KR101811226B1 - Printing device of digital printing machine - Google Patents

Printing device of digital printing machine Download PDF

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Publication number
KR101811226B1
KR101811226B1 KR1020150162811A KR20150162811A KR101811226B1 KR 101811226 B1 KR101811226 B1 KR 101811226B1 KR 1020150162811 A KR1020150162811 A KR 1020150162811A KR 20150162811 A KR20150162811 A KR 20150162811A KR 101811226 B1 KR101811226 B1 KR 101811226B1
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KR
South Korea
Prior art keywords
printing paper
guide rail
ink liquid
printing
head assembly
Prior art date
Application number
KR1020150162811A
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Korean (ko)
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KR20170058771A (en
Inventor
최동호
Original Assignee
(주)디지아이
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
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Publication date
Application filed by (주)디지아이 filed Critical (주)디지아이
Priority to KR1020150162811A priority Critical patent/KR101811226B1/en
Publication of KR20170058771A publication Critical patent/KR20170058771A/en
Application granted granted Critical
Publication of KR101811226B1 publication Critical patent/KR101811226B1/en

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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
    • 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
    • B41J11/0025—Handling copy materials differing in width
    • B41J11/003—Paper-size detection, i.e. automatic detection of the length and/or width of 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
    • 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

Abstract

The present invention relates to a printing apparatus for a printing paper for a digital printing machine, which comprises a head assembly which is reciprocally transported along a guide rail member located on the upper side of the main body, a guide rail member And a blocking member provided along the guide rail member to prevent the ink liquid ejected from the head assembly from being scattered toward the sensing member for ink liquid ejection control.
The present invention prevents ink droplets ejected on the printing paper from being scattered toward the sensing member for ink liquid ejection control provided on the guide rail member side and contaminated by the head assembly, And it is possible to detect whether or not printing is possible without limiting the width of the printing paper by arranging the printing paper detecting sensing member and the reflecting plate member in the diagonal direction with reference to the printing paper.

Description

Technical Field [0001] The present invention relates to a printing apparatus for a digital printing machine,

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a printing apparatus for a printing paper for a digital printing machine, and more particularly, to a printing apparatus for a digital printing machine, And the printing paper detection sensing member and the reflection plate member are disposed in the diagonal direction with respect to the printing paper so that the printing paper can be detected without any limitation on the width of the printing paper, To a printing apparatus for a printing paper for a machine.

In general, a digital printing machine is a device that maximizes the precision and clarity of a drawing by outputting the data generated by a computer to a printing paper. In particular, an ink-jet digital printing machine is an apparatus that outputs data stored on the printing paper .

Particularly, in a digital printing machine, a digital control unit digitizes a desired output signal and supplies the three primary colors of magenta (M), yellow (Y), and cyan (C) to a head It is a state-of-the-art printing device that allows the user to draw a desired pattern using a subtractive blending technique that creates multiple colors by overlaying the color on the output paper.

In order to use this subtractive mixing technique, inks having respective colors are individually accommodated and supplied to a head for scanning each color, so that ink of a color to be scanned in each head is superimposed to display a new color.

The technical structure described above is a background technique for assisting the understanding of the present invention, and does not mean the prior art widely known in the technical field to which the present invention belongs.

The printing method is proposed in Korean Patent Laid-Open No. 10-2014-0104363 entitled " Fabric Printing Method and Fabric Printing Apparatus ".

The conventional digital printing machine has a sensor for detecting the ink liquid jet position of the head or the carriage for setting the printing position. The sensor is contaminated by the ink to be jetted, thereby causing a printing failure due to the ink liquid jet position failure have.

In addition, the conventional digital printing machine has a printing paper detecting sensor at both edge positions of the conveying roller. When the width of the printing paper is narrow, the detecting sensor is useless or has to be moved.

Therefore, there is a need to improve this.

SUMMARY OF THE INVENTION The present invention has been conceived in order to solve the above-mentioned problems, and it is an object of the present invention to provide an ink jet recording apparatus in which ink droplets ejected on a printing paper are reciprocated along a guide rail member, The present invention has been made in view of the above problems, and it is an object of the present invention to provide a printing apparatus for a digital printing machine capable of preventing printing defects.

