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ANSWER: Since it is a thermal printer it does not have a ribbon to replace.
Seiko SII DPU 414 thermal Printer. For a compact desktop or portable
thermal printer, the DPU-414 is an excellent selection. It incorporates
the STP printer mechanism to ensure silent and high-quality printing of
characters and high-density graphics. And in quadruple-density bit image
mode, 640-dot (maximum) CRT display hardcopy is possible (with
horizontal vs. vertical radio of 1:1).
Printing Method Thermal serial dot printing
Number of dots/line 9 x 320
Paper width (mm) 112
Printing width (mm) 89.6
Max Speed (character/sec) 52.5
Paper path Curved
Character matrix (H x W dots) 9 x 7
Character size(H x W mm) 2.5 x 1.9, 2.5 x 0.9 (Condensed)
Number of columns 40, 80(Condensed)
Character type Extend Graphics Character set, Alphanumeric, International Characters, Katakana Character set
Interface Parallel (36pins Amphenol), Serial (9pins D-SUB)
Input buffer 28Kbytes
Command ESC/P * conformity
Cutting Tear bar
Operating Temperature (°C) 0 to 40
Humidity (%RH) 30 to 80(Non condensing)
Service life (line) 500,000 **
Dimensions (W x D x H mm) 160.0 x 170.0 x 66.5 (printer unit only) ***
When the print cartridge contacts are dirty and the printer cannot detect/communicate with print cartridge.
Clean the contact points on the cartridges with a dry, lint-free cloth.
1. Open the top cover of the printer.
2. Remove the print cartridges.
3. Clean the copper-colored contact points on the cartridges with a damp, lint-free cloth.
Use a dry, lint-free cloth to remove moisture from the contacts.
5. Insert the cartridges back into the printer.
6. Close the top cover.
7. Try printing again.
If you still cant communicate try with new cartridge .
Usually hairs sticking to the underside of the print head causes this.
I gave a solution to an Epson CX6400 user who needed to physically clean his print head. Look this up in the solutions. It involves using folded kitchen roll under the print head with the printer switched off and the head unlocked and free floating.
It would take me ages to type this again so please look this up.
The user had jammed paper and cleared the jam but had paper stuch to the underside of his print head.
That entirely depends on your scan settings. The resolution has a huge impact on file size - doubling the resolution from, say. 150dpi to 300dpi actually quadruples your file size. That being said, your scans are probably saved as BMPs. If you scan to Paint or a proprietary image editor (like Photoshop), then you can save in a compressed format like JPG or PNG and reduce the file size some more.
Bottom line - if you're scanning a full size (8.5x11) page, then less than 2MB per page is pretty decent, especially if the file is a BMP. If these are 4x6 photos, then it's still not bad if you're using a resolution like 300dpi. My digital camera takes photos at 5megapixels and the files are often 1-2MB each, and those are just photos.