Epson ESC Manuale Utente Scaricare il pdf (Pagina 80)

A-78

Slice 1 to Slice 11

Each byte defines the image information for the vertical columns

(slices) of the graphic.

Slice 1

defines the leftmost vertical column,

and

Slice 11

defines the rightmost. Within each byte the most

significant bit (bit 7) defines the topmost dot and the least significant

bit (bit 0) defines the bottommost dot of the slice. A bit being on

indicates that its associated dot is to be printed. The eight bits of

data are mapped onto 20 wires in the printer to give the same aspect

ratio. Bit image is mapped as follows:

1. Ascender

Dot

Position

Top

Bit

Number

Wires

o 7 1, 2 If dots 7 and 6 are printed, wire 3 is used

o 6 4, 5

o 5 6, 7 If dots 5 and 4 are printed, wire 8 is used

o 4 9, 10

o 3 11, 12 If dots 3 and 2 are printed, wire 13 is used

o 2 14, 15

o 1 16, 17 If dots 1 and 0 are printed, wire 18 is used

o 0 19, 20

Bottom

1. Ascender

Dot

Position

Top

Bit

Number

Wires

o 7 4, 5 If dots 7 and 6 are printed, wire 6 is used

o 6 7, 8

o 5 9, 10 If dots 5 and 4 are printed, wire 11 is used

o 4 12, 13

o 3 14, 15 If dots 3 and 2 are printed, wire 16 is used

o 2 17, 18

o 1 19, 20 If dots 1 and 0 are printed, wire 21 is used

o 0 22, 23

Bottom

1 2 ... 75 76 77 78 79 80 81 82 83 84 85 ... 287 288

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Epson ESC Manuale Utente Pagina 80

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