PRINTERS
QUESTIONS #7
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| 11. What type of printer can be used to print multipart forms? A. Laser B. Ink-jet C. Bubble-jet D. Dot-Matrix |
| 12. Where does an inkjet printer move the printhead to keep the ink from drying? A. Nozzle zone B. Safe zone C. Maintenance area D. Tune area |
| 13 . During what phase of the laser printing process does the corona wire put a -600 volt charge on the drum? A. Conditioning B. Developing C. Writing D. Cleaning |
| 14. During what phase of the laser printing process does the toner melt onto the paper? A. Fusing B. Cleaning C. Writing D. Developing |
| 15 . What phase of the laser printing process follows the conditioning phase? A. Cleaning B. Writing C. Developing D. Fusing |
| 16 . The transfer corona uses a/an ______ charge to attract the toner to the paper. A. negative B. alternating C. magnetic D. positive |
| 17 . During the fusing process, toner is: A. dry pressed into the paper B. electrically bonded to the paper C. melted into the paper D. glued to the paper |
| 18. On the PC side, the printer port is a: A. 25 pin female serial connector B. 25 pin female parallel connector C. 25 pin male serial connector D. 15 pin female serial connector |
| 19 . How do you connect to a shared printer? A. From the Printer folder double-click Add Printer and choose Network Printer B. From Explorer choose Connect to Network Printer C. From Control Panel choose Connect to Network Printer. D. From Control Panel select Add New Hardware and choose Network Printer. |
| 20 . The print from a dot-matrix printer is sometimes light, sometimes dark. This is most likely caused by: A. paper not advancing properly B. worn ribbon C. defective printhead D. defective carriage assembly |
| 21 . The process that laser printers use to produce a printed image is called ? A. Electro Photographic B. Laser photographic C. Laserwriting |
| 22 . In EP print process what voltage is used in the transfer corona to charge the paper? A. -600 Volts B. +600 Volts C. -6000 Volts D. +6000 Volts |
| 23 . Which component is responsible for moving the ink from the drum onto the paper in the EP print process? A. The primary corona B. The OPC drum C. The laser beam D. The transfer corona |
| 24 . What voltage is used to transfer the toner to the paper in an EP process laser printer? A. -600 Vdc B. +600 Vdc C. -6000 Vdc D. +6000 Vdc |
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| 25 . What special type of paper is the most susceptible to environmental hazards? A. Thermal Paper B. Laser printer paper C. Fast-drying inkjet paper D. Thermal hot wax slicks |
| 26 . Your laser printer is on, you hear the fan running, but it won't print. What is the first thing you should check? A. that all the cables are connected securely B. that the correct print driver is installed C. that the printer is not jammed D. that the printer is online |
| 27 . During the laser printer's conditioning phase a uniform charge of _______ is placed on the photosensitive drum. A. +600 volts B. -600 volts C. -100 volts D. +100 volts |
| 28 . In order to place this charge on the drum, the primary corona wire must emit a charge of: A. +6000 volts B. -6000 volts C. +1000 volts D. -1000 volts |
| 29 . Your laser printer gives you an error code 50. This is usually caused by a defective: A. high voltage power supply B. formatter board C. laser unit D. fuser assembly |
| 30 . An important first step in troubleshooting which component in a laser printer is causing a jam is to: A. look up error codes B. remove the jammed paper C. turn the printer off, then on again D. note where in the paper path the paper stops |
| 31 . Select the best choice for cleaning laser toner from clothing: A. clean cloth with cool water B. warm soapy water C. pure dishwashing detergent D. dry clean |
| 32 . Your client gets garbage characters when trying to print a document. Which of the questions listed below could you ask? A. Do you have a sample? B. What applications are being used? C. Where is the printer located? D. Occurrence (how often)? E. All of the above |
| 33 . Most modern printers connect to the serial port. A. True B. False |
| 34 . A thermal printer uses a special paper and heat to produce an image. A. True B. False |
| 35 . With a dot matrix printer, light then dark print is most commonly caused by: A. Erratic paper advancement B. Erratic ribbon advancement C. Misalligned print head D. Overheating print head |