The present invention provides a printing apparatus for a digital printing machine for easily detecting whether or not a printing sheet exists by arranging the printing sheet detection sensing member and the reflecting plate member in a diagonal direction with respect to the printing sheet, There is a purpose.

A printing apparatus of a printing paper for a digital printing machine according to the present invention includes: a head assembly reciprocally transported along a guide rail member located on an upper side of a main body; A sensing member for ink liquid injection control provided along the axial direction on the guide rail member to detect an ink liquid injection timing of the head assembly; And a blocking member provided along the guide rail member to prevent the ink liquid ejected from the head assembly from being scattered toward the sensing member for ink-liquid ejection control.

The blocking member may be made of a flexible material to partially interfere with the guide rail member to reduce interference with the head assembly.

The main body includes a printing paper detection sensing member on the paper feeding side or the paper feeding side of the printing paper and a reflection plate member for detecting the presence or absence of the printing paper depending on whether the signal of the printing paper detection sensing member is reflected on the other side .

Wherein the printing paper detection sensing member is located on the front side of the printing paper; And the reflection plate member is located on the rear side of the printing paper.

As described above, the printing apparatus of the printing paper of the digital printing machine according to the present invention, unlike the prior art, reciprocates the head assembly along the guide rail member, and the ink liquid ejected onto the printing paper is ejected from the ink liquid It is prevented from scattering toward the sensing member side for the injection control to cause contamination, thereby preventing printing defects.

Further, the present invention can easily detect whether or not the printing paper is printed without limiting the width of the printing paper by arranging the printing paper detecting sensing member and the reflecting plate member in the diagonal direction with reference to the printing paper.

1 is a perspective view of a digital printing machine according to an embodiment of the present invention.
2 is a rear perspective view of a digital printing machine according to an embodiment of the present invention.
3 is an enlarged perspective view of a blocking member for protecting a sensing member for ink liquid injection control of a digital printing machine according to an embodiment of the present invention.
4 is a side cross-sectional view of a digital printing machine including a blocking member according to an embodiment of the present invention.
5 is a plan view showing an operation state of the digital printing machine for detecting a printing paper according to an exemplary embodiment of the present invention.

DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of a printing apparatus for a printing paper for a digital printing machine according to the present invention will be described with reference to the accompanying drawings. In this process, the thicknesses of the lines and the sizes of the components shown in the drawings may be exaggerated for clarity and convenience of explanation. In addition, the terms described below are defined in consideration of the functions of the present invention, which may vary depending on the intention or custom of the user, the operator. Therefore, definitions of these terms should be made based on the contents throughout this specification.

FIG. 1 is a perspective view of a digital printing machine according to one embodiment of the present invention, and FIG. 2 is a rear perspective view of a digital printing machine according to an embodiment of the present invention.

FIG. 3 is an enlarged perspective view of a blocking member for protecting a sensing member for ink liquid ejection control of a digital printing machine according to an exemplary embodiment of the present invention. FIG. 4 is a perspective view of a digital printing machine including a blocking member according to an exemplary embodiment of the present invention. Fig.

5 is a plan view showing an operation state of the digital printing machine for detecting a printing paper according to an exemplary embodiment of the present invention.

1 to 5, a printing apparatus 100 of a printing paper 10 for a digital printing machine according to an embodiment of the present invention includes a head assembly 130, a sensing member 140 for ink liquid injection control, Member (150).

At this time, the head assembly 130 reciprocates and ejects the ink liquid to the printing paper 10, and includes a nozzle portion 134 for jetting ink droplets and a carrier 132 for transporting the nozzle portion 134 do.

In addition, the head assembly 130 is reciprocated along the guide rail member 120, and the guide rail member 120 is positioned on the upper side of the main body 110. In particular, the guide rail member 120 is disposed at a predetermined clearance above the main body 110, allowing the output of the printing paper 10. [

The carrier 132 of the head assembly 130 is reciprocally moved with a part thereof mounted on the upper side of the guide rail member 120 and extends downward in the lateral direction of the guide rail member 120. At this time, the carrier 132 can be reciprocated along the guide rail member 120 by various operating sources (not shown) such as an LM guide or a ball screw.

