Dot Matrix Printer Head Test Software
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Make sure that the printer is turned on and the ink out light is off.Note:If the ink out light is flashing, you cannot clean the print head. You need to replace the appropriate ink cartridge first. Access the printer software. For instructions, see Accessing the printer software. Click the Utility tab and click the Head Cleaning button. Follow the on-screen instructions.The power light and the ink lights flash while the printer performs the cleaning cycle.Caution:Never turn off the printer while the power light is flashing. Doing so may damage the printer. When the power light stops flashing, click Print Nozzle Check Pattern in the Head Cleaning dialog box to confirm that the head is clean and to reset the cleaning cycle.Below are nozzle check patterns:
If print quality hasn't improved after repeating this procedure four or five times, turn the printer off and leave it alone overnight. Then do the nozzle check again, and repeat the head cleaning if necessary.
Make sure that the printer is turned on and the ink out light is off. Access the Print or Page Setup dialog box and click the Utility icon button, then click the Head Cleaning button. Follow the on-screen instructions.The power light and the ink lights flash while the printer performs the cleaning cycle.Caution:Never turn off the printer while power light is flashing. Doing so may damage the printer. When the power light stops flashing, click the Confirmation button in the Head Cleaning dialog box to print a nozzle check pattern and to reset the cleaning cycle. Use the check pattern to confirm that the head is clean.If print quality has not improved after repeating this procedure four or five times, turn the printer off and leave it alone overnight. Then do the nozzle check again, and repeat the head cleaning if necessary.
The printer starts cleaning the print head and the power light and the ink lights begin flashing.Caution:Never turn off the printer while the power light is flashing. Doing so may damage the printer. When the power light stops flashing, print a nozzle check pattern to confirm that the head is clean and to reset the cleaning cycle.If print quality has not improved after repeating this procedure four or five times, turn the printer off and leave it alone overnight. Then do the nozzle check again, and repeat the head cleaning if necessary.
You can also use the self test to determine whether the printer or the computer is causing the problem. See Printing a Self Test for instructions on printing a self test. To pinpoint communication problems, experienced users may want to use the printer's hex dump mode described in Printing Hex Dump.
Your printing appears too high or low on the page.CauseWhat to doThe paper size setting in your application software or printer driver does not match the size of the paper you are using.Check the paper size setting in your application or printer driver.The printer's page length settings for the front or rear tractor do not match the size of the continuous paper you are using.Check the page length settings for the front or rear tractor using the printer's default-setting mode. See Changing default settings.The top margin or top-of-form position setting is incorrect.Check and adjust the margin or top-of-form position settings in your application software. See the printable area specifications in Printable area.You can also adjust the top-of-form position using the Micro Adjust function. However, settings made in Windows applications override settings made in the Micro Adjust mode. See Adjusting the top-of-form position.The printer driver settings you want to use are not selected in your software.Choose the correct printer driver setting from the Windows desktop or in your application before printing.You moved the paper using the knob while the printer was on.
This wikiHow teaches you how to fix clogged print heads in your printer. Clogged print heads are the result of dried-up ink from lack of use, and can lead to patchy or erroneous printing. You can usually fix clogged print heads with your printer's built-in self-cleaning software, though you may have to clean the print heads manually if that doesn't work.
Dot matrix printing,[1] sometimes called impact matrix printing, is a computer printing process in which ink is applied to a surface using a relatively low-resolution dot matrix for layout. Dot matrix printers typically use a print head that moves back and forth or in an up-and-down motion on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter or line printer. However, a dot matrix printer is able to print arbitrary patterns and not just specific characters.
The perceived quality of dot matrix printers depends on the vertical and horizontal resolution and the ability of the printer to overlap adjacent dots. 9-pin and 24-pin are common; this specifies the number of pins in a specific vertically aligned space. With 24-pin printers, the horizontal movement can slightly overlap dots, producing visually superior output (near letter quality or NLQ), usually at the cost of speed.
