I currently use an imagesetter to produce film positive output with up to a 200-line screen. Is there any alternative to high resolution imaging that does not require using a chemical processor?
There are solutions, but it will depend on what your requirements are in terms of size and how much you are willing to compromise and how deep your pockets are
1. Thermal, There are some solutions around from a couple of companies. The MPM product is a great little product for its designed target, which is low LPI work as runs as 1207DPI from memory.
For people who need larger formats There are some thermal systems that go up to 54" wide, but the quality drops as the resolution is 600DPI/Interlaced 1200DPI,
2.. Inkjet, this is very popular as very cheap, depending on your needs can be done with simple cut sheet A4 on cheap home printers, but for more real life production situations T3200 or the P10000/20000 can be popular. Resolution is quite high 2880/2400 however quality is not what you will get on a laser system, while software and hardware will output at 200 LPI This inmy view is pushing it. if you look at the dots (even if imaging on the same RIP) will see a difference as drop placement is not as accurate. Registration is also less accurate in larger sizes. But for most users Inkjet works well
Also worth noting is Ink, Epsons usually come with 2 Inks, PhotoBlack which has a low D Max and Matte Black which has a high Dmax, but will scratch and smear when rubbed. As such there are 3rd party inks aimed at this market, High Dmax with better scratch resistance. Some are pigment based some are dye based, some are great some are very poor. If you go down this route get samples of your job made and make plates to check it is suitable
3. Ablative film. Not something I have used myself. but if your looking for quality of traditional imagesetter without chemicals, this is probably the closest system. It works on high power laser based systems. The flint version of the film can run up to 10000DPI, no chemicals, scratch resistant, runs in normal light. Sounds great,, But.. (there is always a but) these films are typically imaged on Flexo CTP systems, so cost of equipment is very high and only seen system where they are loaded as a sheet manually on the drum