Matsushita Electric Industrial Co., Ltd.

Seiko Abe

Seiichi Miyahara

Michinori Tomomatsu

Kimiyuki Yamasaki

Takahiro Fukagawa

Minoru Murakami

Yuji Otake

Kunihiko Tokita

Hirotoshi Sakamoto

Akira Maeda

A cream solder cartridge used in a screen printing apparatus which prints cream solder on a board through pattern holes by sliding, on a mask plate, a closed squeegee that is stored with cream solder inside is composed of a long and narrow concave portion made of a flexible film-like material, a brim portion projecting from the outer periphery of the concave portion, and a film-like cover sheet that is stuck to the brim portion and thereby closes the opening of the concave portion. This configuration makes it possible to supply paste at a low cost and to perform a viscosity adjustment easily by externally stirring the paste accommodated inside.

Paste container for screen printing and screen printing apparatus

It is possible to obtain a screen printing method that may assure excellent printing qualities since the screen printing method of the present invention includes: (A) sliding a squeegee head with paste stored in the squeegee head on a mask plate, while the past is pressurized, and printing the paste on a substrate through pattern holes of the mask plate, (B) at least one step of (b) separating the squeegee head with the paste stored therein from the mask plate, and (e) sliding the squeegee head on the mask plate for a pre-squeezing purpose before the step (A). The step of separating the squeegee head from the mask plate includes the steps of (1) discontinuing the pressure application to the paste stored in the squeegee head, (2) horizontally moving the squeegee head by a predetermined distance while the bottom end portion of the squeegee head is abutted on the mask plate in a state of the pressure application being discontinued, and (3) moving the squeegee head upward off from the mask plate. In the step of pre-squeezing includes the steps of (1) pressurizing the paste stored in the squeegee head in a state of the squeegee head being abutted on the mask plate, and (2) horizontally moving the squeegee head while the bottom end portion of the squeegee head is abutted on the mask plate in a state of the paste being pressurized.

Screen printing method

A screen printing method and apparatus are capable of maintaining a constant attack angle between a squeegee and a mask plate, regardless of the surface condition of the mask plate. A squeegee head, including a pair of squeegees, is rotatably supported by a retainer with respect to a horizontal axis that is at a right angle to a squeegeeing direction. The rotatably supported squeegee head is pushed by a cylinder against the mask plate. Accordingly, the attack angle is kept constant to improve the printing quality even if a substrate has a curved portion.

Screen printing apparatus having rotatable united squeegee pair, and method of screen printing using said apparatus

A screen printing apparatus in which a squeegee head is moved on a mask plate thereby to print paste on a substrate through pattern holes , slide contact portions A and B form respectively front and rear walls in the squeegeeing direction of a printing space which reserves cream solder therein and makes the cream solder contact with the surface of the mask plate through an opening portion formed at the lower surface thereof. Each of the slide-contact portions is configured by a partition plate for partitioning between the printing space and the outside and a filling block having a filling surface which forms an acute angle with respect to the surface of the mask plate . In the squeegeeing operation, the filling surface rolls the cream solder . Thus, the cream solder can be filled into the pattern holes without pressurizing the cream solder, and a problem caused by the leakage of the cream solder can be eliminated.

Screen printing apparatus

A screen printing method and apparatus for applying paste into pattern apertures of a mask plate by sliding a filling member provided at a lower end of a squeegee head. The filling member forms an acute angle with an upper surface of the mask plate. Any extra paste on the mask plate is wiped by sliding a wiper provided at a lower end of the squeegee head. The wiper forms an obtuse angle with the upper surface of the mask plate.

Growing community of inventors

Fukuoka, Japan

Seiko Abe