JPH04218995A - Thick film printer - Google Patents

Abstract

PURPOSE:To prevent the transcription of foreign matter to a board and the transcription shortage of paste and prevent the short of a printing pattern and the wire breaking by making a squeeze have a static electricity remover and an aspirator for removing the foreign matter on a screen just before printing. CONSTITUTION:Paste 2 is supplied onto a screen 1, and further a board 3 is supplied to a board holder, and then a squeeze 4 is shifted on the screen 1, and ozone 8 is emitted toward the screen 1 from a static electricity remover 5 attached to the front so as to remove the static electricity from on the screen 1. Then, the aspirator 6 attached to the rear of the static electricity remover 5 aspirates up (9) the foreign matter on the screen 1. Immediately after it, the squeeze 4 pushes out paste 2 from the screen 1, and prints it on a board 3.

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial Field of Application] The present invention relates to a thick film printing machine, and more particularly to a thick film printing machine in a method for manufacturing a multilayer wiring ceramic substrate.

[Conventional technology]

Conventional thick film printing machines supply paste onto a screen, then supply the substrate to a substrate holder, and then move the squeegee over the screen once to push the paste out of the screen and print onto the substrate. It had become.

[Problem to be solved by the invention]

The above-mentioned conventional thick film printing machine tends to have foreign matter attached to the screen before printing, which may cause foreign matter to be transferred to the substrate during printing or insufficient transfer of the paste, which may cause short circuits and disconnections in the printed pattern. There is a drawback.

[Means to solve the problem]

The thick film printing press of the present invention emits ozone toward the screen from the static electricity eliminator installed in front of the squeegee, removes static electricity on the screen, and then applies ozone to the screen using the suction device installed behind the static electricity eliminator. By suctioning the foreign matter on the screen and printing immediately after that, the transfer of the foreign matter to the substrate and the insufficient transfer of the paste are prevented, and short circuits and disconnections of the printed pattern are prevented.

〔Example〕

Next, the present invention will be explained with reference to the drawings.

FIG. 1 is a sectional view of an embodiment of the present invention.

After supplying the paste 2 onto the screen 1 and further supplying the substrate 3 to a substrate holder (not shown), move the squeegee 4 on the screen 1 in the direction of the arrow 7.
Ozone 8 is emitted toward the screen 1 from the static electricity eliminator 5 installed in front of the screen 1 to remove static electricity on the screen 1, and then ozone 8 is emitted toward the screen 1 from the suction device 6 installed behind the static electricity eliminator 5. Suction 9 is performed to suck up the foreign matter on the screen 1, and immediately after that, the squeegee 4 pushes out the paste 2 from the screen 1 and prints on the substrate 3, thereby preventing the transfer of foreign matter to the substrate 3 and insufficient transfer of the paste 2. Prevents short circuits and disconnections in the pattern.

〔Effect of the invention〕

As explained above, the present invention prevents the transfer of foreign substances to the substrate and the insufficient transfer of the paste by providing the squeegee head with a static electricity removal device and a suction device for removing foreign substances on the screen immediately before printing. This has the effect of preventing short circuits and disconnections in the printed pattern.

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an embodiment of the thick film printing machine of the present invention. DESCRIPTION OF SYMBOLS 1... Screen, 2... Paste, 3... Substrate, 4... Squeegee, 5... Static electricity remover, 6... Suction device. Agent: Susumu Uchihara, patent attorney

Claims (1)

[Claims] A screen placed on the substrate, a squeegee that moves while extruding the paste supplied onto the screen onto the substrate and printing, and a static electricity remover installed in front of the squeegee that generates ozone toward the screen. 1. A thick film printing machine comprising: a device for removing static electricity; and a suction device provided between the static electricity removing device and the squeegee and sucking up foreign matter on the screen.