Browse Prior Art Database

Facsimile Transmission System

IP.com Disclosure Number: IPCOM000096488D
Original Publication Date: 1963-Jun-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 52K

Publishing Venue

IBM

Related People

Quade, EA: AUTHOR

Abstract

The facsimile transmission system scans a moving document in the sender by a cathode ray tube and two arrays of photocells. It prints a moving document in the receiver by a cathode ray tube, an array of photocells and a wire printer.

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Facsimile Transmission System

The facsimile transmission system scans a moving document in the sender by a cathode ray tube and two arrays of photocells. It prints a moving document in the receiver by a cathode ray tube, an array of photocells and a wire printer.

Rectangular array A of photoconductor cells is disposed on the face of cathode ray tube 1. Each cell of this array is And'd with a cell of linear array B of photoconductor cells. These are disposed in a line transverse to the movement of the document to be scanned. Cells B are connected with common load resistor
3.

The beam of CRT 1 strobing the cells of array A and the irradiation of the cells of array B provide a varying analog output in accordance with the black- white distribution along a line of the document. These signals control the intensity of the beam in CRT 2. This beam movement is synchronized with the movement of the beam in CRT 1. Rectangular array C of photoconductor cells disposed on the face of CRT 2 are selectively energized. Such action controls a linear array D of print wires which are associated with array C in the same way as array B is associated with array A.

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