CN110202972A - A kind of lithographic printing pre-coating light sensitive plate or sensible heat version and its preparation method and application - Google Patents
A kind of lithographic printing pre-coating light sensitive plate or sensible heat version and its preparation method and application Download PDFInfo
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- CN110202972A CN110202972A CN201910562705.5A CN201910562705A CN110202972A CN 110202972 A CN110202972 A CN 110202972A CN 201910562705 A CN201910562705 A CN 201910562705A CN 110202972 A CN110202972 A CN 110202972A
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- Prior art keywords
- sensible heat
- light sensitive
- version
- printing
- plate
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41N—PRINTING PLATES OR FOILS; MATERIALS FOR SURFACES USED IN PRINTING MACHINES FOR PRINTING, INKING, DAMPING, OR THE LIKE; PREPARING SUCH SURFACES FOR USE AND CONSERVING THEM
- B41N1/00—Printing plates or foils; Materials therefor
- B41N1/04—Printing plates or foils; Materials therefor metallic
- B41N1/08—Printing plates or foils; Materials therefor metallic for lithographic printing
- B41N1/083—Printing plates or foils; Materials therefor metallic for lithographic printing made of aluminium or aluminium alloys or having such surface layers
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- Printing Plates And Materials Therefor (AREA)
Abstract
The invention discloses a kind of lithographic printing pre-coating light sensitive plate or sensible heat version, the surface of the pre-coating light sensitive plate or sensible heat version has groove (4), and groove (4) inner surface is concave curved surface.Also disclose the preparation method of pre-coating light sensitive plate or sensible heat version and the purposes in printing process for enhancing printing plate water storage performance, avoiding printing plate scumming, improve printing plate press resistance rate.The present invention changes the shape and profile of plate surface, increases the specific surface area of plate, so that plate moisture storage capacity increases, hydrophily enhancing can prevent ink from corroding printing plate, to reduce printing trouble in printing process.Compared to the lesser cone tank of angle, printing plate easy to clean effectively prevent ink particle intrusion printing plate bottom groove (4) in printing process, and then the problems such as cause printing plate scumming, while improving printing plate press resistance rate.
Description
Technical field
The invention belongs to lithographic arts, in particular to a kind of lithographic printing pre-coating light sensitive plate or sensible heat version and its
Preparation method and purposes.
Background technique
In lithographic printing, printing plate is one of essential auxiliary material.The plate that existing offset press uses is commonly
Pre- coated version is divided into the precoating sensible heat of " photo-polymerization type ", the pre-coating light sensitive plate of " photolysis type " and " hot polymerization mould assembly ", " heat decomposition type "
Version.Wherein, " photo-polymerization type " and " hot polymerization mould assembly " uses the printing down of negative image master, and " photolysis type " and " heat decomposition type " uses positive image master
Printing down.Pre-coating light sensitive plate or precoating sensible heat version are multilayered structure, generally by aluminum base, Grains layer, oxide layer, photosensitive layer or sense
Thermosphere is constituted, and finished product pre-coating light sensitive plate or precoating sensible heat version are printed on the machine after printing down-development-colour-separation drafting-gluing.
Traditional pre-coating light sensitive plate or precoating sensible heat version have to pass through electrolysis processing and generate Grains layer, which is uniformly thin
Close multiple Grains, is in honeycomb under electronic scanner microscope, and surface is the lesser cone tank of angle.It has the following deficiencies:
1, hydrophily and wearability can be with the increasings of printing in printing process for traditional pre-coating light sensitive plate or precoating sensible heat version
Add and gradually reduce, and then influence production efficiency, improves production cost.
2, in printing process, ink particle deposits in taper trench bottom, the problems such as being not easily cleaned, can cause printing plate scumming.
To solve the above-mentioned problems, the present invention is proposed.
Summary of the invention
The present invention provides a kind of lithographic printing pre-coating light sensitive plate or sensible heat version, the surface of the pre-coating light sensitive plate or sensible heat version
With multiple grooves (4), groove (4) inner surface is concave curved surface.
Wherein, the cross section of the concave curved surface is concave curve.The concave curve is smooth.It is described it is smooth mathematically
It is meant that first derivative is continuous.
In contrast, the cone tank inner surface on the surface of Grains layer is not concave curved surface in the prior art, i.e., its cross section is not
It is concave curve but V-type broken line or irregular broken line.Mathematically its first derivative is not continuous to broken line.
Preferably, the opening width of the groove (4) is 0.12-150 μm, and groove (4) depth is 0.1-0.5 μm.
Wherein the number of the groove can be 103-109A/cm2, preferably 105-108A/cm2, more preferable 106-108A/
cm2.
