摘要:
In combination with apparatus for printing indicia on a sheet, and a microcomputer for controlling the indicia printing apparatus to cause the indicia to be printed a predetermined marginal distance from an edge of the sheet, there is provided an improvement for changing the marginal distance. The improvement comprises: operator-controlled apparatus for providing at least one signal representative of at least one increment of distance; and programming the microcomputer for processing the at least one signal to provide a changed marginal distance, wherein the changed marginal distance includes the predetermined distance changed by the at least one increment of distance.
摘要:
An improvement in combination with a postage meter including a rotary drum having a periphery adapted for feeding a sheet in a path of travel. The improvement comprises: a first device for sensing a time interval during which a sheet is linearly displaced a predetermined distance in the path of travel; a d.c. motor coupled to the drum for rotation of the drum; a second device for sensing angular displacement of the drum; and a computer coupled to the first and second sensing devices and to the d.c. motor; wherein the computer responds to the first sensing device for providing respective amounts representative of desired angular displacements of the drum during successive sampling time periods, responds to the second sensing device for providing respective amounts representative of actual angular displacements of the drum during successive sampling time periods, compensates for the difference between desired and actual angular displacements and generates a d.c. motor control signal for controlling rotation of the motor to cause the linear displacement of the periphery of the drum to substantially match the linear displacement of the sheet during respective sampling time periods.
摘要:
Apparatus is provided for controlling the velocity of a portion of a load in accordance with a trapazoidal-shaped velocity versus time profile. The apparatus includes a d.c. motor having an output shaft for driving the load; instrumentalities for sensing angular displacement of the motor output shaft; a microprocessor including a clock for generating successive sampling time periods, means for providing first counts respectively representative of successive desired angular displacements of the motor output shaft during successive sampling time periods to cause the load portion to be moved in accordance with a predetermined trapezoidal-shaped velocity versus time profile, means responsive to the sensing means for providing second counts respectively representatiave of actual angular displacements of the motor output shaft during successive sampling time periods, and means for compensating for the difference between the first and second counts during each successive sampling time period and generating a pulse width modulated control signal for controlling the d.c. motor, the motor control signal causing the actual angular displacement of the motor output shaft to substantially match the desired angular displacement of the motor output shaft during successive sampling time periods, whereby the load portion is moved substantially in accordance with the predetermined trapezoidal-shaped velocity versus time profile; and a signal amplifying device for operably coupling the motor control signal to the d.c. motor.
摘要:
An improvement in combination with apparatus including rotary means, wherein the rotary means includes a periphery having indicia printing means and is adapted for feeding a sheet in a path of travel. The improvement comprises: a first device for sensing a time interval during which a sheet having a leading edge is linearly displaced a predetermined distance in the path of travel; a d.c. motor coupled to the rotary mean for rotation of the rotary means; a second device for sensing angular displacement of the rotary means and a computer coupled to the first and second sensing devices and to the d.c. motor; wherein the computer responds to the first sensing device for providing respective amounts representative of desired angular displacements of the rotary means during successive sampling time periods, responds to the second sensing device for providing respective amounts representative of actual angular displacements of the rotary means during successive sampling time periods, compensates for the difference between desired and actual angular displacements and generates a d.c. motor control signal for controlling rotation of the motor to cause the linear displacement of the indicia printing means to initially engage the sheet in the path of travel a predetermined marginal distance from the leading edge of the sheet.
摘要:
In a machine which includes apparatus for feeding tape and for driving the tape feeding apparatus, there is provided an improvement for controlling the tape feeding apparatus. The improvement comprises the driving apparatus is provided with a d.c. motor having an output shaft for driving the tape feeding apparatus, and apparatus is provided for sensing angular displacement of the motor output shaft. In addition there is provided a microcomputer including a microprocessor comprising a clock for generating successive sampling time periods, structure for providing first counts respectively representative of successive desired angular displacements of the motor output shaft during successive sampling time periods, structure responsive to the sensing apparatus for providing second counts respectively representative of actual angular displacements of the motor output shaft during successive sampling time periods, and structure for compensating for the difference between the first and second counts during each successive sampling time period and generating a pulse width modulated control signal for controlling the d.c. motor, the motor control signal causing the actual angular displacement of the motor output shaft to substantially match the desired angular displacement of the motor output shaft during successive sampling time periods. Further, a signal amplifier circuit is provided for operably coupling the motor control signal to the d.c. motor.
