Reading kit and image reading apparatus

An image reading apparatus, comprising:

• an original tray on which an original is to be stacked;
• a conveyor configured to convey the original one by one from the original tray to a delivery tray along a conveyance path;
• a reading unit configured to read an image from the original being conveyed along the conveyance path;
• a white reference member arranged on a side opposite to the reading unit across the conveyance path and arranged at a position farther from the reading unit than a reading position of the original to be used by the reading unit;
• a positioning member;
• a white reference sheet comprising a white reference portion to be read by the reading unit and an engaged portion to be engaged with the positioning member, the white reference portion being arranged at the reading position by engaging the engaged portion with the positioning member;
• and
• a controller configured to conduct shading correction on a result of reading the original based on a first reading result of the white reference member and a second reading result of the white reference portion, which are obtained by the reading unit.

A white reference sheet member which is to be attached to an image reading apparatus, the image reading apparatus including a conveying unit configured to convey a document along a top surface of a transparent member, a reading device configured to read an image of the document conveyed by the conveying unit, a first white reference portion configured to be read by the reading device and disposed on a side opposite to the reading device across the transparent member, and a controller configured to conduct shading correction based on a result of reading the first white reference portion by the reading device,

• the white reference sheet member comprising:
• a second white reference portion configured to be read by the reading device;
• and
• a positioning portion configured to position the second white reference portion such that the second white reference portion is positioned at a position to be read by the reading device and at a side opposite to the first white reference portion across the transparent member.

An image reading apparatus to which a white reference sheet member is to be attached, the image reading apparatus including a conveying unit configured to convey a document along a top surface of a transparent member, a reading device configured to read an image of the document conveyed by the conveying unit, and a first white reference portion configured to be read by the reading device and disposed on a side opposite to the reading device across the transparent member, the white reference sheet member including a second white reference portion configured to be read by the reading device and a positioning portion configured to position the second white reference portion such that the second white reference portion is positioned at a position to be read by the reading device and at a side opposite to the first white reference portion across the transparent member,

• the image reading apparatus comprising:
• a memory in which information is stored, wherein the information represents relationship between 1) a result of reading the first white reference portion by the reading device and 2) a result of reading the second white reference portion by the reading device with the white reference sheet member attached to the image reading apparatus;
• and
• a controller configured to conduct shading correction based on the information stored in the memory.