Preferably, the cross section of the concave curved surface is fillet trapezoid, U-shaped, semicircle or arc.
Preferably, the pre-coating light sensitive plate includes version base (1), hydrophilic layer (2), photosensitive layer (3) or heat sensing layer (3).
Preferably, the hydrophilic layer (2) is the oxide of version base (1) material.
Preferably, the version base (1) is aluminum substrate, and the hydrophilic layer (2) is alumina layer or other water wetted materials, institute
Stating photosensitive layer (3) is photosensitive layer, and the heat sensing layer (3) is sensible heat glue-line.
Preferably, the hydrophilic layer (2) can be the oxide of version base (1) material, or other water wetted materials.
Second aspect of the present invention provides the preparation method of a kind of lithographic printing pre-coating light sensitive plate or sensible heat version: aluminium sheet is carried out
Surface treatment obtains multiple grooves (4) that inner surface is concave curved surface, is then aoxidized, is coated with photoresists or sensible heat glue, drying,
Obtain the pre-coating light sensitive plate or sensible heat version.
Preferably, version base (1) material is aluminium.
Preferably, the cross section of the concave curved surface is concave curve.
Preferably, the opening width of the groove (4) is 0.12-150 μm, and groove (4) depth is 0.1-0.5 μm.
Preferably, the cross section of the concave curved surface is fillet trapezoid, U-shaped, semicircle or arc.
Third aspect present invention provides pre-coating light sensitive plate described in first aspect or sensible heat version in printing process for increasing
Strong printing plate water storage performance avoids printing plate scumming and/or improves the purposes of printing plate press resistance rate.
The invention has the following advantages:
1, the surface of pre-coating light sensitive plate or sensible heat version setting upper inner surface is the groove of concave curved surface by the present invention, changes version
The shape and profile on material surface, increase the specific surface area of plate, so that plate moisture storage capacity increases, hydrophily enhancing is being printed
It can prevent ink from corroding printing plate in the process, to reduce printing trouble.
2, the inner surface that the present invention is arranged is the groove of concave curved surface, and compared to the lesser cone tank of angle, ink particle is not
It is easily deposited in bottom portion of groove, printing plate easy to clean effectively prevent ink particle in printing process to invade printing plate bottom groove, in turn
The problems such as causing printing plate scumming, while improving printing plate press resistance rate.
Detailed description of the invention
Fig. 1 is a kind of lithographic printing pre-coating light sensitive plate of the present invention or sensible heat plate structure schematic diagram.
Fig. 2 is a kind of existing lithographic printing pre-coating light sensitive plate or sensible heat plate structure schematic diagram.
Dotted portion is magnified partial view in two figures.
Reference signs list:
1. version base；2. hydrophilic layer；3. photosensitive layer or heat sensing layer；4. groove, 5- Grains layer.
Specific embodiment
The contents of the present invention are further illustrated below by specific embodiment.
Embodiment 1
It using the common aluminum substrate (1) of 0.27mm thickness, is surface-treated, is controlled surface groove (4) after oil removing, cleaning
Shape inner surface is concave curved surface, and the cross section of the concave curved surface is arc, and the opening width of the groove (4) is 0.6 μm, described
Groove (4) depth is 0.3 μm, is then aoxidized, gluing, drying, upper Heidelberg CD102-4 printing machine test after printing down.Print
Brush test result are as follows: the PS editions is 70 from combined pressure to printing off qualified printing and averagely putting paper number, and 40 points are shut down when print is to 5000
Not upper dirty, the press resistance rate 6.5 ten thousand of clock.
Comparative example 1
Using the common aluminum substrate (1) of 0.27mm thickness, it is roughened after oil removing, cleaning, is to be situated between with dilute hydrochloric acid and phosphoric acid
Matter is electrolysed processing three times and forms Grains layer, then aoxidized, gluing, drying, upper Heidelberg CD102-4 printing after printing down
Machine test.Print test result are as follows: the PS edition is 85 from combined pressure to printing off qualified printing and averagely putting paper number, when printing to 5000
Shut down 25 minutes not upper dirty, press resistance rates 60,000.
The above description is merely a specific embodiment, but scope of protection of the present invention is not limited thereto, any
Those familiar with the art in the technical scope disclosed by the present invention, can easily think of the change or the replacement, and should all contain
Lid is within protection scope of the present invention.Therefore, protection scope of the present invention should be subject to the protection scope in claims.
Claims (10)
1. a kind of lithographic printing pre-coating light sensitive plate or sensible heat version, which is characterized in that the surface of the pre-coating light sensitive plate or sensible heat version
With multiple grooves (4), groove (4) inner surface is concave curved surface.
