A cleaning unit includes a cleaning head that moves a cleaning member, which cleans the screen mask at the cleaning position, a cleaning member holder that supports a first shaft and a second shaft, over which the cleaning member is bridged, and has an opening section allowing the cleaning head to pass therethrough, a base section that detachably fixes the cleaning member holder at a fixing position, a holder moving section that moves the cleaning member holder between the fixing position of the base section and a replacing position where the cleaning member holder is detached from the base section and is unloaded to an outside, and a cleaning driving section that has a connecting section, which is connected and disconnected to and from the first shaft in the cleaning member holder, and drives the first shaft to wind.

Screen printer 10 is for screen printing solder paste 13 loaded on an upper surface of stencil 12 onto board S using one of first and second squeegees 71 and 72. Screen printer 10 is provided with a stencil frame holding rail that holds stencil frame 12a of stencil 12, pair of board holding members 36 and 38 that hold board S, raising and lowering table 16 that raises and lowers board holding members 36 and 38, and pair of stencil supporting members 50 and 52 that support stencil 12 from below at a portion outside a printing region of stencil 12 used for screen printing. Stencil supporting members 50 and 52 are provided independently from raising and lowering table 16. Therefore, the load applied to raising and lowering table 16 is reduced. Also, there is increased design freedom with respect to members and the like loaded on raising and lowering table 16.

The present disclosure discloses a screen printing system and a cleaning method thereof. The screen printing system has a scraper cleaning region and a working region, and the screen printing system includes a scraper and a scraper cleaning unit. The scraper operates within the working region, and the scraper cleaning unit is configured to clean the scraper. The scraper and the scraper cleaning unit are configured as follows: the scraper stays in the working region, and the scraper cleaning unit moves to a position where the scraper stays to clean the scraper; or the scraper cleaning unit is positioned in the scraper cleaning region, and the scraper moves to the scraper cleaning region, so that the scraper cleaning unit cleans the scraper.

Provided is a printing device prints a transfer material onto a substrate via a mask. The printing device includes a placement portion, a moving portion, a cleaning unit, and a control unit. The placement portion is where the mask is movably placed. The moving portion moves the mask placed on the placement portion. The cleaning unit removes the transfer material remaining on the back side of the mask. The control unit controls the moving portion. Upon maintenance of the cleaning unit, the control unit controls the moving portion to move the mask placed on the placement portion to a retract position.

A printing apparatus of the present disclosure is for performing printing of a viscous fluid onto a print target using a screen mask, the printing apparatus including: a moving section configured to perform at least one of moving an exchangeable member to an exchange position or loading and unloading of the exchangeable member, for at least two types of the exchangeable member that, out of a cartridge configured to house the viscous fluid, a squeegee, a screen mask, a cleaning member used to clean the screen mask, and a support member configured to fix the print target, include at least one out of the cartridge, the squeegee, and the cleaning member; and an exchange control section configured to control the moving section to perform exchange processing of exchanging the exchangeable member.

A printing apparatus including: a cleaning section including a cleaning member and configured to perform cleaning processing of a screen mask used in printing of a viscous fluid onto a print target; a cleaning member moving section configured to perform at least one of moving the cleaning member to and from a cleaning position and an exchange position, and unloading and loading of the cleaning member; and an exchange control section configured to control the cleaning member moving section to perform cleaning member exchange processing of exchanging the cleaning member.

A screen printing apparatus includes a print head, a moving base, and a mask cleaner. The print head prints a paste onto a board through the mask. The moving base moves under the mask in a horizontal paste scraping direction. The mask cleaner is mounted to the moving base and moves under the mask integrally with the moving base, and scrapes off the paste adhering to a lower surface of the mask. A base body is mounted to the moving base and includes a longitudinal side being horizontal and intersecting the paste scraping direction. Plurality of blades are detachably mounted to the base body and extending in the longitudinal direction and are arranged side by side in parallel to the paste scraping direction and cause a paste scraping edge protruding upward from the base body to come into abutment against the lower surface of the mask.

A printing screen for printing deposits of a print medium onto workpieces, the printing screen comprising a sheet in which a pattern of printing apertures are formed to allow for printing of a pattern of deposits onto a workpiece, and a waveguide which can be driven to induce an ultrasonic vibration in the sheet, wherein the waveguide comprises an elongate body at a surface of the sheet which at least partially surrounds the pattern of printing apertures.

A cleaning device cleans a screen mask. The cleaning device includes a cleaning sheet configured to clean the screen mask; a roll-shaped supply section configured to supply the cleaning sheet; a cleaning head configured to press the cleaning sheet supplied from the supply section against a rear surface of the screen mask; a roll-shaped winding section configured to wind a used cleaning sheet; a driving section configured to drive the winding section; a moving mechanism configured to move the supply section, the cleaning head, and the winding section in the same direction as and in an opposite direction to a supply direction of the cleaning sheet; a lifting and lowering mechanism configured to lift and lower the cleaning head; and a brake mechanism configured to allow rotation of the supply section when the cleaning head is lowered by the lifting and lowering mechanism, and to restrict rotation of the supply section when the cleaning head is lifted by the lifting and lowering mechanism.

Screen printer 10 is for screen printing solder paste 13 loaded on an upper surface of stencil 12 onto board S using one of first and second squeegees 71 and 72. Screen printer 10 is provided with a stencil frame holding rail that holds stencil frame 12a of stencil 12, pair of board holding members 36 and 38 that hold board S, raising and lowering table 16 that raises and lowers board holding members 36 and 38, and pair of stencil supporting members 50 and 52 that support stencil 12 from below at a portion outside a printing region of stencil 12 used for screen printing. Stencil supporting members 50 and 52 are provided independently from raising and lowering table 16. Therefore, the load applied to raising and lowering table 16 is reduced. Also, there is increased design freedom with respect to members and the like loaded on raising and lowering table 16.