CN101750420A - Printing material quality online visual inspection system - Google Patents

Printing material quality online visual inspection system Download PDF

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Publication number
CN101750420A
CN101750420A CN200810227492A CN200810227492A CN101750420A CN 101750420 A CN101750420 A CN 101750420A CN 200810227492 A CN200810227492 A CN 200810227492A CN 200810227492 A CN200810227492 A CN 200810227492A CN 101750420 A CN101750420 A CN 101750420A
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CN
China
Prior art keywords
printing
printing cylinder
visual inspection
light source
linear
Prior art date
Application number
CN200810227492A
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Chinese (zh)
Inventor
张殿斌
艾小凯
Original Assignee
北京凌云光视数字图像技术有限公司
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Publication date
Application filed by 北京凌云光视数字图像技术有限公司 filed Critical 北京凌云光视数字图像技术有限公司
Priority to CN200810227492A priority Critical patent/CN101750420A/en
Publication of CN101750420A publication Critical patent/CN101750420A/en

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Abstract

In order to solve the defect of low inspection precision of the printing material quality online visual inspection device, the invention provides a printing material quality online visual inspection system. An inspection machine box and an inspection assembly arranged on the inspection machine box are arranged in a small space formed by a printing cylinder, a transmission link, series inking rollers and an ink delivering roller which are arranged in the printer; one end of the inspection machine box, which is close to the printing cylinder, is provided with a slit which faces to the surface of the printing cylinder and is parallel to the rotating shaft of the printing cylinder; a light source assembly is positioned on one end, which is close to the printing cylinder, of the inspection machine box; a linear array cameral assembly is positioned on one end, which is far away the printing cylinder, of the inspection machine box, and shoots the picture of the printing material on the printing cylinder through the slit; and a coder is arranged on the rotating shaft of the printing cylinder. The invention can perform online inspection for the printing material on the printing cylinder, not only has high inspection precision, but also has smart design and small size, can not occupy additional space, and is suitable for the online inspection for special printing material and common printing material.

