Use For Journal; New Functions Added; Wall Hanging; Nv Bit-Image - Epson U220B - TM Two-color Dot-matrix Printer Technical Reference Manual

You don't have to be afraid when you use the printer with OPOS or Advanced Printer Driver
(APD) and you set the memory switch as [MemSW 8-5: OFF], [MemSW 8-8: OFF]. Because the
status behavior normally doesn't affect your application.
When you use the printer with ESC/POS commands (when you control printer without any
driver), read the sentences below:
The TM-U210 uses the "waiting on-line recover" bit in ASB status (the bit may indicate "0" or
"1"); however, the TM-U220 does not use the bit (the bit is always "0"). Because the TM-U220
recovers to online when the cover is closed (cover is closed is detected by the cover open
detector.) Therefore, if your application program watches the bit, confirm that it doesn't affect
the performing of program.
By the way, the ASB data transmitted timing of TM-U220 is same as TM-U210. You don't have to
be afraid when your application program doesn't watch the bit.
Note:
The "waiting on-line recover" is a status which is constructed by a bit in ASB (Auto Status Back) data.
The status is for telling that the printer is not prepared to print (roll paper cover isn't closed, etc...) to the
host PC. The status tells that the preparation done by the host PC is canceled. This status is canceled by
action of the FEED button or host PC. These canceling actions must be executed after the roll paper is
installed and roll paper cover is closed.
The "waiting on-line recover"bit of TM-U220 is always "0," because the TM-U220 can tell "ready for
printing (roll papaer is installed and roll paper cover is closed )" to the host PC.

6.1.7 Use for Journal

TM-U220 Type A is able to be used for journal as TM-U210 (Type A.) However, notice following
item when you replace the TM-U210 with the TM-U220.
TM-U210 (Type D) can print on carbon roll paper with 2 copies; however, the TM-U220 can
print on carbon roll paper with 1 copies, not 2 copies.

6.1.8 New functions added

6.1.8.1 Wall hanging

The TM-U220 can be installed on a wall. The installing requires an option, the "WH-10." (The
schedule is TBD.)

6.1.8.2 NV bit-image

The TM-U220 can print bit-images on roll paper. See "5.4 NV Bit-image Printing (5-8 page)" for
details.

6.1.8.3 User NV memory

The TM-U220 can store some text data. See "5.3 NV memory (5-6 page)" for details.
Rev. D Notices for Replacement of the TM-U210/TM-U300 6-7
TM-U220 Technical Reference Guide