Cleaning attachment for screen printer
AssigneePrecision Screen Machines, Inc.
InventorsDavid Jaffa, Sandor Szarka
Life of this patent
Estimating the term…
Abstract
An apparatus for over the edge printing including a printing squeegee which forces ink through clear portions of a printing screen onto a workpiece. Excess ink which is forced through clear portions of the printing screen and which extend over the edge of the workpiece, are cleaned by a cleaning assembly which includes a cleaning belt. The cleaning belt is unrolled below the printing screen and an excess ink squeegee prints the excess ink onto the cleaning belt which is then cleaned and re-rolled and the apparatus is made ready for the next printing stroke.
Claims15
A printing apparatus for printing on a surface of a workpiece comprising:
- a support frame,
- screen printing means mounted on said support frame,
- said screen printing means having an upper and a lower surface, and
- cleaning means mounted on said support frame being positionally disposed adjacent said screen and adapted to clean said lower surface of said screen printing means with movement of said workpiece outwardly from under the printing screen means, wherein the cleaning means is a belt which has a portion thereof extended into contact with the underside of the screen printing means from said adjacent position and retracted back after cleaning.
In a screen printing apparatus having a printing screen mounted on a support frame, ink deposition means for depositing ink on the upper surface of said printing screen and printing squeegee means, the improvement comprising
- cleaning means mounted on said support frame and operatively disposed adjacent said screen and adapted to clean the lower surface of said printing screen with movement of a workpiece outwardly from under the printing screen wherein the cleaning means is a belt which has a portion thereof extended into contact with the underside of the screen printing means from said adjacent position and retracted back after cleaning.
A printing apparatus for over-the-edge printing on a surface of a workpiece comprising:
- (a) a support frame,
- (b) screen printing means mounted on said support frame,
- (c) means for moving a workpiece into a position beneath said screen printing means for printing and away from said screen printing means after printing,
- (d) means to apply a printing material to said screen printing material, and
- (e) means to remove excess printing material from said screen printing means:
- 1. cleaning means disposed adjacent to said screen and moveable concomitantly with movement of the workpiece away from the screen printing means to a position directly beneath said screen printing means, wherein the cleaning means is a belt which has a portion thereof extended into contact with the underside of the screen printing means from said adjacent position and retracted back after cleaning,
- 2. means to transfer the excess printing material from said screen printing means to said cleaning means, and
- 3. means to remove the excess printing material from said cleaning means.
Dependencies are inferred from the claim text.