CN111421975B - Anti-interference printing process for patterns of mobile phone shell and mobile phone shell - Google Patents
Anti-interference printing process for patterns of mobile phone shell and mobile phone shell Download PDFInfo
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- CN111421975B CN111421975B CN202010401019.2A CN202010401019A CN111421975B CN 111421975 B CN111421975 B CN 111421975B CN 202010401019 A CN202010401019 A CN 202010401019A CN 111421975 B CN111421975 B CN 111421975B
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- mobile phone
- file
- phone shell
- image
- dot
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/10—Intaglio printing ; Gravure printing
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41C—PROCESSES FOR THE MANUFACTURE OR REPRODUCTION OF PRINTING SURFACES
- B41C1/00—Forme preparation
- B41C1/02—Engraving; Heads therefor
- B41C1/04—Engraving; Heads therefor using heads controlled by an electric information signal
- B41C1/05—Heat-generating engraving heads, e.g. laser beam, electron beam
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M1/00—Inking and printing with a printer's forme
- B41M1/26—Printing on other surfaces than ordinary paper
- B41M1/30—Printing on other surfaces than ordinary paper on organic plastics, horn or similar materials
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
- B41M7/00—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock
- B41M7/0027—After-treatment of prints, e.g. heating, irradiating, setting of the ink, protection of the printed stock using protective coatings or layers by lamination or by fusion of the coatings or layers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/0202—Portable telephone sets, e.g. cordless phones, mobile phones or bar type handsets
- H04M1/0279—Improving the user comfort or ergonomics
- H04M1/0283—Improving the user comfort or ergonomics for providing a decorative aspect, e.g. customization of casings, exchangeable faceplate
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/02—Constructional features of telephone sets
- H04M1/18—Telephone sets specially adapted for use in ships, mines, or other places exposed to adverse environment
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Plasma & Fusion (AREA)
- Manufacturing & Machinery (AREA)
- Laser Beam Processing (AREA)
- Injection Moulding Of Plastics Or The Like (AREA)
Abstract
The invention provides a mobile phone shell pattern anti-interference printing process and a mobile phone shell. The invention provides a mobile phone shell pattern anti-interference printing process, which comprises the following steps: (1) Designing an image file to be engraved by using image processing software; (2) Adjusting the resolution of the dot matrix image in the step (1) to obtain a first screening file; (3) And (3) adjusting the dot spacing of the dots in the first screening file in the step (2) to generate a second screening file and the like. The surface of the mobile phone shell produced by the technical scheme of the invention forms a continuous non-interference ripple image, and has good aesthetic property. The vacuum aluminum-plated film compounded with the vacuum aluminum-plated film on the surface of the plastic film has a good optical reflection effect, light rays are subjected to diffuse reflection after reaching the surface of the vacuum aluminum-plated film through the pigment layer of the plastic film, gorgeous metal luster is endowed to the surface of the mobile phone shell, and the attractiveness of the mobile phone shell is further improved.
Description
Technical Field
The invention relates to the technical field of printing of mobile phone shells, in particular to an anti-interference printing process for patterns of a mobile phone shell and the mobile phone shell.
Background
The mobile phone shell can protect the mobile phone, has the functions of falling prevention, scraping prevention, water prevention and shock prevention, has important influence on the attractiveness of the mobile phone, and adopts the combination of intaglio printing and in-mold injection molding process to transfer patterns to the surface of a printing material so as to print patterns of various types on the surface of the mobile phone shell in the surface printing process of the existing mobile phone shell. However, in the gravure plate making process, the arrangement mode of the dots of the gravure roller is easy to interfere to generate moire fringes, so that the final effect of the pattern is influenced.
Disclosure of Invention
The invention mainly aims to provide an anti-interference printing process for patterns of a mobile phone shell and the mobile phone shell, and aims to solve the problem that Moire fringes are easy to appear in the printing process of the mobile phone shell to influence the attractive appearance of the patterns on the surface of the mobile phone shell.
