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Charging Device with Point by Point Voltage Control

IP.com Disclosure Number: IPCOM000019194D
Publication Date: 2003-Sep-03
Document File: 1 page(s) / 64K

Publishing Venue

The IP.com Prior Art Database

Abstract

The charging device is a series of individual pins or wire segments mounted on a nonconductive substrate. Each charge pin is connected to the voltage source via a voltage amplifier. Each voltage amplifier is connected to the address decoder, and a data buss decoder. The address decoder and data buss decoder are routed to the system buss of the Image Output Terminal (IOT).

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Charging Device with Point by Point Voltage Control

Charging of an imaging surface is non-uniform across the surface. Previous efforts to improve on this include scorotron grids, corotron pins, etc.

Schematic:

Diagram:

Description:

The charging device is a series of individual pins or wire segments mounted on a nonconductive substrate. Each charge pin is connected to the voltage source via a voltage amplifier. Each voltage amplifier is connected to the address decoder, and a data buss decoder. The address decoder and data buss decoder are routed to the system buss of the Image Output Terminal (IOT).

Based on the IOT function, each charging pin can be activated individually via control signals from the IOT system buss. The address decoder selects the chosen charge pin amplifier. Based on required charge strength, the amplifier gain is set from the data buss decoder. The gain of each amplifier would be correlated to the desired pin charge.

Utilizing this method the charge can be varied on each pin, from full - off to full - on and steps in between. This will allow the IOT to have more control over the output image quality of every document. Highlighting, contrast and grayscale can be more defined by integrating the output scanning device with charge pin control.