Some systems use a photopolymer in place of the crystal.

Setting type by hand has become less common with the invention of the photopolymer plate.

There are two main types of printing plate materials: photopolymer and steel.

Also, the process of synthesis of photopolymer is much simpler.

After leveling, the platform is covered with a thin layer of liquid photopolymer.

The membrane unit separates photopolymer from the washout water.

Typically the phenomenon occurs when "green" epoxy photopolymer components are left in direct contact with each other.

In the image area, the silicone has been removed to expose the ink receptive photopolymer material.

Like 3D, Cubital builds a part by exposing a photopolymer to ultraviolet light.

Wherever the beam strikes the surface, the photopolymer polymerizes/crosslinks and changes to a solid.

Additionally, photopolymer stamps are growing in popularity.

Silicone stamps have many of the same properties of the photopolymer stamps.

While less common in contemporary letterpress printing, it is possible to print halftoned photographs, via photopolymer plates.

A photopolymer is a polymer that changes its properties when exposed to light, often in the ultraviolet frequency of the electromagnetic spectrum.

With this process there is no integral ablation mask as with direct photopolymer laser imaging (see below).

With this process the electronically-generated image is scanned at speed to a photopolymer plate material that carries a thin black mask layer on the surface.

It uses water-wash photopolymer plates, which are as good as any solvent-washed flexo plate.

After addition of absorb gelatine for example, the photopolymer residue can be disposed of as standard solid waste together with household refuse.

Objet Geometries Ltd is engaged in the design, development and manufacture of photopolymer 3D printing systems.

In Hull's patent, a concentrated beam of ultraviolet light is focused onto the surface of a vat filled with liquid photopolymer.

However the CDI systems can work with any brand of photopolymer plate provided it has an integral black mask layer to absorb laser energy.

The process can differ depending on whether solid sheets of photopolymer or liquid photopolymer are used, but the principle is still the same.

The remaining black layer absorbs the ultraviolet radiation, which polymerizes the underlying photopolymer where the black layer has been removed.

Matsubara (1974) of Mitsubishi proposed a topographical process with a photo-hardening photopolymer resin to form thin layers stacked to make a casting mold.

Under exposure, IR light, controlled by the film carrier, passes through the silicone layer of the plate and strikes the photopolymer layer beneath.