In order to achieve the above object, the present invention provides an anti-interference printing process for patterns on a mobile phone shell, comprising the following steps:
(1) Designing an image file to be engraved by using image processing software, and sending the image file to an RIP (raster image processor) to generate a dot matrix image;
(2) Adjusting the resolution of the dot matrix image in the step (1), and adjusting the size of dots in the dot matrix image in proportion to obtain a first screening file;
(3) Adjusting the dot spacing of dots in the first screening file in the step (2) to generate a second screening file, and then performing staggered superposition on the first screening file and the second screening file obtained in the step (2) to obtain a third screening file;
(4) Installing the gravure roller in a laser direct engraving machine, performing laser exposure engraving on the surface of the gravure roller according to the dot arrangement rule in the third screening file in the step (3), and performing surface treatment to obtain the gravure roller with image-text information on the surface;
(5) Selecting a specified color, printing the pattern on the gravure roller obtained in the step (4) on a plastic film, and attaching a layer of vacuum aluminum-plated film to the surface of one side of the printed plastic film to form a composite film;
(6) And (6) attaching the composite film in the step (5) to the surface of the mobile phone shell by adopting an in-film injection molding process.
Preferably, the format of the image file to be engraved in step (1) is PS format.
Preferably, the adjustment mode of the dot spacing in the step (3) is adjusted according to the dot area of the adjacent dots.
Preferably, the adjusting manner of the midpoint spacing in step (3) includes: and increasing or decreasing the dot spacing of the dots in the first screening file according to the dot area ratio of the adjacent dots.
Preferably, when the second screened file is superimposed on the first screened file, a first dot of the first screened file is located at a dot pitch position of the second screened file.
Preferably, the plastic film in step (5) is made of: any one of polyethylene terephthalate, polypropylene and polyethylene.
Preferably, the injection molding temperature in the step (6) is 60 DEG o C～120 o C。
Preferably, the material of the mobile phone shell in the step (6) is polyethylene terephthalate.
In order to achieve the purpose, the invention also provides a mobile phone shell which is prepared by the mobile phone shell pattern interference-prevention printing process.
According to the technical scheme, the original file to be engraved is subjected to RIP processing to generate an adjustable dot matrix image, the dot matrix image is subjected to amplitude modulation processing, dot pitch processing and screening processing in sequence to change the distribution and arrangement mode of the strip-width dots, and the dots are subjected to destructive interference with the stripes on the surface of the vacuum aluminizer in the printing process due to irregular arrangement of the dots, so that a continuous interference-free ripple image is formed on the mobile phone shell, and the attractiveness of the mobile phone shell is improved. The vacuum aluminum-plated film is compounded on the surface of the plastic film and used as a substrate to be attached to the surface of the mobile phone shell, the vacuum aluminum-plated film has a good optical reflection effect, light rays are subjected to diffuse reflection after reaching the surface of the vacuum aluminum-plated film through the pigment layer of the plastic film, gorgeous metal luster is given to the surface of the mobile phone shell, and the attractiveness of the mobile phone shell is further improved. The laser direct engraving technology is adopted to engrave the intaglio roller, so that the engraving precision is high, and the surface smoothness of the intaglio roller is not influenced. And the process for attaching the pattern to the surface of the mobile phone shell through the in-mold injection molding process is simple, the printing precision is high, and the mobile phone shell with the printing stock is not damaged.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.
Example 1
An anti-interference printing process for patterns of a mobile phone shell comprises the following steps:
(1) Designing an image file to be engraved by using image processing software, and sending the image file to an RIP (raster image processor) to generate a dot matrix image;
(2) Adjusting the resolution of the dot matrix image in the step (1), and adjusting the size of dots in the dot matrix image in proportion to obtain a first screening file;
(3) Adjusting the dot spacing of dots in the first screening file in the step (2) to generate a second screening file, and then performing staggered superposition on the first screening file and the second screening file obtained in the step (2) to obtain a third screening file;
(4) Installing the gravure roller in a laser direct engraving machine, performing laser exposure engraving on the surface of the gravure roller according to the dot arrangement rule in the third screening file in the step (3), and performing surface treatment to obtain the gravure roller with image-text information on the surface;
(5) Selecting a specified color, printing the pattern on the gravure roller obtained in the step (4) on a plastic film, and attaching a layer of vacuum aluminum-plated film to the surface of one side of the printed plastic film to form a composite film;
(6) And (5) attaching the composite film in the step (5) to the surface of the mobile phone shell by adopting an in-film injection molding process.
And (2) the format of the image file to be engraved in the step (1) is a PS format.
