Browse Prior Art Database

RECORDING DEVICE

IP.com Disclosure Number: IPCOM000025333D
Original Publication Date: 1984-Oct-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 4 page(s) / 119K

Publishing Venue

Xerox Disclosure Journal

Abstract

A laser beam recording device 2 is shown in schematic side form in Figure 1. An optical scan assembly 4 emits an information-modulated laser beam 5 which is directed toward the surface of photoreceptor drum 6. A control unit 8, packaged separately from assembly 4, contains the electronics for controlling operation of assembly 4, drum 6 and other xerographic functional units which are not shown but Ghich include a charging, development, transfer and cleaning station. All of these units are contained within a housing 10.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

Proposed Classification
U.S. CI. 350/6.1 Int. C1. G02b 27/17

f4 ' F/G 2

RECORDING DEVICE Michael A. Parisi Earl V. Jackson Thomas J. Kessler

1

CONTROL

UNIT -

b

Volume 9 Number 5 September/October 1984 313

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Page 2 of 4

RECORDING DEVICE (Cont'd)

A laser beam recording device 2 is shown in schematic side form in Figure 1. An optical scan assembly 4 emits an information-modulated laser beam 5 which is directed toward the surface of photoreceptor drum 6. A control unit 8, packaged separately from assembly 4, contains the electronics for controlling operation of assembly 4, drum 6 and other xerographic functional units which are not shown but Ghich include a charging, development, transfer and cleaning station. All of these units are contained within a housing 10.

Scanning assembly 4, shown in a top view in Figure 2, contains a laser diode assembly 12, collection optics assembly 14 and a folding and optical correction system 16. Assembly 4, as shown in Figure 1, is precisely located in relation to drum 6 by a snap-in, three point mounting arrangement fixedly attached to the housing interior. The front of assembly 4 is secured against a fixed V-plate 20 via

I2

locating pin 22. A second mounting point is shown at fixed corner 24 where rubber shock mount 26 provides vertical vibration isolation at the more massive rear portion of assembly 4, while seating assembly 4 firmly into V-plate 20. A third mounting point (not visible) is on the far side of assembly 4 and is similar in function to the 24-26 arrangement. This three point mounting arrangement provides accurate location of assembly 4 relative to drum 6 and further maintains a vibration-f ree mounting.

Referring again to Figures 1 and 2, a modulated recording beam is generated by diode 30 in response to signals from control unit 8. The beam is conditioned by collector optics assembly 14, folded by a plurality of mirrors and passes a first time through cylinder lenses 32. The beam...