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| Number | Title | Issue Date |
| 5225877 | Low cost and high precision scheme for photoreceptor belt steering control A control method and apparatus for tracking an endless belt. The tracking apparatus includes a roller and a belt steering roller. A span of the belt defined between the roller and the belt steering roller travels in a plane and both the roller and the bel... | 07/06/1993 |
| 5216475 | Pulley driven image forming apparatus An image forming apparatus has at least one image carrier, a device for forming a latent image on the image carrier at a latent image forming position, a device for developing the latent image on the image carrier at a developing position, and a device fo... | 06/01/1993 |
| 5204728 | Unlimited document feeder To enable running in a multiple document load mode, an interface procedure is used to specify more than one bin in a "bins for each set" selection and the desired bin capacity is set in the Bin Capacity selection. From 1 to 6 bins per set may be selected.... | 04/20/1993 |
| 5185627 | Electrophotographic printer with media motion motor control An electrophotographic printer 10 having a control system 51 for controlling a stepper motor 50. The control system 51 includes a motor speed drive circuit 52, a microprocessor 54, and a clock 58. The motor speed drive circuit 52 has a programmable driver... | 02/09/1993 |
| 5172180 | Image forming equipment with variable stepwise drive means operation Image forming equipment for performing a predetermined image forming operation by use of a stepwise drive source such as a stepping motor or pulse motor. Either one of a recording medium and a record head is driven by a pulse motor, and whether or not it ... | 12/15/1992 |
| 5153655 | Lateral shift control for endless belt and fixing apparatus using same A lateral shift control apparatus for an endless belt includes a driver for applying to the endless belt a lateral shifting force in both lateral directons; a switching device for switching the direction of the lateral shifting force by the lateral shifti... | 10/06/1992 |
| 5140379 | Position control apparatus for transfer drum in electrostatographic printer/copier In an electrostatographic printer and/or copier, toner images are transferred from the outer surface of a rotating image process drum to a receiver sheet carried on the outer surface of a rotating transfer drum as the respective drum surfaces pass through... | 08/18/1992 |
| 5105208 | Image forming apparatus with good response motor servo control Controlling a motor having a high standard frequency in a manner to be given priority when servo-controlling a plurality of motors allows the delay time of motor control to be reduced and the servo control of the motors to be performed with a good respons... | 04/14/1992 |
| 5099278 | Apparatus for switching and driving a plurality of driven system The invention provides an apparatus for switching and driving a plurality of driven systems. There are provided a driving shaft coupled with a drive motor; a control shaft coupled with a position control motor; and a plurality of spring clutches and a plu... | 03/24/1992 |
| 5087941 | Xerographic reproducing machine for controlled copying of manually disposed documents A xerographic reproducing machine including a manually operable start switch, a circuit responsive to actuation of the start switch for cycling from a standby condition to an operating condition for performing a process for copying a document, the copying... | 02/11/1992 |
| 5030174 | Driving mechanism and image forming apparatus comprising the same A driving mechanism includes a timing belt stretched over a plurality of belt pulleys. The timing belt has a first surface provided with a group of teeth and a second surface provided with another group of teeth arranged with a pitch different from that o... | 07/09/1991 |
| 5030993 | Synchronous driving apparatus for a scanning exposure type reproducing apparatus 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.... | 07/09/1991 |
| 4977428 | System for drive control of toner agitator in image-forming apparatus In an image-forming apparatus (1), such as an electro-graphic printer, in which an electro-static latent image formed on an photoconductive drum (5) is reproduced by a toner (15), having a pulse motor (M) for driving an agitator (13) built-in to a develop... | 12/11/1990 |
| 4967239 | Printer having a reversible motor and separate transmissions systems An electrostatic printer includes a photoconductive drum (2), a developer (5) for forming a toner image on a surface of the drum (2), a pickup roller (11) for removing a medium (10) in a cut sheet form from a hopper (8), a registration roller (12) for int... | 10/30/1990 |
| 4959689 | Electrophotographic plate-making machine with independent motors for moving the copy holder, conveying rollers and focus region rollers An electrophotographic plate-making machine including a light source and a movable copy holder forming a scanning exposure system for focusing a light at a focus region. A first electric motor is connected to the copy holder, and a sensitive paper is conv... | 09/25/1990 |
| 4931834 | Image forming apparatus An image forming apparatus includes a rotatable image carrier, a motor for rotating the carrier forwardly and reversely, and transmission mechanisms for transmitting the drive force of the motor to a driven portion other than the image carrier when the ca... | 06/05/1990 |
| 4912517 | High-volume projector and rotary xerographic processor The present invention provides improved method and apparatus for a high-volume projector and rotary xerographic processor. The unique apparatus produces dry, permanent positive copies from continuous fed microfilm which can be reproduced on plain paper co... | 03/27/1990 |
| 4879580 | Image processing apparatus An image processing apparatus including a photoconductive element, an optical unit and a fixing device such as a copier or a facsimile apparatus. A mechanism for driving a fixing roller and a pressing roller which constitute the fixing device is supported... | 11/07/1989 |
| 4833502 | Image forming apparatus having an image bearing member reciprocally movable in the direction of the rotational axis thereof The present invention prevents a particular portion of a drum-like image bearing member from being physically damaged or chemically deteriorated by the image bearing member being reciprocally moved in the direction of the rotational axis thereof. For this... | 05/23/1989 |
