# US 4,394,665 A · Electrical contact for conductive-backed paper

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 4,394,665 A
- Document ID: US4394665A
- Status: Granted
- Kind: A
- Application number: 06/382,039
- Filed: 1982-05-26
- Granted: 1983-07-19
- Earliest claimed: 1982-05-26
- Assignees: Honeywell Inc.
- Inventors: Gerald F. Kopp
- Web page: https://patentgrep.com/patent/US4394665A

## CPC

- G03G 15/06: for developing
- G01D 15/16: Recording elements transferring recording material, e.g. ink, to the recording surface (printing recording elements G01D15/20)
- G06K 15/14: by electrographic printing, e.g. xerography; by magnetographic printing {(G06K15/12 takes precedence)}
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G01D: MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
- G06K: GRAPHICAL DATA READING (image or video recognition or understanding G06V); PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS

## Abstract

An electrically conductive wire brush for use with a conductive-backed recording paper to conduct electrical energy to the conductive backing of the paper thereby heating it to develop an image, the brush making flexible contact with the paper substantially continuously throughout its width.

## Claims

### Claim 1

Apparatus for use in a recorder having a moving conductive-backed paper to supply electrical energy to the conductive backing comprising:
a wire brush for applying a uniform heating current to the paper, the brush including a sufficient number of wire bristles to contact the conductive backing in a substantially continuous fashion across the paper so that all portions of the paper proximate the brush are contacted, the wire bristles being fine enough to bend and make a flexible contact with the conductive backing; and
means connecting the wire brush to a source of electrical energy.

### Claim 2 (depends on 1)

Apparatus according to claim 1 wherein the wire elements are fixed in a conductive extrusion.

### Claim 3 (depends on 2)

Apparatus according to claim 2 wherein the extrusion is mounted in a holder having an upwardly extending rounded back portion.

### Claim 4 (depends on 3)

Apparatus according to claim 3 wherein the holder is mounted so that the upwardly extending rounded back portion is in contact with the paper and the wire bristles are bent so that the paper moves thereover without extreme tension.

### Claim 5 (depends on 1)

Apparatus according to claim 1 wherein the wire elements are stainless steel filaments of about 12 micron diameter with a density of about 18,000 filaments per inch.

### Claim 6 (depends on 1)

Apparatus according to claim 1 further including a second wire brush mounted to contact the paper at a position remote from the first named wire brush, the second wire brush being connected to ground so that current flows from the first named wire brush to the second wire brush through the conductive backing of the paper.

### Claim 7 (depends on 6)

Apparatus according to claim 6 further including a roller in contact with the paper at a position remote from the first named wire brush on the opposite side of the first named wire brush from the second wire brush so that current also flows from the first named wire brush to the roller through the conductive backing of the paper.