A sheet conveyance apparatus includes a control unit for executing a stop process of stopping a second sheet in a state in which the second sheet is nipped by a second conveyance portion, and a conveyance restart process of restarting conveyance of the second sheet stopped by the second conveyance portion. The control unit has a first mode in which the conveyance restart process is performed at a first timing at which a first time has elapsed since a first sheet has passed a reference position, and a second mode in which the conveyance restart process is performed at a second timing at which a second time longer than the first time has elapsed since the first sheet has passed the reference position.

An image forming apparatus includes a printing engine to form an image on a printing medium, and a printing medium feeding device to supply the printing medium to the printing engine using a roller rotating in a feeding direction, and the printing medium feeding device includes a sensor to sense printing medium, and a cleaner to be driven by a reverse rotational force of the roller in a reverse direction to the feeding direction, to clean the sensing portion surface of the sensor.

A sheet conveyance device includes a conveyance roller pair to convey a sheet, a skew correction roller pair to correct a skew of the sheet in a state in which the skew correction roller pair is being stopped, first and second conveyance guides, and a protrusion. The first conveyance guide includes a bend contact portion to come into contact with a portion forming a bend on the first surface of the sheet. The second conveyance guides the sheet. The protrusion is disposed between the skew correction roller pair and the bend contact portion to come into contact with the first surface of the sheet. The protrusion protrudes toward the second conveyance guide from the first conveyance guide in a manner as to intersect with a straight line connecting two nip portions and the bend contact portion in a cross section perpendicular to a width direction.

The present invention provides an adaptive control system to control a plant using direct output feedback in which a function of the full plant state, as opposed to estimates thereof, is used for feedback control of the plant. The adaptive control system of this invention is therefore highly useful in the control of plants, particularly plants for controlling the physical properties of rolls of web material and more particularly a calendering apparatus. Accordingly, in a particularly preferred embodiment the adaptive control system of this invention controls loading of a calender apparatus, such as a pair of opposed rolls forming a calendering stack, based upon the physical properties of a previously processed web.

A method, apparatus and program product may utilize packaging material quality compensation to sense changes in certain characteristics of a packaging material that can be associated with increased risks of film breaks, and automatically make certain changes in machine settings to mitigate the impact of those enhanced risks.

A sheet conveyance apparatus includes a control unit configured to execute a stop process of stopping a second sheet in a state in which the second sheet is nipped by a second conveyance portion, and a conveyance restart process of restarting conveyance of the second sheet stopped by the second conveyance portion. The control unit has a first mode in which the conveyance restart process is performed at a first timing at which a first time has elapsed since a first sheet has passed a reference position, and a second mode in which the conveyance restart process is performed at a second timing at which a second time longer than the first time has elapsed since the first sheet has passed the reference position.

A sheet conveyance device includes a conveyance roller pair to convey a sheet, a skew correction roller pair to correct a skew of the sheet in a state in which the skew correction roller pair is being stopped, first and second conveyance guides, and a protrusion. The first conveyance guide includes a bend contact portion to come into contact with a portion forming a bend on the first surface of the sheet. The second conveyance guides the sheet. The protrusion is disposed between the skew correction roller pair and the bend contact portion to come into contact with the first surface of the sheet. The protrusion protrudes toward the second conveyance guide from the first conveyance guide in a manner as to intersect with a straight line connecting two nip portions and the bend contact portion in a cross section perpendicular to a width direction.

To carry out accurate defect inspection over a wide area, a defect inspection device (1) includes: a radiation source section (2) configured to emit an electromagnetic wave (4) to a separator roll (10); and a sensor section (3) configured to detect the electromagnetic wave (4) that the radiation source section (2) has emitted to the separator roll (10), the sensor section (3) being configured to detect the electromagnetic wave (4) before and after the separator roll is moved relative to the radiation source section (2).

A liquid discharge apparatus is provided that includes a transport unit configured to transport a medium, a discharge unit configured to discharge a liquid onto the medium, a housing including therein the discharge unit, a humidifying unit configured to humidify an interior of the housing, and a humidity detection unit configured to detect a humidity. When the humidity detection unit detected a humidity less than a lower limit value (one example of a first predetermined value) (positive determination in step S12), the interior of the housing is humidified by the humidifying unit during transport by the transport unit or during discharge by the discharge unit (step S16).

According to one embodiment, a paper sheet processing apparatus includes a conveyance device with a conveyor belt, and an inspection device configured to inspect a paper sheet conveyed by the conveyor belt. The inspection device includes an image detection device configured to capture an image of the paper sheet and the conveyor belt and obtain an image of the paper sheet and the conveyor belt, an image processing device configured to detect a degradation level of the conveyor belt based on an belt image of the conveyor belt, and a controller configured to transmit information encouraging replacement of the conveyor belt to a monitor.