Abstract: There is provided a method of driving an electrophoretic display device including a display unit that has a plurality of pixels and an electrophoretic element disposed between substrates forming one pair. The method includes setting an area that at least includes a pixel forming an image component that is formed to have a first gray scale and a pixel that is disposed to be adjacent to the pixel forming the contour of the image component and represents a second gray scale as an image removing area and selectively changing the pixels that constitute the image removing area to have the second gray scale.

Abstract: The apparatus for coating a photosensitive material (M) with a processing liquid comprises an activator coating mechanism (43) for metering a constant amount of activator to apply the metered activator to the photosensitive surface of the photosensitive material fed by the pair of introduction rollers. The activator is supplied form a plurality of discharge holes (121) bored in a pipe (122) and is once received by a receiving portion (124). The activator is diffused horizontally and flows downwardly through a plurality of openings (123) bored at the bottom of the receiving portion onto a coating roller (125). The activator is diffused again at the contact between the coating roller and a diffusion film (126) and is coated to the photosensitive material by the coating roller.

Abstract: The apparatus for coating a lithographic printing plate or a photosensitive material (M) with a processing liquid comprises first and second pairs of feed rollers (41,42: 44,45) for feeding the photosensitive arterial along a predetermined path. A coating roller (125) is provided therebetween. Guide members (48, 49) contact the bottom surface of the photosensitive material and to guide the photosensitive material. The contacts of the guide members and the photosensitive material are at the levels higher than the coating level at which the processing liquid is applied to the photosensitive material to prevent uneven coating of the photosensitive material with the processing liquid after the trailing edge of the photosensitive material has passed the first pairs of the feed rollers (41,42).

Abstract: The invention provides an apparatus for developing and fixing a silver salt photosensitive material. The apparatus uniformly applies a fixed amount of new or unused processing solution onto the photosensitive material so as to maintain processing quality and reduce a required volume of the processing solution and labor for maintenance.New or unused developer supplied from a developer nozzle 82 and temporarily stored in a basin 143 is uniformly held in pores on the surface of a developer applying roller 93. While the developer applying roller 93 is rotated, the new developer held in the pores of the roller 93 is applied onto the surface of a photosensitive material PM, which is pressed against the circumference of the roller 93 during conveyance, to develop the photosensitive material PM. The apparatus of the invention develops the photosensitive material with new developer applied to the roller 93 and thereby maintains processing quality even when a large number of photosensitive materials PM are processed.

Abstract: The invention provides an apparatus for processing silver salt photosensitive material with a small amount of processing solution. The processing solution uniformly reacts with the photosensitive material for maintaining high processing quality.The apparatus of the invention includes: a process tank 96 which is relatively small in volume; and a developer supply roller 98 which is partly soaked in the processing solution. New or unused developer is temporarily stored in a temporary reservoir 100 formed on the circumference of the roller, held in pores of sponge formed on the surface of the developer supply roller, and supplied to an inlet of photosensitive material PM in the process tank 96 with rotation of the roller 98. The new processing solution is uniformly diffused, along the width of the photosensitive material PM, in the vicinity of the inlet in the stored processing solution. Accordingly, the photosensitive material PM is evenly and efficiently processed.

Abstract: A reproduction magnification of an image to be reproduced is inputted through a inputting device. A projection optical system is adjusted according to the reproduction magnification, and then projects image light reflected from an original in the form of a slit onto a photosensitive material sheet. As projecting the slit image light, the original and the photosensitive material sheet are synchronously fed each other.

Abstract: The slit exposure process camera keeps a photosensitive material flat in the exposure position, and further makes a useless area on the material smaller. The apparatus includes: a pair of feeding rollers 25 disposed upstream from the exposure position for conveying a photosensitive material PM; a transport guide 61 with a flat surface arranged downstream from the rollers 25; and a pressing plate 70 with sufficient elasticity and abrasion resistance for pressing the photosensitive material PM downward. The photosensitive material PM thus pressed runs in contact with a surface of the transport guide 61 and is thereby kept sufficiently flat. Since the process camera does not include another pair of rollers downstream from the exposure position, image reproduction is not disturbed by nipping of the photosensitive material with the downstream rollers, and an unusable area on the end of the photosensitive material is made relatively small.

Abstract: A synchronous driving apparatus for use in a scanning exposure type reproducing apparatus. A scanning system and a recording sheet are moved in synchronization without regard to changes in temperature.

