Abstract: When replacing a small-volume sheet tray unit which is accommodated in an accommodation space of a base frame of an image forming apparatus body, with a large volume sheet tray unit, a sub-frame is integrally joined and fixed at a bottom of the base frame.

Abstract: A laser recording apparatus with a laser recording unit which is movable while held horizontal at all times. The laser recording apparatus is constructed of a first frame including the bottom section of the apparatus and a second frame supported by the first frame in a manner which allows pivotable rotation of the second frame for opening the apparatus, wherein a laser recording unit including laser scanning means is supported by the second frame on the rotation fulcrum, and the laser scanning means is held horizontal to the bottom section of the apparatus before, during and after release of the second frame from the first frame.

Abstract: A sheet supplying device has at least one sheet stacking portion for stacking a plurality of sheets to be fed, a unit for drawing the sheets out of the sheet stacking portion to feed the drawn sheet to a predetermined path, and a unit for returning a sheet into the sheet stacking portion. This sheet is drawn by the drawing unit but stayed in a position that the leading edge thereof is out of the sheet stacking portion.

Abstract: A paper feeding apparatus is provided with a paper feed roller supported rotatably by an image forming system body via a roller shaft, a paper feeding table which can be drawn freely in the axial direction of the roller shaft from a paper feed opening of the image forming machine body, a paper feeding hopper guided and supported by the paper feeding table so as to be movable freely to and from the paper feed roller horizontally, and in a direction orthogonal to the axial direction of the roller shaft, and an interlocking device which moves the paper feeding hopper freely to and from the paper feed roller in an interlocking motion with the drawing and restoring operation of the paper feeding table. Thereby, when the paper feeding table moves backward from the front, the paper feeding hopper is moved to the side of the paper feed roller along guide rails by the interlocking device.

Abstract: A projecting device comprising an array of axial element lens systems, wherein each element lens system includes a single bar lens having an axial length larger than the effective aperture and adapted to form an intermediate image of a pixel of the object plane and an erect image of a magnification of unity not vertically nor laterally inverted in such a manner that the light intensity on the image plane corresponding to said pixel is defined in the form of Gaussian distribution by the eclipse of the aperture. The element lens systems are arranged in a plane perpendicular to the optical axis so as to cause the light intensity distributions of said systems to mutually overlap in the peripheral areas thereof on the image plane, wherein each row of the systems in the array is displaced by a half pitch with respect to the neighboring row to constitute a staggered arrangement thereby achieving a uniform exposure distribution, integrated in time, in the scanning direction.

Abstract: A card conveyor device comprises a card guide path the transport means being spaced by a distance less than the length of the card, along which a card for reading or writing information therein is guided in a predetermined direction, first and second transport means adapted to engage the card to thereby move the same along the card guide path, drive means for the card transport means, detector means for detecting the position of the card on the guide path, and control means effective to bring the card transport means into or out of engagement with the card as determined by a signal from the detector means.

Abstract: A selective switching circuit which is operative to successively switch a plurality of other circuits, one at a time in a predetermined order, into an existing circuit configuration. An embodiment of the invention is described in relation to a magnetic strip card writing device, whereby information to be written on each of a plurality of strips is successively stored in corresponding registers, and later applied to the strips all at one time. Information in any of the registers may be preserved therein, with new information to be recorded being directed into the next ordered register.

Abstract: A card reader protecting device is provided which prevents any wrong card or foreign substance from being pushed thereinto by providing a material to be detected such as metal foil for indicating the authenticity of any normal card, and detecting adaptive signals produced by such a material, said device comprising a detection circuit for detecting said material, and a control circuit for controlling feed of said normal card to the card reader.

Abstract: An information writing device is used to write information on a card such as magnetic card. Information to be written on a card is manually fed into the device through a keyboard. The card may be reciprocated through a driving unit to write information thereon during its forward stroke and to read out the information during its backward stroke. The information read out is collated with the input one to visually indicate resulting coincidence or non-coincidence thereof.