Electronic thermostat
    1.
    发明授权
    Electronic thermostat 失效
    电子温度计

    公开(公告)号:US3581062A

    公开(公告)日:1971-05-25

    申请号:US3581062D

    申请日:1969-02-18

    Applicant: PAVELLE CORP

    Inventor: ASTON KEITH

    CPC classification number: G05D23/24 G05D23/1909 G05D23/303

    Abstract: A compact, unitary electronic thermostat is formed by encapsulating a temperature sensing element and a solid-state control circuit in a potting compound having good heat transfer characteristics. The unitary thermostat, which includes a solidstate electronic switch having conductive and nonconductive states which are varied in response to the output from the temperature sensing element to control a load power supply may be completely or partially immersed in a fluid environment.

    Method and apparatus for photographic color printing
    3.
    发明授权
    Method and apparatus for photographic color printing 失效
    摄影彩色打印的方法和装置

    公开(公告)号:US3640618A

    公开(公告)日:1972-02-08

    申请号:US3640618D

    申请日:1969-03-10

    Applicant: PAVELLE CORP

    Inventor: ASTON KEITH

    CPC classification number: G03B27/735 G03B27/72 G03B27/73

    Abstract: Apparatus for printing a photographic color print from a color transparency or negative includes a compound color filter consisting of two additive color filters to provide a device having the speed of operation of a conventional subtractive printer apparatus when printing color negatives of good color balance. The apparatus automatically introduces the accuracy of an additive printer system when unbalanced color negatives are being printed.

    Abstract translation: 用于从彩色透明或负色印刷照相彩色印刷品的装置包括由两个添加滤色片组成的复合滤色片,以便在印刷良好色彩平衡的彩色底片时提供具有常规减色打印机装置的操作速度的装置。 当印刷不平衡的彩色底片时,该装置自动引入添加剂打印机系统的精度。

    Photographic processing apparatus

    公开(公告)号:US3595158A

    公开(公告)日:1971-07-27

    申请号:US3595158D

    申请日:1965-03-08

    Applicant: PAVELLE CORP

    CPC classification number: G03D13/046 G03D13/043

    Abstract: A photographic processor formed by an outer chamber with an inner chamber supported therein having walls which are spaced from the walls of the outer chamber. A cap seals both the inner and outer chambers and contains an opening through which liquid may be introduced into the inner chamber when the processor is upright. Openings are provided in the inner chamber adjacent the cap so that processing liquid may flow therethrough into the outer chamber when the processor is held horizontally and a liquid may subsequently flow therethrough and out through the opening in the cap when the processor is inverted.

    Light-monitoring device for use with color photographic apparatus
    7.
    发明授权
    Light-monitoring device for use with color photographic apparatus 失效
    用于彩色摄影装置的光监控装置

    公开(公告)号:US3647296A

    公开(公告)日:1972-03-07

    申请号:US3647296D

    申请日:1970-03-09

    Applicant: PAVELLE CORP

    CPC classification number: G03B27/73

    Abstract: Light-monitoring apparatus is disclosed for use with a color printing process in which the mean printing conditions are determined and applied to all prints. Three photoelectric transducers responsive to the primary colors are arranged to receive light from the source, after filtering, with such light being screened from the photosensitive material on which the prints are formed. The exposure times for the process are then determined by the average intensity of the light impinging upon the photocells. The photocells may also be partially responsive to light passing through the negative or transparency to correct partially for density and/or color changes from transparency to transparency.

    Abstract translation: 公开了用于彩色打印处理的光监视装置,其中确定了平均打印条件并将其应用于所有打印。 响应于原色的三个光电传感器被布置成在滤光之后接收来自光源的光,这些光被从其上形成有印刷物的感光材料上筛选。 然后,通过照射到光电池上的光的平均强度来确定该过程的曝光时间。 光电池还可以部分地响应于通过负极或透明体的光,以部分地校正从透明度到透明度的密度和/或颜色变化。

    Method of making a color photographic print from a color transparency or the like
    8.
    发明授权
    Method of making a color photographic print from a color transparency or the like 失效
    从彩色透明度或类似方式制作彩色摄影打印的方法

    公开(公告)号:US3615425A

    公开(公告)日:1971-10-26

    申请号:US3615425D

    申请日:1968-11-21

    Applicant: PAVELLE CORP

    Inventor: ASTON KEITH

    CPC classification number: G03B27/73

    Abstract: The present invention involves a system for balancing the colors used in making colored photographic prints where the speed of the printing material is substantially greater for one color than for another. According to the invention a portion of the beam for printing the most rapid color components is reduced by suitable masking or filtering and exposure of the beam of that color component is automatically terminated. The color components of the entire illuminating beam are mixed so that exposure is made from the single mixed beam.

    Apparatus for automatically processing and drying photographic film and paper
    10.
    发明授权
    Apparatus for automatically processing and drying photographic film and paper 失效
    自动加工和干燥摄影胶片和纸张的设备

    公开(公告)号:US3626831A

    公开(公告)日:1971-12-14

    申请号:US3626831D

    申请日:1967-09-26

    Applicant: PAVELLE CORP

    CPC classification number: G03D3/10

    Abstract: An automatic apparatus in which photographic films can be developed and dried in batches of several strips suspended from a rod which includes an automatic mechanism for sequentially lowering and raising each rod of films into and out of a series of baths. The film is moved into, held for a timed interval in, and moved out of each bath in the same vertical plane and moved horizontally to the next bath only while lifted completely out of the bath.

Patent Agency Ranking