Abstract: A developing apparatus for developing a presensitized plate comprises a developer tank for storing a developer, a feed roller provided at an upper portion of the feeding side of the developer tank for feeding the presensitized plate into the developer tank, a discharging roller provided at an upper portion of the discharging side of the developer tank for discharging the presensitized plate from the developer tank, a feeding belt extending below the feed roller and from the surface of the developer into the developer for guiding the presensitized plate, a pressing roller for pressing the presensitized plate fed by the feed roller onto the conveyor belt, and a guide plate provided between the pressing roller and the discharging roller for guiding the presensitized plate.

Abstract: A multiple-exposure apparatus in a graphic arts copying machine of a slit-exposure type includes an original holding member mounted for horizontal reciprocating motion. An optical exposure system exposes an optical image of a slitwise segment of the original onto a photosensitive material. A moving device reciprocates the holding member and conveys the photosensitive material relative to the optical system. The moving device is adapted to synchronize the advance of the original holding member and the conveyance of the photosensitive material. A data setting device is provided for setting predetermined data concerning a predetermined multiple-exposure layout mode of the original onto the photosensitive material. A control unit controls the operation of the optical exposure system by enabling and disabling the exposure by the optical system and also synchronizes the moving device in an associated relationship as a function of the predetermined set data.

Abstract: A process camera apparatus for forming a halftone image and a line image on a photosensitive material such as a positive or negative film. The apparatus comprises a base; a transparent platen provided on the base; a light-shielding cover covering the upper side of the transparent platen such as to form a light-shielded region on the transparent platen; a screen device including a contact screen and a screen frame for supporting the contact screen, the screen device being withdrawably disposed on the portion of the transparent platen within the light-shielded region; a pair of rollers disposed adjacent one end of the base and adapted for conveying the photosensitive material into the light-shielded region; and a light-shielded condition maintaining device adapted to maintain the light-shielded condition in the light-shielded region when the screen device is being taken out from the light-shielded region.

Abstract: A sheet inserting guide for engaging a flexible sheet material with sheet transfer device comprising a base plate, and a restriction plate spaced from the base plate to define a sheet insertion port therebetween at an end adjacent said sheet transfer device. The restriction plate defines at least an inwardly tapered side edge at the other end thereof away from said sheet transfer device, the portion of said restriction plate defining said tapered side edge preferably being bent outwardly at an angle relative to said base plate.

Abstract: A copying machine of reproducing the images in the original on a sheet, the copying machine comprising a motor for driving an endless belt running on a plurality of pulleys; an original carrier secured to the endless belt so that the original carrier reciprocally moves in a fixed range in accordance with the movement of the endless belt; a sheet feeding device having a pair of feed rollers adapted to feed the sheet therebetween frictionally, and a driving roller kept in contact with one of the feed rollers so that friction drive is imparted thereto, the driving roller having an input pulley on which the endless belt runs, thereby ensuring that the amount of movement of the original carrier is transmitted to the feed rollers through the driving roller; and the driving roller and the input pulley being made to have the same diameter with a material having the same coefficient of expansion.

Abstract: A sheet material contacting device comprising a flexible sheet-like pressing member having a sufficient weight to force a sheet material against a planar transparent plate, a pair of rigid support members fixedly holding opposed edges of said pressing member, and means for vertically moving said pressing member relative to said transparent plate.

Abstract: There is provided a reproduction camera comprising an optical sensor provided at a location to which light from a light source on the image side can be reached and which is substantially outside the image focal plane and not near by the same, a correcting device by which a quantity of light received by the optical sensor has a relation with a quantity of light received on the image focal plane, and a control system for controlling exposure according to a signal corrected by the correcting device.

Abstract: A process camera for printing pictures of different sizes in the desired display positions on a photosensitive material to obtain a press plate, wherein a manuscript holder for mounting a manuscript to be printed, a lens holder including a focusing lens, and a photosensitive material holder for mounting a photosensitive material are aligned in series on and along the light axis, the manuscript holder being movable towards and away from the lens holder, and the photosensitive material holder being movable in the perpendicular directions to the light axis, and wherein a plurality of register pins and respective drive means for positioning the manuscripts of different sizes are provided in the manuscript holder, and each of the register pins is independently projected beyond the manuscript holder by the respective drive means.