CN1052193C - Offset plate material used in laser printing machine for direct plate-making and the preparation method thereof - Google Patents
Offset plate material used in laser printing machine for direct plate-making and the preparation method thereof Download PDFInfo
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- CN1052193C CN1052193C CN94116973A CN94116973A CN1052193C CN 1052193 C CN1052193 C CN 1052193C CN 94116973 A CN94116973 A CN 94116973A CN 94116973 A CN94116973 A CN 94116973A CN 1052193 C CN1052193 C CN 1052193C
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- coating
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- offset plate
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Abstract
The present invention relates to an offset plate used for direct printmaking of a laser printer and a preparation method thereof. The offset plate has a double-layer structure with a basal body layer and a figure receiving and fixing layer, wherein the basal body layer is a modified rubber sheet; the figure receiving and fixing layer is obtained through one-step coating and one-step film forming on the basal layer by special paint; the rubber sheet is treated by coronal discharge plasma in an atmospheric pressure state; then, the special paint is coated for film forming. The offset plate of the present invention can be used for the direct printmaking of the laser printer, and can also be used for the direct printmaking by a duplicator, presensitized plate lubricating liquid can be used during the printing, and clear water can also be singly used as the plate lubricating liquid. The printing resistance reaches 10000 to 15000 printing times.
Description
The present invention relates to a kind of offset plate material that is used for laser printing machine for direct plate-making and preparation method thereof.
The plate that present most offset press is used is PS version or zinc oxide printing plate, and its mask-making technology is as follows in proper order respectively: zinc oxide printing plate is: 1. go out pattern with laser printer, and 2. layout, 3. static plate-making, 4. colour-separation drafting, 6. 5. roasting version goes out forme; 1. the PS version for going out the positive film with laser printer or laser photocomposing machine, 2. develop, photographic fixing, and 3. layout, 5. 4. printing down develops, photographic fixing, 6. goes out forme; Can go up the printing of printing machine extension version after going out forme.Its common drawback is that technological process is long, and equipment is many, and investment is big.
And directly forme is an important topic of contemporary print field.Japan Patent JP-A-60181457, JP-A-61148097 and Chinese patent CN1062694A (application number 921002858) disclose this plate and preparation method, but its scheme is three-decker: have support 1, image fixed bed 2.(in the middle of being positioned at), image receiving layer 3.With regard to pressrun, even higher Chinese patent also has only 2000～5000 seals among the three.
The purpose of this invention is to provide a kind of offset plate material that is used for laser printing machine for direct plate-making with double-layer structure, be about to the good picture and text of Computerized Editing, be printed directly on this version by laser printer, promptly become forme, directly go up printing machine and hang the version printing, thereby shorten mask-making technology greatly, reduce investment, and have high pressrun.
The concrete scheme of the present invention is as follows: directly forme has double-layer structure, and one deck is a base layer, is the mylar through plasma treatment, and another layer is accepted fixed bed for picture and text, is that one-pass film-forming obtains with the once coating on base layer of a kind of special coating.
Mylar is the former polyester film of commercial 70～100 μ, have high temperature resistant, indeformable characteristics in the printing.Preparation technology's method of the present invention is: adopt corona discharge plasma to handle polyester film base under atmospheric normal pressure condition, discharge gap voltage is 10～25 kilovolts, the plasma electrically source frequency is 10～35 KHzs, and in 4～10 seconds processing times, mylar at the uniform velocity passes through plasma slab; Then, the surface is the coating special coating evenly, and coating weight is 100～200g/m
2(wet basis) got product 130 ℃～150 ℃ dry down processing afterwards in 4～5 minutes; The special coating weight percentage is: titanium dioxide 8～9%, polyvinyl alcohol 4～6%, potassium chromium sulfate 0.2～0.4%, polycarboxylate 0.4～0.6%, trimethylol melamine 0.6～0.8%, hydrochloric acid 0.4～0.6%, water 83～86%.
Through the film that the corona plasma modification is handled, surface physics, chemical constitution and performance change, and surface active can increase, and coating can be adhered on it securely.
