Tuesday, June 30, 2009

Media characteristics and environmental requirements

Private medium Number of users Requires equipment Requires light control Requires room control Makes sound Utilized in one sitting Carrel beneficial Requires room
Printed  page 1 No No No No No No No
Microforms 1 Yes No No No No Yes No
Slides or  flimstrips (silent) 1 Yes No No No Yes Yes No
Group Yes No No Yes Yes Yes No
Slides or  filmstrips (sound) 1 Yes No No No Yes Yes No
Group Yes No No Yes Yes No Yes
Audio recording disk and tape 1 Yes No No Yes Yes Yes No
Group Yes No Yes Yes Yes No Yes
Motion picture film (sound) 1 Yes No No Yes Yes Yes No
Group Yes Yes Yes Yes Yes No Yes
Television 1 Yes No No Yes Yes Yes No
Group Yes No Yes Yes Yes No Yes
Flat visuals (e.g. maps, charts,&nbsp pictures, etc.) 1 Yes No No No Yes No No
Group Yes No No No Yes No No
Overhead transparencies Group Yes No No No Yes No Yes
Computers1 Yes No No Yes
No
Yes &
 No
Yes No
Group Yes No No Yes No Yes &
No
No No
Cabeceiras, James. “The Multimedia Library: Materials Selection and Use.” 3rd ed. San Diego: Academic Press, 1991.

Monday, June 29, 2009

Non-print equipment & services: Telefacsimile

  • Oldest office automation technology (1800’s)
  • mid 1960’s Carterfone court decision, no longer illegal to connect equipment not owned by telephone company to phone system
  • Fax appeared in 1842, four years after Morse Code
  • Fax is used for document delivery/interlibrary loan, especially with acquisition requirements and periodicals. This speeds up the process in receiving articles. The machine has a built-in scanner to scan information. There should be library policies regarding who is able to use the machine, and whether there will be fees. Faxing takes longer, which added to its unpopularity.
  • 1980: Group 3 fax standard set by Consultative Committee for International Telephone and Telegraphy (CCITT ) now International Telecommunications Union-Telecommunications Standard Sector (ITU-T), an advisory organization that is part of the United Nations
  • Group 3 is the current standard, all fax machines currently on the market are Group 3 compatible
  • Group 1 and 2 are both now obsolete; it would take 6 and 3 minutes respectively to fax a page, whereas the Group 3 standard is 1 minute
  • 1984 Group 4 fax standard set
  • Applies only to fax machines that operate over digital phone lines
  • For co-operations, some interface with computer or phone. Depending on the speed of the machine, a page takes 30-40 seconds to transmit.
  • A document suitable for faxing may be either paper or electronic
  • If paper, a scanner needed to convert document to digital form. The scanner is built into the fax for the electronic signal to be sent over the lines. If the electronic form is on a computer, a fax can be sent via that. It should be noted that the use of a fax machine has not been replaced.

Basic fax features
When purchasing a fax machine, some features to consider are:

  • automatic step-down
    If a fax is stopped, the machine slows down and connects again.
  • automatic send and receive
    This allows the machine to operate without supervision.
  • delayed dialing
    Automatic redialing can be programmed for later in the day, or programmed to send a fax at a later time.
  • one-touch dialing
  • coded dialing
    These two features are similar to speed dialing.
  • automatic re-dial
    Use this feature if unable to send a fax.
  • document feeder
    Allows document to feed through sequentially
  • management reports
    Reports details of faxes sent and received.
  • memory
    Stores images to send or receive at a later time.
  • broadcasting
    Saves time by sending faxes to more than one number at a time.

Types of fax machines

  • Thermal paper (disappearing from market)
    This was the earliest machine back in the 1980s. They were virtually indestructible with paper coated with heat reacting chemicals. There was no need for ink. The image, however, would disappear over time, or with heat exposure. The machine would be accompanied by a telephone receiver.
  • Thermal film
    Uses page width film ribbon, thermal in roll.
  • Inkjet
    Similar to an inkjet printer.
  • Laser
    Common in combination, has most archival potential
    Variety of configurations
    o Stand alone
    o Combination

Fax/photocopiers/scanners
Photocopiers

  • Dry process photocopying invented 1938 (xerography)
  • 1st Xerox copier 1959
  • Xerox patents in force until mid-1970s
  • 1960s liquid toner copiers inferior to Xerox but cheaper. Competition was available after mid-1970s.

Most combination photocopiers are now in use. Anything a photocopier can do, the internet and/or printer can do just as well. Photocopiers are still largely used in libraries, all using the dry process.

Selected features
It should be noted that photocopiers are not usually sold for public use.

  • automatic document feeder
  • recirculating document feeder
    creates double sided documents
  • bypassfeeds in a single page
  • duplex
    automatically copies and prints double-sided
  • enlargement/reduction
  • exposure control
    accounts for colour pages, photo light, differences
  • sorter
    Trays sorting individual copies.
  • finisher
    Staples and/or hole punches documents

Be aware of a photocopier’s durability. Predict how much use it will receive. Have a basic machine for public use - this will see less problems. Have visual instructions to make it fool and idiot proof. Some libraries have machines with coin boxes for use – but this costs extra.

