Gemini Industries Printer user manual Firing the Pins

Gemini User’s Manual

Gemini requires that precisely the correct number of characters you specify with nl and n2 will follow immediately after the n2 control code. If there are too many (or too few) characters, unexpected and crazy things will happen.

The high-resolution graphics mode is entered by sending Gemini the control code:

ESC “L”nln2, which selects the 120 dots-

per-inch column scan bit image- graphics mode.

But Gemini’s graphics capabilities don’t stop there. The Gemini- 10X/15X, with control codes ESC “y”nln2 and ESC “z”nln2, will take you two steps beyond high-resolution graphics, and allow you to print faster and with even greater density.

ESC “y” nln2 commands the printer to print dual-density graphics with double-speed. In other words, your result will be high-resolution graphics (as if you had used ESC ‘IL”) but they will be printed twice as fast!

ESC “z”nln2 puts Gemini in the quadruple- density graphics mode (even more dots per inch). The result of this ultra- high-resolution mode is the capacity to print 1,920 dots in one line on the Gemini-lox, and 3264 dots in one line on the Gemini-15X. (See the ex- planation of nl and n2 for ESC “K”to define how many columns of dots you want to print in a line.)

Firing the Pins

There are nine pins in the Gemini print head. In the graphics mode, you can control the upper eight. For those of you with computers that can only send seven bits (Apple II and some others), you control the top seven pins. Let’s look at the print head again and label the pins as follows:

92