And (4) adjusting the midpoint interval in the step (3) according to the area of the mesh points of the adjacent mesh points.
The adjustment mode of the midpoint distance in the step (3) comprises the following steps: and reducing the dot spacing of the dots in the first screening file according to the dot area ratio of the adjacent dots.
And (4) when the second screened file is superposed with the first screened file in the step (3), a first mesh point of the first screened file is positioned at the position of the distance between the dots of the second screened file.
The plastic film in the step (5) is made of the following materials: any one of polyethylene terephthalate, polypropylene and polyethylene.
The injection temperature in the step (6) was 60 ℃ o C～120 o C。
And (5) the material of the mobile phone shell in the step (6) is polyethylene terephthalate.
Example 2
An anti-interference printing process for patterns of a mobile phone shell comprises the following steps:
(1) Designing an image file to be engraved by using image processing software, and sending the image file to an RIP (raster image processor) to generate a dot matrix image;
(2) Adjusting the resolution of the dot matrix image in the step (1), and adjusting the size of dots in the dot matrix image in proportion to obtain a first screening file;
(3) Adjusting the dot spacing of dots in the first screening file in the step (2) to generate a second screening file, and then performing staggered superposition on the first screening file and the second screening file obtained in the step (2) to obtain a third screening file;
(4) Installing the gravure roller in a laser direct engraving machine, performing laser exposure engraving on the surface of the gravure roller according to the dot arrangement rule in the third screening file in the step (3), and performing surface treatment to obtain the gravure roller with image-text information on the surface;
(5) Selecting a specified color, printing the pattern on the gravure roller obtained in the step (4) on a plastic film, and attaching a layer of vacuum aluminum-plated film to the surface of one side of the printed plastic film to form a composite film;
(6) And (5) attaching the composite film in the step (5) to the surface of the mobile phone shell by adopting an in-film injection molding process.
And (2) the format of the image file to be engraved in the step (1) is a PS format.
And (4) adjusting the midpoint spacing in the step (3) according to the area of the dots of the adjacent dots.
The adjustment mode of the midpoint distance in the step (3) comprises the following steps: and increasing the dot spacing of the dots in the first screening file according to the dot area ratio of the adjacent dots.
And (4) when the second screened file is superposed with the first screened file in the step (3), the first mesh point of the first screened file is positioned at the position of the dot spacing of the second screened file.
The plastic film in the step (5) is made of the following materials: any one of polyethylene terephthalate, polypropylene and polyethylene.
The injection temperature in the step (6) was 60 ℃ o C～120 o C。
And (5) the material of the mobile phone shell in the step (6) is polyethylene terephthalate.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications, equivalents and applications made by the present invention in the spirit of the present invention or other related fields are included in the scope of the present invention.
Claims (6)
1. The anti-interference printing process for the patterns of the mobile phone shell is characterized by comprising the following steps of:
(1) Designing an image file to be engraved by using image processing software, and sending the image file to an RIP (raster image processor) to generate a dot matrix image;
(2) Adjusting the resolution of the dot matrix image in the step (1), and adjusting the size of dots in the dot matrix image in proportion to obtain a first screening file;
(3) Adjusting the dot spacing of dots in the first screening file in the step (2) to generate a second screening file, and then performing staggered superposition on the first screening file and the second screening file obtained in the step (2) to obtain a third screening file, wherein the adjustment mode of the dot spacing is to adjust according to the dot area of adjacent dots, and specifically comprises the following steps: increasing the dot spacing of the dots in the first screened file according to the dot area ratio of the adjacent dots or decreasing the dot spacing of the dots in the first screened file according to the dot area ratio of the adjacent dots, wherein when the second screened file is superposed with the first screened file, the dots of the first screened file are located at the dot spacing position of the second screened file;
(4) Installing the gravure roller in a laser direct engraving machine, performing laser exposure engraving on the surface of the gravure roller according to the dot arrangement rule in the third screening file in the step (3), and performing surface treatment to obtain the gravure roller with image-text information on the surface;
(5) Selecting a specified color, printing the pattern on the gravure roller obtained in the step (4) on a plastic film, and attaching a layer of vacuum aluminum-plated film on one side surface of the printed plastic film to form a composite film;
(6) And (6) attaching one surface of the vacuum aluminizer of the composite film in the step (5) to the surface of the mobile phone shell by adopting an intramembrane injection molding process.
