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Exposures and Quality Control > Processing the Latent Image > Flashcards

Processing the Latent Image Flashcards

1
Q

What may cause an increase in radiographic density?

A

Rack not rolling properly

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2
Q

Which part of the transport system directs a film from the bottom of a rack back toward the top?

A

Turnaround assembly

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3
Q

Which system should be inspected if the development time is too long?

A

Transport system

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4
Q

What applies to a processor with a low workload?

A

High replenishment rate

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5
Q

A problem of light films is traced to the processor. Which of the following processing conditions is not a probable cause?

A

Over-replenishment

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6
Q

The normal development temperature for the automatic processor is?

A

90-95 degrees F

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7
Q

Which major system of the processor would be the most likely cause of films having a brownish appearance?

A

Replenishment system

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8
Q

The overflow of which processor tank must be specially filtered before going into the sewer system?

A

Fixer

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9
Q

The microswitches attached to the entrance rollers activate which major system?

A

Replenishment system

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10
Q

Which major system of the processor is maintained at 120 degrees F?

A

Drying system

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11
Q

What is lacking if films exit the processor with a greasy appearance and feel?

A

Wash

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12
Q

An increase in film fog may be caused by all of the following except?

A

Developer temperature too low

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13
Q

What determines the volume of chemicals pumped into the processor tanks?

A

Length of film

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14
Q

How often is a sensitometric strip run?

A

Daily

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15
Q

What is the speed index tolerance?

A

+ .15

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16
Q

If the developer temperature is too low the film will be?

A

Light

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17
Q

What turns the film around at the top of the processor tank?

A

Crossover

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18
Q

The exposed silver bromide crystals are reduced to metallic silver in the?

A

Developer

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19
Q

Fog on the film may mean?

A

The developer temperature was too high

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20
Q

What squeezes off excess chemicals before the film travels to the next section of the processor?

A

Crossover

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21
Q

Which variables should be controlled in the darkroom?

A

Temperature, humidity, and light

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22
Q

What part of the film contains silver halide crystals?

A

Emulsion

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23
Q

Film storage temperature that are too high could cause which of the following?

A

Fogging

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24
Q

What happens when photons interact with silver halide crystals in the film emulsion?

A

Electrons are freed in the crystals,
Electrons move the sensitivity specks, and
Sensitivity specks gain a negative charge

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25
Q

Approximately how long does it take to develop a film in an automatic processor?

A

45-90 seconds

26
Q

When does the latent image appear on the film?

A

After exposure and before development

27
Q

What reduces the exposed silver bromide to metallic silver?

A

Developing agent

28
Q

What contains potassium bromide?

A

Restrainer

29
Q

What is used as a hardener?

A

Glutaraldehyde

30
Q

What maintains proper PH in the fixer?

A

Buffer

31
Q

What preserves the life of the processing chemicals; maintains balance among developer components?

A

Sodium Sulfate

32
Q

What stops the action of the developer?

A

Activator

33
Q

What is also called hypo, cleaning agent?

A

Ammonium thiosulfate

34
Q

What removes the unexposed and undeveloped silver bromide crystals?

A

Fixing agent

35
Q

What is the chemical used as a developing agent; produces black tones slowly?

A

Hydroquinone

36
Q

What is the chemical used as a developing agent; develops the gray tones?

A

Phenidone

37
Q

Intensifying screens function because of what process?

A

X-ray photons striking the screen produce light photons

38
Q

What is needed to convert a latent image into a manifest image?

A

Develop the film

39
Q

What controls the replenishment rate?

A

Entrance rollers

40
Q

Contaminated developer chemicals must be?

A

Discarded

41
Q

Contamination of the processor chemicals occur when?

A

When the fixer is splashed into the developer

42
Q

What controls the film-feeding rate?

A

Entrance rollers

43
Q

A film with a wide latitude generally has?

A

The ability to show many shades of gray

44
Q

The unexposed and undeveloped silver bromide crystals are removed in the?

A

Fixer

45
Q

What gets replenished?

A

Both the developer and the fixer

46
Q

Which major system of the processor is responsible for mixing chemicals with the processor?

A

Recirculating system

47
Q

Not turning on the water to the processor will cause?

A

Greasy films, because the chemicals would not be washed from the film.

48
Q

Which major system for the processor is responsible for maintaining chemical strength in the processor?

A

Replenishing system; it pumps in fresh chemistry each time a film is processed.

49
Q

how often should the crossover racks be cleaned?

A

Daily

50
Q

Which major system of the processor will filter out reaction particles from the developer?

A

Recirculating system; has filters placed “inline” that filter out impurities from the developer.

51
Q

Which system draws chemicals from the bottom of the developer and fixer tanks of the processor and returns these chemicals through the side of the tanks?

A

Recirculating system; this helps to remove reaction particles and byproducts of processing that may settle to the bottom of the tanks.

52
Q

Guideshoes out of alignment would cause what problems?

A

Jamming of the processor and Scratches on the flim.

53
Q

Which method of silver recovery requires a rectifier?

A

Electrolytic method; uses a DC current passed between diodes and uses a rectifier to convert AC from the power outlet to DC needed fro the process.

54
Q

Scratched film during processing is most likely caused by which major system of the processor?

A

Transport system; it moves the film through the processor and any misalignment or buildup on the system can scratch the film.

55
Q

What should be checked during preventative maintenance?

A

All moving parts,
All hoses, and
All filters.
Checked with each PM performed.

56
Q

Which method of silver recovery relies on a base metal filter reacting with the acid of the fixer?

A

Metallic cartridge method; acts to give up electrons as it reacts with the acid of the fixer.

57
Q

Which major system of the processor is responsible for removing reaction particles from the film during processing?

A

Transport system; the movement and action of the rollers of the transport system act to “shake off” reaction particles from the film.

58
Q

What if lacking if films exit the processor with a milky appearance?

A

The Fixer; due to an inadequate fixer.

59
Q

Which component of the transport system directs the film from one tank to the next?

A

Crossover assembly; they are shaped and positioned to guide the film from one tank to the next.

60
Q

What determines the amount of chemicals pumped into the processor tanks?

A

Inches of film (per inch of film); as the film passes through the entrance rollers the replenishing system is activated, so the longer the film, the longer it stays on. The delivery rate is determined to deliver a preselected amount of chemicals per inch of film.

Exposures and Quality Control (3 decks)

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