An image processing apparatus includes: a casing that includes a plurality of peripheries and a plurality of corners connecting mutually adjacent peripheries; and a first antenna and a second antenna that are attached on the casing, wherein the first antenna and the second antenna are arranged at a first corner closest to the first antenna and at a second corner closest to the second antenna, respectively, and the mutually adjacent peripheries forming the first corner and the mutually adjacent peripheries forming the second corner are mutually different.

An image processing apparatus includes: a casing that includes a plurality of peripheries and a plurality of corners connecting mutually adjacent peripheries; and a first antenna and a second antenna that are attached on the casing, wherein the first antenna and the second antenna are arranged at a first corner closest to the first antenna and at a second corner closest to the second antenna, respectively, and the mutually adjacent peripheries forming the first corner and the mutually adjacent peripheries forming the second corner are mutually different.

A printing apparatus includes a guide unit provided with a guide surface configured to guide a medium by coming into contact with the medium on which printing has been performed, and a heating unit disposed to face the guide surface with a space therebetween. The heating unit includes a first opening portion that opens toward the guide surface on an upstream side in a transport direction, a second opening portion that opens toward the guide surface on a downstream side in the transport direction, a duct connecting the first opening portion and the second opening portion, and a first blowing unit disposed inside the duct. The printing apparatus switches a direction of airflow produced in a heating region in response to a switching of a blowing direction of the first blowing unit.

A driving transmission device includes a storage part, a fixing pin and a supporting part. The storage part has a through hole. The fixing pin rotatably supports a gear. To the supporting part, the fixing pin is fixed. A hole side chamfered portion is formed at an outside opening edge of the through hole. A shaft side chamfered portion is formed at the tip end portion of the fixing pin. A lubricant is applied to a contact area between the fixing pin and the through hole. A hole side boundary portion between an inner circumferential surface of the through hole and the hole side chamfered portion is in contact with an outer circumferential surface of the fixing pin. A shaft side boundary portion between an outer circumferential surface of the fixing pin and the shaft side chamfered portion faces the hole side chamfered portion with a gap.

A sheet characteristic detection device includes: a detector that is disposed on a sheet ejection path through which a sheet is ejected and that detects an electrical resistance value of the sheet; and a charge neutralizer that is disposed on a downstream side of the detector on the sheet ejection path and that neutralizes electric charge on the sheet.

An image forming system includes an image forming apparatus and a feeding device, the image forming apparatus including an image forming unit, a housing, an opening/closing door openable and closable between a first closed position and a first open position, and a support unit openable and closable between a second closed position and a second open position and configured to support a sheet when the support unit is at the second open position, the feeding device being movable in a direction horizontal to the image forming apparatus, configured to move to a coupled position and a decoupled position and feed the sheet to the image forming apparatus when the feeding device is at the coupled position, wherein when the feeding device is at the decoupled position and the opening/closing door is at the first open position, the feeding device overlaps the support unit as viewed from a first direction.

An image forming system includes an image forming apparatus and a feeding device, the image forming apparatus including an image forming unit, a housing, an opening/closing door openable and closable between a first closed position and a first open position, and a support unit openable and closable between a second closed position and a second open position and configured to support a sheet when the support unit is at the second open position, the feeding device being movable in a direction horizontal to the image forming apparatus, configured to move to a coupled position and a decoupled position and feed the sheet to the image forming apparatus when the feeding device is at the coupled position, wherein when the feeding device is at the decoupled position and the opening/closing door is at the first open position, the feeding device overlaps the support unit as viewed from a first direction.