Camera and photosensitive material feed unit useful therefor

Claim 2

A camera of claim 1, further comprising: supplementary exposure means including a plurality of light emitting elements which are arranged in a line along a direction substantially perpendicular to the photosensitive material feeding direction; and second computation means for obtaining a value of the number of said light emitting elements to be turned on, based on the reproduction magnification, wherein portions of said light emitting elements, according to the value, are turned on from both ends of said supplementary exposure means to thereby expose a non-scanning region, said non-scanning region being not exposed by said image light.

Claim 3

A camera of claim 2, wherein said supplementary exposure means further includes a flare prevention means having a plurality of holes each of which corresponds to a bottom of said light emitting element, whereby light from each of said light emitting element is directed through each of said holes toward said photosensitive material sheet.

Claim 4

A camera of claim 3, wherein each hole is formed into a rectangular.

Claim 5

A camera of claim 1, wherein said original feed means comprises: a platen made of a transparent material; and a cover sheet, disposed above said platen, for holding said original provided on said platen in cooperation with said platen, said cover sheet being a transparent or a semi-transparent sheet.

Claim 6

A camera of claim 5, wherein said cover sheet has a center line extending along the original feeding direction, a reference line extending along a direction perpendicular to the original feeding direction and a plurality of distance lines parallel to said center line.

Claim 7

A camera of claim 6, wherein said distance lines are arranged at regular intervals.

Claim 8

A camera of claim 6, wherein said inputing means also includes means for inputting a width of said photosensitive material sheet and for inputting a width of a holding space, said holding space being on a top or a bottom portion of said photosensitive material sheet.

Claim 9

A camera of claim 8, further comprising: third computation means for calculating positioning data of said original with respect to a direction perpendicular to the original feeding direction, based on the width of said photosensitive material sheet, the width of said holding space and the reproduction magnification; and displaying means for displaying the positioning data, wherein said original is located so that edge thereof coincides with said reference line, and is further arranged according to the positioning data displayed on said displaying means.

Claim 10

A camera of claim 6, wherein said inputing means also includes means for inputting a width of a holding space, said holding space being on a side portion of said photosensitive material sheet.

Claim 11

A camera of claim 10, further comprising: fourth computation means for calculating a length of said photosensitive material to be fed prior to the reproduction of said image, based on the width of said holding space, wherein said scanning control means further includes means for controlling the feed of said photosensitive material sheet by the length prior to the reproduction of said image.

Claim 12

A camera of claim 1, wherein said photosensitive material feed means includes: a motor rotatable in two opposite directions; a first and a second roller set for feeding said photosensitive material sheet, said first and said second roller set being placed in that order along the photosensitive material feeding direction; and power transmit means for transmitting drive force from said motor to either of said first and said second roller set.

Claim 13

A camera of claim 12, wherein said power transmit means includes an oneway clatch which transmits drive force of said motor in the photosensitive material feeding direction, said oneway clatch being axially mounted to either of the rollers of said second roller set.

Claim 14

A camera of claim 13, wherein feeding speed of said second roller set is greater than feeding speed of said first roller set when said photosensitive material sheet is fed in the photosensitive material feeding direction.

Claim 15

A camera for reproducing an image onto a photosensitive material sheet to thereby produce a side-mounted type printing plate, said side-mounted type printing plate having a holding space on a top or a bottom portion of said photosensitive material sheet, said camera comprising: original feed means for feeding an original in an original feeding direction; photosensitive material feed means for feeding a photosensitive material sheet in a photosensitive material feeding direction; inputing means for inputting a width of said photosensitive material sheet, a width of a holding space and a reproduction magnification of an image to be reproduced; a projection optical system for projecting image light reflected from said original in the form of a slit onto said photosensitive material sheet; computation means for calculating positioning data of said original with respect to a direction perpendicular to the original feeding direction, based on the width of said photosensitive material sheet, the width of said holding space and the reproduction magnification; and displaying means for displaying the positioning data.

Claim 16

A camera of claim 15, wherein said original feed means comprises: a platen made of a transparent material; and a positioning sheet disposed above said platen, said positioning sheet being a transparent or a semi-transparent sheet.

Claim 17

A camera of claim 16, wherein said positioning sheet has a plurality of positioning lines parallel to the original feeding direction and a reference line substantially perpendicular to said positioning lines, and wherein said original is located so that edge thereof coincides with said reference line, and is further arranged according to the positioning data displayed on said displaying means, to thereby be positioned.

Claim 18

A camera for reproducing an image onto a photosensitive material sheet to thereby produce a top-or-bottom-mounted type printing plate, said top-or-bottom-mounted type printing plate having a holding space on a leading edge portion of said photosensitive material sheet with respect to a photosensitive material feeding direction, said camera comprising: original feed means for feeding an original in an original feeding direction; photosensitive material feed means for feeding a photosensitive material sheet in the photosensitive material feeding direction; inputing means for inputting a width of a holding space; a projection optical system for projecting image light reflected from said original in the form of a slit onto said photosensitive material sheet; computation means for calculating a length of said photosensitive material to be fed prior to reproduction of an image, based on the width of said holding space; and scanning control means for controlling the feed of said photosensitive material sheet and of said original, wherein said photosensitive material is fed by the length prior to the reproduction of said image, and thereafter said original and said photosensitive material sheet are synchronously fed each other while said slit image light being projected onto said photosensitive material sheet.

Claim 19

A camera of claim 18, wherein said positioning sheet has a center line extending along the original feeding direction, a reference line extending along a direction perpendicular to the original feeding direction and a plurality of distance lines parallel to said center line.

Claim 20

A photosensitive material feed unit for feeding a photosensitive material in a photosensitive material feeding direction, comprising: a motor rotatable in two opposite directions; a first and a second roller set for feeding said photosensitive material sheet, said first and said second roller set being placed in that order along the photosensitive material feeding direction; and power transmit means for transmitting drive force from said motor to either of said first and said second roller set.

Claim 21

A photosensitive material feed unit of claim 20, wherein said power transmit means includes an oneway clatch which transmits drive force of said motor in the photosensitive material feeding direction, said oneway clatch being axially mounted to either of the rollers of said second roller set.

Claim 22

A photosensitive material feed unit of claim 21, wherein feeding speed of said second roller set is greater than feeding speed of said first roller set when said photosensitive material sheet is fed in the photosensitive material feeding direction.

Claim 24

A method of claim 23, further comprising: obtaining a value of the number of light emitting elements to be turned on, based on the reproduction magnification; and turning portions of said light emitting elements on, according to the value, so that non-scanning region which is not exposed by said slit image light is exposed.

Claim 25

A method of claim 23, wherein said step of setting an original includes: inputting a width of said photosensitive material sheet and a width of a holding space, said holding space being on a top or a bottom portion of said photosensitive material sheet; calculating positioning data of said original with respect to a direction perpendicular to the original feeding direction, based on the width of said photosensitive material sheet, the width of said holding space and the reproduction magnification; displaying the positioning data; and locating said original according to the positioning data.

Claim 26

A method of claim 23, further comprising: inputting a width of a holding space, said holding space being on a side portion of said photosensitive material sheet; calculating a length of said photosensitive material to be fed prior to the reproduction of said image, based on the width of said holding space; and feeding said photosensitive material sheet by the length prior to the reproduction of said image.