Loose-leaf sheet and systematic notebook

A loose-leaf sheet (1) according to the present invention comprises a base sheet (3) having a binding margin (7) adjacent one edge thereof, and release sheet members (4) affixed onto at least one of opposite faces of the base sheet (3), each of the release sheet members (4) being releasable at least once. A multiplicity of such loose-leaf sheets (1) are bound together to form a systematic notebook such as a memorandum book.

TECHNICAL FIELD 
The present invention relates to a loose-leaf sheet comprising a base sheet 
and release sheet members releasably affixed onto the base sheet, and to a 
systematic notebook such as a memorandum book comprising such loose-leaf 
sheet. 
BACKGROUND ART 
Memorandum books, in general, have pages with special formats allowing 
items to be entered therein sortingly by their contents or in the order of 
their occurrences thereby facilitating orderly entries of different 
information in different pages. A so-called "systematic memorandum book" 
is currently the most developed form of memorandum book. Such systematic 
memorandum book includes special pages having, for example, a schedule 
column, memorandum column, check list column, client column, account 
column, diary column and a like column. 
These memorandum books have unique utility which is different from that of 
electronic notebook devices or like devices because the memorandum books 
enables immediate entry, fast reading-through and offers excellent 
portability, and because actual writing makes the user hard to forget the 
matter thus written down. 
When an item is to be entered in a conventional memorandum book, the user 
requires time to sort the item in his or her mind and select a page having 
a suitable format prior to the entry. Thus, a mere entry involves 
cumbersome operations such as turning pages. 
Further, if the user selects a wrong page, the user has to post an entered 
item to a right page later with a substantial loss of time and labor. 
Additionally, entries of sorted items into different pages make it rather 
difficult to find out only certain items, for example, unfinished items. 
Generally, a finished item is deleted by being entirely marked with a cross 
mark (X) or struck through with two lines. For this reason, it may be 
impossible to confirm again the content of an item thus deleted. Also, if 
unfinished items and finished items are left as mingled, there would arise 
problems such as oversight of any unfinished item. 
With such a conventional memorandum book, the user may have to post items 
once entered when he or she wishes to put interrelated items together, to 
separate finished items from unfinished items so as to rearrange the 
entered items, or to change the order of items entered in one page. In 
such case the posting work imposes very much labor on the user and, as 
well, the pages in which the items thus posted had been originally entered 
may become useless. 
The present invention has been accomplished in view of the foregoing 
circumstances. Accordingly, it is an object of the present invention to 
provide a loose-leaf sheet and a systematic notebook which allow the user 
to put items in a desired order with extreme ease while saving time and 
labor required for posting operations, prevent the user from overlooking 
any unfinished item, and avoid the occurrence of any useless page thereby 
enhancing their usefulness. 
DISCLOSURE OF INVENTION 
The present invention provides the following technical means to attain the 
above object. 
That is, a loose-leaf sheet according to the present invention comprises a 
base sheet having a binding margin adjacent one edge thereof, and release 
sheet members affixed onto at least one of opposite faces of the base 
sheet, each of the release sheet members being releasable at least once. 
A systematic notebook according to the present invention may be used as a 
memorandum book or the like and comprises a plurality of sheets bound at 
one edge portions thereof, at least one of the plurality of sheets being 
the loose-leaf sheet defined above. 
The base sheet has opposite faces which can be used as two different pages. 
The release sheet members can be affixed onto each of the two pages of the 
base sheet or only one of the two pages. 
With this construction, when an item entered in a release sheet member 
becomes finished or unnecessary, such an item can be deleted with ease by 
simply releasing the release sheet member from the base sheet. This is 
highly advantageous because there is no need to perform the conventionally 
required cumbersome operation of deleting finished or unnecessary items by 
marking the items with a cross mark or striking them through with two 
lines one by one, and because the portions of the base sheet left after 
the deletion are kept clean. Additionally, oversight of unfinished items 
and like problems can be avoided. 
Further, as required, direct entry of items in the base sheet which is left 
after the releasing of the release sheet members is possible and, thus, 
the release sheet members and the base sheet which constitute a single 
page can be used individually, or can be of double utility. 
Each release sheet member once released from the base sheet may be used for 
various purposes rather than expected, for example, as a substitute for a 
tag to be affixed to another document, article, feltboard for illustration 
or the like, as a substitute for an adhesive tape to fix a torn sheet or 
to affix a document to a feltboard or the like, and as a substitute for a 
bookmarker by folding back one end portion of the release sheet member. 
One of the requirements of the loose-leaf sheet to be used as a component 
of a memorandum book or a like carryable book is that the release sheet 
members enable writing thereon with ordinary writing utensils such as a 
propelling pencil, a pencil, a ball-point pen and a fountain pen. 