| 4794420 | Device for driving rotary body A device for driving a rotary body which is required to make contact with another rotary body with an even pressure distribution along its length, e.g. a register roller installed in an electrophotographic machine for feeding a paper sheet, a developing r... | 12/27/1988 |
| 4739230 | Control device for controlling motor speed without hunting A control device for use in maintaining a constant driving speed in various rotational objects such as a photosensitive drum, etc. for an electrophotographic reproduction apparatus, the control device being constructed with a driving device; a detecting d... | 04/19/1988 |
| 4719491 | Copier A copier includes one motor for driving a photoconductive element unit, a developing unit, a fixing unit and other units, and another motor for driving an optical system. A clutch is interposed between the various units and the motor adapted to drive them... | 01/12/1988 |
| 4627711 | Machine shutdown control The present invention is the controlled shutdown of the preregistration, fuser, dedicated duplex tray, and machine exit zones of the copy sheet handling system of a machine. In particular, a control data base includes a packet phase describing the origin ... | 12/09/1986 |
| 4598990 | Toner image fixing device A toner image fixing device includes a driven fixing roller drivingly connected to a driving source and a rotatably mounted follower fixing roller. The follower fixing roller is mounted on a movable supporting member which is mounted for free movement bet... | 07/08/1986 |
| 4585333 | Separated communication between electrophotographic copying machine and its subsystem An electrophotographic copying machine comprises a body for accommodating a number of elements to execute a copying operation, a subsystem such as a sorter for sorting a plurality of copied papers in the copied order on each of shelves, and an optical com... | 04/29/1986 |
| 4582417 | Apparatus for forming images An image-forming apparatus is disclosed which is able to form an image while blanking any unnecessary image portion or extracting any desired image portion at one's will. To this end, the apparatus includes a plurality of light exposing means, an image ar... | 04/15/1986 |
| 4550382 | Filtered inputs The present invention includes a plurality of input/output processors communicating with a master processor. Each of the input/output processors has a filtering mechanism to filter the inputs before transmission to the master over the communication channe... | 10/29/1985 |
| 4487499 | Synchronized document feed for electrophotographic imaging copier apparatus In an electrostatic copier, a patterned original is moved along the top wall thereof in synchronism with the movement of a flexible electrophotographic looped member. A single electric motor functions to move the electrophotographic member in a predetermi... | 12/11/1984 |
| 4465357 | Drive system for a photocopier A central drive system for a nonmechanical printing or copying device such as a photocopier has a central drive system with one motor which is subdivided into a main drive system with high precision for driving elements requiring a high degree of synchron... | 08/14/1984 |
| 4449809 | Drive unit mounting mechanism for reproducing apparatus A drive unit mounting mechanism in a reproducing apparatus having a machine frame, a drive unit provided at one side of the machine frame and a driven member provided at the other side of the machine frame, in which when a drive shaft projected from the d... | 05/22/1984 |
| 4390264 | Electrostatic copying apparatus An electrostatic copying apparatus of the type in which an original to be copied is scanned and exposed to light by moving one of an original-support having a transparent plate for placing the original thereon and an optical system relative to the other, ... | 06/28/1983 |
| 4320954 | Drive mechanism for an image transfer type copying apparatus The invention disclosed relates to a drive mechanism for an image transfer type copying apparatus which comprises first and second drive sources independent of one another. The first drive source is for driving photosensitive member and scanning movement ... | 03/23/1982 |
| 4172653 | Actuator for a copy sheet feeder in a reciprocating carriage drive system An electrophotocopy machine has a web of copy paper that is stored on a supply reel in the machine. A pair of initial feed rollers draws the web off the supply reel and feeds the web past a knife that cuts the web into copy sheets of suitable length. The ... | 10/30/1979 |
| 4161359 | Apparatus for synchronizing movement between an optical scanning system and an imaging member A scanning optical system for a photocopier is mounted on a reciprocating carriage which travels between a start-of-scan and end-of-scan position. The carriage is engaged and driven by a drive transmission member which, in a preferred embodiment, is an en... | 07/17/1979 |
| 4158886 | Operator console for a reproduction machine An operator console for a reproduction machine, with the console including a fixed number of input selection devices, e.g. pushbuttons, for initiating machine activity. The activation of the machine components is preferably controlled by a digital compute... | 06/19/1979 |
| 4141646 | Electrophotography apparatus with downtime control circuitry In an image formation apparatus having a developer for developing a latent image on a recording medium by the use of a liquid developer, there is provided a system for determining the length of the downtime by the concentration of the developing liquid af... | 02/27/1979 |
| 4136941 | Electrophotographic copying machine An electrophotographic copying machine comprises a photoconductive drum rotatably disposed in the electrophotographic copying machine body, an original holder movable beyond one of the sides of the electrophotographic copying machine, a receptacle for rec... | 01/30/1979 |
| 4124288 | Scanning mechanism for an electrostatic copier In a document copier in which forward and reverse travel of a scanning member, preferably a document-carrying carriage moving past a stationary scanning source, is driven in a forward direction by a first drive chain, and entrained for movement in a rever... | 11/07/1978 |
| 4023897 | Optics drive mechanism A copier having a stationary document glass and a scanning illumination/optics mechanism. The illumination/optics mechanism reciprocates through a linear scan motion and a reverse-direction reset motion during a copy process cycle. A moving photoconductor... | 05/17/1977 |
