CN105799343A - Ink-jet printing apparatus and printing medium stepping error detection method - Google Patents

Ink-jet printing apparatus and printing medium stepping error detection method Download PDF

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Publication number
CN105799343A
CN105799343A CN201610120222.6A CN201610120222A CN105799343A CN 105799343 A CN105799343 A CN 105799343A CN 201610120222 A CN201610120222 A CN 201610120222A CN 105799343 A CN105799343 A CN 105799343A
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CN
China
Prior art keywords
print media
detection image
stepping
described
inkjet
Prior art date
Application number
CN201610120222.6A
Other languages
Chinese (zh)
Inventor
韩京华
詹彤宇
程亮
Original Assignee
北京博源恒芯科技有限公司
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Application filed by 北京博源恒芯科技有限公司 filed Critical 北京博源恒芯科技有限公司
Priority to CN201610120222.6A priority Critical patent/CN105799343A/en
Publication of CN105799343A publication Critical patent/CN105799343A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, e.g. INK-JET PRINTERS, THERMAL PRINTERS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J29/00Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
    • B41J29/38Drives, motors, controls or automatic cut-off devices for the entire printing mechanism

Abstract

The invention provides an ink-jet printing apparatus. The ink-jet printing apparatus comprises a paper feeding device used for conveying a printing medium; an ink injecting device used for injecting drops of ink and provided with a plurality of ink injecting holes; a control system is used for controlling that the ink injecting device sprays a plurality of detection patterns onto a printing medium in the feeding direction perpendicular to the printing medium. The detection patterns are used to detect whether there are errors in the process of conveying paper. According to the invention, detection patterns are adopted to detect possible printing medium stepping errors and detection patterns are printed many times so that the errors are enlarged and that more accurate results are ensured.

Description

Inkjet-printing device and print media stepping error detection method

Technical field

The present invention relates to inkjet printing field, in particular relate to a kind of method detecting inkjet-printing device stepping error and use the inkjet-printing device of the method.

Background technology

Inkjet technology refers to by being ejected on print media by ink droplet to form the technology of image or word.Owing to inkjet printing has noncontact, pollutes the feature such as little, print speed is fast and get more and more now in Industrial Printing, in Reel-to-reel type inkjet-printing device, print media is driven by multiple paper-sheets rolling wheels and does step motion, and the paper-sheets rolling wheel printing the more wide needs of fabric width is more many.For saving cost, print media is more and more thinner, and due to the reason of Machine Design, mechanical assembly and pressure roller mismachining tolerance etc., cause on different print media positions, it is inconsistent that print media is walked, and this is inconsistent very little, but under high-precision ink discharge device, print quality can be excessively poor, therefore dispatches from the factory at inkjet-printing device and how to detect in the maintenance process of inkjet-printing device whether the stepping of inkjet-printing device accurately seems particularly significant fast and accurately.

Summary of the invention

For prior art Problems existing, it is an object of the invention to propose a kind of can easily and fast, the detection print media stepping inkjet-printing device accurately for preparing and inkjet printing methods.

For achieving the above object, the present invention proposes a kind of inkjet-printing device and includes: paper feeder, is used for carrying print media;Ink discharge device, is used for spraying ink droplet, and described ink discharge device arranges multiple jet orifice;Control system, is used for controlling ink discharge device and sprays multiple check pattern to print media along being perpendicular to print media direction of feed, and wherein, the plurality of check pattern is used for detecting whether described print media stepping exists error.

In above-mentioned inkjet-printing device, also include pattern detection device, be used for detection image and detection image information is sent to control system.

In above-mentioned inkjet-printing device, also include display device, be used for showing testing result.

In above-mentioned inkjet-printing device, described conveyer device includes multiple pressure roller, multiple feed roller, paper-pressing mechanism and driving mechanism, during printing, print media is interspersed between pressure roller and feed roller, pressure roller is pressed to feed roller by paper-pressing mechanism, and driving mechanism drives feed roller to drive print media to do step motion.

In above-mentioned inkjet-printing device, detection image is formed: adopt the first jet orifice injection ink droplet of ink discharge device to form the first detection image to print media by following operation, print media stepping once, adopts the second jet orifice injection ink droplet of ink discharge device to form the second detection image to print media.

In above-mentioned inkjet-printing device, along print media step direction, the distance between described first jet orifice and the second jet orifice is equal with the distance of print media stepping.

