Film-Tech Forum ARCHIVE: Print Registration

This is topic Print Registration in forum Film Handlers' Forum at Film-Tech Forum ARCHIVE.

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Posted by James R. Hammonds, Jr (Member # 673) on 01-19-2002, 10:11 PM:

What exactly is meant by this?

In all the threads Ive seen, Ive only seen references to it and have only gotten a vague ides of what it means.
What Ive gotten is that it has to do with the quality of the image steadiness and focus.
is there more to it than that?

What are some of the causes of poor registration as far as the labs are concerned?

Posted by Aaron Sisemore (Member # 145) on 01-19-2002, 11:07 PM:

In Eastman prints 'registration' refers to the precision control of the printing element to the raw print stock as it goes through the optical printing stage(s). If it strays from perfectly locked, the finished print will weave, yaw and jitter when projected, depending on the severity of the misregistration.

In dye-transfer printing it refers to the precision control and/or matching of the three printing matrices in relation to the receiver stock. If the registration is off on one or more of the printing matrices, the image 'color fringes' or spearates into the three dye colors on the edges of objects in the image.

-Aaron

Posted by John Pytlak (Member # 331) on 01-21-2002, 07:17 AM:

Here is a link to information regarding printing and printing systems:
http://www.kodak.com/US/en/motion/support/h1/printing.shtml
http://www.kodak.com/US/en/motion/support/h1/sizesP.shtml#winding

Note that when using a continuous contact printer, optimum steadiness occurs when a short pitch (BH-1866 perforations) negative is printed onto a long pitch (KS-1870 perforations) raw stock. Printing short pitch originals to short pitch raw stock can result in slippage, causing unsteadiness and loss of sharpness. Pin-registered printers (step contact or optical) should be used for the intermediate stages, but short production schedules may not allow labs to use these slower pin-registered printers to make the intermediates.

------------------
John P. Pytlak, Senior Technical Specialist
Worldwide Technical Services, Entertainment Imaging
Research Labs, Building 69, Room 7525A
Rochester, New York, 14650-1922 USA
Tel: 716-477-5325 Cell: 716-781-4036 Fax: 716-722-7243
E-Mail: john.pytlak@kodak.com
Web site: http://www.kodak.com/go/motion