Description

Printing material quality online visual inspection system
Technical field
The invention belongs to computer vision technology and industrial detection technical field, particularly a kind of print quality vision detection system.
Background technology
In the prior art, have on printing machine the device that detects the paper printing quality in real time is installed, so that in time find spoilage and shutdown inspection as early as possible.Be the Chinese utility model patent of ZL00262013.8 exercise question as the patent No. for " Renminbi is opened the printing quality on-line measuring device greatly ", this patent relates to a kind of Renminbi and opens the printing quality on-line measuring device greatly, comprise the shooting case that hangs on print stream waterline crawler belt bottom, photoelectric encoder is arranged on the wheel shaft at print stream waterline flex point place, it is the below in chain road that this utility model patent is installed in print stream waterline crawler belt with pick-up unit, pick-up unit carries out real-time printing quality detection to the big banknote of opening on the chain road in the money press, because the big banknote of opening in the transmission is subjected to the influence that the chain road is shaken, the image that pick-up unit collected often has the situation of torsional deformation to take place, can't judge to the quality of printed matter accurately that promptly the technical indicator of pick-up unit is restricted.
Summary of the invention
The print quality on-line measuring device is subjected to chain road effect of jitter to cause detecting the low defective of degree of accuracy in the prior art in order to overcome, the invention provides a kind of printing material quality online visual inspection system, printed matter on the printing cylinder is carried out online detection, not only detect the degree of accuracy height, and design ingenious, volume is little, the outer space outerpace of occupying volume not.
Technical scheme
Printing material quality online visual inspection system, the print quality that is used for online detection press printing, described printing machine comprises printing cylinder, with the chain road that is used to transmit the printed matter after printing cylinder prints, the input end in described chain road is near the printing cylinder surface, and serial ink roller and the distributor rollers that printing ink, pattern are provided that are positioned at below, described chain road, described printing cylinder, chain road and serial ink roller, distributor rollers form a little space along the perforation of printing cylinder axial direction; Described printing material quality online visual inspection system comprises scrambler and the detection cabinet of detection components is installed, described detection components comprises line array video camera assembly and light source assembly, and described detection cabinet and the detection components that is installed on it are arranged in the little space of described printing machine; One end of the close printing cylinder of described detection cabinet is provided with towards the printing cylinder surface, is parallel to the slit of printing cylinder rotating shaft, and the length of described slit is not less than the axial length of printing cylinder; Described light source assembly is positioned on the end of close printing cylinder of described detection cabinet equally, is used to illuminate printed matter surface; Described line array video camera assembly is positioned on the end away from printing cylinder that detects cabinet, and absorbs the image of the printed matter on the printing cylinder by described slit; Described scrambler is arranged in the rotating shaft of printing cylinder.
Described little space is the class triangular prism shape of its parallel axes in described printing cylinder rotating shaft, and the xsect of described class triangular prism is the class del, and described detection cabinet is positioned at the little space of described class triangular prism shape and is provided with near the top.
Described detection cabinet is the class wedge structure, and its small end is towards the printing cylinder surface, and its big end is the printing cylinder surface dorsad.
In described little space, be positioned at detect cabinet below also be provided with support, described support is fixed on the described printing machine, described detection cabinet is removably mounted on the described support.
Described support is the channel-section steel structure, and the two ends of this channel-section steel are separately fixed on the machine watchman's wooden clapper of described printing machine.
The lower surface of described detection cabinet also is set with link, and described detection cabinet is removably mounted on the described support by this link.
Described light source assembly is the linear led light source assembly that comprises the linear array LED luminotron that is parallel to described printing cylinder rotating shaft setting, or is the linear daylight lamp assembly that comprises the linear daylight lamp that is parallel to described printing cylinder rotating shaft setting.
Described light source assembly is two linear led light source assemblies or two linear daylight lamp assemblies, and described two linear led light source assemblies or two linear daylight lamp inter-modules form gallery, and described slit is described gallery.
End towards printing cylinder of described linear led light source assembly is provided with and the corresponding window of linear array LED luminotron, described window is provided with dustproof glass, also is provided with the column glass lens of its parallel axes in the printing cylinder rotating shaft between described linear array LED luminotron and described dustproof glass.
One end of the printing cylinder dorsad of described linear led light source assembly is provided with heating radiator.
Also comprise the light source controlling mechanism that is used to regulate the light source assembly position that is symmetricly set on both sides, described detection cabinet front and back.
Described detection components also comprises the blowing flatten mechanism of gas outlet towards the printing cylinder surface, and described blowing flatten mechanism is positioned at the below of described slit and light source assembly.
Described detection components also comprises its gas outlet of being arranged on described link blowing flatten mechanism towards the printing cylinder surface.
Described gas outlet is the array discharge pipe that is arranged on the end face of close printing cylinder of blowing flatten mechanism, and described array discharge pipe vertically is provided with along described printing cylinder rotor shaft direction.
Described line array video camera assembly comprises at least one linear array CCD camera, and described linear array CCD camera covers the axial length of printing cylinder at least by the coverage sum of described slit shooting printed matter.
Technique effect
