a. In the roller-transport system the paper is guided through the machine by a series of rollers that are
placed in a staggered pattern (fig 1-6). This type of system is usually found in the smaller type processors but
can also be found in some of the larger floor models. The size (width) of the paper to be processed is only
dependent upon the maximum width allowed by the processor.
b. The belt-drive system uses a belt that is threaded through the machine between the outer ends of the
rollers. The paper is threaded through a clip which is then attached to the belt to be transported through the
machine for processing (fig 1-7).
c. Of the two types of transport systems, the roller-transport is the more efficient and better of the two.
A roller-type system provides better tracking. Materials are squeegeed while passing through exit rollers before
being transferred to the next step and the roller also gives a mild agitation effect, an important technique in the
proper development of photographic materials.
d. Finally, drive systems generally consist of a motor, a variable speed transmission, and a drive chain
which produces rotation of the transport rollers, usually through a system of clutches.
Figure 1-6. Roller-transport system
e. Paper is inserted through clip, clip attached to belt, belt transports clip and paper through processor.