摘要:
A projecting apparatus comprises support device for supporting an original, a projection optical system for forming the image of the original, an optical element disposed on the image side of the projection optical system to cause a principal light ray having entered from the original through the projection optical system to travel in parallelism to the optic axis of the projection optical system, and control device for varying the imaging magnification of the original by the projection optical system with the spacing between the exit pupil of the projection optical system and the optical element being kept constant.
摘要:
There is disclosed an apparatus for obtaining image signal by tonal processing of an input signal. Pulse-width modulation of the input signal is achieved thorugh comparison with a second signal of a predetermined shaped, for example a triangular signal. In order to avoid the influence of fluctuating factors in pulse-width modulation, the apparatus also has a third signal generator, and the pulse-width modulated signal or a pattern signal generated by the third signal generator is selectively used for image formation.
摘要:
A reactive polymer having the degree of polymerization in the range of 5 to 3,000, with 60 mole % or more of the whole constituent units comprising the constituent units expressed by formula (I) ##STR1## wherein Z indicates a hydrogen atom or a univalent cation; m is an integer 1 to 4:and has an active group expressed by formula (II) at the carboxyl end of the main chain ##STR2## wherein X indicates a hydrogen atom or a group which can form an active disulfide linkage together with a neighboring sulfur atom; W is a divalent organic group; and R.sub.1 represents a hydrogen atom or an alkyl group having 1 to 4 carbon atoms.Since this reactive polymer can bind to cytotoxic substances, which contain an amino group or imino group in the molecule by way of the carboxyl group of the side chain and it also can bind to, for instance, antitumor immunoglobulins by way of an active group (thiol group or active disulfide group) at the end of the main chain, it can be used as a polymer carrier in the preparation of target seeking antitumor drugs.
摘要:
[Problems] A disposable cell counting board in which a space formed by a counting board body and an upper plate is fixed in advance, and which does not require assembling by a cell counting worker, and which can be mass-produced at low costs, is provided.[Means for Solving Problems] The cell counting board comprises a main body and a cover plate attached to the main body. The main body comprises a planar lands positioned at a lower position by a predetermined distance with respect to the top face of the other part than the lands, a counting sections provided at the lands, and four projection sections in the vicinity of the lands for positioning and fixing the cover plate above the lands. The cover plate has engagement holes formed at locations corresponding to the projection sections. A space of the predetermined distance, 0.1 mm, is generated between the top face of the lands and the bottom face of the cover plate, when the cover plate is attached to the main body by engaging each of the projection sections with the corresponding engagement hole.
摘要:
An image processing apparatus which includes an image signal input device for outputting a first image signal including at least three signals corresponding to cyan, magenta and yellow, respectively, an image signal converter for converting at least one of the signals included in the first image signal into N (N is an integer greater than one) second image signals corresponding to N inks of different concentrations of a same color family, a black abstraction device for performing black abstraction on each of N second image signals individually to produce a third signal, and a signal processor for performing a UCR processing and black inking processing on the second and third signals to produce fourth signals.
摘要:
An image recording apparatus using a plurality of recording heads that can prevent black lines from occurring at boundaries of each scanning of the recording heads. The total recorded ink volume at the boundaries is positively reduced so that the black lines and the overflow of ink are prevented. The apparatus includes at least a pair of a dark head for discharging relatively dark ink and a light head for discharging relatively light ink, and separates an input image signal into image signals applied to the dark and light heads using at least two tables. The two tables, one for edge nozzles of each recording head and the other for the remaining nozzles, separate the input image signal independently so that the total ink volume discharged from the edge nozzles are limited to a relatively small amount. Further, the total volume of inks discharged from the edge nozzles of the recording heads are positively reduced by performing black abstraction processing, UCR processing and black inking processing on the basis of the image signals after the separation by the tables, which image signals are linearly correspond to the ink volume.
摘要:
An image recording apparatus for recording an image in accordance with input image data supplied thereto using a recording head having a plurality of recording elements arranged thereon. The apparatus includes a sensor for detecting and determining variation the densities of the recordings produced by the respective recording elements, at predetermined timing in image recording operations, and adjusting means for adjusting driving signals applied to the respective recording heads in response to an output of sensor.
摘要:
An image forming apparatus includes a movable image carrier, and a plurality of developing devices for developing a latent image formed on the image carrier. The plurality of developing devices contain developing agents of different colors and are arranged in the direction of movement of the image carrier. The plurality of developing devices are arranged in an ascending order of the visual sensitivity of the colors of the developing agents from the upstream side in the direction of movement of the image carrier, for example, in one aspect cyan, magenta, yellow and black developing devices may be sequentially arranged from an upstream side to a downstream side and operated in an order of cyan, magenta, yellow and black.
摘要:
An image forming apparatus includes an image bearing member for bearing an image, a rotatable recording material bearing member for bearing a recording material and conveying the recording material to a transfer station, the image formed on the image bearing member being transferred onto the recording material born on the recording material bearing member at the transfer station, and a cleaning means capable of being contacted with a surface of the recording material bearing member to clean the surface of the recording material bearing member at a cleaning station. When a length (L1) of a recording material born on the recording material bearing member in a rotational direction of the recording material bearing member is greater than a distance (L2) from the transfer station to the cleaning station along the rotational direction of the recording material bearing member, after the image is transferred onto the recording material born on the recording material bearing member, the recording material is conveyed to the transfer station again.
摘要:
An image processing apparatus comprises image signal input means, tone means for toning the input image signal to produce a pulse width modulated signal, beam generation means for generating a beam modulated by the pulse width modulated signal, and detection means for detecting an output power of the beam generated by the beam generation means. The tone means switches an output mode of the pulse width modulated signal in accordance with the detection output of the detection means.