4 Maintenance
4--26
F--9999--8 Build 8 Issue 1
4.2.5 Paper Stocks
The ability of the machine to produce high quality work with a minimum of scrap at a high net rate is very
much dependent on the type and condition of the index paper being used. Although the machine will do a
good job on a wide range of sheet sizes and paper weights, the following factors should be considered in
order to realize the best production and highest profit from the operation of the Scotty 5000:
1. Bonding Ability of the Paper Stock.
Although the plastic tab films used to produce indexes are very high in quality and will bond well to most
types of paper stocks, there are several factors which make some papers less desirable for indexes.
Some papers will not allow a good bond under any condition----clay filled stocks, coated stocks, high rag
content papers, etc. Some stocks will bond well to one side and not to the other. Some stocks will bond
satisfactorily when the seal timer is set for a longer time period. FOR BEST RESULTS IN QUALITY OF
BOND AND HIGH NET PRODUCTION RATES, USE PAPERS WHICH BOND EASILY.
2. Flatness of the Sheets.
By the time indexes reach the plastic tab machine they have already been run through two or three other
machines, have picked up moisture from the printing operation and, in many cases, have been poorly
stored so by the time they reach the plastic tab operation, the paper is in very poor condition. There are
several things which can be done to improve the condition of the paper stock. First, it will pay to select
papers which tend to remain more stable after several operations. If possible, it is desirable to have
printing, storage and index tabbing in in humidity controlled atmosphere. If this is not possible, then it
may be desirable to cover the jobs with plastic between operations. Sometimes a “curl” will cause
problems in feeding and sometime it will not, depending on the position of the curl. Under the normal
procedure for producing indexes, the producer prints the full bank of tabs in sequence. This creates a
problem since it requires that the paper be loaded with a certain side up for a particular tab position. In
order for the paper to feed properly, it may be necessary to hand--roll the stock before loading when
running some of the tab positions. On larger jobs this condition can be eliminated by changing the
procedure in plate making and printing.
Example: 5--tab bank A ---------- B ---------- C ---------- D ---------- E----
The normal procedure is to make 2 plates and print as follows:
SIDE ONE---- PLATE ONE
-- -- A -- -- -- -- -- B -- -- -- -- -- C -- -- -- -- -- D -- -- -- -- -- E -- --
SIDE TWO ----PLATE TWO
-- -- E -- -- -- -- -- D -- -- -- -- -- C -- -- -- -- -- B -- -- -- -- -- A --
An improved procedure for printing larger runs to allow the indexes to be run
with either side up when plastic tabbing:
Divide the paper into two equal lots.
Make two plates and print as follows:
SIDE ONE---- PLATE ONE----FIRST LOT
-- -- A -- -- -- -- -- B -- -- -- -- -- C -- -- -- -- -- B -- -- -- -- -- A -- --
SIDE TWO----PLATE ONE----FIRST LOT
-- -- A -- -- -- -- -- B -- -- -- -- -- C -- -- -- -- -- B -- -- -- -- -- A -- --
SIDE ONE----PLATE TWO----SECOND LOT
-- -- E -- -- -- -- -- D -- -- -- -- -- C -- -- -- -- -- D -- -- -- -- -- E -- --
SIDE TWO----PLATE TWO----SECOND LOT
-- -- E -- -- -- -- -- D -- -- -- -- -- C -- -- -- -- -- D -- -- -- -- -- E -- --
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