Image Scanner Operator’s Manual
Error! Reference source not found. Note to users in the United States of America This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation.
SAFETY INFORMATION SAFETY INFORMATION When using your machine, the following safety precautions should always be followed. R WARNING: Ignoring this warning could cause serious injury or even death. R CAUTION: Ignoring this caution could cause injury or damage to property. R Symbols R means a situation that requires you take care. q Do NOT carry out the operation represented by the symbol m. This example means “Do not take apart.” r Symbols r means you MUST perform this operation .
SAFETY INFORMATION R WARNINGS: m • o q • r • m • ii Only connect the machine to the power source described in the Important Information Section. Avoid multi-wiring. • Do not damage , break or make any modifications to the • power cord. Do not place heavy objects on it, pull it hard or bend it more than necessary. These actions could cause an electric shock or fire. Do not plug or unplug the power cord with your hands • wet. Otherwise, an electric shock might occur.
SAFETY INFORMATION R CAUTIONS: m • r • t o • When you pull out the plug from the socket, grip the plug to avoid damaging the cord and causing fire or electric shock. • If you use the machine in a confined space, make sure there is a continuous sir turnover. Keep the machine away from humidity and dust. A fire or an electric shock might occur. Do not place the machine on an unstable or tilted • surface. If it topples over, it could cause injury.
SAFETY INFORMATION IMPORTANT INFORMATION IMPORTANT INFORMATION 1. Read all of these instructions and keep them for later reference. 2. Follow all warnings and instructions marked on the machine. 3. Unplug this machine from the wall outlet before cleaning. Do not use liquid cleaners or aerosol cleaners. 4. Do not use this machine near water. 5. Do not place this machine on an unstable cart, stand, or table. The machine could fall and suffer serious damage. 6.
SAFETY INFORMATION IMPORTANT INFORMATION 12. Except as specifically explained in the operator’s manual, do not attempt to service this device yourself. Opening or removing those covers that are marked “Do Not Remove” may expose you to dangerous, voltage points or to other risks. Refer all servicing in those compartment to service personel. 13. Unplug this machine from the wall outlet and refer servicing to qualified service personal under the following conditions; A.
TABLE OF CONTENTS TABLE OF CONTENTS SAFETY INFORMATION IMPORTANT INFORMATION INTRODUCTION Overview ............................................................................................... ix Features ................................................................................................ ix Options ................................................................................................... x Using this Manual.............................................................................
TABLE OF CONTENTS INSTALLING THE DRIVERS ............................................................... 1-14 Installing the TWAIN Scanner Driver ................................................ 1-14 Installing the ISIS Scanner Driver ..................................................... 1-14 USING THE SCANNER INTRODUCTION.................................................................................... 2-1 PLACING ORIGINALS ON THE SCANNER..........................................
TABLE OF CONTENTS A. SCANNER FEATURES SCANNER FUNCTIONALITY ............................................................... A-1 Prescan .............................................................................................. A-1 Scan ................................................................................................... A-2 Scanning composition ........................................................................ A-3 Binary Scanning-Threshold ...........................................
INTRODUCTION INTRODUCTION This manual contains detailed instructions on the operation and maintenance of your scanner. To obtain maximum versatility from your scanner, you should carefully read this manual and follow the instructions it provides. Make sure to read the “Safety Information” section of this manual before using the scanner. This section contains important information related to user safety and to preventing equipment problems.
INTRODUCTION Options The following are available to you as options that you can add to the basic components provided with your scanner: ❐ ❐ Image Processing Unit Operation Panel Kit Using this Manual This manual explains how to configure and use the scanner. This section provides short descriptions of the chapters that make up this manual, the conventions used throughout the manual, and various publications that may be of further use to you when using the scanner.
INTRODUCTION Conventions The following conventions are used throughout this manual: Square brackets - the names of the hard keys, soft keys and buttons on the scanner and on your host computer are enclosed in square brackets. For example, the [Start] button. Italics - names of documents are shown in italics. Note: “Notes” provide general information to help you complete a task or further understand the text.
INTRODUCTION General Information ❐ Some of the illustrations of the scanner in this manual may differ slightly from the actual appearance of your scanner. ❐ Some of the options described in this manual may not be available in your country. Contact your local dealer for details on the options available to you. ❐ Two kinds of size notation are employed in this manual.