In above-mentioned inkjet-printing device, described first detection image and described second detection image are different images.

In above-mentioned inkjet-printing device, described first detection image includes multiple first patterns of uniform printing fabric width, and described second detection image includes being multiple second images printing fabric width.

Another object of the present invention is to propose a kind of print media stepping error detection method, described method is applied in the inkjet-printing device containing conveyer device, it is characterized in that, described detection method comprises the following steps, on print media, the first detection image is formed along being perpendicular to print media direction of feed injection ink droplet, print media stepping once, forms the second detection image along being perpendicular to print media direction of feed injection ink droplet on print media;Whether detection the first detection image and the second detection image be consistent in the spacing along print media direction of feed, if spacing is equal, then print media stepping is consistent, if spacing is unequal, then print media stepping is inconsistent.

In above-mentioned print media stepping error detection method, also include along print media direction of feed, when first detect spacing between image and the second detection image consistent, whether detection spacing equal to setting threshold value, if spacing is equal to setting threshold value, then print media stepping is accurate;If spacing is not equal to setting threshold value, then print media stepping is inaccurate.

In above-mentioned print media stepping error detection method, whether detect described first detection image and described second detection image after also including the described first detection image of circulation printing and described second detection image at least twice in the spacing in print media direction of feed equal to setting threshold value.

Accompanying drawing explanation

Fig. 1 is the structural representation of the inkjet-printing device of the present invention;

Fig. 2 is another structural representation of the inkjet-printing device of the present invention;

Fig. 3 is the detection image of the inkjet-printing device stepping detection of the present invention;

The detection image that Fig. 4 is during the single pass printing of one specific embodiment of the present invention prints schematic diagram;

Fig. 5 is that the detection image during multiple-pass printing of another specific embodiment of the present invention prints schematic diagram;

Fig. 6 is the flow chart of the stepping detection method of the present invention.

Detailed description of the invention

In order to make the purpose of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is further elaborated.

As depicted in figs. 1 and 2, the inkjet-printing device of the present invention includes printing dolly 2, printing, dolly 2 arranges one for installing the base plate 2 of ink discharge device, at least one ink discharge device is installed on a base plate 2, ink discharge device arranges multiple jet orifice for spraying ink droplet.Print dolly 2 and be arranged on guide rail beam 3, dolly 2 is printed along the guide rail 4 being arranged on guide rail beam 3 (the printhead direction of motion in the first direction under the driving of drive motor 6, namely main scanning direction) move reciprocatingly, printing dolly 2 to be connected with drive motor 6 by the combination of belt belt wheel, the drive motor 6 in the present invention selects servomotor.Print dolly 2, at rear side, one slide block (not shown) is installed, realize printing the reciprocating motion of dolly 2 by slide block and track combination.Also installing a grating scale 5 on guide rail beam 3, be provided with grating read head printing on dolly 2, grating read head coordinates with grating scale 5, determines ink discharge device ink jetting position in a first direction by grating scale 5.Also setting up on dolly 2 for the assistant print cartridges 8 of printhead ink supply printing, wherein the quantity of assistant print cartridges 8 is consistent with printing the number of colours needing injection ink, and an assistant print cartridges 8 can at least one ink discharge device ink supply of injection same colors of ink.Print media 7 is arranged on the underface printing dolly 2, inkjet-printing device in the present invention can be Reel-to-reel type inkjet-printing device, print media 7 under the driving of conveyer device 9 in a second direction (print media direction of feed, namely sub scanning direction) do step motion.Conveyer device in broad width ink jet printing equipment includes multiple pressure roller, multiple feed roller, paper-pressing mechanism and driving mechanism, during printing, print media is interspersed between pressure roller and feed roller, pressure roller is pressed to feed roller by paper-pressing mechanism, and driving mechanism drives feed roller to drive print media to do step motion.The inkjet-printing device of the present invention also includes a control system, and control system controls ink discharge device and sprays multiple check pattern to print media along being perpendicular to print media direction of feed, and wherein, multiple check pattern are used for detecting whether paper feeder conveying exists error.Ink discharge device in the present invention is piezoelectric ink jet device or hot bubble type ink jet device.

