In large format scanning, a physical, large format document is converted into digital form. The document is often converted into a high-quality TIFF, PDF, JPG file or CAD image.
What are the advantages of having a digital version of large documents?
- Makes records easier to access
- Allows real-time collaboration on a project
- Saves storage space
- Can be searched instantly
- Keeps files and formatting consistent across the organization
- Saves time and money
- Contributes towards the environment
How is large format scanning done?
Large-sized documents are carefully picked by the document scanning service in their marked and tracked vehicles. In their facility, the documents are sorted with utmost care to ensure security. Now, the bigger documents are turned into easily accessible digital files using large format scanners. The electronic files are returned to the clients via hard drives, USB drives or CDs.
What constitutes a large format document?
A document that is 297mm X 420mm (11.7 X 16.5 inches) or A3 in size or more is classified as a large format document.
How are files greater than A0 size scanned?
In the US, standard US architectural drawing size ARCH A, ARCH B, ARCH C and ARCH D are used. Most common large format scanners come in sizes such as 24-inch, 36-inch and 42-inch, which can easily accommodate standard US paper sizes.
| Standard US Architectural Drawing Sizes | Size | |
| (mm) | (inches) | |
| ARCH A | 228.6 x 304.8 | 9 x 12 |
| ARCH B | 304.8 x 457.2 | 12 x 18 |
| ARCH C | 457.2 x 609.6 | 18 x 24 |
| ARCH D | 609.6 x 914.4 | 24 x 36 |
| ARCH E | 914.4 x 1219.2 | 36 x 48 |
All these document sizes can be easily scanned using large format scanners
What types of documents require large format scanning?
- Building Plans or Drawings
- Topographic Maps
- Manufactured Product Design
- Site Plans
- Circuit Diagrams
- Engineering Designs
What are the top 5 benefits of large format scanning?
- Prevents large documents from getting damaged
- Allows a better look at plans and device design
- Helps preserve files in high quality resolution
- Saves storage space
- Allows changes and addition to the design
How are large documents scanned?
Step 1: Unfold the large document and make it lie flat for scanning.
Step 2: Align the document to go straight into the scanner.
Step 3: Choose the optical resolution, which is usually 300dpi.
Step 4: Select between Black & White, Gray Scale and Full Color scanning.
Step 5: Choose appropriate file format, such as PDF, JPEG or TIFF.
How to prepare a large document for scanning?
Step 1: Inspect the document for weak spots and breakages.
Step 2: Fix the paper with document tape.
Step 3: Take care of cracks and folds.
Step 4: Place historical and fragile documents in protective, clear, carrier sheets.
What are the best formats for different documents?
PDF: Great for both texts and images.
JPEG: Best for documents/drawings that need to be modified in Adobe Photoshop.
TIFF: Best for achieving the original image quality of subjects like drawings and photographs.
CSV and XML: Suitable for documents with image file format.
How can one ensure security during large format scanning?
Choose a document scanning and digital storage service provider that is fully insured and 100% HIPAA & FACTA compliant. They will ensure that all documents are kept confidential and secure.
What are the different capture techniques of scanning?
There are basically 3 types of capture techniques:
| 1. | Bitonal | Two tone scan, black and white | Used for text and printed document |
| 2. | Grayscale | Palette with around 256 gray tones | Great choice for older discolored records |
| 3. | Color | Palette with thousands of colors | Good for diagrams, maps and illustration |
How can I scan maps?
When scanning maps, choose grayscale and color capture techniques to achieve a high level of color accuracy.
What scanner is used to scan large documents?
Wide format or large format scanners are used to scan large documents. There are two types of scanning technologies used in large format scanners:
- Contact Image Sensor: CIS is suitable for art work and photographs.
- Charged-Coupled Device: CCD is suitable for technical drawings on thick media.