CN107917883B - Method for inspecting color-changing quality of thermal ink printed matter - Google Patents
Method for inspecting color-changing quality of thermal ink printed matter Download PDFInfo
- Publication number
- CN107917883B CN107917883B CN201711153317.9A CN201711153317A CN107917883B CN 107917883 B CN107917883 B CN 107917883B CN 201711153317 A CN201711153317 A CN 201711153317A CN 107917883 B CN107917883 B CN 107917883B
- Authority
- CN
- China
- Prior art keywords
- color
- sample
- detected
- changing
- ink
- Prior art date
- Legal status (The legal status 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 status listed.)
- Active
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N21/00—Investigating or analysing materials by the use of optical means, i.e. using sub-millimetre waves, infrared, visible or ultraviolet light
- G01N21/17—Systems in which incident light is modified in accordance with the properties of the material investigated
- G01N21/25—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands
- G01N21/29—Colour; Spectral properties, i.e. comparison of effect of material on the light at two or more different wavelengths or wavelength bands using visual detection
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
- G01N25/12—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering of critical point; of other phase change
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Spectroscopy & Molecular Physics (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Spectrometry And Color Measurement (AREA)
- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to the field of inspection of thermal ink, in particular to a method for inspecting the color change quality of paper-based materials printed by thermal ink, which comprises the following steps: respectively placing the areas printed with the thermosensitive color-changing ink of the standard sample sheet and the sample to be detected on a temperature control device under the environment with the temperature of 23 +/-1 ℃ and the relative humidity of 50% +/-2%, adjusting the temperature of the temperature control device to be any temperature within a color-changing critical temperature range, respectively applying the pressure of 0.18MPa to the areas printed with the thermosensitive color-changing ink of the standard sample sheet and the sample to be detected, and checking whether the color of the standard sample sheet and the sample to be detected changes after the pressure lasts for 10 +/-1 s. The method of the invention directly aims at the measurement of the thermosensitive color-changing ink printed on the paper base material, is close to the reality, is simple and easy to implement, has more comprehensive and accurate test results, and fills the blank of the existing detection method.
Description
Technical Field
The invention relates to the field of inspection of thermal ink, in particular to a method for inspecting the color change quality of paper-based materials printed by thermal ink.
Background
The discoloration quality of the thermal ink is not determined by a specific standard, and the prior art generally applies the thermal ink to be tested on a test board, and then observes the discoloration condition of the ink at the discoloration critical temperature of the thermal ink. However, the strength and speed of manual painting can affect the color change quality, and disputed detection results can occur in different personnel operations. And because the thermal sensitive ink is printed on the paper base material and is influenced by the printing process and other ink, the mode of simply smearing the thermal sensitive ink on the test board cannot imitate the color change condition of the actual thermal sensitive ink printed on the paper base material, so the color change quality inspection result of the thermal sensitive ink is possibly different from the actual color change quality inspection result of the thermal sensitive ink, and the color change quality inspection result cannot be used as the color change quality inspection basis of the thermal sensitive ink printed on the paper base material.
Disclosure of Invention
The invention provides a method for testing the color-changing quality of a thermal ink printed matter, aiming at solving the problems that the prior art does not have a specific measurement standard to cause disputes of test results and the product quality cannot be effectively controlled.
In the context of the present invention, the thermochromic ink is an ink which is capable of developing a colour change effect upon a change in temperature. When the temperature changes, reversible thermosensitive color-changing ink can change color back and forth, and otherwise, irreversible thermosensitive color-changing ink can change color. The color-changing critical temperature is the temperature at which the color of the ink printing sample changes under the temperature change. Of course, the temperature at which the color of the ink sample changes under the change of temperature is generally a temperature range, and for the sake of simplifying the method, the temperature of the temperature control device is adjusted or the limit temperature of the color change critical temperature range is determined, and the minimum change amount is generally 1 ℃.
In addition, in the present invention, the reason why the pressure of 0.18MPa is applied to the thermosensitive color-changing ink area (or ink layer area) for 10 ± 1s is to make the temperature of the thermosensitive color-changing ink area (or ink layer area) coincide with the temperature of the temperature control device.
