Provides is a seal surface carving apparatus capable of carving a seal surface using only a single attachment irrespective of a size of a stamp. A porous impression die having a seal surface to be carved is set on a dedicated attachment, and is loaded in a seal surface carving apparatus. A fitting projection fit to a bottom portion of the impression die is formed on the attachment, and impression dice having various sizes may be set. In addition, a slit hole extending in a conveyance direction is formed in an impression die setting portion of the attachment. Impression die size determination means of the seal surface carving apparatus determines a size of the impression die by detecting a position at which the impression die blocks the slit hole.

The present invention relates to architected stamps having beneficial printing properties. In particular, negative Poisson ratio structures and/or porous reservoirs can be employed to control fluid dynamics and to provide metered ink transfer.

An assembly includes a master for imprinting of micro-structures and nano-structures. The master has on its upper surface an active area with relief structure for imprinting of the micro-structures and nano-structures, and the master has a thickness d.sub.master. The assembly includes frame pieces arranged around and flushing along the outer circumference of the master, with the frame pieces having a thickness d.sub.frame. The thickness d.sub.frame of the frame pieces deviates from the thickness d.sub.master of the master by at most 250 .Math.m. A a flexible stamp has improved alignment.

An assembly includes a master for imprinting of micro-structures and nano-structures. The master has on its upper surface an active area with relief structure for imprinting of the micro-structures and nano-structures, and the master has a thickness d.sub.master. The assembly includes frame pieces arranged around and flushing along the outer circumference of the master, with the frame pieces having a thickness d.sub.frame. The thickness d.sub.frame of the frame pieces deviates from the thickness d.sub.master of the master by at most 250 .Math.m. A a flexible stamp has improved alignment.

A hand-operated stamp (1) comprising a housing (2) in which a stamp unit (3) coupled to an actuating part (8) which can be displaced with respect to the housing (2) is mounted, wherein the actuating part (8) has a locking element (10, 10′) for limiting a displacement of the actuating part (8) with respect to the housing (2), wherein the locking element (10, 10′) is configured as a rocker element (10a) on a pivot shaft (14), wherein the actuating part (8) has a recess (22) for receiving the rocker element (10a), wherein the pivot shaft (14) is arranged in the recess (22), wherein the actuating part (8) has a supporting strut (23) in the recess (22), wherein the supporting strut (23) is arranged parallel to the pivot shaft (14).

A hand-operated stamp (1) comprising a housing (2) in which a stamp unit (3) coupled to an actuating part (8) which can be displaced with respect to the housing (2) is mounted, wherein the actuating part (8) has a locking element (10, 10′) for limiting a displacement of the actuating part (8) with respect to the housing (2), wherein the locking element (10, 10′) is configured as a rocker element (10a) on a pivot shaft (14), wherein the actuating part (8) has a recess (22) for receiving the rocker element (10a), wherein the pivot shaft (14) is arranged in the recess (22), wherein the actuating part (8) has a supporting strut (23) in the recess (22), wherein the supporting strut (23) is arranged parallel to the pivot shaft (14).

A method for transposing multi-event sports meet information on skin comprises the steps of using a rotating type stamping device mechanism where multiple selections can be made to refine event specifics. These specifics which may include event number, heat number, lane number, stroke, and distance information are then stamped onto an athlete's skin with the device. Multiple lines can be stamped covering an array of events. Stamping creates a clear image and requires no writing by hand on the skin to populate the event information.

A method for transposing multi-event sports meet information on skin comprises the steps of using a rotating type stamping device mechanism where multiple selections can be made to refine event specifics. These specifics which may include event number, heat number, lane number, stroke, and distance information are then stamped onto an athlete's skin with the device. Multiple lines can be stamped covering an array of events. Stamping creates a clear image and requires no writing by hand on the skin to populate the event information.

An ink composition for a reversibly thermochromic stamp including a reversibly thermochromic microencapsulated pigment encapsulating a reversibly thermochromic composition including: Component (A): an electron-donating color-developing organic compound, Component (B): an electron-accepting compound, and Component (C): a reaction medium causing reversibly an electron transfer reaction between the Component (A) and the Component (B) in a specific temperature range, water and a thickener.

An ink composition for a reversibly thermochromic stamp including a reversibly thermochromic microencapsulated pigment encapsulating a reversibly thermochromic composition including: Component (A): an electron-donating color-developing organic compound, Component (B): an electron-accepting compound, and Component (C): a reaction medium causing reversibly an electron transfer reaction between the Component (A) and the Component (B) in a specific temperature range, water and a thickener.