Nippon Mitsubishi Oil Corporation

New Long Seimitsu Kogyo Co., Ltd.

Ryuji Ichikawa

Nobuyuki Kuroda

A curved surface screen-printing apparatus adapted to screen-print a to-be-printed object having a large radius of curvature. Concentric curved-surface guides having an equal radius of curvature are respectively provided on both side portions of a jig table on which a printing board to be bent and used as the to-be-printed object is placed. A squeegee head crossing over the jig table, and a screen plate mounting frame are provided in the apparatus. A pair of steel belts are used to connect a corresponding one of the guides to the frame. The belts of each pair are made to intersect each other. An end of each of the belts is fixed to a side end portion of a corresponding one of the curved surface guides as viewed from a side thereof. The other end thereof is fixed to a corner portion of the screen plate mounting frame. A reciprocating motion of the squeegee head causes the screen plate mounting frame to perform a rocking motion along the curved surface of the jig table. Thus, an optimum gap between the screen plate and the to-be-printed object is maintained at all times in such a manner as to be uniform therebetween.

Curved surface screen-printing apparatus

A device for making a master plate for printing braille includes a support table on which a master plate material is positionable. A punch is disposed on a first side of the master plate material. A punch die is positioned in alignment with the punch, and is arranged on a second side of the master plate material. A punch driver is connected to the punch, and is activateable to move the punch toward the master plate material. A shifter arrangement is provided for changing a relative position of the master plate material to the punch and the punch die. A controller is operatively connected to the shifter and the punch driver for controlling an operation of the shifter and the punch driver. A data supply arrangement is coupled to the controller, and supplies punching data thereto. The controller acts upon the punching data to cause the shifter to move the plate material relative to the punch and the punch die, and cause the punch driver to be actuated to punch the plate material at locations corresponding to raised braille dot positions.

Growing community of inventors

Tokyo, Japan

Ryuji Ichikawa