Photosensitive material package unit provided with exposure function

Claim 2

A photosensitive material package unit provided with an exposure function, said package unit having been preloaded with a photosensitive material, which material comprises a support for a photographic layer on one side of said support and a back layer on an opposite side of the support, said photographic layer having at least one silver halide emulsion layer, said package unit comprising: (1) a package unit main body base having (a) a first holding chamber for holding an unexposed photosensitive material with the unexposed photosensitive material rolled directly therein or with the unexposed photosensitive material rolled and contained in a container and (b) a second holding chamber for holding an exposed photosensitive material with the exposed photosensitive material rolled directly therein or with the exposed photosensitive material rolled and contained in a container, and (2) a coefficient of friction between the photographic layer and the back layer of the photosensitive material being 0.35 or less.

Claim 3

A photosensitive material package unit as claimed in claim 1, wherein the coefficient of friction of the back layer of the photosensitive material against a steel ball is 0.35 or less.

Claim 4

A photosensitive material package unit as claimed in claim 1, wherein the coefficient of friction of the photographic layer of the photosensitive material against a steel ball is 0.35 or less.

Claim 5

A photosensitive material package unit as claimed in claim 1, wherein the second holding chamber is a support section for holding a container, and the first holding chamber directly holds a photosensitive material drawn out from said container.

Claim 6

A photosensitive material package as claimed in claim 1, wherein said coefficient of friction is between 0.10 and 0.30.

Claim 7

A photosensitive material package as claimed in claim 1, wherein at least one of the compounds represented by formulae (I), (II), (III), (IV) and (VI) is present on at least one surface of the photosensitive material, wherein formula (I) has the general structure: ##STR10## wherein R, which may be the same or different, represents a member selected from the group consisting of an alkyl group having 5 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, an alkoxyalkyl group having 5 to 20 carbon atoms, an arylalkyl group having 5 to 20 carbon atoms, an aryloxyalkyl group having 5 to 20 carbon atoms, and a 2,3-epoxypropyloxyalkyl group having 5 to 20 carbon atoms. R 1 , which may be the same or different, is selected from the group consisting of an alkyl group having 1 to 20 carbon atoms, a cycloalkyl group having 5 to 20 carbon atoms, an alkoxyalkyl group having 5 to 20 carbon atoms, an arylalkyl group having 5 to 20 carbon atoms, an aryloxyalkyl group having 5 to 20 carbon atoms, and a 2.3-epoxypropyloxyalkyl group having 5 to 20 carbon atoms, and n is an integer of 0 to 2000; formula (II) has the general structure: ##STR11## wherein R'is selected from the group consisting of an aliphatic group having 1 to 20 carbon atoms and an aryl group having 6 to 20 carbon atoms, R" is selected from the group consisting of a hydrogen atom, an aliphatic group having 1 to 20 carbon atoms, and an aryl group having 6 to 20 carbon atoms, R'" is selected from the group consisting of an alkyl group having 1 to 20 carbon atoms and an alkoxyalkyl group having 1 to 20 carbon atoms, A represents a divalent aliphatic hydrocarbon residue having 1 to 20 carbon atoms, n is 0 or an integer of 1 and 12, p is an integer of 0 to 5, q is an integer of 2 to 50, x is an integer of 0 to 100, y is an integer of 1 to 50, and z is an integer of 0 to 100, provided that x+y+z is an integer of 5 to 250; Formula (III) has the general structure: ##STR12## wherein R' 1 represents a hydrocarbon group having at least one double bond and containing 18 to 23 carbon atoms, and R 2 and R 3 each is selected from the group consisting of a hydrogen atom and a lower alkyl group having 1 to 4 carbon atoms, wherein the hydrocarbon group represented by R' 1 may be straight or branched; Formula (IV) has the general structure: ##STR13## wherein R" 1 , R' 2 and R' 3 , which may be the same or different, each represents an alkyl group having 10 to 20 carbon atoms; Formula (V) has the general structure: R.sub.4 COOR.sub.5 wherein R 4 and R 5 , which may be the same or different, each represents an alkyl group having 10 to 20 carbon atoms; Formula (VI) has the general structure: ##STR14## wherein R 6 , R 7 , R 8 and R 9 each is selected from the group consisting of a hydrogen atom and an aliphatic carboxylic acid residue having 12 to 24 carbon atoms, and at least three of R 6 , R 7 , R 8 and R 9 represent aliphatic carboxylic acid residues having 12 to 24 carbon atoms.