Epson RP-U420 manual Definitions, more, C O N F I D E N T I A L, Ver. 1.0 p

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DEFINITIONS

(1)Normal commands

Normal commands are all the commands except real-time commands. The normal commands are stored in the receive buffer temporarily and then processed sequentially.

(2)Real-time commands

Real-time commands are the commands that consist of a DLE extension (such as DLE EOT or DLE ENQ). The real- time commands execute processing when received. After executing, they are stored in the receive buffer and then discarded as undefined codes when the normal commands are processed.

(3)Receive buffer

The receive buffer is used to store data from the host computer. All received data is stored in this buffer and processed in the order received. Buffer capacity depends on the printer model used.

(4)Print buffer

The print buffer is used to store image data for printing.

(5)Print buffer-full

This is the state which occurs when the print buffer becomes full.

(6)Print buffer-full printing

If new print data (such as characters or bit images) or horizontal tabs are processed in standard mode when the print buffer is full, the image data already stored in the print buffer is printed and a line feed is executed. This is the same operation as LF. The data (print data or horizontal tab) that causes the print buffer full is processed from the beginning of the next line.

(7)Beginning of the line

The beginning of the line means that no data exists in the print buffer, and the beginning of the line is the left margin.

(8)Printable area

This is the maximum printable area specified for each printer model.

(10)Ignoring a command

This is the printer state in which the printer does nothing after receiving all codes, including parameters.

RP-U420 Definitions Ver. 1.0 p. 13