Classes of copiers

  • Personal copiers (Occasional use)
    o up to 750 copies per month
    o 8-10 copies per minute
  • Low volume
    o 2,000-20,000 copies per month
    o less than 20 copies per minute
  • Medium volume
    o 20,000-50,000 copies per month
    o 20-50 copies per minute
  • High volume
    o 50,000-150,000+per month
    o 50-120 copies per minute
    As a rule, the larger the institute, the higher the volume copier purchased.

Choice factors

  • Machine reliability
  • Dependability of vendor service
  • Volume of copying
  • Special features required
  • Special features useful enough to be worth the cost
  • Durability
  • Buttons
  • What will the copier be primarily used for?
  • Will the features be worth the money?

Rent, lease, purchase, copy service
Rent
o no long term investment or financial commitment
o full service responsibility on vendor
o machine may not be new
o PCs and low volume not usually available
o medium volume annual or 2 year contracts with early termination policy
Lease
o like renting but locks in for longer term
o imposes penalties for early termination
o costs less than renting

Do you rent (1-2 years), lease (2+ years) or purchase a photocopier? They don’t last forever. Service can be included in rent or lease charges.
Purchase
o usually only for medium and high volume
o consider only if very reliable maintenance and service and can pay it off in no more than 4 years
Copier service
o copier provided at no cost in return for proceeds or a percentage of proceeds
Institutions generally purchase machines as they receive the money made from its use.

Friday, June 26, 2009

Non-print equipment & resources: Equipment resources

Cabecceiras, James. The multimedia library: materials selection and use. 3rd ed. San Diego: Academic Press, 1991.

infoCom: International Communications Industrial Association Inc. AV products.
http://catalogs.infocommiq.com/AVCat/CTL1642/index.cfm

Media & Methods Magazine Online: 2003 Buyers’ Guide & Reference Dictionary
http://www.media-methods.com/bg/index.php

Post, Richard. “Life-span Obsolescence, and Depreciation in the Management of Educational Technology.”
http://www.springerlink.com/content/m0t1x54008n1k501/
Article reprinted from Tech Trends, Sept. 1999 (Vol. 43, No. 4) Contains table of predicted obsolescence of a variety of equipment based on survey of 12 Ohio universities.

School Executive Magazine Online: 2000 Buyers’ Guide
http://web.archive.org/web/20030803205308/http://www.schoolexec.com/bg1.html

Also search EBSCOHost for relevant articles.

Dealer Web Sites
Inland AV
http://www.inland-av.com/
Canadian dealer.

Winnipeg Audio-Visual
Local dealer

Listservs
Edtech
http://www.h-net.org/~edweb/
Topics include – notable educational hardware and software, as well as junk one should avoid.

LM Net
http://askeric.org/lm_net/
Dedicated to school library media specialists worldwide, and to people involved with the school library media field. Archives searchable at http://www.eduref.org/

Media-L
http://listserv.binghamton.edu/scripts/wa.exe?A0=MEDIA-L
Focuses on media literacy. Serves as a network for people in the media services profession to ask questions and discuss new procedures or services.

Wednesday, June 24, 2009

Calculating reader/printer costs

For many years, working with information from Buyers Laboratory, Inc., LTR has suggested that the way to determine the real cost-per-copy for prints from a photocopier is to divide the cost of the machine including service contracts and other easily identified direct costs by this number of copies produced by that machine during a five year period. (Five years is an arbitrary period chosen to fully depreciate the machine.) The dividend of this calculation is then added to the cost-per-copy for ma trials only to arrive at a figure that recognizes that you can’t make copies unless you have the machine. Cost-per-copy calculations of this type are done for a range of photocopiers with the results used to select the most appropriate machine for the job to be done. It is not unusual for a machine with a high initial price to be the least expensive on a cost-per-copy basis for a very high volume user and vice versa. Similar calculations can be done with microform reader/printers to determine the real cost for r/p copies and to help in determining the most appropriate machine.

How much should a library charge for r/p copies?
The calculations outlined above could also be used to determine the price to be charged for making r/p prints. A few libraries already use this strategy for pricing photocopies and r/p copies. After determining the real cost-per-copy, these libraries set the price accordingly and retain a portion of the receipts in a sinking fund that can be used to purchase a new machine when the present machine wears out. Libraries that are able to arrange their finances in this way are not faced with large budget requests when a new machine is needed. The users also benefit by having good equipment available.


Several months ago, the editor was in contact with a college librarian who is in charge of an extraordinarily active library microform facility that provides r/p copies for less than a nickel a print. The library’s reader/printers are so heavily used that they must be replaced periodically. The charge covers the cost of supplies and little else so when the machines wear out, the replacement must be a capital expense in that year’s budget. With this volume of copying, if this library were to raise its rates only modesty it could generate enough revenue to replace the machines as they wear out. Most libraries will probably have the opposite problem-low copy volume-so that the price charged per copy will never fully pay for the machine. These calculations might be useful when trying to justify for a price increase or when trying to explain why r/p copies are more expensive than ordinary photocopiers.