The inkjet-printing device of the present invention passes through following operation and forms detection image: print with four times (Pass), it is assumed that ink discharge device has 1024 jet orifice, and printing fabric width is 3.2m is example, then 4Pass 256 jet orifice of each stepping.The first detection image is printed initially with jet orifice P1, the first detection image in the present invention is for being perpendicular to print media direction of feed from left to right, one dotted line (the first detection image in the present invention can also arrange bold portion 3cm, dotted portion 3cm) of full fabric width (3.2m).Then along 256 jet orifice of print media direction of feed stepping, (the second detection image in the present invention is for being perpendicular to print media direction of feed from left to right to adopt the 256th jet orifice second to detect image after stepping, one solid line of full fabric width (3.2m), if the second detection image covers all the first detection image (namely bold portion is completely covered dotted portion), illustrates that stepping is consistent and stepping is accurately shown in the A in Fig. 3.Observe for ease of operator, the first detection image and the second detection image in the present invention can adopt colour-difference to be formed from two kinds of bigger ink injections, as adopted the first jet orifice injection of the first ink discharge device of injection magenta ink to form the first detection image, print media stepping is once, the the second jet orifice injection adopting the second ink discharge device of injection cyan ink forms the second detection image, wherein, along print media direction of feed, the distance of print media stepping is equal to the distance between the first jet orifice and the second jet orifice.

Specifically, in Fig. 3 shown in B, the solid line X1 that the second detection image is full fabric width in the present invention, the five sections of dotted lines that the first detection image is uniform fabric width in the present invention, the first dotted line X21, the second dotted line X22, the 3rd dotted line X23, the 4th dotted line X24 and the five dotted line X25.The distance of the first dotted line X21 distance distance of solid line X1 and the second dotted line X22 distance solid line X1 in figure, the distance of the 3rd dotted line X23 distance solid line X1, the distance of the 4th dotted line X24 distance solid line X1, the distance of the 5th dotted line X25 distance solid line X1 is all equal, then illustrate that the stepping of print media in this case is consistent, but there is deviation in stepping, the deviation of stepping is and detects image distance second along print media direction of feed first and detect the distance of image, further, along print media direction of feed, if the first detection image is positioned at the front end of the second detection image, then illustrate that the stepping of print media is less than printing step value;If the first detection image is positioned at the rear end of the second detection image, then illustrate that the stepping of print media is more than printing step value.

Additionally also a kind of situation is, in Fig. 3 shown in C, second detection image cannot cover the first detection image, and five sections of dotted line distances second that first in detection image to detect the distance of image not all equal or all equal, specifically, in figure first detection image in first dotted line X21 distance the distance of distance solid line X1 of solid line X1, second dotted line X22 distance the distance of solid line X1, the 3rd dotted line X23 distance the distance of solid line X1, the 4th dotted line X24 distance the distance of solid line X1, the 5th dotted line X25 distance solid line X1 distance all have at least two unequal.Then illustrate that in this situation, the stepping of print media is inconsistent, and stepping is inaccurate.Correct print media stepping for ease of operator to be forbidden, in the first detection image in the present invention, the quantity of phantom line segments is preferably positioned to consistent with the quantity of the pressure roller in inkjet-printing device, and the position being perpendicular to print media direction of feed (X-direction) dotted line is preferably disposed on pressure roller in the position of X-direction correspondence.

If Fig. 4 is detection image schematic diagram during single pass printing, when print media stepping exists error, it is assumed that stepping error amount is d, not easy to identify when error is less;As shown in Figure 5, when adopting multiple-pass printing, when printing as adopted three times, the error amount of print media is 3d, adopt four times when printing, the error amount of print media is 4d, adopts the error detection method of the present invention print media stepping error to be amplified, thus ensureing that stepping error-detecting is more accurate.

As shown in Figure 6, the print media print media stepping error detection method of the present invention includes employing ink discharge device spraying the first detection image on print media, print media stepping is once, adopt ink discharge device injection the second detection image on print media, by judging along the distance of print media direction of feed and the difference of threshold value, the first detection image and the second detection image are judging that whether print media stepping is consistent.Whether print media stepping error detection method in the present invention detects described first detection image and described second detection image in the spacing in print media direction of feed equal to setting threshold value after also including the described first detection image of circulation printing and described second detection image at least twice.

Mode used above is merely to illustrate the present invention; and not to the restriction invented, about the those of ordinary skill of technical field, without departing from the spirit and scope of the present invention; can also making a variety of changes and modification, therefore all equivalent technical schemes fall within the protection category of the present invention.

