Image Retrieval: add the ability to save Screen Image Capture (PNG) collections as TIFF files.

[DT23839]

Today Image Retrieval throws an error retrieving sources created with 'screen image capture (PNG format).' Sources must be all PDF or all TIFF. Business users regularly create sources in the PNG format. IR should convert the PNG files to TIFF or combine the PNG documents into a single file. 

[Karen_Hunter]

Please email me with additional information.  Is this a problem with any png uploaded or specifically sources created using the Screen Capture resource?  Note that the IR 3.0 documentation includes an optional Accept query parameters which looks like it support .png files.  If the accept parameter is not included, an attachment link for each item will be returned along with a type attribute with the current image format.
The following is a list of valid MIME types for the accept query parameter:
• image/jpeg
• image/png
• image/gif
• image/tiff