Browse Prior Art Database

Line Printer Using Type Belt

IP.com Disclosure Number: IPCOM000090478D
Original Publication Date: 1969-Apr-01
Included in the Prior Art Database: 2005-Mar-05
Document File: 2 page(s) / 45K

Publishing Venue

IBM

Related People

Tsui, F: AUTHOR

Abstract

A chain printer with harmer unit 1 fires type elements 2 of driven chain 3 against paper 4 on platen 5. Chain 3 takes the form of a flexible belt with regions 6 of embedded magnetic material which can be either soft or permanently magnetized. Chain 3 moves in guides 7a and 7b and is surrounded by electromagnets 8 producing N-phase magnetic shifting fields where N>/- 3. If the embedded material is soft, pulsed unipolar magnetic fields are used for shifting. Pulsed bipolar magnetic fields are employed for permanently magnetized embedded materials. Separate application of the pulses generating the advancing and braking fields causes chain 3 to be decelerated only at the printing positions.

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Line Printer Using Type Belt

A chain printer with harmer unit 1 fires type elements 2 of driven chain 3 against paper 4 on platen 5. Chain 3 takes the form of a flexible belt with regions 6 of embedded magnetic material which can be either soft or permanently magnetized. Chain 3 moves in guides 7a and 7b and is surrounded by electromagnets 8 producing N-phase magnetic shifting fields where N>/- 3. If the embedded material is soft, pulsed unipolar magnetic fields are used for shifting. Pulsed bipolar magnetic fields are employed for permanently magnetized embedded materials. Separate application of the pulses generating the advancing and braking fields causes chain 3 to be decelerated only at the printing positions.

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