Browse Prior Art Database

Dual Mode Copying System

IP.com Disclosure Number: IPCOM000090729D
Original Publication Date: 1969-Jun-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 37K

Publishing Venue

IBM

Related People

Hoskins, TA: AUTHOR [+2]

Abstract

A xerographic copying machine comprises rotating drum 10 having a photosensitive surface and an optical system for projecting images of original documents on a line-by-line basis to the photosensitive surface of such drum. The optical system includes stationary and flat transparent copy platen 13 for supporting bulky documents, such as book 14, a light assembly 15, and lens 16. Assembly 15 and lens 16 are mounted for coordinated reciprocating movement in the directions indicated by arrows 17. Assembly 15 and lens 16 scan book 14 on platen 13 when moving in one direction and are quickly returned to the starting position by movement in the opposite direction. In another mode of operation of the copying machine, assembly 15 and lens 16 are moved to stationary positions adjacent one edge of platen 13.

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Dual Mode Copying System

A xerographic copying machine comprises rotating drum 10 having a photosensitive surface and an optical system for projecting images of original documents on a line-by-line basis to the photosensitive surface of such drum. The optical system includes stationary and flat transparent copy platen 13 for supporting bulky documents, such as book 14, a light assembly 15, and lens 16. Assembly 15 and lens 16 are mounted for coordinated reciprocating movement in the directions indicated by arrows 17. Assembly 15 and lens 16 scan book 14 on platen 13 when moving in one direction and are quickly returned to the starting position by movement in the opposite direction. In another mode of operation of the copying machine, assembly 15 and lens 16 are moved to stationary positions adjacent one edge of platen 13. Single sheet documents are fed from stack 19 across scanning slit 20 by document moving apparatus so that an image of the document is projected to the photosensitive surface of drum 10. The scanned original document moves across platen 13 to output hopper 21. Document moving apparatus, which recirculates the document past slit 20 a number of times corresponding to the desired and preselected number of copies prior to passing the document to an output hopper, can also be employed. Book 14 or other bulky document is removed from platen 13 during this mode of operation.

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