SETTING UP THE SCANNER SETTING UP THE SCANNER GENERAL GUIDE The following illustrations show the names of the various components that make up the scanner.
SETTING UP THE SCANNER Rear View RS-232C connector Power cord socket Rotary switch SCSI connectors DIP switches Service switch CAUTION: Do not touch the service switch. This switch is provided for use by service personnel only.
SETTING UP THE SCANNER CHECKING THE PARTS Make sure that you have all the parts shown below in your packing box.
SETTING UP THE SCANNER SCANNER LOCATION Before actually setting up the scanner, take a few minutes to consider where you plan to use it. Remember the following points when doing this. ❐ Set up the scanner in an easily accessible area with temperatures between 50 and 90 degrees Fahrenheit (10 to 32 degrees Celsius) with a relative humidity of 20 to 80 percent.
SETTING UP THE SCANNER CONNECTING TO THE HOST Use the following procedure to connect the scanner to a host computer using a SCSI cable. Note the following important points when making SCSI cable connections. ❐ Turn all devices being connected before making any connections. ❐ The use of cables other than the specified shielded cables or their equivalents will invalidate your scanner’s certification and can cause interference levels that exceed the limits established for this equipment.
SETTING UP THE SCANNER one end of the shielded high 2 Plug density 50-pin SCSI II cable (ANSI-compliant*1) into the SCSI II port located on the back of the scanner. you do not plan to connect 3 Ifanything to the other port, cap it with a terminator*2. the other end of the SCSI 4 Plug cable into the host computer or other peripheral. *1 SCSI Cables There are a variety of different SCSI connector types, including the high-density 50-pin connector, the D-sub 25-pin connector, and the 50-pin flat connector.
SETTING UP THE SCANNER *2 Terminators Generally you need to have two terminators at each end of a SCSI chain. If you connect this scanner at the end of a SCSI chain, you should cap the scanner’s unused SCSI port with a terminator. If the scanner is located inside of a SCSI chain that is already terminated, you do not need to terminate the scanner’s other port.
SETTING UP THE SCANNER SETTING THE SCSI ID Each device in a SCSI chain must have its own unique ID. Use the procedure below to set the scanner’s SCSI ID. Note the following important points when setting the scanner’s SCSI ID. ❐ No two devices in the SCSI chain can have the same SCSI ID. ❐ You can change the scanner’s SCSI ID while power is on, but the new setting does not take effect until you reset the scanner. ❐ Never set 8 or 9 as the scanner’s SCSI ID.
SETTING UP THE SCANNER USING TWO SCANNERS IN THE SAME SCSI CHAIN Two of these scanners can be included in the same SCSI chain. In such a case, you must make sure to correctly make certain settings in order to avoid conflicts in the chain. The settings you should make depends on whether or not the computer you care connected to is equipped with a SCAM adapter. Without SCAM Adapter In this case, just make sure that each scanner has its own unique SCSI ID. No other setting is required.
SETTING UP THE SCANNER CONNECTING THE POWER CORD Use only the power cord that comes with the scanner to connect it to a power source. Note the following important points when connecting the power cord. ❐ Use only the power cord supplied with the scanner. ❐ Connect the power cord to the scanner and plug it into a wall outlet before turning on the power switch. ❐ The plug is equipped with a grounding pin, and must be plugged into a grounded outlet.
SETTING UP THE SCANNER TURNING ON THE SCANNER Use the procedure below to turn on scanner power. To turn on the scanner power to make sure that the DIP 1 Check switches on the back of the scanner are set correctly. Note: The setting as shown is one example. the power switch to turn on 2 Use scanner power.
SETTING UP THE SCANNER DIP SWITCH SETTINGS DIP switches on the back of the scanner can be used to control certain scanner features and functions. The following describes the DIP switch settings that can be made by you. Note: You can change the settings of DIP switches 1, 3, and 4 only. Never change the settings of switches 2, 5, 6, 7, or 8.
SETTING UP THE SCANNER To change DIP switch settings off the scanner and make 1 Turn the DIP switch settings described above. 2 Turn the scanner back on.
