A medium conveyance device including: a conveyance guide that defines a conveyance space through which a paper sheet shaped medium should pass when conveying the medium along a conveyance direction; and an outside region that is a region, out of a guide face forming a boundary face to the conveyance space in the conveyance guide, contacted by an end portion of the medium in an orthogonal direction orthogonal to the conveyance direction, and that guides the end portion of the medium to so as to be positioned inside the conveyance space.

A medium conveyance device including: a conveyance guide that defines a conveyance space through which a paper sheet shaped medium should pass when conveying the medium along a conveyance direction; and an outside region that is a region, out of a guide face forming a boundary face to the conveyance space in the conveyance guide, contacted by an end portion of the medium in an orthogonal direction orthogonal to the conveyance direction, and that guides the end portion of the medium to so as to be positioned inside the conveyance space.

Various embodiments illustrated herein disclose a printing apparatus comprising a media supply spool configured to supply print media along a media path. The printing apparatus further comprises a first media sensor positioned in a first plane in the printing apparatus. Further, the printing apparatus comprises a second media sensor positioned in a second plane in the printing apparatus. Additionally, the printing apparatus comprises a first media guide defining a section of the media path, wherein extremities of the first media guide are positioned to be at a negative offset from the second plane.

A transport device includes a transport member that transports a recording medium while adjusting a leading end of the recording medium, and a guide member that is disposed upstream from the transport member in a transport direction of the transport member to guide the recording medium to the transport member along a transport path, the guide member being rotatable in a direction to open the transport path while having a downstream portion in the transport direction of the transport member serving as an axis.

A conveyance path forming body includes: a first surface that is disposed on an opposite side of a sheet to a processing unit disposed on a side of one surface of the sheet being conveyed along a conveyance path to perform processing on the one surface; and a second surface that is disposed at a downstream of the first surface in a conveying direction of the sheet so as to be more distant from the processing unit than a hypothetical extension surface of the first surface.

A conveyance path forming body includes: a first surface that is disposed on an opposite side of a sheet to a processing unit disposed on a side of one surface of the sheet being conveyed along a conveyance path to perform processing on the one surface; and a second surface that is disposed at a downstream of the first surface in a conveying direction of the sheet so as to be more distant from the processing unit than a hypothetical extension surface of the first surface.

A transport guide device includes: a first guide unit including a guide portion configured to guide a sheet-shaped object along a transport path; and a second guide unit including a fixed first end portion and a non-fixed second end portion opposite to the fixed first end portion, the second end portion (i) approaching the guide portion toward a downstream side in a transport direction of the sheet-shaped object and then contacts with the guide portion or (ii) approaching the guide portion toward the downstream side in the transport direction of the sheet-shaped object, the second guide unit being configured to guide the sheet-shaped object such that the sheet-shaped object comes into contact with the guide portion, in which the second guide unit includes a tip end protrusion at a tip end of the second end portion, the tip end protrusion protruding in a direction away from the guide portion.

A sheet conveyor, including: a shaft defining an axis that extends in a first direction; an arm pivotable about the axis; a supply roller provided on the arm and configured to supply a sheet; a first frame formed of metal and supporting the shaft; a first conveyance roller configured to covey the sheet supplied from the supply roller; and a second frame formed of metal and supporting the first conveyance roller, wherein the second frame includes (a) a contact plate portion shaped like a plate and having a contact surface that is held in contact with the first frame and (b) a wall portion extending from the contact plate portion in a direction intersecting the contact surface, and wherein the second frame is coupled at the contact plate portion thereof to the first frame.

A sheet conveyor includes: a housing defining a conveyance path and a first side surface having an opening; a cover; a shaft defining a pivot axis of the cover and inserted in an elongated hole; and a limiter provided at the housing and having a contact surface that contacts the cover pivoted from a standing position to a lower position. The contact surface has a first end and a second end that is nearer to the conveyance path than the first end. The contact surface is inclined with respect to a horizontal direction such that the first end is located below the second end. The elongated hole permits the cover to move in such a direction that a pivoting distal end of the cover moves away from the opening, with the cover being in contact with the contact surface.

A printing apparatus, including a sheet conveyer unit with a first roller unit, a printer unit, and a controller, is provided. The controller executes a first-face printing process, wherein an image is printed on a first face of a sheet; a switchback process, wherein the sheet after the first-face printing process is conveyed in a reverse direction by the first roller unit; a second-face printing process, wherein the image is printed on a second face of the sheet; a first ink amount determining process to determine whether an ink amount discharged in the first-face printing process at an end area of the sheet is one of greater than and equal to a first threshold amount; and a switchback setting process, wherein, if the ink amount is smaller than the first threshold amount, a rotation speed of the first roller unit is set at a higher rotation speed.