A sheet conveying device includes a motor, a first gear, a roller, a second gear, a first frame and a second frame. The first gear is attached to the motor. The second gear is attached to the roller, and in meshing engagement with the first gear. The first frame includes a wall having a side surface. The second frame is provided with: a first abutment portion in abutment with the side surface; and a second abutment portion in abutment with the side surface. The second abutment portion is positioned downstream of the first abutment portion in a second direction that is perpendicular to an axial direction of the roller. An abutment position between the second abutment portion and the side surface is positioned downstream in a first direction along the axial direction of the roller of an abutment position between the first abutment portion and the side surface.

A paper feeding device includes a paper feeding roller and a separation roller. The paper feeding roller and the separation roller are arranged in a parallel direction. The paper feeding roller and the separation roller interpose a sheet. The paper feeding device includes a paper feeding roller, a separation roller, a shaft, a holder, and a rotation stopping portion. The paper feeding roller is configured to convey the sheet in a conveyance direction. The separation roller is configured to be pressed against the paper feeding roller. The shaft is configured to rotatably support the separation roller via a torque limiter. The holder is configured to include a supporting portion. The supporting portion is provided with a first guide surface and a second guide surface facing each other and extending in the parallel direction. The rotation stopping portion is configured to be attached to the shaft. The rotation stopping portion is configured to be inserted between the first guide surface and the second guide surface. The rotation stopping portion is configured to include a first sliding surface and a second sliding surface. The first sliding surface faces the first guide surface on the paper feeding roller side of the parallel direction and a downstream side of the conveyance direction with respect to a rotation axis of the separation roller. The second sliding surface faces the second guide surface on an opposite side of the paper feeding roller of the parallel direction and an upstream side of the conveyance direction with respect to the rotation axis of the separation roller.

A medium transport apparatus includes a first roller configured to transport a medium, a second roller configured to transport the medium at a different position, in the transport direction of the medium, from the first roller, the second roller including a rotary shaft parallel to a rotary shaft of the first roller, and a bearing portion configured to contact with both the rotary shaft of the first roller and the rotary shaft of the second roller in an area in an extending direction of the rotary shaft, within which the transported medium passes.

A conveying apparatus includes: a rotation shaft; a conveying roller secured to the rotation shaft; a driven roller that cooperates with the conveying roller to convey a sheet at a nip position; a supporter supporting the rotation shaft rotatably; and a first guide and a second guide opposed to each other and defining a conveyance path guiding the sheet toward the nip position. The first guide and the second guide respectively have first and second guide surfaces defining the conveyance path. The first guide and the second guide respectively have first and second engaging portions engaged with the rotation shaft at positions different from a position of the supporter in the axial direction of the rotation shaft.

A rotating body unit includes a pair of bearing portions and a first engagement portion. A pair of bearing support members support the bearing portions when at support positions, and release the bearing portions when at retraction positions. An auxiliary tool includes a pair of arm portions and a second engagement portion. When the auxiliary tool is engaged with the rotating body unit mounted in the mounting portion, the arm portions abut on and move the bearing support members from the support positions to the retraction positions. The second engagement portion engages with the first engagement portion after the bearing support members move to the retraction positions. As the auxiliary tool is separated from the mounting portion with the second engagement portion engaging with the first engagement portion, the rotating body unit is pulled out of the mounting space integrally with the auxiliary tool.

An automated product dispenser for dispensing a product from a supply of product is provided. The automated product dispenser includes a chassis assembly, a drive assembly, and an isolation member. The chassis assembly includes a chassis frame, and the drive assembly includes a motor, a drivetrain, and a drivetrain housing. The isolation member mounts the drive assembly to the chassis assembly such that the drive assembly is substantially spaced apart from the chassis frame. A related method of inhibiting vibration transmission in an automated product dispenser also is provided.

A spindle mechanism of a winding machine includes a spindle box provided with a mounting hole; bearings respectively arranged at both ends of the mounting hole of the spindle box to form a front bearing and a rear bearing, the bearing comprises an inner ring and an outer ring; and a spindle, the spindle is arranged to pass through the mounting hole of the spindle box and is rotatably positioned on the spindle box by means of the bearings, and the number of the front bearings is the same as the number of the rear bearings, and the outer ring of at least one of the front bearing and the rear bearing is not restricted in an axial direction so as to form a free end.

An automated product dispenser for dispensing a product from a supply of product is provided. The automated product dispenser includes a chassis assembly, a drive assembly, and an isolation member. The chassis assembly includes a chassis frame, and the drive assembly includes a motor, a drivetrain, and a drivetrain housing. The isolation member mounts the drive assembly to the chassis assembly such that the drive assembly is substantially spaced apart from the chassis frame. A related method of inhibiting vibration transmission in an automated product dispenser also is provided.

A sheet conveying device includes a motor, a first gear, a roller, a second gear, a first frame and a second frame. The first gear is attached to the motor. The second gear is attached to the roller, and in meshing engagement with the first gear. The first frame includes a wall having a side surface. The second frame is provided with: a first abutment portion in abutment with the side surface; and a second abutment portion in abutment with the side surface. The second abutment portion is positioned downstream of the first abutment portion in a second direction that is perpendicular to an axial direction of the roller. An abutment position between the second abutment portion and the side surface is positioned downstream in a first direction along the axial direction of the roller of an abutment position between the first abutment portion and the side surface.

A medium transportation device includes a transportation driving roller that transports a medium; a roller unit including a separation roller as a driven roller that is rotated by rotation of the transportation driving roller and a shaft which penetrates a rotation center of the separation roller; a holder that detachably holds the roller unit; and a lock mechanism that switches between an unlocked state in which the roller unit is unlocked from the holder and a locked state in which the roller unit is locked to the holder.