Abstract: 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.

Abstract: The inventive apparatus includes a driving clock generating section generating a driving clock having a driving frequency and driving a pulsed motor based on an inputted base clock having a base frequency; wherein in a predetermined period. The driving clock generating section operates in a through-output mode in which the base clock is outputted as the driving clock and in an idle mode in which during an idle period a stationary signal not including any pulse is outputted as the driving clock. The idle period is configured such that an average frequency of the driving clock during the predetermined period is equal to the driving frequency.

Abstract: A frequency-divided clock generating section 4 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. A division-ratio calculating section 2 calculates a real number ratio of the driving frequency relative to the base frequency and sets a rounded frequency-division ratio obtained by rounding the real number ratio as the frequency-division ratio and calculates a rounding error in the rounding of the real number ratio. An accumulated error calculating section 3 adds the rounding error to an accumulated error when the frequency-divided clock generating section 4 generates a frequency-divided pulse which is a one cycle of frequency-divided clock.

Abstract: An image forming apparatus includes a conveying section for withdrawing and conveying a printing medium stored in the form of a roll, a printing section for effecting a printing operation on the printing medium, a decurling device for correcting curling in the printing medium and a controlling section. The decurling device is disposed on the downstream side of the printing section. The controlling section controls such that a decurling operation to be effected before the printing operation and a decurling operation to be effected after the printing operation are effected by the decurling device.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A photographic printing apparatus including a lens controlled to be positioned at a printing position, immediately adjacent a film negative, during photographic printing operation of the apparatus and at a normal position, displaced from the film negative, during other operations of the apparatus. Positioning the lens at the normal position, displaced from the film negative, enables the lens to be more easily protected and adjusted. The apparatus further includes a sample print detector apparatus comprising a CCD camera for capturing the sample print for display on a video monitor with a print position recognizing cursor. Key-subject points are specified with the cursor and mismatch between the key-subject points is determined in order to provide correction of filming-position. A rotating mechanism is also provided for rotating a negative mask member, lens member and exposure station by an identical angle of rotation to obtain a predetermined angle of exposure.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: 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.

Abstract: A negative detection device comprising the likes of a CCD camera and line sensors is incorporated in a 3D photographic printing apparatus in which a lenticular sheet is used. The negative detection device measures the positional shift of the key subject of the 2D negative. If the key subject shift exceeds a predetermined threshold value, a correction is introduced to regulate the spacial parallax of a background object. If the key subject shift is less than a predetermined threshold value a correction is introduced to regulate the spacial parallax of a foreground object. Exposure is performed after positional adjustments are made.

Abstract: The lens moving mechanism of a printing/developing apparatus has a pulse motor for moving the holding member of the exchangeable lens in the directions X and Y to finely adjust the position of the lens. The lens moving mechanism is controlled by a computer. The movement and position of the lens are specified by inputting numeric values, thus adjusting the position freely. The specified position of the lens is stored as channel data corresponding to each print channel.