If each release sheet member is sized to accommodate to a single line of 
characters or to form a single block so as to allow entry of a single item 
therein, the loose-leaf sheet becomes very easy to handle. Further, since 
the release sheet members are less likely to have a substantial space left 
blank, it is possible to minimize the occurrence of wasteful release sheet 
members and the occurrence of useless spaces occupied by such wasteful 
sheet members on the base sheet. 
If the material for affixing the release sheet members to the base sheet 
comprise any tacky material (inclusive of adhesive) which permits repeated 
affixing and releasing of the release sheet members, each release sheet 
member once released can be affixed to a desired portion. 
Thus, it is possible, for example, to collect release sheet members bearing 
interrelated items from different pages or a given page to another page, 
or to transfer release sheet members bearing finished or unnecessary items 
to another page provided for storage only and put the remaining release 
sheet members (bearing unfinished items) closely in a single page, or to 
change the arrangement of release sheet members in a single page. In 
addition, such operations can be achieved very easily and rapidly. 
The loose-leaf sheet which can be used as above provides an advantage of 
eliminating all the cumbersome posting operations as well as an advantage 
of allowing this user to find necessary information out of orderly 
arranged items rapidly and accurately. 
Further, the loose-leaf sheet enables entry of items in a descending order 
from an upper sheet member to a lower one without giving any attention to 
unwanted things. More specifically, the loose-leaf sheet provides an 
advantage that cumbersome operations of sorting each item to be entered 
and selecting a suitable page can be eliminated. 
If the release sheet members are formed of a light-transmitting material 
such as a transparent material or a translucent material, it is possible 
to see through the release sheet members anything displayed on a 
counterpart member, for example, the base sheet to which the release sheet 
members are affixed. 
Thus, a composite format can be formed by superposing the release sheet 
members on the counterpart member, for example, a square cell pattern by 
combining vertical ruled lines provided on the base sheet and horizontal 
ruled lines provided on the release sheet members. Alternatively, the 
release sheet members can be used as a cover for protecting anything 
written on a counterpart member. 
In these cases the base sheet may be provided with ruled lines, partition 
lines, classification borders, or the like. Likewise, the release sheet 
members may be provided with such lines or borders or the like. 
Where the release sheet members are formed of a colored transparent 
material, each release sheet may be used as an alternative to means for 
highlighting a specified item such as a fluorescent ink pen. 
If the opposite faces of the base sheet have respective formats which are 
vertically symmetric with each other, the loose-leaf sheet can be used as 
follows. 
Where the loose-leaf sheet is held at its binding margin by a binding ring 
device so as to be turnable over to the right and left, the binding ring 
device becomes an obstacle to a hand holding a writing utensil in writing 
on the page situated on the opposite side of the more skillful hand of the 
user (the page on the left side with respect to a right-handed user), thus 
making the writing difficult. 
To allow the user to write always on pages on the same side as a user's 
more skillful hand (for example, pages on the right side with respect to a 
right-handed user), it is only required that the loose-leaf sheet having 
the aforementioned vertically symmetric formats on its front and reverse 
pages be upset and inverted when the front page is fully written. The page 
thus becoming the front page which would otherwise be positioned on the 
opposite side of the user's more skillful hand remains on the same sides 
as the more skillful hand. Accordingly, the user can always perform 
writing on pages positioned on the same side as his or her hand holding a 
writing utensil without being hindered by the ring device. 
If each release sheet member has a width accommodating to that of a line of 
characters of a typical size and a length smaller than an effective length 
of the shorter side of the base sheet and equal to or smaller than a half 
of the effective length of the longer side of the base sheet, such release 
sheet members can be used in the following two optional manners. 
The first one is to affix the release sheet members onto the base sheet 
with their longitudinal axes aligned along the shorter side of the base 
sheet, while the second one is to affix the release sheet members on the 
base sheet with their longitudinal axes aligned along the longer side of 
the base sheet and with each pair of release sheet members being 
longitudinally connected to each other. 
Thus, it is possible to write and read with the shorter sides of the base 
sheet assuming the top and bottom sides, or alternatively with the longer 
sides of the base sheet assuming the top and bottom sides by rotating the 
base sheet 90.degree. and re-affixing the release sheet members with their 
orientation rotated 90.degree.. 
If the systematic notebook including at least one such loose-leaf sheet 
according to the present invention is formed into a memorandum book, it 
offers improved portability and allows for easy orderly arrangement on a 
bookshelf or the like.

BEST MODE FOR CARRYING OUT THE INVENTION 
Hereinafter, the present invention will be described by way of embodiments 
thereof shown in the drawings. 
