Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Print/Emboss Position Sensing Device

IP.com Disclosure Number: IPCOM000081684D
Original Publication Date: 1974-Jul-01
Included in the Prior Art Database: 2005-Feb-28
Document File: 2 page(s) / 34K

Publishing Venue

IBM

Related People

Loeber, NC: AUTHOR

Abstract

This device permits a print operation, only when a type element carrier 10 is properly aligned with respect to the platen of a typewriter or an embosser. Braille characters are typed or embossed only every 3 positions on a 12 -pitch machine; the other two positions are invalid for the operation.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Print/Emboss Position Sensing Device

This device permits a print operation, only when a type element carrier 10 is properly aligned with respect to the platen of a typewriter or an embosser. Braille characters are typed or embossed only every 3 positions on a 12 -pitch machine; the other two positions are invalid for the operation.

A strip 12 of ferrous metal is mounted in the frame of the machine adjacent the path of the carrier 10. A pair of arms 14, 16 are arranged at every valid position to form a U-shaped cone. An electric coil 18 is arranged in the strip 12 to link all the cones. A ferrous metal pin 20 is mounted on the carrier 10 to travel closely along a path defined by the ends of the arms 14, 16. The pin 20 is effective to close or shorten the path of magnetic flux brought about by application of sensing alternating current. The change in flux produces a difference in the sensing current level, which is used to control or gate the print/ emboss function.

1

Page 2 of 2

2

[This page contains 3 pictures or other non-text objects]