Chapter 3 Quiz Questions

Question 0

When printing with quickset inks the rigidity rapidly increases during____________. With heatset inks the rigidity increase at ____________.

Answer 0

When printing with quickset inks the rigidity rapidly increases during absorption. With heatset inks the rigidity increases at the chill rolls.

Question 1

When does heatset ink become completely dry?

Answer 1

When it is off press

Question 2

Which type of heatset web offset press employs a floating dyer?

Answer 2

Blanket-to-Blanket

Question 3

Catalytic oxidizers heat the exhaust from a heatset dryer to ______. Thermal oxidizers heat the exhaust to _________.

Answer 3

Catalytic oxidizers heat the exhaust from a heatset dryer to 600-800F. Thermal oxidizers heat the exhaust to 1400-1500F

Question 4

Web temperature can be controlled at the chill rolls by:

Answer 4

Changing the temperature of the water and changing the rate of water circulation.

Question 5

Chill roll tacking increases the attraction between the web and the chill rolls by using what?

Answer 5

Electrostatic force

Question 6

Higher press speed will _______ the dwell time of the web, while longer dryers will ______ the dwell time of the web.

Answer 6

Higher press speed will decrease the dwell time of the web, while longer dryers will increase the dwell time of the web.

Question 7

The web temperature after the last chill roll should be no more than ___F?

Answer 7

75F

Question 8

The order that the chill rolls are plumbed goes:

Answer 8

Last to first, and the first chill roll should cool the web by 40-50%

Question 9

Remoisturizers are used for what type of problems?

Answer 9

Paper growth and static electricity

Question 10

Do news inks dry by absorption and solidification of resins in the chill roll section?

Answer 10

False

Question 11

Chill roll over speed should typically be set to?

Answer 11

1-2%

Question 12

Coated webs normally require ______ dryer temperatures than uncoated webs.

Answer 12

Coated webs normally require higher dryer temperatures than uncoated webs.

Question 13

What are the three benefits of the sine wave produced by the hot air dryer?

Answer 13

• Improved web control
• Prevention of corrugating wrinkles
• Prevention of web flutter

Question 14

What is the boundary layer?

Answer 14

It is the thin layer of air that travels with the web as it moves through the dryer.

Question 15

When using a split web to determine the nose setting, what does an overlap mean?

Answer 15

This means that the former board angle is too low

Question 16

What are the first set of rollers that follow the former board called?

Answer 16

• Guide rollers

Question 17

On a combination folder, what is the correct sequence of folds?

Answer 17

Former fold, jaw fold, chopper fold

Question 18

The guide rollers can be skewed to maintain even _________ on the former.

Answer 18

The guide rollers can be skewed to maintain even tension on the former.

Question 19

How does a jaw folder deliver a folded signature?

Answer 19

With the spine of the signature out , leading.

Question 20

What is the correct location of the collect cylinders?

Answer 20

• After the former but before the jaw folder

Question 21

What is the circumference of a collect cylinder?

Answer 21

It is three times the circumference of the knife cylinder.

Question 22

On a full web press what would a collect cylinder be used for?

Answer 22

For digest size

Question 23

True or False a Ribbon folder uses a collect cylinder?

Answer 23

True

Question 24

What does the double-former fold result in? And what is it common for?

Answer 24

It results in an open head signature and it is common for newspapers

Question 25

Which type of folder most limits the press speed?

Answer 25

The chopper folder

Question 26

Which in-line gluing system is similar to a flexo printing unit?

Answer 26

Pattern Gluer

Question 27

Which perforating device makes angled perforations to direct paper tissues?

Answer 27

Gusset Perforator

Question 28

The double-chopper combination folder is designed to improve what property of the folder?

Answer 28

The speed

Question 29

What is the cutoff dimension for a web press that uses the collect feature?

Answer 29

Half the circumference of the plate cylinder

Question 30

What does the moveable jaw on a jaw folder seize?

