# US 5,708,512 A · Facsimile apparatus and recording method therein

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- Number: US 5,708,512 A
- Document ID: US5708512A
- Status: Granted
- Kind: A
- Application number: 08/473,993
- Filed: 1995-06-07
- Granted: 1998-01-13
- Earliest claimed: 1989-07-07
- Assignees: Canon Kabushiki Kaisha
- Inventors: Haruo Ishizuka
- Web page: https://patentgrep.com/patent/US5708512A

## CPC

- H04N 1/0402: {Scanning different formats; Scanning with different densities of dots per unit length, e.g. different numbers of dots per inch (dpi); Conversion of scanning standards (H04N1/00283 takes precedence; picture signal circuits for modification of image resolution H04N1/3935, H04N1/40068)}
- H04N 1/0411: {in the main scanning direction}
- H04N 1/0414: {in the sub scanning direction}
- H04N 1/0417: {Conversion of standards}
- H04N 1/0443: {Varying the scanning velocity or position}
- H04N 1/33315: {reading or reproducing mode only, e.g. sheet size, resolution}
- H04N 1/393: Enlarging or reducing
- H04N 1/1135: {for the main-scan only}
- H04N 1/12: using the sheet-feed movement {or the medium-advance or the drum-rotation movement} as the slow scanning component, {e.g. arrangements for the main-scanning}({sheet-feed movement by translatory movement of a flat picture-bearing surface H04N1/1008; main-scanning using oscillating or rotating mirrors H04N1/113; } using multi-element arrays H04N1/19)
- H04N: PICTORIAL COMMUNICATION, e.g. TELEVISION

## Abstract

A facsimile apparatus receives image information and recording the image information by use of a laser-beam printer. In a case where the document size of the received image information is larger than the size of the recording paper, the recording resolution of the laser-beam printer in each of main-scanning and sub-canning directions is changed and set, and recording of the received image information is performed at the set resolution.

## Claims

### Claim 1

A device which controls a recording means for recording an image in any of a plurality of recordable resolutions on a recording paper having a size, comprising:
specifying means for specifying a size and resolution of an image to be transmitted from an image information transmitting apparatus based on data from the image information transmitting apparatus;
first judging means for judging whether or not the specified size of the image specified by said specifying means corresponds to the size of said recording paper;
second judging means for judging whether or not, in a case where said first judging means judges that the specified size does not correspond to the size of said recording paper, the image of the specified size can be reduced to be within the size of said recording paper by setting a resolution at the recording means, the set resolution being one of the recordable resolutions and being different from the resolution specified by said specifying means; and
requesting means for requesting an image of reduced size from the image information transmitting apparatus, in a case where said second judging means judges that the image of the specified size cannot be reduced to be within the size of said recording paper.

### Claim 2 (depends on 1)

The device according to claim 1, wherein said device has a facsimile function.

### Claim 3

An image forming apparatus comprising:
recording means for recording an image in any of a plurality of recordable resolutions on a recording paper having a size;
specifying means for specifying a size and resolution of an image to be transmitted from an image information transmitting apparatus based on data from the image information transmitting apparatus;
first judging means for judging whether or not the specified size of the image specified by said specifying means corresponds to the size of said recording paper;
second judging means for judging whether or not, in a case wherein said first judging means judges that the specified size does not correspond to the size of said recording paper, the image of the specified size can be reduced to be within the size of said recording paper by setting a resolution at said recording means, the set resolution being one of the recordable resolutions and being different from the resolution specified by said specifying means; and
requesting means for requesting an image of reduced size from said image information transmitting apparatus, in a case where said second judging means judges that the image of the specified size cannot be reduced to be within the size of the recording paper.

### Claim 4 (depends on 3)

The apparatus according to claim 3, wherein said apparatus has a facsimile function.

### Claim 5 (depends on 3)

The apparatus according to claim 3, wherein said recording means performs recording by a laser-beam printer.

### Claim 6 (depends on 4)

The apparatus according to claim 4, wherein the resolution is controlled in main-scanning and sub-scanning directions by changing a flashing speed of a semiconductor laser in said laser-beam printer and a rotating speed of a conveyance motor.

### Claim 7 (depends on 4)

The apparatus according to claim 4, wherein the resolution is controlled by changing a rotating speed of a rotating polygon mirror in said laser-beam printer.