Shuffled playing card and method of manufacturing playing card
There is provided a shuffled playing card, wherein a suit and a rank are printed on one surface of a card base sheet, and a back pattern is printed on another surface, different sheet IDs for one card base sheet or each of a plurality of card base sheets are printed on the card base sheet, one deck or a plurality of decks are formed by individual cards cut by a cutting machine from the card base sheet, the one deck or the plurality of decks are shuffled by a shuffle machine to form a set of shuffled playing cards, different shuffled playing card IDs for each set are assigned to the shuffled playing card as ID codes, and the sheet ID of the playing card constituting the shuffled playing card and the shuffled playing card ID are associated with each other in a database.
1. A playing card set that includes one or more decks of playing cards, wherein:
the playing card set is assigned a playing card set ID by which the playing card set is distinguishable from other playing card sets;
each of the playing cards of the playing card set is assigned and has printed thereon an on-card printed ID that is different than each on-card printed ID that is assigned to any playing card of the other playing card sets; and
the on-card printed ID of the playing cards of the playing card set and the playing card set ID of the playing card set are associated with each other in a database so that, for each of the playing cards of the playing card set, the playing card set is uniquely identifiable from the on-card printed ID to thereby determine that the respective card belongs to the playing card set.
2. The playing card set according to claim 1 , wherein the on-card printed ID is printed with ink that is invisible under visible light.
3. The playing card set according to claim 2 , wherein the ink with which the on-card printed ID is printed is a transparent UV ink.
4. The playing card set according to claim 1 , wherein the database further associates the on-card printed ID with information regarding a manufacture of the respective playing card to which the on-card printed ID is assigned.
5. The playing card set according to claim 4 , wherein the information regarding the manufacture includes one or more of:
a printing date of the playing card;
a cut date of the playing card;
a factory name of the playing card;
a manufacturing line of the playing card; and
a casino name of the playing card.
6. The playing card set according to claim 1 , wherein whether a respective playing card is genuine is determinable based on whether an on-card printed ID that is printed on the respective playing card is included in the database.
7. The playing card set according to claim 1 , wherein the one or more decks includes a plurality of decks, and the on-card printed ID assigned to the playing cards of the playing card set includes a respective on-card printed ID that each is assigned to, and is printed on all of the playing cards of, a respective deck of the plurality of decks.
8. The playing card set according to claim 1 , wherein the on-card printed ID assigned to the playing cards of the playing card set includes a plurality of on-card printed IDs that each is different from each and every on-card printed ID assigned to the any of the playing cards of the other playing card sets.
9. The playing card set according to claim 1 , wherein the on-card printed ID assigned to the playing cards of the playing card set is a single common on-card printed ID that is assigned to all of the playing cards of the playing card set.
10. The playing card set according to claim 1 , wherein the playing card set is in a shuffled state and packaged in a package.
11. A method comprising:
producing a plurality of decks of playing cards;
packaging one or more of the plurality of decks of playing cards as a playing card set;
printing on each of the playing cards of the playing card set any of one or more on-card printed IDs that are assigned to the playing cards of the playing card set and that are each different than each on-card printed ID that is assigned to playing cards of other playing card sets;
assigning to the playing card set a playing card set ID by which the playing card set is distinguishable from each of the other playing card sets; and
producing a database in which the on-card printed ID of the playing cards of the playing card set and the playing card set ID of the playing card set are associated with each other.
12. The method according to claim 11 , further comprising shuffling the one or more of the plurality of decks of playing cards before the packaging.
13. The method according to claim 11 , wherein the on-card printed ID is printed with ink that is invisible under visible light.
14. The method according to claim 13 , wherein the on-card printed ID is printed with a transparent UV ink.
15. The method according to claim 11 , wherein the producing of the database includes associating, in the database, the on-card printed ID with information regarding a manufacture of the respective playing card to which the on-card printed ID is assigned.
16. The method according to claim 15 , wherein the information regarding the manufacture includes one or more of:
a printing date of the playing card;
a cut date of the playing card;
a factory name of the playing card;
a manufacturing line of the playing card; and
a casino name of the playing card.