The invention is realized by the following technical scheme: a color-changing quality inspection method for printing irreversible thermosensitive color-changing ink on a paper base material comprises the following steps: respectively placing the areas printed with the thermosensitive color-changing ink of the standard sample sheet and the sample to be detected on a temperature control device under the environment of 23 +/-1 ℃ and 50% +/-2% of relative humidity, adjusting the temperature of the temperature control device to be any temperature within a color-changing critical temperature range, respectively applying 0.18MPa pressure to the areas printed with the thermosensitive color-changing ink of the standard sample sheet and the sample to be detected, taking down the standard sample sheet and the sample to be detected after lasting for 10 +/-1 s to check whether the color is changed, and judging that the sample to be detected is qualified if the colors of the standard sample sheet and the sample to be detected are consistent through visual inspection; and if the color of the sample to be detected is not consistent with that of the standard sample, judging that the sample to be detected is unqualified.
The technical scheme of the color-changing quality inspection method for printing irreversible thermosensitive color-changing ink on a paper base material is further improved, when whether the colors are consistent or not is judged, three persons form an inspection group, the three persons independently judge, and the result of consistency of two persons or more than two persons is used as a judgment result.
Further, the invention provides a method for testing the color change quality of reversible thermosensitive color-changing ink printed on a paper base material, which comprises the following steps:
①, respectively placing three standard sample sheets and a to-be-detected sample area printed with thermosensitive color-changing ink on a temperature control device under the environment of 23 +/-1 ℃ and 50% +/-2% relative humidity, adjusting the temperature of the temperature control device to be 1 ℃ lower than the color-changing critical temperature range, respectively applying 0.18MPa pressure to the standard sample sheet and the to-be-detected sample area printed with the thermosensitive color-changing ink, quickly checking the three standard sample sheets and the to-be-detected sample after lasting for 10 +/-1 s to check whether the color is changed, judging that the to-be-detected sample is unqualified by visual inspection if the three standard sample sheets are inconsistent with the to-be-detected sample color, and completing the inspection;
②, respectively placing three standard sample sheets and the area printed with the thermosensitive color-changing ink of the qualified sample to be detected, which is determined by the step ①, on a temperature control device, adjusting the temperature control device to heat up in a mode of 1 ℃/times, respectively applying 0.18MPa pressure to the standard sample sheets and the area printed with the thermosensitive color-changing ink of the sample to be detected while heating up once, and continuing for 10 +/-1 s, determining whether the color-changing temperature of the sample to be detected is within the color-changing critical temperature range, and determining that the sample to be detected is qualified if the color of the sample to be detected within the color-changing critical temperature range is consistent with one color of the three standard sample sheets and the sample to be detected recovers to the same color as the standard sample sheet after the temperature is reduced by visual inspection;
the three standard sample sheets have slightly light, medium and dark colors after being discolored at the same temperature within the discoloration critical temperature range.
In actual production, the color of the ink on the standard proof generates certain fluctuation in the standard range, the fluctuation is caused by the thickness of the ink when the ink is printed by a printing machine, the difference of the thickness is very little, and the color change in the standard range is very little. In order to more accurately test the color change quality of the sample to be tested, the invention adopts three standard sample sheets with relative light, medium and dark colors. In the present invention, the lighter and darker colors are extreme colors in the standard range, and the medium color is a middle color of the extreme colors.
The technical scheme is further improved as a technical scheme of the method for detecting the color change quality of the reversible thermosensitive color-changing ink printing tipping paper, when whether the colors are consistent or not is judged, three persons form an inspection group and independently judge, and the result that two persons or more than two persons are consistent is used as the judgment result.