The nozzle unit 134 is mounted on the lower side of the carrier 132 and injects the ink liquid onto the printing paper 10. In other words, the nozzle unit 134 is positioned as close as possible to the printing paper 10, and the ink liquid is sprayed to minimize the spread of the ink liquid.

At this time, the head assembly 130 is reciprocated along the guide rail member 120, and it is necessary to control how much ink liquid is injected at a certain point in time.

To this end, the guide rail member 120 is provided with a sensing member 140 for ink-liquid injection control on its upper side. The sensing member 140 for ink liquid jet control is a sensor for detecting the position of the carrier 132 moved along the guide rail member 120, and a cord strip or the like can be applied.

The sensing member 140 for ink liquid injection control is fixed to the guide rail member 120 so as to be exposed on the upper side of the guide rail member 120 so as to accurately detect the position of the carrier 132 in real time.

The control unit 142 controls the nozzle unit 134 while the sensing member 140 for ink-liquid ejection control detects the position of the carrier 132 in real time. Thus, the nozzle unit 134 controls how much ink liquid is injected by the control unit 142 at any point in time.

Of course, the sensing member 140 for ink liquid injection control may be fixedly mounted on the guide rail member 120 in various manners.

On the other hand, the ink liquid to be ejected may be scattered by an external environment such as wind.

The ink liquid that is scattered can contaminate the sensing member 140 for ink liquid jet control. In this case, since the sensing member 140 for ink-liquid-spray control does not accurately detect the carrier 132, printing failure may be caused.

In order to prevent this, a blocking member 150 is provided.

The blocking member 150 serves to prevent the ink liquid ejected from the head assembly 130 from being scattered toward the sensing member 140 for ink-liquid ejection control.

At this time, the blocking member 150 is provided along the guide rail member 120. In detail, the blocking member 150 is provided along the edge of the nozzle unit 134 side of the guide rail member 120 to prevent the ink liquid from overflowing or scattering toward the sensing member 140 side for controlling the ink liquid injection do.

Particularly, the blocking member 150 is partially inserted into the guide rail member 120 so as to be fixed, thereby facilitating assembly. In addition, the blocking member 150 may be made of a flexible material to reduce movement interference while hitting the moving head assembly 130.

Of course, the blocking member 150 is applicable in various shapes and various materials. In addition, the blocking member 150 can be fixed to the guide rail member 120 in various ways.

On the other hand, when the print paper 10 is not detected on the paper feeding side or the paper discharge side of the main body 110, the ink liquid jetting operation of the head assembly 130 must be stopped within a predetermined time. This is to prevent the main body 110 from being contaminated as the ink liquid is ejected onto the main body 110, and to save ink liquid.

Thus, the main body 110 is provided with a print paper detection sensing member 160 on one side of the paper feeding side of the printing paper 10 or on the inside of the paper feeding side.

The main body 110 is provided with a reflection plate member 170 for detecting the presence or absence of the printing paper 10 depending on whether or not the signal of the printing paper detection sensing member 160 is reflected on the other side of the inside thereof.

For convenience sake, the print paper detection sensing member 160 is provided on the paper feeding side of the main body 110.

The print paper detection sensing member 160 is a photosensor that irradiates a laser beam having a directivity. As a result, the region in which the printing paper detection sensing member 160 can detect the printing paper 10 is enlarged.

In particular, the print paper detection sensing member 160 is located on the front side of the printing paper 10, and the reflection plate member 170 is located on the rear side of the printing paper 10.

That is, the printing paper detection sensing member 160 and the reflection plate member 170 are disposed in the diagonal direction with respect to the printing paper 10, so that the presence or absence of the printing paper 10, regardless of the width of the printing paper 10, Can be detected.

On the other hand, the main body 110 may include a conveyance guide roller 180 that is rotated to guide the printing paper 10 with additional tension at the paper feeding side and the paper feeding side of the printing paper 10, respectively.

In addition, each of the conveyance guide rollers 180 protrudes a stretching member 182 on the circumferential surface. The stretching member 182 is formed by spirally projecting on the circumferential surface of each of the conveyance guide rollers 180 and serves to unfold the printing paper 10 to be conveyed.

