A winding machine for web-type materials, in particular film materials, comprises a feeding device and at least one winding shaft which is capable of being driven and designed to receive a winding core for the winding of the web-type film material, wherein the winding machine is allocated a system for regulating and/or reducing an electrostatic charge of the web-type material during the winding process.

A printing apparatus which appropriately deals with a medium jam occurring on the transportation belt is provided.

A printer as a medium processing apparatus includes a transport path through which a paper being transported passes, a recording head that records on the paper on the transport path, and a platen that forms at least a portion of the transport path as a path forming member with which the paper comes into contact, in which a surface resistance value of the path forming member changes according to an applied voltage of the medium.

A paper feeding device of an embodiment includes a paper feed tray, a blower, and a flow regulating member. A paper bundle in which a plurality of sheets of paper are stacked can be placed on the paper feed tray. The blower is positioned next to the paper bundle placed on the paper feed tray. The blower can generate airflow. The flow regulating member is positioned above the paper bundle placed on the paper feed tray. The airflow from the blower causes the flow regulating member to generate a negative pressure between the flow regulating member and the uppermost sheet of paper of the paper bundle.

A sheet discharging apparatus, including: a discharge portion discharging a sheet in a discharge direction; a sheet supporting portion including a support surface which supports a lower surface of the sheet discharged from the discharge portion; and a conductive portion which is electrically conductive and connected to a ground potential, wherein the conductive portion is provided to the support surface.

A paper feeding device of an embodiment includes a paper feed tray, a blower, and a flow regulating member. A paper bundle in which a plurality of sheets of paper are stacked can be placed on the paper feed tray. The blower is positioned next to the paper bundle placed on the paper feed tray. The blower can generate airflow. The flow regulating member is positioned above the paper bundle placed on the paper feed tray. The airflow from the blower causes the flow regulating member to generate a negative pressure between the flow regulating member and the uppermost sheet of paper of the paper bundle.

A printing device is provided that suppresses occurrence of a transport failure of a medium at a guide unit that guides the medium on which printing has been performed, regardless of a type of the medium. The printing device includes a transport unit configured to transport a medium M in a transport direction Y, a printing unit configured to perform printing on the medium M transported by the transport unit, a guide unit 33 including a guide surface 35 that guides the medium M on which printing has been performed, and a vibration unit 34 configured to vibrate the guide surface 35. The guide surface 35 is formed to be increasingly directed vertically downward while advancing in the transport direction Y.

A sheet discharging device includes a stacking portion configured to stack a sheet; a discharging portion configured to feed the sheet so as to be discharged to the stacking portion, wherein the discharging portion includes a first roller configured to feed the sheet and a second roller provided so as to be contactable to a sheet surface opposite from another sheet surface to which the first roller is contactable to; and an electrically discharging member configured to electrically discharge the sheet in contact with the sheet fed by the discharging portion. As viewed in a widthwise direction perpendicular to a discharging direction of the sheet, the electrically discharging member is provided so as to extend through between rotational axes of the first and second rollers in the discharging direction of the sheet.

An image forming system includes: an image forming apparatus configured to form an image on a recording medium; a post-processing apparatus configured to perform post-processing on the recording medium on which an image is formed by the image forming apparatus; a relay apparatus having a function of changing a transport speed of the recording medium on which an image is formed by the image forming apparatus to a transport speed of the post-processing apparatus and transporting the recording medium to a subsequent stage; and a charge eliminating apparatus configured to perform charge elimination on the recording medium that is charged, by reducing a charge amount of the charged recording medium, and the charge eliminating apparatus is provided at a stage that is after the relay apparatus and before the post-processing apparatus.

A charge eliminating apparatus configured to remove charges from a sheet on which an image is formed by a printing apparatus, includes a charge eliminating roller pair including a first charge eliminating roller and a second charge eliminating roller configured to form a nip portion together with the first charge eliminating roller, the charge eliminating roller pair being configured to remove the charges from the sheet in a state of contacting the sheet at the nip portion, a first setting unit configured to set a value of a voltage applied to the charge eliminating roller pair, and a second setting unit configured to set whether to apply the voltage to the charge eliminating roller pair, wherein the second setting unit is configured to set whether to apply the voltage to the charge eliminating roller pair without changing the value of the voltage set by the first setting unit.