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Dual Print Hammer System

IP.com Disclosure Number: IPCOM000080143D
Original Publication Date: 1973-Nov-01
Included in the Prior Art Database: 2005-Feb-27
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Meier, JH: AUTHOR

Abstract

Dual-print hammer system 10 of Fig. 1 is utilized with a print wheel 11 in an on-the-fly printer system. Twin hammers 13 and 14 are pivotally mounted in a flexure supported system 15. Flexure members 15a-15b, which are affixed to the carriage frame 15c are provided for this purpose. Hammers 13 and 14 are spaced at the desired character spacing employed with the recording medium, not shown. The hammers 13 and 14 are selectively operated by control means, partially shown, and which include hammer push rods 16 and 17. The latter are selectively actuated by the armatures 18 and 19 associated with respective relays, the core and coil 20 of only one of which is shown.

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Dual Print Hammer System

Dual-print hammer system 10 of Fig. 1 is utilized with a print wheel 11 in an on-the-fly printer system. Twin hammers 13 and 14 are pivotally mounted in a flexure supported system 15. Flexure members 15a-15b, which are affixed to the carriage frame 15c are provided for this purpose. Hammers 13 and 14 are spaced at the desired character spacing employed with the recording medium, not shown. The hammers 13 and 14 are selectively operated by control means, partially shown, and which include hammer push rods 16 and 17. The latter are selectively actuated by the armatures 18 and 19 associated with respective relays, the core and coil 20 of only one of which is shown.

Rotatably mounted to the extension arm 15d of system 15 is a cam follower 21 which coacts with the cam wheel 22. The latter is mounted on a motor shaft
23. The motor, not shown, rotates the print wheel 11 in direction A. It also, via a suitable lead screw mechanism, not shown, moves the aforementioned carriage assembly in direction B when printing.

The print wheel 11 employs a substantially twelve o'clock print orientation. The fields of the type font or type characters, which are disposed on the face of wheel 11 remote from the hammers 13 and 14 along the outer periphery thereof, are inclined at different angles with respect to the wheel's respective radial axes passing through the respective centers of the fields. The inclinations are such that as each character becomes aligned...