# US 11,298,935 B2 · Wash-up blade

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- Number: US 11,298,935 B2
- Document ID: US11298935B2
- Status: Granted
- Kind: B2
- Application number: 17/237,088
- Filed: 2021-04-22
- Published: 2021-10-28
- Granted: 2022-04-12
- Earliest claimed: 2020-04-27
- Applicants: Explorer Pressroom Solutions
- Inventors: Gilbert M. Ashdown; Raymond Dabela
- Web page: https://patentgrep.com/patent/US11298935B2

## CPC

- B41F 35/00: Cleaning arrangements or devices {(in manifolding apparatus or the like B41L41/00)}
- B41F 35/001: {Devices for cleaning parts removed from the printing machines (B41F35/003 takes precedence)}
- B41P 2235/21: Scrapers, e.g. absorbent pads
- B41F: PRINTING MACHINES OR PRESSES (manifolding devices or office printing machines B41L)
- B41P: INDEXING SCHEME RELATING TO PRINTING, LINING MACHINES, TYPEWRITERS, AND TO STAMPS

## Abstract

Provided is an apparatus suitable for use as a printer wash-up blade. Also provided is a method of cleaning a roller on a rotary printing press using the above apparatus.

## Claims

### Claim 1

A substantially rectangular apparatus suitable for use as a printer wash-up blade, the apparatus having a top, a bottom, a first long side and a second long side that are substantially parallel, two short sides that are substantially parallel, and a width, wherein
the short sides are both between 0.75 inches and 3 inches in length; and
the long sides are both between 10 inches and 90 inches in length,
wherein the width along the first long side is between 0.07 inches and 0.15 inches, and the width along the second long side is between 0.015 inches and 0.075 inches; and
wherein the width narrows between the first long side and the second long side such that the angle between the second long side and the bottom is less than 30 degrees.

### Claim 2 (depends on 1)

The apparatus of claim 1, further comprising a plurality of holes through the top and bottom suitable for attaching the apparatus to a printer.

### Claim 3 (depends on 1)

The apparatus of claim 1, wherein the short sides are both between 1 inch and 2.5 inches inclusive.

### Claim 4 (depends on 1)

The apparatus of claim 1, wherein the long sides are both between 12 inches and 80 inches inclusive.

### Claim 5 (depends on 1)

The apparatus of claim 1, wherein the width along the first long side is between 0.078 inches and 0.125 inches inclusive.

### Claim 6 (depends on 1)

The apparatus of claim 1, wherein the width along the second long side is between 0.02 inches and 0.05 inches inclusive.

### Claim 7 (depends on 1)

The apparatus of claim 1, wherein the angle between the second long side and the bottom is between 20 degrees and 2 degrees inclusive.

### Claim 8 (depends on 1)

The apparatus of claim 1, wherein the angle between the second long side and the bottom is between 10 degrees and 3 degrees inclusive.

### Claim 9 (depends on 1)

The apparatus of claim 1, wherein the angle between the second long side and the bottom is between 7 degrees and 4 degrees inclusive.

### Claim 10 (depends on 1)

The apparatus of claim 1, wherein the angle between the second long side and the bottom is about 5 degrees.

### Claim 11 (depends on 1)

The apparatus of claim 1, wherein the entire apparatus is one material.

### Claim 12 (depends on 11)

The apparatus of claim 11, wherein the material comprises a plastic, metal or rubber.

### Claim 13 (depends on 11)

The apparatus of claim 11, wherein the material comprises a plastic.

### Claim 14 (depends on 13)

The apparatus of claim 13, wherein the plastic comprises HDPE, polypropylene or polyolefin.

### Claim 15 (depends on 1)

The apparatus of claim 1, wherein the second long side is a different material than other parts of the apparatus.

### Claim 16 (depends on 15)

The apparatus of claim 15, wherein the second long side comprises a resilient material.

### Claim 17 (depends on 16)

The apparatus of claim 16, wherein the resilient material is rubber.

### Claim 18 (depends on 1)

The apparatus of claim 1, attached to a printer.

### Claim 19 (depends on 18)

The apparatus of claim 18, wherein the printer is an offset printer, a flexographic printer or a gravure printer.

### Claim 20 (depends on 1)

A method of cleaning a roller on a rotary printing press, the method comprising rotating the roller adjacent to the apparatus of claim 1.