How do I reduce scan file size when the resolution is already 200 dpi?

Canon PIXMA Manuals MG2900 series Resolution
Resolution The data in the image you have scanned is a collection of dots carrying information about brightness and color. The density of these dots is called "resolution", and resolution will determine the amount of detail your image contains. The unit of resolution is dots per inch (dpi). Dpi is the number of dots per inch (2.5 cm). The higher the resolution (value), the more detail in your image; the lower the resolution (value), the less detail.

How to Set the Resolution You can set the resolution in Resolution on the (Scanning from a Computer) tab of the Settings dialog.
Appropriate Resolution Settings Set the resolution according to the use of the scanned image.
Item Type Use Color Mode Appropriate Resolution Color photo Copying
(Printing) Color 300 dpi Creating a postcard Color 300 dpi Saving to a computer Color 300 dpi Using on a website or attaching to e-mail Color 150 dpi Black and white photo Saving to a computer Grayscale 300 dpi Using on a website or attaching to e-mail Grayscale 150 dpi Text document (document or magazine) Copying Color, Grayscale, or Black and White 300 dpi Attaching to e-mail Color, Grayscale, or Black and White 150 dpi Scanning text using OCR Color or Grayscale 300 dpi Important

• If you double the resolution, the data size of the scanned image quadruples. If the file is too large, the processing speed will slow down significantly, and you will experience inconvenience such as lack of memory. Set the minimum required resolution according to the use of the image.

Note

• When you will be printing the scanned image by enlarging it, scan by setting a higher resolution than the recommended one above.

change print grey scale to 2 color.

You're probably scanning at a high DPI or resolution. Try scanning at a lower DPI or shrinking the actual dimensions of the image in an image editing program.
File format is important also. .jpg files are compressed and take up far less space than .bmp files, for instance.

Hi there,

Scanning in gray scale alone will not bring down the scannned documents size alone. In your scan settings there should be a setting whereby you lower your DPI (dots per inch) or scan resolution. The standard DPI is usually about 300. Try lowering it to about 100 and check the scanned document size again. Lower your DPI until you reach the appropriate document size for emailing etc.


Best wishes,
Graemevm

Welcome to Fixya!

Adjust the Scan setting to the defalult/appropriate resolution. See guidelines below.

Documents:

300 dpi black-and-white or 200 dpi grayscale or color


Documents of poor quality or that contain small text:

400 dpi black-and-white or 300 dpi grayscale


Photographs and pictures:


100-200 dpi color or 200 dpi grayscale



Thank you for using Fixya. Have a great day.

Jas247

The dpi (dots per inch) is how detailed the scanner makes the image, higher dpi equals more pixels to describe the image. Compression is a method (there are many kinds) to decrease the graphic file size to a more manageable size for power points, emails etc. I would suggest scanning at a high DPI until you are happy with the image and then try to save it as a compressed jpeg. It would be better to separate the text from the images but I'm not sure of your layout. You can usually view the image in a graphic viewer and save or export with options to decrease the file size.

You can try to update your printer driver by downloading the Lexmark X7170 driver from the Lexmark website at http://bit.ly/fWPweq. Select your operating system, download and execute the file.
You can also try to decrease the scan resolution. Launch Lexmark All-In-One Center application on your computer. Select Scan mode > See More Scan Settings > lower the scan resolution value to 200 or 150 dpi. Note: This will decrease the scan file size and affect the scan output.
Or you can use a third party scan software to decrease scan file size. You can search the web for free scan softwares.

Resolution and color depth are the 2 main factors that determine the size.
Scan in black & white, and reduce the resolution to 150 dpi, that should give you very small PDFs.

I scan text pages at 30kb with my HP 5610 in PDF.

The scanner produces a "picture" of the document, much as if you laid it flat on a table and took a picture of it with your digital camera. If you did this, your .jpg from the camera would be several hundred K at a minimum - comparable to the file size off the scanner. That's why the file is so big, it contains a picture and not text data - even though it's still a .jpg file.
If you reduce the scan resolution you will save space, but at the expense of legibility of the document image. To get it down to the smallest possible size, you will need to run the scanned image through OCR ( Optical Character Recognition ) into a Word document for example, and then print it out to a .pdf file. If you have a clean source document with few graphics this isn't as difficult as it may seem. Microsoft Office has an excellent OCR process known as Document Imaging. You need to carefully proof read the result but with a clean input Document Imaging is amazingly accurate in Office 2007.
In short, there is no easy solution to your problem.

yes you can reduce it by selecting the resolution. basically you
1. select the dpi as 200*200. because it will give better resolution. No need for going to 600 *600 for text document.
2. you try to crop out (select the particular area of the image).

you try these. If it is not solved you can mail me at [email protected].