Furthermore, the method for acquiring the color-changing critical temperature range of the reversible thermosensitive color-changing ink printed on the paper base material comprises the following steps:
① placing the area of the ink layer printed on the sample to be detected on a temperature control device under the environment of 23 +/-1 ℃ and 50 +/-2% of relative humidity, and preparing another sample of the same batch under the same environment to serve as a color-changing control sample, wherein the ink layer comprises reversible thermosensitive color-changing ink, the temperature of the temperature control device is adjusted to be any temperature within the 1/2 color-changing critical temperature range of the reversible thermosensitive color-changing ink, 0.18MPa pressure is applied to the area of the ink layer printed on the sample to be detected, after 10 +/-1 s, the color-changing control sample and the sample to be detected are checked to see whether the color is changed by visual comparison, otherwise, the next step is carried out;
② if the color of the color-changing reference sample is different from the color of the sample to be detected, adjusting the temperature control device to cool and heat in a 1 ℃/th mode, respectively applying 0.18MPa pressure to the area of the ink layer printed on the sample to be detected and keeping the pressure for 10 +/-1 s while cooling and heating once, and determining the limit temperature of the color-changing critical temperature range of the sample to be detected;
③ if the color of the color-changing reference sample is consistent with that of the sample to be detected, adjusting the temperature control device to heat up in a mode of 1 ℃/times, respectively applying 0.18MPa pressure to the area of the ink layer printed on the sample to be detected while heating up once, and continuously keeping for 10 +/-1 s, and checking whether the color of the sample to be detected and the color-changing reference sample changes through visual comparison until the limit temperature of the color-changing critical temperature range of the sample to be detected is determined.
In practice, the possible ink layer areas printed on the paper-based material are only reversible thermochromic inks; however, in some printed tipping paper, the ink layer area may be printed layer by layer with more than two inks (including a reversible thermosensitive color-changing ink), and the determination of color-changing quality by directly using the color-changing critical temperature range of the reversible thermosensitive color-changing ink can cause judgment errors. Therefore, in order to more accurately determine the discoloration critical temperature range, the inventors adopted the discoloration critical temperature range of half of the reversible thermochromic ink (i.e., 1/2 discoloration critical temperature range) as the starting determination temperature. Through years of practical tests, the color change temperature of an ink layer area printed by more than two kinds of ink (including a reversible thermosensitive color change ink) is not lower than half of the color change critical temperature range of the reversible thermosensitive color change ink.
The technical scheme is further improved as a method for acquiring the color-changing critical temperature range of the thermosensitive color-changing ink printed on the paper base material, when whether the colors are consistent or not is judged, three persons form an inspection group, the three persons independently judge, and the result of consistency of two persons or more than two persons is taken as the judgment result.
Compared with the prior art, the invention has the following beneficial effects:
1. the method of the invention directly aims at the measurement of the thermosensitive color-changing ink printed on the paper base material, is close to the reality, and has more comprehensive and accurate test results;
2. the method of the invention has simple operation and high measuring speed;
3. the method is applicable to the strip and box packaging paper which is made of various materials such as offset paper, coated paper, white board paper, white card paper, composite card paper and vacuum aluminized card paper and has the processes of common printing, plain surface laser, light bar laser, transition color, gold stamping and the like and the printing process, and has wide application range.
4. The method fills the blank of the detection of the thermosensitive color-changing ink printed on the paper base material, and plays a key role in controlling the color-changing temperature of the ink on the product and the stability of the color before and after color changing.
5. The method is simple and easy to implement, and provides an efficient method for controlling the production process and the quality of finished products of the products.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the technical solutions of the present invention will be described in detail below. It is to be understood that the described embodiments are merely exemplary of the invention, and not restrictive of the full scope of the invention. All other embodiments, which can be derived by a person skilled in the art from the examples given herein without any inventive step, are within the scope of the present invention.
Example 1 (certain thermochromic inks have a color-change critical temperature range of 42. + -. 2 ℃ C.)
A color change quality inspection method for irreversible thermosensitive color change ink printing tipping paper comprises the following steps: the method comprises the steps of respectively placing a standard sample sheet and a sample to be detected with thermosensitive color-changing ink areas on a temperature control device under the environment of 23 +/-1 ℃ and 50% +/-2% of relative humidity, adjusting the temperature of the temperature control device to be 42 ℃ (or 40,44 ℃), respectively applying 0.18MPa pressure to the standard sample sheet and the sample to be detected with thermosensitive color-changing ink areas, checking whether the standard sample sheet and the sample to be detected change color or not after lasting for 10 +/-1 s, and judging whether the standard sample sheet and the sample to be detected are consistent through visual inspection and three-person independent judgment, wherein two persons consistently judge that the standard sample sheet and the sample to be detected are consistent in color, and judging that the.