Claims (10)

1. an inkjet-printing device, including:
Paper feeder, is used for carrying print media;
Ink discharge device, is used for spraying ink droplet, and described ink discharge device arranges multiple jet orifice;
Control system, is used for controlling ink discharge device and sprays multiple check pattern to print media along being perpendicular to print media direction of feed, and wherein, the plurality of check pattern is used for detecting whether described print media stepping exists error.
2. inkjet-printing device as claimed in claim 1, it is characterised in that also including pattern detection device and display device, wherein pattern detection device is used for detection image and detection image information is sent to control system, and display device is used for showing testing result.
3. inkjet-printing device as claimed in claim 1, it is characterized in that, described conveyer device includes multiple pressure roller, multiple feed roller, paper-pressing mechanism and driving mechanism, during printing, print media is interspersed between pressure roller and feed roller, and pressure roller is pressed to feed roller by paper-pressing mechanism, and driving mechanism drives feed roller to drive print media to do step motion.
4. inkjet-printing device as claimed in claim 1, it is characterized in that, detection image is formed: adopt the first jet orifice injection ink droplet of ink discharge device to form the first detection image to print media by following operation, print media stepping once, adopts the second jet orifice injection ink droplet of ink discharge device to form the second detection image to print media.
5. inkjet-printing device as claimed in claim 4, it is characterised in that along print media step direction, the distance between described first jet orifice and the second jet orifice is equal with the distance of print media stepping.
6. inkjet-printing device as claimed in claim 4, it is characterised in that described first detection image and described second detection image are different images.
7. inkjet-printing device as claimed in claim 4, it is characterised in that described first detection image includes multiple first patterns of uniform printing fabric width, and described second detection image includes being multiple second images printing fabric width.
8. a print media stepping error detection method, described method is applied in the inkjet-printing device containing conveyer device, it is characterized in that, described detection method comprises the following steps, on print media, the first detection image is formed along being perpendicular to print media direction of feed injection ink droplet, print media stepping once, forms the second detection image along being perpendicular to print media direction of feed injection ink droplet on print media;Whether detection the first detection image and the second detection image be consistent in the spacing along print media direction of feed, if spacing is equal, then print media stepping is consistent, if spacing is unequal, then print media stepping is inconsistent.
9. print media stepping error detection method as claimed in claim 8, it is characterized in that, be additionally included in the first detection image and second detection image spacing between print media direction of feed consistent, whether detection spacing is equal to setting threshold value, if spacing is equal to setting threshold value, then print media stepping is accurate;If spacing is not equal to setting threshold value, then print media stepping is inaccurate.
10. print media stepping error detection method as claimed in claim 8, it is characterized in that, whether detect described first detection image and described second detection image after also including the described first detection image of circulation printing and described second detection image at least twice in the spacing in print media direction of feed equal to setting threshold value.
CN201610120222.6A 2016-03-03 2016-03-03 Ink-jet printing apparatus and printing medium stepping error detection method CN105799343A (en)

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1533907A (en) * 2003-01-18 2004-10-06 三星电子株式会社 Method and device used for correcting printing error
JP2007098759A (en) * 2005-10-04 2007-04-19 Seiko Epson Corp Recorder
CN101284459A (en) * 2007-04-10 2008-10-15 佳能株式会社 Printing apparatus and the method of acquiring correction value of conveying error
CN101905576A (en) * 2009-06-08 2010-12-08 佳能株式会社 Recording equipment and method for adjusting recording position
CN103481682A (en) * 2013-08-29 2014-01-01 深圳市新国都技术股份有限公司 Method and system for correcting deviation of needle printer

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1533907A (en) * 2003-01-18 2004-10-06 三星电子株式会社 Method and device used for correcting printing error
JP2007098759A (en) * 2005-10-04 2007-04-19 Seiko Epson Corp Recorder
CN101284459A (en) * 2007-04-10 2008-10-15 佳能株式会社 Printing apparatus and the method of acquiring correction value of conveying error
CN101905576A (en) * 2009-06-08 2010-12-08 佳能株式会社 Recording equipment and method for adjusting recording position
CN103481682A (en) * 2013-08-29 2014-01-01 深圳市新国都技术股份有限公司 Method and system for correcting deviation of needle printer

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Application publication date: 20160727

RJ01 Rejection of invention patent application after publication