SETTING UP THE SCANNER INSTALLING THE DRIVERS You must intall the scanner driver software on the host computer before you can use the scanner. Installing the TWAIN Scanner Driver Follow these steps to install the TWAIN scanner driver on your Windows 3.1, Windows 95, and Windows NT system: the “TWAIN Scanner Driver for Windows” diskette into the 3.5 1 Insert inch disk drive on your host computer. 2 Close any applications that are currently running.
USING THE SCANNER USING THE SCANNER INTRODUCTION This chapter describes what you need to know to how to use the scanner. Note that only operation of the scanner’s hardware is covered here. For details about using the scanner’s software driver you need to consult the separate Scanner Driver Manual for ISIS and the Driver Online-help for TWAIN.
USING THE SCANNER PLACING ORIGINALS ON THE SCANNER You can place your originals on the scanner for scanning in one of two ways: you can place them manually directly onto the glass one at a time (Book Mode), or you can use the document feeder to feed the originals automatically (Document Feeder Mode). The Book Mode is the only way to scan books, magazines, and other bound documents. Of course, you could also scan single sheets of paper this way, too.
USING THE SCANNER USING THE BOOK MODE With the Book Mode, you place the object you want to scan directly onto the glass. You must use this mode when scanning pages in a book, magazine, or other bound document. You can scan a page that contains figures written in pencil, toner, ink, ball point pen, or anything else that does not stick to the scanner’s glass. CAUTION: Never place any object that weighs more than 10 kg onto the scanner’s glass.
USING THE SCANNER close the document 3 Slowly feeder. the scan operation from 4 Execute the host computer. R CAUTION: Take care to avoid strong pressure on or impact to the scanner’s glass while the document feeder is open, otherwise glass is broken and this may cause injury. Also keep your fingers away from the scanner’s hinges to avoid pinching your fingers whenever opening or closing the document feeder.
USING THE SCANNER USING THE DOCUMENT FEEDER MODE The Document Feeder Mode lets you automatically feed single-sheet originals from the document feeder for high-speed scanning. The following defines the type of original that can be scanned using the Document Feeder Mode. Any original that does not meet the following specifications must be scanned using the Book Mode. Size Length: 128 to 1260 mm (5.04” to 49.61”) Width: 105 to 297 mm(4.13” to 11.69”) Weight 52.3 to 104.7 g/m (14 lb to 28 lb) Stacking 74.
USING THE SCANNER To use the document feeder the stack of originals and 1 Fan even up its four sides. 2 Raise the document stopper. the guide lock on the 3 Squeezing left side of the guide, adjust the document guides so they match the wide of the original. Be sure the adjust the guides before setting the stack of originals onto the document feeder.
USING THE SCANNER Note: Make sure the top of the stack of originals is not above the top lines marked on the guides. the stack of originals onto 4 Place the document feeder, and slide them into the feeder until the indicator lights. the scan operation from 5 Execute the host computer.
MAINTENANCE MAINTENANCE OVERVIEW This chapter tells you everything you need to know about maintenance of your scanner and procedures to take to solve scanner problems. This information helps keep your scanner in good working condition and helps you correct any problems that might occur.
MAINTENANCE CLEANING THE SCANNER This section describes the cleaning requirements of your scanner. Remember that keeping scanner components clean is the secret to both good scanning results and long scanner life. Contact Glass, Slit Glass, White Sheet, White Bar Dirty glasses or white sheet and bar adversely affects the quality of your scanned images. Be sure to inspect these areas for signs of dirt each time you use the scanner.
MAINTENANCE Rollers and Belt Feed errors such as jams or multiple feeding indicate that the scanner’s rollers or belt may need cleaning. Open the document feeder cover to inspect the rollers and belt for dirt. If they are dirty, clean them with a damp cloth. 1 Open the document feeder cover. 2 Open the feed roller unit. a damp soft cloth to clean 3 Use the rollers and belt inside the feed roller unit. Rotate the rollers by hand as you wipe them.
MAINTENANCE closing the feed roller unit, 4 After use a damp soft cloth to clean the two rollers inside the document feeder cover. If feed errors continue to occur after you clean the rollers, it may mean that it’s time to replace the roller set (see the next section). Note: Always clean the feed rollers after scanning documents that smear or contain substances that may be transferred to the rollers.
