US 6,237,484 B1Granted

Screen printing apparatus

AssigneeHitachi Techno Engineering Co., Ltd.

InventorsMakoto Homma, Mitsuhiko Sato, Isao Abe, Noriaki Mukai

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Abstract

A screen printing apparatus 199, 169 has a roll paper vibrating device which vibrates roll paper in contact with the lower surface of a screen mask in a direction perpendicular to a moving direction of the roll paper while the roll paper is being moved in contact with the lower surface of the screen mask. Thereby, the roll paper in contact with the lower surface of the screen mask is moved in a waveform-shape pattern. Therefore, the cumulative contact area of the roll paper on the lower surface of the mask is increased, and it is possible to efficiently remove residue, such as paste attached onto the lower surface of the screen mask of the printing apparatus and paste attached inside pattern openings of the screen mask, to maintain a good printing performance.

Claims11

Dependent claims

A screen printing apparatus, comprising:

a mask having pattern openings;
a squeegee for forming a pattern on a substrate, the squeegee being slid on an upper surface of said mask to print the pattern by forcing paste supplied on the upper surface of said mask onto the substrate placed under a lower surface of said mask through the pattern openings;
cleaning paper to be brought into contact with the lower surface of said mask;
a roller pressed against the lower surface of said mask with said cleaning paper interposed therebetween;
roller moving means for moving said roller in a desired direction with respect to the lower surface of said mask;
cleaning paper vibrating means for vibrating said cleaning paper in a plane substantially parallel to a plane of the lower surface of said mask while said roller moves in the desired direction;
and
cleaning paper moving means for alternately moving said cleaning paper forward and backward over said roller while said roller moves in the desired direction.

5 more elements

Dependencies are inferred from the claim text.