Image recording apparatus with sheet conveyance path
AssigneeBrother Kogyo Kabushiki Kaisha
InventorYuta Uchino
Life of this patent
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Abstract
An image recording apparatus including a recording portion for recording image on a top face of a sheet; a supplying roller which is to be in contact with a bottom face of the sheet held in a tray so as to supply the sheet toward a curved conveyance path, a drive roller which is to be in contact with the top face of the sheet so as to convey the sheet supplied from the supplying roller, and a controlling portion which is configured, upon receipt of a command requesting start of conveyance of the sheet, to cause the supplying roller to be rotated without causing the drive roller to be rotated, and is configured, upon judgment that a leading end portion of the sheet has reached a flat surface extending away from the drive roller toward the recording portion, to cause the drive roller to be rotated.
Claims16
An image recording apparatus comprising:
- a conveyance path definer including outside and inside guide surfaces which are opposed to each other and which cooperate with each other to define therebetween a conveyance path, along which a sheet is to be conveyed in a sheet conveyance direction while one and the other of opposite side faces of the sheet face said outside and inside guide surfaces, respectively, the conveyance path having a curved path section and a straight path section that is located on a downstream side of the curved path section;
- a tray configured to hold a sheet;
- a supplying roller which is to be in contact with the other of the opposite side faces of the sheet held by said tray, and which is configured to supply the sheet from said tray toward the curved path section of the conveyance path;
- a pair of conveying rollers which are located in the curved path section of the conveyance path, and which are configured to convey the sheet supplied from said supplying roller, toward the straight path section of the conveyance path, said pair of conveying rollers including a drive roller and a driven roller, said drive roller being rotatable by a drive force transmitted thereto and disposed on a side of said outside guide surface so as to be brought into contact with the one of the opposite side faces of the sheet, said driven roller being opposed to said drive roller and disposed on a side of said inside guide surface so as to be brought into contact with the other of the opposite side faces of the sheet;
- a recording portion which is located in the straight path section of the conveyance path, and which is disposed on a side of said outside guide surface so as to record image on the one of the opposite side faces of the sheet;
- and
- a controlling portion which is configured to control said supplying roller and said drive roller;
- wherein said outside guide surface includes a sheet supporting portion constituted by a flat surface which faces the curved section and which extends away from said drive roller toward the straight path section,
- said image recording apparatus further comprising:
- a judging portion configured to make judgment relating to a position of a leading end portion of the sheet,
- wherein said controlling portion is configured, upon receipt of a command requesting start of conveyance of the sheet, to cause said supplying roller to be rotated without causing said drive roller to be rotated, and is configured, upon judgment that the leading end portion of the sheet has reached said sheet supporting portion, to cause said drive roller to be rotated.
The image recording apparatus according to claim further comprising:
- a drive source configured to generate a drive force;
- a first transmission mechanism configured to transmit the drive force from said drive source to said supplying roller;
- a second transmission mechanism configured to transmit the drive force from said drive source to said drive roller;
- and
- a transmission selector configured to select one of said first and second transmission mechanisms, for thereby causing the drive force to be transmitted, via the selected one of said first and second transmission mechanisms, to a corresponding one of said supplying roller and said drive roller.
Dependencies are inferred from the claim text.