Detection cabinet of the present invention and the detection components compact conformation that is installed on it, make the formed little space of printing cylinder, chain road and serial ink roller, distributor rollers in itself and the existing printing machine suitable, made full use of the existing space of printing machine inside, promptly do not take the space outerpace of printing machine, thereby can not influence its operation and attractive in appearance.And the setting of the detection components of printing material quality online visual inspection system of the present invention is that the printed matter that is positioned on the printing cylinder is carried out online detection, the printing cylinder of duty around self rotating shaft at the uniform velocity, smooth rotation, and printed matter is printed the tooth of holding in the month of cylinder and fixes, the jitter phenomenon of printed matter can not take place, avoided the situation of the scalloping that detection system collected in prior art distortion to take place, can accurately judge, improve the accuracy of detection of online vision detection system the quality of printed matter; In addition, the diameter of printing cylinder is very big, and such as the money press of printing Renminbi, the diameter of its printing cylinder is 860mm, and printed matter is that the flatness on the printing cylinder is very high on large diameter cylinder, helps improving the detection quality; In addition, the set position of native system is that the printed matter that just is completed for printing, does not also enter the chain road by printing cylinder is detected, and detects in time, can shut down or take other measures as early as possible, the rate of reducing the number of rejects and seconds to greatest extent in case find waste product.Scrambler of the present invention is set directly in the rotating shaft of printing cylinder, the precise synchronization signal that provides printed matter to rotate.Detection components of the present invention (removing scrambler) all is arranged on and detects on the cabinet, and the detection cabinet removably connects by the link and the support of its lower surface, the convenient installation that detects cabinet and detection components, and the especially convenient dismounting that detects cabinet and detection components is keeped in repair.
Light source assembly of the present invention is linear led light source assembly or linear daylight lamp assembly, is used to illuminate printed matter; Form slit between two linear led light source assemblies that are provided with or two linear daylight lamp assemblies, so that the line array video camera assembly absorbs image on the printed matter by this slit.
Described linear led light source assembly comprises linear array LED luminotron, properly control the electric current of each LED luminotron, can control even illumination and non-uniform lighting, adopt the mode of non-uniform lighting can compensate the visual field gradual halation phenomena that video camera exists, improve the homogeneity of image, help improving the detection quality; Linear led light source assembly is provided with and the corresponding window of linear array LED luminotron towards an end of printing cylinder, and described window is provided with dustproof glass, linear array LED luminotron is sealed, in order to avoid polluted; Also be provided with the column glass lens of its parallel axes between online matrix LED luminotron and the dustproof glass in the printing cylinder rotating shaft, described column glass lens plays the optically focused effect, the light that linear array LED luminotron can be sent accumulates on the printed matter, has improved optical efficiency greatly; The linear led light source assembly heating radiator of an end setting of printing cylinder is dorsad dispersed heat fall, and damages in order to avoid linear array LED luminotron Yin Wendu is too high.
The light source controlling mechanism that is symmetricly set on detection cabinet both sides is used to regulate the position of light source assembly, and the light that light source assembly is sent can accumulate on the printed matter preferably.
Native system also comprises the blowing flatten mechanism, gas blows out from the array discharge pipe uniformly, form air draft and blow to printed matter, make it be close to printing cylinder and can arbitrarily not wave, guarantee that further the line array video camera assembly can absorb clear and distortionless printed matter image, the paper scrap of blowing out on the printed matter and ink particle can also be blown off in addition light source assembly and detect cabinet is in order to avoid polluted.
Figure of description
Fig. 1 is the structural representation of printing material quality online visual inspection system of the present invention;
Fig. 2 is the schematic diagram of printing material quality online visual inspection system of the present invention;
Fig. 3 is the detection cabinet of printing material quality online visual inspection system of the present invention and the structural representation of the detection components that is installed on it;
Fig. 4 is the synoptic diagram of the line array video camera of printing material quality online visual inspection system of the present invention;
Fig. 5 is the linear led light source assembly synoptic diagram of printing material quality online visual inspection system of the present invention;
Fig. 6 is the A-A face sectional view of the linear led light source assembly of printing material quality online visual inspection system of the present invention;
Fig. 7 is the blowing flatten mechanism synoptic diagram of printing material quality online visual inspection system of the present invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
Fig. 1 and Fig. 2 are respectively the structural representation and the schematic diagram of printing material quality online visual inspection system of the present invention.As illustrated in fig. 1 and 2, printing machine includes chain road 1, printing cylinder 2, serial distributor rollers 3a and serial ink roller 3b, the input end in chain road 1 near the surface of printing cylinder 2, be used to transmit the printed matter after printing cylinder 2 printings, series ink roller 3b and serial distributor rollers 3a be positioned at chain road 1 the below, be used to provide printing ink, printed patterns to paper surface, the top of 1 below, described chain road, printing cylinder 2 left sides and serial ink roller 3b, serial distributor rollers 3a forms a little space along the perforation of printing cylinder axial direction.Described little space is a class triangular prism shape, and its parallel axes is the class del in rotating shaft, its xsect of printing cylinder, and to run through printing machine vertical, wide at the top and narrow at the bottom in little space.Detection cabinet 5 of the present invention and the detection components that is installed on it, link 11, support 4 are respectively along printing cylinder axial direction longitudinal extension, interconnect from top to bottom and xsect narrows down successively, the one-piece construction after the connection is just in time suitable with described little space.Wherein, support 4 is positioned at the bottom in described little space for the channel-section steel structure and is fixedly mounted on the machine watchman's wooden clapper of printing machine both sides, link 11 is fixed on the lower surface that detects cabinet 5, detect cabinet 5 and removably connect with support 4, made things convenient for the installation that detects cabinet and because of the dismounting of maintenance or other reason by this link 11.An end that detects the close printing cylinder 2 of cabinet 5 is equipped with two linear led light source assemblies 6 and forms slit to each other, be positioned on the link 11 linear led light source assembly 6 below be provided with the blowing flatten mechanism 7, the both sides, front and back of detecting cabinet 5 are provided with the light source controlling mechanism 8 that is used to regulate the light source assembly position, detect that the end away from printing cylinder 2 of cabinet 5 is longitudinally parallel to be equipped with two line array video camera assemblies 9, scrambler 10 is arranged in the rotating shaft of printing cylinder 2.Detect cabinet 5 and be installed in the detection components that detects on the cabinet 5 and all be arranged in the little space of printing machine inside, design ingeniously, simple in structure, installation, maintenance makes things convenient for; And the printed matter on the printing cylinder is carried out online detection, improve accuracy of detection, shortening detection reaction time, the rate of reducing the number of rejects and seconds.
