A - 2
Glossary of Terms to Describe the Joshua Camera
Note: Includes Polaroid meanings of terms used to describe
Camera operations, parts and assemblies. Camera part
names are capitalized.
Actuator, Power Part of Power (Erect) Switch which maintains power for darkslide or
processing when camera is folded.
Ambient Visible light illuminating subject.
Asleep and Wake Low (idle) power and full operating power levels of camera electronics.
Up Modes
B+ Operating voltage (nominally tbd V) for camera electrical and electronic
circuits.
Blade Position Encoder Sophisticated electro-optical system using photo-interrupter in Shutter
Blades to accurately determine Blade position.
Brightness Override Electronic Lighten/Darken switch to adjust exposure by about +/- 3/4 f/stop.
Moving a slider operates Logic Switch wireforms.
Camera Cycle All steps occurring in exposure and processing, from darkslide to film frame
transport into storage chamber.
Chute Semi-circular cavity at end of Camera into which film frame is transported
by Feed Rolls, which reverses the direction of frame travel to permit frame
storage.
Closed Refers to Camera doors, not the Camera itself.
Clutch, Wrap-Spring One-way clutch in drive system Clutch Gear that unlatch Recock Latch in
CCW direction, but slips in CW direction.
Collapsed Refers to Camera in folded position (opposite of erect).
Counter Detent Metal arm in Drive System which acts as a ratchet on Counter Wheel, after
Wheel is indexed by forward stroke of spring arm on Pick Carrier.
Counter Wheel Indicating disk numbered 1 - 10, which displays number of frames used.
Darkslide The paper covering the top frame in a film pack, automatically removed and
stored in the picture storage chamber when the filmpack is inserted; also, the
process just described.
To Next Page
Loading...
Need help?
General
