Browse Prior Art Database

VARIABLE PITCH CONTROL

IP.com Disclosure Number: IPCOM000024821D
Original Publication Date: 1982-Apr-30
Included in the Prior Art Database: 2004-Apr-04
Document File: 2 page(s) / 64K

Publishing Venue

Xerox Disclosure Journal

Abstract

Copier control software basically works by generating a sequential list of events for a particular copying run that must be performed in the making of a copy. This list can be a mixture of fixed and variable events, or it can be composed solely of either. Once this list is generated, a pointer into the list is started at the top of the list for each copy to be inserted into the copying process. The 'spatial interval' between similar items on list 'copies' corresponds to the particular pitch being run on the copier for the particular job in process. Although a copier currently operates with a capability of n fixed pitches, the copier could nevertheless run asynchronously with a variable pitch based, for example, on electro-mechanical perf or mance.

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XEROX DISCLOSURE JOURNAL

VARIABLE PITCH CONTROL Proposed Stephen P. Wilczek Classification

U.S. C1. 355/14 Int. C1. G03g 15/00

Copier control software basically works by generating a sequential list of events for a particular copying run that must be performed in the making of a copy. This list can be a mixture of fixed and variable events, or it can be composed solely of either. Once this list is generated, a pointer into the list is started at the top of the list for each copy to be inserted into the copying process. The 'spatial interval' between similar items on list 'copies' corresponds to the particular pitch being run on the copier for the particular job in process. Although a copier currently operates with a capability of n fixed pitches, the copier could nevertheless run asynchronously with a variable pitch based, for example, on electro-mechanical perf or mance.

To permit variable event timing to accommodate machine tolerances and customer preferences, and to provide multiple 'pitches' with the closest possible spacing between images on the photoreceptor, the latter to accommodate a multi-use, multi-market machine, 'near-term items' from each 'copy' of the list (each 'list copy' corresponds to a copy), are merged into a chronological short-term list where 'time' may be the passage of real time or may be signals corresponding to incremental motion of the copier. The items on the merged list are then associated with the event to be performed, parametric i...