Edward Stinson Mayer

US Patent:

43741924, Feb 15, 1983

Filed:

Feb 25, 1982

Appl. No.:

6/352352

Inventors:

Edward F. Mayer - San Jose CA
Arthur S. Diamond - Ventura CA
Paul Chang - Hanover Park IL

Assignee:

Ricoh Company, Ltd. - Tokyo

International Classification:

G03G 910
B32B 2502
B32B 2740

US Classification:

430108

Abstract:

Electrophotographic developer compositions containing carrier, toner and special purpose additives such as flow promoters, dry lubricants and the like are prepared by coating carrier particles with a coating selected so that the triboelectric relationship between the surface of the carrier and the surface of the additive is substantially zero.

US Patent:

45538271, Nov 19, 1985

Filed:

Jun 30, 1983

Appl. No.:

6/510073

Inventors:

Edward F. Mayer - San Jose CA

Assignee:

Ricoh Company, Ltd. - Tokyo

International Classification:

G03G 1508

US Classification:

355 3DD

Abstract:

An assembly for developing a latent electrostatic image formed on the photosensitive outer surface of a rotating developing drum making up a part of an electrophotographic copying apparatus is disclosed herein. This assembly includes a supply of developer contained within a housing adjacent the drum, a primary magnetic brush within the housing for continuously moving fresh developer in close proximity with the drums photosensitive outer surface, and an arrangement including a series of rollers acting on the developer leaving the primary brush for enhancing the developing process.

US Patent:

44277563, Jan 24, 1984

Filed:

Apr 15, 1982

Appl. No.:

6/368633

Inventors:

Edward F. Mayer - San Jose CA
Donald F. Pfeuffer - San Jose CA

Assignee:

Ricoh Company, Ltd.

International Classification:

G03G 1308
G03G 1309

US Classification:

430121

Abstract:

A crossmixing method for ensuring adequate mixing of a developer in an electrostatic printing machine. The method utilizes a screw conveyor having a left-hand thread on one portion thereof and a right-hand thread on another portion thereof, to move developer material from the end of the screw conveyor toward the middle thereof. Material is discharged from the screw conveyor into the sump of the machine in a direction generally toward the opposite end of the screw conveyor from where it originated. Developer material is moved from the sump upwardly onto a plate assembly which includes angled separators for guiding the developer particles and shifting them in opposite lengthwise senses on opposite halves of the plate assembly. From the plate assembly, the developer material moves in a curtain downwardly into the sump.

US Patent:

43847846, May 24, 1983

Filed:

Oct 20, 1980

Appl. No.:

6/199096

Inventors:

Edward F. Mayer - San Jose CA

Assignee:

Ricoh Company, Ltd. - Tokyo

International Classification:

G03G 1500
G03B 2734
G03G 1528

US Classification:

355 8

Abstract:

An electrophotographic copying apparatus includes a photosensitive surface capable of retaining an electrostatic latent image for at least two cycles of the surface so a first copy of an original can be made upon scanning the original and the latent image can be recycled to produce a second copy of the same original during the return of the scanning mechanism. The apparatus includes an improved mechanism for driving the scanning mechanism, as well as improved developing and transfer stations. The improved scanning mechanism includes a movable carriage having a vertical slotway. A pin is held within the slotway and driven by a flexible cable to travel in an endless path to move the carriage back and forth beneath the original. The carriage may include a second slotway for holding a second pin driven by a flexible cable arranged in an endless path extending a distance longer than the first mentioned path. Either of these pins may be engaged to its slotway to vary the length of travel of the carriage.

US Patent:

43611095, Nov 30, 1982

Filed:

Feb 12, 1980

Appl. No.:

6/120907

Inventors:

Edward F. Mayer - San Jose CA
Donald F. Pfeuffer - San Jose CA

Assignee:

Ricoh Company, Ltd. - Tokyo

International Classification:

G03G 1509

US Classification:

118655

Abstract:

A crossmixing device for ensuring adequate mixing of a developer in an electrostatic printing machine. A screw conveyor is utilized having a left-hand thread on one portion thereof and a right-hand thread on another portion thereof, to move developer material from the end of the screw conveyor toward the middle thereof. Material is discharged from the screw conveyor into the sump of the machine in a direction generally toward the opposite end of the screw conveyor from where it originated. Developer material is moved from the sump upwardly onto a plate assembly which includes angled separators for guiding the developer particles and shifting them in opposite lengthwise senses on opposite halves of the plate assembly. From the plate assembly, the developer material moves in a curtain downwardly into the sump.

US Patent:

43317561, May 25, 1982

Filed:

Nov 4, 1980

Appl. No.:

6/203881

Inventors:

Edward F. Mayer - San Jose CA
Arthur S. Diamond - Ventura CA
Paul Chang - Hanover Park IL

Assignee:

Ricoh Company, Ltd. - Tokyo

International Classification:

G03G 910

US Classification:

430108

Abstract:

Electrophotographic developer compositions containing carrier, toner and special purpose additives such as flow promoters, dry lubricants and the like are prepared by coating carrier particles with a coating selected so that the triboelectric relationship between the surface of the carrier and the surface of the additive is substantially zero.

US Patent:

46143530, Sep 30, 1986

Filed:

May 23, 1985

Appl. No.:

6/737325

Inventors:

Edward F. Mayer - San Jose CA

Assignee:

Forems, Inc. - Novelty OH

International Classification:

B60D 114

US Classification:

280406A

Abstract:

A storage assembly for trailer hitch torsion bars mounted on the trailer tongue having a pocket for receiving the greased tip of the torsion bar and a bracket for supporting the bar in the pocket.

US Patent:

45595097, Dec 17, 1985

Filed:

Sep 2, 1983

Appl. No.:

6/529082

Inventors:

Edward F. Mayer - San Jose CA

Assignee:

Ricoh Company Ltd. - Tokyo

International Classification:

G03G 1516

US Classification:

355 3TR

Abstract:

There is disclosed herein an electrophotographic copying apparatus and its method of operation in which electrically charged toner of one polarity is transferred from an oppositely charged electrostatic image on the outer surface of its photoconductive drum to the front side of a blank sheet for transforming the latter into an intended copy as the back side of the blank sheet engages the outer surface of a transfer roll positioned adjacent the drum. In accordance with one feature of this apparatus, both the front side of the blank sheet, before it receives toner, and the outer surface of the transfer roll are biased such that each carries the same charge as the drum surface and such that the combined voltage level of both is greater than the voltage level of the electrostatic image. In accordance with another feature, the biasing means is designed for changing this combined voltage level in a way which improves the transferring capability of the apparatus, especially when more than one copy is made from a single electrostatic image.