| 36 . If the output on a dot-matrix printer fades from the left to the right, you probably need to adjust the ____________? A. Platen B. Printhead C. Roller D. Feed Mechanism |
| 37 . When printing with a Dot Matrix Printer, the test is not even darker in some places than others. What is the expected problem? A. Bent platen B. Worn print wires C. Bad ribbon |
| 38 . What action will correct patchy, faint, uneven or intermittent print on a dot matrix printer? A. Replacing the timing belt B. Adjusting the paper feed tension C. Adjusting the tractor feed tension D. Replacing the ribbon |
| 39 . On a dot matrix printer the letters are beginning to fade. You_____ A. Clean Platen B. Tighten head C. Change Ribbon D. Checks hard drive for lost clusters |
| 40 . What does an Inkjet printer use to guide the flow of ink droplets? A. High pressure air. B. Heat C. Electrically charged metal plates |
| 41 . It isn't a good idea to reuse a ink jet cartridge because_____? A. It will void the printer warrantee B. The ink isn't as good C. With a new cartridge you are also replacing the jets |
| 42 . After you service a laser printer, you notice dirty print. Which of the following would correct the problem. Choose the BEST answer. A. Run several blank pages B. Reset the printer C. Clean the laser diode D. Clean the developer tank |
| 43 . What is the purpose of a Thermal Fuse? A. In case the low voltage power supply overheats B. In case the High voltage power supply overheats C. To guard against the Fusing roller over heating |
| 44 . Which component must be vacuumed or replaced during preventative maintenance on a laser printer? A. Scanning mirror B. Toner cartridge C. Ozone filter D. EP Drum |
| 45 . To prevent toner from sticking to a laser printer's heat rollers, apply which of the following: A. Alcohol B. Oil C. Ammonia D. soapy water |
| 46 . The coating on the drum of a laser printer is_____? A. Rubber B. Never exposed to light C. Light sensitive |
| 47 . The fusing unit of a laser printer uses____and_____ to bond the image to the paper. A. Heat, Pressure B. Heat, Positive charge C. Heat, Negative charge |
| 48 . The transfer corona wire in a laser printer has a strong______ charge A. positive B. negaitve |
| 49 .Which laser printer component formats the print job ? A. printer controller circuitry B. corona assembly C. formatter software |
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| 50 . Using paper that is to coarse in a laser printer can________ A. Void warrantee B. Cause the print to be lighter than normal C. Cause premature wear to the paper path |
| 51 . The first five steps of EP process happen in the toner cartridge A. True B. False |
| 52 . Toner particles have a ____ charge A. positive B. negative |
| 53 . The developing step of EP is_______ A. After the transferring step B. The laser creates a latent image C. When positively charged toner is attracted to the drum D. None of the above |
| 54 . Which is the easiest component to enviromentally recycle? A. Motherboards B. Toner cartridges C. Cathode ray tubes D. CMOS batteries |
| 55 .How is the paper fed along in an ink jet printer? A. tractor B. timing belt C. arm D. platen |
| 56 . Which of the following are page descriptive languages? A. Page Descriptive Language B. PostScript C. PageScript D. Printer Control Language |
| 57 . If the stactic-elimminator strip is absent or broken in a laser printer what will happen ? A. Nothing, printer will function normally B. Paper jam may occur becuse the paper may curl around the photosensitive drum C. Printer will not print at all |
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| PRINTER TYPES | ||
| TYPE | PROCESS | COMMENT |
| Daisy-wheel printer. | A computer version of an electronic type writer. | One of the first types of printers developed. Not used any more |
| Dot matrix (impact printer) |
Combination of pins on the printhead hit the ribbon, causing it to leave the marks on the paper. Useful when you need to print carbon copies like receipts or shipping invoices. | Typical printhead has 9, 18, or 24 pins. Printhead becomes very hot. Don't touch it. Never lubricate a printhead. If the ribbon is too tight, the image can become smudged. Broken pins on the printhead will cause incomplete characters |
| Ink Jet | Ink is pumped from the reservoir through a nozzle by a special pump. | Ink jet printers were messy and were replaced with bubble jet printers. |
| Bubble Jet | Ink cartridge contains ink, printhead and special piezoelectric crystal. When signal is send to the crystal, it expands, forcing the ink out. | Do not refill bubble jet printer cartridges. They need to be replaced. |