See Fig. 2, when printing machine was started working, the tooth 2a that holds in the month on the printing cylinder 2 held paper in the month, clockwise rotates so that it follows printing cylinder 2.After paper on the printing cylinder 2 prints off pattern and becomes printed matter through ink roller, just forwarded the slit institute corresponding position of detection system immediately to, accept the detection of printing material quality online visual inspection system, therefore, detection system of the present invention detect shorten in time, greatly from finish printing to time of detecting, significantly reduce the number of rejects and seconds rate, reduce cost.Be arranged on the scrambler 10 in printing cylinder 2 rotating shafts, be used to measure the rotating speed of printing cylinder 2 and the pulse signal of output and printing cylinder rotation precise synchronization, for the linear array colourful CCD video camera 9b in the line array video camera assembly 9 provides the line sweep control signal; Linear array colourful CCD video camera 9b (referring to Fig. 4) is by the coloured image of the printed matter of slit real time shooting motion, and output to information handling system, information handling system comprises image pick-up card, video processing board-card and I/O card etc., be used to gather linear array colourful CCD video camera 9b view data, the printing quality index of printed matter image is handled, provided to image, and the work of branch storehouse, operation work, warning work and statistical work etc. by supervisory system control printing machine.
Fig. 3 is the structural representation of detection cabinet 5 of the present invention and detection components mounted thereto.As shown in the figure, detect cabinet 5 and be the class wedge structure, its lower surface is fixed with along the link 11 of printing cylinder axial direction longitudinal extension, hollow, and removably connects by link 11 and the support 4 under it; The upper surface that detects cabinet 5 is provided with strip wiring duct 5a, can place power lead and signal transmssion line in it, plays effect attractive in appearance and protection.The small end that detects the close printing cylinder 2 of cabinet 5 is provided with two respectively along the linear led light source assembly 6 of printing cylinder axial direction longitudinal extension, two linear led light source assemblies 6 are towards a side of printing cylinder formation slit close to each other, see Fig. 5 for details, be provided with linear array LED luminotron 6a (see figure 6) and this linear array LED luminotron 6a in each linear led light source assembly 6 and be parallel to the rotating shaft longitudinal extension of printing cylinder 2, the end of two linear led light source assemblies 6 is separately fixed at link 6b and upward (sees Fig. 5 (a), (b)), one side of two linear led light source assemblies " eight " word structure that on xsect, forms close to each other, light source is concentrated, and the pairing gallery of little openend of " eight " word structure is slit (seeing Fig. 5 (c)), thereby link 6b is connected to two linear led light source assemblies 6 to be fixed on the light source controlling mechanism 8 and detects on the cabinet 5.Fig. 6 is the A-A face sectional view of linear led light source assembly 6, comprise linear array LED luminotron 6a, can realize evenly illumination or non-uniform lighting by the electric current of controlling each LED luminotron, the visual field gradual halation phenomena that can the compensating line array camera when especially adopting non-uniform lighting exists improves the homogeneity of image; The end towards printing cylinder at linear led light source assembly 6 is provided with the corresponding window with linear array LED luminotron 6a, and window is provided with dustproof glass 6c, and 6a seals with linear array LED luminotron, plays the effect of protection, in order to avoid polluted; Also be provided with the column glass lens 6d of its parallel axes between online matrix LED luminotron 6a and the dustproof glass 6c in printing cylinder 2 rotating shafts, described column glass lens 6d plays the optically focused effect, the light that linear array LED luminotron 6a can be sent accumulates on the printed matter, has improved optical efficiency greatly; One end of the printing cylinder dorsad of linear led light source assembly 6 is provided with heating radiator 6e, is used for heat is dispersed, in order to avoid linear array LED luminotron 6a damages because of temperature is too high.As Fig. 3, be respectively arranged with a light source controlling mechanism 8 in the both sides, front and back of detecting cabinet 5, and link to each other with linear led light source assembly 6 by link 6b, with this position of regulating linear led light source assembly 6, the light that linear array LED luminotron 6a is sent can accumulate on the printed matter preferably.In addition, on link 11, also be provided with blowing flatten mechanism 7, see Fig. 7 for details, synoptic diagram for blowing flatten mechanism 7, the airduct body 7a that comprises the class rectangular structure, be provided with array discharge pipe 7b at a end towards printing cylinder 2, an end relative with array discharge pipe 7b is provided with air intake opening 7c, all the other each faces are hermetically-sealed construction, gas enters blowing flatten mechanism 7 from air intake opening 7c, and blow out from array discharge pipe 7b uniformly, form air draft and blow to printed matter, make printed matter be close to printing cylinder 2 and can arbitrarily not wave, guarantee that further line array video camera assembly 9 can absorb clear and distortionless printed matter image, linear led light source assembly 6 in addition can also blow off the paper scrap of blowing out on the printed matter and ink particle, detect cabinet 5 and other detection components, in order to avoid polluted.Also show two line array video camera assemblies 9 that longitudinally be arranged in parallel among Fig. 3; comprise linear array colourful CCD video camera 9b and the shooting casing 9a that is used to protect linear array colourful CCD video camera 9b; Fig. 4 is the synoptic diagram of linear array colourful CCD video camera 9b; the range of observation of linear array colourful CCD video camera 9b has covered the whole axial length of printing cylinder 2; simultaneously; the setting of two linear array colourful CCD video cameras also makes camera part also have sub-fraction overlapping at the middle part of printed matter; detect the space to eliminate; what the linear array colourful CCD video camera absorbed is coloured image, also can use linear array black-white CCD video camera picked-up black white image.

