Image reading apparatus, method and memory medium therefor

An image reading apparatus comprising:

• a reading unit adapted to read the image on an original, said reading unit having a predetermined reading width;
• a discriminating unit adapted to discriminate the size of the original;
• a first movement unit adapted to cause a relative movement of said reading unit and the original in a sub-scanning direction so that said reading unit reads the image on the original in an overlapping manner;
• a second movement unit adapted to cause a relative movement between said reading unit and the original in a main scanning direction;
• and
• a control unit adapted to vary the range of overlapped reading by said reading unit, according to the size of the original discriminated by said discriminating unit.

An image reading apparatus comprising:

• a reading unit adapted to read the image on an original, said reading unit having a predetermined reading width;
• a discriminating unit adapted to discriminate a reading mode of said reading unit, the reading mode being set according to the color of reading;
• a first movement unit adapted to cause a relative movement of said reading unit and the original in a sub-scanning direction by an amount smaller than said predetermined reading width;
• a second movement unit adapted to cause a relative movement between said reading unit and the original in a main scanning direction;
• and
• a control unit adapted to vary the amount of relative movement in said sub-scanning direction by said first movement unit, according to the reading mode discriminated by said discriminating unit.

An image reading apparatus comprising:

• a reading unit adapted to read the image on an original, said reading unit having a predetermined reading width;
• a discriminating unit adapted to discriminate a reading mode of said reading unit, the reading mode being set according to the reading resolution;
• a first movement unit adapted to cause a relative movement of said reading unit and the original in a sub-scanning direction by an amount smaller than said predetermined reading width;
• a second movement unit adapted to cause a relative movement between said reading unit and the original in a main scanning direction;
• and
• a control unit adapted to vary the amount of relative movement in said sub-scanning direction by said first movement unit, according to the reading mode discriminated by said discriminating unit.

An image reading method comprising the steps of:

• reading the image on an original by a reading unit;
• causing a relative movement of the reading unit and the original in such a manner that the reading unit reads the image on the original in overlapped manner;
• setting a reading color for reading by the reading unit;
• and
• controlling the range of overlapped reading by the reading unit, according to the reading color.

An image reading method comprising the steps of:

• reading the image on an original by a reading unit, the reading unit having a predetermined reading width;
• discriminating the size of the original;
• causing a first relative movement between the reading unit and the original in a sub-scanning direction so that said reading unit reads the image on the original in an overlapping manner;
• causing a second relative movement between the reading unit and the original in a main scanning direction;
• and
• varying the range of overlapped reading by said reading unit, according to the discriminated size of the original.

A memory medium storing a program, said program comprising:

• reading an image on an original by a reading unit;
• causing a relative movement of the reading unit and the original in such a manner that the reading unit reads the image on the original in overlapped manner;
• setting a reading color for reading by the reading unit;
• and
• varying the range of overlapped reading by the reading unit, according to the reading color.

A memory medium storing a program, said program comprising:

• reading an image on an original by a reading unit, the reading unit having a predetermined reading width;
• discriminating the size of the original;
• causing a first relative movement between the reading unit and the original in a sub-scanning direction so that said reading unit reads the image on the original in an overlapping manner;
• causing a second relative movement between the reading unit and the original in a main scanning direction;
• and
• varying the range of the overlapped reading by said reading unit, according to the discriminated size of the original.

An image reading method comprising the steps of:

• reading the image on an original by a reading unit, the reading unit having a predetermined reading width;
• discriminating a reading mode of the reading unit, the reading mode being set according to the color of reading;
• causing a first relative movement between the reading unit and the original in the sub-scanning direction by an amount smaller than the predetermined reading width;
• causing a second relative movement between the reading unit and the original in the main scanning direction;
• and
• varying the amount of the first relative movement in the sub-scanning direction, according to the discriminated reading mode.

A memory medium storing a program, said program comprising:

• reading an image on an original by a reading unit, the reading unit having a predetermined reading width;
• discriminating a reading mode of the reading unit, the reading mode being set according to the color of reading;
• causing a first relative movement between the reading unit and the original in the sub-scanning direction by an amount smaller than the predetermined reading width;
• causing a second relative movement between the reading unit and the original in the main scanning direction;
• and
• varying the amount of the first relative movement in the sub-scanning direction, according to the discriminated reading mode.

An image reading method comprising the steps of:

• reading the image on an original by a reading unit, the reading unit having a predetermined reading width;
• discriminating a reading mode of the reading unit, the reading mode being set according to the reading resolution;
• causing a first relative movement between the reading unit and the original in the sub-scanning direction by an amount smaller than the predetermined reading width;
• causing a second relative movement between the reading unit and the original in the main scanning direction;
• and
• varying the amount of the first relative movement in the sub-scanning direction, according to the discriminated reading mode.

A memory medium storing a program, said program comprising:

• reading an image on an original by a reading unit, the reading unit having a predetermined reading width;
• discriminating a reading mode of the reading unit, the reading mode being set according to the reading resolution;
• causing a first relative movement between the reading unit and the original in the sub-scanning direction by an amount smaller than the predetermined reading width;
• causing a second relative movement between the reading unit and the original in the main scanning direction;
• and
• varying the amount of the first relative movement in the sub-scanning direction, according to the discriminated reading mode.