Answer 30

It seizes the spine of the signature

Question 31

What combination of folders is required to create a magazine size signature? With a 34 wide web and 22 cutoff

Answer 31

Former, jaw, chopper

Question 32

What combination of folders is required to create a magazine size signature? With a 17 wide web and 22 cutoff

Answer 32

Former and Jaw

Question 33

You are perfecting on a satellite web press where both sides of the web passes through the same printing unit, what is this process called?

Answer 33

Double-ending

Question 34

Which two factors determine the signature size of a web press, when the signature is opened flat?

Answer 34

- the cutoff | - the width of the cylinders

Question 35

What term defines a press that uses independent motors controlled via fiber optic links to a central controller?

Answer 35

Shaftless press

Question 36

Which web offset press configuration requires an S-wrap to print two colours on one side of the web, using a single printing unit?

Answer 36

Blanket-to-Blanket

Question 37

How many units does a blanket-to-blanket press require to print 4 colours on both sides of the web?

Answer 37

4 units

Question 38

What are some benefits for using gapless technology in web offset presses?

Answer 38

Quicker makeready, shorter runs, saves paper

Question 39

What was the name of the first hapless blanket press called?

Answer 39

Heidelberg Harris Sunday press

Question 40

True or false? Gap less blanket presses do not use bearer contact

Answer 40

True

Question 41

The blanket circumference is normally the same measurement as what?

Answer 41

Web cutoff

Question 42

How should blankets be stored?

Answer 42

Flat, face to face

Question 43

What is caused by excessive plate/blanket squeeze?

Answer 43

Dot gain

Question 44

What are the parts of a blanket-to-blanket printing unit?

Answer 44

- plate cylinder - blanket cylinder - inking system - dampening system

Question 45

True or False? When the plate gap is centred in the blanket gap, unwanted ink and water on the plate edges won't transfer to the blanket

Answer 45

True

Question 46

What does improper plate bending cause:

Answer 46

- Misregister - plate slipping - plate cracking

Question 47

Which forms do blankets come in?

Answer 47

- prepunched - premounted onto bars - gapless blankets

Question 48

What determines the amount of squeeze between the plate and blanket?

Answer 48

The total thickness of the plate, blanket and packing sheets on both cylinders

Question 49

If the web is unwinding too _____ the dancer roll will rise, causing ______ braking to be applied.

Answer 49

If the web is unwinding too slow the dancer roll will rise, causing less braking to be applied.

Question 50

What is contained in the splicing arm of the flying paster?

Answer 50

A knife and a pressure roller

Question 51

What is the proper combination of three infeed metering rollers on a web press?

Answer 51

- 2 driven steel rollers and 1 non-driven rubber roller

Question 52

Which splicing method can a splice be made while the press is running at printing speed?

Answer 52

- the flying paster | - zero-speed method

Question 53

A zero-speed splicer can make Both a ____ & ____?

Answer 53

A lap splice and butt splice

Question 54

What uses variable control to control the flow rate of the web?

Answer 54

The infeed metering rollers

Question 55

The strongest, most positive control of the web occurs at which nip point?

Answer 55

Printing units

Question 56

On a box-tilt device, which rollers are fixed and which are movable?

Answer 56

1 and 4 are fixed, 2 and 3 are moveable

Question 57

What are the different types of web break detectors?

Answer 57

- Mechanical - Optical - Pneumatic

Question 58

Which is the most common type of web break detector?

Answer 58

Optical

Question 59

What does the term "fan-out" describe?

Answer 59

Relative Print Width

Question 60

Bustle wheels are used to?

Answer 60

Bring the edges of the web closer

Question 61

On a flying paster splicing system, what actions occur when the first butt switch is activated?

Answer 61

- The acceleration belt drops on the new roll - The next roll rotates into splicing position - The splicing arm presses against the surface of the expiring roll

Question 62

Which splicing method requires the lead edge of the new roll to be held by a policing roll, close to the expiring roll, but not touching, just before the splice is made?

Answer 62

- The zero-speed method