User manual EPSON SQ-2550

[. . . ] FCC COMPLIANCE STATEMENT FOR AMERICAN USERS This equipment generates and uses radio frequency energy and if not installed and used properly, that is, in strict accordance with the manufacturer's instructions, may cause interference to radio and television reception. It has been type tested and found to comply with the limits for a Class B computing device in accordance with the specifications in Subpart J of Part 15 of FCC rules, which are designed to provide reasonable protection against such interference in a residential installation. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause interference to radio and television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures: · Move the printer away from the receiver · Plug the printer into a different outlet so that the printer and receiver are on different branch circuits. [. . . ] Therefore, your printer has a command which allows you to copy all of the standard characters from ROM to the user-defined character set. The command format is as follows, where the value of n represents the font family: ESC: 0 n 0 Note: This command will cancel any user-defined characters you have created. You must send this command to the printer before you define characters. If you use this command at the beginning of a program, then define your special characters and select the user-defined character set, you can print with the user-defined set as your normal character set. You'll never need to switch back and forth between sets. Letter Quality characters If you select Letter Quality printing with the ESC xl command, you can design user-defined characters using up to 29 columns of the Letter Quality/Proportional grid. The dot columns are spaced closer together horizontally than draft style dot columns (the horizontal dot spacing is 1/360th of an inch as opposed to 1/120th of an inch for draft characters). proportional mode characters Selecting the proportional character mode will yield user-defined characters of the highest resolution. Characters can be designed using all 37 columns of the Letter Quality/Proportional grid. Remember that in Letter Quality and proportional modes, as in draft, you cannot place dots in adjacent columns. There must be an empty dot position to the left and right of each dot that prints. Superscripts and subscripts You can also create superscript and subscript user-defined characters. Just as Letter Quality characters are defined when the Letter Quality mode is selected, super/subscript characters are created when either superscript or subscript is selected. These super/subscript characters can be used either as superscripts or as subscripts. The characters are exactly the same; it is only their placement that differs. The difference between super/subscript characters and regular characters is that they are smaller. They are a maximum of 16 dots high and their width in dot columns is shown in the table below: Since super/subscript characters are smaller, they do not require as much information when you define them. When you define super/subscript characters, you need only two bytes of data for each vertical row of dots. Design grids for these characters are shown in the figure below. Mixing print styles Each of the three user-defined character modes (draft, Letter Quality, and proportional) can be used in combination with most of your printer's various print styles. for instance , emphasized works with user-defined characters. The characters you design are enhanced to give this printing effect. [. . . ] The printer memory is sometimes called the buffer. micro adjustment A feature that adjust the loading and short tear-off positions in 1/180th of an inch units. This feature can be used immediately after loading paper. Number systems Three number systems are commonly used with printers: decimal is base 10 and uses the digits 0, 1, 2, 3, 4, 5, 6, 7, 8, and 9. [. . . ]