摘要:
In printing apparatus including structure for changing a value to be printed and structure for selecting a value to be printed, wherein the former includes a plurality of banks, each of which includes a print wheel having a plurality of print elements, and the latter includes structure for selecting each bank and structure for selecting each print element of a selected bank, and structure for driving the bank and print element selection structure, wherein the driving structure includes an output shaft, and structure for selectively coupling the shaft to the bank and print element selection structure, the improvement for controlling the value selection structure, the improvement comprising: the driving structure including a d.c. motor having the output shaft; structure for sensing angular displacement of the shaft; a microprocessor comprising clock structure for generating successive sampling time periods, structure for providing first counts respectively representative of successive desired angular displacements of the shaft, structure responsive to the sensing structure for providing second counts respectively representative of actual angular displacements of the shaft, and structure for compensating for the difference between the first and second counts during each successive sampling time period and generating a PWM signal causing the actual angular displacement of the shaft to substantially match the desired angular displacement thereof during successive sampling time periods; and signal amplifying structure operably coupling the signal to the motor.
摘要:
Sheet handling apparatus is provided which includes structure for feeding a sheet in a predetermined path of travel, for sensing the sheet in the path of travel and providing at least one sensing signal indicative thereof, for printing postage indicia on the sheet, and for controlling the printing structure. The sensing structure is coupled to the controlling structure, which includes a microcomputer adapted to be energized from a local source of supply of power. The microcomputer is responsive to the at least one sensing signal for providing a time delay before commencement of operation of the printing structure to cause the postage indicia to be printed on the sheet a predetermined marginal distance from a reference edge of the sheet. The controlling structure includes a keyboard coupled to the microcomputer. The keyboard includes at least one key selectively operable for generating at least one key signal representative of a desired change in the marginal distance. The microcomputer is responsive to the key signal for providing an adjusted time delay before commencement of operation of the printing structure to cause the postage indicia to be printed on the sheet a changed marginal distance from the reference edge of the sheet, the changed marginal distance being the predetermined distance by the desired change in marginal distance. And the microcomputer includes a nonvolatile memory for storing therein an amount representative of the desired change in marginal distance.
摘要:
In combination with a postage meter which includes a plurality of loads, a source of supply of motive power for driving the respective loads and instrumentalities for selectively coupling the source of motive power to the respective loads, there is provided an improvement which comprises: the motive power source including a d.c. motor having an output shaft adapted to be selectively coupled to the respective loads; means for sensing angular displacement of the motor output shaft; a microprocessor comprising a clock for generating successive sampling time periods, means for providing first counts respectively representative of successive desired angular displacements of the motor output shaft during successive sampling time periods, means responsive to the sensing means for providing second counts respectively representative of actual angular displacements of the motor output shaft during successive sampling time periods, and means for compensating for the difference between the first and second counts during each successive sampling time period and generating a pulse width modulated control signal for controlling the d.c. motor, the motor control signal causing the actual angular displacement of the motor output shaft to substantially match the desired angular displacement of the motor output shaft during successive sampling time periods; and a signal amplifier circuit for operably coupling the motor control signal to the d.c. motor.
摘要:
An improvement in combination with a postage meter including a rotary postage printing drum having apparatus for changing respective postage values to be printed, and including apparatus for actuating the changing apparatus, there is provided an improvement for indexing the changing apparatus into engagement with the actuating apparatus. The improvement comprises: a d.c. motor coupled to the drum for rotation of the drum; a device for sensing angular displacement of the drum; and a computer coupled to the sensing device and to the d.c. motor; wherein the computer provides respective amounts representative of desired angular displacements of the drum during successive sampling time periods, responds to the sensing device for providing respective amounts representative of actual angular displacements of the drum during successive sampling time periods, compensates for the difference between desired and actual angular displacements and generates a d.c. motor control signal for controlling rotation of the motor to cause the changing apparatus to be indexed into engagement with the actuating apparatus.
摘要:
Systems and methods including mailing machines having postage meters including multiple postal security devices are described. In one illustrative configuration, a postage meter having multiple postal security devices for use with different postal carriers is described. In another illustrative configuration, a postage meter is configured to apply two postage payment information indicia to a single mail piece using two separate postal security devices.