Example 2 (certain thermochromic inks have a color-change critical temperature range of 42. + -. 2 ℃ C.)
A color change quality inspection method for reversible thermosensitive color change ink printing tipping paper comprises the following steps:
①, respectively placing three standard sample sheets and a to-be-detected sample area printed with thermosensitive color-changing ink on a temperature control device under the environment of 23 +/-1 ℃ and 50% +/-2% of relative humidity, adjusting the temperature of the temperature control device to 39 ℃, respectively applying 0.18MPa pressure to the standard sample sheet and the to-be-detected sample area printed with the thermosensitive color-changing ink, after lasting for 10 +/-1 s, quickly checking whether the three standard sample sheets and the to-be-detected sample are color-changed, and judging the to-be-detected sample to be qualified by visual inspection and three independent judgments, wherein three people judge that the three standard sample sheets and the to-be-detected sample are consistent in color and do not change color, and then carrying out the next step;
② placing three standard sample sheets and the area printed with the thermosensitive color-changing ink of the qualified sample to be detected, which is determined by the step ①, on a temperature control device, adjusting the temperature control device to heat up in a mode of 1 ℃/times, applying pressure of 0.18MPa to the standard sample sheets and the area printed with the thermosensitive color-changing ink of the sample to be detected while heating up once, and continuing for 10 +/-1 s, determining whether the color-changing temperature of the sample to be detected is within 40-44 ℃, and judging three persons independently through visual inspection, wherein the color-changing of the sample to be detected within 40-44 ℃ (40, 41, 42, 43 and 44 ℃ respectively) is consistent with the color of the second sample in the three standard sample sheets, and the sample to be detected recovers to the same color as the standard sample sheets after the temperature is reduced, and then determining that the sample to be detected is qualified.
Example 3 (certain reversible thermochromic inks have a color change critical temperature range of 62. + -. 2 ℃ C.)
A method for acquiring a color-changing critical temperature range of reversible thermosensitive color-changing ink printing tipping paper comprises the following steps:
① placing the area of the ink layer printed on the sample to be detected on a temperature control device under the environment of 23 +/-1 ℃ and 50 +/-2% of relative humidity, and preparing another sample of the same batch under the same environment to serve as a color-changing control sample, wherein the ink layer comprises reversible thermosensitive color-changing ink, the temperature of the temperature control device is adjusted to be 32 ℃, 0.18MPa pressure is applied to the area of the ink layer printed on the sample to be detected, after 10 +/-1 s, the sample to be detected and the color-changing control sample are checked through visual comparison, and three persons judge independently, wherein three persons judge that the color is not changed and the color is consistent;
② the color of the color-changing reference sample is consistent with that of the sample to be tested, the temperature control device is adjusted to heat up in a mode of 1 ℃/times, 0.18MPa pressure is respectively applied to the area of the ink layer printed on the sample to be tested while the temperature is raised once, and the area lasts for 10 +/-1 s, whether the color of the sample to be tested and the color-changing reference sample changes is checked through visual comparison until the lowest limit temperature of the color-changing critical temperature range of the sample to be tested is determined to be 45 ℃, and the highest limit temperature is 48 ℃, so that the color-changing critical temperature range of the printing tipping paper is determined to be 45-.
The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and all the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the appended claims.
