Apparatus for feeding documents in a facsimile

An apparatus for feeding documents in a facsimile, comprising:

• a pickup roller for picking up documents;
• a read module disposed adjacent to said pickup roller to read the document fed from said pickup roller;
• a white roller disposed to face said read module and feeding the document to pass through said read module;
• a discharge roller disposed adjacent to said white roller to discharge the document outside said apparatus after the document is passed through said white roller and said read module;
• a driving unit;
• a power transmission mechanism selectively driven by said driving unit to connect said driving unit either only to said pickup roller and said discharge roller except said white roller, or to all of said pickup roller, said white roller and said discharge roller simultaneously;
• and
• a controller coupled to said driving unit for controlling said driving unit to allow said power transmission mechanism to connected either only to said pickup roller and discharge roller or all of said pickup roller, said white roller, and said discharge roller.

A sheet feeding apparatus, comprising:

• a pickup roller for picking-up a sheet from a cassette;
• a white roller disposed to receive the sheet picked up by said pickup roller, feeding the sheet along a path;
• a reading module disposed to face said white roller, reading the sheet while said white roller feeds the sheet along said path formed between said reading module and said white roller;
• a driving unit having a rotation power source;
• and
• a transmission mechanism disposed between said driving unit and one of said pickup roller and said white roller to selectively couple said driving unit to one of said pickup roller and said white roller.

A process in a document feeding apparatus, comprising the steps of:

• providing a pickup roller for picking-up a document from a cassette, a white roller disposed to receive the document picked up by said pickup roller and to feed the document along the path, and a reading module disposed to face said white roller and to read sheet while said document is fed along said path formed between said reading module and said white roller;
• providing a driving unit having a rotational power source;
• connecting said driving unit to said pickup roller when said document is picked-up;
• and
• connecting said driving unit to said pickup roller and said white roller after said document is picked up by said pickup roller.