Browse Prior Art Database

Fold Length Sensor for Synchronous Stacker

IP.com Disclosure Number: IPCOM000109114D
Original Publication Date: 1992-Jul-01
Included in the Prior Art Database: 2005-Mar-23
Document File: 1 page(s) / 51K

Publishing Venue

IBM

Related People

Call, MG: AUTHOR [+3]

Abstract

A synchronous paper stacking mechanism consisting of separately- controllable components can perform automatic sensing of fold length adjustment. This enables verification of proper operator setup without resort to expensive multi-element length sensors, and avoidance of errors which might otherwise result in paper tears or machine damage. (Image Omitted)

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This is the abbreviated version, containing approximately 84% of the total text.

Fold Length Sensor for Synchronous Stacker

      A synchronous paper stacking mechanism consisting of
separately- controllable components can perform automatic sensing of
fold length adjustment.  This enables verification of proper operator
setup without resort to expensive multi-element length sensors, and
avoidance of errors which might otherwise result in paper tears or
machine damage.

                            (Image Omitted)

      During initialization, paper chute A, driven by a stepper
motor, will be swung under microprocessor control from a known 'home'
or initial position through a portion of its normal range of motion
calculated for the preselected paper size.  Sensor B, mounted to the
moveable portion of the spirals C and beaters D, is used to identify
the location of acceptable chute travel limits.  The chute position
at which swing-limit sensor triggering is expected is compared to its
actual location in real time.  Misadjustment of the movable spirals
and beaters will be signaled by sensor activity at location s other
than that determined from the fold length information.  Sensor
triggerings at step counts closer to the home position, indicate
beaters set too close together for selected fold length, and thus
enable a collision with the chute to the signaled and avoided, while
failures of the sensor to activate before the predetermined maximum
number of steps identify beaters set too far apart, and allow a
probable mis...