Abstract: An image formation apparatus according to one or more embodiments may include: an apparatus main body that includes an image formation section configured to form an image on a medium; a fixation device that includes a fixation member configured to heat the medium and is attachable to the apparatus main body in a first direction; and a temperature detector including a lens, provided in the apparatus main body, and configured to detect a temperature of the fixation member through the lens. An optical axis of the lens is inclined with respect to the first direction.

Abstract: An image formation apparatus according to one or more embodiments may include: an apparatus main body that includes an image formation section configured to form an image on a medium; a fixation device that includes a fixation member configured to heat the medium and is attachable to the apparatus main body in a first direction; and a temperature detector including a lens, provided in the apparatus main body, and configured to detect a temperature of the fixation member through the lens. An optical axis of the lens is inclined with respect to the first direction.

Abstract: A medium cutting device cutting a continuous medium carried along a carrying path in a carrying direction includes a sandwiching part that is provided capable of sandwiching a medium; and a cutting blade that includes an edge extending in a width direction (X) of the medium, which is perpendicular to the carrying direction, wherein the medium is cut by the edge while the medium is sandwiched and held by the sandwiching part. Wherein the edge is in a shape depicting an involute curve in which path lengths (PL) of the medium, which are determined from the sandwiching part to the edge in the carrying direction, are substantially constant over the edge in the width direction.

Abstract: A sheet medium conveying device conveys a sheet medium in which position detection marks are provided at regular intervals in a medium conveying direction in which the sheet medium is conveyed. The sheet medium conveying device includes a controller that controls conveyance of the sheet medium. The controller selects one of a first standby position and a second standby position located downstream of the first standby position in the medium conveying direction, and conveys the sheet medium to the selected standby position and puts the sheet medium on standby.

Abstract: A sheet medium conveying device conveys a sheet medium in which position detection marks are provided at regular intervals in a medium conveying direction in which the sheet medium is conveyed. The sheet medium conveying device includes a controller that controls conveyance of the sheet medium. The controller selects one of a first standby position and a second standby position located downstream of the first standby position in the medium conveying direction, and conveys the sheet medium to the selected standby position and puts the sheet medium on standby.

Abstract: A medium cutting device cutting a continuous medium carried along a carrying path in a carrying direction includes a sandwiching part that is provided capable of sandwiching a medium; and a cutting blade that includes an edge extending in a width direction (X) of the medium, which is perpendicular to the carrying direction, wherein the medium is cut by the edge while the medium is sandwiched and held by the sandwiching part. Wherein the edge is in a shape depicting an involute curve in which path lengths (PL) of the medium, which are determined from the sandwiching part to the edge in the carrying direction, are substantially constant over the edge in the width direction.

Abstract: A medium cutting device for cutting a continuous medium includes a sandwiching part to sandwich the medium wherein the medium is sandwiched at a sandwiching spot, a cutting blade provided with an edge at its tip for cutting the medium, and a contact part including a convex contact surface that is positioned on an opposite side from the sandwiching part with respect to the edge such that the contact surface is configured to contact the medium when the medium is pulled toward the contact part wherein a spot on the contact surface of which a tangent line passes through the sandwiching spot is defined as a first contact spot (X1). Wherein when an imaginary straight line that connects the sandwiching spot and the first contact spot is defined as a first tangent line (TL1), at least a portion of the edge is positioned on a side at which the contact part is present with respect to the first tangent line.

Abstract: A medium carrying device that carries a medium includes a first roller, a second roller, a rotation transmitting part that drives its rotation by a driving force transmitted from a driving force source, and moves between at a transmitting position and at a releasing position, at the transmitting position, the rotation transmitting part transmits the driving force to the first roller, at the releasing position, the rotation transmitting part does not transmit the driving force, a transmission releasing part that is connected to the rotation transmitting part. When the medium is bowed between the first and second rollers, the transmission releasing part moves the rotation transmitting part from the transmitting position to the releasing position according to the bowing of the medium.

Abstract: A sheet containing device of the invention includes a sheet containing unit for containing a sheet, a regulation member arranged movably in a prescribed moving direction for regulating a position of the sheet contained in the sheet containing unit, a first engaging portion provided at the regulation member, and a first engaged portion provided at the sheet containing unit for holding the regulation member at plural holding positions by engaging the first engaging portion. One of the first engaging and engaged portions has plural engagement grooves arranged with first intervals, and the other of the first engaging and engaged portions has plural engagement projections arranged with second intervals engageable with the plural engagement grooves. An interval of the plural holding positions is equal to the first interval whereas the second interval is an integral multiplication equal to or greater than two of the first interval.

Abstract: A medium carrying device that carries a medium includes a first roller, a second roller, a rotation transmitting part that drives its rotation by a driving force transmitted from a driving force source, and moves between at a transmitting position and at a releasing position, at the transmitting position, the rotation transmitting part transmits the driving force to the first roller, at the releasing position, the rotation transmitting part does not transmit the driving force, a transmission releasing part that is connected to the rotation transmitting part. When the medium is bowed between the first and second rollers, the transmission releasing part moves the rotation transmitting part from the transmitting position to the releasing position according to the bowing of the medium.

Abstract: A sheet containing device of the invention includes a sheet containing unit for containing a sheet, a regulation member arranged movably in a prescribed moving direction for regulating a position of the sheet contained in the sheet containing unit, a first engaging portion provided at the regulation member, and a first engaged portion provided at the sheet containing unit for holding the regulation member at plural holding positions by engaging the first engaging portion. One of the first engaging and engaged portions has plural engagement grooves arranged with first intervals, and the other of the first engaging and engaged portions has plural engagement projections arranged with second intervals engageable with the plural engagement grooves. An interval of the plural holding positions is equal to the first interval whereas the second interval is an integral multiplication equal to or greater than two of the first interval.

Abstract: An image forming apparatus includes an engagement member provided on a sheet supply cassette, a biasing member with a first part, a second part and an elastic part formed of elastic material. The first and second parts are linked with the elastic part. The second part is supported to a apparatus main body with a swing shaft. The first part engaging with the engagement member so that the biasing member maintains a compressed state by the engagement member, and a guide restriction member provided on the apparatus main body restrict a movement of the first part.

Abstract: An image forming apparatus includes an engagement member provided on a sheet supply cassette, a biasing member with a first part, a second part and an elastic part formed of elastic material. The first and second parts are linked with the elastic part. The second part is supported to a apparatus main body with a swing shaft. The first part engaging with the engagement member so that the biasing member maintains a compressed state by the engagement member, and a guide restriction member provided on the apparatus main body restrict a movement of the first part.