MAINTENANCE REPLACING THE ROLLER SET Your scanner requires periodic cleaning of the roller set in order to keep originals feeding properly. If feed problems continue to occur even after you clean the roller set, it means that you must replace the roller set with a new one. Contact your dealer for information about purchasing a roller assembly. R CAUTION: Be sure to turn off power before replacing the roller set. 1 Open the document feeder cover.
MAINTENANCE out the black plastic cover 3 Pull next to the large white roller, and then remove the white roller. Note: Take care that you do not damage the nearby mylar guide when removing Roller A. a new white roller into the 4 Insert scanner. Press the roller onto the spindle while rotating it from side to side until you feel the roller snap into place. Note: Take care that you do not damage the nearby mylar guide when inserting Roller A.
MAINTENANCE 5 Replace the black plastic cover. the new feed roller unit into 6 Install the scanner as shown in the illustration. Double check to make sure that the pins on the end of the shaft that is towards the back of the scanner seat properly into the holes that are provided. Grasp the shaft and rotate it in both directions until the shaft seats properly. the document feeder 7 Close cover.
TROUBLESHOOTING TROUBLESHOOTING OVERVIEW This chapter provides information on problems that may occur while using the scanner, as well as the actions you can take to solve the problems. Operational errors are indicated by indicators located on the front of the scanner, above the power switch. Should an error or problem persist even when you use the procedures provided in this section, contact your service representative for assistance.
TROUBLESHOOTING Document Feeder Raised Indicator Color Status Green On Green Off Green Off Red On This error indicates that the document feeder is raised. the document feeder 1 Lower cover, making sure it goes all the way down. Paper Jam Indicator Color Status Green On Green Off Green Blinking Red On This error indicates that an original is jammed in the document feeder. the document feeder cover. 1 Open If you cannot see the original, skip to step 4. 2 Carefully original.
TROUBLESHOOTING the original for tears or 3 Inspect curling. If it is in good condition, return it to the starting position on the document feeder and restart the scan job. If the original is wrinkled, smooth it out and scan using the Book Mode. 4 Open the document feeder. the jammed original is visible, 5 Ifcarefully remove it and close the cover. the original for tears or 6 Inspect curling. If it is in good condition, return it to the starting position on the document feeder and restart the scan job.
TROUBLESHOOTING Paper Misfeed Indicator Color Status Green On Green Off Green On Red On This error indicates that the document feeder could not feed the originals for some reason. the document feeder cover 1 Open and carefully remove the original as shown in the illustration. If the original does not pull out easily, perform step 2. the document feeder and 2 Raise carefully remove the original as shown in the illustration. If the original does not pull out easily, perform step 3.
TROUBLESHOOTING the green release lever to 4 Return its original position. the original for tears or 5 Inspect curling. If it is in good condition, return it to the starting position on the document feeder and restart the scan job. If the original is wrinkled, smooth it out and scan using the Book Mode. System Error Indicator Color Status Green Flashing Green Flashing Green Flashing Red Flashing This error indicates a scanner system error. 1 Turn the scanner off. 2 Turn the scanner back on.
TROUBLESHOOTING 2WKHU 3UREOHPV The following table shows other possible problems that are not indicated by the indicators, along with the actions you should take to correct them. Condition Scanner is not turned on. Action ❐ Make sure that the power switch is on. ❐ Make sure that the power cord is properly plugged in to an appropriate power outlet. The scanner does not work properly. ❐ Make sure the SCSI cable is connected properly. ❐ Check that the host computer is operating correctly.
SCANNER SPECIFICATIONS SCANNER SPECIFICATIONS SPECIFICATIONS This section contains the electrical and hardware specifications for your scanner as well as information on the paper feed capabilities provided by the Automatic Document Feeder (ADF). Electrical and Hardware Specifications Note: All specifications are subject to change without notice.
SCANNER SPECIFICATIONS Environmental Specifications Temperature: Humidity: Air circulation: Clearance: 5-2 10 to 32 degrees Celsius 20 to 80 percent 30 cubic meters, per person, per hour 600 mm (24”) above 30 mm (1”) left and right sides 50 mm (2”) rear
SCANNER SPECIFICATIONS ,17(5)$&(6 This section provides information on the shielded high density 50-pin SCSI II cable you use to connect your scanner to your host computer, on the SCSI II Terminator plug you use on your machine, and on the RS-232C interface. It is your responsibility to make sure that you have a SCSI II port available on the host computer and to provide the SCSI II cable. In addition, you must connect a SCSI II terminator plug to the top SCSI II port on the machine.
