DEVICE FOR MEASURING CONCENTRATION OF DEVELOPING SOLUTION OF WET TYPE PRINTER

摘要

PURPOSE: A device for measuring a concentration of a developing solution of a wet type printer is provided to omit an error correction element for amending an error of a concentration measuring value with relation to pollution of a developing solution, thereby simplifying the structure of the device. CONSTITUTION: A device for measuring a concentration of a developing solution of a wet type printer includes a housing(50), an oil film forming element mounted in the housing for forming an oil film of a developing solution, and a sensing element having a light source unit(81) and an optical detector(83) mounted correspondingly to the light source unit for receiving light beams passing through the oil film of the developing solution, wherein the light source unit radiates color light beams of a wavelength area having a relatively higher light permeation ratio to a selected color developing solution.