Apparatus for the control of photosensitive material handling an

Details Apparatus for the control of photosensitive material handling an Apparatus for the control of photosensitive material handling an

1974-10-31

1977-02-01

Schaefer, Robert K.

Electricity: motive power systems

Positional servo systems

With particular motor control system responsive to the...

318 39, 318625, 318640, 365 64, G05B 1940, G03B 2732

Patent

active

040063950

ABSTRACT:
Apparatus is disclosed for transporting and cutting film in a computer output microfilmer which includes mechanisms for transporting and cutting the film respectively, and circuitry responsive to successive sequences of pulses for controlling such mechanisms. The transport mechanism includes a pair of stepping motors having phase windings responsive to current pulses which drive the film in mutually perpendicular directions respectively. Motor control circuits responsive to the pulses are operative to switch current through these phase windings so that successive columns, each containing a plurality of frames in which images may be recorded, are disposed successively at a film gate. The shaft of the motor which transports the film in the columnar direction has an optical sensor which produces output signals corresponding to the location of the film at a reference position. These output signals are applied to the source which provides the control pulses and may be used to provide synchronism between the control pulses and the position of the film. The cutter is triggered to operate by control pulses which cause a capacitor to be discharged through a cutter operating solenoid. A timing circuit responsive to the voltage across the capacitor inhibits the recharging of the capacitor to avoid unwanted cutter energization. The transport mechanism then moves the exposed and cut film to a processor.

REFERENCES:
patent: 3244863 (1966-04-01), Paterson
patent: 3572925 (1971-03-01), Abces et al.
patent: 3586953 (1971-06-01), Markkanen et al.
patent: 3931639 (1976-01-01), Arter et al.

Affiliated with

Also associated with

Rating

Apparatus for the control of photosensitive material handling an does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Apparatus for the control of photosensitive material handling an, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus for the control of photosensitive material handling an will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1093284