Diazo printer with improved ammonia supply system

摘要: The speed of a diazo printer is sensed and the rate ammonia delivery to developer chamber automatically boosted at higher speeds. Preferably, sensor positioned adjacent rotary paper-drive member produces electrical pulses proportioned with which copy paper passes through chamber, an electronic circuit board contains circuitry senses when recurrence these rises into predetermined range; this occurs, causes solenoid valve deliver boost directly perforated tube located within normal supply takes place lower