FIGS. 1 to 4 illustrate the first embodiment of loose-leaf sheet 1 
according to the present invention, and FIG. 5 illustrates systematic 
notebook 2 including the loose-leaf sheet 1. 
As shown in exploded view in FIG. 2, the loose-leaf sheet 1 comprises a 
base sheet 3 and a plurality of release sheet members 4 affixed to the 
base sheet 3. As shown in FIG. 4, these release sheet members 4 are 
affixed to both the front and reverse sides of the base sheet 3 to form 
two different pages on the front and reverse sides. 
The base sheet 3 comprises plain paper as material and having a binding 
margin 7 adjacent one edge thereof in which a plurality of binding 
perforations 6 are formed at predetermined intervals. On both the front 
and reverse sides of the base sheet 7 are provided horizontal ruled lines 
at predetermined intervals by, for example, printing. 
It is possible to vary the number of binding perforations 6, the position 
of the edge adjacent which the binding margin 7 is provided, the width of 
the bindings margin 7 and the like depending upon the type, form or the 
like of the systematic notebook 2. Therefore, the binding margin 7 is not 
necessarily wider than other marginal spaces provided adjacent other 
edges. As the case may be, the binding perforations 6 are not provided. 
The release sheet members 4 are formed of a light-transmitting material, 
such as a translucent sheet material including tracing paper or a 
transparent resin sheet material, which allows writing thereon with 
ordinary writing utensils such as a propelling pencil, a pencil, a 
ball-point pen and a fountain pen. Preferably, the release sheet members 4 
allow writing or coloring with a marking ink pen, signing pen and 
fluorescent ink pen but prevent penetration of any ink therethrough. 
Each release sheet member 4 is in the form of a narrow strip having a 
length equal to that of a horizontal ruled line provided on the base sheet 
3 and a width equal to the spacing between adjacent horizontal ruled 
lines. That is, each release sheet member 4 is sized to accommodate to a 
single line space between adjacent ruled lines provided on the base sheet 
3. Thus, multiple release sheet members 4 are affixed adjacent to each 
other without any clearance therebetween on the front and reverse sides of 
the base sheet 3, the number of the release sheet members 4 being equal to 
the number of lines provided on the front and reverse sides of the base 
sheet 4. 
In the manufacture of the loose-leaf sheet 1, it is convenient to take the 
steps of affixing to this base sheet 3 a large release sheet member 
forming material sized to cover a predetermined area (whole writing area) 
on one side of the base sheet 3 and providing cuts in the release sheet 
member forming material to a depth corresponding to the thickness thereof 
(without cutting the base sheet 3) to form individual release sheet 
members 4. 
A tacky material 8 is applied to the entire reverse side of each release 
sheet member 4 to affix each release sheet member 4 to the base sheet 3 
(refer to FIG. 4). This tacky material 8 has properties such as to allow 
repeated affixing and releasing. Further, the tacky material 8 is 
transparent or translucent so as not to interfere with the light 
transmitting property of the release sheet member 4. 
Multifile 2 as shown in FIG. 5 includes a multiplicity of sheets at least 
one of which is loose-leaf sheet 1, and a binding ring device 10 binding 
the sheets together. All the sheets may each comprise such loose-leaf 
sheet 1. 
The binding ring device 10 has rings which accommodate the binding margin 7 
of the base sheet 3 in number, shape, spacing between adjacent rings, 
open/close structure thereof or the like. Such arrangement of the rings 
may be appropriately varied as long as they are well combined with the 
base sheet 3. In FIG. 5, numeral 11 designates a cover case. 
The following are examples of use of the loose-leaf sheet 1 and systematic 
notebook 2. 
USE EXAMPLE 1 
Various necessary items should be entered in release sheet members 4 along 
ruled lines provided on base sheet 3 which are seen through the release 
sheet members 4. 
In the following description, for convenience, page 1A shown in FIG. 1 will 
be referred to as "releasing page" provided for entry of items and page 1B 
or 1C is referred to as "receiving page" for orderly arrangement of the 
entered items. 
In entering items in the releasing page 1A there is no need to pay 
attention to anything except to start a new line when the next item is to 
be entered. 
As a matter of course, where one item cannot be accommodated in a single 
line, the next line should be used. Such a situation is best shown by 
release sheet members 4-1 and 4-2 in FIG. 1. In this case, it is 
convenient to provide characters, numerals or the like (not shown) 
indicating continuation or sequence in appropriate portions of adjacent 
release sheet members 4. 
In this way items are entered one after another from the top toward the 
bottom of the releasing page 1A in a time sequence without necessitating 
any cumbersome operation such as sorting each item in advance and 
selecting a suitable page therefor. 
