Patent ID: 7341339
Filing Date: 2008-03-11
Classification: B41J

Abstract:
1. A tray transferring controller of a recording apparatus, comprising: a transfer roller unit comprising: a driving transfer roller rotatably driven for transferring a tray to a recording head by rotating, said driving transfer roller also is rotatable by friction between said tray and said driving transfer roller caused by application by an external force on the tray; and a driven transfer roller driven and rotated being pressed and in contact with said driving transfer roller; a transfer motor connecting to said driving transfer roller; and an assist controller coupled to an input of said transfer motor, said assist controller generating a first current value and outputting said first current value to said transfer motor, when said tray is in a stillness state, to generate a first rotation torque on said driving transfer roller, said first rotation torque is smaller than a load torque that is required to rotate said driving transfer roller in said stillness state of said tray, wherein said driving transfer roller rotates due to a resultant force of said first rotation torque and a second rotation torque, said second rotation torque being applied to said driving transfer roller through the friction between said tray and said driving transfer roller by applying an external force to said tray being in a stillness state, said resultant force being larger than said load torque.