Abstract: Apparatus is disclosed for placing a contact print slide (134) in a photographic printer (10) having a platen (54) for supporting a photographic paper (32) during exposure of an image (88, 90) onto the paper at a paper print gate (36) at the platen.

Abstract: Apparatus is disclosed for placing a contact print slide (134) in a photographic printer (10) having a platen (54) for supporting a photographic paper (32) during exposure of an image (88, 90) onto the paper at a paper print gate (36) at the platen.

Abstract: The present invention relates to a cutting apparatus which includes a cutter. A pair of sensors is used to detect a lead edge of an image located on a receiver sheet. In response to the sensors the cutter and the lead edge of the image are aligned. The receiving sheet is transported in a direction essentially perpendicular to the cutter. The cutter cuts the receiving sheet adjacent and parallel to the lead and trail edges of the image. A cut lead edge of the receiving sheet is edge registered. A third sensor detects edges of the image perpendicular to the cut lead edge of the image. A second cutter, responsive to the third sensor, cuts the receiving sheet adjacent edges of the image perpendicular to the cut lead edge of the image.

Abstract: A radio receiver and its power supply are included in a circuit with a switch which is responsive to introduction of a force field, such as a magnetic field. When the field is activated, as by the introduction of a sufficiently powerful magnet, the switch is opened and the radio receiver is deactivated. Removal of the force field automatically restores the radio receiver to operable condition.

Abstract: A laser beam generating module is disposed at or near the butt end of a handgun in substantial alignment with the gun barrel. The module may optionally include means for activating the laser which are responsive to the horizontal or vertical attitude of the handgun, means for adjusting the aiming module for accuracy at various ranges, and means for suppressing the laser beam until the user of the handgun is ready to use it. A version of the invention places the laser module at the end of a magazine insertable into the handgrip of an automatic handgun so that the laser module is carried just adjacent the butt end of the handgun. Placement of the laser module at the butt end of the weapon yields accuracy adequate for routine police work, does not upset the balance and feel of the weapon, and it enables the weapon to be carried by its user in its conventional holster.

Abstract: Restraint apparatus for prisoners is worn beneath ordinary clothing so as to be unseen by the general public, in order that the prisoner's presumption of innocence not be denigrated by public display as is the case with manacles or the like. The apparatus operates by remote activation of an effective but nonlethal impact, such as a brief electrical interference with the somatic nervous system, or discharge of a small dose of tear gas or mace into the prisoner's breathing space.

Abstract: A reproduction apparatus includes a mechanism for transporting a web carrying electrostatically held toner images through an endless path. The web includes a plurality of closely spaced perforations along an edge. A transfer device includes a drum for presenting a receiving surface to the web to receive a plurality of images in registery, for example, color separation images that will make up a multicolor image on the receiving surface. The transfer drum is driven through a gear train by a sprocket which engages the perforations. The sprocket may also drive the web. To assure the most accurate registry despite inaccuracies in the gear train or perforation location, the pitch of the images on the web divided by the circumference of the sprocket is an integer, preferably 1 and preferably, the circumference of the sprocket divided by the circumference of each of the gears in the gear train is an integer.

Abstract: A transfer roller apparatus for use for example in an electrographic copier including a dielectric member adapted to carry electrostatically developed marking particle images. The transfer roller apparatus employs a locating and tacking mechanism of simple construction which is capable of accurately locating a receiver member on the periphery of the transfer roller without damaging the dielectric member of the copier. Such apparatus includes a cylindrical roller to which an electrical bias is applied to establish a transfer field between the roller and the dielectric member to effect transfer of marking particle images from the dielectric member to a receiver member accurately located on the peripheral surface of the roller. A flexible member having a receiver member locating feature is associated with the roller.

Abstract: A transfer roller apparatus for use for example in an electrographic copier including a dielectric member adapted to carry electrostatically developed marking particle images, and the mechanism for applying an electrical bias thereto. The transfer roller apparatus, employing a mechanism for accurately locating a receiver member on the periphery of the roller, dielectric member of the copier. Such apparatus includes a conductive core, mounted for rotation about its longitudinal axis and located such that its peripheral surface is in operative relation with the dielectric member. An electrical bias is applied to the roller to establish a transfer field between the roller and the dielectric member to effect transfer of marking particle images from the dielectric member to a receiver member accurately located on the peripheral surface of the roller. The bias is applied by connecting an electrical potential source to the roller through the conductive core.

Abstract: A transfer roller apparatus for use for example in an electrographic copier including a dielectric member adapted to carry electrostatically developed marking particle images on successive image receiving areas. The transfer roller apparatus, is driven to synchronize transfer roller rotation with dielectric member movement for accurate transfer of marking particle images to a receiver member on such roller peripheral surface. The roller transfer apparatus includes a gear train having a first gear coupled to a rotational motive source and a last gear coaxially coupled to the transfer roller. The transfer roller is articulatable to a first position in operative relation with the dielectric member, a second position in operative relation with a cleaning mechanism for the peripheral surface of the roller, and a third rest position intermdiate the first and second positions.