In turn, of the release sheet members 4 on the releasing page 1A those 
bearing items related to, for example, February are selected and released 
from the base sheet 3 and then affixed to receiving page 1B intended to be 
exclusively used for the schedule of February in the order of their 
occurrences from the top toward the bottom of the page 1B. In this case a 
set of release sheet members 4-1,4-2 having continuity over a plurality of 
lines should be handled together. 
Since a single release sheet member 4 is sized to accommodate to a single 
line of characters or letters of a typical size, a significant advantage 
is provided such that it is possible to handle a single item as a unit. 
Further, since each release sheet member 4 is unlikely to leave a 
substantial blank space therein, it is possible to minimize wasteful use 
of release sheet members 4 and of the space in the base sheet 3 occupied 
by release sheet members 4. 
The receiving page 1B may comprise a base sheet 3 which is initially free 
of any release sheet member 4 or is affixed with release sheet members 4 
to be replaced with written release sheet members 4 of the releasing page 
1A. Alternatively, it is possible to utilize as receiving page 1B a 
separate sheet of a size as large as a large-size notebook or a separate 
file. 
Likewise, release sheet members 4 bearing items related to March are 
transferred from the releasing page 1A to receiving page 1C to be used 
exclusively for the schedule of March. By repeating such operations the 
schedule of each month can readily be made out. 
The use of systematic notebook 2 in this way enables orderly arrangement of 
information as desired rapidly and simply without necessitating any 
posting operation (i.e., any actual copying operation with a writing 
utensil), which would otherwise be impossible with conventional memorandum 
books or the like. 
Release sheet members 4 left spaced from each other on the releasing page 
1A by releasing some release sheet members 4 therefrom as above may be put 
close together upwardly with possible rearrangement thereof. 
A relatively large blank portion in the lower portion of the base sheet 3 
resulting from such operations may be effectively used by, for example, 
entering a memorandum directly therein when necessity arises. 
When all the release sheet members 4 are released from the releasing page 
1A, the base sheet 3 thus left may be reused as a new receiving page or as 
a sheet allowing direct 16 entry therein. Thus, release sheet members 4 
and the base sheet 3 on the same page have individual utility values, 
i.e., the loose-leaf sheet 1 is of double utility value. 
USE EXAMPLE 2 
When some items borne by release sheet members 4 on receiving page 1B in 
which the schedule of, for example, February is made out in the manner as 
described in Use Example 1, becomes finished or unnecessary, these release 
sheet member 4 are released from the base sheet 3 and then affixed to 
another page to be used for storage only (not shown). Release sheet 
members 4 (with unfinished items) thus left spaced on the receiving page 
1B are put close together upwardly on the base sheet 3. 
In this way finished or unnecessary items are readily deleted from the 
receiving page 1B without requiring any cumbersome erasing operation such 
as marking each item with a cross mark or striking each item through with 
two lines. Further, since no such erasing operation is required, both the 
release sheet members 4 and the base sheet 3 are kept clean even after the 
deletion of finished or unnecessary items. This results in advantages of 
finding out a target item rapidly and preventing oversight or the like. 
With lapse of days, the number of release sheet members 4 left on the 
receiving page 1B decreases and, hence, they necessarily become 
conspicuous. For this reason the items in such release sheet members 4, or 
unfinished items can be noticed at a glance with no possibility of 
oversight. 
On the other hand, release sheet members 4 with finished or unnecessary 
items on the storage page (not shown) are necessarily arranged from the 
top in the order of their settlement. Each of such items can be clearly 
read because they are not erased with a cross mark or two lines. Thus, 
there is provided an advantage that later confirmation or search can be 
made with extreme ease. 
USE EXAMPLE 3 
When items borne by release sheet members 4 affixed to the receiving page 
1B or 1C in which the schedule is completed in the manner as described in 
Use Example 1, become finished or unnecessary, such release sheet members 
4 are released from the base sheet 3 and discarded sequentially. Each time 
such discard is made the remaining release sheet members 4 with a space 
therebetween are put close together upwardly. 
Eventually, only the base sheet 3 is left on the receiving page 1B or 1C. 
Thus, it is possible to reuse the base sheet 3 as a new receiving page or 
as a sheet allowing direct entry therein. 
USE EXAMPLE 4 
Release sheet member 4 released from base sheet 3 is used as a substitute 
for a tag by being attached to another document, article, feltboard or the 
like. If a comment or the like is provided in release sheet member 4, such 
release sheet member 4 can be used as a message sheet. 
