The Mead Corporation

Other

Fisher Data Products, Inc.

David A Boyer

Erik K Nelson

Edward J Saccocio

Michael E Demarchi

Allen Mark Jones

Jack Beery

Joseph G O'Connor

Benjamin C Stone

Vlastimil Frank

James Allen Fisher

James Timothy Dillon

John David Painter

John Llewellyn Crowley

Donald Christopher Leonard

James Hubert Walters

In a module unit in a housing, the module unit is designed to easily slide into and out of the housing. The housing has one or more plenums through which convective air circulates around and through the module unit. A sealing mechanism seals openings that connect the module unit and one or more of the plenums. When the module unit is removed from the housing, a lift mechanism removes the sealing mechanism from the openings, and allows the module unit to be easily removed from the housing. After reinsertion of the module unit, the lift mechanism reinserts the sealing mechanism into the openings.

Airflow sealing mechanism

A circuit detects insulation defects in a coil assembly including a plurality of series connected coils. A first voltage pulse is applied to a first coil of the coil assembly, a second voltage pulse is applied to a second coil of the coil assembly, the first and second coils being substantially diametrically opposite to one another, and the first and second voltage pulses being substantially equal to one another and oppositely poled relative to the coil assembly. A first voltage waveform across the first coil is monitored, and a second voltage waveform across the second coil is monitored. A first signal is derived from the first voltage waveform, a second signal is derived from the second voltage waveform, and a differential percentage value based on the first signal and the second signal is computed. An insulation defect is then determined based upon the differential percentage value.

Simultaneous surge test of two coils of an assembly of series connected

The present invention provides a method of registering to an imaging web moving within an imaging web handling apparatus along an imaging web path. The imaging web comprises a support having a coating of photosensitive microcapsules on the surface thereof. The photosensitive microcapsules have an internal phase of a photosensitive composition and a color former. Exposure of the imaging web to actinic radiation defines an image area and a border area. A registration mark is formed on the web by exposing a portion of the web area to actinic radiation so that the portion undergoes a color or reflection change, or exposing all but a portion of the border area to actinic radiation so that the exposed area undergoes a color or reflection change. The registration mark is detected and in response to detection of the registration mark, an operation is performed on the imaging web.

System for registering to a moving web

The present invention provides an imaging process wherein the pressure application developer means is not contaminated during pressure development. The process involves an imaging web including a support having a layer on the surface thereof of photosensitive microcapsules including an internal phase of a photohardenable photosensitive composition and a color former. The imaging web is image-wise exposed to a first source of actinic radiation to form an image area; this exposure defines a border area in the web comprising the areas of the imaging web surrounding the image area. The image area of the imaging web is contacted with an opaque receiver sheet. The border area is then uniformly exposed to a second source of actinic radiation to harden the microcapsules in the border area. The entire surface of the imaging sheet is then subjected to a uniform rupturing force such that the microcapsules rupture and release the internal phase in accordance with the image-wise exposure to react with the developer material associated with the imaging sheet or the receiver sheet to produce an image.

Imaging process involving hardening of imaging web border area

Methods and apparatus for pressure developing imaging sheets are described. In a three roll embodiment, first and second rolls are journaled into a housing to form a nip for rupturing microcapsules on the surface of an imaging sheet as it is passed through the nip. Such rolls are aligned at a slight skew angle and are resiliently pressed into one another by means of a third roll supported at a skew angle relative to the roll it contacts. In a two roll embodiment, the first and second rolls are crowned and pressed into contact with one another to present a uniform nip. In a four roll embodiment, the first and second rolls are aligned in parallel with each other, while a skewed roll backs up each of the first and second rolls. The backup rolls may alternatively be crowned. In any embodiment, the imaging sheet is directed into the nip to contact one roll at an angle of arc along the roll ahead of the nip. The nip may be defined partially open in the absence of a sheet, and the pressure rolls may be formed from hardened and chrome plated steel.

Pressure development apparatus for imaging sheets employing

Imaging sheets having a coating containing chromogenic material and a photosensitive composition with at least the photosensitive composition encapsulated in rupturable microcapsules as an internal phase are processed by contacting the imaging sheets with a traveling pile formed by magnetically attractable free particles on a magnetic brush to rupture the microcapsules coating the surfaces of the imaging sheets by means of a soft pliable brushing action of the pile against the imaging sheets.

Magnetic brush abrasion development of imaging sheets employing

Growing community of inventors

Miamisburg, OH, United States of America

David A Boyer