Dainippon Screen Mfg. Co., Ltd.

Dainippon Screen Seizo Kabushiki-kaisha

Akira Ishida

Akira Yumen

Naotada Saito

Mikizo Katsuyama

Makoto Kitai

A drum scanning type image scanning apparatus comprises a disk form scanning drum holding means (30A) provided with a plurality of scanning drums (3) on the same circumference, a main scanning direction rotation means (10) for rotating scanning drums in the main scanning direction, a set of reading means (20, 26) for reading originals on the scanning drums, scanning drum selecting means (40) for successively exchanging the plurality of scanning drums held on the same circumference by rotating the disk form scanning drum holding means around the center of the disk, setup data holding means (100) for holding setup data of the originals arranged on the plurality of scanning drums, and control means (5, 100) for controlling the scanning drum holding means and original reading means such that the scanning drum holding means is rotated based on the setup data so that the desired scanning drum is selected and the desired original is read.

Image scanning apparatus including means for selecting one of a

A color-separation film is produced for one or more original pictures which require trimming by carrying out a separation process by means of a color scanner. The original pictures are adhered to a light-shielding sheet. The light-shielding sheet is provided with trimming windows through which all or portions of the original pictures are viewable. The shielding sheet and the original pictures viewable therethrough are scanned to obtain color-separated images which images are then recorded on a photosensitive sheet which is mounted on a recording cylinder. Further, a binary-coded signal is developed which indicates the regions on the light-shielding sheet which lie outside the trimming windows. The binary-coded picture signal is used for forming a mask region on the photosensitive sheet. Accordingly, a subsequent contact-printing procedure is simplified and the printing process can be carried out more reliably and accurately.

Method and apparatus for producing a color-separation film by recording

Each of original pictures is pasted up to a mask sheet in which respective trimming areas corresponding to each of said original pictures is transparent and other areas thereof are made of a material having high reflective coefficient, according to a desired layout, and the mask sheet is set up on the scanning drum of the colors scanner to carry out photoelectric scanning, and then a picked up signal basing on difference in scanning light beam reflection level between the trimmed areas of the original pictures and the areas having high reflective coefficient, is appropriately switched to exposingly record the desired color separation picture image and/or a mask pattern.

Method and apparatus for reproducing color separation picture image

In the film cutter of this invention, a cutter carriage is guided by a guide rod of a circular cross section allowing it to make both a translational motion along the guide rod and a tilting motion about the guide rod, whereby a rotary blade mounted on the cutter carriage is assured of a close contact with a fixed linear blade irrespective of the thickness of the film to be cut for always attaining a satisfactory cutting action. And a film holder working in synchronism with the cutter carriage allows a roll of film to be cut into specified lengths in a sequential manner.

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Kyoto, Japan

Akira Ishida