USE EXAMPLE 5 
Release sheet member 4 released from base sheet 3 is used as a substitute 
for an adhesive tape in, for example, repairing a torn sheet or attaching 
a document to a feltboard. 
Thus, cumbersomeness such as to carry about adhesive tape for each meeting 
will be eliminated. 
USE EXAMPLE 6 
As shown in FIGS. 6(a) and 6(b), release sheet member 4 released from base 
sheet 3 is folded back at one longitudinal end thereof and the folded 
portion is bonded to the corresponding portion of the release sheet 
member. The release sheet member 4 thus folded is used as a substitute for 
a bookmarker or the like. The length of the folded portion is determined 
as desired. 
In this way the tacky material 8 is not exposed in the folded portion and 
hence will not stick to a hand or the like. Further, since the folded 
portion is thicker than the rest, and thus, is easy to bend, the folded 
portion can be suitably handled as a pick-up tongue. 
USE EXAMPLE 7 
Release sheet 4 released from base sheet 3 is used as a substitute for a 
protective cover by being superposingly affixed onto a portion of another 
document in which a memorandum or the like is written down. Such use of 
the release sheet member 4 is convenient, for example, where the user does 
not wish erroneous erasing, staining or damaging of the memorandum, or 
where the memorandum is written with an aqueous ink and the user wishes to 
prevent the aqueous ink from feathering or staining another article. 
USE EXAMPLE 8 
Release sheet member 4 released from base sheet 3 is used as a substitute 
for a blind by being superposingly affixed onto a portion of base sheet 3 
or another document in which a memorandum is written down or a specified 
portion of printing and painted out with an opaque coloring ink (for 
example, black marking ink). Such use of release sheet member 4 makes it 
possible to keep information secret during a specified period of time or 
from a specified person. When the secrecy becomes unnecessary, the release 
sheet member 4 may be removed. 
USE EXAMPLE 9 
A desired title is entered in release sheet member 4 affixed to base sheet 
3 and then the resulting release sheet member 4 is transferred onto a 
cassette tape, cassette video tape, floppy disk or their case, or the back 
side of any file. In this way the release sheet member 4 is used as a 
substitute for a label. 
FIG. 7 shows a second embodiment of loose-leaf sheet 1 according to the 
present invention. In this embodiment are provided plural types of base 
sheets 3 (three types 3A,3B,3C are shown) and a single type of release 
sheet members 4 for use with the plural types of base sheets 3 in common. 
The release sheet members 4 are used in combination with the different 
types of base sheets 3 to provide pages with different formats (1D,1E,1F). 
The release sheet members 4 used in the second embodiment are connected 
contiguously to each other to form a single sheet sized to cover a 
predetermined area (whole writing space) on one side of a base sheet 3. 
Cuts (not shown) are provided to define individual writing lines, so that 
individual release sheet members 4 can be separated one by one when 
required. 
Each release sheet member 4 is provided with a ruled line 15 along and 
adjacent one longer edge thereof by printing or the like. Thus, when the 
plural release sheet members 4 are regarded as an integral sheet, each 
ruled line 15 represents each writing line. When each release sheet member 
4 is regarded as a separate individual sheet, the ruled line 15 thereof 
corresponds to an underline. 
The base sheets 3 include one (3A) provided with a plurality of regularly 
spaced vertical ruled lines 16, a blank one (3B), one (3C) with specific 
classification borders 17, and the like (not shown). 
When the integral sheet of release sheet members 4 is superposingly affixed 
onto base sheet 3 (3A) having vertical ruled lines 16, the horizontal 
ruled lines cf the integral sheet and the vertical ruled lines of the base 
sheet 3 are combined with each other as crossing at right angles to 
provide page 1D having a square cell pattern format. 
Likewise, when the integral sheet of release sheet members 4 is 
superposingly affixed onto blank base sheet 3 (3B), there is provided page 
1E of a format having the horizontal ruled lines 15 only. 
Similarly, the integral sheet of release sheet members 4 is superposingly 
affixed onto base sheet 3 (3C) having the classification borders 17, there 
is provided page 1F of a format having a table pattern adapted for a 
predetermined purpose. 
USE EXAMPLE 1 
Integral sheets of release sheet members 4 of a single type are combined 
with plural types (3A to 3C) of base sheets 3, respectively, to provide 
pages 1D to 1F having all the aforementioned format patterns. Also, the 
same types (3A to 3C) of base sheets 3 free of release sheet members 4 are 
provided for use as receiving pages. 
In turn, the pages 1D to 1F are used with their patterns suited to 
respective purposes (i.e., entering items following the format of each 
page). In orderly arranging entered information by transferring release 
sheet members 4, base sheet 3 to be used as a receiving page should be of 
the same type as the base sheet 3 having a corresponding releasing page. 
