Image reading apparatus

An image reading apparatus, comprising:

• a conveying roller that comes in contact with a sheet medium and causes a conveying force to convey the sheet medium in a conveying direction to act on the sheet medium contacting the conveying roller;
• an imaging unit that captures an image of the sheet medium that has been conveyed;
• a guide plate that is provided upstream of the imaging unit in the conveying direction, forms a part of a conveying path through which the sheet medium is conveyed, and includes a plurality of slits along a main-scanning direction perpendicular to the conveying direction;
• a chargeable charging member provided upstream of the imaging unit in the conveying direction, arranged separate, via the plurality of slits, from the sheet medium being conveyed, and charged at least when the sheet medium is being conveyed by the conveying roller;
• and
• a dust collection box disposed on a same side as the charging member with respect to the guide plate and accommodating the charging member, wherein
• the charging member is discharged when the sheet medium is not conveyed by the conveying roller,
• the dust collection box includes a chargeable attracting member inside the dust collection box, and
• the attracting member is discharged when the sheet medium is conveyed by the conveying roller, and is charged when the sheet medium is not conveyed by the conveying roller.

An image reading apparatus, comprising:

• a conveying roller that comes in contact with a sheet medium and causes a conveying force to convey the sheet medium in a conveying direction to act on the sheet medium contacting the conveying roller;
• an imaging unit that captures an image of the sheet medium that has been conveyed;
• a guide plate that is provided upstream of the imaging unit in the conveying direction, forms a part of a conveying path through which the sheet medium is conveyed, and includes a plurality of slits along a main-scanning direction perpendicular to the conveying direction;
• and
• a chargeable charging member provided upstream of the imaging unit in the conveying direction, arranged separate, via the plurality of slits, from the sheet medium being conveyed, and charged at least when the sheet medium is being conveyed by the conveying roller;
• and
• a driving unit that rotates the charging member, wherein when the conveyance of the sheet medium by the conveying roller is stopped, the driving unit rotates, before the charging member is discharged, the charging member such that at least a portion of a part of the charging member in an attraction region that faces the sheet medium that has been conveyed via the plurality of slits does not face the sheet medium that has been conveyed via the slits.