SCANNER SPECIFICATIONS SCSI II Interface The SCSI II connection is a standard SCSI II interface and requires a shielded high density 50-pin SCSI II bus and tag cable with an A Connector and a SCSI II port available on the host computer. The terminator is a standard SCSI II Terminator plug and is provided with the scanner. The table below lists the high density 50-pin designations and associated signals for SCSI II communications.
SCANNER SPECIFICATIONS Code DB<2> DB<3> DB<4> DB<5> DB<6> DB<7> DB
GND GND RESERVED TERMPWR* RESERVED GND -ATN GND -BSY -ACK -RST -MSG -SEL -C/D -REQ -I/O Signal Data Data Data Data Data Data Data Signal Ground Signal Ground Reserved Term Power Reserved Signal Ground Attention Signal Ground Busy Acknowledge Reset Message Select Out Control/Data Request Input/Output Pin 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 SCSI II Terminator specifications A Cable Single-Ended Active
SCANNER SPECIFICATIONS RS-232C Interface This interface is provided for connection of the optional Operation Panel. It requires a standard RS-232C cross cable (3 meters maximum length) for connection. The scanner side of the cable should have a 25-pin male connector, while the other end of the cable should have a connector that matches the needs of your host computer. The table below lists pin assignments for the RS-232C interface.
SCANNER SPECIFICATIONS OPTIONS This section describes the options that are available for this scanner. Options include an Image Processing Unit (IPU) and an Operation Panel. ,PDJH 3URFHVVLQJ 8QLW The optional Image Processing Unit (IPU) adds the following functionality: ❐ Dynamic threshold - the scanned image is automatically converted to line art using the appropriate threshold. The scanner discriminates a background color and determines the threshold to use.
SCANNER FEATURES A. SCANNER FEATURES SCANNER FUNCTIONALITY This appendix contains descriptions and illustrations of the functions and features provided by your scanner, as well as illustrations of how your scanned images will output based on various specifications. Note: The scanner is controlled by the driver software you are using. Some software does not support all of the functions discussed in this appendix. The terminology used in this appendix may vary from that used by your driver software.
SCANNER FEATURES 6FDQ Function Scanning a selected area of an image using the settings you specify. Usage Enter the settings you want to use, for example, the scan area, scanning composition, resolution, and so forth. Use Scan to scan the image using these parameters. Determine the value of the settings based on the original and the output device (screen, printer, and so forth).
SCANNER FEATURES Scanning composition Function You can scan using one of three compositions: binary, halftone, or multi-value. Binary scanning records only black and white from the original. Halftone scanning records gray shades from the original using a pattern of black and white dots. Multi-value scanning records grays over 16, 64, or 256 levels. Usage Use binary scanning to scan an image that has no gray shading, for example, text or lines.
SCANNER FEATURES Binary Scanning - Threshold Function Binary scanning converts every pixel included in the image to either black or white. When the image contains a gray area, the threshold value determines whether the scanner records the area as black or white. When the threshold value is high, the scanner records more pixels as black. When the threshold value is low, the scanner records fewer pixels as black.
SCANNER FEATURES Dynamic threshold The scanned image is converted to binary using an appropriate threshold. The threshold is determined by the scanner using an optional image processing unit. Dynamic threshold Note:Dynamic threshold is available only when the optional Image Processing Unit is installed.
SCANNER FEATURES Halftone scanning Function Creates the illusion of gray scales by simulating shades of gray from patterns of black and white dots. Usage Use halftone scanning when you are scanning an image that has gray shadings (for example, a photograph) when you want to print or display the image on a monochrome device, such as a laser printer. Halftoning requires less memory. Therefore, it is convenient for filing a large amount of image data.
SCANNER FEATURES Multi-value scanning Function Multi-value scanning can record 4, 6, or 8 bits of information for each dot on the image. The 4-bit multi-value data represents 16 different shades of gray, the 6-bit data represents 64 shades of gray, and the 8-bit data represent 256 different shades of gray. Therefore, an 8-bit scan of an image requires eight times more space than a binary (1-bit) scan of the same image.
