Cutting – Operation controlled by detector means responsive to work – Positioning of tool controlled
Reexamination Certificate
1999-02-11
2001-03-20
Peterson, Kenneth E. (Department: 3724)
Cutting
Operation controlled by detector means responsive to work
Positioning of tool controlled
C083S455000, C083S614000
Reexamination Certificate
active
06202527
ABSTRACT:
FIELD OF THE INVENTION
The invention relates to a cutting arrangement for a material web. In particular, the invention relates to a cutting arrangement for photographic copy material in a photographic copier apparatus.
BACKGROUND OF THE INVENTION
In photographic copiers, especially so-called mini labs, cutting arrangements including a knife roller and a drive for reciprocating the knife roller transverse to the material web are often used especially for larger paper widths, since they have various advantages compared to other cutting arrangements. However, if copy paper webs of different widths are processed in the copier apparatus, the cutting time for more narrow paper webs is the same as for the widest paper web for which the cutting arrangement or the copier apparatus is constructed. This is perceived disadvantageous in time sensitive applications.
SUMMARY OF THE INVENTION
A cutting arrangement of the art is now to be improved with the present invention such that it provides shorter cutting times for more narrow material webs than for wider material webs.
The solution of the problem underlying the invention results from the features of the cutting arrangement in accordance with the invention whereby at least two starting positions are provided for each of the two cutting directions and coordinated with different widths of the material web and the cutting movement of the knife roller is started respectively, the starting position associated with the respective material web width and for one cutting direction.
Further, advantageous and especially practical embodiments of the cutting arrangement in accordance with the invention are described below.
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Burns Doane Swecker & Mathis L.L.P.
Choi Stephen
Gretag Imaging AG
Peterson Kenneth E.
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