Abstract: A photographic film printer including a housing, a lamphouse, negative handling portions, filters, paper handling portions and a reflex viewing mirror which permits viewing of the negatives while they are positioned at the printing station. In addition, the printer provides a linkage which permits a negative pressure plate to provide firm engagement and retention of a negative strip. A splicing station for joining successive negative strips is provided. Paper handling and cutting features are also provided. Shutter operating elements are included. Systems for resisting undesired entry of light into the printer interior are provided. Remote, manual advance of the negative strip is provided.

Abstract: A new colorimeter blood analyzer having a capacity of simultaneously performing a specific blood test and reading the prothrombin time on a separate digital readout device. The program circuit module with appropriate calibration parameters which is self-referencing performs specific tests providing direct display of the desired blood constituent concentration. The analyzer provides an independent prothrombin well having a separate optical source for prothrombin time measurement providing direct display on an independent readout display. The analyzer also has a built-in digital readout quartz crystal timing device which can be operated when prothrombin time analysis is not conducted. The entire analyzer is contained in a compact console which includes controlled incubated storage for blood test samples together with insertion cavities for both constituent concentration and prothrombin time analysis.