Improving bar code image DPI for a darker output

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.

DPI (dots per inch) is an output specification and is irrelevant to the camera. The camera puts a value into the field simply because it has to put something there. The DPI is set by the printing program when it prints a picture. A picture printed at 4x6 will obviously have more dots per inch than the same picture printed at 8x10.

As this handset is an old model you need to check the manual for the supported file format, and resolution support. You can check the DNS settings from your service provider.

The following information provides an Overview of the Printer's available Scan Settings. 1. To enter the Scan mode, from the Printer's Main (Copy) Screen press the Menu button.
2. On the two-button selection screen, press the right-hand Scan/E-mail button. Note: If you press the lefthand "Copy" button by mistake you will be returned to the Main (Copy) Screen. You will then have to press the Menu button again to return to the two-button selection screen.
3. The Scan screen consists of three Tabs, with each Tab displaying a number of feature settings. From left to right, the three Tabs are labeled: Basic Scanning, Scan Options, and Image Quality/File Format.
4. When the Basic Scanning Tab is selected, three columns of settings are displayed. The first (left-hand) column of settings contains four "Output Color" selections, including: Auto, Full Color, Grayscale (256G), and Black. The second (center) column of settings displays four scan resolutions. The available selections include: 200 dpi, 300 dpi, 400 dpi, and 600 dpi. The third (right-hand) column of settings displays "2 Sided Original" selections including: 1 Sided, 2 Sided (H to H), 2 Sided (H to T), and More.... If you press More..., a screen displays with two setting selection buttons on the left, enabling you to select either 1 Sided or 2 Sided. If you choose 1 Sided, you can select an original orientation of Head to Top, or Head to Left. If you choose 2 Sided, two additional orientation buttons (Head to Head, and Head to Toe) become available for your selection. Note: To support "2 Sided" (Duplex) Scanning you will need to use the Printer's Duplex Automatic Document Feeder. When changing or viewing More... settings, press the Save button to save setting changes, or the Cancel button to exit the current screen without saving changes.
5. After an Output Color is selected from the first column of the Basic Scanning Tab, and the Image Quality/File Format Tab is pressed, a screen is displayed allowing you to choose and configure the settings for Original Type (Text & Photo, Text, Photo), Image Compression (High, Normal, Low), Contrast, File Format, and Auto Exposure.
- Press the Original Type button to select the most effective scanning for your original image type. Options are Text & Photo, Text, and Photo. - Press the File Format button to select your scanned file format. Options are TIFF/JPEG, JPEG, DocuWorks, and PDF. - Press the Lighter/Darker/Contrast button to adjust scanned image density (lightness and darkness) and contrast. Use the supplied arrows to make the desired setting adjustments. - Press the Image Compression button to set the degree of data compression, used especially with JPEG scans. Options are High, Normal (default), and Low. - Press the Auto Exposure button to enable or disable this scanning feature with the ON or OFF buttons. When changing or viewing settings, press the Save button to save setting changes, or the Cancel button to exit the current screen without saving changes.

What I saw first off is that although the resolution indicates 96 DPI, the file size itself between the 2 examples are drastically different. You are putting raster images into MS Word for publication work, and that is a NO NO. Word was not created for any kind of high resolution printing. It's a glorified text editor that people seem to think is an option for printing. YOU WILL NEVER GET 300 or 600 DPI images out of Word. Ever.
To create your project for printing, you need to use software more suited for the task. InDesign and Quark are examples, but they are very expensive. In my opinion, Publisher would be better for this kind of project and I hate myself for saying that.
Talk to your Printer, find out his specifications for Applications and Linescreen for Printing. The minimum requirement is 280 DPI, but if the image is placed at 100%, 600 DPI is overkill.
Oh, and try to never scan a scan... you are looking for trouble... a little thing called a Moiré pattern comes into play, and it will make you images print NASTY!
I could go on about your post all day long, but if there is anything else I didn't explain, please post again.

You can't.  You could try loading the Adobe professional software, but I do not think it lets you edit PDF's
If the Doc contains words you can OCR (Optical Character Recognition) it (ie read it) edit it an dthen create a new PDF.

Resolution is a hard thing to grasp. I'm guessing the original logo created was either a low DPI and/or a small physical size. For example if you create a 1in x 1in logo at 300 DPI and increase the size to 4in x 4in at 300 DPI - the image does not contain small enough pixels to give a quality image (1 pixel is translated to 4 giving jagged edges). I hope this helps.

You can use Photoshop to reduce Photo size to a minimum size that can be mailed and u can retain the resolution by it. Its afantastic application. Open your image in photoshop and right clik it on the top of the title bar choose image size and change the resoution to 150DPI or lessere but not less than 72 DPI.

R u can go to save as command in the file menu and save it for Web option is better to reduce the size of the image to very smaller one which can be mailed.

Thanks