Moisture removal apparatus and method of image read out apparatus

An image read-out apparatus comprising:

• a contact image sensor (CIS) including a document glass;
• a pressing roller to transfer a document over a surface of the document glass;
• and
• a moisture removal unit to determine an ambient condition in or around the CIS that affect a moisture level on the document glass and to apply a predetermined amount of heat for a predetermined amount of time to the document glass based on the determined moisture level.

An image read-out apparatus comprising:

• a contact image sensor (CIS) including a document glass to place a document thereon and an image read-out unit to read out an image from the document;
• a pressing roller to transfer the document with respect to the document glass;
• and
• a heating unit disposed in the pressing roller to heat the document glass to remove moisture therefrom.

A moisture removal method of an image read-out apparatus, the method comprising:

• sensing whether a document is fed into a document feeder;
• sensing a relative humidity at a top surface of a document glass of a contact image sensor (CIS) upon a positive determination that the document is fed into a document feeder;
• determining driving conditions of a heater to heat the document glass according to the sensed humidity;
• and
• driving the heater according to the driving conditions to remove the moisture.

A moisture removal method of an image read-out apparatus, the method comprising:

• sensing whether a document is fed into a document feeder;
• sensing a room temperature in the image read-out apparatus upon a positive determination that the document is fed into a document feeder;
• determining driving conditions of a heater to heat a document glass of a contact image sensor (CIS) according to the sensed room temperature;
• and
• driving the heater according to the driving conditions to remove the moisture.

A moisture removal method for an image read-out apparatus, the method comprising:

• sensing whether a document is fed into a document feeder;
• sensing a surface temperature of a document glass of a contact image sensor (CIS) upon a positive determination that the document is, fed into, a document feeder;
• driving a heater until the heater reaches a predetermined target temperature corresponding to the sensed temperature;
• and
• determining whether the heater reaches the target temperature.