Method and apparatus for separating a silk screen from a printed object
AssigneeCanon Kabushiki Kaisha
InventorsYoshihiro Yanagisawa, Tetsuya Kaneko
Life of this patent
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Abstract
A screen printer is provided with a printing table for setting an object to be printed, a screen, and a squeegee. The squeegee is arranged on the object to be printed, which is set on the printing table through the screen, and depending on the patterns set on the screen, ink patterns are formed on the object to be printed by allowing the squeegee to travel in a state that it is in contact with ink. This screen printer includes a mechanism for applying an external force which is movably arranged with respect to the screen, and is capable of applying an external force in the direction of offsetting the adhesive strength of ink between the screen and the object to be printed.
Claims37
A screen printer with a printing table for setting an object to be printed, a screen, and a squeegee, said squeegee being arranged through said screen on said object to be printed set on said printing table, depending on screen patterns set on said screen, ink patterns being formed on said object to be printed by allowing said squeegee to move in contact with ink, said printer comprising:
- a shaft provided on said printing table substantially perpendicular to a surface of said screen:
- and
- applying means rotatably supported by said shaft around an axis substantially perpendicular to the surface of said screen and movable with respect to said screen, said applying means applying an external force in a direction to offset an adhesive strength of ink between said screen and said object to be printed.
A screen printing method in which a squeegee is arranged through a screen on an object to be printed, and in which, depending on screen patterns set on said screen, ink patterns are formed on said object to be printed by allowing said squeegee to travel in contact with ink, said method comprising the following steps of:
- forming said ink patterns by allowing said squeegee to travel;
- moving application means, for applying an external force, into position proximal to said screen by rotating said application means around an axis substantially perpendicular to a plane of said screen;
- and
- applying an external force for separating said screen from said object to be printed by said application means.
A screen printer provided with a printing table for setting an object to be printed, a screen, and a squeegee, said squeegee being arrangeable through said screen on said object to be printed set on said printing table, and depending on screen patterns set on said screen, ink patterns being formed on said object to be printed by allowing said squeegee to move in contact with ink, said printer comprising:
- applying means, movably arranged with respect to said screen, for applying an external force in a direction to offset an adhesive strength of ink between said screen and said object to be printed, said applying means being provided with means for providing suction and a suction port connected to said means for providing suction, said suction port being arranged to apply the suction at an area of said screen on which the screen patterns are not set.
A screen printing method in which a squeegee is arranged through a screen on an object to be printed, and in which, depending on screen patterns set on said screen, ink patterns are formed on said object to be printed by allowing said squeegee to travel in contact with ink, said method comprising the following steps of:
- forming said ink patterns by allowing said squeegee to travel;
- and
- applying suction, for separating said screen from said object to be printed, in a position shiftable with respect to an area of said screen on which the screen patterns are not set.
A screen printer provided with a printing table for setting an object to be printed, a screen, and a squeegee, said squeegee being arrangeable through said screen on said object to be printed set on said printing table, and depending on screen patterns set on said screen, ink patterns being formed on said object to be printed by allowing said squeegee to move in contact with ink, said printer comprising:
- applying means movably arranged with respect to said screen, for applying an external force in a direction to offset an adhesive strength of ink between said screen and said object to be printed, said applying means being a magnet, and said screen being formed by a magnetically attractable material.
A screen printing method in which a squeegee is arranged through a magnetically attractable screen on an object to be printed, and in which, depending on screen patterns set on said screen, ink patterns are formed on said object to be printed by allowing said squeegee to travel in contact with ink, said method comprising the following steps of:
- forming said ink patterns by allowing said squeegee to travel;
- and
- applying a magnetic force, for separating said screen from said object to be printed, in a position shiftable with respect to said screen.
A screen printing method in which a squeegee is arranged through a screen on an object to be printed set on a printing table, and in which, depending on screen patterns set on the screen, ink patterns are formed on the object to be printed by allowing the squeegee to move in contact with ink, said printing method comprising the steps of:
- forming the ink patterns by allowing the squeegee to travel;
- applying, using applying means, an external force in a direction to offset an adhesive strength of ink between the screen and the object to be printed;
- and
- providing the applying means on both sides of a scan area by the squeegee and providing the applying means with a plurality of rigid members to be inserted between the screen and the object to be printed.
A screen printer with a printing table for setting an object to be printed, a screen, and a squeegee, said squeegee being arranged through said screen on said object to be printed set on said printing table, depending on screen patterns set on said screen, ink patterns being formed on said object to be printed by allowing said squeegee to move in contact with ink, said printer comprising:
- applying means for applying an external force in a direction to offset an adhesive strength of ink between said screen and said object to be printed,
- wherein said applying means is provided on both sides of a scan area by said squeegee and comprises a plurality of rigid members to be inserted between said screen and said object to be printed.
Dependencies are inferred from the claim text.