Application:

RP-7 circuit board light printing film is designed for circuit board production self-developed by Lucky Huaguang Graphics Co.,Ltd. It is suitable for Helium Neon laser or red laser plotter with light sources of 630~670nm. It has the following characteristics: good dimensional stability, moderate sensitivity, strong developing adaptability, good line reproduction, suitable for rapid process at high temperature.

Main features:

● Use polyester film base with thickness of 7mil (0.175mm) and good dimensional stability.

● High contrast, high resolution, little bottom ash, high density.

● Good line reproduction, high resolution.

● Excellent anti-static and anti-dust technology.

● It is suitable for rapid process at high temperature, the fastest developing time can be up to about 25 seconds.

● Loading in dark room.

Exposure：

Exposure is determined by photoplotter characteristics and developing processing conditions. The best exposure must be based on different types of photoplotters through different exposure tests to obtain. Simultaneously the development time and the temperature also have a great influence on the quality of the image. Therefore, adjusting the exposure of photoplotter as well as tuning the developing temperature and time appropriately can ensure high quality images obtained under the specific exposure conditions.

RP-7 light printing film can easily obtain high quality image under the conditions of weak exposure and strong developing.

Film should be washed as soon as possible after exposure.

Processing：

Huaguang chemicals HG-681/881 are recommended, other similar developing chemicals like Kechang、Keyi、Kodak are also available.

Developing condition are recommended as follows :( The developing time can be appropriately adjusted according to the maximum density requirement)

The best drying temperature of the film is 40 ~ 50 ℃. It will appear problems such as bottom ash density increase and size change when the temperature more than 50 ℃.

Note: Use recycled water when washing to avoid the film turning yellow after long placed if it does not wash completely.

Specification(inch)：

Bulk package(sheets)

24×28×50 24×30×50

24×26×50 16×20×50

12×18×50 16×20×50

26×26×50 20×26×50

22×26×50 22×28×50

20×24×50 24×30×50

Roll package

0.508*36

0.6*36

0.635*36

0.838*36

0.924*36

1.12*36

1.2*36

1.32*36

Other sizes are also available as required.

Package:

Bulk package.

Roll package.

Unpacking and Safe light：

The film should be unpacked and handled in complete darkness or under dark green light. The film should not less than 1.5 meters from the safelight and avoid direct light. Be careful when operating in order to prevent film damaged from friction, folding, oil and fingerprint, etc.

Storage：

Store the film in a cool and dry place. Storage temperature is lower than 20°C and RH less than 65%.

Too warm or too humid will shorten the film’s shelf life and increase the film’s shrinkage rate.

Avoid erosion by radioactive or other harmful substances.

Guarantee Period：

18 months

Executive Standard：

HG/T2172-2003