| PAGE PRINTERS | ||
| EP LASER | The drum is scraped and exposed to a flourescent lamp for cleaning. A charging corona places a strong negative(-600Vdc) charge onto a photosensitive drum and uses a laser to paint an image onto the drum reducing image areas to(-100Vdc), toner is attracted to the drum from the developing roller in the toner cartridge. The image is then transferred to the paper at it's line of contact by means of a corona wire(+600Vdc). A static elimenator removes the remaining charge from the paper. the paper and toner then go into the fuser where they are pressed and heated to 350'F. The paper with the final image is rolled out of the printer. | |
| HP LASER | The drum is scraped and exposed to LED's for cleaning. A charging roller places a strong negative(-600Vdc) charge onto a photosensitive drum and uses a laser to paint an image onto the drum reducing image areas to(0Vdc), toner is attracted to the drum from the developing roller in the toner cartridge. The image is then transferred to the paper at it's line of contact by means of a transfer roller(+600Vdc). A static elimenator removes the remaining charge from the paper. The paper and toner then go into the fuser where they are pressed and heated to 180'F. The paper with the final image is rolled out of the printer. | |
| LED | Same as HP and EP except drum and toner cartridge are separate and the image is written to the drum with LED's (Light Emitting Diodes). | |
| C | C | W | D | T | F |
| LASER PRINTERS | ||
| STEP | PROCESS | DESCRIPTION |
| 1 | CLEANING | EP drum is cleaned with a rubber blade , and the eraser lamp (or LED's) are turned on near the surface of the EP drum, causing the drum to loose it's charge. Now the drum is ready to take on a new image |
| 2 | CONDITIONING ( CHARGING ) |
The EP drum is given a negative charge of approximately -600 Volts by the primary corona wire |
| 3 | WRITING ( EXPOSING ) |
A laser beam is used to write to the EP drum,causing the dots on the drum to loose some of the negative charge and become relatively positively charged. |
| 4 | DEVELOPING | A toner is transferred from the toner cylinder to the EP drum by attracting to the area of the drum that has relative positive charge. |
| 5 | TRANSFERRING | The transfer corona wire charges the paper with a high positive charge. The EP drum turns as the paper passes under It, pulling the toner into the paper. A static charge eliminator prevents the paper from wrapping around the drum. |
| 6 | FUSING | The paper passes between the heated fuser roller and the rubber roller, the toner is melted and pressed into the paper. The heated roller reaches the temperature of about 180 degrees Celsius. The temperature sensor on the fuser roller will shut down the printer if the temperature gets dangerously high. Finally the excess toner is scrubbed off the paper by the cleaning pad. |
| ~ | END OF CYCLE |
The paper with the final image is rolled out of the printer. |
| The toner is a combination of plastic, metal and organic compounds. In most laser printers the toner and EP drum are contained in one "toner cartridge". Do not recycle the toner cartridge, it needs to be replaced. | ||
| A paper jam can occur when the wrong type of paper is used. It can cause more than one page to enter the registration rollers. A jam can also be caused by the bad separator pad. | ||
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| LASER PRINTER ERROR CODES | |
| 00 Ready | Printer is in stand-by mode and ready to print . |
| 02 Warm up | The fuser is being warmed up before the Ready state. |
| 05 Self-Test | Full self test has been initiated from the front panel. |
| 11 Paper Out | The paper tray sensor is reporting that there is no paper in the paper tray. |
| 13 Paper Jam | A piece of paper is caught in the paper path. |
| 14 No EP Cart | There is no EP toner cartridge installed. |
| 15 Engine Test | An engine self-test is in progress. |
| 16 Toner Low | The toner cartridge is almost empty. Replacement will be necessary soon. |
| 50 Service | A fuser error has occurred, possibly a fuser lamp failure. |
| 51 Error | Laser scanner assembly problem. |
| 52 Error | The scanning motor in the laser scanning assembly is malfunctioning. |
| 55 Error | Communication problem between formatter and DC controller. |
| * In the case with most of these errors the printer will not print as long as the error exists. * | |
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