Presentation is loading. Please wait.

Presentation is loading. Please wait.

PROCESSOR CHEMISTRY. PROCESSOR COMPARTMENTS DEVELOPMENT FIXING WASHING DRYING.

Similar presentations


Presentation on theme: "PROCESSOR CHEMISTRY. PROCESSOR COMPARTMENTS DEVELOPMENT FIXING WASHING DRYING."— Presentation transcript:

1 PROCESSOR CHEMISTRY

2 PROCESSOR COMPARTMENTS DEVELOPMENT FIXING WASHING DRYING

3 AUTOMATIC PROCESSOR

4 AUTOMATIC PROCESSOR DAYLIGHT SYSTEM

5 FEEDING FILM INTO THE PROCESSOR PROCESSOR FEED TRAY

6 FUNCTIONS OF H 2 O IN PROCESSOR WETTING AGENT--DEVELOPER WETTING AGENT--DEVELOPER SOLVENTFIXER & DEVELOPER SOLVENTFIXER & DEVELOPER

7 SOLVENT MEDIUM IN WHICH OTHER CHEMICALS ARE DISSOLVED OR SUSPENDED.

8 WETTING AGENT AGENT CAUSING THE GELATIN OF THE FILM EMULSION TO SWELL AND ALLOWS REACTION OF THE DEVELOPER CHEMICALS WITH THE FILM EMULSION COMPONENTS. AGENT CAUSING THE GELATIN OF THE FILM EMULSION TO SWELL AND ALLOWS REACTION OF THE DEVELOPER CHEMICALS WITH THE FILM EMULSION COMPONENTS.

9 FUNCTION OF DEVELOPER CONVERSION OF THE IONIC CHAINS OF SILVER INTO BLACK METALLIC SILVER Ag eAg 0

10 DEVELOPER: LATENT IMAGEMANIFEST IMAGE

11 DEVELOPER

12 DEVELOPER COMPONENTS REDUCING AGENT I REDUCING AGENT I REDUCING AGENT II REDUCING AGENT II BUFFERING AGENT BUFFERING AGENT RESTRAINER RESTRAINER PRESERVATIVE PRESERVATIVE HARDENER HARDENER SOLVENT SOLVENT PHENIDONE PHENIDONE HYDROQUINONE HYDROQUINONE SODIUM CARBONATE SODIUM CARBONATE POTASSIUM BROMIDE POTASSIUM BROMIDE SODIUM SULFITE SODIUM SULFITE GLUTERALDEHYDE GLUTERALDEHYDE WATER WATER

13 REDUCING AGENTS SUPPLY ELECTRONS FOR REDUCTION OF IONIC SILVER INTO METALLIC FORM. PHENIDONE –ACTS QUICKLY, PRODUCES GRAY TONES IN THE IMAGE. HYDROQUINONE – ACTS SLOWLY, PRODUCES BLACK TONES IN THE IMAGE

14 HYDROQUINONE + PHENIDONE SYNERGISTIC REACTION ( WORK TOGETHER TO PRODUCE THE MANIFEST IMAGE.

15 REDUCTION ACTION --

16 REDUCING ACTION HYDROQUINONE PHENIDONE

17 BUFFERING AGENT PRODUCES ALKALINE ( BASIC) pH + SWELLS EMULSION PH ACIDICALKALINE

18 DEVELOPER pH ALKALINE !!!!

19 RESTRAINER ANTIFOGGING AGENT + MAINTAINS PROPER ACTIVITY OF THE REDUCING AGENTS

20 PRESERVATIVE CONTROLS OXIDATION SUL-FITE --- FIGHTS OXIDATION. Maintains balance of developer components.

21 HARDENER REDUCES EMULSION SWELLING+ HARDENS EMULSION+ PROVIDES ARCHIVAL QUALITY

22 SOLVENT DISSOLVES CHEMICALS

23 WETTING AGENT ALLOWS PENETRATION OF THE FILM EMULSION BY DEVELOPER CHEMICALS

24 WETTING AGENT WATER

25 FIXER CHEMICALS FIXING AGENT FIXING AGENT ACTIVATOR ACTIVATOR HARDENER HARDENER PRESERVATIVE PRESERVATIVE BUFFER BUFFER SOLVENT SOLVENT AMMONIUM THIOSULFATE AMMONIUM THIOSULFATE ACETIC ACID ACETIC ACID POTASSIUM ALUM POTASSIUM ALUM SODIUM SULFITE SODIUM SULFITE ACETATE ACETATE WATER WATER

26 FIXING AGENT ( CLEARING) REMOVES UNDEVELOPED AgBr FROM EMULSION.

27 HYPORETENTION RETENTION OF THE FIXING AGENT IN THE EMULSION. IT PRODUCES BROWN DISCOLORATION ON THE FILM. IT CAUSES POOR ARCHIVAL QUALITY OF THE FILM. RETENTION OF THE FIXING AGENT IN THE EMULSION. IT PRODUCES BROWN DISCOLORATION ON THE FILM. IT CAUSES POOR ARCHIVAL QUALITY OF THE FILM.

28 HYPORETENTION

29 ACTIVATOR STOPS THE DEVELOPMENT PROCESS BY PRODUCING ACIDIC Ph. IT NEUTRALIZES RESIDUAL DEVELOPER.

30 ACTIVATOR DEVELOPERFIXER

31 FIXER pH ACIDIC

32 HARDENER HARDENS EMULSION FOR EASY TRANSPORT OF THE FILM THROUGH THE PROCESSOR. ENSURES RAPID DRYING.

33 INADEQUATE HARDENING

34 PRESERVATIVE CHEMICAL BALANCE

35 BUFFER MAINTAINS ACIDIC pH

36 DEVELOPER vs FIXER pH? DEVELOPERFIXER

37 SOLVENT WATER

38

39 WASHING H20H20

40 DRYING


Download ppt "PROCESSOR CHEMISTRY. PROCESSOR COMPARTMENTS DEVELOPMENT FIXING WASHING DRYING."

Similar presentations


Ads by Google