Eastman-kodak Company

Walter B Sherwood

Dinesh Tyagi

Allen J Rushing

Alan Earl Rapkin

Borden H Mills

Louise Granica

Catherine D Newell

Andrew J Mauer

Daniel T Meyerhoefer

Donald J Clar, Jr

In a multi-printer system with two marking engines, the jobs printed are monitored and the remaining lives of consumables in replaceable units (RUs) in the engines are estimated. A decision unit responsive to the estimated lives of the consumables determines that the first RU in the first marking engine should be moved to the second marking engine at a selected service time, so that a remaining amount of the consumable in the first RU is not discarded.

Effectively using a consumable in two printers

Images produced by electrophotography are often subjected to harsh conditions, such as high temperature and high relative humidity conditions. Prints when subjected to face-to-face stacking under these conditions tend to stick and are difficult to separate without damage. Ethylene-bis-stearamide is incorporated in a protective toner formulation employing a toner binder having a higher glass transition temperature than that of the conventional CYMK colored image toners employed to provide a protective layer in fused images. Further, ethylene-bis-stearamide does not interfere with typical oil release additives used in fuser rollers. By combining ethylene-bis-stearamide with polyalkane waxes having a weight average molecular weight of equal to or greater than 2000 and a poly dispersity of less than 2.0, addition protection can be realized.

Toner composition for preventing image blocking

Film cassette with film exposure status indicia

An image-forming apparatus is adapted to make duplex copies with a separate pass through the fuser for each side. To prevent fusing oil from contaminating an image member by passage from a first image side of a duplex copy to a transfer drum and, hence, to the image member, an oiling algorithm to prevent or lessen oiling during fusing of the first side of duplex copies is provided. Preferably, the apparatus has a finite duplex return path which can hold a limited number of receiving sheets, which number is small enough that offset does not occur while doing first side-duplex fusing.

Toner fuser having an offset preventing liquid applying means and

Each region of a photoconductive member receives an electrostatic charge over a predetermined time period. An electrostatic latent half-tone pattern image is screened on the photoconductive member such that exposure of the photoconductive member to a light pattern of a continuous tone original document will form a half-tone latent image on the photoconductive member. The screened image is formed during the predetermined time period that each region of the photoconductive member is being charged such that the half-tone pattern is partially charged over.

Electrostatographic machine with screening

Growing community of inventors

Rochester, NY, United States of America

Walter B Sherwood