Exposure station for contact copier - has two pairs of pressure rollers to define exposure slit

摘要

Exposure station for contact copier with two pairs of pressure rollers(8, 9, 10, 11) between which is set the exposure slit(3). The underside of the copy and document is supported by a fifth roller(12) while a shield(13) over the outside of the upper rollers prevents stray light from scattering to adjacent frames. The system provides an accurate and high speed contact copier which can be used to copy microfilm.