Fuji Photo Film Company, Limited

Hiromi Yazawa

Hideaki Kimura

Keisuke Shiba

Sho Nakao

Tsutomu Yamazaki

Chikashi Ohishi

Naoki Sakai

Masahiro Inoda

Haruo Aoki

Hisashi Katou

Akio Matsunami

An image signal representing image information containing a periodic pattern is processed before it is broken up into halftone dots. First, the image information is averaged to generate an unsharpness signal, and then the unsharpness signal is processed for edge sharpness to generate a sharpness signal. Thereafter, a halftone-dot image is generated from the sharpness signal. More specifically, the sharpness signal Sij* is generated from a first unsharpness signal Uij which is produced by averaging the image information and a second unsharpness signal Uij which is produced by averaging the first unsharpness signal Uij, according to the equation:

Method of and apparatus for smoothing an image having a periodic pattern

An image scanning reading and recording apparatus delivers an original bearing an image to a reading position, scans the original with a first light beam to read the image to produce image information, processes the image information according to prescribed image recording conditions to produce an image signal, modulates a second light beam with the image signal to produce a halftone dot signal, and applies the halftone dot signal to a photo-sensitive medium to record the image thereon. An original feeding mechanism is coupled to the image scanning reading and recording apparatus. The image scanning reading and recording apparatus includes a control unit connectable to an additional memory for storing image recording conditions for originals stored in the original feeding mechanism. The orginal feeding mechanism successively feeds the originals to the image scanning reading and recording apparatus, and identifies the originals as they are fed. The contol unit selects those of the image recording conditions stored in the additional memory which correspond to the orginal identified by the identifying means and records the image on the photosensitive medium according to the selected image recording conditions.

Image scanning reading and recording system

A process for producing a printing plate and a printing plate making machine are disclosed. The process involves providing an electrophotographic plate making material which includes a base having a low conductive layer thereon. The material is electrically charged and imagewise exposed. The imagewise exposed material is subjected to liquid toner development with a toner containing a solvent. The solvent is then substantially removed by heating the material to a temperature sufficient to cause the evaporation of the solvent. The material is then moved to a substantially isolated fixing area and again heated in order to fix a toner image on the plate making material. The process can be quickly and easily carried out and eliminates the danger of the explosion of solvent vapors.

Electrophotographic process for producing printing plate and plate

A marking method and marking device for providing an image upon a steel material or other hardened surface. A toner image is formed on the surface of the marking drum having an elastic surface. The drum is placed in abutment with the material to be marked under pressure while at least one of the drum material to be marked is moved along the surface of the other to thereby transfer the toner image onto the surface to be marked. Toner fixing liquid is subsequently dispensed over the transferred image. Apparatus for driving and supporting the marking drum is disclosed including a swinging support arm which may be extendible in some embodiments so as to make the device capable of marking many types of surfaces.

Marking method and device

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Kanagawa, Japan

Hiromi Yazawa