Claims (15)

1. printing material quality online visual inspection system, the print quality that is used for online detection press printing, described printing machine comprises printing cylinder, with the chain road that is used to transmit the printed matter after printing cylinder prints, the input end in described chain road is near the printing cylinder surface, and serial ink roller and the distributor rollers that printing ink, pattern are provided that are positioned at below, described chain road, described printing cylinder, chain road and serial ink roller, distributor rollers form a little space along the perforation of printing cylinder axial direction; Described printing material quality online visual inspection system comprises scrambler and the detection cabinet of detection components is installed, described detection components comprises line array video camera assembly and light source assembly, it is characterized in that described detection cabinet and the detection components that is installed on it are arranged in the little space of described printing machine; One end of the close printing cylinder of described detection cabinet is provided with towards the printing cylinder surface, is parallel to the slit of printing cylinder rotating shaft, and the length of described slit is not less than the axial length of printing cylinder; Described light source assembly is positioned on the end of close printing cylinder of described detection cabinet equally, is used to illuminate printed matter surface; Described line array video camera assembly is positioned on the end away from printing cylinder that detects cabinet, and absorbs the image of the printed matter on the printing cylinder by described slit; Described scrambler is arranged in the rotating shaft of printing cylinder.
2. printing material quality online visual inspection system according to claim 1, it is characterized in that, described little space is the class triangular prism shape of its parallel axes in described printing cylinder rotating shaft, the xsect of described class triangular prism is the class del, and described detection cabinet is positioned at the little space of described class triangular prism shape and is provided with near the top.
3. printing material quality online visual inspection system according to claim 2 is characterized in that, described detection cabinet is the class wedge structure, and its small end is towards the printing cylinder surface, and its big end is the printing cylinder surface dorsad.
4. according to claim 2 or 3 described printing material quality online visual inspection systems, it is characterized in that, in described little space, be positioned at detect cabinet below also be provided with support, described support is fixed on the described printing machine, described detection cabinet is removably mounted on the described support.
5. printing material quality online visual inspection system according to claim 4 is characterized in that, described support is the channel-section steel structure, and the two ends of this channel-section steel are separately fixed on the machine watchman's wooden clapper of described printing machine.
6. printing material quality online visual inspection system according to claim 4 is characterized in that the lower surface of described detection cabinet also is set with link, and described detection cabinet is removably mounted on the described support by this link.
7. printing material quality online visual inspection system according to claim 1, it is characterized in that, described light source assembly is the linear led light source assembly that comprises the linear array LED luminotron that is parallel to described printing cylinder rotating shaft setting, or is the linear daylight lamp assembly that comprises the linear daylight lamp that is parallel to described printing cylinder rotating shaft setting.
8. printing material quality online visual inspection system according to claim 7, it is characterized in that, described light source assembly is two linear led light source assemblies or two linear daylight lamp assemblies, described two linear led light source assemblies or two linear daylight lamp inter-modules form gallery, and described slit is described gallery.
9. according to claim 7 or 8 described printing material quality online visual inspection systems, it is characterized in that, end towards printing cylinder of described linear led light source assembly is provided with and the corresponding window of linear array LED luminotron, described window is provided with dustproof glass, also is provided with the column glass lens of its parallel axes in the printing cylinder rotating shaft between described linear array LED luminotron and described dustproof glass.
10. printing material quality online visual inspection system according to claim 9 is characterized in that, an end of the printing cylinder dorsad of described linear led light source assembly is provided with heating radiator.
11. printing material quality online visual inspection system according to claim 1 is characterized in that, also comprises the light source controlling mechanism that is used to regulate the light source assembly position that is symmetricly set on both sides, described detection cabinet front and back.
12. printing material quality online visual inspection system according to claim 1, it is characterized in that, described detection components also comprises the blowing flatten mechanism of gas outlet towards the printing cylinder surface, and described blowing flatten mechanism is positioned at the below of described slit and light source assembly.
13. printing material quality online visual inspection system according to claim 6 is characterized in that, described detection components also comprises its gas outlet of being arranged on described link blowing flatten mechanism towards the printing cylinder surface.
14. according to claim 12 or 13 described printing material quality online visual inspection systems, it is characterized in that, described gas outlet is the array discharge pipe that is arranged on the end face of close printing cylinder of blowing flatten mechanism, and described array discharge pipe vertically is provided with along described printing cylinder rotor shaft direction.
15. printing material quality online visual inspection system according to claim 1, it is characterized in that, described line array video camera assembly comprises at least one linear array CCD camera, and described linear array CCD camera covers the axial length of printing cylinder at least by the coverage sum of described slit shooting printed matter.
CN200810227492A 2008-11-27 2008-11-27 Printing material quality online visual inspection system CN101750420A (en)

