摘要:
A copying paper guiding device comprising a lower guide plate (204) and an upper guide plate (206) located opposite to each other. The lower guide plate (204) has provided therein laterally in spaced apart relationship a plurality of rising pieces (238) rising from the upper side of its main flat portion (208) and extending in the direction of movement of a copying paper sheet. The upper guide plate (206) has provided therein laterally in spaced-apart relationship a plurality of hanging pieces (240) hanging from the lower side of its main flat portion (228) and extending in said direction of paper movement. Openings (244) are formed on the main flat portion (228) of the upper guide plate (206). The upper edges of the rising pieces co-operate with the lower edges of the hanging pieces to define a path of movement for the copying paper.
摘要:
An automatic developing bias control device for an electrophotographic copying machine in which a document image is led onto a photoreceptor through a lens to form an electrostatic latent image on the photoreceptor and the electrostatic latent image is visualized into a toner image by a developing device, the automatic developing bias control device operating on the principle of detecting the density of the document image by means of a detecting element disposed inside or outside the optical path, delaying the output detection signal for a predetermined time, and imposing a developing bias potential corresponding to the delayed output detection signal on the developing device to thereby provide copy image quality faithful to the original.
摘要:
An electrostatic copying apparatus having a semiautomatic document supplying and discharging device and a sorter in addition to its main body. The main body of the apparatus comprises a rotatable photosensitive member, means for forming a latent electrostatic image on the photosensitive member, developing means, transfer means, means for conveying a copying paper, cleaning means and a heat fixing device. Various improvements have been made in the manner of controlling cleaning, the manner of controlling the delivery of a copying paper, the manner of controlling troubleshooting and display, the manner of controlling interrupting copying, the manner of controlling heating, the manner of distribution electric power, etc.
摘要:
A copying apparatus equipped with a sorter 2 which is arranged to accommodate through classification, a plurality of copy paper sheets 6, 7 in correspondence to a single original document, discharged from a main body 1 of the copying apparatus, into a plurality of bins 52 successively shifted to a paper discharge position 73 by a shifting means 53. The copying apparatus comprises a copy number preset key 100, memory means 173 for memorizing the preset number of copies, first counter 171 for counting the number of copied paper sheets, second counter 172 for counting the number of discharged copy paper sheets, means 87 for stopping the copying operation when the counted value of the first counter 171 is agreed with the memorized preset number of copies, a sort key 106 for selecting a mode for accommodating the copy paper sheets 6, 7 into the bins 52 through classification one single sheet by one single sheet, and an electrical circuit 152 for applying signal to the shifting means 53 in order to change the moving direction of the bins 52 when the counted value of the second counter 172 is agreed with the memorized preset number of copies in the sort mode.
摘要:
A detecting device for detecting the amount of toner in dual component developing material is less than the predetermined level in a developing device for an electrostatic copying apparatus which comprises a hopper (4) for supplying the toner (5), a stirring roller (9) for stirring a carrier and the toner (5) from the hopper (4), detecting means for detecting the amount of developing material provided near the stirring roller (9) to mix the toner (5) supplied from the hopper (4) with the carrier, discriminating means for discriminating the output signal from the detecting means for predetermined interval during the rotational period of the stirring roller (9), and an indicating element (46) in response to the output signal from the discriminating means for indicating the amount of the toner (5) in developing material is less than the predetermined level. Since it is indicated when the toner (5) in the developing material is more reduced than the predetermined level, the toner (5) is supplied according to the indication, therefore, the undesirable detrioration of the copy density is prevented.
摘要:
An electrostatic copying apparatus comprising - a transparent plate -on which to place a document to be copied, - an optical system - for projecting the image of the document onto an electrostatographic photosensitive member in an exposure zone located along the moving path of the photosensitive member, and -a driving means - for reciprocating one of at least a part of the optical system and the transparent plate is characterized in that -said driving means includes - a backward movement restricting means - for stopping the backward movement of said one of at least a part of the optical system and the transparent plate fully accurately at a predetermined forward movement start position.
摘要:
A copying paper guiding device comprising a lower guide plate (204) and an upper guide plate (206) located opposite to each other. The lower guide plate (204) has provided therein laterally in spaced apart relationship a plurality of rising pieces (238) rising from the upper side of its main flat portion (208) and extending in the direction of movement of a copying paper sheet. The upper guide plate (206) has provided therein laterally in spaced-apart relationship a plurality of hanging pieces (240) hanging from the lower side of its main flat portion (228) and extending in said direction of paper movement. Openings (244) are formed on the main flat portion (228) of the upper guide plate (206). The upper edges of the rising pieces co-operate with the lower edges of the hanging pieces to define a path of movement for the copying paper.