Claims (2)
1. A color-changing quality inspection method for printing reversible thermosensitive color-changing ink on a paper base material is characterized by comprising the following steps:
①, respectively placing three standard sample sheets and a to-be-detected sample area printed with thermosensitive color-changing ink on a temperature control device under the environment of 23 +/-1 ℃ and 50% +/-2% relative humidity, adjusting the temperature of the temperature control device to be 1 ℃ lower than the color-changing critical temperature range, respectively applying 0.18MPa pressure to the standard sample sheet and the to-be-detected sample area printed with the thermosensitive color-changing ink, rapidly checking whether the three standard sample sheets and the to-be-detected sample are discolored after lasting for 10 +/-1 s, judging that the to-be-detected sample is unqualified if the three standard sample sheets and the to-be-detected sample are not in color through visual inspection, and completing the inspection, otherwise, performing the next step;
②, respectively placing three standard sample sheets and the area printed with the thermosensitive color-changing ink of the qualified sample to be detected, which is determined by the step ①, on a temperature control device, adjusting the temperature control device to heat up in a mode of 1 ℃/times, respectively applying 0.18MPa pressure to the standard sample sheets and the area printed with the thermosensitive color-changing ink of the sample to be detected while heating up once, and continuing for 10 +/-1 s, determining whether the color-changing temperature of the sample to be detected is within the color-changing critical temperature range, and determining that the sample to be detected is qualified if the color of the sample to be detected within the color-changing critical temperature range is consistent with one color of the three standard sample sheets and the sample to be detected recovers to the same color as the standard sample sheet after the temperature is reduced by visual inspection;
the three standard sample sheets have slightly light, medium and dark colors after being discolored at the same temperature within the discoloration critical temperature range.
2. The method for inspecting color change quality of a reversible thermochromic ink printed on a paper-based material according to claim 1, wherein when determining whether the colors are consistent, three persons form an inspection group, the three persons independently judge, and the result of the consistency of two or more persons is used as the determination result.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010492751.5A CN111504919B (en) | 2017-11-20 | 2017-11-20 | Method for obtaining color-changing critical temperature range of thermosensitive color-changing ink printing tipping paper |
| CN201711153317.9A CN107917883B (en) | 2017-11-20 | 2017-11-20 | Method for inspecting color-changing quality of thermal ink printed matter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711153317.9A CN107917883B (en) | 2017-11-20 | 2017-11-20 | Method for inspecting color-changing quality of thermal ink printed matter |
Related Child Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010492751.5A Division CN111504919B (en) | 2017-11-20 | 2017-11-20 | Method for obtaining color-changing critical temperature range of thermosensitive color-changing ink printing tipping paper |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN107917883A CN107917883A (en) | 2018-04-17 |
| CN107917883B true CN107917883B (en) | 2020-07-03 |
Family
ID=61897434
Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010492751.5A Active CN111504919B (en) | 2017-11-20 | 2017-11-20 | Method for obtaining color-changing critical temperature range of thermosensitive color-changing ink printing tipping paper |
| CN201711153317.9A Active CN107917883B (en) | 2017-11-20 | 2017-11-20 | Method for inspecting color-changing quality of thermal ink printed matter |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010492751.5A Active CN111504919B (en) | 2017-11-20 | 2017-11-20 | Method for obtaining color-changing critical temperature range of thermosensitive color-changing ink printing tipping paper |
Country Status (1)
| Country | Link |
|---|---|
| CN (2) | CN111504919B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109900587A (en) * | 2019-03-09 | 2019-06-18 | 徐立杰 | A kind of device of the measurement heat-sensitive materials water content with multiple measurement positions |
| CN114324198B (en) * | 2021-12-16 | 2023-11-14 | 重庆冠宇电池有限公司 | Battery cell dispensing quality detection method |
| CN117554305A (en) * | 2024-01-12 | 2024-02-13 | 沈阳圣祥科技有限公司 | Color-changing quality inspection method and system for ink printed matter |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104777162A (en) * | 2015-04-17 | 2015-07-15 | 深圳九星印刷包装集团有限公司 | Color change indicating device |
