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Browse Prior Art Database

PRINT WHEEL SENSING SCHEME

IP.com Disclosure Number: IPCOM000024031D
Original Publication Date: 1979-Jun-30
Included in the Prior Art Database: 2004-Apr-01
Document File: 2 page(s) / 228K

Publishing Venue

Xerox Disclosure Journal

Abstract

A print wheel 10 includes a magnetic or optical sensing strip 12 that is detectable by a sensor (not shown) to detect the "home'-rotational position of the wheel. Additional sensing strips 14, 16 and 18 may be formed about the wheel wherein the spacing between adjacent strips 14, 16 and 18 is used to define unique codes

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XEROX DISCLOSURE JOURNAL

PRINT WHEEL SENSING SCHEME Kenneth W. Cocksedge
Mario G. Plaza

Proposed Classification
U.S. Cl. 400/144.2 mt. Cl. B41j 7/92

A print wheel 10 includes a magnetic or optical sensing strip 12 that is detectable by a sensor (not shown) to detect the "home'~rotational position of the wheel. Additional sensing strips 14, 16 and 18 may be formed about the wheel wherein the spacing between adjacent strips 14, 16 and 18 is used to define unique codes capable of indicating, for example, the style of font of the characters on the wheel as well as the overall hammer energy level selected for the characters as a whole.

An inductive transducer (not shown) mounted on the print wheel drive shaft (also not shown) generates at least one pulse for each character space movement of the wheel. Thus, the pulse count between adjacent strips 14 and 16 can be used to define a desired font style code, for example, whereas the spacing between strips 16 and 18 can be used to define a desired hammer energy level.

Volume 4 Number 3 May/3une 1979 415

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                  XEROX DISCLOSURE JOURNAL 416 Volume 4 Number 3 May/June 1979

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