A Hybrid Systems Approach to Preservation of Printed Materials

Figures


Figure 1

                      Attributes of Micrographics

         Advantages                               Disadvantages

-- relatively low cost                    -- slow retrieval speed
-- recognized archival medium             -- use can cause wear
-- inexpensive reader                     -- integrity of manual files
-- most cost-effective grayscale storage  -- single-user access                                                          is a problem
-- accepted as a legal medium             -- less than ideal output quality
-- excellent compaction                   -- resolution loss with
-- standards for creating,                      succeeding copies
   processing, duplicating, storing,
   and reading exist

Figure 2

                     Attributes of Digital Imaging

    Advantages                                        Disadvantages

-- excellent record access, distribution,        -- relatively high but
   and transmission                                 decreasing cost
-- multi-user simultaneous access                -- relatively new  technology
-- file integrity                                -- permanent, but not
-- improved quality possible through electronic     archival, storage
   image processing (restoration and enhancement)   medium
-- high-quality printed output                   -- not yet accepted as
-- no degradation on successive copies              legal reproduction
    (each copy is as good as the original copy)  -- implementation and
-- easily reformatted (cut and paste)               operating costs
-- OCR to text possible                             increase in
-- electronic links to provide retrieval of         direct proportion to
   individual pages                                 quality of captured
                                                    image
                                                    (resolution)

Figure 3

                       Attributes of Optical Disc

        Advantages                              Disadvantages
-- high speed retrieval                  -- high (but declining) cost
-- longevity 20 years                    -- relatively expensive
-- preserves file integrity                 retrieval systems required
-- multi-user access                     -- not yet cost-effective for
-- no wear during usage (non-contact        storage of grayscale page images
   read)                                 -- excellent compaction
-- excellent prospects for permanent     -- not yet accepted as legal
(not archival) storage                      document storage medium

Unavailable

[Figures 4-8 consist of non-textual material unavailable in this electronic version]

Figure 9a

                    Preservation Microfilming System

         Single Camera, Low-Speed Processor--Costs to Purchase
Item                                    Cost    #  Total Cost

Camera (used)                        $20,000    1   $20,000
Camera ( new )                      $100,000
Book cradle                           $5,000    1    $5,000
Film processor (low)                 $15,000    1   $15,000
Film processor (med)                 $40,000
Film processor (high)               $100,000
Densitometer                          $3,000    1    $3,000
Microscope                            $1,500    1    $1,500
Film printer                         $10,000    1   $10,000
Inspection reader                     $2,000    1    $2,000
Misc. inspection equipment              $400    1      $400
Film winder                             $500    1      $500
Ultrasonic splicer                    $3,000    1    $3,000
Darkroom support equipment            $3,000    1    $3,000
Sensitometer                          $2,000    1    $2,000
Darkroom supplies                       $550    1      $550
Plumbing                              $1,000    1    $1,000
A/C & humidity                         $3,00    1    $3,000
Construction & supplies               $4,000    1    $4,000

Total                                $73,950

Figure 9b

        Multiple Camera, Low-Speed Processor-- Costs to Purchase

Item                                    Cost    #  Total Cost

Camera (used)                        $20,000    5  $100,000
Camera (new)                        $100,000
Book cradle                           $5,000    5   $25,000
Film processor (low)                 $15,000    2   $30,000
Film processor (med)                 $40,000
Film processor (high)               $100,000
Densitometer                          $3,000    2    $6,000
Microscope                            $1,500    1    $1,500
Film printer                         $10,000    2   $20,000
Inspection reader                     $2,000    2    $4,000
Misc. inspection equipment              $400    2      $800
Film winder                             $500    2    $1,000
Ultrasonic splicer                    $3,000    2    $6,000
Darkroom support equipment            $3,000    1    $3,000
Sensitometer                          $2,000    1    $2,000
Darkroom supplies                       $550    2    $1,100
Plumbing                              $1,000    2    $2,000
A/C & humidity                        $3,000    2    $6,000
Construction & supplies               $4,000    2    $8,000

Total                               $216,400

Figure 9c

                    Preservation Microfilming System

       Multiple Camera, Medium-Speed Processor--Costs to Purchase

Item                                    Cost    #  Total Cost

Camera (used)                        $20,000   10  $200,000
Camera ( new )                      $100,000
Book cradle                           $5,000   10   $50,000
Film processor (low)                 $15,000    1   $15,000
Film processor (med)                 $40,000    1   $40,000
Film processor (high)               $100,000
Densitometer                          $3,000    2    $6,000
Microscope                            $1,500    1    $1,500
Film printer                         $10,000    3   $30,000
Inspection reader                     $2,000    2    $4,000
Misc. inspection equipment              $400    2      $800
Film winders                            $500    3     $1500
Ultrasonic splicer                    $3,000    3    $9,000
Darkroom support equipment            $3,000    2    $6,000
Sensitometer                          $2,000    1    $2,000
Darkroom supplies                       $550    3    $1,650
Plumbing                              $1,000    3    $3,000
A/C & humidity                        $3,000    3    $9,000
Construction & supplies               $4,000    3   $12,000

Total                               $391,450

Figure 9d

                    Preservation Microfilming System

        Multiple Camera, High-Speed Processor--Costs to Purchase

Item                                    Cost    #  Total Cost

Camera (used)                        $20,000   20  $400,000
Camera (new)                        $100,000
Book cradle                           $5,000   20  $100,000
Film processor (low)                 $15,000    1   $15,000
Film processor (med)                 $40,000
Film processor (high)               $100,000    1  $100,000
Densitometer                          $3,000    3    $9,000
Microscope                            $1,500    1    $1,500
Film printer                         $10,000    4   $40,000
Inspection reader                     $2,000    2    $4,000
Misc. inspection equipment              $400    3    $1,200
Film winder                             $500    4    $2,000
Ultrasonic splicer                    $3,000    4   $12,000
Darkroom support equipment            $3,000    2    $6,000
Sensitometer                          $2,000    1    $2,000
Darkroom supplies                       $550    4    $2,200
Plumbing                              $1,000    4    $4,000
A/C & humidity                        $3,000    4   $12,000
Construction & supplies               $4,000    4   $16,000

Total                               $726,900

Unavailable

[Figures 10-19 consist of non-textual material unavailable in this electronic version]

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URL: http://cool.conservation-us.org/byauth/willis/hybrid/figures.html
Timestamp: Sunday, 23-Nov-2008 15:20:24 PST
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