Browse Prior Art Database

Unit Removal Sense Mechanism

IP.com Disclosure Number: IPCOM000113566D
Original Publication Date: 1994-Sep-01
Included in the Prior Art Database: 2005-Mar-27
Document File: 2 page(s) / 62K

Publishing Venue

IBM

Related People

Kanno, T: AUTHOR [+2]

Abstract

This article describes a Unit Removal Sense Mechanism which can recognize the removing and resetting operation of the removal unit during not only power on condition but power off condition. Fig. 1 shows the example of this mechanism.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 54% of the total text.

Unit Removal Sense Mechanism

      This article describes a Unit Removal Sense Mechanism which can
recognize the removing and resetting operation of the removal unit
during not only power on condition but power off condition.  Fig. 1
shows the example of this mechanism.

      This mechanism has 3 conditions (Figs. 2, 3 and 4).  Fig. 2 is
the initial condition with the removal unit and the sensor status is
"ON".  When the unit is removed, the turning plate is stuck to the
magnet and the sensor status is changed to "OFF" (Fig. 3).
Afterwards the unit is reset, the roller is pushed by the unit bottom
and the plate spring is bent, but the sensor status is still "OFF"
(Fig. 4).  By the current of the magnet core, the turning plate is
released from the magnet and the sensor status is changed from "OFF"
to "ON" and the condition returns to initial (Fig. 1).

      During the system power on, the unit removal and resetting
operation can be recognized easily by monitoring the sensor status.
This mechanism can recognize the unit removal and resetting operation
by following method.

      If the unit removal and resetting operation is not occurred
during the system power off, the initial condition (Fig. 2) is not
changed and the system can recognize it bucause the sensor status is
"ON" at the system power on.  If the unit removal and resetting
operation is occurred during system power off, the condition is Fig.
4 at the system power on and the sensor status is "O...