# US 7,610,009 B2 · Image recording apparatus

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- Number: US 7,610,009 B2
- Document ID: US7610009B2
- Status: Granted
- Kind: B2
- Application number: 11/484,859
- Filed: 2006-07-12
- Published: 2006-12-07
- Granted: 2009-10-27
- Earliest claimed: 2006-07-12
- Assignees: Fuji Xerox Co., Ltd.
- Inventors: Katsuya Shimatsu
- Web page: https://patentgrep.com/patent/US7610009B2

## CPC

- G03G 15/6517: {Apparatus for continuous web copy material of plain paper, e.g. supply rolls; Roll holders therefor}
- G03G 15/1695: {with means for preconditioning the paper base before the transfer}
- G03G 2215/00455: Continuous web, i.e. roll
- G03G 2215/0119: Linear arrangement adjacent plural transfer points
- G03G: ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY

## Abstract

An image recording apparatus includes: a transfer roller that transfers an image formed on a photoconductor drum onto continuous paper pressed against the photoconductor drum; and guide rollers that regulate the position of the continuous paper with respect to the photoconductor drum.

## Claims

### Claim 1

An image recording apparatus comprising:
a plurality of conveyor rollers that convey paper;
a photoconductor drum, a toner image being formed on the photoconductor drum;
a transfer roll that transfers the toner image on the photoconductor drum onto the paper conveyed by the plurality of conveyor rollers, the paper being pressed against the photoconductor drum;
a first guide roller that is disposed at an upstream side of the transfer roller in a conveyance direction of the paper, the first guide roller being movable in a direction perpendicular to the surface of the paper; and
a second guide roller that is disposed at a downstream side of the transfer roller in a conveyance direction of the paper, the second guide roller being movable in a direction perpendicular to the surface of the paper, wherein
the first guide roller and the second guide roller push the paper by moving to a side of the transfer roller in a direction perpendicular to the surface of the paper at least when the toner image is transferred from the photoconductor drum to the paper.

### Claim 2 (depends on 1)

The image recording apparatus of claim 1, wherein
a contact width of the paper contacting the photoconductor drum due to the first guide roller and the second guide roller is larger than a nip width of the transfer roller,
a position at which the paper starts contacting the photoconductor drum is farther upstream in the conveyance direction of the paper than a position at which the transfer roller starts nipping the paper, and
a position at which the paper stops contacting the photoconductor drum is farther downstream in the conveyance direction of the paper than the position at which the transfer roller stops nipping the paper.

### Claim 3 (depends on 1)

The image recording apparatus of claim 1, wherein the first guide roller and the second guide roller are movable in the conveyance direction of the paper, and wherein a position of at least one of the first guide roller and the second guide roller is changed in accordance with the thickness of the paper and the hygrothermal environment.

### Claim 4 (depends on 1)

The image recording apparatus of claim 1, wherein at least one of the first guide roller and the second guide roller is connected to a ground.

### Claim 5 (depends on 1)

The image recording apparatus of claim 1, wherein a resistor is disposed between at least one of the first guide roller and the second guide roller and the ground.

### Claim 6 (depends on 1)

The image recording apparatus of claim 1, wherein the region where the photoconductor drum and the paper contact each other is maintained at a predetermined size.

### Claim 7 (depends on 1)

The image recording apparatus of claim 1, further comprising:
a destaticization opposing roller; and
a paper destaticizing charger, wherein
the destaticization opposing roller and the paper destaticizing charger are disposed at opposing positions, with the continuous paper sandwiched therebetween, downstream of the transfer roller in the conveyance direction of the paper.

### Claim 8 (depends on 1)

The image recording apparatus of claim 1, wherein the paper transferred by the plurality of conveyance roller is continuous paper.