Such orderly arrangement of in formation is universally practiced. 
USE EXAMPLE 2 
Information is entered in, for example, page 1D having the square cell 
pattern format, with one character in one square cell. When orderly 
arrangement of the information (transfer of release sheet members 4) is to 
be performed after the entry, blank base sheet 3B is used as a receiving 
page. In this way the information transferred to the receiving page by 
affixing a plurality of release sheet members 4 onto the blank base sheet 
3B becomes well streamlined with no vertical line 16 between adjacent 
characters. Further, since the characters are orderly arranged in the 
vertical direction, the information on each release sheet member 4 can be 
read very smoothly and exactly. In addition, release sheet members 4 thus 
transferred to the receiving page are also neatly arranged in order in 
terms of their appearance. 
As a matter of course, the base sheet 3A left as the releasing page comes 
to have vertical lines 16 only and, hence, can be used as a sheet for 
vertical writing. Alternatively, it is possible to use the base sheet 3A 
as a sheet for horizontal writing by rotating it 90.degree.. 
USE EXAMPLE 3 
Characters are written on page 1F having the table pattern format with 
vertical partition lines thereof (portions of the classification border) 
neglected. To perform orderly arrangement of the information thus entered 
(transfer of release sheet members 4), blank base sheet 3B is used. 
Such a way of use is not proper, and it would be proper to use page 1E 
having the format of horizontal ruled line pattern only instead of the 
page 1F having the table pattern format. 
However, in case where there is no time to select the proper page or there 
is no longer page 1E having the format of horizontal ruled line pattern 
only which is blank or partially blank, the use in the above manner has a 
merit as a stopgap. 
USE EXAMPLE 4 
Since each release sheet member 4 has a ruled line 15 extending along the 
length thereof, it is possible to form an appropriate column, 
classification border, graph or the like by combining, for example, blank 
base sheet 3B (i.e., with no release sheet member affixed thereto) with a 
plurality of (for example, four) blank release sheet members 4. In this 
case each release sheet member 4 may be cut to an appropriate length as 
required. 
Alternatively, release sheet members 4 may be affixed diagonally to provide 
diagonal ruled lines. 
USE EXAMPLE 5 
Release sheet member 4 released from base sheet 3 is superposingly affixed 
onto a specified item of a description of another document. In this case 
the ruled line 15 of the release sheet member 4 becomes an underline of 
the specified item. Such use of release sheet member 4 enables 
highlighting of a specified item without causing any problem even when the 
release sheet member 4 is affixed to a document or the like which in 
general restricts or prohibits any interpolation such as a contract 
document, a power of attorney document, or goods. Hence, the loose-leaf 
sheet of this embodiment is of a very high utility value. 
FIGS. 8 and 9 illustrate a third embodiment of loose-leaf sheet 1. Each 
release sheet member 4 used in the third embodiment is sized to 
accommodate to a single writing line of characters of typical size. The 
length L of the release sheet member 4 in the longitudinal direction 
smaller than effective length W of the shorter side of base sheet 3 (the 
entire length of the shorter side minus the width of binding margin 7) 
while being equal to or smaller than a half of effective length H of the 
longer side of the base sheet 3 (the entire length of the longer side 
minus the width of binding margin 7 if the binding margin 7 is provided 
along the shorter side). That is, W.gtoreq.L.ltoreq.H/2. 
This embodiment employs blank base sheet 3. Whether or not to provide a 
ruled line in each release sheet member 4 is a matter of option. 
USE EXAMPLE 
As shown in FIG. 8, the releasing page is used sideways by being rotated 
90.degree. and, hence, the writing line direction of each release sheet 
member 4 is in the vertical direction. Then, entry of information in each 
release sheet member 4 is performed vertically, i.e., in the line 
direction thereof. 
As shown in FIG. 9, the receiving page is used wholly lengthways. In 
transferring given release sheet members 4 from the releasing page to the 
receiving page such release sheet members 4 are affixed onto the receiving 
page so that the writing line direction of each release sheet member 4 is 
aligned along the longer side of the receiving page. In this case each 
pair of release sheet members 4 are vertically connected together to form 
each single line in such a manner that the first release sheet member is 
positioned on the upper side of the first line, the second release sheet 
member positioned on the lower side of the first line, the third release 
sheet member positioned on the upper side of the second line, and so 
forth. 
In this way the receiving page allows entry of items into the release sheet 
members 4 and reading of entered items with the shorter sides of the base 
sheet 3 assuming the top and bottom of the page. This eliminates the 
cumbersome operation of rotating every page 90.degree. in turning pages or 
reading the entered items over again later. 