2. pre-coating light sensitive plate according to claim 1 or sensible heat version, which is characterized in that preferably, groove (4) are opened
Mouth width degree is 0.12-150 μm, and groove (4) depth is 0.1-0.5 μm.
3. pre-coating light sensitive plate according to claim 1 or sensible heat version, which is characterized in that the cross section of the concave curved surface is circle
Angle is trapezoidal, U-shaped, semicircle or arc.
4. pre-coating light sensitive plate according to claim 1 or sensible heat version, which is characterized in that the pre-coating light sensitive plate or sensible heat version
Including version base (1), hydrophilic layer (2), photosensitive layer (3) or heat sensing layer (3).
5. pre-coating light sensitive plate according to claim 4 or sensible heat version, which is characterized in that the hydrophilic layer (2) is version base (1)
The oxide of material.
6. the preparation method of a kind of lithographic printing pre-coating light sensitive plate or sensible heat version, which is characterized in that carry out version base (1) at surface
Reason obtains multiple grooves (4) that inner surface is concave curved surface, is then aoxidized, is coated with photoresists or sensible heat glue, drying, obtains institute
State pre-coating light sensitive plate or sensible heat version.
7. preparation method according to claim 6, which is characterized in that version base (1) material is aluminium.
8. preparation method according to claim 6, which is characterized in that the opening width of the groove (4) is 0.12-150 μ
M, groove (4) depth are 0.1-0.5 μm.
9. preparation method according to claim 6, which is characterized in that the cross section of the concave curved surface is fillet trapezoid, U
Shape, semicircle or arc.
10. pre-coating light sensitive plate described in claim 1 or sensible heat version are in printing process for enhancing printing plate water storage performance, avoiding
Printing plate scumming and/or the purposes for improving printing plate press resistance rate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910562705.5A CN110202972A (en) | 2019-06-26 | 2019-06-26 | A kind of lithographic printing pre-coating light sensitive plate or sensible heat version and its preparation method and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910562705.5A CN110202972A (en) | 2019-06-26 | 2019-06-26 | A kind of lithographic printing pre-coating light sensitive plate or sensible heat version and its preparation method and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110202972A true CN110202972A (en) | 2019-09-06 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910562705.5A Pending CN110202972A (en) | 2019-06-26 | 2019-06-26 | A kind of lithographic printing pre-coating light sensitive plate or sensible heat version and its preparation method and application |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60203497A (en) * | 1984-03-28 | 1985-10-15 | Fuji Photo Film Co Ltd | Manufacture of aluminum base material for lithographic printing plate and aluminum substrate for lithographic printing plate |
| CN1320524A (en) * | 2000-03-28 | 2001-11-07 | 富士胶片株式会社 | Support for lithographic plate |
| CN1394171A (en) * | 2000-10-26 | 2003-01-29 | 富士胶片株式会社 | Supporting body for lithography block and original lithography block |
| CN1413838A (en) * | 2001-09-12 | 2003-04-30 | 富士胶片株式会社 | Support device for offset printing plate and offset printing plate raw sheet |
| CN201080040Y (en) * | 2007-09-13 | 2008-07-02 | 上海星信感光材料科技有限公司 | Positive map thermosensitive CTP plate |
| CN202029530U (en) * | 2011-04-02 | 2011-11-09 | 上海琪川感光设备有限公司 | CTcP photo-sensitive resist offset plate free of hole sealing |
-
2019
- 2019-06-26 CN CN201910562705.5A patent/CN110202972A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60203497A (en) * | 1984-03-28 | 1985-10-15 | Fuji Photo Film Co Ltd | Manufacture of aluminum base material for lithographic printing plate and aluminum substrate for lithographic printing plate |
| CN1320524A (en) * | 2000-03-28 | 2001-11-07 | 富士胶片株式会社 | Support for lithographic plate |
| CN1394171A (en) * | 2000-10-26 | 2003-01-29 | 富士胶片株式会社 | Supporting body for lithography block and original lithography block |
| CN1413838A (en) * | 2001-09-12 | 2003-04-30 | 富士胶片株式会社 | Support device for offset printing plate and offset printing plate raw sheet |
| CN201080040Y (en) * | 2007-09-13 | 2008-07-02 | 上海星信感光材料科技有限公司 | Positive map thermosensitive CTP plate |
| CN202029530U (en) * | 2011-04-02 | 2011-11-09 | 上海琪川感光设备有限公司 | CTcP photo-sensitive resist offset plate free of hole sealing |
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| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20190906 |
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| RJ01 | Rejection of invention patent application after publication |