Library Technology Reports
July-August, 1991, p. 413.

Tuesday, June 23, 2009

Non-print equipment & services: Microforms

Required Reading:
Choosing microform readers and reader/printers
South Carolina Department of Archives and History Archives and Records Management division
http://www.state.sc.us/scdah/NINE.PDF

Pros
Conserve space
Wide range of materials
Improved services
Easily converted to print with reader-printer
Less mutilation
Easily replaced


Cons
Specialized equipment/environment required
Equipment maintenance
Variety of standards
Lack of colour
Lack of bibliographic control
User resistance

Microform
An optical information storage medium that contains photographically reduced images.

Microfilm
16mm width of choice for business-oriented applications, technical and industrial libraries
35mm most common size in libraries

Microfiche
A card-shaped sheet of photographic film, usually 3 x 5 or 4 x 6 inches in size, designed to store miniaturized text and/or microimages arranged in a two-dimensional grid pattern. Various formats exist, but ISO recommends 75 x 125 mm (48 frames in four rows of twelve) or 105 x 148 mm (60 frames in five rows of twelve). Although each sheet usually includes a title, index number, or other heading across the top which can be read without magnification, the text itself can be read and copied only with the aid of a microform reader-printer machine. ODLIS
http://lu.com/odlis/index.cfm

Micro-opaque
A sheet of opaque material, such as paper or card stock, bearing miniaturized text and/or microimages in a two-dimensional grid pattern, which can be magnified and copied only with the aid of special equipment. Microform reader-printer machines are usually available in libraries with microopaque holdings for viewing and making hard copies. ODLIS
http://lu.com/odlis/index.cfm

Silver gelatin
Most popular camera film for source department microphotography
Also known as “silver halide microfilm”
Archival
Inappropriate storage can result in redox blemishes


Diazo
Intended for exclusively for duplication and is most widely used type of film for duplication
Depending on dye used will appear black, blue or sepia
Some types long-term (100 year) potential; some types medium-term (10 year) potential
Will eventually fade, even if stored in the dark. Prolonged exposure to light accelerates fading.

Vesicular
Uses a process involving exposure to ultraviolet light and development by heat
Limited to duplication function
Normally results in reverse polarity of microform being duplicated and most widely used in COM applications where the master is positive and negative working copies are desired
Readily identified by their beige, gray or light blue colour
Some long-term; some medium-term potential
May produce hydrochloric acid

ANSI levels of stability

ArchivalIndefinite
Long-term100 years
Medium term10 years

Monday, June 22, 2009

Non-print equipment & services: Tripod movements

Dolly: to move the camera and tripod (on wheels) toward or away from the subject.
“Dolly in” or “Dolly out”






Truck: to move the camera laterally (on wheels) to the left or right
“Truck left” or “Truck right”









Pan: a horizontal movement of the camera only (While the tripod remains stationary)
“Pan left” or “Pan right”







Tilt: an up and down movement of the camera only (while the tripod remains stationary)
Both panning and tilting adds variety to the image.







Zoom: a movement of the camera le ns to make the image larger and closer or the image smaller and further away
“Zoom in” or “Zoom out”






Tips:
  • When doing any of these movements, be sure to move slow and steady.
  • Plan the movement ahead of time.
  • Do another take without a movement, just in case.
Composition tips
To avoid boring straight-on shots, shoot from a side angle.














To avoid cutting off the top of subject’s head, give some “head room”.
















To avoid an unbalanced shot, center subject closer to the middle of the frame.



To avoid your subject running into a “wall”, give some “lead room”.






Terms
Head room:
the amount of space on top of subject
Lead room: the amount of space in front of subject

Wednesday, June 17, 2009

Non-print equipment & services: Video camcorder & digital camera comptency

Video camcorder competency
As a library technician you may be called upon to videotape events such as school pageants, awards ceremonies, author readings (with the author’s permission), etc. At the very least you will be expected to be able to show users basic video camera operating techniques.

Digital camera competency
The Sony Mavica MVC-FD73 stores images on high density floppy discs. Storage devices used by other digital cameras include Compact Flash, Secure Digital and Multimedia Cards, Memory Stick, Microdrive, etc. Digital images can be imported to web pages, PowerPoint presentations, word processing documents, etc.

If you require information on transferring files see:
http://web.archive.org/web/20031209014843/http://www.tech4learning.com/snacks/pdfs/transferringimages.pdf

Additional information on digital photography is available on the following sites.
Curtlin, Dennis P. Short courses in digital photography.
http://www.shortcourses.com/index.html
A quick course on many aspects of digital photography.

Kodak Digital Learning Center
http://webs.kodak.com/US/en/digital/dlc/
A collection of online “textbooks” that offer step-by-step tutorials on digital imaging.

Nice, Karin and Gerald Jay Gurevich. How digital cameras work.
http://www.howstuffworks.com/digital-camera.htm

PCPhotoREVIEW.com
http://www.pcphotoreview.com/defaultcrx.aspx
Product reviews written by professionals and consumers. There are also free mini courses on digital photography, ongoing chat rooms, and other features.