Dismiss
InnovationQ will be updated on Sunday, Oct. 22, from 10am ET - noon. You may experience brief service interruptions during that time.
Browse Prior Art Database

Electromagnetic High Speed Stopper for Print Belt

IP.com Disclosure Number: IPCOM000052548D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 2 page(s) / 29K

Publishing Venue

IBM

Related People

Ruckser, D: AUTHOR

Abstract

The print belt is driven by an AC motor with more than one phase. When the motor is switched on, a DC current store (e.g., capacitor C1 in Fig. 1) is connected to line voltage. After the motor has been switched off, the voltage of C1 is applied to one or more motor coils, disconnecting the deceleration circuit and the motor from the line voltage. The energy stored in C1 is used to decelerate the motor in a short time. Resistor R2 serves to limit the charge current of C1 via diode D1. Resistor R1 is used to dose the deceleration effect. The degree of deceleration can be determined by suitably selecting C1 and R1.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 100% of the total text.

Page 1 of 2

Electromagnetic High Speed Stopper for Print Belt

The print belt is driven by an AC motor with more than one phase. When the motor is switched on, a DC current store (e.g., capacitor C1 in Fig. 1) is connected to line voltage. After the motor has been switched off, the voltage of C1 is applied to one or more motor coils, disconnecting the deceleration circuit and the motor from the line voltage. The energy stored in C1 is used to decelerate the motor in a short time. Resistor R2 serves to limit the charge current of C1 via diode D1. Resistor R1 is used to dose the deceleration effect. The degree of deceleration can be determined by suitably selecting C1 and R1.

When the line voltage is applied to the motor (Fig. 2), it is transformed into a suitable deceleration voltage by means of transformer TR operated between two phases. Via diode D2, this deceleration voltage is applied in a rectified form to capacitor C2. After the motor has been disconnected from the line voltage, a deceleration effect in accordance with Fig. 1 is obtained, so that the adaptation of C2 to the coil resistance of the motor is optimized via resistor R.

1

Page 2 of 2

2

[This page contains 2 pictures or other non-text objects]