In 1968, the Japanese manufacturer OKI introduced its first serial impact dot matrix printer (SIDM), the OKI Wiredot. The printer supported a character generator for 128 characters with a print matrix of 75. It was aimed at governmental, financial, scientific and educational markets. For this achievement, OKI received an award from the Information Processing Society of Japan (IPSJ) in 2013.[11][12][13]
In 1970 Digital Equipment Corporation (DEC) introduced an impact dot matrix printer, the LA30, as did Centronics (then of Hudson, New Hampshire): the Centronics 101.[14] The search for a reliable printer mechanism led it to develop a relationship with Brother Industries, Ltd of Japan, and the sale of Centronics-badged Brother printer mechanisms equipped with a Centronics print head and Centronics electronics. Unlike Digital, Centronics concentrated on the low-end line printer marketplace with their distinctive units. In the process, they designed the parallel electrical interface that was to become standard on most printers until it began to be replaced by the Universal Serial Bus (USB) in the late 1990s. The Apple ImageWriter was a popular consumer dot matrix printer in the 1980s until the mid 1990s.
In the 1970s and 1980s, dot matrix printers were generally considered the best combination of expense and versatility, and until the 1990s they were by far the most common form of printer used with personal and home computers.
Another manufacturer of Matrix Printers is Tally.[citation needed]Tally was a leading American manufacturer of printers. Founded in 1949 in Kent, Washington, United States by Philip Renshaw, the company was a leading manufacturer of punch tape readers. In 1970 Tally developed line matrix printer technologies and became a leader in the printer industry.Tally was succeeded by TallyGenicom and also TallyGenicom is succeeded by Tally Dascom since 2010.
Dot matrix printing uses a print head that moves back-and-forth, or in an up-and-down motion, on the page and prints by impact, striking an ink-soaked cloth ribbon against the paper, much like the print mechanism on a typewriter. However, unlike a typewriter or daisy wheel printer, letters are drawn out of a dot matrix, and thus, varied fonts and arbitrary graphics can be produced.
The portion of the printer that contains the pin is called the print head. When running the printer, it generally prints one line of text at a time. The printer head is attached to a metal bar that ensures correct alignment, but horizontal positioning is controlled by a band that attaches to sprockets on two wheels at each side which is then driven with an electric motor.[16] This band may be made of stainless steel, phosphor bronze or beryllium copper alloys, nylon or various synthetic materials with a twisted nylon core to prevent stretching. Actual position can be found out either by dead count using a stepper motor, rotary encoder attached to one wheel or a transparent plastic band with markings that is read by an optical sensor on the printer head (common on inkjets).
The common serial dot matrix printers use a horizontally moving print head.[22] The print head can be thought of featuring a single vertical column of seven or more pins approximately the height of a character box. In reality, the pins are arranged in up to four vertically or/and horizontally slightly displaced columns in order to increase the dot density and print speed through interleaving without causing the pins to jam. Thereby, up to 48 pins[23] can be used to form the characters of a line while the print head moves horizontally. The printing speed of serial dot matrix printers with moving heads varies from 30[24] to 1550 cps.[25]
In a considerably different configuration, so called line dot matrix printers[26] use a fixed print head almost as wide as the paper path utilizing a horizontal line of thousands of pins for printing. Sometimes two horizontally slightly displaced rows are used to improve the effective dot density through interleaving. While still line-oriented, these printers for the professional heavy-duty market effectively print a whole line at once while the paper moves forward below the print head. Line matrix printers are capable of printing much more than 1000 cps, resulting in a throughput of up to 800 pages/hour.
A variation on the dot matrix printer was the cross hammer dot printer, patented by Seikosha in 1982.[27] The smooth cylindrical roller of a conventional printer was replaced by a spinning, fluted cylinder. The print head was a simple hammer, with a vertical projecting edge, operated by an electromagnet. Where the vertical edge of the hammer intersected the horizontal flute of the cylinder, compressing the paper and ribbon between them, a single dot was marked on the paper. Characters were built up of multiple dots. 153554b96e
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