At this time, it is also possible to detect whether or not the print paper detection sensing member 160 is wrinkled. When the printing paper 10 is detected to be wrinkled, the conveying guide roller 180 is reciprocated in the axial direction, and the printing paper 10 can be unfolded. In this case, the stretching member 182 is formed so as not to cause injury such as tearing of the printing paper 10 at the time of reciprocating movement.

While the present invention has been particularly shown and described with reference to exemplary embodiments thereof, it will be understood by those of ordinary skill in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention as defined by the appended claims. I will understand. Accordingly, the true scope of the present invention should be determined by the following claims.

10: printing paper 100: printing device
110: main body 120: guide rail member
130: Head assembly 132: Carrier
134:
140: sensing member for ink liquid injection control
142: control unit 150: blocking member
160: printing paper detection sensing member 170: reflection plate member
180: conveying guide roller 182: stretching member

Claims (4)

A carrier reciprocally transported along a guide rail member located on the upper side of the main body and having a head assembly; A sensing member for ink liquid injection control provided along the axial direction on the guide rail member for detecting a position of the carrier to detect an ink liquid injection timing of the head assembly; And a blocking member provided along the guide rail member to prevent the ink liquid ejected from the head assembly from being scattered toward the sensing member for ink-liquid ejection control,
Wherein the blocking member is made of a material having flexibility to partially interfere with the carrier and to reduce interference with the carrier,
Wherein the sensing member for ink liquid jet control is fixedly mounted on the guide rail member so as to be exposed above the guide rail member so as to detect the position of the carrier in real time,
The carriage for conveying the head assembly is reciprocally moved along the guide rails and the head assembly is positioned below the guide rail member along the conveying direction of the printing paper so that the sensing member for ink liquid jetting control is ejected from the lower position To prevent contamination by the ink liquid,
Wherein the blocking member is provided along the head assembly side edge of the guide rail member to prevent the ink liquid from scattering toward the sensing member side for ink liquid jet control,
The main body includes a printing paper detection sensing member on the paper feeding side or the paper feeding side of the printing paper and a reflection plate member for detecting the presence or absence of the printing paper depending on whether the signal of the printing paper detection sensing member is reflected on the other side And,
The printing paper detection sensing member is located on the front side of the printing paper, the reflection plate member is located on the rear side of the printing paper,
Wherein the printing paper detection sensing member and the reflection plate member are disposed in a diagonal direction with respect to the printing paper so that the presence or absence of the printing paper can be detected regardless of the width of the printing paper. delete delete delete
KR1020150162811A 2015-11-19 2015-11-19 Printing device of digital printing machine KR101811226B1 (en)

Priority Applications (1)

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KR1020150162811A KR101811226B1 (en) 2015-11-19 2015-11-19 Printing device of digital printing machine

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Application Number Priority Date Filing Date Title
KR1020150162811A KR101811226B1 (en) 2015-11-19 2015-11-19 Printing device of digital printing machine

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KR20170058771A KR20170058771A (en) 2017-05-29
KR101811226B1 true KR101811226B1 (en) 2017-12-21

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Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT201900018722A1 (en) * 2019-10-14 2021-04-14 Ms Printing Solutions S R L DEVICE AND PROCEDURE FOR PROCESSING MATERIAL IN SHEET, PLANT AND PROCEDURE FOR PRINTING MATERIAL IN SHEET

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4617999B2 (en) * 2005-05-18 2011-01-26 コニカミノルタホールディングス株式会社 Printer
JP2013123826A (en) * 2011-12-13 2013-06-24 Ricoh Co Ltd Image forming apparatus
JP5240225B2 (en) * 2010-03-31 2013-07-17 ブラザー工業株式会社 Recording device

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4617999B2 (en) * 2005-05-18 2011-01-26 コニカミノルタホールディングス株式会社 Printer
JP5240225B2 (en) * 2010-03-31 2013-07-17 ブラザー工業株式会社 Recording device
JP2013123826A (en) * 2011-12-13 2013-06-24 Ricoh Co Ltd Image forming apparatus

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