Abstract:
A digital imaging system and method for searching for expressions that appear on a microform medium, the system having a computer including a processor and an input device, and a digital microform imaging apparatus having an area sensor generating a digital microform image of the microform medium. The computer is configured to receive a search expression from the input device, create an expression template representing a shape of the search expression, and search the digital microform image for instances of the expression template.
Abstract:
A microform imaging apparatus comprising a chassis including a microform media support structure configured to support a microform media within a plane substantially orthogonal to a first optical axis, a fold mirror supported along the first optical axis to reflect light along a second optical axis that is angled with respect to the first optical axis, a lens supported along one of the first and second optical axis, an area sensor supported along the second optical axis, a first adjuster for moving the area sensor along at least a portion of the second optical axis and a second adjuster for moving the lens along at least a portion of the one of the first and second optical axis.
Abstract:
A microfilm viewer/printer projection system particularly adapted for full plane plain paper copying has a first, a second and a third mirror which selectively project a document image from a horizontal object plane to a vertical viewing plane or a horizontal exposure plane. In the view mode, the first and second mirrors reflect the document image to a screen which defines the viewing plane. An AC motor movement drives the first and second mirrors to a print mode, in which the second mirror is parked in a parking zone which is enveloped by the projection path from the object plane to the exposure plane, which is defined by a belt type photoreceptor. In the print mode, the first mirror reflects the entire document image to the third mirror, which is a black mirror, and the third mirror reflects the entire document image to the photoreceptor, to expose the photoreceptor to the entire document image simultaneously.
Abstract:
An electrophotographic copier includes a transfer/charge section, a developer/cleaner section, and a photoreceptor having a surface with first and second image areas. Copies are produced by moving the photoreceptor a half revolution so that the first image area passes through the transfer/charge section in which a uniform charge is applied to the first image area. The charged first image area is exposed to a light image producing an electrostatic image on a surface of the photoreceptor. Toner is applied to the exposed first image area as it passes through the developer/cleaner section. The toned image is transferred to paper by moving the first image area through the transfer/charge section, after which the toner is fused onto the paper. When an another copy is to be made, the second image area passes through the transfer/charge section to apply a uniform charge to that image area while the developer/cleaner section removes residual toner from the first image area. Then the second image area is used to produce the next copy. Otherwise the transfer/charge section is not activated and only the residual toner is removed from the first image area before the copying process ends.
Abstract:
A computer implemented method of viewing a microform segment which has been imaged by a digital microform imaging apparatus connected to a computer. The digital microform imaging apparatus images the microform segment and provides a corresponding image data of the microform segment to the computer. The method comprises the steps of: displaying the image data of the microform segment on a display connected to the computer using a computer user interface having a display area; and creating a magnification window within the computer user interface.
Abstract:
An electrostatic image developer dispenser forms a uniformly thick and uniformly charged layer of developer particles on a transport surface of a conveyor for delivering particles from a reservoir to a development region adjacent to a photoreceptor. A magnet bar assembly inside the tubular conveyor attracts particles to the transport surface for conveyance to the development region. A magnetic doctor blade presents a surface parallel to the transport surface to establish a regulating gap between the doctor blade surface and the transport surface. The doctor blade extends in the transport direction from opposite one pole of the magnet bar assembly toward an opposite pole downstream from the one pole, to concentrate and orient the magnetic field in the particle layer formation area. In one embodiment, the magnet bar assembly has a pole plate opposite from the doctor blade surface and angularly offset therefrom in a direction opposite to the transport direction. In another embodiment, the magnet bar assembly has two pairs of opposed magnets. A scraper blade bears against the transport surface to remove developer particles from the transport surface after they have passed through the development region. A cleaning blade is provided in the dispenser that bears against the photoreceptor to remove developer particles therefrom upstream from the development region and recycle the removed particles back into the reservoir.
Abstract:
A digital imaging system for real-time searching for expressions that appear on a microform medium, the system comprising a computer including a processor, a display, a temporary memory, and a non-volatile memory, and a digital microform imaging apparatus including a controller and an area sensor generating a real-time digital microform image of the microform medium. The controller is in communication with the area sensor and receives the image. The controller is in communication with the processor and outputs the image to the processor that temporarily stores the image in the temporary memory. The processor uses the image output by the controller to drive the display with the image being generated by the area sensor in real-time. The processor searches the image used to drive the display for instances of a search expression, the processor visually distinguishing identified instances of the search expression on the display.
Abstract:
A digital imaging system for real-time searching for expressions that appear on a microform medium, the system comprising a computer including a processor, a display, a temporary memory, and a non-volatile memory, and a digital microform imaging apparatus including a controller and an area sensor generating a real-time digital microform image of the microform medium. The controller is in communication with the area sensor and receives the image. The controller is in communication with the processor and outputs the image to the processor that temporarily stores the image in the temporary memory. The processor uses the image output by the controller to drive the display with the image being generated by the area sensor in real-time. The processor searches the image used to drive the display for instances of a search expression, the processor visually distinguishing identified instances of the search expression on the display.
Abstract:
A digital microform imaging apparatus, comprising a chassis, a fold mirror supported by the chassis and including a reflecting surface for directing light from a first substantially vertical optical axis to a second substantially horizontal optical axis, a microform media support structure supported at a location intersected by the first optical axis, a first carriage supported for movement along a trajectory that is substantially parallel to the second optical axis, an area sensor supported for movement along the second optical axis, the area sensor further supported by the first carriage for rotation about an axis parallel to the second optical axis and a lens supported for movement along the second optical axis, the lens positioned between the area sensor and the fold mirror, a first motor mounted to the first carriage and linked to the area sensor for rotating the area sensor between at least two positions for obtaining portrait and landscape images of a microform media.