Question about HP 4570C Flatbed Scanner

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Light bar stops too soon

When scanning, my light bar now only advances an inch or so before returning, so it only scans a small portion of the platen. Is this a lubrication issue? Can I fix it myself, or does it need a technician? I have not used this scanner much, but have not had any problems before.

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I assume you are using this with a computer. One thing comes to mind that relates to software. You should be able to do a preview scan of the whole scanner bed, then move the frame to the area you want to scan only, sort of like cropping the picture. If those crop borders are set to less than the whole document, you will get this kind of scan.

Now if that isn't the problem, the scanner likely has a electronic issue unless the scanner has had a nasty fall. If you want to really explore deep and don't mind if it doesn't work afterwards, turn the scanner off and unplug the power. Open it up just enough to access the optical unit and see if it will move the entire length of the scanner without binding where you experience the end of the scan. Go rather slowly and gently so you don't strip the toothed belt if it has one. You will feel a wierd sensation and some resistance as you move it along which has to do with the stepper motor and that's normal. If that works, it's likely it failed on it's own. If it binds where the scan ends, you'll have to investigate whether it's due to a rusty rail (hope not!) or some other obstruction.

Good luck!

Posted on Jul 28, 2009

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When scanning, why does the entire left side of page have a line down it one inch in from txt?


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If the dark portion of the page is out side of the image scanned, then there may be chance of light passing to the scanner through platen glass.Pl. check the top cover and whiteness of the flap.

If the scanning through the PC has the same problem then the SHADING adjust to be done.

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How do you scan?


Open the Applications folder on the hard disk on which MP Navigator is installed, then open the Canon Utilities folder and double-click the navicon.gif MP Navigator 3.0 icon. MP Navigator opens.
2. Point to Scan/Import and click 'Photos/Documents (Platen)'.
macnavscanfirst.gif
3. Place the document face-down on the platen glass, and select 'Document Type'.
How to place the document and Document Type depends on the document to be scanned.
navscandocwindow.gif
How to place the document
Allow 3/8 inches (1 cm) or more space between the edges of the platen glass and the document.
Align a corner of the document with the corner at the arrow of the platen.
macnavscanselectdoctype.gif
  • When you select Color Photo or Black and White Photo, the position or size of the image may not be scanned correctly if you do not leave 3/8 inches (1 cm) or more space between the edges of the platen glass and the document.
  • When you select Color Photo or Black and White Photo, the position or size of the image may not be scanned correctly depending on the document. In such a case, select Document Size such as A4 or Letter according to the document to be scanned.
  • When you select Magazine(Color), the Descreen function will be enabled and scanning takes longer than usual. To reset the Descreen function, disable Descreen in the Scan Settings dialog box.

4. Click 'Specify'... and set the preferences as required.
The Scan Settings Dialog Box opens. Specify the Document Size and Scanning Resolution.
macnavscanscanset.gif
  • When Document Size is Auto Detect or Auto Detect(Multiple Documents), the position or size of the image may not be scanned correctly depending on the document. In such a case, select Document Size, such as A4 or Letter according to the document to be scanned.
5. Click 'Scan'.
Scanning will begin.
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How to change the resolution (Windows)
The precision of printouts can be improved by changing scanning resolution.
The higher the scanning resolution is, the more precise the scanned images are represented, however, the file size gets larger.
The scanning resolution can be changed before scanning photos.
Note: When the scanning resolution is doubled, the image data size will be quadrupled.
When the data size is large, the throughput speed may slow down or may occupy too much of the computer's resources (memory).

<Procedures>
Memo: The following is explained using MP Navigator 3.0 procedures.
To scan using MP Navigator:
1. Launch MP Navigator and click Photos/Documents (Platen) on the Scan/Import tab.
80006642en_05sj00759_en_00.jpg- The window you see varies according to the printer model.
2. When the Photos/Documents (Platen) window is displayed, click Specify.
80006642en_05sj00760_en_02.jpg
3. When the Scan Settings window is displayed, select the resolution in Scanning Resolution.
If necessary, set other items as well.
80006642en_05sj00760_en_03.jpg
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1. Launch MP Navigator and click Open Scanner Driver on the Scan/Import tab.
80006642en_05sj00765_en_01.jpg- The window you see varies according to the printer model.
2. Change the resolution.
According to your purpose, set the resolution in Simple Mode with ease, or in Advanced Mode with a detailed setting.
- To set the resolution in Simple Mode:
(1) Select the Simple Mode tab.
(2) Select the output resolution from the Destination pulldown menu.
If necessary, set other items.
80006642en_05sj00760_en_05.jpg
- To set the resolution in Advanced Mode:
(1) Select the Advanced Mode tab.
(2) In Output Resolution, select one of the preset resolution, or enter the number from 25 to 19200 to specify your favorite resolution.
If necessary, set other items.
80006642en_05sj00760_en_06.jpg
3. Click Scan to start scanning.
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For sure there is a dot or something on the small strip of glass, only when you do it from the feeder.
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You said it also does it when you lay it down on the glass !!??(platen) that should of indicated the drum has a ring around it, but since it doesn't come out on the PC copy then the glass must have a line on it.

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