Browse Prior Art Database

THREE PAD HEAD

IP.com Disclosure Number: IPCOM000025350D
Original Publication Date: 1984-Dec-31
Included in the Prior Art Database: 2004-Apr-04
Document File: 4 page(s) / 128K

Publishing Venue

Xerox Disclosure Journal

Abstract

Referring to Figure 1, labeling machines typically use a vacuum wheel 5 to pick up the label 6 and then apply the same to a document 7 moving at the same surface speed. If the surface speed is different, the slipping or gathering of the label could occur which would be detrimental to the performance of the address label. Thus, the circumference of the vacuum wheel 5 controls the spacing between labels as the labels are applied to a continuous stream of documents 7. The documents also have to be fed at this precise spacing. Therefore, a vacuum wheel 5 with one vacuum pad 10 and a circumference of 20" will apply labels at the same location on the document if the documents are moving at surface speed of the vacuum wheel and also spacing between the documents is 20" tip to tip (see Figure 1). However, modern printing, binding and finishing equipment often require labeling of docu-ments coming at other than 20" spacing.

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Page 1 of 4

XEROX DISCLOSURE JOURNAL

THREE PAD HEAD 156/521 C1. U.S. Proposed Chandrakant R. Bhatia Classification

Int. C1. B32b 31/00

9

F/G 2

FIG 3

5

Volume 9 Number 6 November/December 1984 357

[This page contains 1 picture or other non-text object]

Page 2 of 4

THREE PAD HEAD (Cont'd)

Referring to Figure 1, labeling machines typically use a vacuum wheel 5 to pick up the label 6 and then apply the same to a document 7 moving at the same surface speed. If the surface speed is different, the slipping or gathering of the label could occur which would be detrimental to the performance of the address label. Thus, the circumference of the vacuum wheel 5 controls the spacing between labels as the labels are applied to a continuous stream of documents 7. The documents also have to be fed at this precise spacing. Therefore, a vacuum wheel 5 with one vacuum pad 10 and a circumference of 20" will apply labels at the same location on the document if the documents are moving at surface speed of the vacuum wheel and also spacing between the documents is 20" tip to tip (see Figure 1). However, modern printing, binding and finishing equipment often require labeling of docu- ments coming at other than 20" spacing.

In order to change the spacing between documents tip to tip, the circumference of the vacuum wheel 5 has to change. In most machines, this is almost impossible because the center distances of the various parts have to change, which requires extensive redesign of the machine casting and drive train.

Labeling heads are mounted on a mailing base 9 which also feeds the documents. The surface speed of the document 7 as well as feeder speed control the throughput of the machine. Typically, the base 9 runs at 10" or 20" document spacing, which is achieved by installing two pads 10, 11 on the vacuum wheel 5 as shown in Figure 2. When the machine is run on 10" spacing, both pads, 10, 11, are used while only one pad 10 is used when running at 20" spacing. To keep the maximum surface speed of the documents the same, base runs are made at 30,00O/hour at 10" spacing, and 15,00O/hour at 20" spacing. The majority of documents are, however, 9.5" or longer and must, therefore, be run at 20" spacing with a maximum speed of 15,00O/hour.

Many printers have media coming at spacings other than 10" or 20". Also, many customers who have documents which are 10" to 12" long are dissatisfie...