Du Pont Cyrel FAST 2000TD, Operation Manual

Page: 17 / 106

Functional description
1-7
Clamp bars and transport arms
The clamp bars are attached to the transport arms and thus comprises the plate transport system.
Developer material supply and waste
When the plate reaches the nip it meets the developer material consisting of a nonwoven (NW) and a thin
polyethylene (PET). The nonwoven absorbs the unexposed photopolymer from the plate while the PET
protects the heated roller and transport rollers from the photopolymer absorbed by the nonwoven.
The supply rollers hold the new unused material of nonwoven and PET.
The waste of both NW and PET is collected and rolled up on one waste roller.
During the development process the effective diameter of the rollers are measured by an encoder, and
when the supply material is about to run out, the encoder sends a signal to the electronic control which
then sends an alarm to the operator. Likewise, when the waste roller is full.
Nip
The nip (A) comprises two rollers: the format cylinder (FC) and the heated roller (HR).
The heated roller moves down to close the nip when the front end of the photopolymer plate passes the nip
and the actual developing process starts. The heated roller automatically pulls back (B) each time the front
and rear clamp bar passes during the development process.
The format cylinder is mounted inside the drum. On the format cylinder is mounted a slip fit adapter (SFA)
which is a compressible foam sleeve.
Static drum
The static drum consists of a frame mounted with steel rollers to support the plate when pulled around the
drum.
The static drum thus remains steady while the transport arms transport the plate around the drum.
Cooling system
To ensure the correct plate and internal temperature is controlled, a chiller unit supplies cooled water to
the temperature control system inside the static drum.
January, 2020 Operation Manual | Cyrel FAST 2000TD