the print medium thickness detection step (S15) is transmitted to the control unit, and the control unit generates the corresponding print parameters according to the real time thickness change of the print medium and applies the generated print parameters to the printing process .
  • the real-time thickness information of the print medium detected through the print medium thickness detection step (S15) is transmitted to the control unit, and the control unit controls the head unit operation in the image recording step (S20) Respectively.
  • the image recording step S20 includes a position changing step S21 for changing the position of the head part, as shown in Fig. 4; A supply amount varying step (S22) for varying a supply amount of ink supplied to the head part; A variable injection amount step (S23) of varying the injection amount of ink injected from the head part; And an injection speed varying step (S24) for varying an injection speed of ink injected from the head part; .
  • the variable position step S21 may be performed before the image recording step S20 in which the printing process is performed.
  • the variable amount step S22, the variable injection amount step S23, and the variable injection speed step S24 may be performed. (S20) in which the printing process is performed.
  • the position changing step S21 and the supply amount varying step S22, the injection amount varying step S23 and the injection speed varying step S24 may be selectively performed through the control of the control unit in the image recording step S20 , This selective control can be made according to the setting of the printing parameters on the printing process.
  • the printing medium on which the image recording step S20 is completed by the setting is recovered through the printing medium recovery step (S30), and the printing process is completed.
  • the present invention can also be implemented by a computer-readable recording medium storing a program for performing the above-described printing method.
  • the present invention can be applied to an analysis and calculation processor, a control processor, An algorithm having a function of controlling the operation in the image recording step S20 according to the detected thickness, and a recording medium on which the program is stored.
  • the printing apparatus and the method provided with the medium thickness calculating function according to the present invention detect the thickness of the printing medium on the supplying side in real time and reflect the printing medium in the printing process, so that high- Can be produced.

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Geometry (AREA)
  • Computer Vision & Pattern Recognition (AREA)
  • Handling Of Sheets (AREA)
  • Ink Jet (AREA)

Abstract

La présente invention concerne un dispositif d'impression comportant une fonction de calcul d'épaisseur de support, comprenant : une unité d'alimentation pour alimenter un support d'impression ; une unité de collecte pour collecter le support d'impression ; une unité de tête qui est placée entre l'unité d'alimentation et l'unité de collecte et imprime une image sur le support d'impression ; une unité de commande pour commander le fonctionnement de l'unité d'alimentation, de l'unité de collecte et de l'unité de tête ; et une unité de détection d'épaisseur placée à côté de l'unité d'alimentation pour détecter l'épaisseur du support d'impression.
PCT/KR2017/007880 2017-07-21 2017-07-21 Dispositif d'impression et procédé comportant une fonction de calcul d'épaisseur de support WO2019017514A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR10-2017-0092332 2017-07-21
KR1020170092332A KR101822918B1 (ko) 2017-07-21 2017-07-21 매체 두께 산정 기능을 구비하는 인쇄 장치 및 방법

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN111761210A (zh) * 2020-08-10 2020-10-13 南通大学 一种铝合金压铸件自动传输精确打标装置及其打标方法

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101970241B1 (ko) * 2018-09-27 2019-04-18 인더스트뷰(주) 자석을 이용한 두께 측정장치

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JPH06270480A (ja) * 1993-03-18 1994-09-27 Kofu Nippon Denki Kk 用紙厚さ検出装置
KR20000047089A (ko) * 1998-12-31 2000-07-25 강병호 열전사헤드 승하강장치
JP3102429B2 (ja) * 1998-08-27 2000-10-23 セイコーエプソン株式会社 印刷装置および印刷方法
JP3345154B2 (ja) * 1994-03-10 2002-11-18 沖電気工業株式会社 電子写真プリンタ
JP2010132419A (ja) * 2008-12-05 2010-06-17 Mimaki Engineering Co Ltd 印刷装置、媒体残量管理装置、媒体残量算出方法、及びプログラム
JP2016088005A (ja) * 2014-11-07 2016-05-23 セイコーエプソン株式会社 印刷装置および印刷方法

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JPH06270480A (ja) * 1993-03-18 1994-09-27 Kofu Nippon Denki Kk 用紙厚さ検出装置
JP3345154B2 (ja) * 1994-03-10 2002-11-18 沖電気工業株式会社 電子写真プリンタ
JP3102429B2 (ja) * 1998-08-27 2000-10-23 セイコーエプソン株式会社 印刷装置および印刷方法
KR20000047089A (ko) * 1998-12-31 2000-07-25 강병호 열전사헤드 승하강장치
JP2010132419A (ja) * 2008-12-05 2010-06-17 Mimaki Engineering Co Ltd 印刷装置、媒体残量管理装置、媒体残量算出方法、及びプログラム
JP2016088005A (ja) * 2014-11-07 2016-05-23 セイコーエプソン株式会社 印刷装置および印刷方法

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111761210A (zh) * 2020-08-10 2020-10-13 南通大学 一种铝合金压铸件自动传输精确打标装置及其打标方法
CN111761210B (zh) * 2020-08-10 2021-12-14 南通大学 一种铝合金压铸件自动传输精确打标装置及其打标方法

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