1600 x 1200 Laser Photoplot Film

Large Format Laser Photoplot Film
Film Size 1600mm x 1200mm x 0.18mm
Image Size 1590mm x 1190mm

In stock
SKU
PLF_16x12
US$305.90

Maximum 100 characters

Maximum 1000 characters

This large format phototool is available in 4 different resolution - at either 5k dpi, 10k dpi, 15k dpi and 20k dpi. Ideally suited to higher resolution work such as Printed Circuit Boards and Antennas, the film achieves outstanding accuracy due to the fact that it is manufactured in one pass. 

BASE MATERIAL
All of our films are imaged onto Agfa Idealine film 0.18mm thick polyester film which has a photographic emulsion coated onto one side. These are specially manufactured for consistent high quality results. They are both imaged, and inspected, in controlled environments which is crucual to their dimensional stability. For the most accurate films possible, please use this films in an environment of 21 deg C and 50% humidity.

DATA FORMATS
We can accept various formats of data. Whilst Gerber remains the most common for the PCB and electronics Industries, we also have the ability to image from postscript, graphics files and Adobe Illustrator for our customers based more in the Graphics Industries. And, fo course, common CAD formats such as DXF, GDSii can also be manipulated. These data formats listed above are only a small section of what is available - please contact us for further information and clarification. We are also able to provide a full drafting service whereby we can create your designs from drawings and descriptions.

PRODUCTION SCHEDULE
Standard leadtimes from receipt of data to shipping are 48 hrs, but where orders are very urgent and prompt delivery is critical to a projects success - you can count on us to deliver by offering a sameday service - from receipt of order to shipping of films in the same production day ! The offer of this service is dependant on current production workloads and all orders must be complete and submitted by 10.00am.


INSPECTION

Standard :   We inspect the piece by eye for flaws, design inaccuracies and contaminations. 

Enhanced :   In addition to the standard inspection process described above, we will then document them via a Certificate of Conformance which we supply with the mask. Tolerances are per our standard tolerances. We will choose one measurement for length, and one for feature size.

Full Certificate :   By selecting this option during the ordering process, we will inspect upto 10 customer defined measurements, with customer supplied tolerances. You will need to send us a document, or a separate layer of the design, showing us where you want us to take the measurements from. There can be upto 10 positions defined by the customer. These dimensions are then programmed on the co-ordinate measuring system and the mask is compared to this unique program. A certificate of conformity is given if the mask passes the inspection process.

 

Please see the TECHNICAL sections, DOWNLOAD sections and FAQ for further information. If you still require clarification, pleas either email or click for LIVE SUPPORT.

FEATURE TOLERANCES

‘feature tolerance’, equates to one specific feature (also known as CD or Critical Dimension). So, if part of your mask design has a 120um channel and this is a critical feature, you can use the table below to work out possible deviations to the channel width, depending upon which resolution you choose. As a rule, the higher the resolution, then the more accurate the individual feature size will be.

 

Resolution

 

Material

Tolerance

4k dpi

polyester film

+/- 24um

10k dpi

polyester film

+/- 16um

16k dpi

polyester film

+/- 12um

20k dpi

polyester film

+/- 8um

                                All figures above in Microns....
                                

 

DIMENSIONAL TOLERANCES

Our photo-mask films are produced in conditions of 21deg C / 50% humidity, and if dimensional accuracy is a concern when using the polyester mask, then you must replicate these conditions in your own clean rooms and acclimatise the mask in these conditions for upto 8 hours before you intend to use it – only then can it be considered to be dimensionally accurate and stable. We strongly recommend using glass based substrates where dimensional stability is a concern.

NOTE: 

When using films in your own production environemnt, be aware that ....
1 Deg C temperature change = 18 ppm (1.8um per metre length)
1% Humidity change  = 9ppm (0.9um per metre)

                             

 

SPECIFICATION

Polyester Film is a typical substrate used in the photographic process, and forms the most common substrate in applications that involve general multiple exposures (such as PCBs, etching, printing etc.). Polyester is excellent due to its low-cost nature, but must be handled carefully and used in controlled environments if dimensional accuracy is required.

Films used for photo-masks have the following component layers:  a plastic base, a photosensitive emulsion layer (silver halide) and a backing layer.

This plastic base is polyester material, and has a thickness of 0.18 mm. The emulsion layer is composed of gelatine and silver halide and other chemicals, which adds another 0.005mm in total.

When we expose the film in the imager, the light energy from the laser interacts with the silver halide crystals suspended in the coated gelatine layers. Development, a chemical process, converts exposed silver halide grains into metallic silver. The next step in the chemical process is fixation. The fixer stops development and removes the unexposed silver halide grains in non-image areas. Finally, the film is washed/dried/cleaned and inspected.

The final result is a ‘black’ image coated on one side of the polyester base. The density of the film is very high, typically Dlog of 4.5 – 5, giving it an excellent opacity to all common light sources.

Two concerns with emulsion film over glass are stability and robustness. Both the polyester and the gelatine absorb moisture and heat from their surroundings, and as such they undergo dimensional changes – quite considerably for some large area films. The other problem with the Gelatine/Emulsion is that it is relatively soft and must be handled carefully to avoid damage and scratches.

 

polyester film transmission


 

polyester specifications

 

Polyester film cross-section

FAQ's

Q: What does the term NEGATIVE and POSITIVE mean ?

A: Polarity is the tone of the photomask. When you draw your design, polarity determines whether the features on the film are CLEAR or BLACK on the final film. So, a NEGATIVE film would have the items you have drawn in CAD as CLEAR on the film. Obviously this is the opposite for POSITIVE, where the items you drawin CAD are BLACK on the film. 

Q: I've designed my mask with the wrong polarity - what do i do ? 

A: We can use the original design file and simply reverse the tone of the mask. This is much easier than supplying new data.

Q: What is Right Reading, Wrong Reading and Mirrored.

A: Its important to specify the View Side of the film. Right Reading Emulsion Side Down is the most common way to describe a film that will be used for contact lithography... so when you hold the film in your hands with the emulsion side facing down closest to the material, the image on the mask will be correct reading (text) . Alternatively, you can also specify the film as Right Reading Emulsion Side Up. We can very easily change the "view side" before we image the film by "mirroring" the data.

 

 

PDF Download

Material Safety Data Sheet

 

 

 

PDF Download

Dimensional Stability of Film v Glass photomasks

 

 

 

PDF Download

Photomasks - The Complete Guide

 

 

 

PDF Download

Quality Assurance Certificate