A roll sheet, in which a continuous sheet is wound in a roll form, is caused to rotate in a forward direction to supply the sheet to a printing unit. First and second sensors are arranged at positions facing an outer circumferential surface of the roll sheet and deviated in an axis line direction of the roll sheet. Outputs of the first and second sensors are changed in accordance with a distance to a sheet of the roll sheet. A rotation direction of the roll sheet is switched from a forward direction to a reverse direction on the basis of the outputs of the first and second sensors while the roll sheet is being rotated in the reverse direction.

The unloading operation of winding the carrier tape on the component supply reel by driving the component supply reel to extract the component supply reel from the tape feeder is performed. That is, the carrier tape removed from the tape feeder is wound on the component supply reel. Thus, it is possible to suppress the interference of the preceding tape removed from the tape feeder with the succeeding tape.

A sheet supplying apparatus, which is capable of winding a sheet tightly, includes a driving unit configured to cause a roll including a wound consecutive sheet to rotate in a first direction for feeding the sheet or a second direction opposite to the first direction, a sensor that detects a leading end portion of the sheet separated from an outer circumferential surface of the roll, and a contact body that presses the outer circumferential surface. Before the sheet is fed, in a state in which the contact body presses the outer circumferential surface, the driving unit causes the roll to continuously rotate in the second direction until a detection cycle of the leading end portion by the sensor is less than a predetermined value.

An unwinding assembly comprising first and second unwinding and handling units comprising respective robots having respective wrists movable under the control of at least one electronic control unit, wherein each of said unwinding and handling units comprises a respective unwinding device mounted on the wrist of the respective robot. The present invention also relates to an unwinding and handling unit capable of handling the reel carried by it with high freedom of movement, while maintaining small dimensions.

A roll sheet, in which a continuous sheet is wound in a roll form, is caused to rotate in a forward direction to supply the sheet to a printing unit. First and second sensors are arranged at positions facing an outer circumferential surface of the roll sheet and deviated in an axis line direction of the roll sheet. Outputs of the first and second sensors are changed in accordance with a distance to a sheet of the roll sheet. A rotation direction of the roll sheet is switched from a forward direction to a reverse direction on the basis of the outputs of the first and second sensors while the roll sheet is being rotated in the reverse direction.

Tape feeder holding device includes slide section on which a tape feeder can be slid, the tape feeder supplying electronic components by feeding tape housing the electronic components in a tape feeding direction; and sliding device configured to slide the tape feeder held in the slide section in the tape feeding direction, the sliding device being capable of sliding the tape feeder to a supply position at which the electronic components can be supplied from the tape feeder. That is, with the tape feeder holding device, a tape feeder is automatically attached to the tape feeder holding device.

A strapping material dispenser may include a housing having a hinged door. A roll of strapping material may be received within the housing and fed into contact with an advancing wheel. A portion of the advancing wheel may extend outside the housing to be contacted by a user. Rotation of the advancing wheel dispenses strapping material from the dispenser. A cutting mechanism may be arranged within the housing to cut the strapping material once the desired length has been dispensed from the dispenser. A motor and digital control circuit may be provided to electronically control the advancing wheel and therefore the dispensing of material from the dispenser.

A printing apparatus includes first and second supplying portions, a printer, and a winding unit. The first supplying portion can supply a recording medium on a conveyance route to the printer for first surface printing. The winding unit then rotates in a first direction to wind the printed recording medium. A wound recording medium edge is located at a specific location and then guided to a conveyance route opening portion if the wind direction is a second direction. After the edge is at the specific location, the recording medium is supplied through the opening portion to the printer for second surface printing. If the second supplying portion supplies the recording medium for first surface printing, then it supplies the medium for second surface printing. If a user sets a wound-in-advance recording medium to the second supplying portion, the second supplying portion supplies the set recording medium to the printer.

A printing apparatus provided with a transportation mechanism for a printing medium includes: a storage configured to store a machine-learned model that outputs a setting value of the transportation mechanism for causing, based on state variables including a print length as a length of a print product printed on the printing medium, the print length to be close to a reference; and a processor configured to perform printing by controlling the transportation mechanism in accordance with the setting value acquired based on the machine-learned model.

The present invention relates to a method for manufacturing an aerogel sheet and comprises: a step (a) of impregnating an acid solution into a fiber sheet to clean the fiber sheet by using the acid solution and impregnating a binder solution into the fiber sheet that is cleaned by using the acid solution to manufacture a pre-processed fiber sheet; a step (b) of impregnating a silica precursor into the pre-processed fiber sheet; and a step (c) of a gelling catalyst into the fiber sheet into which the silica precursor is impregnated to gelate the silica precursor.