Method of printing two-dimensional code and ink jet printer

• US 20080180509A1
• Filed: 01/29/2008
• Published: 07/31/2008
• Est. Priority Date: 01/29/2007
• Status: Abandoned Application

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Maki, Yoichiro
• Application Number:
  US12/011,835
• Publication Number:
  US 20080180509A1
• Time in Patent Office: Days
• US Class Current: 347/107
• CPC Class Codes: B41J 2/2128 by means of energy modulation control methods or devices therefor, e.g. driver circuits or control circuits B41J2/04501
• CPC Class Codes: G06K 1/121 by printing code marks applying code marks to labels B65C9/46; marking or coding completed packages B65B61/26
• CPC Class Codes: G06K 15/102 using ink jet print heads

Abstract

A method of printing a two-dimensional code using an ink jet printer includes ejecting ink within a predetermined ink ejecting area to form a colored cell constituting the two-dimensional code such that ink bleed adjusting portions are arranged along the outer edge of the ink ejecting area, each ink bleed adjusting portion being a portion where ink is not ejected or a smaller amount of ink than normal amount is ejected.

Claims

1. A method of printing a two-dimensional code using an ink jet printer, the method comprising:

ejecting ink within a predetermined ink ejecting area to form a colored cell constituting the two-dimensional code such that ink bleed adjusting portions are arranged along an outer edge of the ink ejecting area, each ink bleed adjusting portion being a portion where ink is not ejected or a smaller amount of ink than normal amount is ejected.

2. The method according to claim 1, wherein the ink bleed adjusting portions each have a size approximately equivalent to a single dot.

3. The method according to claim 2, wherein a dot formed by ejecting the normal amount of ink is arranged on each of at least three sides of each ink bleed adjusting portion.

4. The method according to claim 2, wherein one or two dots formed by ejecting the normal amount of ink are arranged between two adjacent ink bleed adjusting portions.

5. The method according to claim 1, wherein the ink bleed adjusting portions are arranged in a single line along the outer edge of the ink ejecting area.

9. The method according to claim 4, wherein when the ink ejecting area includes an even number of rows and columns, two dots formed by ejecting the normal amount of ink are arranged between the ink bleed adjusting portions.

10. The method according to claim 4, wherein when the ink ejecting area includes an odd number of rows and columns, one dot formed by ejecting the normal amount of ink is arranged between the ink bleed adjusting portions.

16. The method according to claim 1, wherein the ink bleed adjusting portions are continuously placed along the outer edge of the ink ejecting area.

17. The method according to claim 1, wherein the two-dimensional code is a stacked code selected from a group comprising PDR417, and a matrix-type code.

6. A method of printing a two-dimensional code using an ink jet printer, the method comprising:

ejecting ink within a predetermined ink ejecting area to form a colored cell constituting the two-dimensional code such that ink bleed adjusting portions are arranged along the outer edge of the ink ejecting area, each ink bleed adjusting portion being a portion where ink is not ejected or a smaller amount of ink than normal amount is ejected, wherein

the ink bleed adjusting portions are placed in a periphery of the ink ejecting area.

7. An ink jet printer for printing a two-dimensional code, comprising:

an ink cartridge;

a print head that ejects ink supplied from the ink cartridge to a recording medium; and

a control unit that controls the print head to eject ink within a predetermined ink ejecting area in order to form a colored cell constituting the two-dimensional code such that ink bleed adjusting portions are arranged along an outer edge of the ink ejecting area, each ink bleed adjusting portion being a portion where ink is not ejected or a smaller amount of ink than normal amount is ejected.

8. A method of printing a two-dimensional code using an ink jet printer, the method comprising:

ejecting ink within a predetermined ink ejecting area to form a colored cell constituting the two-dimensional code such that ink bleed adjusting portions are placed inside outermost dots arranged in the periphery of the ink ejecting area, each ink bleed adjusting portion being a portion where ink is not ejected or a smaller amount of ink than normal amount is ejected.

11. The method according to claim 8, wherein the ink bleed adjusting portions each have a size approximately equivalent to a single dot.

12. The method according to claim 11, wherein one or two dots formed by ejecting the normal amount of ink are arranged between two adjacent ink bleed adjusting portions.

13. The method according to claim 12, wherein when the ink ejecting area includes an even number of rows and columns, two dots formed by ejecting the normal amount of ink are arranged between the ink bleed adjusting portions.

14. The method according to claim 12, wherein when the ink ejecting area includes an odd number of rows and columns, one dot formed by ejecting the normal amount of ink is arranged between the ink bleed adjusting portions.

15. An ink jet printer for printing a two-dimensional code, comprising:

an ink cartridge;

a print head that ejects ink supplied from the ink cartridge to a recording medium; and

a control unit that controls the print head to eject ink within a predetermined ink ejecting area in order to form a colored cell constituting the two-dimensional code such that ink bleed adjusting portions are placed inside outermost dots arranged in periphery of the ink ejecting area, each ink bleed adjusting portion being a portion where ink is not ejected or a smaller amount of ink than normal amount is ejected.