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| Product Name: |
phoenix negative ps plate
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| Supply Ability: |
3000000/year |
| Related proudcts |
printing plate, offset printing plat, |
| Specifications |
high quality with competitive price ,short exposal time |
| Price Term: |
CIF |
| Port of loading: |
Shanghai/Guangzhou |
| Minimum Order |
5000 |
| Unit Price: |
2.53usd/sqm |
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1. Printing down(Exposure):
Negative ps plate�exposure is finished by negative film jointing nearly with sensitive plate, spectrum range is between blue ray and ultraviolet ray (320-450nm), while exposing, the iodine gallium lamp is the most proper lamp-house and around 150mJ/c
(2) Remark:
In order to reach the most pressrun, the exposure quantum must be enough;
In order to prevent halftone (net dot) being scale-up, the exposure quantum can’t be added or decreased optionally. Avoid the tone value, transferred from film with halftone to printing plate, increasing excessively and decreasing excessively so that the thin part of the dark area disappearing; the tone value must be controlled in the permitted range.
(4) Before using our plate to print, please operate it under the yellow safe light to prevent exposing before printing for fear it influences quality.
2. Develop
Kodak -956 developer and our co***ny’s negative developer are strongly recommended.
Develop temperature: 25±2°C
Developer’s dilution ratio: 1:2 for Kodak -956 developer (developer: water);
Developer’s dilution ratio: 1: 1.5 for our co***ny’s negative developer (developer: water).
Develop time: 30-60 seconds.
Manual develop: must scrub, wash off remnant developer on the surface of plate.
Automatic develop: develop machine must be equipped with brush to reinforce developing efficiency.
Introduction:
(1) Because the developer from different area is of diversity, some of negative plate will appear shallow yellow on the surface after developing, with the plate substrate being using, the shallow yellow will disappear automatically, it won’t influence printing effect (Kodak -956 developer has no such problem).
(2) In order to solve the problem, you can expose the developed plate once again, that will not only eliminate the shallow yellow but also enhance pressrun.
3. Correction:
In order to wipe off the excrescent image and stain, you can lay right quantity negative remover on the surface of image or st |
| Company: |
anhui phoenix plate technology co.,ltd
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| Contact: |
Ms. emma zheng |
| Address: |
hongyingtao industrial zone |
| Postcode: |
231135 |
| Tel: |
+86 0551 6331111 |
| Fax: |
+86 0551 6333700 |
| E-mail: |
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