BRIEF DESCRIPTION OF THE DRAWINGS
FIG. 1 shows an example of printer 30;
FIG. 2A is a perspective view showing a cartridge 50 and FIG. 2B is a perspective view showing a cartridge 60;
FIG. 3 shows an example of block diagram of a printer 30;
FIG. 4 is a flowchart showing an example of operation of the printer 30;
FIG. 5 is a schematic diagram showing the stored credits;
FIG. 6 is a flowchart showing another example of operation of the printer 30
FIG. 7 is a schematic diagram showing the stored credits;
FIG. 8 shows an example of display screen shown by a display 14;
FIG. 9 shows a schematic perspective view showing the printer 10;
FIG. 10 is an upper front perspective view showing the carriage 100;
FIG. 11 is an upper back perspective view showing the carriage 100;
FIG. 12 is schematic perspective view showing a connecting terminal 110 included in the carriage 100;
FIG. 13 is a schematic perspective view showing an example of the ink cartridge 30.
FIG. 14 is a schematic view showing the ink information storage section 310 and the advance payment information storage section 320 which are accommodated in a chip accommodating section 800.
FIG. 15 is a schematic view showing an example of electrical connection between the ink information storage section 310 and the advance payment information storage section 320;
FIG. 16 is a block diagram showing an example of block configuration of the printer 10;
FIG. 17 shows another example of electrical connection between the ink information storage section 310 and the advance payment information storage section 320;
FIG. 18 is a block diagram showing another example of block configuration of the printer 10;
FIG. 19 is a schematic view showing further another example of electrical connection between the ink information storage section 310 and the advance payment information storage section 320;
FIG. 20 is a block diagram showing further another example of block configuration of the printer 10;
FIG. 21 is a schematic perspective view of a connecting terminal 120 included in the carriage 100;
FIG. 22 is a schematic perspective view showing another example of ink cartridge 30;
FIG. 23 is a schematic view showing the ink information storage section 330 and the advance payment information storage section 340 accommodated in a chip accommodating section 802;
FIG. 24 a schematic view showing an example of electrical connection between the ink information storage section 330 and the advance payment information storage section 340;
FIG. 25 is a block diagram showing further another example of block configuration of the printer 10;
FIG. 26 is a schematic perspective view of the connecting terminal 130 included in the carriage 100;
FIG. 27 is a schematic perspective view showing further another example of ink cartridge 30;
FIG. 28 is a schematic view showing an ink information storage section 350 and an advance payment information storage section 360 accommodated in a chip accommodating section 804;
FIG. 29 is a schematic view showing an example of electrical connection between the ink information storage section 350 and the advance payment information storage section 360; and
FIG. 30 is a block diagram showing further another embodiment of the block configuration of the printer 10.