Browse Prior Art Database

Pivoted Type Carrier

IP.com Disclosure Number: IPCOM000093122D
Original Publication Date: 1967-May-01
Included in the Prior Art Database: 2005-Mar-06
Document File: 2 page(s) / 30K

Publishing Venue

IBM

Related People

Harrington, RH: AUTHOR

Abstract

In high-speed printers using type carriers moving in the line direction, there can be relative motion between the type and the paper at the time of impact. This results in character smear.

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Pivoted Type Carrier

In high-speed printers using type carriers moving in the line direction, there can be relative motion between the type and the paper at the time of impact. This results in character smear.

As shown in A and B, type elements 10 are slideably mounted in type carrier 11 fixed to belt 12. The latter is continuously driven in the direction indicated by the arrow. Type elements 10 have camming surfaces 13 coacting with forward tapered edges 14 of carrier 11. Coil springs 15, in combination with stops 16 fixed to elements 10, serve to hold elements 10 in a retracted position in carrier
11.

When an element 10 is struck by a hammer, it moves forward into contact with ribbon 17 and paper 18 to form the impression. At the same time element 10 is in contact with the ribbon and paper, carrier 11 is moving in the direction indicated by the arrow. Since the width of opening 19 in carrier 11 is greater than the width of the shank of element 10, the latter momentarily remains stationary. Upon retraction of element 10, cam surface 13 on element 10 and edge 14 of carrier 11 serve to reposition element 10 into its proper location for the next printing operation.

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