Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
240 words
Means for automatically registering a paper web on a printing cylinder of a silk screen serigraphic printing machine comprising, means for feeding a web of sheet material to a printing cylinder for receiving a printed impression thereupon and with the web in contact with said cylinder at all times, indicia means carried by said web for indicating proper registration positioning for receipt of the next successive impression thereupon, first drive means including a first drive motor, for rotating said printing cylinder in one direction and thereby advancing said web to a position where said indicia means is located beyond the proper registration position, second drive means including a second drive motor, for rotating said printing cylinder in the opposite direction, retracting said web therewith, means for operatively disengaging said first drive means from said printing cylinder after each impression applied to said web is completed, means operatively engaging said second drive means with said printing cylinder for reversing said printing cylinder carrying the web therewith when said first drive means is disengaged therefrom, said first drive means remaining thus disengaged during operation of said second drive means, and scanning means for sensing said indicia when said web is retracted, said scanning means coupled to said second drive means for operatively disengaging same from said printing cylinder when said indicia reaches the proper registration position, said scanning means being located in monitoring position relative to said web and said indicia means.
Claim 2
Dependent Claim
240 words
Means for automatically registering a paper web on a printing cylinder of a silk screen serigraphic printing machine comprising, means for feeding a web of sheet material to a printing cylinder for receiving a printed impression thereupon and with the web in contact with said cylinder at all times, indicia means carried by said web for indicating proper registration positioning for receipt of the next successive impression thereupon, first drive means including a first drive motor, for rotating said printing cylinder in one direction and thereby advancing said web to a position where said indicia means is located beyond the proper registration position, second drive means including a second drive motor, for rotating said printing cylinder in the opposite direction, retracting said web therewith, means for operatively disengaging said first drive means from said printing cylinder after each impression applied to said web is completed, means operatively engaging said second drive means with said printing cylinder for reversing said printing cylinder carrying the web therewith when said first drive means is disengaged therefrom, said first drive means remaining thus disengaged during operation of said second drive means, and scanning means for sensing said indicia when said web is retracted, said scanning means coupled to said second drive means for operatively disengaging same from said printing cylinder when said indicia reaches the proper registration position, said scanning means being located in monitoring position relative to said web and said indicia means.
Claim 3
Dependent Claim
20 words
The structure as claimed in claim 1 in which said indicia comprise notches formed at spaced locations on the web.
Claim 4
Dependent Claim
101 words
The structure as claimed in claim 1 in which there is a reciprocable printing frame carrying a silk screen and said first drive means is coupled to drive said printing frame in a first direction to advance said screen in image applying relation to said web simultaneously with operation of said printing cylinder advancing said web for application of an impression to said web by application of selected color ink through said silk screen, said first drive means being operable also to return said printing frame to its initial position when the printing cylinder is disengaged from said first drive means.
Claim 5
Dependent Claim
24 words
The structure as claimed in claim 3 in which said scanning means comprises a photocell positioned downstream of said cylinder in sensing relation thereto.
Claim 6
Dependent Claim
40 words
The structure as claimed in claim 3 in which said second drive means includes a small electric motor so that the retraction of the web is performed at a speed substantially lower than the speed of advance of the web.