SCANNER FEATURES Area extraction Function Extracts a rectangular area from the whole scannable area. Usage Use area extraction when you want to extract a portion of an image. For example, when you want to extract a photograph from a page, define a rectangle over the photograph, as shown below. You determine the position of the area by setting the X and Y coordinates of the upper left corner of the rectangle.
SCANNER FEATURES Section area (multi-area settings) Function Within the scan area, you can set separate rectangular areas and define separate scanning modes, such as binary scanning, halftone scanning, or binary filters, for each area. You can specify up to six areas for one scan. These areas can be stacked and the last defined area is valid. Note: When you specify six areas scanning may not result in the correct mode, depending on how they are stacked.
SCANNER FEATURES Auto photo/letter Function The auto photo/letter mode detects photograph (halftone) areas and letter (binary) areas of the original so that the binary areas are scanned in the binary mode, and the halftone areas are scanned in the halftone mode. Note: This function is available only when the optional image processing unit is installed in the scanner. When binary areas and halftone areas are not separated clearly, segmentation may not be achieved.
SCANNER FEATURES Resolution Function Sets vertical and horizontal resolution independently at 60, 75, and 100 to 800 dots per inch (dpi). The higher the resolution, the finer the detail. However, a high resolution image requires much more memory and processing time than a low resolution image. Note: When the resolution is set at more than 400 dpi, the maximum scanning width is less than 304 mm. Maximum resolution is 600 dpi in the Document Feeder Mode.
SCANNER FEATURES Brightness Function Adjusts the brightness value between 1 and 255. A high brightness setting results in a lighter overall image, while a low brightness setting results in a darker overall image. Usage When scanning a dark image, the darker area may display as deep black, even though it has gray scales. When this occurs, increase the brightness setting to allow the shades of to gray appear.
SCANNER FEATURES Gamma correction Function Selects the following gamma correction settings: Normal - emphasizes contrast slightly to improve a scanned image. Sharp - emphasizes contrast to sharpen an image. Smooth - weakens contrast to soften an image. Linear - outputs an image as scanned. User defined - loads user gamma correction curve into the scanner. Usage Select one of the above settings, depending on your original and output device.
SCANNER FEATURES Binary filter Function You can use the following binary filters for binary scanning: Noise elimination - eliminates independent black or white dots. Smoothing - flattens uneven dots. Thickening black lines - thickens thin lines. Edge extraction - extracts outlines of the image. Usage Use these filters as shown below. Noise elimination Use this filter when scanning a document that has been copied several times. Black dots in a white area and white dots in a black area are eliminated.
SCANNER FEATURES Parameter download Function Downloads a gamma curve and a dither pattern to the scanner. You can modify the scanned image with your gamma curve and convert it to binary using your dither pattern. ☛ Refer to your software manual for information on how to download these parameters to the scanner. Document size detection Function The scanner automatically detects the size of originals placed on the document feeder.
GLOSSARY GLOSSARY ACRONYMS This section contains a list of the acronyms you may use while working with the scanner and the scanner documentation. ADF Automatic Document Feeder dpi dots per inch I/O Input/Output LED Light Emitting Diode MB Megabyte PC Personal Computer ppm pages per minute RAM Random Access Memory ROM Read Only Memory SCSI II Small Computer Systems Interface type two.
GLOSSARY TERMS This section contains a list of the terms you may use while working with the scanner and the scanner documentation. G-2 application Software program, or programs used to process information. asynchronous Data communication transmissions that are controlled by start and stop characters, causing the time intervals between the transmission of data blocks to be unequal in length.
GLOSSARY dpi Dots per inch. The number of dots that scan in an inch. These are used to form a character or graphic on the scanned page. drivers Software used to provide scanner characteristics. image area Area of the scanned page that can contain graphics or text. initialize Setting all computer system information to the starting or default values. landscape Orientation in which graphics and text are scanned parallel to the long edge of the page.
GLOSSARY raster graphics Graphic created using a pattern of dots. Raster image processor Processor board (RIP) that builds a raster image that is passed to the scanner. rasterization Transformation of an image onto a page using bitmap dots. resolution Number of dots per inch (dpi) or spots per inch (spi). The greater the number of dots or spots per inch, the higher the resolution and the clearer the image. The terms dots, spots, and pixels are synonymous.
Part number G4058600A Printed in Japan