2. The anti-interference printing process for patterns on the shell of a mobile phone as claimed in claim 1, wherein the format of the image file to be engraved in step (1) is PS format.
3. The anti-interference printing process of patterns on the shell of the mobile phone as claimed in claim 1, wherein the plastic film in step (5) is made of:
any one of polyethylene terephthalate, polypropylene and polyethylene.
4. The anti-interference printing process for patterns on the shell of a mobile phone as claimed in claim 1, wherein the injection temperature in the step (6) is 60 ℃ o C～120 o C。
5. The anti-interference printing process of the mobile phone shell pattern as claimed in claim 1, wherein the material of the mobile phone shell in the step (6) is polyethylene terephthalate.
6. A mobile phone shell, characterized in that the mobile phone shell is prepared by the anti-interference printing process of the mobile phone shell pattern of any one of claims 1 to 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010401019.2A CN111421975B (en) | 2020-05-13 | 2020-05-13 | Anti-interference printing process for patterns of mobile phone shell and mobile phone shell |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010401019.2A CN111421975B (en) | 2020-05-13 | 2020-05-13 | Anti-interference printing process for patterns of mobile phone shell and mobile phone shell |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111421975A CN111421975A (en) | 2020-07-17 |
| CN111421975B true CN111421975B (en) | 2022-10-11 |
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Family Cites Families (13)
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| DE2520646A1 (en) * | 1975-05-09 | 1976-11-18 | Agfa Gevaert Ag | Superimposition of three dot screens with three primary colours - for recording images line by line and reducing moire effect |
| JP2001096999A (en) * | 1999-10-01 | 2001-04-10 | Toppan Printing Co Ltd | Method for preventing forgery of ovd forming sheet, ovd forming sheet having forgery prevention applied and ovd seal using the ovd forming sheet |
| JP2003182048A (en) * | 2001-12-21 | 2003-07-03 | Sii Printek Inc | Inkjet recorder and printing method |
| WO2006090786A1 (en) * | 2005-02-23 | 2006-08-31 | Dainippon Ink And Chemicals, Inc. | Multilayer sheet for thermal forming, formed body, injection molded body and method for producing same |
| KR20100044806A (en) * | 2007-07-11 | 2010-04-30 | 키모토 컴파니 리미티드 | Resin molded article using film for insert molding |
| JP5465887B2 (en) * | 2009-02-04 | 2014-04-09 | 寿精版印刷株式会社 | Decorative material |
| CN101863193B (en) * | 2010-03-16 | 2012-11-14 | 中国人民银行印制科学技术研究所 | Printed anti-counterfeiting pattern, method for manufacturing same and anti-counterfeiting product with same |
| CN101954804B (en) * | 2010-08-03 | 2012-03-14 | 浙江华人数码印刷有限公司 | Frequency conversion screening anti-counterfeiting printing process |
| US20130022789A1 (en) * | 2010-08-05 | 2013-01-24 | Tatsuo Shigeta | Gravure printing plate and method for producing gravure printing plate |
| CN105034545B (en) * | 2015-09-11 | 2017-10-20 | 上海紫恩数码科技有限公司 | A kind of method for platemaking for the multiple screening for improving printing quality |
| CN205812163U (en) * | 2016-05-27 | 2016-12-14 | 深圳市锐影医疗科技发展有限公司 | A kind of printing net-point structure |
| CN108803251B (en) * | 2018-06-15 | 2020-11-24 | 黄山精工凹印制版有限公司 | Plate making method of gravure plate roller |
| TWI671179B (en) * | 2018-07-31 | 2019-09-11 | 金亞典科技有限公司 | Composite layer structure, decorated molding article and method for fabricating decorated molding article |
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| CN111421975A (en) | 2020-07-17 |
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Effective date of registration: 20230411 Address after: Room 201, 2nd Floor, No. 1100007 Nanyue Industrial Zone, Niuhu Community, Guanlan Street, Longhua District, Shenzhen City, Guangdong Province, 518110 Patentee after: SHENZHEN MEGIX TECHNOLOGY Co.,Ltd. Address before: 362000 no.658, Songzhu Road, zhushuxia community, Meiling street, Jinjiang City, Quanzhou City, Fujian Province Patentee before: Quanzhou taoji Plastic Co.,Ltd. |