Star Micronics Dot Impact Printer - Manual (Page 81)

3-73 STAR Command Specifications
Rev. 0.70
3-4 Black Mark Related Commands
The Star black mark related commands are to control the top of form (black mark) functions.
This commands are effective only when black mark function is valid.
1.
Top of form (black mark detection) operation
A. Selectable when power is turned on (reset signal is input), when self-print test is completed and by the memory
switch.
Memory switch setting When power is turned on (reset signal is input), when self-print ends
Condition (1)
Maintain
Condition (2) Top of form (black mark detection) to printing start position
B. Press FEED.
Executes top of form (black mark) to printing start position
C. Command
See the following command details.
D. Other Errors, Detailed Settings
Refer to each printer’s specification manual.
2 Black Mark Error
A. Enter black mark error
• When white is detected when feeding paper (*depends on the model) beyond a predetermined length.
Enter black mark error
• When black is detected when feeding paper (*depends on the model) beyond a predetermined length.
BM/PE dual use model → enter paper out error
BM independent model → enter black mark error
* Depends upon the model
See the Product Specifications Manual for each printer for details on the predetermined length and the BM sensor speci-
fications (dual use and dedicated).
B. Operation during a black mark error
• Offline
• Only the following commands are valid. Other commands are stored in the reception buffer.
• ENQ: Inquire ENQ status
• EOT: Inquire EOT status
• ESC ACK SOH: Inquire automatic status
• Auto status is valid.
C. Black mark error canceling method
Refer to each printer’s specification manual.
3. Ignore Commands
When black mark is valid, the following page length control commands are invalid.
Class Commands Function
Page control ESC C 3 bytes ignored (Set line page length to n lines)
ESC C 0 4 bytes ignored (Set line page length to n inches)
VT 1 byte ignored (Feed paper to vertical tab position)
ESC B Ignored until NUL (Set vertical tab position)
ESC N 3 bytes ignored (Set bottom margin to n lines)
ESC O 2 bytes ignored (Cancel bottom margin)