Typewriter or similar machine having a colour ribbon lifting and lowering device
DE2756611A1
Evaluation circuit for photoelectrically read traces - has variable gain amplifier and trigger circuits reducing signal variation with paper speed and contrast
DE2756518A1
Recording medium transport system - uses variable position pressure regulating clamp rollers to retain moving record
DE2756662A1
Photoelectric scanning of recording traces - uses incident and return fibre optic paths to reduce heat transfer from light source
DE2753606A1
Digital system for teaching machine classifications - has sets of logic units including flip=flops, multipliers, NAND=gates and AND=gates to form products of input valves and weighting factors
DE2747787A1
Multiple power supply checking unit - has logic circuit for indication and sequence control and uses comparator outputs as routing switch control
DE2740167A1
Wrap spring coupling for driving universal type head - has rolling gearing to assist in taking up drive
DE2732362A1
Exchangeable ink ribbon cassette for typewriter - has exchangeable parts to enable different types of ribbon to be incorporated
DE2723054A1
Recording process write pulse generation - uses master slave coupled flipflops with comparator output stage to convert phase encoded binary information
DE2721137A1
Intermediate spacing unit for typewriter carriage - has one pawl for intermediate spacing, one for normal spacing and carriage position indicator
DE2721152A1
Voltage monitor which applies clock pulses - is coupled to reference voltage at operational amplifier input to detect tolerance deviations
DE2713237A1
Contactless pulse generating keyboard - with radiation source facing detector in casing with key shank interrupting radiation path
DE2709261A1
Stretching device for flexible magnetic record disc - has central spring load over inverted cup member with three outwardly extending resilient arms
DE2705127A1
CASSETTE SYSTEM, IN PARTICULAR FOR COLOR, CARBON AND CORRECTIVE TAPES
DE2703839A1
Coloured material, esp. typewriter ribbon or carbon paper - with porous polymer top layer contg. absorbent inorganic filler, dyed after application and hardening
DE2701174A1
Power driven typewriter with universal head - has shift and shift return keys acting on single intermediate lever connected to coding bars
DE2701185A1
Quiet typing function control - has impact force and non-printing function controlled by locking shaft with 2 impression grades
DE2655134A1
Programmable control for hand winding tools - has PROM containing complete winding data and operational sequence control for indicating locating and prodn. processes
GB1539976A
Ink ribbon feed device
DE2652049A1
CIRCUIT ARRANGEMENT FOR BIT CLOCK DETERMINATION WHEN STORED ON MOVING MAGNETIC STORAGE MEDIA
