Manuals / HP / Computer Equipment / All in One Printer

HP J4580, J4500 Scanned image quality is poor, Original is a second-generation photo or picture

Models: J4500 J4580

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Chapter 8

Error messages appear

"Unable to activate TWAIN source" or "An error occurred while acquiring the image"

◦If you are acquiring an image from another device, such as a digital camera or another scanner, make sure that the other device is TWAIN-compliant. Devices that are not TWAIN-compliant do not work with the device software.

◦Make sure that you have connected the USB Device Cable to the correct port on the back of your computer.

◦Verify that the correct TWAIN source is selected. In the software, check the TWAIN source by selecting Select Scanner on the File menu.

Scanned image quality is poor

The original is a second-generation photo or picture

Reprinted photographs, such as those in newspapers or magazines, are printed by using tiny dots of ink that make an interpretation of the original photograph, which degrades the quality. Often, the ink dots form unwanted patterns that can be detected when the image is scanned or printed or when the image appears on a screen. If the following suggestions do not solve the problem, you might need to use a better-quality version of the original.

◦To eliminate the patterns, try reducing the size of the image after scanning.

◦Print the scanned image to see if the quality is better.

◦Make sure that the resolution and color settings are correct for the type of scan job.

Text or images on the back of a two-sided original appear in the scan

Two-sided originals can "bleed" text or images from the back side to the scan if the originals are printed on media that is too thin or too transparent.

The scanned image is skewed (crooked)

The original might have been placed incorrectly. Be sure to use the media guides when you place the original on the scanner glass. For more information, see Load originals.

The image quality is better when printed

The image that appears on the screen is not always an accurate representation of the quality of the scan.

◦Try adjusting your computer monitor settings to use more colors (or levels of gray). On Windows computers, you typically make this adjustment by opening Display on the Windows control panel.

◦Try adjusting the resolution and color settings.

The scanned image shows blots, lines, vertical white stripes, or other defects

◦If the scanner glass is dirty, the image produced does not have optimum clarity. See Clean the device for cleaning instructions.

◦The defects might be on the original and not a result of the scanning process.

Graphics look different from the original

The graphics settings might not be suitable for the type of scan job that you are performing. Try changing the graphics settings.

128 Maintain and troubleshoot

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HP J4580 Scanned image quality is poor, Original is a second-generation photo or picture, Scanned image is skewed crooked
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J4500, J4580 specifications

The HP J4580 and J4500 series printers are versatile all-in-one devices that cater to both home and small office environments. Designed to deliver high-quality printing, scanning, copying, and faxing capabilities, these models combine functionality with ease of use.

The HP J4580 model stands out with its compact design, making it an ideal choice for users with limited space. One of its main features is the ability to print in color and black-and-white at speeds up to 28 pages per minute (ppm). Additionally, the J4580 boasts a maximum print resolution of 4800 x 1200 optimized dpi, ensuring that both text and images look sharp and vibrant.

The J4500 model, while similar in design, introduces enhanced features suitable for slightly larger workloads. It offers a slightly higher performance, handling printing tasks with even greater efficiency. The J4500 can also print at impressive speeds, providing users with fast output without sacrificing quality.

Both models come equipped with advanced scanner technology, featuring a flatbed scanner that allows for high-resolution scanning to digital formats. The J4580 and J4500 are capable of scanning documents up to 1200 dpi, making it easy to capture intricate details from photos and pages. Moreover, users can copy documents quickly with a one-touch button that simplifies the copying process.

One of the standout characteristics is the built-in fax functionality. The fax modem included in both models can transmit documents at speeds of up to 33.6 kbps, ensuring that important information is sent swiftly. Additionally, they feature a 50-sheet automatic document feeder (ADF) for quicker faxing and scanning of multi-page documents.

Connectivity options are also essential for modern office needs, and both the J4580 and J4500 support USB and Ethernet connections, allowing users to print and share documents seamlessly over a network. Furthermore, wireless connectivity options enable quick access from mobile devices.

Overall, the HP J4580 and J4500 series printers provide comprehensive solutions for daily printing, scanning, copying, and faxing tasks. With their combination of speed, quality, and multifunction capabilities, these all-in-one printers are reliable assets for enhancing productivity in any workspace.