Printing screen and method

A kit for making screens to print arcuate articles and the like, comprising:

• a printing frame having substantially rigid end segments, and resilient, semi-rigid side segments connected therewith to define a plane with a frame perimeter;
• said frame side segments have outer edges spaced apart a predetermined distance;
• said frame being adapted to be flexed along said frame side segments in a direction generally transverse to the plane of said frame into an arcuate configuration which mates with the shape of the article to be printed;
• a panel of screen material adapted for attachment to said frame and for carrying a pattern thereon;
• said frame having first and second functional configurations, said first configuration being substantially flat with medial portions of said side segments being laterally deflected toward each other a predetermined distance for attaching said panel of elastic screen material to said frame, and said second printing configuration being an arcuate configuration wherein said side segments are flexed in a direction generally transverse to the plane of the frame and corresponds with the shape of the article to be printed;
• an assembly jig shaped to receive said frame thereon, and having a pair of upstanding stops anchored therein;
• said stops having interior sides and being spaced apart a distance slightly less than the distance between the outer edges of said frame side segments, and allowing for the deflection of the medial portions of said frame side segments inwardly a predetermined distance when said frame is received on said jig;
• said jig having printing frame retaining means for retaining said frame thereon with said frame side segments in a deflected configuration;
• a tensing frame having a perimeter larger than the perimeter of said printing frame, and means for retaining said screen panel therein in a generally, uniformly taut condition, whereby the kit allows for the attaching of said taut screen panel to said printing frame in the deflected condition to laterally stress said screen panel when released from said assembly jig, forming a pattern on the laterally stressed screen panel with said screen panel in a substantially flat condition;
• and thereby distortion of said pattern is alleviated when said printing frame is flexed into said arcuate printing configuration;
• a rigid screen holder having end plates with detachable connecting means for detachably connecting said printing frame end segments therewith, and being mutually inclined for bending said frame into and maintaining said frame in the desired printing configuration.

A kit for making screens to print arcuate articles and the like, comprising:

• a printing frame having substantially rigid end segments, and resilient, semi-rigid side segments connected therewith to define a plane with a frame perimeter;
• said frame side segments have outer edges spaced apart a predetermined distance;
• said frame being adapted to be flexed along said frame side segments in a direction generally transverse to the plane of said frame into an arcuate configuration which mates with the shape of the article to be printed;
• a panel of screen material adapted for attachment to said frame and for carrying a pattern thereon;
• said frame having first and second functional configurations, said first configuration being substantially flat with medial portions of said side segments being laterally deflected toward each other a predetermined distance for attaching said panel of elastic screen material to said frame, and said second printing configuration being an arcuate configuration wherein said side segments are flexed in a direction generally transverse to the plane of the frame and corresponds with the shape of the article to be printed;
• an assembly jig shaped to receive said frame thereon, and having a pair of upstanding stops anchored therein;
• said stops having interior sides and being spaced apart a distance slightly less than the distance between the outer edges of said frame side segments, and allowing for the deflection of the medial portions of said frame side segments inwardly a predetermined distance when said frame is received on said jig;
• said jig having printing frame retaining means for retaining said frame thereon with said frame side segments in the deflected configuration;
• said printing frame retaining means comprising serrations along the interior sides of said stops;
• a tensing frame having a perimeter larger than the perimeter of said printing frame, and means for retaining said screen panel therein in a generally, uniformly taut condition, whereby the kit allows for the attaching of said taut screen panel to said printing frame in the deflected condition to laterally stress said screen panel when released from said assembly jig, forming a pattern on the laterally stressed screen panel with said screen panel in a substantially flat condition;
• and thereby distortion of said pattern is alleviated when said printing frame is flexed into said arcuate printing configuration;
• a rigid screen holder having end plates with detachable connecting means for detachably connecting said printing frame end segments therewith, and being mutually inclined for bending and maintaining said frame into the desired printing configuration, said screen holder including a cut-out center which permits said screen to extend unsupported between said frame end segments to facilitate conforming said screen to the articles to be printed;
• said jig stops having sharpened free ends which allow for puncturing said screen panel to facilitate screen assembly by said screen panel passing over said stops.

An assembly jig for making printing screens of the type having a frame with a perimeter which includes substantially rigid end segments and resilient, spaced side segments, and a screen panel mounted in the frame;

• said assembly jig comprising:
• a base shaped to receive the printing screen frame thereon;
• first and second studs anchored in and upstanding from a medial portion of said base;
• said studs having interior sides and being substantially rigid and spaced laterally apart a distance slightly less than the spacing between the outer edges of said frame side segments, whereby said frame side segments are deflected inwardly at a medial portion thereof when inserted between said studs;
• serrations on the interior sides of said studs for retaining the printing frame between said studs;
• and
• said studs having pointed free ends oriented to pierce the screen panel when the screen panel is placed in contact with said studs.