Noritsu Koki Co., Ltd.

Nk Works Co., Ltd.

Toshiro Akira

Hiroshi Miyawaki

Mitsuhiko Itojima

Masaaki Tsuji

Ryuichi Iwasaki

Takayuki Oka

Hisahiro Maeda

Hiroto Nakao

Kazuyoshi Yamamoto

Mitsuru Miyauchi

Takeshi Masuda

Kazushige Iso

Muneki Yokoyama

Frequency-divided clock generating section generates a frequency-divided clock having a predetermined driving frequency by dividing a base clock having a base frequency based on a set frequency-division ratio. Division-ratio calculating section calculates a real number ratio of the driving frequency relative to the base frequency and sets a rounded frequency-division ratio by rounding the real number ratio as the frequency-division ratio while calculating a rounding error. Accumulated error calculating section adds the rounding error to an accumulated error when frequency-divided clock generating section generates a frequency-divided pulse which is a one cycle of frequency-divided clock. Division-ratio correcting section uses, as the frequency-division ratio, the rounded frequency-division ratio if the accumulated error does not exceed a threshold value, and a value obtained by correcting the rounded frequency-division ratio based on the threshold value and subtracts the threshold value from the accumulated error if the accumulated error exceeds a threshold value.

Pulsed-motor driving apparatus and pulsed-motor driving method

A transfer correcting method for a thin material transfer apparatus includes detecting a front end of a thin material by the sensor, and transferring the thin material from a position of the sensor, to a processing unit, and further a reference transfer range from the processing unit to produce a first processed thin material portion, and transferring the thin material the reference transfer range to produce a second processed thin material portion, calculating a first correction value based on the reference transfer range and a measured length of the second processed thin material portion and a second correction value based on measured lengths of the first and second processed thin material portions, and correcting the transfer from the sensor position to the processing unit position, and the transfer from the processing unit position based on based on the first and second correction values.

Method of correcting transfer of a thin material and a thin material transfer apparatus

An image forming apparatus includes a number of light emitting elements capable of emitting light beam onto a photosensitive material based on given image information, a number of optical fibers extending between a light source and the light emitting elements for guiding light irradiated from the light source to the light emitting elements, each of the optical fibers having a light receiving end for receiving the irradiated light, and a cooling blower device for cooling the receiving ends of the optical fibers with gas stream. The apparatus further includes a controller operable to execute a pre-blowing/cooling step of operating the cooling blower device for a predetermined period before the light source is turned ON in response to an ON instruction.

Image forming apparatus having cooling monitoring circuit

As a negative film having a multiplicity of perforations provided therein at equal intervals is being transferred, its perforations are detected to produce a corresponding pulse signal. The pulse signal is then fed to a controller which in turn calculates the number of clock pulses for each forty pulses of the pulse signal and determines a transfer distance per clock pulse. Meanwhile, the reference transfer distance is obtained from an interval between the perforations multiplied by forty. A difference between the actual transfer distance and the reference transfer distance is calculated and used for controlling the rotating movement of drive rollers.

Transfer apparatus

Photographic printing apparatus with exposure position rectifying and

A passing movement analyzer is responsive to a pulse signal from a data reader to calculate the time of passing movement of a negative film. The passing of one frame of the negative film is considered detected when two identification codes of the film are read. When the two identification codes are detected by the passing movement analyzer, a drive signal of a driver contains a number of pulses which differs from that of a standard number, and a correction calculator determines that a transfer error exists and adjusts the pulse setting of the drive.

Negative film transfer apparatus and method for correcting standard

A photographic printing apparatus includes a reading device for reading image information from a film, and an exposure condition computing device for computing exposure conditions for exposing a photosensitive material based on the image information read by the reading device. The apparatus further includes an image information converter for converting the image information read by the reading device into image information expected to appear on the photosensitive material when the photosensitive material is exposed to the image information on the film under the exposure conditions computed by the exposure condition computing device. The image information converted by the image information converter is displayed on a monitor. The exposure condition computing device receives instructions through a control panel to correct the exposure conditions for the image information displayed on the monitor, or instructions not to correct the exposure conditions. An exposure device exposes the photosensitive material under exposure condition computed by the exposure condition computing device based on correcting instructions inputted through the control panel. The exposure device is operable in parallel with an input from the control panel to the exposure condition computing device, to exposure the photosensitive material to image information for which the exposure conditions have been corrected based on the correcting instructions from the control panel or for which non-correction instructions have been received.

Photographic printing apparatus and method

The present invention relates to a photographic printing apparatus and method in which an image is printed on the front of a print paper and a respective frame number is printed on the back of the print paper at a predetermined position for a plurality of frames of a negative film. The present invention accounts for situations in which the frame number fails to be retrieved from location data existing on the negative film. This is achieved by examining and computing information for a group of data assigned before and after the particular frame in question.

Photographic printing apparatus and method for accurately printing frame

A photographic printing method and apparatus for producing photo prints from a plurality of separated negative film pieces of a negative film. The present invention enables efficient printing operation by allowing an operator of the photographic printing apparatus to subject all of the negative film pieces of the negative film, as a whole, to a data reading operation, a print determining operation, and a printing operation. Thus, the present invention eliminates delay times that exist when negative film pieces are individually subjected to the data reading, print condition determining, and printing operations.

Photographic printing method and apparatus

A method of determining settings for photographic printing condition comprises the steps of reading a plurality of identification codes from a negative film on which the identification codes are recorded at intervals of a given distance, and when the identification codes are found of two or more types, determining the settings corresponding to one of the types of which the number of the identification codes is the greatest.

Method and apparatus of determining settings for photographic printing

A method of inspecting a negative film in a photographic processing apparatus includes the steps of using a detector to detect location data (i.e., preforations) arranged at equal intervals on the negative film, electrically comparing the detected location data with equally distanced reference location data having a regularity and assigned to a standard negative film, and automatically stopping the advancing movement of the negative film upon finding a fault in the regularity of the detected location data.

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Wakayama, Japan

Toshiro Akira