High Volume Feeding Systems Flashcards
Describe the appearance of a general high volume feeder
Sigs rolled up on a belt on a roll (can be unrolled)
Can fit large amount of signatures in small amount of space
Very expensive
Pockets must be
Filled up
Describe high capacity stream feeders
Huge lines of clamps picking up sigs
Also) pre-insert machines can increase productivity (many different designs
Describe the Toronto Star printing plant (in Vaughn )
- Has chains and clamps one folded side of sigs
- Transports through ceiling to skid
- collating machine manually puts paper together
Can be 100s meters long
2 spools of stitching wires daily
How much does the stitching wire at the Toronto star weight ??
800 pounds
Describe the social high capacity system
Drop into drum instead of chain
Sig dropped in slot
Screw action where pushers push sig
Rotates to get more sigs
Where does stitching come from
Rolled spool
Where does stapling staples come from
Preformed wire
Describe stiching
2 parts (head & clenche)
Describe the stapling process
Wire comes through top
Goes through cleaning tab/reel
Goes through drive into Sticher
Drives wire into stitching head & cuts off to specific length
Then wire is formed into a U shape for staple then Driven into spine
Arms of staple clenched shut using clencher
What’s the ideal staple stich
Both arms are equal length
Describe special stiches
Loop stitch (visually loops stitch out of book) Can be used to put in binder Stitching heads are adjustable Commonly 1-4 stitches in a book Most stitching heads support 4-6 stiches
How many stitches does the GCM sticher support
3 stiches
Describe trimming systems
Most saddle stitches have this module
Come in 3-5 knife trims
Can completely finish book (trim head,foot,face)
What do 2/up books need
At least 4-5 knives
4th knife cuts down the middle
Can you use bleeds when using 4 knife trimmer
NO, instead use 5 knife trimmer
Describe the 2 cycle process trimmer
Clamps come down & holds book
Knife comes up, book comes in, moves past face and knife
Book comes underneath …clamped…h & f trimmed, face edge is clamped & trimmed with face knife
What are the 3 main Delivery systems
Pocket delivery
Belt delivery (spit out into belt)
Stacker - takes multiple books & Stacks automatically
- rotates stack 180 degrees so spines are stacked evenly (spine is thicker than the face)Describe the waste removal process
Trimmer waste gets dropped down in the bottom
Vacuum installed underneath can quickly pick up waste
What are some coming finished products that are saddle stiched
Magazine
Instruction manuals
Adding value means when
Since loss of money in past processes companies must learn to add new functions and services to make up for loss in other services
What’s the purpose of creep
Allowance used in saddle-stitching
Exists b/c paper has thickness (pushes inside sigs out)
Cannot avoids so when trimming you cut
Where does the most creep occur
Center spread
What’s the calculation for creep?
of pgs in book / 4 x calliper of sheet = creep in center
What are some challenging saddle stitched products
Where image crosses over spine
Pocket folder covers
Gate fold covers
Line ups & cross overs