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Application Number Priority Date Filing Date Title
CN200810227492A CN101750420A (en) 2008-11-27 2008-11-27 Printing material quality online visual inspection system

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744964A (en) * 2012-07-19 2012-10-24 北京华夏视科图像技术有限公司 Curved surface paper flattening device for chain wheel motion of printing machine
CN103434268A (en) * 2013-08-21 2013-12-11 北京华夏视科图像技术有限公司 Detection system for printing device
CN106142834A (en) * 2015-04-27 2016-11-23 北京华夏视科检测技术有限公司 Press quality amount detection machine tool
CN106442534A (en) * 2015-08-04 2017-02-22 泰科电子(上海)有限公司 Automatic detection platform
CN108593581A (en) * 2018-05-16 2018-09-28 西安印钞有限公司 A kind of coating and printing quality detecting system and method based on ultraviolet spectra
CN108621547A (en) * 2017-03-21 2018-10-09 南京造币有限公司 A kind of printing paper flattening device

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102744964A (en) * 2012-07-19 2012-10-24 北京华夏视科图像技术有限公司 Curved surface paper flattening device for chain wheel motion of printing machine
CN102744964B (en) * 2012-07-19 2015-04-22 北京华夏视科图像技术有限公司 Curved surface paper flattening device for chain wheel motion of printing machine
CN103434268A (en) * 2013-08-21 2013-12-11 北京华夏视科图像技术有限公司 Detection system for printing device
CN106142834A (en) * 2015-04-27 2016-11-23 北京华夏视科检测技术有限公司 Press quality amount detection machine tool
CN106442534A (en) * 2015-08-04 2017-02-22 泰科电子(上海)有限公司 Automatic detection platform
CN108621547A (en) * 2017-03-21 2018-10-09 南京造币有限公司 A kind of printing paper flattening device
CN108593581A (en) * 2018-05-16 2018-09-28 西安印钞有限公司 A kind of coating and printing quality detecting system and method based on ultraviolet spectra

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Open date: 20100623