B41J13/03

SHEET CONVEYING DEVICE AND INKJET RECORDING APPARATUS
20210107305 · 2021-04-15 ·

A sheet conveying device includes a conveying roller configured to convey a sheet and a plurality of driven rotating units. The conveying roller includes a plurality of roller portions disposed at positions opposite to the driven rotating units. Each of the roller portions has three or more annular grooves arranged side by side. Each of the driven rotating units includes three or more driven rotating bodies that are disposed at positions opposite to the annular grooves, respectively. A plurality of convex portions and a plurality of concave portions are alternately provided on an outer edge of each of the driven rotating bodies. The driven rotating bodies include two first rotating bodies positioned at both ends and one or more second rotating bodies located between the first rotating bodies and having an outer diameter smaller than the outer diameter of the first rotating bodies.

IMAGE-FORMING APPARATUS HAVING ELECTROMAGNETIC CLUTCH FOR TRANSMITTING DRIVE FORCE OF MOTOR TO CONVEYING ROLLER
20210130117 · 2021-05-06 · ·

In an image-forming apparatus, when a sheet length of a first sheet is shorter than or equal to a predetermined length, a controller supplies power to an electromagnetic clutch to convey the first sheet and a second sheet so that a sheet gap of the second sheet is equivalent to a first gap. When the sheet length of the first sheet is longer than the predetermined length, the controller supplies power to the electromagnetic clutch to successively convey a first number of sheets so that the sheet gap of each of the first number of sheets is equivalent to the first gap. After the first number of sheets has been conveyed, the controller supplies power to the electromagnetic clutch to convey at least one sheet so that the sheet gap of each of the at least one sheet is equivalent to a second gap greater than the first gap.

IMAGE-FORMING APPARATUS HAVING ELECTROMAGNETIC CLUTCH FOR TRANSMITTING DRIVE FORCE OF MOTOR TO CONVEYING ROLLER
20210130117 · 2021-05-06 · ·

In an image-forming apparatus, when a sheet length of a first sheet is shorter than or equal to a predetermined length, a controller supplies power to an electromagnetic clutch to convey the first sheet and a second sheet so that a sheet gap of the second sheet is equivalent to a first gap. When the sheet length of the first sheet is longer than the predetermined length, the controller supplies power to the electromagnetic clutch to successively convey a first number of sheets so that the sheet gap of each of the first number of sheets is equivalent to the first gap. After the first number of sheets has been conveyed, the controller supplies power to the electromagnetic clutch to convey at least one sheet so that the sheet gap of each of the at least one sheet is equivalent to a second gap greater than the first gap.

Image Recording Apparatus
20210060981 · 2021-03-04 ·

An image recording apparatus includes a recording section which is provided over a transport passage for transporting a sheet in a transport direction and which has nozzles for discharging an ink onto the sheet; a platen which is provided under the recording section with the transport passage intervening therebetween and which has a plurality of ribs provided to support the sheet while being separated from each other in a widthwise direction of the transport passage perpendicular to the transport direction, the respective ribs protruding upwardly and extending in the transport direction; and a plurality of holding members which are provided to be positioned between the plurality of ribs in the widthwise direction of the transport passage over the platen on an upstream side in the transport direction from the nozzles and which abut against an upper surface of the sheet and press the sheet toward the platen.

Image Recording Apparatus
20210060981 · 2021-03-04 ·

An image recording apparatus includes a recording section which is provided over a transport passage for transporting a sheet in a transport direction and which has nozzles for discharging an ink onto the sheet; a platen which is provided under the recording section with the transport passage intervening therebetween and which has a plurality of ribs provided to support the sheet while being separated from each other in a widthwise direction of the transport passage perpendicular to the transport direction, the respective ribs protruding upwardly and extending in the transport direction; and a plurality of holding members which are provided to be positioned between the plurality of ribs in the widthwise direction of the transport passage over the platen on an upstream side in the transport direction from the nozzles and which abut against an upper surface of the sheet and press the sheet toward the platen.

Recording apparatus

A recording apparatus including a motor mounting frame in which, in an attached state, a drive shaft of a motor is projected to a front side with respect to a frame surface on the front side, and in the attached state, while a frame surface on a rear side and the motor oppose each other, the motor is attached to the motor mounting frame. The recording apparatus includes a frame attaching portion to which the motor mounting frame is attached. In the attached state, at least a portion of a fastening member that fixes the frame attaching portion is exposed when viewing the frame surface on the front side from the front, and the fastening member is at an attachable/detachable position.

Recording apparatus

A recording apparatus including a motor mounting frame in which, in an attached state, a drive shaft of a motor is projected to a front side with respect to a frame surface on the front side, and in the attached state, while a frame surface on a rear side and the motor oppose each other, the motor is attached to the motor mounting frame. The recording apparatus includes a frame attaching portion to which the motor mounting frame is attached. In the attached state, at least a portion of a fastening member that fixes the frame attaching portion is exposed when viewing the frame surface on the front side from the front, and the fastening member is at an attachable/detachable position.

Velocity and torque based media motor control

In some examples, velocity and torque based media motor control may include ascertaining a velocity and torque for a feed roller motor associated with a feed roller, and ascertaining a velocity and torque for a drive roller motor associated with a drive roller that is to receive media from the feed roller. Further, velocity and torque based media motor control may include determining whether the torque for the drive roller motor is greater than a torque target. In response to a determination that the torque for the drive roller motor is greater than the torque target, the torque for the drive roller motor may be reduced to the torque target, and the torque for the drive roller motor may be maintained at the torque target.

Velocity and torque based media motor control

In some examples, velocity and torque based media motor control may include ascertaining a velocity and torque for a feed roller motor associated with a feed roller, and ascertaining a velocity and torque for a drive roller motor associated with a drive roller that is to receive media from the feed roller. Further, velocity and torque based media motor control may include determining whether the torque for the drive roller motor is greater than a torque target. In response to a determination that the torque for the drive roller motor is greater than the torque target, the torque for the drive roller motor may be reduced to the torque target, and the torque for the drive roller motor may be maintained at the torque target.

PRINTING APPARATUS AND CONTROL METHOD
20210060977 · 2021-03-04 ·

A printing apparatus includes a conveyance unit configured to convey a sheet along a conveyance path, a printing unit configured to print an image by discharging ink to the sheet conveyed by the conveyance unit, a first heating unit configured to, in a heating section on the conveyance path, heat the sheet on which the image has been printed by the printing unit, and a control unit configured to control the first heating unit so that the heating section is changed in accordance with a print condition.