摘要:
A sheet guide position sensor which determines the dimensions of a stack of sheets (54) in a tray (100) having adjustable sheet guides (102). An optical sensor (110) is arranged so that movement of a sheet guide (102) causes a variably graduated scale (104) to be moved past the sensor (110). The sensor (110) may either be a transmissive or reflective type analog sensor in which the strength of the signal generated by the sensor is converted into a position of the sheet guides. A recalibration process is used to prevent contamination of the scale from causing the size determinations by the sensor to be inaccurate. In one embodiment, a digital sensor in cooperation with a digital bar code (Fig.5) or other digital scale can be utilized to determine the variable sheet size, since the digital sensor is insensitive to contamination by dirt or paper particles, etc. In another embodiment, a wiper member (140; Fig.4) is used to clean the variably graduated scales (104).
摘要:
An apparatus for line-to-line recording of different color component images. Four separate xerographic type processing units (111, 112, 113, 114), one for each of the primary colors plus black, are arranged in close nested relationship to one another with image transfer stations (68, 69, 70, 71) in close succession along the path of movement of the copy sheets (12). A combination air flotation type (35) and vacuum based belt transport system (55) is used to move the copy sheets (12) from supply tray (27) successively past the processing units. Exposure is simultaneous. A precise. dimensional relationship between the length (L) and spacing (D) of each photoreceptor belt (110) assures registration of the color images with one another. The length of each photoreceptor belt (110) is the same. Vacuum tensioning means (122) provides the preset dimensional relationship (L, D) between each photoreceptor belt (110). Plural flying spot beams (261', 262', 263', 264') derived from laser (222) provide simultaneous exposure of each photoreceptor belt.
摘要:
An apparatus for line-to-line recording of different color component images. Four separate xerographic type processing units (111, 112, 113, 114), one for each of the primary colors plus black, are arranged in close nested relationship to one another with image transfer stations (68, 69, 70, 71) in close succession along the path of movement of the copy sheets (12). A combination air flotation type (35) and vacuum based belt transport system (55) is used to move the copy sheets (12) from supply tray (27) successively past the processing units. Exposure is simultaneous. A precise. dimensional relationship between the length (L) and spacing (D) of each photoreceptor belt (110) assures registration of the color images with one another. The length of each photoreceptor belt (110) is the same. Vacuum tensioning means (122) provides the preset dimensional relationship (L, D) between each photoreceptor belt (110). Plural flying spot beams (261', 262', 263', 264') derived from laser (222) provide simultaneous exposure of each photoreceptor belt.
摘要:
An apparatus for displaying a plurality of two dimensional display regions (28, 29, 30, 31) including a currently displayed display region on a surface of a display (24), including display means (14) for displaying a pointer (50) on the display (24) at a location corresponding to X and Y coordinate signals generated by pointing means (10) and storing means (20) for storing the plurality of two dimensional display regions (28, 29, 30, 31 ), characterised in that said pointing means (10, 12) further includes means (12)for generating a Z increment signal; sequencing means (18) for determining a sequence of the plurality of two dimensional display regions (28, 29, 30, 31), said sequence including a first display region, a last display region, and intervening display regions, the currently displayed display region being one of said first, last, and intervening display regions, and said sequence having an associated forward direction beginning with said first display region and ending with said last display region and an associated reverse direction beginning with said last display region and ending with said first display region; selecting means (16) for selecting in response to said Z increment signal a display region succeeding the currently displayed display region in said forward direction of said sequence, a display region preceding the currently displayed display region in said reverse direction of said sequence, or the currently displayed display region and further display means (22) for displaying the plurality of two dimensional display regions on the display in accordance with said sequence such that said selected display region appears as a new currently displayed display region, and display regions succeeding said selected display region in said forward direction of said sequence appear overlapped by said selected display region in a third dimension normal to the surface of the display with each of said displayed display regions being displayed in its entirety except where overlapped by a preceding display region in said reverse direction of said sequence, said selected display region being displayed in its entirety.
摘要:
A binary ink drop printer is disclosed of the type wherein continuously generated drops are electrostatically deflected to intersect either a target or a gutter. The printer includes M x N number of nozzles (16. 17) for generating drops and a like number of charging electrodes (3, 4) for charging drops to either a print level for flight to the target (10) or a gutter level for flight to a gutter (8, 9). A M x N matrix is used to couple voltages to the charging electrodes and thereby greatly reduce the number of electrical connections to a substrate carrying the M x N number of charging electrodes. Each charging electrode includes two sections. Application of a print voltage to both sections causes the generation of a print drop that goes to the target and application of a gutter voltage to either or both sections of the charging electrode causes the generation of a gutter drop that is collected in the gutter. One two section electrode is made using at least two partial cylinders. Another two section electrode is made by coupling a single electrode to a voltage divider network.