Of course, the page shown in FIG. 8 allows entry of items into and reading 
of the items from the release sheet members 4 affixed thereto with the 
longer sides of the base sheet 3 assuming the top and bottom of the page. 
FIG. 10 illustrates a fourth embodiment of loose-leaf sheet 1 according to 
the present invention in which release sheet members 4 are not shown. In 
this embodiment horizontal ruled lines 20 and heading underlines 21 are 
provided at predetermined intervals on the front and reverse sides of base 
sheet 3, but the formats of these lines 20 and 21 provided on the front 
and reverse sides, respectively, of the base sheet 3 are vertically 
symmetrical with each other. 
With this arrangement, when the base sheet 3 is upset in a manner such as 
to invert the top and the bottom thereof, the format of the ruled lines 20 
and underlines 21 appearing on the side having just assumed the front side 
is the same as on the previous front side. 
USE EXAMPLE 
Loose-leaf sheets 1 are set on binding ring device 10 of systematic 
notebook 2 by inserting the rings of the binding ring device 10 into 
binding perforations 6 provided in binding margin 7 of the base sheet 3 of 
each loose-leaf sheet 1 as shown in FIG. 5. Thus, the loose-leaf sheet 1 
are turnable to the right and left sides of the ring device 10. 
Now assuming that the systematic notebook 2 is opened so that loose-leaf 
sheets 1 are positioned on opposite sides of the ring device 10 and that 
the user is going to write some characters on the opened page of the 
loose-leaf sheet 1 positioned on the opposite side of a user's more 
skillful hand (left page if the user is right-handed). 
In this case the ring device 10 becomes an obstacle to a hand holding a 
writing utensil and, hence, it is difficult for the user to write on that 
page. However, the ring device 10 does not interfere with the user at all 
when the user writes characters on the opened page of the loose-leaf sheet 
1 positioned on the same side as the user's more skillful hand (right page 
if the user is right-handed). 
To enable the user to write always on pages positioned on the same side as 
the user's more skillful hand, the page on the front side of a loose-leaf 
sheet 1 positioned on the same side as the user's more skillful hand is 
subjected to writing and, when the page is fully written, the base sheet 3 
of the loose-leaf sheet 1 is invertedly upset. In this way the loose-leaf 
sheet 1 thus upset remains on the same as the user's more skillful hand 
with its page having just assumed the front side being ready to be 
written. 
When the pages on opposite sides of loose-leaf sheet 1 are fully written, 
this loose-leaf sheet 1 is turned over to the side opposite the user's 
more skillful hand (for example, to the left). Such an operation is 
repeated. 
FIG. 11 shows in exploded view a fifth embodiment of loose-leaf sheet 1 
according to the present invention. In this embodiment base sheet 3 as 
well as release sheet members 4 is formed of a light-transmitting material 
such as transparent, translucent or colored transparent material. 
Thus, the loose-leaf sheet 1 comprising the base sheet 3 affixed with the 
release sheet members 4 allows the user to see the other side of the base 
sheet 1 therethrough. This loose-leaf sheet 1 has the release sheet 
members 4 on only one side of the base sheet 3. 
USE EXAMPLE 1 
In writing characters on such loose-leaf sheet 1 there are used an underlay 
board 25 having a horizontal ruled line pattern, an underlay board 26 
having a square cell pattern and an underlay board 27 having a table 
pattern adapted for a given purpose. 
In this case it is possible to use in combination plural kinds of underlay 
boards 25 to 27 for a single loose-leaf sheet 1. For example, the underlay 
board 25 with the horizontal ruled line pattern is used under release 
sheet members 4 in an upper portion of the base sheet 3, the underlay 
board 26 with the square cell pattern is used under release sheet members 
4 in an intermediate portion of the base sheet 3, and the underlay board 
27 with the table pattern is used under release sheet members 4 in a lower 
portion of the base sheet 3. 
In orderly arranging the information entered in these release sheet members 
4 (i.e., in transferring the release sheet members 4) it is merely 
required that the release sheet members 4 be transferred to corresponding 
receiving pages. 
With this embodiment there is no need to carry about plural sets of 
loose-leaf sheets 1 of different format patterns but a single set of 
underlay boards 25 to 27 which is accommodated to any pattern. Thus, this 
embodiment is excellent in portability. 
Further, since there is no need to prepare release sheet members 4 and base 
sheets 3 of different patterns, the subject embodiment is also 
advantageous in terms of lower manufacturing costs. 
