Browse Prior Art Database

2600 INTEGRATED ROS

IP.com Disclosure Number: IPCOM000024537D
Original Publication Date: 1980-Dec-31
Included in the Prior Art Database: 2004-Apr-02
Document File: 2 page(s) / 62K

Publishing Venue

Xerox Disclosure Journal

Abstract

A copier/printer having two modes of operation. In the first mode, a document supported on a platen is optically scanned and an image of the document is projected onto a photoreceptor surface. In the second mode of operation, a helium-neon laser scanner is modulated by electronically stored images. The laser scans by means of a galvanometer the stored image onto an alloy 10 red sensitive photoreceptor surface. The laser operates in the portrait orientation at 240 scans per inch. A smaller than normal (less than 1/240 inch). spot is used with a 60 degree angle of incidence to the photoreceptor surf ace to improve horizontal resolution. The beam is aimed through an optical butterfly slit to minimize existing machine modifications. The horizontal resolution is approximately the same as the vertical resolution but horizontal addressing may be increased to 480-1000 points per inch to improve print quality.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 87% of the total text.

Page 1 of 2

2600 INTEGRATED ROS Proposed Anonymous Classification .

U.S. CI. 355/3R . Int. CI. C03g 15/00

A copier/printer having two modes of operation. In the first mode, a document supported on a platen is optically scanned and an image of the document is projected onto a photoreceptor surface.

In the second mode of operation, a helium-neon laser scanner is modulated by electronically stored images. The laser scans by means of a galvanometer the stored image onto an alloy 10 red sensitive photoreceptor surface. The laser operates in the portrait orientation at 240 scans per inch. A smaller than normal (less than 1/240 inch). spot is used with a 60 degree angle of incidence to the photoreceptor surf ace to improve horizontal resolution. The beam is aimed through an optical butterfly slit to minimize existing machine modifications. The horizontal resolution is approximately the same as the vertical resolution but horizontal addressing may be increased to 480-1000 points per inch to improve print quality.

The mode selection to operate as a normal copier or as a laser printer is accomplished by changing the copy sheet orientation from the landscape to the portrait mode. That is, insertion of a copy paper tray having a configuration for portrait reproduction converts the machine to the laser scanning mode. On the other hand, insertion of a paper tray having a configuration for landscape reproduction converts the machine to the normal copier mode. Thus, the paper trays are "cod...