Back to results
US 4,056,824 AGranted
Developing apparatus for diazo copying machine
AssigneeRicoh Company, Ltd.
InventorsKiyotaka Iiyama, Takeshi Matsui, Shigeru Kusakata, Michihisa Takahashi
Life of this patent
Estimating the term…
Abstract
A developing chamber and inlet and outlet chambers leading to and from the developing chamber respectively are uniformly heated in such a manner that ammonia gas used as a developing agent and water vapor are prevented from being condensed and contaminating copy sheets.
Claims15
In a diazo copying machine, a developing apparatus comprising:
- a housing formed with an inlet opening and an outlet opening;
- a pair of inner inlet feed rollers and a pair of inner outlet feed rollers operatively disposed in the housing in substantially sealing cooperation to define therebetween a developing chamber within the housing;
- a pair of outer inlet feed rollers provided within the housing adjacent to the inlet opening in substantially sealing cooperation to define with the inner inlet feed rollers an inlet chamber therebetween;
- a pair of outer outlet feed rollers provided within the housing adjacent to the outlet opening in substantially sealing cooperation to define with the inner outlet feed rollers an outlet chamber therebetween;
- means for introducing a vaporized developing fluid into the developing chamber;
- and
- heating means provided in the housing to maintain the developing chamber and inlet and outlet chamber at temperature high enough to prevent condensation of the developing fluid and water vapor therein.
4 more elements
Dependencies are inferred from the claim text.