| CN105324446A (en) * | 2013-06-12 | 2016-02-10 | 锡克拜控股有限公司 | Heat sensitive tamper indicating markings |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5552364A (en) * | 1992-03-09 | 1996-09-03 | Ricoh Company, Ltd. | Reversible theromosensitive coloring recording method, recording medium and recording apparatus for the recording method |
| US20030113923A1 (en) * | 2001-12-12 | 2003-06-19 | Puntambekar Shobha Shakher | Steam-formaldehyde sterilization process indicator inks |
| CN2660521Y (en) * | 2004-03-02 | 2004-12-01 | 南昌印钞厂 | Drying detector for printing ink |
| US8569208B1 (en) * | 2008-12-23 | 2013-10-29 | Segan Industries, Inc. | Tunable directional color transition compositions and methods of making and using the same |
| JP5506224B2 (en) * | 2009-03-27 | 2014-05-28 | 三菱鉛筆株式会社 | Thermal decolorizable ink composition |
| US20100264640A1 (en) * | 2009-04-17 | 2010-10-21 | Lane T Randall | Device for obcuring printed indicia and method of use |
| CN101788460B (en) * | 2010-02-05 | 2012-05-02 | 中国印钞造币总公司 | Method for detecting color change of note ink |
| CN201819874U (en) * | 2010-10-08 | 2011-05-04 | 珠海天威飞马打印耗材有限公司 | Device for quantifying surface dry degree of ink belt |
| DE102011121689A1 (en) * | 2011-01-13 | 2012-07-19 | Heidelberger Druckmaschinen Ag | Method and device for determining the degree of hardening of printing inks |
| JP2015058579A (en) * | 2013-09-17 | 2015-03-30 | 三菱製紙株式会社 | Reversible thermosensitive recording material |
| CN103884735B (en) * | 2014-04-02 | 2016-01-20 | 甘肃烟草工业有限责任公司 | The method of testing of cigarette wrapping paper Thermal Resistant Surface performance |
| CN106459637B (en) * | 2014-04-24 | 2019-10-01 | 株式会社百乐 | Reversible thermochromic seal ink composition and seal |
| CN104931435B (en) * | 2015-06-25 | 2017-08-01 | 上海出入境检验检疫局工业品与原材料检测技术中心 | A kind of heat-sensitive variable colour textile test instrument |
-
2017
- 2017-11-20 CN CN202010492751.5A patent/CN111504919B/en active Active
- 2017-11-20 CN CN201711153317.9A patent/CN107917883B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105324446A (en) * | 2013-06-12 | 2016-02-10 | 锡克拜控股有限公司 | Heat sensitive tamper indicating markings |
| CN104777162A (en) * | 2015-04-17 | 2015-07-15 | 深圳九星印刷包装集团有限公司 | Color change indicating device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111504919A (en) | 2020-08-07 |
| CN111504919B (en) | 2023-06-23 |
| CN107917883A (en) | 2018-04-17 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN107917883B (en) | Method for inspecting color-changing quality of thermal ink printed matter | |
| CN101518980A (en) | Printing color quality detecting method of integrating visual measurement, density measurement and color measurement | |
| CN110567836A (en) | method and system for rapidly checking and determining tobacco shred online moisture meter | |
| CN104458592A (en) | Printing ink covering intensity detection method | |
| CN104417043B (en) | Opaque white multistage regulation and measuring method | |
| CN103674858A (en) | Method and device for rapidly detecting liquor color of tea water | |
| EP3446085A1 (en) | Press operator target, lmd standard and colour proof assembly | |
| CN109605964A (en) | A kind of standardized printing control method | |
| CN110514558B (en) | Laboratory testing device and method for water-based ink printing roller sticking | |
| CN108226056A (en) | A kind of method for improving form and aspect accuracy of detection | |
| CN102288535A (en) | Method for determining lightproof performance of cigarette wrapping paper | |
| CN112504984B (en) | Simple test method for saturated luminous color density of low-quantitative thermal sensitive paper | |
| CN103884735B (en) | The method of testing of cigarette wrapping paper Thermal Resistant Surface performance | |
| Hanzer et al. | Mechanical and chemical resistance of thermochromic packaging prints | |
| CN212621091U (en) | Online chromatic aberration detection system | |
| CN106739484B (en) | A method of prediction printed matter drying process color change | |
| CN108956486B (en) | Dye evaluation method | |
| CN104280304A (en) | Friction resistant performance evaluation method of paper printing ink printing layer | |
| CN108872062A (en) | A kind of quick-fried color determination method of package printed matter | |
| CN105644146B (en) | A kind of simple gold stamping test method of offset litho printing ink | |
| CN105572055A (en) | Non-contact type color detecting method based on digital image technology | |
| JPH10315436A (en) | Apparatus for quality control of printed matter | |
| Radkova et al. | Effect of dry-heat ageing on label paper quality | |
| CN109142282A (en) | A kind of detection method of titanium dioxide covering power in ink | |
| CN111579219A (en) | Method for detecting power of UV lamp |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |