Abstract: A display device of the present invention includes a display unit and a display control unit. The display unit is configured to be installed in an electronic apparatus. The display unit is configured to display electrically an image. The display unit is configured to maintain display of the image even if a voltage application is stopped. The display control unit is configured to control the display unit to display an image as an emblem.

Abstract: An image-forming machine which forms an image on a photosensitive material drum which passes through the steps of electric charging, exposure to light, developing and transfer. A pair of side walls are disposed opposite to each other, spaced at a distance. Inner wheels of bearings have an inner wheel and an outer wheel. The inner wheels are secured to the outer peripheral surfaces of the photosensitive material drum at both ends thereof, and outer wheels of the bearings are secured to the corresponding side walls, so that the photosensitive material drum is rotatably supported by the side walls.

Abstract: An electrostatic copying machine made up of an image-forming unit including a rotary drum having an exposure zone and a transfer zone, an optical system for projecting the image of the document to be copied onto the exposure zone, a copying paper-feeding system including a paper-feeding cassette that can be freely drawn to the front surface of the body of the copying machine, and a copying paper conveying passage for conveying a copying paper fed from the copying paper-feeding means through the transfer zone. A fixing device and a pair of paper-discharging rollers are disposed on the downstream side of the transfer zone. The paper-feeding cassette, image-forming unit, fixing device and the pair of paper-discharging rollers are successively arranged from one side toward the other side in the body of the copying machine within the maximum exposure scanning length of the optical system, and the copying paper conveying passage is arranged substantially linearly.

Abstract: In an image forming apparatus using a transfer unit of a roller transfer method, the contact between the transfer unit and a photoreceptor drum can easily be canceled. The transfer unit is brought into contact with the photoreceptor drum by supplying an upward pushing force to a supporting member of the transfer unit, and a lever engaging with the supporting member to push down the supporting member is provided to connect with a front cover of the apparatus body. The transfer roller, the pre-transfer roller for feeding a sheet to the photoreceptor drum and driving force transmitting gears provided therebetween are supported by the same member to fix their relative positions so that the driving force is constantly transmitted from the transfer roller to the pre-transfer roller.

Abstract: An image-forming machine comprising a rotary drum and a cleaning means which removes the toner remaining on the peripheral surface of the rotary drum. The cleaning means includes a support member that extends in the direction of center axis of the rotary drum, a blade-holding member that is mounted on the upper surface of the support member and extends in the direction of center axis of the rotary drum, and a cleaning blade that is held by the blade-holding means and extends in the direction of center axis of the rotary drum. The blade-holding member is allowed to swing on the swing axis that extends in a plane which is substantially perpendicular to the center axis of the rotary drum. An acute angle .alpha. is defined between the cleaning blade and a tangential line of the drum at a portion where the front end of the cleaning blade that is pushed comes into contact with the peripheral surface of the rotary drum, on the downstream side as viewed in a direction in which the rotary drum rotates.

Abstract: A developing unit comprises a developer container having an agitation space for agitating developer therein and a toner hopper for feeding toner to the agitation space of the developer container. A lower wall of the toner hopper includes a toner drop port allowing toner to fall into the aforesaid agitation space. On a surface of the lower wall exposed to the agitation space, disposed is a partition wall surrounding the periphery of the toner drop port. The partition wall defines a non-agitation space. The toner is allowed to fall from the toner drop port smoothly into the agitation space through the non-agitation space which is not affected by the agitation.

Abstract: If it is desired to display the number of copies which can be outputted corresponding to the defined capacity of a developer which is determined by an image forming apparatus, a document which is thought to have a substantially average black ratio of the respective black ratios of images actually recorded by the image forming apparatus is prepared. The prepared document is set in reading means. An image of the set document is read by reading means. The black ratio of the image of the document is calculated on the basis of an output of the reading means. The number of copies which can be outputted corresponding to the defined capacity of the developer which is determined by the image forming apparatus is calculated on the basis of the calculated black ratio. The calculated number of copies which can be outputted is displayed.

Abstract: In a transfer unit of a non-contact roller transfer method, both ends of a transfer roller shaft are supported independently of each other so as to be movable upward and downward, and an upward pushing force is provided thereto. A gap maintaining roller provided in the vicinity of each end portion of the transfer roller shaft is always in contact with the surface of a photoreceptor drum so that the gap between the surface of the photoreceptor drum and the transfer roller is maintained uniform and fixed. Further, both ends of a pre-transfer guide for guiding the sheet to the photoreceptor drum are supported in a manner such that the movement of each end accords with the movement of the end portion of the transfer roller, so that the distance between the photoreceptor drum and the pre-transfer guide is maintained uniform and fixed.

Abstract: An image scanner serving as an image reading device reads an image of an original by an image sensor. A first read mode in which an image of a stationary on a transparent platen is read by moving the image sensor and a second read mode in which an image of an original read by the image sensor when stationary. An original section is separated from the automatic original conveying section, and can be opened or closed by a small operating force. In the second read mode, an original set on an original tray mounted on an upper portion of the original pressing section is reversed in the automatic original conveying section and then, is discharged to a discharge stand on an upper surface of the original pressing section. The original tray is not projected toward the side of the image scanner.

Abstract: A transferring apparatus transfers a toner image formed on the surface of a photoreceptor drum onto a sheet. The photoreceptor drum surface and a transfer roller are arranged in such manner that a gap larger than the thickness of the sheet is left between the photoreceptor drum and transfer roller, and a lower guide member for guiding the sheet in such direction that the sheet abuts the drum surface at a predetermined angle is arranged between a resist roller pair and the drum. The sheet which abuts the drum surface by way of the upper surface of the guide member is in close contact with the drum surface while being bent and deformed along the drum surface. A conveying roller is provided, opposite the upper surface of the lower guide member, with a predetermined gap between, at a position close to but out of contact with the drum surface. The conveying roller may also be arranged to contact the transfer roller.

Abstract: In a facsimile apparatus, a received image data is stored in a memory, and an image represented by the image data is enlarged according to an enlargement ratio determined by the user and is outputted onto recording paper. The image data stored in the memory is maintained until another image data is received.

Abstract: An image-forming machine having a conveying passage for conveying a sheet material through a transfer zone, a first and a second feed device for feeding the sheet material to the conveying passage, a first feed passage for conducting the sheet material delivered from the first feed device to the conveying passage, a second feed passage for conducting the sheet material delivered from the second feed device to the conveying passage, and a first and a second opening-closing member for opening and closing the first and second feed passages. Various improvements are made on the first and second opening-closing members.

Abstract: An image-forming machine comprising a conveying passage for conveying a sheet material through a transfer zone, a first and a second feed system for feeding the sheet material to the conveying passage, a first feed passage for conducting the sheet material delivered from the first feed system to the conveying passage, a second feed passage for conducting the sheet material delivered from the second feed system to the conveying passage, and a first and a second opening-closing member for opening and closing the first and second feed passages. Various improvements are made on the first and second opening-closing members.

Abstract: A supporting and driving mechanism including a rotatable body and a supporting unit for assuring stable support and rotation of the rotatable body for a long time. The mechanism includes an axis member at either end of the rotatable body, a driven gear at one end of the rotatable body, two rollers and a driving gear of the supporting unit. The two rollers are placed parallel to each other and the distance between the closed surfaces of the rollers is smaller than the diameter of the axis member of the rotatable body. The driving gear engages the driven gear and transmits a driving force to the driven gear of the rotatable body. The driving force applied from the driving gear to the driven gear directs between the centers of the two rollers when the driving force is translated so that the origin of the force is brought to the center of the axis member of the rotatable body.

Abstract: A paper delivery apparatus for delivering paper to a predetermined place by driving a roller support shaft with a the paper coming in contact with roller attached to the roller support shaft. The roller support shaft and the drive shaft are connected to each other between a pair of lateral plates. Bearings are attached to the roller support shaft at both ends thereof and are axially movably supported by bearing support members. The roller support shaft together with the bearings may be readily removed from the bearing support members by moving the roller support shaft or the bearings in the axial direction.

Abstract: A cleaning device in an image-forming machine. A supporting frame structure includes a toner recovery box receiving space and a toner recovery box to be inserted into the receiving space. A toner inlet extending in the front-rear direction is formed in the toner recovery box. The cleaning device further includes a cover for recovering or closing the toner inlet at the time of withdrawing the toner recovery box from the receiving space, thereby preventing scattering of toner from the toner inlet.

Abstract: A cleaning unit for an electrophotographic copier is provided to remove toner and developing material from a photo-sensitive material from which a developed image has been transferred and includes a housing having an opening facing the photo-sensitive material. A main blade member is provided in the housing of the cleaning unit and has an upper portion which abuts against the photo-sensitive material through an opening of the housing to scrape the toner and developing materials off the photo-sensitive material. The cleaning unit further includes a receiving blade covering the lower portion of the opening, and having an upper end portion abutted against the photo-sensitive material to allow the toner and developing material scraped off by the main blade to fall into the opening and a film-shaped reinforcing member bonded to the surface of the receiving blade facing the inside of the housing to prevent deformation of the receiving blade.

Abstract: Toner collecting apparatus in which a toner collecting container for collecting toner remaining on the surface of a photosensitive drum in a copying machine or a facsimile machine is provided, at the lower side thereof, with a toner receiving port, a sponge roller for rotatingly feeding collected tone disposed adjacent the toner receiving port, and an optical detector for detecting that a predetermined amount or more toner has been collected in the toner collecting container. The optical detector, is disposed on the toner collecting container. At least those portions of the toner collecting container located opposite to the optical detector are made of a light-permeable material.

Abstract: A cleaning unit for an electrophotographic copier is provided to remove toner and developing material from a photo-sensitive material from which a developed image has been transferred and includes a housing having an opening facing the photo-sensitive material. A main blade member is provided in the housing of the cleaning unit and has an upper portion which abuts against the photo-sensitive material through an opening of the housing to scrape the toner and developing materials off the photo-sensitive material. The cleaning unit further includes a receiving blade covering the lower portion of the opening, and having an upper end portion abutted against the photo-sensitive material to allow the toner and developing material scraped off by the main blade to fall into the opening and a film-shaped reinforcing member bonded to the surface of the receiving blade facing the inside of the housing to prevent deformation of the receiving blade.