The invention has the advantages that: picture and text are accepted fixed bed adhesion-tight on base layer, have extremely strong hydrophilic, water holding capacity, and water insoluble; When being used for laser printing machine for direct plate-making, the powdered carbon adhesion-tight does not come off in the printing, and picture and text reproduce.Have only double-layer structure, preparation technology is easy; Not only can be used for laser printing machine for direct plate-making, also can directly make a plate with duplicator; The only road of tool part is a not only available PS version fountain solution in the printing in addition, and can only do fountain solution with clear water; The version that makes simultaneously is repeatedly reusable; Can cooperate with adhesive specially and be used for big offset press; The available dedicated retouching paste carries out colour-separation drafting; Pressrun can reach 10000～15000 seals.Embodiment: mylar thickness 80～90 μ.Under atmospheric normal pressure condition, adopt corona discharge plasma to handle, condition is as shown in the table:
Mylar after above-mentioned three kinds of processing respectively with as the listed two kinds of coating of following table, and process conditions coatings handle:
Finished product all can be used as the laser printing machine for direct plate-making offset plate material, and its pressrun is all at 10000～15000 seals.Coating is raw materials used to be commercial product.The titanium dioxide particle diameter is less than 30 μ.
| Discharge gap voltage (kilovolt) | Supply frequency (KHz) | Processing time (second) | |
| One | 18～20 | 10～12 | 8 |
| Two | 14～15 | 15～16 | 7 |
| Three | 10～12 | 20～21 | 6 |
Claims (2)
1. offset plate material that is used for laser printing machine for direct plate-making, has double-layer structure, one deck is a base layer, one deck is that picture and text are accepted fixed bed, it is characterized in that: base layer is the mylar through plasma treatment, picture and text are accepted fixed bed and are obtained with a kind of special coating once coating, one-pass film-forming on base layer, and this special coating is made up of following material: titanium dioxide, polyvinyl alcohol, potassium chromium sulfate, polycarboxylate, trimethylol melamine, hydrochloric acid and water.
2. method for preparing the described product of claim 1, it is characterized in that: under atmospheric normal pressure condition, the employing corona discharge plasma is handled, discharge gap voltage is 10～25 kilovolts, and the plasma electrically source frequency is 10～35 KHzs, 4～10 seconds processing times, mylar at the uniform velocity passes through plasma slab, then, the surface is the coating special coating evenly, and coating weight is 100～200g/m
2(wet basis) 130 ℃～150 ℃ dry down processing 4～5 minutes, gets product afterwards; The special coating weight percentage is: titanium dioxide 8～9%, polyvinyl alcohol 4～6%, potassium chromium sulfate 0.2～0.4%, polycarboxylate 0.4～0.6%, trimethylol melamine 0.6～0.8%, hydrochloric acid 0.4～0.6%, water 83～86%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94116973A CN1052193C (en) | 1994-10-20 | 1994-10-20 | Offset plate material used in laser printing machine for direct plate-making and the preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94116973A CN1052193C (en) | 1994-10-20 | 1994-10-20 | Offset plate material used in laser printing machine for direct plate-making and the preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1133241A CN1133241A (en) | 1996-10-16 |
| CN1052193C true CN1052193C (en) | 2000-05-10 |
Family
ID=5038193
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94116973A Expired - Fee Related CN1052193C (en) | 1994-10-20 | 1994-10-20 | Offset plate material used in laser printing machine for direct plate-making and the preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1052193C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448669C (en) * | 2003-07-08 | 2009-01-07 | 伊斯曼柯达公司 | Imageable element comprising sulfated polymers |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103448349B (en) * | 2013-07-31 | 2015-12-23 | 陕西科技大学 | 3D is utilized to print the method for carrying out making a plate |
| CN104972777A (en) * | 2014-04-10 | 2015-10-14 | 黄震山 | Medical color film with PPES as base material and production method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61148097A (en) * | 1984-12-21 | 1986-07-05 | Mitsubishi Paper Mills Ltd | Direct drawing type offset printing plate blank |
| CN1062694A (en) * | 1992-01-18 | 1992-07-15 | 中国印刷科学技术研究所 | Laser printer direct imaging offset printign plate material |
-
1994
- 1994-10-20 CN CN94116973A patent/CN1052193C/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61148097A (en) * | 1984-12-21 | 1986-07-05 | Mitsubishi Paper Mills Ltd | Direct drawing type offset printing plate blank |
| CN1062694A (en) * | 1992-01-18 | 1992-07-15 | 中国印刷科学技术研究所 | Laser printer direct imaging offset printign plate material |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100448669C (en) * | 2003-07-08 | 2009-01-07 | 伊斯曼柯达公司 | Imageable element comprising sulfated polymers |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1133241A (en) | 1996-10-16 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |