n = 4, 52 specified (only for B.M specs)
The Black mark length and mark interval currently used are returned in
All fractional parts in millimeters are rounded off.
Byte 1 + Byte 2 ⋅ 256 = Black mark interval
Byte 3 + Byte 4 ⋅ 256 = Black mark length
(2)
(1)
| Black mark paper |
[Caution] | • Under DTR/DSR control, the printer sends the printer ID after verifying that the |
| host is ready to receive. |
| • Sending the Black mark length is valid only when Black mark paper is selected. |
| If the host is not ready to receive, the printer waits for the host to become ready to |
| receive. |
| • Under XON/XOFF control, the printer sends the printer ID without checking whether |
| or not the host is ready to receive. |
| • Because this command is executed when data is mapped in the receive buffer, |
| there may be a delay between command receiving and printer ID sending depending |
| on the condition of the receive buffer. |
| • If ASB (Automatic Status Back) is enabled by GS a, the host must discriminate |
| between the printer ID due to this command and the status due to ASB. |