USE EXAMPLE 2 
Loose-leaf sheet 1 is superposed on a map, drawing, photograph, 
illustration or the like, and a necessary portion thereof is traced on 
release sheet members 4. All the release sheet members 4 containing the 
tracing region can be transferred to, for example, another sheet with 
their positional sequence on the base sheet 3 maintained. 
Alternatively, it is possible to affix release sheet members 4 from the 
base sheet 3 directly to a map or the like, followed by tracing. In this 
case the release sheet members 4 affixed onto the map or the like will not 
shift thereby ensuring easy and exact tracing. 
FIG. 13 illustrates a sixth embodiment of loose-leaf sheet 1 according to 
the present invention, in which a single release sheet member 4 is large 
enough to cover a given area on one side of base sheet 3 (whole writing 
area) and the base sheet 3 is provided with horizontal ruled lines at 
predetermined intervals by printing or the like. 
USE EXAMPLE 
In orderly arranging information entered in the release sheet member 4 in a 
descending order, portions or areas (refer to the portions designated by 
4X and 4Y) containing required pieces of information of the release sheet 
member 4 are cut off with a single sheet cutter which is capable of 
cutting a single sheet of stacked sheets and is commercially available. 
FIG. 14 illustrates a seventh embodiment of loose-leaf sheet 1 according to 
the present invention, in which release sheet members 4 are each shaped 
into a block piece and base sheet 3 is provided with partition lines 30 
defining sections each corresponding to each release sheet member 4 by 
printing or the like. 
Various variations and modifications as well as the foregoing embodiments 
are possible in the present invention. 
For example, each release sheet member 4 is formed of a colored transparent 
material and is used, for example, as a substitute for a marker. This is 
similar to highlighting of a specified item with a fluorescent ink pen. 
Thus, release sheet members 4 for use in this case are preferably in a 
fluorescent color. Further, to prevent such release sheet members 4 from 
being developed (in black) by a copying machine it is preferable to employ 
light colors. 
It is in general impossible to correct or undo an erroneous marking with a 
marking ink pen such as a fluorescent ink pen. With a colored transparent 
release sheet member 4, in contrast, it is advantageously possible to 
change the affixed position of the release sheet member 4 or undo affixing 
several times, or to change the marking color (i.e., by replacing affixed 
release sheet member 4 with a differently colored one). 
Further, it is possible for such release sheet member 4 to highlight a 
specified item without causing any problem even when the release sheet 
member 4 is affixed to a document or the like which in general restricts 
or prohibits any interpolation such as a contract document, a power of 
attorney document, or goods. 
Release sheet members 4 and base sheet 4 in various forms as used in the 
first to seventh embodiments may be used in appropriate combination, and 
the foregoing Use Examples may also be appropriately combined. 
Loose-leaf sheet 1 is not particularly limited in size and may be as large 
as a large-sized notebook or a typical memorandum book. Alternatively, 
loose-leaf sheet 1 may be further reduced in size for women or children. 
Each release sheet member 4 may have a width accommodating to that of a 
plurality of lines (a few lines) of typical size characters. Further, each 
release sheet member 4 may have a length equal to, for example, a half of 
the width of base sheet 3, and each pair of such release sheet members 4 
may be horizontally connected to each other so as to correspond to a 
single horizontal writing line. 
Each release sheet member 4 may have a length such that one end thereof 
protrudes from a corresponding edge of base sheet 3 as shown in FIG. 
15(a), or alternatively base sheet 3 has an indented edge such that one 
end of each release sheet member 4 protrudes therefrom as shown in FIG. 
15(b). In either case the protruding end portion of each release sheet 
member 4 is not applied with tacky material 8 so as to allow the user to 
release the release sheet member 4 easily by taking the protruding end 
portion thereof by hand. 
Tacky material 8 may be such that a single-time releasing causes the tacky 
material to become incapable of being used again; that is, release sheet 
member 4 with such tacky material 8 will be disposed of once released from 
base sheet 3. Tacky material 8 may be a releasable adhesive. Further, 
tacky material 8 is not required to be applied onto entire one side face 
of each release sheet member 4 but may be applied partially. Each release 
sheet member 4 may have one end free of tacky material 8 which functions 
as a pick-up tongue for releasing. 
Each release sheet member 4 may be colored and opaque, or provided with 
shadowing or any attached printing such as of an illustration or user's 
name and position (equivalent to user's business card). As such, the 
present invention has a very extensive applicability. 
Base sheet 3 is not limited to a plain paper sheet allowing entry of 
information with a pencil, ball-point pen or a like writing utensil but 
may comprise a paper sheet laminated with a film, a plastic sheet or a 
like sheet. 
INDUSTRIAL APPLICABILITY 
The loose-leaf sheet according to the present invention is applicable to 
systematic memorandum books, notebooks and the like.