Browse Prior Art Database

Non Impact Printer Typewriter

IP.com Disclosure Number: IPCOM000096004D
Original Publication Date: 1964-Nov-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 2 page(s) / 50K

Publishing Venue

IBM

Related People

Kane, MH: AUTHOR [+2]

Abstract

This device prints by discharging an area in the form of a character on a transparent photosensitive electrostatic material and then offset prints on paper.

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Non Impact Printer Typewriter

This device prints by discharging an area in the form of a character on a transparent photosensitive electrostatic material and then offset prints on paper.

Electrostatic material 1 is transported past printing station 3 where an image of a character is projected on the material, lower drawing. The processed, i. e., toned, image is visible immediately when viewed from the front of the machine. The image is then electrostatically transferred to paper 5. The electrostatic photosensitive material is kept in the dark until after exposure and development. The protective shelf 7 under printing station 3 forms a light-restricting shield over the material below the printing line. Retractable tapes 9 on each side of the paper keep the writing line unilluminated.

The character is formed by first charging the electrostatic material with a single character charger 1 1, top drawing. The image is then produced on the electrostatic material by flashing an xenon-arc strobe lamp 13 through character font mask 15. Next, toner ink is attracted to the character image from toner arm
17. The developed image, after toning, can be exposed to room light, and can be viewed by the operator.

The erasable nature of the photosensitive electrostatic material allows the possibility of error correction. The transparency of electrostatic material allows off-printing from the toned image to diazo by exposure to a long arc-lamp rich in
U. V. light.

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